/* ============================================
   The Bib — Marketing site
   Sibling to Course Caddy: same DNA, green identity
   ============================================ */

:root {
    /* The Bib green palette — keyed off the app's primary-500/600/700 */
    --color-fairway: #15803d;     /* primary-700, darkest */
    --color-fairway-dark: #14532d;
    --color-green: #16a34a;       /* primary-600 */
    --color-green-light: #22c55e; /* primary-500 */
    --color-mint: #86efac;
    --color-cream: #f8f6f0;
    --color-sand: #e8e4d9;
    --color-charcoal: #1c1c1f;
    --color-slate: #4a4a4a;
    --color-gray: #6b6b6b;
    --color-light-gray: #9a9a9a;
    --color-white: #ffffff;
    --color-amber: #c9a227;

    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;

    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 4rem;

    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.16);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-charcoal);
    background-color: var(--color-cream);
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: var(--space-sm) 0;
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-fairway);
}

.nav-logo-mark {
    width: 32px; height: 32px;
    border-radius: 8px;
    background: var(--color-green);
    color: var(--color-white);
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-slate);
}

.nav-links a:hover { color: var(--color-fairway); }

/* Hero */
.hero {
    padding: var(--space-xxl) 0 var(--space-xl);
    text-align: center;
    background:
        linear-gradient(180deg, rgba(20, 83, 45, 0.0) 0%, rgba(20, 83, 45, 0.85) 100%),
        radial-gradient(circle at 30% 20%, var(--color-green-light) 0%, transparent 60%),
        var(--color-fairway-dark);
    color: var(--color-white);
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-md);
    color: var(--color-white);
}

.hero p.tagline {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    max-width: 700px;
    margin: 0 auto var(--space-lg);
    color: rgba(255, 255, 255, 0.9);
}

.hero .ctas {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    cursor: pointer;
    border: none;
}

.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

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

.btn-primary:hover { background: var(--color-fairway); }

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn-secondary:hover { border-color: var(--color-white); }

/* Sections */
section {
    padding: var(--space-xxl) 0;
}

h2 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 600;
    color: var(--color-fairway);
    margin-bottom: var(--space-lg);
    text-align: center;
}

h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-charcoal);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
}

h4 {
    font-family: var(--font-body);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-charcoal);
    margin-top: var(--space-md);
    margin-bottom: var(--space-xs);
}

p { margin-bottom: var(--space-sm); }

/* Feature grid */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.feature {
    background: var(--color-white);
    padding: var(--space-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.feature-icon {
    width: 48px; height: 48px;
    border-radius: 10px;
    background: rgba(22, 163, 74, 0.1);
    color: var(--color-green);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem;
    margin-bottom: var(--space-sm);
}

.feature h3 {
    font-size: 1.2rem;
    margin-top: 0;
    margin-bottom: var(--space-xs);
    color: var(--color-fairway);
}

.feature p {
    color: var(--color-gray);
    font-size: 0.95rem;
}

/* How it works */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.step {
    text-align: center;
}

.step-num {
    width: 56px; height: 56px;
    border-radius: 50%;
    background: var(--color-green);
    color: var(--color-white);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto var(--space-sm);
}

/* Legal / long-text pages */
.legal-content ul,
.legal-content ol {
    margin-left: 2rem;
    margin-bottom: var(--space-md);
}

.legal-content li {
    margin-bottom: var(--space-xs);
    color: var(--color-slate);
}

.legal-content p {
    color: var(--color-slate);
}

.legal-content strong { color: var(--color-charcoal); }

.legal-header {
    background: var(--color-fairway);
    color: var(--color-white);
    padding: var(--space-xl) 0;
    text-align: center;
}

.legal-header h1 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
}

.legal-header .tagline {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.1rem;
    margin-top: var(--space-xs);
}

.legal-body {
    background: var(--color-white);
    padding: var(--space-xl) var(--space-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    margin: var(--space-xl) auto;
    max-width: 800px;
}

/* Footer */
footer {
    background: var(--color-fairway-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--space-xl) 0 var(--space-lg);
    text-align: center;
    font-size: 0.9rem;
}

footer a {
    color: rgba(255, 255, 255, 0.9);
    margin: 0 var(--space-sm);
}

footer a:hover { color: var(--color-white); }

.footer-divider {
    margin: var(--space-md) auto;
    width: 60px;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
}

/* Responsive */
@media (max-width: 720px) {
    .nav-links { display: none; }
    .hero { padding: var(--space-xl) 0 var(--space-lg); }
    section { padding: var(--space-xl) 0; }
}