/* ============================================================
   Campus Atlas Guide - Independent Informational Portal
   ============================================================ */

:root {
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-text: #1e293b;
    --color-muted: #64748b;
    --color-primary: #1e3a5f;
    --color-primary-light: #2d5a8a;
    --color-accent: #c9a227;
    --color-border: #e2e8f0;
    --color-alt-bg: #f1f5f9;
    --radius: 12px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
    --shadow-md: 0 8px 24px rgba(0,0,0,.08);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--color-primary-light); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.logo {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}
.logo:hover { text-decoration: none; color: var(--color-primary-light); }

.main-nav { display: flex; gap: 28px; }
.main-nav a {
    font-size: .92rem;
    font-weight: 500;
    color: var(--color-muted);
}
.main-nav a:hover { color: var(--color-primary); text-decoration: none; }

/* Hero */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 48px;
    padding: 72px 24px 64px;
    max-width: 1180px;
    margin: 0 auto;
}

.hero-content { max-width: 560px; }

.hero-badge {
    display: inline-block;
    background: #eef4fb;
    color: var(--color-primary);
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: clamp(1.9rem, 4vw, 2.9rem);
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: var(--color-primary);
    margin-bottom: 18px;
}

.highlight {
    color: var(--color-primary-light);
    position: relative;
}

.hero-sub {
    font-size: 1.06rem;
    color: var(--color-muted);
    margin-bottom: 28px;
    line-height: 1.65;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
    display: inline-block;
    padding: 13px 26px;
    border-radius: 10px;
    font-weight: 600;
    font-size: .95rem;
    transition: all .2s ease;
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(30,58,95,.2);
}
.btn-primary:hover { background: var(--color-primary-light); text-decoration: none; transform: translateY(-1px); }

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-border);
}
.btn-outline:hover { border-color: var(--color-primary); background: #f8fafc; text-decoration: none; }

.hero-visual { display: flex; justify-content: center; }

.hero-image-wrapper {
    width: 100%;
    max-width: 480px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.hero-image-wrapper img { width: 100%; height: 340px; object-fit: cover; }

/* Sections */
.section { padding: 80px 0; }
.section-alt { background: var(--color-alt-bg); }

.section-header { max-width: 720px; margin-bottom: 44px; }
.section-label {
    display: inline-block;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 10px;
}

.section-header h2 {
    font-size: clamp(1.5rem, 3vw, 2.1rem);
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.section-sub {
    font-size: 1.02rem;
    color: var(--color-muted);
    line-height: 1.65;
}

/* Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 30px 26px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow .25s ease, transform .25s ease;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }

.card-icon { font-size: 1.8rem; margin-bottom: 14px; }

.card h3 {
    font-size: 1.08rem;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.card p { font-size: .95rem; color: var(--color-muted); }

/* Resource list */
.resource-list { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }

.resource-item {
    background: var(--color-surface);
    border-left: 4px solid var(--color-accent);
    border-radius: var(--radius);
    padding: 24px 26px;
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease;
}
.resource-item:hover { transform: translateX(4px); }

.resource-item h3 {
    font-size: 1.05rem;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.resource-item p { font-size: .95rem; color: var(--color-muted); }

/* Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.step-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px 22px;
    position: relative;
    transition: transform .25s ease, box-shadow .25s ease;
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.step-number {
    display: inline-block;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-accent);
    opacity: .55;
    margin-bottom: 10px;
}

.step-card h3 { font-size: 1rem; color: var(--color-primary); margin-bottom: 8px; }
.step-card p { font-size: .93rem; color: var(--color-muted); }

/* FAQ */
.faq-list { max-width: 860px; }

.faq-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-item summary {
    cursor: pointer;
    padding: 18px 22px;
    font-weight: 600;
    font-size: .98rem;
    color: var(--color-primary);
    list-style: none;
    position: relative;
    padding-right: 48px;
    transition: background .2s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    position: absolute;
    right: 22px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.3rem;
    color: var(--color-accent);
    transition: transform .2s ease;
}
.faq-item[open] summary::after { content: '−'; }
.faq-item summary:hover { background: #f8fafc; }

.faq-item p { padding: 0 22px 20px; font-size: .95rem; color: var(--color-muted); }

/* Disclaimer */
.disclaimer-section { padding: 60px 0 80px; }

.disclaimer-box {
    background: #fffbeb;
    border: 1px solid #fcd34d;
    border-radius: var(--radius);
    padding: 34px 32px;
    max-width: 960px;
    margin: 0 auto;
}
.disclaimer-box h2 {
    font-size: 1.15rem;
    color: #92400e;
    margin-bottom: 12px;
}
.disclaimer-box p { font-size: .94rem; color: #78350f; margin-bottom: 10px; }
.disclaimer-box p:last-child { margin-bottom: 0; }

/* Footer */
.site-footer {
    background: var(--color-primary);
    color: #cbd5e1;
    padding: 48px 0 36px;
    font-size: .9rem;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1.2fr;
    gap: 36px;
    align-items: start;
}

.footer-brand .logo { color: #fff; font-size: 1.05rem; }
.footer-brand p { margin-top: 8px; font-size: .88rem; line-height: 1.6; color: #94a3b8; }

.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: #cbd5e1; font-size: .9rem; }
.footer-links a:hover { color: #fff; }

.footer-contact p { font-size: .88rem; margin-bottom: 6px; }
.footer-contact a { color: #e2e8f0; }
.footer-contact a:hover { color: #fff; }
.footer-disclaimer { font-size: .8rem !important; color: #94a3b8; margin-top: 10px; }

/* Animations */
.fade-in, .slide-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible, .slide-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; gap: 32px; padding: 48px 24px; }
    .hero-visual { order: -1; }
    .hero-image-wrapper img { height: 260px; }
    .cards-grid { grid-template-columns: 1fr; }
    .resource-list { grid-template-columns: 1fr; }
    .steps-grid { grid-template-columns: 1fr 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 560px) {
    .steps-grid { grid-template-columns: 1fr; }
    .main-nav { gap: 16px; }
    .main-nav a { font-size: .85rem; }
    .section { padding: 56px 0; }
    .header-inner { height: 60px; }
}