/* assets/css/style.css */
:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #0f172a;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-bg: rgba(30, 41, 59, 0.7);
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --success: #059669;
    --success-bg: rgba(5, 150, 105, 0.1);
    --danger: #dc2626;
    --danger-bg: rgba(220, 38, 38, 0.1);
    --warning: #d97706;
    --warning-bg: rgba(217, 119, 6, 0.1);
    --card-border: rgba(0, 0, 0, 0.08);
    --card-bg: rgba(255, 255, 255, 0.85);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(79, 70, 229, 0.1) 0px, transparent 50%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--accent-hover);
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.navbar-brand img {
    height: 40px;
    width: auto;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.navbar-item {
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.navbar-item:hover, .navbar-item.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

/* Layout container */
.container {
    flex: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.content-center {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 180px);
}

/* Glass Cards */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 2.5rem;
    width: 100%;
    box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.2), 0 8px 15px -6px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-align: center;
    background: linear-gradient(to right, #ffffff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
[data-theme="light"] .card-title {
    background: none;
    -webkit-text-fill-color: initial;
    color: var(--text-primary);
}

/* Countdown */
.countdown-container {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 2rem 0;
}

.countdown-box {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1rem;
    min-width: 90px;
    text-align: center;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.3);
}

.countdown-val {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.2;
}

.countdown-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

/* Circular Letter Guidelines */
.rules-container {
    margin-top: 2rem;
    width: 100%;
}

.rules-heading {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--warning);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.rule-card {
    background: rgba(245, 158, 11, 0.05);
    border: 1px solid rgba(245, 158, 11, 0.15);
    border-radius: 12px;
    padding: 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    transition: transform 0.2s ease;
}
.rule-card:hover {
    transform: translateY(-2px);
}

.rule-icon {
    font-size: 1.5rem;
    line-height: 1;
}

.rule-text h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.rule-text p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
    width: 100%;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 0.85rem 1rem;
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-sans);
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    background: rgba(15, 23, 42, 0.6);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    color: #ffffff;
    border: none;
    padding: 0.85rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    width: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.4);
}

.btn:active {
    transform: translateY(0);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-primary);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    box-shadow: none;
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #b91c1c 100%);
}
.btn-danger:hover {
    box-shadow: 0 5px 15px rgba(239, 68, 68, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #047857 100%);
}
.btn-success:hover {
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.4);
}

/* Grid & Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
    .navbar {
        padding: 1rem;
    }
    .navbar-menu {
        gap: 0.75rem;
    }
    .navbar-item {
        font-size: 0.85rem;
        padding: 0.4rem 0.6rem;
    }
    .card {
        padding: 1.5rem;
    }
}

/* Alert Notification */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    width: 100%;
}

.alert-danger {
    background: var(--danger-bg);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}
[data-theme="light"] .alert-danger {
    color: #991b1b;
}

.alert-success {
    background: var(--success-bg);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #a7f3d0;
}
[data-theme="light"] .alert-success {
    color: #065f46;
}

/* Result Section */
.result-header {
    text-align: center;
    margin-bottom: 2rem;
}

.badge {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

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

.student-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
    background: rgba(0, 0, 0, 0.15);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--card-border);
}

.info-item h5 {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.info-item p {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Tables for scores */
.table-container {
    overflow-x: auto;
    margin-bottom: 2rem;
    border: 1px solid var(--card-border);
    border-radius: 12px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table th, .table td {
    padding: 1rem;
    border-bottom: 1px solid var(--card-border);
}

.table th {
    background: rgba(0, 0, 0, 0.2);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* Admin Dashboard Elements */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: transform 0.2s ease;
}
.stat-card:hover {
    transform: translateY(-3px);
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--accent);
    opacity: 0.8;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.page-link:hover, .page-link.active {
    color: #ffffff;
    background: var(--accent);
    border-color: var(--accent);
}

/* Floating Action / Header Actions */
.header-action {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-action h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

.action-buttons {
    display: flex;
    gap: 0.75rem;
}

/* Footer styling */
.footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--card-border);
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: auto;
}

/* Score grid for edit/add student */
.score-entry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    background: rgba(0, 0, 0, 0.1);
    padding: 1.25rem;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    margin-bottom: 1.5rem;
}
.score-entry-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: 1.5rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
}
.modal-close:hover {
    color: var(--text-primary);
}

.modal-header {
    margin-bottom: 1.5rem;
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
}