/* ==========================================================================
   Verenga Africa — Unified Design System
   Matches the homepage (index.php) and For Schools (schools.php):
   black nav / hero / footer  +  white & soft-grey content sections
   hairline borders, sharp 2px corners, tight Inter typography, teal accent
   ========================================================================== */

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

:root {
    /* Core */
    --black: #000;
    --white: #fff;
    --ink: #111;
    --muted: #666;
    --soft: #f7f7f5;
    --soft-2: #fafafa;
    --line: #e7e7e4;
    --line-strong: #d4d4d0;
    --accent: #008b74;
    --accent-hover: #006f5c;
    --accent-50: rgba(0, 139, 116, 0.08);

    /* Status */
    --success: #0f9d6b;
    --success-50: rgba(15, 157, 107, 0.09);
    --warning: #c27803;
    --warning-50: rgba(194, 120, 3, 0.1);
    --danger: #d92d20;
    --danger-50: rgba(217, 45, 32, 0.08);
    --info: #1d4ed8;
    --info-50: rgba(29, 78, 216, 0.08);

    /* Legacy aliases (older pages reference these) */
    --primary: #000;
    --primary-hover: #222;
    --primary-light: var(--soft);
    --primary-50: var(--soft);
    --primary-100: var(--line);
    --gray-50: var(--soft-2);
    --gray-100: var(--soft);
    --gray-200: var(--line);
    --gray-300: var(--line-strong);
    --gray-400: #a3a3a0;
    --gray-500: #737370;
    --gray-600: #555552;
    --gray-700: #3d3d3a;
    --gray-800: #222;
    --gray-900: #111;
    --clay-50: var(--soft-2);
    --clay-100: var(--soft);
    --clay-200: var(--line);
    --clay-300: var(--line-strong);
    --clay-400: #a3a3a0;
    --clay-500: #737370;
    --clay-600: #555552;
    --clay-700: #3d3d3a;
    --clay-800: #222;
    --clay-900: #111;
    --success-100: var(--success-50);
    --success-200: rgba(15, 157, 107, 0.25);
    --danger-100: var(--danger-50);
    --danger-200: rgba(217, 45, 32, 0.25);
    --border-subtle: var(--line);

    /* Dark surfaces */
    --dark-bg: #000;
    --dark-surface: #0a0a0a;
    --dark-surface-elevated: #141414;
    --dark-border: rgba(255, 255, 255, 0.08);
    --dark-border-hover: rgba(255, 255, 255, 0.16);
    --dark-text-secondary: rgba(255, 255, 255, 0.65);
    --dark-text-tertiary: rgba(255, 255, 255, 0.42);

    /* Shape */
    --radius: 2px;
    --radius-sm: 2px;
    --radius-md: 2px;
    --radius-lg: 4px;
    --radius-xl: 4px;
    --radius-2xl: 6px;
    --radius-full: 9999px;
    --shadow-sm: none;
    --shadow-md: 0 1px 0 rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 18px 44px rgba(0, 0, 0, 0.14);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--ink);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main { min-height: 60vh; background: var(--white); }

img { max-width: 100%; }

.reading-font { font-family: 'Crimson Pro', Georgia, serif; font-size: 1.125rem; line-height: 1.8; }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
    color: var(--black);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
}
h1 { font-size: clamp(2.25rem, 4vw, 3.25rem); letter-spacing: -0.045em; }
h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); }
h3 { font-size: 1.375rem; letter-spacing: -0.02em; }
h4 { font-size: 1.125rem; letter-spacing: -0.015em; }
h5 { font-size: 1rem; letter-spacing: -0.01em; }
h6 { font-size: 0.9375rem; letter-spacing: -0.01em; }

a { color: inherit; text-decoration: none; transition: color .2s, opacity .2s; }
a:hover { opacity: .8; }
p a:hover, .text-muted a:hover { text-decoration: underline; opacity: 1; }

.eyebrow {
    display: block;
    color: var(--muted);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .15em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

/* ---------- Layout ---------- */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}
.container-narrow { max-width: 820px; }
.container-wide { max-width: 1600px; }

.section { padding: 5rem 0; background: var(--white); }
.section-alt { padding: 5rem 0; background: var(--soft-2); }
.section-dark { padding: 5rem 0; background: var(--black); color: #fff; }
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }
.section-dark p { color: rgba(255,255,255,.62); }
.section-title { font-size: clamp(1.75rem, 3vw, 2.5rem); margin-bottom: .75rem; }
.section-subtitle { color: var(--muted); font-size: 1.0625rem; max-width: 640px; }

/* ---------- Black page hero (inner pages) ---------- */
.page-hero {
    background: var(--black);
    color: #fff;
    padding: 72px 0 56px;
    position: relative;
    overflow: hidden;
}
.page-hero::after {
    content: "";
    position: absolute;
    width: 420px; height: 420px;
    right: -170px; top: -60px;
    border: 1px solid rgba(255, 255, 255, .07);
    border-radius: 50%;
    pointer-events: none;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero .eyebrow { color: rgba(255, 255, 255, .42); }
.page-hero h1 {
    color: #fff;
    font-size: clamp(2.5rem, 5vw, 4.25rem);
    line-height: 1;
    letter-spacing: -0.05em;
    margin: 0 0 16px;
    max-width: 880px;
}
.page-hero h1 span { color: var(--accent); }
.page-hero p { color: rgba(255, 255, 255, .62); font-size: 1.0625rem; line-height: 1.7; max-width: 640px; margin: 0; }
.page-hero .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 28px; }
.page-hero .btn-secondary, .page-hero .btn-outline { color: #fff; border-color: rgba(255,255,255,.22); }

/* Legacy hero blocks → same look */
.hero { background: var(--black); color: #fff; padding: 72px 0 56px; text-align: left; position: relative; overflow: hidden; }
.hero::before { display: none; }
.hero-title { font-size: clamp(2.5rem, 5vw, 4.25rem); font-weight: 600; letter-spacing: -0.05em; line-height: 1; color: #fff; margin-bottom: 16px; }
.hero-subtitle { font-size: 1.0625rem; color: rgba(255,255,255,.62); margin-bottom: 24px; line-height: 1.7; max-width: 640px; }

/* Dark wrapper (auth pages etc.) */
.page-wrapper { background: var(--black); color: #fff; min-height: calc(100vh - 68px); }
.page-wrapper h1, .page-wrapper h2, .page-wrapper h3, .page-wrapper h4, .page-wrapper h5, .page-wrapper h6 { color: #fff; }
.page-wrapper p, .page-wrapper .text-muted { color: rgba(255,255,255,.6); }
.page-wrapper a { color: #fff; }

/* Page body below a hero */
.page-body { padding: 3rem 0 5rem; background: var(--soft-2); }

/* ---------- Navigation ---------- */
.navbar {
    background: #000;
    border-bottom: 1px solid rgba(255, 255, 255, .06);
    position: sticky; top: 0; z-index: 50;
}
.navbar-content { display: flex; align-items: center; justify-content: space-between; padding: 1rem 0; }
.navbar-brand { display: flex; align-items: center; gap: .5rem; font-size: 1.125rem; font-weight: 600; color: #fff; letter-spacing: -.02em; }
.navbar-brand:hover { opacity: .7; color: #fff; }
.navbar-menu { display: flex; align-items: center; gap: 2rem; }
.navbar-link { color: rgba(255,255,255,.7); font-weight: 500; font-size: .875rem; letter-spacing: -.01em; }
.navbar-link:hover, .navbar-link.active { color: #fff; }

.user-menu { position: relative; }
.dropdown-menu {
    position: absolute; top: calc(100% + .5rem); right: 0;
    min-width: 200px;
    background: rgba(0,0,0,.97);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0,0,0,.4);
    backdrop-filter: blur(20px);
    z-index: 1100;
    overflow: hidden;
}
.dropdown-menu a {
    display: flex; align-items: center; justify-content: space-between;
    padding: .75rem 1rem;
    color: rgba(255,255,255,.8);
    font-size: .875rem; font-weight: 500;
    border-bottom: 1px solid rgba(255,255,255,.05);
}
.dropdown-menu a:last-child { border-bottom: none; }
.dropdown-menu a:hover { background: rgba(255,255,255,.06); color: #fff; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
    padding: .75rem 1.5rem;
    font-family: inherit; font-size: .875rem; font-weight: 600; letter-spacing: -.005em; line-height: 1.2;
    border: 1px solid transparent;
    border-radius: var(--radius);
    cursor: pointer; text-decoration: none; white-space: nowrap;
    transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease, opacity .2s ease;
}
.btn:disabled, .btn[disabled] { opacity: .5; cursor: not-allowed; }
.btn:active { transform: translateY(0); }

.btn-primary { background: #000; color: #fff; border-color: #000; }
.btn-primary:hover { background: #222; color: #fff; transform: translateX(3px); }

.btn-secondary { background: #fff; color: #000; border-color: var(--line-strong); }
.btn-secondary:hover { border-color: #000; color: #000; }

.btn-outline, .btn-ghost { background: transparent; color: #000; border-color: var(--line-strong); }
.btn-outline:hover, .btn-ghost:hover { border-color: #000; background: var(--soft); color: #000; }

.btn-accent { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-hover); color: #fff; }

.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { opacity: .9; color: #fff; }

.btn-sm { padding: .5rem 1rem; font-size: .8125rem; }
.btn-lg { padding: 1rem 1.75rem; font-size: .9375rem; }

/* Buttons on dark surfaces */
.page-hero .btn-primary, .page-wrapper .btn-primary, .section-dark .btn-primary, .hero .btn-primary, .on-dark .btn-primary {
    background: #fff; color: #000; border-color: #fff;
}
.page-hero .btn-primary:hover, .page-wrapper .btn-primary:hover, .section-dark .btn-primary:hover, .hero .btn-primary:hover, .on-dark .btn-primary:hover { background: rgba(255,255,255,.9); color: #000; }
.page-hero .btn-secondary, .page-wrapper .btn-secondary, .section-dark .btn-secondary, .hero .btn-secondary, .on-dark .btn-secondary,
.page-hero .btn-outline, .page-wrapper .btn-outline, .section-dark .btn-outline, .hero .btn-outline, .on-dark .btn-outline {
    background: transparent; color: #fff; border-color: rgba(255,255,255,.25);
}
.page-hero .btn-secondary:hover, .page-wrapper .btn-secondary:hover, .section-dark .btn-secondary:hover, .hero .btn-secondary:hover, .on-dark .btn-secondary:hover,
.page-hero .btn-outline:hover, .page-wrapper .btn-outline:hover, .section-dark .btn-outline:hover, .hero .btn-outline:hover, .on-dark .btn-outline:hover {
    border-color: #fff; background: rgba(255,255,255,.06); color: #fff;
}

.text-link { color: #000; font-size: .875rem; font-weight: 500; border-bottom: 1px solid rgba(0,0,0,.3); padding-bottom: 2px; }
.text-link:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Forms ---------- */
.form-group { margin-bottom: 1.25rem; }
.form-label {
    display: block; margin-bottom: .5rem;
    font-size: .8125rem; font-weight: 600; color: var(--ink);
    letter-spacing: -.005em;
}
.form-input, .form-select, .form-textarea, .form-control {
    width: 100%;
    padding: .75rem 1rem;
    font-family: inherit; font-size: .9375rem; color: var(--ink);
    background: #fff;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    transition: border-color .2s, box-shadow .2s;
}
.form-input::placeholder, .form-textarea::placeholder, .form-control::placeholder { color: #a3a3a0; }
.form-input:focus, .form-select:focus, .form-textarea:focus, .form-control:focus {
    outline: none; border-color: #000; box-shadow: 0 0 0 3px rgba(0,0,0,.06);
}
.form-textarea { resize: vertical; min-height: 120px; line-height: 1.6; }
.form-error { color: var(--danger); font-size: .8125rem; margin-top: .375rem; }
.form-help { color: var(--muted); font-size: .8125rem; margin-top: .375rem; }
input[type="checkbox"], input[type="radio"] { accent-color: #000; }

/* Forms on dark surfaces */
.page-wrapper .form-label { color: rgba(255,255,255,.75); }
.page-wrapper .form-input, .page-wrapper .form-select, .page-wrapper .form-textarea, .page-wrapper .form-control {
    background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.12); color: #fff;
}
.page-wrapper .form-input::placeholder { color: rgba(255,255,255,.35); }
.page-wrapper .form-input:focus, .page-wrapper .form-select:focus, .page-wrapper .form-textarea:focus {
    border-color: rgba(255,255,255,.4); background: rgba(255,255,255,.08); box-shadow: none;
}
.page-wrapper .form-select option { color: #000; }
.page-wrapper input[type="checkbox"], .page-wrapper input[type="radio"] { accent-color: #fff; }

/* ---------- Cards ---------- */
.card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: border-color .2s, transform .2s, box-shadow .2s;
}
.card:hover { border-color: var(--line-strong); }
a.card:hover, .card.card-link:hover { border-color: #000; transform: translateY(-2px); }
.card-header { margin-bottom: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.card-title { font-size: 1.125rem; font-weight: 600; color: var(--black); letter-spacing: -.02em; }
.page-wrapper .card { background: rgba(255,255,255,.03); border-color: rgba(255,255,255,.1); }
.page-wrapper .card:hover { border-color: rgba(255,255,255,.2); }

/* Hairline grid of cells (homepage pattern) */
.cell-grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.cell-grid > * { background: #fff; padding: 2rem; }

.book-card { cursor: pointer; border: none; padding: 0; background: transparent; transition: transform .25s ease; }
.book-card:hover { transform: translateY(-6px); }
.book-cover {
    width: 100%; aspect-ratio: 2/3; object-fit: cover;
    border-radius: var(--radius);
    background: var(--soft);
    border: 1px solid var(--line);
    transition: box-shadow .25s ease;
}
.book-card:hover .book-cover { box-shadow: var(--shadow-xl); }

/* ---------- Grid ---------- */
.grid { display: grid; gap: 1.5rem; }
.grid-cols-1 { grid-template-columns: 1fr; }
.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); }
.grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
.grid-cols-6 { grid-template-columns: repeat(6, 1fr); }

/* ---------- Badges ---------- */
.badge {
    display: inline-flex; align-items: center; justify-content: center;
    padding: .25rem .625rem;
    font-size: .6875rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
    border-radius: var(--radius);
    background: #000; color: #fff;
}
.badge-primary { background: #000; color: #fff; }
.badge-success { background: var(--success-50); color: var(--success); }
.badge-warning { background: var(--warning-50); color: var(--warning); }
.badge-danger  { background: var(--danger-50); color: var(--danger); }
.badge-info    { background: var(--info-50); color: var(--info); }
.badge-gray    { background: var(--soft); color: var(--gray-600); border: 1px solid var(--line); }
.dropdown-menu .badge { background: #fff; color: #000; border-radius: 12px; }
.dropdown-menu .badge-danger { background: var(--danger); color: #fff; }

/* ---------- Alerts ---------- */
.alert {
    display: flex; align-items: flex-start; gap: .75rem;
    padding: 1rem 1.25rem; margin-bottom: 1rem;
    border: 1px solid var(--line); border-left-width: 3px;
    border-radius: var(--radius);
    font-size: .9375rem; background: #fff; color: var(--ink);
}
.alert-success { background: var(--success-50); border-color: var(--success); color: #0b6b49; }
.alert-error, .alert-danger { background: var(--danger-50); border-color: var(--danger); color: #a32016; }
.alert-warning { background: var(--warning-50); border-color: var(--warning); color: #8a5402; }
.alert-info { background: var(--info-50); border-color: var(--info); color: #1a3fa6; }

/* ---------- Progress ---------- */
.progress { height: 6px; background: var(--line); border-radius: var(--radius-full); overflow: hidden; }
.progress-bar { height: 100%; background: var(--accent); border-radius: var(--radius-full); transition: width .5s ease; }

/* ---------- Stats ---------- */
.stat-card {
    text-align: left; padding: 1.75rem 1.5rem;
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    transition: border-color .2s;
}
.stat-card:hover { border-color: #000; }
.stat-value { font-size: 2.5rem; font-weight: 600; color: var(--black); letter-spacing: -.04em; line-height: 1; }
.stat-label { color: var(--muted); font-size: .6875rem; font-weight: 600; text-transform: uppercase; letter-spacing: .12em; margin-top: .75rem; }
.stat-item { text-align: left; }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; font-size: .9375rem; }
th {
    text-align: left; padding: .75rem 1rem;
    font-size: .6875rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
    color: var(--muted); border-bottom: 1px solid var(--line-strong); background: transparent;
}
td { padding: 1rem; border-bottom: 1px solid var(--line); color: var(--ink); vertical-align: middle; }
tbody tr:hover td { background: var(--soft-2); }

/* ---------- Lists / features ---------- */
.feature-item { display: flex; gap: .875rem; align-items: flex-start; padding: .75rem 0; }
.feature-check { color: var(--accent); flex-shrink: 0; }
.checklist-item { display: flex; gap: .75rem; align-items: flex-start; margin-bottom: .75rem; }
.checklist-icon { color: var(--accent); }

.pagination-btn {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 40px; height: 40px; padding: 0 .75rem;
    border: 1px solid var(--line-strong); border-radius: var(--radius);
    background: #fff; color: #000; font-size: .875rem; font-weight: 500;
}
.pagination-btn:hover { border-color: #000; color: #000; }
.pagination-btn.active { background: #000; color: #fff; border-color: #000; }

.search-result { padding: 1.25rem 0; border-bottom: 1px solid var(--line); }
.result-title { font-size: 1.125rem; font-weight: 600; letter-spacing: -.02em; }
.result-tag {
    display: inline-block; padding: .2rem .55rem; margin-right: .35rem;
    font-size: .6875rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
    background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius); color: var(--gray-600);
}
.radio-option-inline { display: inline-flex; align-items: center; gap: .5rem; cursor: pointer; }

/* ---------- Empty / loading / divider ---------- */
.empty-state { padding: 4rem 2rem; text-align: center; }
.empty-state i { font-size: 2.5rem; color: var(--line-strong); margin-bottom: 1.25rem; }
.empty-state h3 { font-size: 1.375rem; margin-bottom: .5rem; }
.empty-state p { margin-bottom: 1.5rem; }
.divider { height: 1px; background: var(--line); border: none; margin: 2rem 0; }
.loading { display: inline-block; width: 20px; height: 20px; border: 2px solid var(--line); border-top-color: #000; border-radius: 50%; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Reading mode ---------- */
.reading-container { max-width: 720px; margin: 0 auto; padding: 3rem 2rem; }
.reading-controls {
    position: fixed; bottom: 2rem; right: 2rem; display: flex; gap: .5rem;
    background: #fff; padding: .75rem; border: 1px solid var(--line); border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
}

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--muted); }
.text-small { font-size: .875rem; }
.text-large { font-size: 1.125rem; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-accent { color: var(--accent); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }

.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; } .mb-4 { margin-bottom: 2rem; }
.ml-2 { margin-left: 1rem; } .mr-2 { margin-right: 1rem; }
.my-2 { margin-top: 1rem; margin-bottom: 1rem; } .my-4 { margin-top: 2rem; margin-bottom: 2rem; }
.p-2 { padding: 1rem; } .p-3 { padding: 1.5rem; } .p-4 { padding: 2rem; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: .5rem; } .gap-2 { gap: 1rem; } .gap-3 { gap: 1.5rem; } .gap-4 { gap: 2rem; }
.hidden { display: none; }
.block { display: block; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .grid-cols-6 { grid-template-columns: repeat(4, 1fr); }
    .grid-cols-5 { grid-template-columns: repeat(3, 1fr); }
    .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .grid-cols-6, .grid-cols-5, .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
    .page-hero, .hero { padding: 48px 0 40px; }
    .section, .section-alt, .section-dark { padding: 3.5rem 0; }
    .navbar-menu { gap: 1rem; }
    table { display: block; overflow-x: auto; }
}
@media (max-width: 560px) {
    .grid-cols-6, .grid-cols-5, .grid-cols-4, .grid-cols-3, .grid-cols-2 { grid-template-columns: 1fr; }
    .reading-controls { right: 1rem; bottom: 1rem; }
}
@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}