/*
 * CHARTED INTEREST - Main Stylesheet
 * Homepage and shared component styles
 */

@import url('variables.css');


/* ===========================================
   BACKGROUND TEXTURE
   =========================================== */

body {
    background-image: radial-gradient(var(--border-color) 1px, transparent 1px);
    background-size: 20px 20px;
}


/* ===========================================
   HEADER
   =========================================== */

.site-header {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-sm) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

/* Brand / Logo */
.brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
}

.brand:hover {
    opacity: 0.9;
}

.brand img {
    height: 42px;
    width: auto;
}

.brand-text {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: var(--weight-black);
    color: var(--brand-teal);
    letter-spacing: -0.5px;
    line-height: 1;
}

/* Data Freshness Badge (replaces "LIVE FEED") */
.data-freshness {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-pencil);
    letter-spacing: 0.5px;
}


/* ===========================================
   HERO SECTION
   =========================================== */

.hero {
    max-width: 800px;
    margin: var(--space-xl) auto var(--space-lg) auto;
    text-align: center;
    padding: 0 var(--container-padding);
}

.hero h1 {
    font-family: var(--font-serif);
    font-size: var(--text-3xl);
    font-weight: var(--weight-black);
    color: var(--text-ink);
    margin: 0 0 var(--space-sm) 0;
    letter-spacing: -1px;
    line-height: var(--leading-tight);
}

.hero p {
    font-size: var(--text-lg);
    color: var(--text-pencil);
    max-width: 600px;
    margin: 0 auto;
}

/* Trust Signal */
.trust-signal {
    margin-top: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-faint);
    letter-spacing: 0.5px;
}


/* ===========================================
   GRID LAYOUT
   =========================================== */

.grid-container {
    max-width: var(--container-max);
    margin: 0 auto var(--space-2xl) auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-md);
}

/* Grid Spans */
.span-12 { grid-column: span 12; }
.span-8 { grid-column: span 8; }
.span-6 { grid-column: span 6; }
.span-4 { grid-column: span 4; }
.span-3 { grid-column: span 3; }

@media (max-width: 768px) {
    .span-8, .span-6, .span-4, .span-3 {
        grid-column: span 12;
    }
    
    .hero h1 {
        font-size: var(--text-2xl);
    }
}


/* ===========================================
   CARDS - Base Styles
   =========================================== */

.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-decoration: none;
    transition: 
        transform var(--transition-base),
        border-color var(--transition-base),
        box-shadow var(--transition-base);
}

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

/* Card with Image */
.card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid var(--border-color);
}

.card-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: space-between;
}


/* ===========================================
   CARDS - Typography
   =========================================== */

.card-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--brand-orange);
    margin-bottom: var(--space-sm);
}

.card-label-secondary {
    color: var(--text-pencil);
}

.card h3 {
    font-family: var(--font-serif);
    font-size: var(--text-xl);
    font-weight: var(--weight-bold);
    margin: 0 0 var(--space-sm) 0;
    color: var(--text-ink);
    line-height: var(--leading-snug);
}

.card p {
    color: var(--text-pencil);
    font-size: var(--text-sm);
    margin: 0;
    line-height: var(--leading-normal);
}


/* ===========================================
   CARDS - Data Display
   =========================================== */

.data-row {
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.big-number {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: var(--weight-bold);
    color: var(--text-ink);
    line-height: 1;
}

/* Trend Tags */
.trend-tag {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.trend-up {
    background: #FEF2F2;
    color: var(--color-negative);
    border: 1px solid #FECACA;
}

.trend-down {
    background: #ECFDF5;
    color: var(--color-positive);
    border: 1px solid #A7F3D0;
}


/* ===========================================
   CARDS - CTA Links
   =========================================== */

.cta-link {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--brand-orange);
    margin-top: var(--space-md);
    display: inline-block;
}

.cta-link-alt {
    color: var(--brand-teal);
}


/* ===========================================
   CARDS - Locked/Coming Soon State
   =========================================== */

.card.locked {
    opacity: 0.7;
    background: var(--bg-muted);
    border-style: dashed;
    cursor: default;
}

.card.locked:hover {
    transform: none;
    border-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.card.locked .card-label {
    color: var(--text-pencil);
}


/* ===========================================
   FOOTER
   =========================================== */

.site-footer {
    border-top: 1px solid var(--border-color);
    text-align: center;
    padding: var(--space-lg) var(--container-padding);
    margin-top: var(--space-xl);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-pencil);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--brand-orange);
}

.footer-meta {
    margin-top: var(--space-md);
    font-size: var(--text-xs);
    color: var(--text-faint);
}

.footer-source {
    margin-top: var(--space-sm);
    font-size: var(--text-xs);
    color: var(--text-faint);
    font-family: var(--font-mono);
}