/* ==========================================================================
   Bitcoin Data Labs — Deep Dives (Light Mode Design System)
   Official Brand Ecosystem Styles (Aligned with Bitcoin Data Labs & PlebDashboard)
   ========================================================================== */

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

:root {
    /* Brand Terracotta & Warmth (Artisanal Organic Clay - Signature Accent) */
    --primary: #D47355;             /* Refined Terracotta */
    --primary-hover: #BF6245;       /* Deepened Terracotta */
    --primary-dark: #A95137;        /* Hearth Terracotta */
    --primary-light: #FBF2ED;       /* Whisper Terracotta Tint */
    --primary-border: #ECCDC1;      /* Soft Terracotta Border */
    --primary-wash-hover: #F3E6DE;  /* Elevated Warm Wash on Hover */

    /* Deep Ink & Slate (Authoritative Structure) */
    --secondary: #242D38;           /* Deep Charcoal Slate */
    --secondary-hover: #182029;     /* Deep Ink Hover */
    --secondary-light: #F0F3F6;     /* Slate Mist Tint */

    /* Canvas & Surfaces (Warm Rice Paper, Ivory & Parchment) */
    --bg-primary: #FAF8F5;          /* Warm Alabaster Canvas */
    --bg-secondary: #F3EFEA;        /* Soft Warm Oatmeal Track */
    --surface: #FFFFFF;             /* Crisp Parchment Card */
    --surface-hover: #FDFCF9;       /* Card Hover Tint */

    /* Typography (Calm, Readable Ink) */
    --text-primary: #242D38;        /* Literary Deep Slate */
    --text-secondary: #5E6977;      /* Neutral Weathered Slate */
    --text-muted: #8893A0;          /* Soft Caption Grey */

    /* Borders & Dividers (Subtle, Natural Earth) */
    --border: #E5DFD5;
    --border-color: #E5DFD5;
    --border-subtle: #EFEBE4;

    /* Natural Accent Tones */
    --tag-sage: #2E7559;            /* Deep Pine (On-Chain / Active) */
    --tag-sage-bg: #EDF5F0;
    --tag-sage-border: #D1E5D8;

    --tag-madder: #A93E3B;          /* Earthy Madder Red (Security / Forensics) */
    --tag-madder-bg: #FBEFEF;
    --tag-madder-border: #F3D2D2;

    --tag-amber: #9A6715;           /* Harvest Amber (Hardware / Mining) */
    --tag-amber-bg: #FEF7EA;
    --tag-amber-border: #F5E2B8;

    --tag-heather: #583F7A;         /* Heather Purple (Lightning Network) */
    --tag-heather-bg: #F2EEF8;
    --tag-heather-border: #E2D9EE;

    /* Header & Layout Specifics (Matches plebdashboard-ln) */
    --header-height: 80px;
    --max-width: 1160px;
    --z-header: 1000;

    /* Shadows & Transitions */
    --shadow-sm: 0 1px 3px rgba(36, 45, 56, 0.05);
    --shadow-md: 0 4px 16px rgba(36, 45, 56, 0.06);
    --shadow-hover: 0 8px 24px rgba(212, 115, 85, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

/* Reset & Base */
* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
}

body.has-fixed-header {
    padding-top: var(--header-height);
}

/* ==========================================================================
   OFFICIAL BITCOIN DATA LABS HEADER (EXACTLY AS IN PLEBDASHBOARD-LN)
   ========================================================================== */

.top-bar {
    background: rgba(250, 248, 245, 0.95);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: var(--z-header);
    border-bottom: 1px solid var(--border);
    transition: all 0.25s ease;
}

.bdl-header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: var(--header-height);
    display: flex;
    align-items: center;
}

.logos-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.app-logo {
    display: flex;
    align-items: center;
}

.app-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none !important;
    letter-spacing: -0.01em;
    transition: opacity 0.2s ease;
}

.app-name:hover {
    opacity: 0.85;
}

.divider {
    width: 1px;
    height: 30px;
    background: var(--border);
    margin: 0 0.25rem;
}

.parent-logo {
    display: flex;
    align-items: center;
}

.parent-logo-img {
    height: 40px;
    width: auto;
    display: block;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.parent-logo-img:hover {
    transform: scale(1.03);
    opacity: 0.95;
}

/* ==========================================================================
   PAGE CONTENT & HERO
   ========================================================================== */

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: var(--max-width);
    width: 100%;
    margin: 0 auto;
    padding: 40px 24px 80px 24px;
}

.hero-section {
    padding-bottom: 24px;
}

.brand-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    border: 1px solid var(--primary-border);
    margin-bottom: 16px;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin: 0 0 12px 0;
}

.hero-title .highlight {
    color: var(--primary);
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 760px;
    margin: 0 0 28px 0;
}

/* Search Container */
.search-bar-wrap {
    margin-bottom: 36px;
    max-width: 520px;
}

.search-container {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.search-input {
    width: 100%;
    padding: 12px 42px 12px 38px;
    font-size: 0.95rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    outline: none;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(212, 115, 85, 0.15);
}

.search-shortcut {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: monospace;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.dive-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 26px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    text-decoration: none;
    color: inherit;
}

.dive-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-border);
}

.dive-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
    font-size: 0.75rem;
}

.dive-date {
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-muted);
}

.dive-badge {
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.badge-template {
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid var(--primary-border);
}

.badge-lightning {
    background: var(--tag-heather-bg);
    color: var(--tag-heather);
    border: 1px solid var(--tag-heather-border);
}

.badge-security {
    background: var(--tag-madder-bg);
    color: var(--tag-madder);
    border: 1px solid var(--tag-madder-border);
}

.badge-onchain {
    background: var(--tag-sage-bg);
    color: var(--tag-sage);
    border: 1px solid var(--tag-sage-border);
}

.badge-hardware {
    background: var(--tag-amber-bg);
    color: var(--tag-amber);
    border: 1px solid var(--tag-amber-border);
}

.dive-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.35;
    margin: 0 0 10px 0;
    transition: color 0.2s ease;
}

.dive-card:hover .dive-card-title {
    color: var(--primary);
}

.dive-card-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.55;
    margin: 0 0 20px 0;
}

.dive-card-footer {
    padding-top: 16px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
}

.dive-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.dive-tag {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.dive-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    transition: transform 0.2s ease;
}

.dive-card:hover .dive-action {
    transform: translateX(3px);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--surface);
    border: 1px dashed var(--border);
    border-radius: var(--radius-lg);
    grid-column: 1 / -1;
}

.empty-state i {
    font-size: 2rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.empty-state h3 {
    margin: 0 0 6px 0;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.empty-state p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ==========================================================================
   OFFICIAL BITCOIN DATA LABS FOOTER (EXACTLY AS IN PLEBDASHBOARD-LN)
   Left: Copyright | Middle: None | Right: Social Icons
   ========================================================================== */

.bdl-global-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 2.5rem 0;
    margin-top: auto;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.bdl-footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.bdl-footer-copyright {
    text-align: left;
}

.bdl-footer-copyright a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.bdl-footer-socials {
    display: flex;
    gap: 1.2rem;
    align-items: center;
    justify-content: flex-end;
}

.bdl-footer-socials a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1.25rem;
    transition: color 0.2s ease, transform 0.2s ease;
}

.bdl-footer-socials a:hover {
    color: var(--primary);
    transform: scale(1.1);
}

@media screen and (max-width: 768px) {
    .bdl-footer-inner {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    .bdl-footer-copyright {
        text-align: center;
    }
    .bdl-footer-socials {
        justify-content: center;
    }
}