/* ==========================================================================
   project.css — Projects page, project panel sidebar, system cards,
   selection dialog, active target indicator, schedule preview, exports
   ========================================================================== */


/* --------------------------------------------------------------------------
   Active Target Button  (top bar — clickable to open side panel)
   -------------------------------------------------------------------------- */
#btn-active-target {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md) var(--space-xs) var(--space-sm);
    margin-right: 2px;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    background-color: rgba(255, 255, 255, 0.12);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: rgba(255, 255, 255, 0.9);
    white-space: nowrap;
    max-width: 220px;
    transition: background-color var(--transition-fast);
    backdrop-filter: blur(4px);
}

#btn-active-target:hover {
    background-color: rgba(255, 255, 255, 0.25);
}

.active-target-icon { flex-shrink: 0; }

#active-target-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#btn-clear-target {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    margin-right: var(--space-sm);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    background-color: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

#btn-clear-target:hover {
    color: rgba(255, 255, 255, 1);
    background-color: rgba(255, 255, 255, 0.25);
}


/* --------------------------------------------------------------------------
   Floating Sidebar Toggle Button
   -------------------------------------------------------------------------- */
.floating-sidebar-btn {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 180;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg) var(--space-md) var(--space-lg);
    background: linear-gradient(160deg, #002B5C 0%, #004A8F 60%, #1873C4 100%);
    color: var(--color-text-inverse);
    border-radius: var(--border-radius-lg) 0 0 var(--border-radius-lg);
    box-shadow: -3px 2px 12px rgba(0, 30, 70, 0.35);
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base), padding var(--transition-base);
    writing-mode: horizontal-tb;
    white-space: nowrap;
    border: none;
    outline: none;
}

.floating-sidebar-btn:hover {
    transform: translateY(-50%) translateX(-4px);
    box-shadow: -5px 4px 20px rgba(0, 30, 70, 0.45);
}

.floating-sidebar-icon {
    flex-shrink: 0;
}

.floating-sidebar-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.floating-sidebar-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 var(--space-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    background-color: var(--color-accent);
    color: var(--color-text-inverse);
    border-radius: 999px;
}

.floating-sidebar-chevron {
    flex-shrink: 0;
    opacity: 0.7;
}


/* --------------------------------------------------------------------------
   Projects Page
   -------------------------------------------------------------------------- */
#projects-page {
    max-width: 960px;
    margin: 0 auto;
    animation: content-fade-in 0.4s ease-out;
}

#projects-page-header {
    display: flex; align-items: center; justify-content: space-between;
    gap: var(--space-lg); margin-bottom: var(--space-2xl);
}

#projects-page-header-left { display: flex; align-items: center; gap: var(--space-lg); }

#projects-page-title {
    font-size: var(--font-size-2xl); font-weight: var(--font-weight-bold);
    color: var(--color-text); letter-spacing: -0.03em;
}

#btn-back-to-schedule {
    display: flex; align-items: center; gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md); font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold); color: var(--color-brand);
    border-radius: var(--border-radius); transition: color var(--transition-fast), background-color var(--transition-fast);
}
#btn-back-to-schedule:hover { color: var(--color-brand-dark); background-color: var(--color-brand-light); }

#btn-create-project {
    display: flex; align-items: center; gap: var(--space-sm); height: 40px;
    padding: 0 var(--space-xl); font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold); color: var(--color-text-inverse);
    background: linear-gradient(135deg, var(--color-brand) 0%, #1873C4 100%);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 84, 166, 0.3);
}
#btn-create-project:hover {
    background: linear-gradient(135deg, var(--color-brand-dark) 0%, var(--color-brand) 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(0, 84, 166, 0.35);
}


/* --------------------------------------------------------------------------
   Projects Grid & Cards
   -------------------------------------------------------------------------- */
#projects-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.projects-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-left: 3px solid transparent;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base), border-left-color var(--transition-base);
    box-shadow: var(--shadow-md);
}
.projects-card:hover {
    box-shadow: 0 6px 20px rgba(0, 84, 166, 0.12), 0 12px 32px rgba(0, 0, 0, 0.08);
    border-color: var(--color-brand);
    border-left-color: var(--color-brand);
    transform: translateY(-3px);
}
.projects-card-active {
    border-color: var(--color-brand);
    border-left: 3px solid var(--color-brand);
    box-shadow: 0 2px 8px rgba(0, 84, 166, 0.1), 0 0 0 1px rgba(0, 84, 166, 0.08);
}

.projects-card-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: var(--space-lg) var(--space-lg) var(--space-sm); gap: var(--space-sm);
}
.projects-card-name { font-size: var(--font-size-md); font-weight: var(--font-weight-bold); color: var(--color-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.projects-card-actions { display: flex; gap: var(--space-xs); flex-shrink: 0; }
.projects-card-action-btn { display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: var(--border-radius); color: var(--color-text-muted); transition: color var(--transition-fast), background-color var(--transition-fast); }
.projects-card-action-btn:hover { color: var(--color-brand); background-color: var(--color-brand-light); }
.projects-card-delete-btn:hover { color: var(--color-danger); background-color: var(--color-danger-bg); }

.projects-card-body {
    display: flex; align-items: center; justify-content: space-between;
    padding: var(--space-sm) var(--space-lg); gap: var(--space-md);
}
.projects-card-count { font-size: var(--font-size-sm); color: var(--color-text-secondary); }
.projects-card-status { font-size: var(--font-size-xs); font-weight: var(--font-weight-semibold); }
.projects-card-status-active { color: var(--color-success); }

.projects-card-footer { padding: var(--space-sm) var(--space-lg) var(--space-lg); }
.projects-card-open-btn {
    width: 100%; height: 34px;
    font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold);
    color: var(--color-brand); background-color: var(--color-brand-light);
    border: 1px solid var(--color-brand); border-radius: var(--border-radius);
    transition: color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.projects-card-open-btn:hover {
    color: var(--color-text-inverse);
    background-color: var(--color-brand);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 84, 166, 0.3);
}

#projects-empty {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    padding: var(--space-3xl) var(--space-3xl) calc(var(--space-3xl) * 2); text-align: center; gap: var(--space-md);
    background: radial-gradient(ellipse at center, var(--color-brand-lighter) 0%, transparent 70%);
    border-radius: var(--border-radius-lg);
}
#projects-empty-icon { color: var(--color-brand); margin-bottom: var(--space-md); }
#projects-empty-title { font-size: var(--font-size-lg); font-weight: var(--font-weight-bold); color: var(--color-text); }
#projects-empty-subtitle { font-size: var(--font-size-md); color: var(--color-text-muted); }


/* --------------------------------------------------------------------------
   Selection Dialog
   -------------------------------------------------------------------------- */
.selection-dialog { width: 400px; }
.selection-dialog-body { max-height: 350px; overflow-y: auto; }
.selection-dialog-footer { flex-wrap: wrap; }
.selection-options { display: flex; flex-direction: column; gap: var(--space-sm); margin-top: var(--space-md); }
.selection-option { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-md); border: 1px solid var(--color-border); border-radius: var(--border-radius); cursor: pointer; transition: border-color var(--transition-fast), background-color var(--transition-fast); }
.selection-option:hover { border-color: var(--color-brand); background-color: var(--color-brand-lighter); }
.selection-option:has(.selection-radio:checked) { border-color: var(--color-brand); background-color: var(--color-brand-light); }
.selection-radio { accent-color: var(--color-brand); width: 16px; height: 16px; }
.selection-option-label { flex: 1; font-size: var(--font-size-md); font-weight: var(--font-weight-semibold); color: var(--color-text); }
.selection-option-count { font-size: var(--font-size-xs); color: var(--color-text-muted); }
.selection-option-cart { border-style: dashed; }
.selection-btn-cart { color: var(--color-text-secondary); background-color: var(--color-surface-alt); border: 1px solid var(--color-border); }
.selection-btn-cart:hover { background-color: var(--color-surface); }

/* Input Dialog */
.input-dialog-label { display: block; font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); color: var(--color-text-secondary); margin-bottom: var(--space-sm); }
.input-dialog-input {
    display: block; width: 100%; height: 40px; padding: 0 var(--space-md);
    font-family: var(--font-primary); font-size: var(--font-size-md); color: var(--color-text);
    background-color: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--border-radius); transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.input-dialog-input:focus { outline: none; border-color: var(--color-brand); box-shadow: 0 0 0 3px rgba(0, 84, 166, 0.12); }
.confirm-btn-primary { color: var(--color-text-inverse); background-color: var(--color-brand); border: 1px solid var(--color-brand); }
.confirm-btn-primary:hover { background-color: var(--color-brand-dark); border-color: var(--color-brand-dark); }


/* --------------------------------------------------------------------------
   Panel Container
   -------------------------------------------------------------------------- */
#project-panel {
    position: fixed; top: 0; right: 0; bottom: 0;
    width: var(--project-panel-width); z-index: 200;
    display: flex; flex-direction: column;
    background-color: var(--color-surface); border-left: 1px solid var(--color-border);
    box-shadow: var(--shadow-panel); transform: translateX(100%); transition: transform var(--transition-slow);
}
#project-panel.open { transform: translateX(0); }

#project-panel-header {
    display: flex; align-items: center; justify-content: space-between;
    height: var(--top-bar-height); padding: 0 var(--space-xl);
    background: linear-gradient(160deg, #002B5C 0%, #004A8F 40%, #1873C4 100%);
    color: var(--color-text-inverse); flex-shrink: 0;
}
#project-panel-title { font-size: var(--font-size-lg); font-weight: var(--font-weight-bold); letter-spacing: -0.02em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15); }

#btn-project-close {
    display: flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border-radius: var(--border-radius);
    color: var(--color-text-inverse); transition: background-color var(--transition-fast);
}
#btn-project-close:hover { background-color: rgba(255, 255, 255, 0.2); }

#project-panel-toolbar {
    display: flex; flex-direction: column; gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-bottom: 1px solid var(--color-border-light); background-color: var(--color-surface-alt); flex-shrink: 0;
}

#project-panel-toolbar-row2 {
    display: flex !important; flex-direction: row !important; gap: var(--space-sm);
}

#project-panel-toolbar-row2 > .project-btn {
    flex: 1;
}

.project-btn {
    display: flex; align-items: center; justify-content: center;
    height: 34px; padding: 0 var(--space-md); font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold); color: var(--color-brand);
    background-color: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
    gap: var(--space-xs);
}
.project-btn:hover:not(:disabled) { color: var(--color-brand-dark); background-color: var(--color-brand-light); border-color: var(--color-brand); }
.project-btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* Preview Schedule — full-width blue prominent button */
#btn-preview-schedule {
    width: 100%;
    height: 42px;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-bold);
    color: #FFFFFF;
    background: linear-gradient(135deg, #004A8F 0%, #1873C4 100%);
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 84, 166, 0.35);
    letter-spacing: 0.01em;
}
#btn-preview-schedule:hover:not(:disabled) {
    color: #FFFFFF;
    background: linear-gradient(135deg, #002B5C 0%, #004A8F 100%);
    border: none;
    box-shadow: 0 4px 16px rgba(0, 84, 166, 0.45);
    transform: translateY(-1px);
}
#btn-preview-schedule:disabled {
    background: linear-gradient(135deg, #004A8F 0%, #1873C4 100%);
    border: none;
    opacity: 0.45;
}

#project-panel-body { flex: 1; overflow-y: auto; padding: var(--space-lg) var(--space-xl); }

#project-empty {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: var(--space-md); padding: var(--space-3xl) var(--space-lg); text-align: center;
}

/* Empty state icon for project panel */
#project-empty::before {
    content: '';
    display: block;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background-color: var(--color-brand-light);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%230054A6' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    margin-bottom: var(--space-sm);
    flex-shrink: 0;
}

#project-empty p { font-size: var(--font-size-sm); color: var(--color-text-muted); line-height: 1.7; }
#project-empty strong { color: var(--color-text-secondary); }


/* --------------------------------------------------------------------------
   System Cards
   -------------------------------------------------------------------------- */
#project-systems-list { display: flex; flex-direction: column; gap: var(--space-md); }

.project-system-card {
    background-color: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg); overflow: hidden;
    border-left: 3px solid var(--color-brand);
    transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
    box-shadow: var(--shadow-sm);
    animation: content-fade-in 0.3s ease-out;
}
.project-system-card:hover {
    border-color: var(--color-brand);
    box-shadow: 0 4px 12px rgba(0, 84, 166, 0.12), 0 8px 24px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}

.project-card-header {
    display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md); background: linear-gradient(135deg, var(--color-brand-light) 0%, #D4E4F5 100%);
    border-bottom: 1px solid rgba(0, 84, 166, 0.12);
}
.project-card-title-wrap { display: flex; align-items: center; min-width: 0; flex: 1; }
.project-card-title { font-size: var(--font-size-sm); font-weight: var(--font-weight-bold); color: var(--color-brand-dark); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.project-card-subtitle { font-size: var(--font-size-xs); font-weight: var(--font-weight-regular); color: var(--color-text-secondary); margin-left: var(--space-sm); white-space: nowrap; }

.btn-remove-system {
    display: flex; align-items: center; justify-content: center;
    width: 26px; height: 26px; flex-shrink: 0; border-radius: var(--border-radius);
    color: var(--color-text-muted); transition: color var(--transition-fast), background-color var(--transition-fast);
}
.btn-remove-system:hover { color: var(--color-danger); background-color: var(--color-danger-bg); }

.project-card-body { padding: var(--space-md); display: flex; flex-direction: column; gap: var(--space-sm); }

.project-indoor-row { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-xs) 0; }
.project-indoor-row:not(:last-child) { border-bottom: 1px solid var(--color-border-light); padding-bottom: var(--space-sm); }
.project-indoor-label { flex-shrink: 0; width: 80px; font-size: var(--font-size-xs); font-weight: var(--font-weight-bold); color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: 0.04em; }
.project-indoor-model { font-size: var(--font-size-xs); font-family: var(--font-mono); color: var(--color-text); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.project-outdoor-row { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-xs) 0; border-bottom: 1px solid var(--color-border-light); padding-bottom: var(--space-sm); margin-bottom: var(--space-xs); }
.project-outdoor-label { flex-shrink: 0; width: 80px; font-size: var(--font-size-xs); font-weight: var(--font-weight-bold); color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: 0.04em; }
.project-outdoor-model { font-size: var(--font-size-xs); font-family: var(--font-mono); color: var(--color-text); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.project-tag-input {
    width: 72px; height: 26px; padding: 0 var(--space-xs);
    font-family: var(--font-mono); font-size: var(--font-size-xs); font-weight: var(--font-weight-bold);
    color: var(--color-brand-dark); background-color: #FFFDE7;
    border: 1.5px solid rgba(0, 84, 166, 0.25); border-radius: var(--border-radius); text-align: center;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}
.project-tag-input:focus { outline: none; border-color: var(--color-brand); box-shadow: 0 0 0 3px rgba(0, 84, 166, 0.12); background-color: #FFFFFF; }

.project-accessories-row { display: flex; align-items: flex-start; gap: var(--space-sm); padding-top: var(--space-sm); border-top: 1px solid var(--color-border-light); margin-top: var(--space-xs); }
.project-idu-acc-row { border-top: none; margin-top: 0; padding-top: var(--space-xxs); padding-left: var(--space-sm); }
.project-accessories-label { flex-shrink: 0; width: 80px; font-size: var(--font-size-xs); font-weight: var(--font-weight-bold); color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: 0.04em; padding-top: var(--space-xxs); }
.project-accessories-input {
    flex: 1; min-height: 26px; padding: var(--space-xs) var(--space-sm);
    font-family: var(--font-primary); font-size: var(--font-size-xs); color: var(--color-text);
    background-color: var(--color-cell-editable-bg); border: 1px solid var(--color-border);
    border-radius: var(--border-radius); resize: vertical;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.project-accessories-input:focus { outline: none; border-color: var(--color-brand); box-shadow: 0 0 0 3px rgba(0, 84, 166, 0.12); }

.project-card-docs-badge {
    display: inline-flex; align-items: center; gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm); margin-top: var(--space-sm);
    font-size: var(--font-size-xs); font-weight: var(--font-weight-medium);
    color: var(--color-text-muted); background-color: var(--color-surface-alt);
    border-radius: 999px; border: 1px solid var(--color-border-light);
}
.project-card-docs-badge svg { flex-shrink: 0; }

/* Docs badge as clickable button */
.project-card-docs-btn {
    cursor: pointer;
    width: 100%;
    transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}
.project-card-docs-btn:hover {
    color: var(--color-brand);
    background-color: var(--color-brand-light);
    border-color: var(--color-brand);
    transform: translateY(-1px);
}
.docs-badge-chevron {
    flex-shrink: 0;
    margin-left: auto;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}
.project-card-docs-btn:hover .docs-badge-chevron {
    opacity: 1;
}

/* --------------------------------------------------------------------------
   Documents Popup
   -------------------------------------------------------------------------- */
.docs-popup-backdrop {
    position: fixed;
    inset: 0;
    z-index: 250;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 10, 30, 0.4);
    backdrop-filter: blur(3px);
    opacity: 0;
    transition: opacity 0.2s ease;
}
.docs-popup-backdrop.docs-popup-visible {
    opacity: 1;
}

.docs-popup {
    width: 440px;
    max-width: 92vw;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    background-color: var(--color-surface);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 12px 40px rgba(0, 20, 60, 0.25);
    overflow: hidden;
    transform: translateY(10px);
    transition: transform 0.2s ease;
}
.docs-popup-backdrop.docs-popup-visible .docs-popup {
    transform: translateY(0);
}

.docs-popup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-xl);
    background: linear-gradient(160deg, #002B5C 0%, #004A8F 60%, #1873C4 100%);
    color: var(--color-text-inverse);
    flex-shrink: 0;
}
.docs-popup-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.01em;
}

.docs-popup-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: var(--border-radius);
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}
.docs-popup-close:hover {
    color: #FFFFFF;
    background-color: rgba(255, 255, 255, 0.2);
}

.docs-popup-subtitle {
    padding: var(--space-sm) var(--space-xl);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand-dark);
    background-color: var(--color-brand-light);
    border-bottom: 1px solid var(--color-border-light);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-shrink: 0;
}

.docs-popup-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-sm) 0;
}

.docs-popup-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-xl);
    transition: background-color var(--transition-fast);
}
.docs-popup-row:hover {
    background-color: var(--color-surface-alt);
}

.docs-popup-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--border-radius);
    background-color: var(--color-brand-light);
    color: var(--color-brand);
}

.docs-popup-label {
    flex: 1;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.docs-popup-type {
    flex-shrink: 0;
    font-size: 10px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    padding: 2px var(--space-xs);
    background-color: var(--color-surface-alt);
    border-radius: var(--border-radius);
    letter-spacing: 0.03em;
}

.docs-popup-action {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--border-radius);
    color: var(--color-text-muted);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    text-decoration: none;
}
.docs-popup-open:hover {
    color: var(--color-brand);
    background-color: var(--color-brand-light);
}
.docs-popup-download:hover {
    color: var(--color-success);
    background-color: var(--color-success-bg);
}

@media (max-width: 480px) {
    .docs-popup {
        width: 100%;
        max-width: 100%;
        max-height: 90vh;
        border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
        margin-top: auto;
    }
    .docs-popup-backdrop {
        align-items: flex-end;
    }
}


/* --------------------------------------------------------------------------
   Panel Footer
   -------------------------------------------------------------------------- */
#project-panel-footer {
    flex-shrink: 0; padding: 0;
    border-top: none; background-color: var(--color-surface-alt);
}
#project-export-group { display: flex; flex-direction: column; gap: var(--space-sm); }

.export-btn {
    display: flex; align-items: center; justify-content: center; gap: var(--space-sm);
    width: 100%; height: 38px; padding: 0 var(--space-lg);
    font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold);
    color: var(--color-brand); background-color: var(--color-surface);
    border: 1px solid var(--color-border); border-radius: var(--border-radius);
    transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}
.export-btn:hover:not(:disabled) { color: var(--color-brand-dark); background-color: var(--color-brand-light); border-color: var(--color-brand); transform: translateY(-1px); }

.export-btn-preview {
    color: var(--color-text-inverse);
    background-color: var(--color-brand);
    border-color: var(--color-brand);
    box-shadow: 0 2px 6px rgba(0, 84, 166, 0.25);
}
.export-btn-preview:hover:not(:disabled) {
    color: var(--color-text-inverse);
    background-color: var(--color-brand-dark);
    border-color: var(--color-brand-dark);
    box-shadow: 0 4px 12px rgba(0, 84, 166, 0.3);
}
.export-btn-preview:disabled {
    background-color: var(--color-brand);
    border-color: var(--color-brand);
}

.export-btn-primary { color: var(--color-text-inverse); background-color: var(--color-brand); border-color: var(--color-brand); }
.export-btn-primary:hover:not(:disabled) { color: var(--color-text-inverse); background-color: var(--color-brand-dark); border-color: var(--color-brand-dark); }
.export-btn-primary:disabled { background-color: var(--color-brand); border-color: var(--color-brand); }

/* Hide download buttons from panel (still in DOM for JS triggers) */
.panel-hidden-btn {
    display: none !important;
}


/* --------------------------------------------------------------------------
   Preview Documents Section
   -------------------------------------------------------------------------- */
.sp-docs-section {
    border-top: 3px solid var(--color-brand);
    background-color: var(--color-surface);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
    overflow: hidden;
}

.sp-docs-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-xl);
    background: linear-gradient(160deg, #002B5C 0%, #17528F 60%, #1A6AB8 100%);
    color: var(--color-text-inverse);
}
.sp-docs-header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.sp-docs-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.sp-docs-download-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    height: 36px;
    padding: 0 var(--space-xl);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand-dark);
    background-color: #FFFFFF;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    white-space: nowrap;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
}

.sp-docs-download-btn:hover {
    background-color: var(--color-brand-light);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.sp-docs-download-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.sp-docs-download-btn .sp-dl-spinner {
    display: none;
    animation: loading-spin 0.7s linear infinite;
}

.sp-docs-download-btn.sp-dl-loading .sp-dl-icon {
    display: none;
}

.sp-docs-download-btn.sp-dl-loading .sp-dl-spinner {
    display: inline-block;
}

.sp-docs-download-btn.sp-dl-loading {
    opacity: 0.85;
    pointer-events: none;
}

/* Schedule include options */
.sp-docs-options {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    padding: var(--space-md) var(--space-xl);
    background-color: var(--color-surface-alt);
    border-bottom: 1px solid var(--color-border);
}

.sp-docs-option {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    cursor: pointer;
}

.sp-docs-option input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-brand);
}

.sp-docs-select-all-wrap {
    margin-left: auto;
}

/* System document cards */
.sp-docs-list {
    flex: 1;
    min-width: 0;
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.sp-doc-card {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: box-shadow var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.sp-doc-card:hover {
    box-shadow: 0 2px 8px rgba(0, 84, 166, 0.1), 0 4px 16px rgba(0, 0, 0, 0.05);
    border-color: var(--color-brand);
    transform: translateY(-1px);
}

.sp-doc-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: linear-gradient(135deg, var(--color-brand-light) 0%, #D4E4F5 100%);
    border-bottom: 1px solid rgba(0, 84, 166, 0.1);
    cursor: pointer;
    user-select: none;
}

.sp-doc-card-header:hover {
    background-color: #CDDFF2;
}

.sp-doc-card-checkbox {
    width: 16px;
    height: 16px;
    accent-color: var(--color-brand);
    flex-shrink: 0;
}

.sp-doc-card-toggle {
    font-size: 10px;
    color: var(--color-text-muted);
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.sp-doc-card-toggle.sp-collapsed {
    transform: rotate(-90deg);
}

.sp-doc-card-title {
    flex: 1;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand-dark);
}

.sp-doc-card-count {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.sp-doc-card-body {
    padding: 0;
}

.sp-doc-card-body.sp-collapsed {
    display: none;
}

/* Unit group within a system card */
.sp-doc-unit {
    border-top: 1px solid var(--color-border-light);
}

.sp-doc-unit:first-child {
    border-top: none;
}

.sp-doc-unit-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg) var(--space-sm) var(--space-xl);
    background-color: var(--color-surface-alt);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.sp-doc-unit-header input[type="checkbox"] {
    width: 15px;
    height: 15px;
    accent-color: var(--color-brand);
}

/* Individual document rows */
.sp-doc-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg) var(--space-sm) calc(var(--space-xl) + var(--space-md));
    border-top: 1px solid var(--color-border-light);
    transition: background-color var(--transition-fast);
}

.sp-doc-row:hover {
    background-color: var(--color-brand-lighter);
}

.sp-doc-row input[type="checkbox"] {
    width: 15px;
    height: 15px;
    accent-color: var(--color-brand);
    flex-shrink: 0;
}

.sp-doc-row-label {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.sp-doc-row-type {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    flex-shrink: 0;
    width: 36px;
    text-align: center;
    padding: var(--space-xxs) var(--space-xs);
    background-color: var(--color-surface-alt);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border-light);
}


/* --------------------------------------------------------------------------
   Document Type Filter Pane + Body Layout
   -------------------------------------------------------------------------- */
.sp-docs-body {
    display: flex;
    gap: 0;
}

.sp-docs-type-filter {
    flex-shrink: 0;
    width: 220px;
    border-right: 1px solid var(--color-border);
    background-color: var(--color-surface-alt);
}

.sp-docs-type-filter-header {
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-border-light);
    background-color: var(--color-surface);
}

.sp-docs-type-filter-list {
    padding: var(--space-md) var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.sp-docs-type-option {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    cursor: pointer;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast);
}

.sp-docs-type-option:hover {
    background-color: var(--color-brand-lighter);
}

.sp-docs-type-option input[type="checkbox"] {
    width: 15px;
    height: 15px;
    accent-color: var(--color-brand);
    flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Overlay
   -------------------------------------------------------------------------- */
#project-overlay {
    position: fixed; inset: 0; z-index: 190;
    background-color: rgba(0, 10, 30, 0.4); opacity: 0;
    transition: opacity var(--transition-slow); pointer-events: none;
    backdrop-filter: blur(2px);
}
#project-overlay.visible { opacity: 1; pointer-events: auto; }


/* --------------------------------------------------------------------------
   Confirmation / Input Dialogs
   -------------------------------------------------------------------------- */
.confirm-overlay { position: fixed; inset: 0; z-index: 300; display: flex; align-items: center; justify-content: center; background-color: rgba(0, 10, 30, 0.5); backdrop-filter: blur(4px); }
.confirm-dialog { width: 380px; max-width: 90vw; background-color: var(--color-surface); border-radius: var(--border-radius-xl); box-shadow: 0 12px 48px rgba(0, 0, 0, 0.2), 0 4px 16px rgba(0, 0, 0, 0.1); overflow: hidden; }
.confirm-dialog-header { padding: var(--space-xl) var(--space-xl) var(--space-lg); border-bottom: 1px solid var(--color-border-light); }
.confirm-dialog-header h3 { font-size: var(--font-size-lg); font-weight: var(--font-weight-bold); color: var(--color-text); }
.confirm-dialog-body { padding: var(--space-lg) var(--space-xl); }
.confirm-dialog-body p { font-size: var(--font-size-md); color: var(--color-text-secondary); line-height: 1.7; }
.confirm-dialog-footer { display: flex; justify-content: flex-end; gap: var(--space-sm); padding: var(--space-lg) var(--space-xl); border-top: 1px solid var(--color-border-light); background-color: var(--color-surface-alt); }
.confirm-btn { height: 36px; padding: 0 var(--space-xl); font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); border-radius: var(--border-radius); transition: background-color var(--transition-fast), transform var(--transition-fast); }
.confirm-btn:hover { transform: translateY(-1px); }
.confirm-btn-cancel { color: var(--color-text-secondary); background-color: var(--color-surface); border: 1px solid var(--color-border); }
.confirm-btn-cancel:hover { background-color: var(--color-surface-alt); }
.confirm-btn-danger { color: var(--color-text-inverse); background-color: var(--color-danger); border: 1px solid var(--color-danger); }
.confirm-btn-danger:hover { background-color: #B8223A; }


/* --------------------------------------------------------------------------
   Toast
   -------------------------------------------------------------------------- */
.toast {
    position: fixed; bottom: var(--space-2xl); left: 50%;
    transform: translateX(-50%) translateY(80px); z-index: 400;
    display: flex; align-items: center; gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl); background-color: var(--color-text);
    color: var(--color-text-inverse); font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold); border-radius: 999px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25); opacity: 0;
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity var(--transition-slow);
    pointer-events: none; white-space: nowrap;
    backdrop-filter: blur(8px);
}
.toast.visible { transform: translateX(-50%) translateY(0); opacity: 1; }
.toast-success { background-color: var(--color-success); }
.toast-warning { background-color: var(--color-warning); }
.toast-danger { background-color: var(--color-danger); }


/* ==========================================================================
   SCHEDULE PREVIEW OVERLAY
   Full-screen preview of the schedule matching the PDF/Excel output.
   Editable tag, accessories, and notes fields.
   ========================================================================== */

#schedule-preview-overlay {
    position: fixed;
    inset: 0;
    z-index: 500;
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg);
    overflow: hidden;
}

body.preview-open {
    overflow: hidden;
}


/* --------------------------------------------------------------------------
   Preview Toolbar
   -------------------------------------------------------------------------- */
.sp-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--top-bar-height);
    padding: 0 var(--space-xl);
    background: linear-gradient(160deg, #002B5C 0%, #004A8F 40%, #1873C4 100%);
    color: var(--color-text-inverse);
    flex-shrink: 0;
    box-shadow: 0 2px 12px rgba(0, 20, 60, 0.3), 0 1px 3px rgba(0, 0, 0, 0.15);
}

.sp-toolbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.sp-close-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius);
    color: var(--color-text-inverse);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    transition: background-color var(--transition-fast);
}

.sp-close-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.sp-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.02em;
}

.sp-toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.sp-dl-btn {
    height: 34px;
    padding: 0 var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand);
    background-color: var(--color-text-inverse);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
}

.sp-dl-btn:hover {
    background-color: var(--color-brand-light);
    transform: translateY(-1px);
}

.sp-dl-btn-email {
    background-color: rgba(255, 255, 255, 0.12);
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: none;
    gap: var(--space-xs);
}
.sp-dl-btn-email:hover {
    background-color: rgba(255, 255, 255, 0.25);
    color: #FFFFFF;
    transform: translateY(-1px);
}


/* --------------------------------------------------------------------------
   Preview Content  (scrollable area)
   -------------------------------------------------------------------------- */
.sp-content {
    flex: 1;
    overflow: auto;
    padding: var(--space-2xl);
}

.sp-schedules-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.sp-schedules-grid > .sp-schedule-wrap:only-child {
    max-width: 1300px;
    margin: 0 auto;
}

.sp-schedule-wrap {
    background-color: var(--color-surface);
    border: 2px solid var(--color-brand);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    overflow-x: auto;
    box-shadow: 0 4px 12px rgba(0, 84, 166, 0.08), 0 12px 32px rgba(0, 0, 0, 0.08);
    min-width: 0;
}


/* --------------------------------------------------------------------------
   Preview Title Bar
   -------------------------------------------------------------------------- */
.sp-schedule-title {
    text-align: center;
    padding: var(--space-lg);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-surface-alt) 100%);
    border-bottom: 2px solid var(--color-brand);
    letter-spacing: -0.01em;
}


/* --------------------------------------------------------------------------
   Preview Section Labels
   -------------------------------------------------------------------------- */
.sp-section-label {
    text-align: center;
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-inverse);
    background: linear-gradient(160deg, #002B5C 0%, #17528F 60%, #1A6AB8 100%);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}


/* --------------------------------------------------------------------------
   Preview Tables
   -------------------------------------------------------------------------- */
.sp-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-xs);
    line-height: 1.35;
    table-layout: auto;
}

.sp-table thead th {
    background-color: var(--color-header-bg);
    color: var(--color-header-text);
    font-size: 10px;
    font-weight: var(--font-weight-semibold);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: var(--space-sm) var(--space-sm);
    border: 1px solid rgba(255, 255, 255, 0.12);
    white-space: normal;
    vertical-align: middle;
    line-height: 1.35;
}

.sp-hdr1 th {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    background: linear-gradient(180deg, #1E72B8 0%, #17528F 100%);
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.15);
}

.sp-hdr2 th {
    font-size: 10px;
    font-weight: var(--font-weight-medium);
    background: linear-gradient(180deg, #2A7BC5 0%, var(--color-header-bg-sub) 100%);
    padding: var(--space-xs) var(--space-xs);
}

.sp-table tbody td {
    padding: var(--space-sm) var(--space-sm);
    border: 1px solid var(--color-cell-border);
    text-align: center;
    vertical-align: middle;
    font-size: var(--font-size-xs);
    font-family: var(--font-mono);
    color: var(--color-text);
    white-space: nowrap;
    transition: background-color var(--transition-fast);
}

.sp-cell-text {
    text-align: left;
    font-family: var(--font-primary);
}

.sp-cell-model {
    font-family: var(--font-mono);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-xs);
    letter-spacing: 0.01em;
}

.sp-cell-powered {
    font-family: var(--font-primary);
    font-style: italic;
    color: var(--color-text-muted);
    text-align: center;
    font-size: var(--font-size-xs);
}

.sp-empty {
    color: var(--color-text-muted);
}

.sp-cell-edit {
    padding: 0;
    background-color: var(--color-cell-editable-bg);
}


/* --------------------------------------------------------------------------
   Preview Tag / Symbol Column Widths
   -------------------------------------------------------------------------- */
.sp-col-sym,
.sp-col-odu-sym {
    min-width: 100px;
    width: 100px;
}

.sp-table td:has(.sp-input-tag) {
    min-width: 100px;
    width: 100px;
}


/* --------------------------------------------------------------------------
   Preview Editable Inputs
   -------------------------------------------------------------------------- */
.sp-input {
    width: 100%;
    height: 100%;
    min-height: 28px;
    padding: var(--space-xs) var(--space-xs);
    border: none;
    background: transparent;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    text-align: center;
    transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.sp-input:focus {
    outline: none;
    background-color: #FFFFFF;
    box-shadow: inset 0 0 0 2px var(--color-brand);
}

.sp-input-tag {
    min-width: 100px;
    text-align: center;
}

.sp-input-acc {
    text-align: left;
    font-family: var(--font-primary);
}


/* --------------------------------------------------------------------------
   Preview Notes Section
   -------------------------------------------------------------------------- */
.sp-notes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    padding: var(--space-xl) var(--space-2xl);
    border-top: 2px solid var(--color-border);
    background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-surface-alt) 100%);
}

.sp-notes-heading {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand-dark);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-brand);
}

.sp-notes-line {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.sp-notes-num {
    flex-shrink: 0;
    width: 24px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand);
    text-align: right;
    opacity: 0.6;
}

.sp-input-note {
    flex: 1;
    height: 30px;
    padding: 0 var(--space-md);
    border: 1.5px solid var(--color-border-light);
    border-radius: var(--border-radius);
    background-color: var(--color-surface);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    text-align: left;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.sp-input-note:focus {
    outline: none;
    border-color: var(--color-brand);
    box-shadow: 0 0 0 3px rgba(0, 84, 166, 0.1);
}

.sp-input-note:not(:placeholder-shown) {
    background-color: #FAFBFF;
    border-color: var(--color-brand);
    border-left: 3px solid var(--color-brand);
}


/* --------------------------------------------------------------------------
   Preview Toolbar Buttons (undo/redo, auto-number, columns)
   -------------------------------------------------------------------------- */
.sp-tool-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    height: 32px;
    padding: 0 var(--space-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: rgba(255, 255, 255, 0.85);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}

.sp-tool-btn:hover:not(:disabled) {
    color: #FFFFFF;
    background-color: rgba(255, 255, 255, 0.22);
    transform: translateY(-1px);
}

.sp-tool-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.sp-tool-btn svg {
    flex-shrink: 0;
}

.sp-toolbar-sep {
    display: inline-block;
    width: 1px;
    height: 22px;
    background-color: rgba(255, 255, 255, 0.15);
    margin: 0 var(--space-xs);
}

.sp-col-btn-wrap {
    position: relative;
}


/* --------------------------------------------------------------------------
   Preview Column Visibility Panel
   -------------------------------------------------------------------------- */
.sp-col-panel {
    position: absolute;
    top: var(--top-bar-height);
    right: var(--space-xl);
    z-index: 520;
    width: 270px;
    max-height: calc(100vh - var(--top-bar-height) - 20px);
    overflow-y: auto;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.sp-col-panel-header {
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border-light);
    background-color: var(--color-surface-alt);
}

.sp-col-panel-section {
    padding: var(--space-sm) var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.sp-col-panel-section:last-child {
    border-bottom: none;
}

.sp-col-panel-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.sp-col-panel-schedule-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand);
    padding: var(--space-sm) var(--space-lg);
    margin-top: var(--space-xs);
    border-top: 1px solid var(--color-border-light);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.sp-col-panel-schedule-label:first-child {
    border-top: none;
    margin-top: 0;
}

.sp-autonumber-section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand);
    padding: var(--space-sm) 0 var(--space-xs) 0;
    margin-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.sp-autonumber-section-title:first-child {
    border-top: none;
    margin-top: 0;
}

.sp-col-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    cursor: pointer;
}

.sp-col-toggle input[type="checkbox"] {
    width: 15px;
    height: 15px;
    accent-color: var(--color-brand);
    flex-shrink: 0;
}


/* --------------------------------------------------------------------------
   Preview Bulk Action Bar
   -------------------------------------------------------------------------- */
.sp-bulk-bar {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-xl);
    background-color: var(--color-brand-light);
    border-bottom: 1px solid var(--color-brand);
    flex-shrink: 0;
}

#sp-bulk-count {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand-dark);
    margin-right: auto;
}

.sp-bulk-btn {
    height: 28px;
    padding: 0 var(--space-lg);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-brand);
    background-color: var(--color-surface);
    border: 1px solid var(--color-brand);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sp-bulk-btn:hover {
    color: var(--color-text-inverse);
    background-color: var(--color-brand);
}

.sp-bulk-btn-danger {
    color: var(--color-danger);
    border-color: var(--color-danger);
}

.sp-bulk-btn-danger:hover {
    color: var(--color-text-inverse);
    background-color: var(--color-danger);
}


/* --------------------------------------------------------------------------
   Preview Action Column (checkboxes, drag handle, reorder, duplicate, delete)
   -------------------------------------------------------------------------- */
.sp-col-action {
    width: 140px;
    min-width: 140px;
    max-width: 140px;
}

.sp-cell-action {
    padding: var(--space-sm) var(--space-xs) !important;
    background-color: var(--color-surface-alt) !important;
    vertical-align: top !important;
    border-right: 2px solid var(--color-brand) !important;
}

.sp-action-wrap {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-xxs) 0;
}

/* Top row: checkbox + system label + drag handle */
.sp-action-top {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--color-border-light);
}

.sp-row-checkbox {
    width: 15px;
    height: 15px;
    accent-color: var(--color-brand);
    cursor: pointer;
    flex-shrink: 0;
}

.sp-entry-num {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand-dark);
    flex: 1;
    white-space: nowrap;
}

.sp-drag-handle {
    cursor: grab;
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1;
    user-select: none;
    flex-shrink: 0;
    transition: color var(--transition-fast);
}

.sp-drag-handle:hover {
    color: var(--color-brand);
}

.sp-drag-handle:active {
    cursor: grabbing;
}

/* Move up/down buttons row */
.sp-action-move {
    display: flex;
    gap: 3px;
}

.sp-act-move {
    flex: 1;
}

/* Duplicate / Delete row */
.sp-action-ops {
    display: flex;
    gap: 3px;
}

.sp-act-dup,
.sp-act-del {
    flex: 1;
}

/* Shared button base */
.sp-act-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    height: 24px;
    padding: 0 var(--space-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-brand);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
    transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
}

.sp-act-btn:hover {
    color: var(--color-text-inverse);
    background-color: var(--color-brand);
    border-color: var(--color-brand);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 84, 166, 0.2);
}

/* Duplicate button */
.sp-act-dup {
    color: var(--color-brand);
    border-color: rgba(0, 84, 166, 0.2);
    background-color: var(--color-brand-lighter);
}

.sp-act-dup:hover {
    color: var(--color-text-inverse);
    background-color: var(--color-brand);
    border-color: var(--color-brand);
}

/* Delete button */
.sp-act-del {
    color: var(--color-danger);
    border-color: rgba(209, 41, 61, 0.2);
    background-color: #FEF2F3;
}

.sp-act-del:hover {
    color: var(--color-text-inverse);
    background-color: var(--color-danger);
    border-color: var(--color-danger);
    box-shadow: 0 2px 4px rgba(209, 41, 61, 0.2);
}


/* --------------------------------------------------------------------------
   Preview Indoor Unit Reorder (multi-zone systems)
   -------------------------------------------------------------------------- */
.sp-idu-reorder {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-top: var(--space-xs);
    padding-top: var(--space-xs);
    border-top: 1px solid var(--color-border);
    width: 100%;
}

.sp-idu-reorder-title {
    font-size: 9px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    text-align: center;
    margin-bottom: 1px;
}

.sp-idu-reorder-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
}

.sp-idu-reorder-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-secondary);
    width: 52px;
    text-align: right;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sp-idu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 20px;
    font-size: 10px;
    color: var(--color-brand);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
    line-height: 1;
    cursor: pointer;
}

.sp-idu-btn:hover {
    color: var(--color-text-inverse);
    background-color: var(--color-brand);
    border-color: var(--color-brand);
}

.sp-idu-btn-spacer {
    display: inline-block;
    width: 22px;
    height: 20px;
}


/* --------------------------------------------------------------------------
   Preview Drag & Drop States
   -------------------------------------------------------------------------- */
.sp-table tbody tr.sp-dragging td {
    opacity: 0.35;
}

.sp-table tbody tr.sp-drop-above td {
    box-shadow: inset 0 3px 0 0 var(--color-brand);
}

.sp-table tbody tr.sp-drop-below td {
    box-shadow: inset 0 -3px 0 0 var(--color-brand);
}


/* --------------------------------------------------------------------------
   Preview Selected Row Highlight
   -------------------------------------------------------------------------- */
.sp-table tbody tr.sp-row-selected td {
    background-color: var(--color-brand-light) !important;
}

.sp-table tbody tr.sp-row-selected td.sp-cell-edit {
    background-color: #DCE8F5 !important;
}

.sp-table tbody tr.sp-row-selected td.sp-cell-action {
    background-color: var(--color-brand-light) !important;
}


/* --------------------------------------------------------------------------
   Preview Select-All Checkbox in Header
   -------------------------------------------------------------------------- */
.sp-table thead th.sp-col-action {
    padding: var(--space-xs);
    text-align: center;
}

.sp-table thead th.sp-col-action input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: #FFFFFF;
    cursor: pointer;
}


/* --------------------------------------------------------------------------
   Auto-Number Dialog Labels
   -------------------------------------------------------------------------- */
.sp-autonumber-label {
    margin-top: var(--space-sm);
}


/* --------------------------------------------------------------------------
   Preview Dialog Overlay (must sit above the z-500 preview)
   -------------------------------------------------------------------------- */
.sp-dialog-overlay {
    z-index: 600;
}


/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1200px) {
    #project-panel { box-shadow: var(--shadow-panel); }
}

@media (max-width: 768px) {
    #project-panel { width: 100%; max-width: 400px; }
    #project-panel-header { padding: 0 var(--space-lg); }
    #project-panel-toolbar { padding: var(--space-sm) var(--space-lg); }
    #project-panel-body { padding: var(--space-md) var(--space-lg); }
    #project-panel-footer { padding: 0; }
    #projects-page-header { flex-direction: column; align-items: flex-start; }
    #projects-grid { grid-template-columns: 1fr; }
    #btn-active-target { max-width: 140px; }
    .selection-dialog { width: 90vw; }

    .sp-toolbar { padding: 0 var(--space-md); }
    .sp-content { padding: var(--space-md); }
    .sp-notes { grid-template-columns: 1fr; gap: var(--space-lg); padding: var(--space-lg); }
    .sp-toolbar-right { gap: var(--space-xs); }
    .sp-dl-btn { font-size: var(--font-size-xs); padding: 0 var(--space-sm); }
    .sp-tool-btn { font-size: var(--font-size-xs); padding: 0 var(--space-xs); height: 28px; }
    .sp-col-panel { right: var(--space-md); width: 220px; }
    .sp-bulk-bar { padding: var(--space-xs) var(--space-md); gap: var(--space-sm); }
    .sp-col-action { width: 110px; min-width: 110px; max-width: 110px; }

    .floating-sidebar-btn {
        padding: var(--space-sm) var(--space-md);
    }
    .floating-sidebar-label { max-width: 80px; }
}

@media (max-width: 480px) {
    #project-panel { max-width: 100%; }
}

/* --------------------------------------------------------------------------
   1080p-specific adjustments  (1920×1080 and similar)
   -------------------------------------------------------------------------- */
@media (max-width: 1920px) {
    .sp-content {
        padding: var(--space-xl);
    }

    .sp-schedules-grid {
        gap: var(--space-xl);
    }

    .sp-schedule-title {
        padding: var(--space-md);
        font-size: var(--font-size-lg);
    }

    .sp-col-action {
        width: 120px;
        min-width: 120px;
        max-width: 120px;
    }
}