/* ==============================================================================
   Bharat Diaries Exam Prep - Brand CSS Design System
   Color Scheme: Navy Blue (#0f2b5c), White (#ffffff), Saffron (#f58220)
   Typography: English & Hindi (Noto Sans Devanagari, Segoe UI, sans-serif)
   ============================================================================== */

:root {
    --primary: #0f2b5c;
    --primary-dark: #0a1c3d;
    --primary-light: #1b4385;
    --saffron: #f58220;
    --saffron-light: #fff3e6;
    --saffron-hover: #e06d0b;
    --success: #15803d;
    --success-bg: #dcfce7;
    --danger: #b91c1c;
    --danger-bg: #fee2e2;
    --warning: #b45309;
    --warning-bg: #fef3c7;
    --bg-page: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --border-focus: #3b82f6;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 8px;
    --font-stack: "Noto Sans Devanagari", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-stack);
    background-color: var(--bg-page);
    color: var(--text-main);
    line-height: 1.6;
    font-size: 16px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.15s ease-in-out;
}
a:hover {
    color: var(--saffron);
}

img {
    max-width: 100%;
    height: auto;
}

/* ------------------------------------------------------------------------------
   Typography & Hindi Text
   ------------------------------------------------------------------------------ */
h1, h2, h3, h4, h5, h6 {
    color: var(--primary);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.5rem;
}
.hindi-text {
    font-family: "Noto Sans Devanagari", sans-serif;
    line-height: 1.7;
}

/* ------------------------------------------------------------------------------
   Layout & Container
   ------------------------------------------------------------------------------ */
.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
}

.site-main {
    flex: 1;
    padding: 30px 0 60px;
}

/* ------------------------------------------------------------------------------
   Header & Navbar
   ------------------------------------------------------------------------------ */
.site-header {
    background: #ffffff;
    border-bottom: 3px solid var(--saffron);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}
.top-notice-bar {
    background: var(--primary-dark);
    color: #ffffff;
    font-size: 13px;
    padding: 6px 0;
    text-align: center;
}
.top-notice-bar a {
    color: #fbd38d;
    font-weight: 600;
    margin-left: 8px;
}
.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}
.brand-logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #ffffff;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
    border-left: 4px solid var(--saffron);
}
.brand-info h1 {
    font-size: 20px;
    margin: 0;
    color: var(--primary);
    letter-spacing: -0.3px;
}
.brand-info .tagline {
    font-size: 12px;
    color: var(--saffron);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    gap: 24px;
    list-style: none;
    align-items: center;
}
.nav-links a {
    color: var(--text-main);
    font-weight: 600;
    font-size: 15px;
    padding: 6px 2px;
    position: relative;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}
.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--saffron);
    border-radius: 2px;
}

.nav-toggle-btn {
    display: none;
    background: none;
    border: 1px solid var(--border);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 20px;
    cursor: pointer;
    color: var(--primary);
}

/* ------------------------------------------------------------------------------
   Buttons & Badges
   ------------------------------------------------------------------------------ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    font-size: 14px;
    padding: 10px 20px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}
.btn-primary {
    background-color: var(--primary);
    color: #ffffff !important;
}
.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-1px);
}
.btn-saffron {
    background-color: var(--saffron);
    color: #ffffff !important;
}
.btn-saffron:hover {
    background-color: var(--saffron-hover);
    transform: translateY(-1px);
}
.btn-outline {
    background-color: transparent;
    border-color: var(--border);
    color: var(--text-main) !important;
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary) !important;
    background-color: #f1f5f9;
}
.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}
.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}
.badge-primary { background: #dbeafe; color: #1e40af; }
.badge-saffron { background: var(--saffron-light); color: var(--saffron-hover); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }

/* ------------------------------------------------------------------------------
   Cards & Grids
   ------------------------------------------------------------------------------ */
.grid {
    display: grid;
    gap: 24px;
}
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.card-header {
    border-bottom: 1px solid var(--border);
    padding-bottom: 14px;
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.card-footer {
    border-top: 1px solid var(--border);
    padding-top: 14px;
    margin-top: 16px;
}

/* ------------------------------------------------------------------------------
   Forms & Inputs
   ------------------------------------------------------------------------------ */
.form-group {
    margin-bottom: 18px;
}
.form-label {
    display: block;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 6px;
    color: #334155;
}
.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 15px;
    font-family: inherit;
    background-color: #ffffff;
    transition: border-color 0.15s ease;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(15, 43, 92, 0.12);
}
textarea.form-control {
    resize: vertical;
    min-height: 100px;
}
.form-help {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ------------------------------------------------------------------------------
   Tables
   ------------------------------------------------------------------------------ */
.table-responsive {
    overflow-x: auto;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 14px;
}
.table th, .table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}
.table th {
    background-color: #f1f5f9;
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
}
.table tr:last-child td {
    border-bottom: none;
}
.table tr:hover td {
    background-color: #f8fafc;
}

/* ------------------------------------------------------------------------------
   Alerts & Notifications
   ------------------------------------------------------------------------------ */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 15px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.alert-success { background: var(--success-bg); color: var(--success); border-left: 4px solid var(--success); }
.alert-error { background: var(--danger-bg); color: var(--danger); border-left: 4px solid var(--danger); }
.alert-warning { background: var(--warning-bg); color: var(--warning); border-left: 4px solid var(--warning); }
.alert-info { background: #eff6ff; color: #1e40af; border-left: 4px solid #3b82f6; }

/* ------------------------------------------------------------------------------
   Mock Test Engine UI
   ------------------------------------------------------------------------------ */
.test-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    align-items: start;
}
.test-timer-box {
    background: var(--primary);
    color: #ffffff;
    padding: 16px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 16px;
    border-top: 4px solid var(--saffron);
}
.test-question-box {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}
.test-options-list {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.test-option-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.15s ease;
    background: #ffffff;
}
.test-option-label:hover {
    border-color: #94a3b8;
    background: #f8fafc;
}
.test-option-label.selected {
    border-color: var(--primary);
    background: #eff6ff;
}
.test-palette-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    margin-top: 14px;
}
.palette-btn {
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: #ffffff;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
}
.palette-btn.current { border: 2px solid var(--primary); font-weight: 800; }
.palette-btn.answered { background: var(--success); color: #ffffff; border-color: var(--success); }
.palette-btn.unanswered { background: #e2e8f0; color: #475569; }
.palette-btn.review { background: #7c3aed; color: #ffffff; border-color: #7c3aed; }

/* ------------------------------------------------------------------------------
   Footer
   ------------------------------------------------------------------------------ */
.site-footer {
    background: var(--primary);
    color: #cbd5e1;
    padding: 45px 0 20px;
    margin-top: auto;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 40px;
}
.footer-col h4 {
    color: #ffffff;
    font-size: 16px;
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 8px;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 2px;
    background: var(--saffron);
}
.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-links a {
    color: #cbd5e1;
    font-size: 14px;
}
.footer-links a:hover {
    color: #ffffff;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    font-size: 13px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

/* ------------------------------------------------------------------------------
   Mobile Responsiveness
   ------------------------------------------------------------------------------ */
@media (max-width: 900px) {
    .grid-cols-4, .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .test-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        border-bottom: 3px solid var(--saffron);
    }
    .nav-links.show { display: flex; }
    .nav-toggle-btn { display: block; }
    .grid-cols-2 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}