@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Font family */
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Default Light Theme Variables */
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    
    --primary-color: #0f4c81; /* Premium Navy Blue */
    --primary-hover: #0a365c;
    --accent-color: #0ea5e9;  /* Electric Sky Blue */
    --accent-hover: #0284c7;
    
    --success: #10b981;       /* Emerald */
    --success-bg: #ecfdf5;
    --success-text: #047857;
    
    --warning: #f59e0b;       /* Amber */
    --warning-bg: #fffbeb;
    --warning-text: #b45309;
    
    --danger: #ef4444;        /* Rose */
    --danger-bg: #fef2f2;
    --danger-text: #b91c1c;

    --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
    --hover-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --gradient-hero: linear-gradient(135deg, #0f4c81 0%, #1e40af 50%, #0369a1 100%);
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-blur: blur(12px);
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --bg-primary: #0b0f19;
    --bg-secondary: #111827;
    --bg-card: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-muted: #6b7280;
    --border-color: #374151;
    
    --primary-color: #3b82f6; /* Modern Blue */
    --primary-hover: #2563eb;
    --accent-color: #38bdf8;
    --accent-hover: #0ea5e9;
    
    --success-bg: rgba(16, 185, 129, 0.1);
    --success-text: #34d399;
    
    --warning-bg: rgba(245, 158, 11, 0.1);
    --warning-text: #fbbf24;
    
    --danger-bg: rgba(239, 68, 68, 0.1);
    --danger-text: #f87171;
    
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --gradient-hero: linear-gradient(135deg, #111827 0%, #1e293b 50%, #0f172a 100%);
    --glass-bg: rgba(31, 41, 55, 0.8);
    --glass-border: rgba(255, 255, 255, 0.05);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 0;
    margin: 0;
    transition: var(--transition);
    overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 5px;
    border: 2px solid var(--bg-secondary);
}

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

/* Base Layout & Containers */
.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header & Navigation Styles */
header {
    background: var(--gradient-hero);
    color: white;
    padding: 24px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 25px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px -10px rgba(15, 76, 129, 0.3);
}

header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 60%);
    transform: rotate(30deg);
    pointer-events: none;
}

.header-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.header-logo {
    max-height: 105px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
    margin-bottom: 4px;
}

.header-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

header h1 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-top: 8px;
    margin-bottom: 0;
    letter-spacing: -0.2px;
    opacity: 0.95;
}

header p.sub {
    font-size: 0.95rem;
    opacity: 0.85;
    font-weight: 400;
    margin-bottom: 0;
}

header p.location {
    font-size: 1.7rem;
    opacity: 1;
    font-weight: 800;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
    line-height: 1.25;
}

.theme-switch-container {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 10;
}

.theme-toggle-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: var(--glass-blur);
    transition: var(--transition);
}

.theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

/* Exam Selector & Dashboard Bar */
.control-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 35px;
}

.control-bar > * {
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .control-bar {
        flex-direction: column;
        align-items: stretch;
    }
    .control-bar > * {
        width: 100%;
    }
}


.exam-select-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    padding: 10px 18px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
}

.exam-select-box label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.exam-select-box select {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 8px;
    background-color: var(--bg-secondary);
    cursor: pointer;
    outline: none;
    transition: var(--transition);
}

.exam-select-box select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.15);
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    background: var(--bg-card);
    padding: 6px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    overflow-x: auto;
    white-space: nowrap;
}

.tab-btn {
    font-family: var(--font-sans);
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 10px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

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

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

/* Main Dashboard Cards */
.dashboard-view {
    display: none;
    animation: fadeIn 0.4s ease;
}

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

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

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--card-shadow);
    margin-bottom: 30px;
    transition: var(--transition);
}

.card-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 12px;
}

/* Form Styles */
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 25px;
}

@media (min-width: 768px) {
    .form-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .form-grid.two-cols {
        grid-template-columns: repeat(2, 1fr);
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

.form-control {
    font-family: var(--font-sans);
    font-size: 1rem;
    padding: 12px 16px;
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.15);
    background-color: var(--bg-card);
}

.btn-primary {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 700;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 10px;
    padding: 12px 24px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 6px -1px rgba(15, 76, 129, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(15, 76, 129, 0.3);
}

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

/* Prediction Results Cards */
.results-header {
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.predictor-results-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 768px) {
    .predictor-results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.prediction-card {
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    position: relative;
    transition: var(--transition);
}

.prediction-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--hover-shadow);
    border-color: var(--accent-color);
}

.prediction-card.high-chance {
    border-left: 6px solid var(--success);
}

.prediction-card.medium-chance {
    border-left: 6px solid var(--warning);
}

.prediction-card.borderline-chance {
    border-left: 6px solid var(--danger);
}

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

.branch-code {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary-color);
}

.branch-name {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.chance-badge {
    padding: 4px 10px;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.high-chance .chance-badge {
    background-color: var(--success-bg);
    color: var(--success-text);
}

.medium-chance .chance-badge {
    background-color: var(--warning-bg);
    color: var(--warning-text);
}

.borderline-chance .chance-badge {
    background-color: var(--danger-bg);
    color: var(--danger-text);
}

.rank-stat-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    border-top: 1px dashed var(--border-color);
    padding-top: 12px;
}

.rank-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.rank-stat .label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
}

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

/* Lookup Stat Display */
.lookup-visual-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    margin-top: 20px;
    animation: fadeIn 0.4s ease;
}

.lookup-stats-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 25px;
}

@media (min-width: 768px) {
    .lookup-stats-row {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 18px;
    text-align: center;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
}

.stat-box .num {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-color);
}

.stat-box .desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    margin-top: 5px;
}

/* Range bar visualizer */
.range-bar-container {
    margin-top: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
}

.range-bar-title {
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
    text-transform: uppercase;
}

.range-track {
    height: 12px;
    background-color: var(--bg-secondary);
    border-radius: 6px;
    position: relative;
    margin: 30px 0;
}

.range-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 6px;
    position: absolute;
}

.range-marker {
    position: absolute;
    top: -8px;
    transform: translateX(-50%);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--bg-card);
    border: 4px solid var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.15);
    z-index: 2;
}

.range-marker.last {
    border-color: var(--accent-color);
}

.range-marker.your-rank {
    border-color: var(--success);
    background-color: var(--success);
    color: white;
    width: 32px;
    height: 32px;
    top: -10px;
}

.marker-label {
    position: absolute;
    bottom: -22px;
    font-size: 0.75rem;
    font-weight: 700;
    white-space: nowrap;
    color: var(--text-secondary);
}

.marker-label.top-label {
    bottom: auto;
    top: -24px;
    background: var(--primary-color);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
}

.marker-label.top-label.last {
    background: var(--accent-color);
}

.marker-label.top-label.your-rank {
    background: var(--success);
}

/* Full Cutoff Table Styles */
.table-filter-bar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

@media (min-width: 768px) {
    .table-filter-bar {
        grid-template-columns: 2fr 1.2fr 1.2fr auto;
    }
}

.table-wrapper {
    width: 100%;
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

table.ranks-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 100%;
    text-align: center;
    font-size: 0.76rem;
}

table.ranks-table th,
table.ranks-table td {
    padding: 8px 3px;
    border: 1px solid var(--border-color);
}

table.ranks-table th {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    font-weight: 700;
    position: sticky;
    top: 0;
    z-index: 5;
    font-size: 0.85rem;
}

table.ranks-table tr.program-title-row {
    background-color: rgba(15, 76, 129, 0.05);
    font-weight: 700;
    text-align: left;
}

table.ranks-table tr.program-title-row td {
    text-align: left;
    color: var(--primary-color);
    padding: 10px 15px;
    font-size: 1rem;
    font-weight: 800;
    background-color: var(--bg-secondary);
}

table.ranks-table tbody tr {
    transition: var(--transition);
}

table.ranks-table tbody tr:hover {
    background-color: rgba(15, 76, 129, 0.02);
}

/* Hover highlights on ranks cells */
table.ranks-table td.rank-cell {
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
}

table.ranks-table td.rank-cell:hover {
    background-color: rgba(14, 165, 233, 0.15) !important;
    color: var(--accent-hover);
    transform: scale(1.05);
    z-index: 10;
    position: relative;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

table.ranks-table td.empty-rank {
    color: var(--text-muted);
    font-weight: 400;
    background-color: rgba(0,0,0,0.01);
}

/* Hide columns check boxes */
.columns-toggle-dropdown {
    position: relative;
    display: inline-block;
}

.columns-toggle-btn {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 16px;
    cursor: pointer;
    font-family: var(--font-sans);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.columns-toggle-btn:hover {
    background-color: var(--border-color);
}

.columns-list {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 5px);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 15px;
    box-shadow: var(--hover-shadow);
    z-index: 100;
    width: 220px;
}

.columns-list.show {
    display: block;
}

.column-checkbox-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.column-checkbox-item input {
    cursor: pointer;
    width: 16px;
    height: 16px;
}

/* Excel file upload styles */
.upload-zone {
    border: 2.5px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 50px 30px;
    text-align: center;
    background-color: var(--bg-secondary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--primary-color);
    background-color: rgba(15, 76, 129, 0.02);
}

.upload-zone svg {
    width: 50px;
    height: 50px;
    fill: var(--text-muted);
    transition: var(--transition);
}

.upload-zone:hover svg {
    fill: var(--primary-color);
    transform: translateY(-5px);
}

.upload-zone-title {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-primary);
}

.upload-zone-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Status logs / messages */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-top: 15px;
}

.status-badge.loading {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
}

.status-badge.success {
    background-color: var(--success-bg);
    color: var(--success-text);
}

.status-badge.error {
    background-color: var(--danger-bg);
    color: var(--danger-text);
}

.pulsate {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

.log-box {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 15px;
    font-family: monospace;
    font-size: 0.8rem;
    max-height: 150px;
    overflow-y: auto;
    margin-top: 15px;
    text-align: left;
    white-space: pre-wrap;
    color: var(--text-secondary);
}

/* PDF print utility */
.actions-bar {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-top: 20px;
}

.btn-secondary {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 700;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 20px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

/* PDF Print styling override */
@media print {
    body {
        background: white;
        color: black;
        padding: 0;
    }
    header, .control-bar, .nav-tabs, .form-card, .table-filter-bar, .actions-bar, .theme-switch-container {
        display: none !important;
    }
    .card {
        border: none;
        box-shadow: none;
        padding: 0;
    }
    table.ranks-table {
        min-width: 100%;
    }
    table.ranks-table th {
        background-color: #f1f5f9 !important;
        color: black !important;
    }
}

/* Blinking/attention pulse for Predictor and Lookup tabs */
#btn-tab-predictor:not(.active),
#btn-tab-lookup:not(.active) {
    animation: tab-pulse 1.8s infinite ease-in-out;
    border: 1.5px solid rgba(14, 165, 233, 0.4) !important;
    transition: transform 0.2s ease;
}

#btn-tab-lookup:not(.active) {
    animation-delay: 0.9s; /* Offset pulse animations */
}

@keyframes tab-pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(14, 165, 233, 0.2);
        border-color: rgba(14, 165, 233, 0.4) !important;
        transform: scale(1);
        background-color: transparent;
    }
    50% {
        box-shadow: 0 0 12px 4px rgba(14, 165, 233, 0.6);
        border-color: rgba(14, 165, 233, 1) !important;
        transform: scale(1.04); /* Flashy pop effect */
        background-color: rgba(14, 165, 233, 0.08);
    }
}