/* ==========================================================================
   CSS Variables & Design Tokens (Light/Dark Mode Support)
   ========================================================================== */
:root {
    --font-primary: 'Inter', 'Sarabun', sans-serif;
    
    /* Light Theme Palette */
    --bg-app: #f4f6fa;
    --bg-card: rgba(255, 255, 255, 0.8);
    --bg-sidebar: #ffffff;
    --border-color: rgba(226, 232, 240, 0.8);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: rgba(79, 70, 229, 0.1);
    
    --secondary: #64748b;
    --secondary-hover: #475569;
    
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --danger-light: rgba(239, 68, 68, 0.1);
    
    --success: #10b981;
    --success-hover: #059669;
    --success-light: rgba(16, 185, 129, 0.1);
    
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.1);
    
    --info: #06b6d4;
    --info-light: rgba(6, 182, 212, 0.1);

    /* Glassmorphism Accents */
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --sidebar-shadow: 4px 0 24px rgba(0, 0, 0, 0.02);
    
    --transition-speed: 0.3s;
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --border-radius-sm: 6px;

    /* Attendance States colors */
    --p-color: #10b981; /* Present */
    --a-color: #ef4444; /* Absent */
    --l-color: #f59e0b; /* Late */
    --s-color: #06b6d4; /* Sick */
    --e-color: #8b5cf6; /* Excused */
}

.dark-theme {
    /* Dark Theme Palette */
    --bg-app: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-sidebar: #0f172a;
    --border-color: rgba(51, 65, 85, 0.5);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: rgba(99, 102, 241, 0.2);
    
    --secondary: #475569;
    --secondary-hover: #334155;
    
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --sidebar-shadow: 4px 0 24px rgba(0, 0, 0, 0.15);
}

/* ==========================================================================
   Base & Reset Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-app);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

button, input, select {
    font-family: inherit;
    font-size: inherit;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */
.app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
    position: relative;
}

/* Sidebar Layout */
.sidebar {
    width: 260px;
    height: 100%;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--sidebar-shadow);
    z-index: 100;
    transition: width var(--transition-speed), background-color var(--transition-speed);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
    padding-left: 8px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--info));
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.sidebar-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--info));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.nav-btn {
    border: none;
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-weight: 500;
    text-align: left;
    transition: all var(--transition-speed) ease;
}

.nav-btn svg {
    transition: transform var(--transition-speed);
}

.nav-btn:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

.nav-btn:hover svg {
    transform: translateX(2px);
}

.nav-btn.active {
    background: linear-gradient(135deg, var(--primary), rgba(79, 70, 229, 0.8));
    color: white;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
}

.sidebar-footer {
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.theme-toggle-btn {
    border: 1px solid var(--border-color);
    background-color: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    padding: 10px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-speed);
}

.theme-toggle-btn:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

.dark-theme .sun-icon { display: block; }
.dark-theme .moon-icon { display: none; }
.light-theme .sun-icon { display: none; }
.light-theme .moon-icon { display: block; }

/* Main Content Area */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    height: 100%;
}

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 40px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-sidebar);
    backdrop-filter: blur(12px);
    transition: background-color var(--transition-speed);
}

.header-info h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

.text-muted {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.calendar-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background-color: var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.content-body {
    padding: 40px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* ==========================================================================
   Tab View System
   ========================================================================== */
.tab-content {
    display: none;
    animation: fadeIn 0.4s ease;
    flex-direction: column;
    gap: 24px;
    flex: 1;
}

.tab-content.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Dashboard Tab Components
   ========================================================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.stat-icon {
    width: 54px;
    height: 54px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.attendance-bg { background-color: var(--success-light); color: var(--success); }
.work-bg { background-color: var(--primary-light); color: var(--primary); }
.student-bg { background-color: var(--info-light); color: var(--info); }
.subject-bg { background-color: var(--warning-light); color: var(--warning); }

.stat-info h3 {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.dashboard-details {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    margin-top: 8px;
}

.dashboard-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    box-shadow: var(--card-shadow);
}

.dashboard-panel h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.dashboard-panel-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.top-list-container h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.dashboard-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 250px;
    overflow-y: auto;
}

.dashboard-list li {
    padding: 10px 14px;
    background-color: var(--bg-app);
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dashboard-list li span.rate {
    color: var(--primary);
    font-weight: 700;
}

.insight-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px;
    background-color: var(--bg-app);
    border-radius: var(--border-radius-md);
    margin-bottom: 12px;
}

.insight-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.insight-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.text-danger { color: var(--danger) !important; }

/* ==========================================================================
   Filter and Control Bars
   ========================================================================== */
.control-bar {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 20px 24px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.filter-group-wrap {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.filter-group label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.form-control {
    background-color: var(--bg-app);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 16px;
    border-radius: var(--border-radius-md);
    outline: none;
    font-size: 0.9rem;
    transition: border-color var(--transition-speed);
}

.form-control:focus {
    border-color: var(--primary);
}

select.form-control {
    cursor: pointer;
    padding-right: 32px;
}

.subject-select-box {
    min-width: 180px;
}

.button-group {
    display: flex;
    background-color: var(--bg-app);
    padding: 4px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}

.btn-secondary {
    background-color: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 500;
    font-size: 0.85rem;
    transition: all var(--transition-speed);
}

.btn-secondary:hover {
    color: var(--text-primary);
}

.btn-secondary.active {
    background-color: var(--bg-card);
    color: var(--primary);
    box-shadow: var(--card-shadow);
}

/* ==========================================================================
   Day Selector Sub-components
   ========================================================================== */
.day-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin: 20px 0;
}

.day-nav-btn {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 18px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-speed);
}

.day-nav-btn:hover {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

.date-picker-input {
    font-weight: 600;
    text-align: center;
    font-size: 1.05rem;
    cursor: pointer;
}

.bulk-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   Table & Grid Matrix Layouts
   ========================================================================== */
.view-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    box-shadow: var(--card-shadow);
    flex: 1;
}

.sub-view {
    display: none;
    animation: fadeIn 0.3s ease;
}

.sub-view.active {
    display: block;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.tracker-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 8px;
    font-size: 0.95rem;
}

.tracker-table th, .tracker-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
    vertical-align: middle;
}

.tracker-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background-color: var(--bg-app);
}

.tracker-table tr:hover td {
    background-color: rgba(248, 250, 252, 0.5);
}

.dark-theme .tracker-table tr:hover td {
    background-color: rgba(30, 41, 59, 0.4);
}

.text-center { text-align: center !important; }
.text-left { text-align: left !important; }

/* Status Button Checkboxes (Attendance & Work) */
.status-pill-group {
    display: inline-flex;
    background-color: var(--bg-app);
    padding: 3px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
}

.status-pill-btn {
    border: none;
    background: transparent;
    cursor: pointer;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: var(--text-muted);
}

/* Attendance Colors active states */
.status-pill-btn[data-status="ม"].active { background-color: var(--p-color); color: white; }
.status-pill-btn[data-status="ข"].active { background-color: var(--a-color); color: white; }
.status-pill-btn[data-status="ล"].active { background-color: var(--l-color); color: white; }
.status-pill-btn[data-status="ป"].active { background-color: var(--s-color); color: white; }

/* Work Status Colors active states */
.status-pill-btn[data-status="ส"].active { background-color: var(--p-color); color: white; }
.status-pill-btn[data-status="ช"].active { background-color: var(--l-color); color: white; }
.status-pill-btn[data-status="ม"].active { background-color: var(--a-color); color: white; }

.status-pill-btn:hover:not(.active) {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

/* Matrix (Grid View) Styles */
.matrix-scroll {
    overflow-x: auto;
    max-height: 550px;
}

.matrix-table {
    table-layout: fixed;
    width: auto;
    min-width: 100%;
}

.matrix-table th:first-child, .matrix-table td:first-child {
    position: sticky;
    left: 0;
    background-color: var(--bg-card);
    z-index: 10;
    width: 60px;
    min-width: 60px;
    border-right: 1px solid var(--border-color);
}

.matrix-table th:nth-child(2), .matrix-table td:nth-child(2) {
    position: sticky;
    left: 60px;
    background-color: var(--bg-card);
    z-index: 10;
    width: 180px;
    min-width: 180px;
    text-align: left;
    border-right: 2px solid var(--border-color);
}

.dark-theme .matrix-table th:first-child, .dark-theme .matrix-table td:first-child,
.dark-theme .matrix-table th:nth-child(2), .dark-theme .matrix-table td:nth-child(2) {
    background-color: #1e293b;
}

.matrix-cell {
    width: 40px;
    min-width: 40px;
    padding: 10px 4px !important;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.8rem;
    transition: background-color 0.15s;
    user-select: none;
}

.matrix-cell:hover {
    background-color: var(--primary-light) !important;
}

/* Matrix Status Colors background colors */
.cell-ม { background-color: var(--success-light); color: var(--success); }
.cell-ข { background-color: var(--danger-light); color: var(--danger); }
.cell-ล { background-color: var(--warning-light); color: var(--warning); }
.cell-ป { background-color: var(--info-light); color: var(--info); }

.cell-S-work { background-color: var(--success-light); color: var(--success); }
.cell-L-work { background-color: var(--warning-light); color: var(--warning); }
.cell-M-work { background-color: var(--danger-light); color: var(--danger); }

.cell-empty { color: var(--text-muted); opacity: 0.3; }

.grid-legend {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
    font-size: 0.85rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.legend-color {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
}

.p-color { background-color: var(--success-light); color: var(--success); }
.a-color { background-color: var(--danger-light); color: var(--danger); }
.l-color { background-color: var(--warning-light); color: var(--warning); }
.s-color { background-color: var(--info-light); color: var(--info); }
.e-color { background-color: rgba(139, 92, 246, 0.15); color: var(--e-color); }

.submit-color { background-color: var(--success-light); color: var(--success); }
.late-color { background-color: var(--warning-light); color: var(--warning); }
.missing-color { background-color: var(--danger-light); color: var(--danger); }

/* ==========================================================================
   Reports / Individual Student Profile Tab
   ========================================================================== */
.reports-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 24px;
    height: calc(100vh - 190px);
}

.reports-sidebar {
    display: flex;
    flex-direction: column;
    gap: 16px;
    height: 100%;
}

.search-box {
    position: relative;
}

.reports-student-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.report-student-item {
    border: none;
    background: transparent;
    padding: 12px 16px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-speed);
}

.report-student-item:hover {
    background-color: var(--border-color);
}

.report-student-item.active {
    background-color: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

.report-student-item .student-no {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.reports-main {
    height: 100%;
    overflow-y: auto;
    padding: 32px;
}

.report-student-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.student-title-name {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
}

.student-badge-number {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.report-stats-overview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin: 24px 0;
}

/* Circular Progress Rings CSS */
.progress-ring-card {
    background-color: var(--bg-app);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 24px;
    border: 1px solid var(--border-color);
}

.circular-progress {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: conic-gradient(var(--primary) 0deg, var(--border-color) 0deg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: background var(--transition-speed);
}

#attendance-ring {
    background: conic-gradient(var(--success) 0deg, var(--border-color) 0deg);
}

.circular-progress::before {
    content: "";
    position: absolute;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--bg-app);
}

.progress-value {
    position: relative;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
}

.ring-label h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.ring-label p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.report-section {
    margin-bottom: 32px;
}

.report-section h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* Attendance Counter boxes */
.attendance-counters {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
}

.counter-box {
    border-radius: var(--border-radius-md);
    padding: 16px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.counter-num {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.counter-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.p-bg { background-color: var(--success-light); color: var(--success); }
.a-bg { background-color: var(--danger-light); color: var(--danger); }
.l-bg { background-color: var(--warning-light); color: var(--warning); }
.s-bg { background-color: var(--info-light); color: var(--info); }
.e-bg { background-color: rgba(139, 92, 246, 0.1); color: var(--e-color); }

/* Horizontal Subject Progress bar */
.subject-progress-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.subject-progress-item {
    background-color: var(--bg-app);
    padding: 16px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}

.subj-progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.subj-progress-bar-bg {
    height: 10px;
    background-color: var(--border-color);
    border-radius: 10px;
    overflow: hidden;
}

.subj-progress-bar-fill {
    height: 100%;
    border-radius: 10px;
    width: 0%;
    transition: width 0.5s ease-out;
}

/* Inner tab system */
.tab-pill-bar {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    gap: 16px;
    margin-bottom: 16px;
}

.tab-pill {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 10px 4px;
    font-weight: 600;
    cursor: pointer;
    position: relative;
}

.tab-pill.active {
    color: var(--primary);
}

.tab-pill.active::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2.5px;
    background-color: var(--primary);
    border-radius: 10px;
}

.subtab-panel {
    display: none;
}

.subtab-panel.active {
    display: block;
}

.log-list {
    list-style: none;
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 8px;
}

.log-list li {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
    display: flex;
    justify-content: space-between;
}

.log-list li:last-child {
    border-bottom: none;
}

.log-list-date {
    font-weight: 600;
    color: var(--text-secondary);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    text-align: center;
    padding: 40px;
}

.empty-icon {
    color: var(--text-muted);
    margin-bottom: 16px;
}

/* ==========================================================================
   Management Tabs (Students / Subjects)
   ========================================================================== */
.action-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 16px 24px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    margin-bottom: 8px;
}

.btn {
    border: none;
    border-radius: var(--border-radius-md);
    padding: 10px 20px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all var(--transition-speed);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-xs {
    padding: 6px 12px;
    font-size: 0.75rem;
    border-radius: var(--border-radius-sm);
}

.btn-present { background-color: var(--success-light); color: var(--success); }
.btn-present:hover { background-color: var(--success); color: white; }

.btn-submit { background-color: var(--primary-light); color: var(--primary); }
.btn-submit:hover { background-color: var(--primary); color: white; }

.btn-clear { background-color: var(--border-color); color: var(--text-secondary); }
.btn-clear:hover { background-color: var(--secondary); color: white; }

.btn-danger {
    background-color: var(--danger);
    color: white;
}

.btn-danger:hover {
    background-color: var(--danger-hover);
}

.btn-info {
    background-color: var(--info);
    color: white;
}

.btn-info:hover {
    background-color: #0891b2;
}

.empty-state-small {
    padding: 40px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Subject card layout */
.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.subject-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 180px;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-speed);
}

.subject-card:hover {
    transform: translateY(-4px);
}

.subject-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background-color: var(--subject-accent, var(--primary));
}

.subject-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

.subject-card-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.subject-card-stats {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Settings and Backups Page */
.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.settings-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.settings-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
}

.import-upload-area {
    display: flex;
    align-items: center;
    gap: 12px;
    border: 2px dashed var(--border-color);
    padding: 20px;
    border-radius: var(--border-radius-md);
    justify-content: center;
    flex-direction: column;
}

.file-name-indicator {
    font-size: 0.8rem;
}

.danger-card {
    border: 1px solid rgba(239, 68, 68, 0.3);
    background-color: var(--danger-light);
}

.warning-text {
    font-size: 0.8rem;
    font-weight: 500;
}

.warning-banner {
    background-color: var(--danger-light);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
    padding: 16px 20px;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    margin-bottom: 20px;
}

.hidden { display: none !important; }

/* ==========================================================================
   Modals & Popups
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeInOverlay 0.2s ease-out;
}

@keyframes fadeInOverlay {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-overlay.active {
    display: flex;
}

.modal-card {
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--glass-shadow);
    width: 90%;
    max-width: 480px;
    overflow: hidden;
    animation: scaleIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes scaleIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
}

.modal-close {
    border: none;
    background: transparent;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-group input[type="text"].form-control {
    width: 100%;
}

.color-palette-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.color-radio {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 2px solid transparent;
    transition: transform 0.15s;
}

.color-radio:hover {
    transform: scale(1.15);
}

.color-radio input[type="radio"] {
    opacity: 0;
    cursor: pointer;
}

.color-radio:has(input:checked) {
    border-color: var(--text-primary);
    box-shadow: 0 0 0 2px var(--bg-sidebar);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 28px;
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: var(--text-primary);
    color: var(--bg-sidebar);
    padding: 14px 24px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    font-weight: 600;
    font-size: 0.9rem;
    z-index: 2000;
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: opacity 0.3s, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Responsive & Print Custom CSS Styles
   ========================================================================== */
@media (max-width: 1024px) {
    .reports-layout {
        grid-template-columns: 240px 1fr;
    }
}

@media (max-width: 768px) {
    body {
        flex-direction: column;
    }
    
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 12px 16px;
    }
    
    .sidebar-header {
        margin-bottom: 12px;
    }
    
    .sidebar-nav {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 4px;
    }
    
    .nav-btn {
        padding: 8px 12px;
        font-size: 0.8rem;
        white-space: nowrap;
    }
    
    .nav-btn span {
        display: none; /* Hide text on mobile nav */
    }
    
    .sidebar-footer {
        display: none; /* Hide footer on mobile sidebar */
    }
    
    .top-header {
        padding: 16px 20px;
    }
    
    .content-body {
        padding: 20px;
    }
    
    .dashboard-details {
        grid-template-columns: 1fr;
    }
    
    .dashboard-panel-content {
        grid-template-columns: 1fr;
    }
    
    .reports-layout {
        grid-template-columns: 1fr;
        height: auto;
    }
    
    .reports-sidebar {
        height: 250px;
    }
    
    .attendance-counters {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
}

/* Print CSS */
@page landscape-print {
    size: A4 landscape;
    margin: 8mm;
}

@media print {
    body {
        background-color: white !important;
        color: black !important;
    }
    
    /* Default Portrait print (for Student Profile Report) */
    body:not(.print-landscape-layout) .sidebar, 
    body:not(.print-landscape-layout) .top-header, 
    body:not(.print-landscape-layout) .control-bar, 
    body:not(.print-landscape-layout) .modal-overlay, 
    body:not(.print-landscape-layout) .toast, 
    body:not(.print-landscape-layout) #btn-print-report, 
    body:not(.print-landscape-layout) .reports-sidebar, 
    body:not(.print-landscape-layout) .tab-pill-bar {
        display: none !important;
    }
    
    body:not(.print-landscape-layout) .app-container {
        height: auto;
        display: block;
    }
    
    body:not(.print-landscape-layout) .main-content {
        display: block;
        height: auto;
        overflow: visible;
    }
    
    body:not(.print-landscape-layout) .content-body {
        padding: 0;
    }
    
    body:not(.print-landscape-layout) #reports-tab {
        display: block !important;
    }
    
    body:not(.print-landscape-layout) .reports-layout {
        display: block;
        height: auto;
    }
    
    body:not(.print-landscape-layout) .reports-main {
        border: none !important;
        box-shadow: none !important;
        background: transparent !important;
        padding: 0 !important;
        overflow: visible !important;
        height: auto;
    }
    
    body:not(.print-landscape-layout) #report-student-content {
        display: block !important;
    }
    
    body:not(.print-landscape-layout) .progress-ring-card {
        border: 1px solid #ccc !important;
        background-color: transparent !important;
    }
    
    body:not(.print-landscape-layout) .circular-progress {
        background: none !important;
        border: 2px solid #333 !important;
    }
    
    body:not(.print-landscape-layout) .circular-progress::before {
        display: none;
    }
    
    body:not(.print-landscape-layout) .counter-box {
        border: 1px solid #ccc !important;
        background-color: transparent !important;
        color: black !important;
    }
    
    body:not(.print-landscape-layout) .subject-progress-item {
        border: 1px solid #ccc !important;
        background-color: transparent !important;
    }
    
    body:not(.print-landscape-layout) .subj-progress-bar-bg {
        border: 1px solid #ccc !important;
        background-color: #eee !important;
    }
    
    body:not(.print-landscape-layout) .subj-progress-bar-fill {
        background-color: black !important;
    }
    
    body:not(.print-landscape-layout) .subtab-panel {
        display: block !important;
        opacity: 1 !important;
    }

    /* Landscape print layout configuration (for Grid Matrices) */
    body.print-landscape-layout {
        width: 100% !important;
        height: auto !important;
        background-color: white !important;
        color: black !important;
    }
    
    body.print-landscape-layout .sidebar, 
    body.print-landscape-layout .top-header, 
    body.print-landscape-layout .control-bar, 
    body.print-landscape-layout .month-switcher-card, 
    body.print-landscape-layout .grid-actions-toolbar, 
    body.print-landscape-layout .day-selector, 
    body.print-landscape-layout .bulk-actions, 
    body.print-landscape-layout .grid-legend,
    body.print-landscape-layout .button-group,
    body.print-landscape-layout .modal-overlay,
    body.print-landscape-layout .toast {
        display: none !important;
    }
    
    body.print-landscape-layout .app-container {
        height: auto;
        display: block;
    }
    
    body.print-landscape-layout .main-content {
        display: block;
        height: auto;
        overflow: visible;
    }
    
    body.print-landscape-layout .content-body {
        padding: 0;
    }
    
    /* Only display the selected grid tab */
    body.print-landscape-layout .tab-content {
        display: none !important;
    }
    
    body.print-landscape-layout.print-tab-attendance #attendance-tab {
        display: block !important;
    }
    body.print-landscape-layout.print-tab-attendance #att-grid-view {
        display: block !important;
    }
    body.print-landscape-layout.print-tab-attendance #att-daily-view {
        display: none !important;
    }
    
    body.print-landscape-layout.print-tab-work #work-tab {
        display: block !important;
    }
    body.print-landscape-layout.print-tab-work #work-grid-view {
        display: block !important;
    }
    body.print-landscape-layout.print-tab-work #work-daily-view {
        display: none !important;
    }
    
    /* Format Matrix table to fit A4 Landscape perfectly */
    @page {
        size: A4 landscape;
        margin: 6mm !important;
    }
    
    body.print-landscape-layout .matrix-scroll {
        overflow: visible !important;
        max-height: none !important;
        width: 100% !important;
    }
    
    body.print-landscape-layout .matrix-table {
        width: 100% !important;
        table-layout: auto !important;
        border-collapse: collapse !important;
    }
    
    body.print-landscape-layout .matrix-table th, 
    body.print-landscape-layout .matrix-table td {
        position: static !important; /* Remove sticky */
        background-color: transparent !important;
        color: black !important;
        border: 1px solid #111 !important;
        padding: 3px 1px !important;
        font-size: 8px !important;
        line-height: 1 !important;
    }
    
    body.print-landscape-layout .matrix-table td:nth-child(2) {
        text-align: left !important;
        white-space: nowrap !important;
        padding: 3px 6px !important;
    }
    
    /* Hide day of week abbreviations on print */
    body.print-landscape-layout .matrix-table th div:nth-child(2) {
        display: none !important;
    }

    body.print-landscape-layout .matrix-table td.cell-ม { background-color: #e2fbf0 !important; color: #059669 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    body.print-landscape-layout .matrix-table td.cell-ข { background-color: #fef2f2 !important; color: #dc2626 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    body.print-landscape-layout .matrix-table td.cell-ล { background-color: #fffbeb !important; color: #d97706 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    body.print-landscape-layout .matrix-table td.cell-ป { background-color: #ecfeff !important; color: #0891b2 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }

    body.print-landscape-layout .matrix-table td.cell-S-work { background-color: #e2fbf0 !important; color: #059669 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    body.print-landscape-layout .matrix-table td.cell-L-work { background-color: #fffbeb !important; color: #d97706 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    body.print-landscape-layout .matrix-table td.cell-M-work { background-color: #fef2f2 !important; color: #dc2626 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }

    /* Show title at print time if needed (or we just print headers) */
    body.print-landscape-layout .view-container {
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
        background: transparent !important;
    }
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: var(--border-radius-lg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* ==========================================================================
   Customizable School Info Banner Styles
   ========================================================================== */
.school-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 244, 255, 0.9) 100%);
    border: 1px solid rgba(79, 70, 229, 0.15);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--glass-shadow);
    transition: transform var(--transition-speed);
}

.dark-theme .school-banner {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.85) 0%, rgba(15, 23, 42, 0.85) 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.school-banner:hover {
    transform: translateY(-2px);
}

.school-banner-content {
    display: flex;
    align-items: center;
    gap: 20px;
}

.school-logo-wrapper {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.15);
    border: 2px solid white;
}

.dark-theme .school-logo-wrapper {
    border-color: var(--border-color);
}

.school-logo-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.school-logo-placeholder {
    font-size: 2rem;
}

.school-info-wrapper {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.school-name-text {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
}

.school-system-text {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.school-grade-badge {
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    background-color: var(--primary);
    padding: 3px 10px;
    border-radius: var(--border-radius-sm);
    text-transform: uppercase;
}

.edit-school-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-weight: 600;
}

/* ==========================================================================
   Month Switcher Pills Styles
   ========================================================================== */
.month-switcher-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 20px;
    border-radius: var(--border-radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.month-switcher-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.month-pills {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    flex: 1;
}

.month-pill-btn {
    border: 1px solid var(--border-color);
    background-color: var(--bg-app);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.month-pill-btn:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

.month-pill-btn.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25);
}

/* ==========================================================================
   Student Directory (Grid Card Layout)
   ========================================================================== */
.directory-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    gap: 16px;
    flex-wrap: wrap;
}

.search-box-container {
    flex: 1;
    max-width: 400px;
}

.search-input {
    width: 100%;
    font-size: 0.95rem;
}

.directory-stats-badge {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 10px 16px;
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
    box-shadow: var(--card-shadow);
}

.student-directory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.student-profile-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
}

.student-profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--info));
    opacity: 0;
    transition: opacity 0.2s ease;
}

.student-profile-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.06);
    border-color: rgba(79, 70, 229, 0.25);
}

.student-profile-card:hover::before {
    opacity: 1;
}

.student-card-roll {
    position: absolute;
    top: 12px;
    left: 12px;
    background-color: var(--border-color);
    color: var(--text-secondary);
    font-size: 0.72rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 10px;
}

.student-card-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-bottom: 12px;
    border: 2px solid white;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

.dark-theme .student-card-photo {
    border-color: var(--text-muted);
}

.student-card-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.student-card-photo .no-avatar {
    font-size: 2.2rem;
}

.student-card-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.3;
}

.student-card-id {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.student-card-age {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ==========================================================================
   Importer Card Layout (Excel/Sheets)
   ========================================================================== */
.import-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 16px;
}

@media (max-width: 768px) {
    .import-methods {
        grid-template-columns: 1fr;
    }
}

.import-method-box {
    background-color: var(--bg-app);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.import-method-box h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.csv-upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-card);
    flex: 1;
    justify-content: center;
}

/* ==========================================================================
   Export Hub Styles
   ========================================================================== */
.export-hub-card {
    padding: 30px !important;
}

.export-hub-card h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.export-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.month-grid-selector {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
    margin-top: 8px;
}

.month-grid-btn {
    border: 1px solid var(--border-color);
    background-color: var(--bg-app);
    color: var(--text-secondary);
    padding: 8px 4px;
    border-radius: var(--border-radius-sm);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.month-grid-btn:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

.month-grid-btn.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

.export-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-icon, .btn-icon-secondary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    cursor: pointer;
}

.btn-icon {
    background-color: var(--success);
    color: white;
    border: none;
}
.btn-icon:hover {
    background-color: var(--success-hover);
}

.btn-icon-secondary {
    background-color: var(--primary);
    color: white;
    border: none;
}
.btn-icon-secondary:hover {
    background-color: var(--primary-hover);
}

/* ==========================================================================
   Detailed Student Profile Modal Layout
   ========================================================================== */
.modal-large {
    max-width: 900px !important;
    width: 90% !important;
}

.profile-detail-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 30px;
}

@media (max-width: 768px) {
    .profile-detail-layout {
        grid-template-columns: 1fr;
    }
}

.profile-card-sidebar {
    background-color: var(--bg-app);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.profile-photo-circle {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    background-color: var(--border-color);
    border: 3px solid white;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-bottom: 16px;
}

.dark-theme .profile-photo-circle {
    border-color: var(--text-secondary);
}

.profile-photo-circle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-photo-circle span {
    font-size: 3.2rem;
}

.profile-no-badge {
    background-color: var(--primary-light);
    color: var(--primary);
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    margin-top: 6px;
}

.profile-info-list {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
}

.info-item-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.info-label {
    color: var(--text-secondary);
}

.profile-card-main {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* ==========================================================================
   Photo upload in student modal
   ========================================================================== */
.photo-upload-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 6px;
}

.photo-preview-box {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background-color: var(--bg-app);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.photo-preview-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-preview-box span {
    font-size: 1.5rem;
}

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ==========================================================================
   Watermark Styles
   ========================================================================== */
.sidebar-watermark {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 12px;
    opacity: 0.6;
    letter-spacing: 0.4px;
    font-weight: 500;
    padding: 4px;
    border-radius: var(--border-radius-sm);
    transition: opacity 0.2s;
    user-select: none;
}

.sidebar-watermark:hover {
    opacity: 0.9;
}

/* Print Watermark */
@media print {
    .print-watermark {
        display: block !important;
        position: fixed;
        bottom: 8px;
        right: 15px;
        font-size: 0.65rem;
        color: #666 !important;
        font-weight: 600;
    }
}

.print-watermark {
    display: none;
}

/* Helper hidden class */
.hidden {
    display: none !important;
}

/* Subject tags on summaries and cards */
.subject-card-teacher {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 4px;
    font-style: italic;
}

.hover-underline:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Cloud Synchronization Styles
   ========================================================================== */
.sync-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background-color: var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
}

.sync-indicator:hover {
    filter: brightness(0.95);
}

.cloud-offline {
    color: var(--text-muted);
}

.cloud-syncing {
    color: var(--warning);
    background-color: var(--warning-light);
}

.cloud-synced {
    color: var(--success);
    background-color: var(--success-light);
}

.cloud-error {
    color: var(--danger);
    background-color: var(--danger-light);
}

.spinner {
    animation: spin 1.5s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Print Report Header */
.print-report-header {
    display: none;
}

@media print {
    .print-report-header {
        display: block !important;
        margin-bottom: 24px;
        text-align: center;
        width: 100%;
        color: #000000 !important;
    }
}