/* Binance / Crypto Exchange Design System */
@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap");
@import url("https://cdn.jsdelivr.net/npm/highlight.js@11.9.0/styles/github-dark.min.css");

:root {
    /* Brand Colors */
    --c-yellow: #F0B90B;
    --c-gold: #FFD000;
    
    /* Surface & Background */
    --c-bg-light: #FFFFFF;
    --c-bg-snow: #F5F5F5;
    --c-bg-dark: #222126;
    --c-card-dark: #2B2F36;
    
    /* Text */
    --c-text-ink: #1E2026;
    --c-text-slate: #848E9C;
    --c-text-white: #FFFFFF;
    
    /* UI Elements */
    --c-border-light: #E6E8EA;
    --c-success: #0ECB81;
    --c-error: #F6465D;

    /* Typography */
    --font-primary: "IBM Plex Sans", system-ui, sans-serif;
    --font-code: "JetBrains Mono", ui-monospace, monospace;

    /* Scaled for 1080p canvas */
    --fs-display: 4.5rem;   /* ~72px */
    --fs-display-sec: 3rem; /* ~48px */
    --fs-h1: 2.5rem;        /* ~40px */
    --fs-h2: 2rem;          /* ~32px */
    --fs-h3: 1.75rem;       /* ~28px */
    --fs-body-lg: 1.5rem;   /* ~24px */
    --fs-body: 1.25rem;     /* ~20px */
    --fs-button: 1.25rem;
    --fs-caption: 1rem;     /* ~16px */
    --fs-micro: 0.85rem;    /* ~13.5px */
}

/* Base resets handled by Reveal, but we enforce font */
.reveal {
    font-family: var(--font-primary);
    font-size: var(--fs-body);
    line-height: 1.5;
    font-variant-numeric: tabular-nums;
}

/* Headings */
.reveal h1, .reveal h2, .reveal h3, .reveal h4 {
    font-family: var(--font-primary);
    line-height: 1.1;
    margin: 0;
    text-transform: none;
    letter-spacing: -0.01em;
}

/* Dark mode by default for Reveal's reset, overridden by data-background-color */
.reveal section { color: var(--c-text-ink); }
.reveal section[data-background-color="#222126"] { color: var(--c-text-white); }
.reveal section[data-background-color="#222126"] h1,
.reveal section[data-background-color="#222126"] h2,
.reveal section[data-background-color="#222126"] h3 {
    color: var(--c-text-white);
}

.reveal section[data-background-color="#FFFFFF"] h1,
.reveal section[data-background-color="#FFFFFF"] h2,
.reveal section[data-background-color="#FFFFFF"] h3 {
    color: var(--c-text-ink);
}

.reveal em { color: var(--c-yellow); font-style: normal; font-weight: 700; }
.reveal strong { font-weight: 700; }
.reveal a { color: var(--c-yellow); text-decoration: none; }

.reveal pre, .reveal code { font-family: var(--font-code); font-size: var(--fs-body); }
.reveal pre { background: var(--c-card-dark); border-radius: 8px; border: 1px solid var(--c-border-light); padding: 1.5rem; }
.reveal section[data-background-color="#222126"] pre { border-color: transparent; }

/* Buttons */
.btn-pill {
    display: inline-block;
    background: var(--c-yellow);
    color: var(--c-text-ink) !important;
    font-weight: 600;
    font-size: var(--fs-button);
    padding: 1rem 3rem;
    border-radius: 50px;
    transition: background 0.2s ease;
    box-shadow: rgba(153,153,153, 0.2) 0px 2px 10px -3px;
    margin-top: 1rem;
}

/* ==== per-slide CSS below ==== */

/* General utils */
.text-slate { color: var(--c-text-slate); }
.text-success { color: var(--c-success); }
.text-error { color: var(--c-error); }
.font-bold { font-weight: 700; }

/* 010 Cover */
.cover-hero {
    text-align: center;
}
.cover-hero-eyebrow {
    color: var(--c-yellow);
    font-size: var(--fs-body-lg);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}
.cover-hero h1 {
    font-size: var(--fs-display);
    font-weight: 700;
    margin-bottom: 1.5rem;
}
.cover-hero p {
    font-size: var(--fs-body-lg);
    color: var(--c-text-slate);
    max-width: 800px;
    margin: 0 auto;
}

/* 020 Content Problem */
.fiat-problem-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.fiat-problem h2 {
    font-size: var(--fs-display-sec);
    margin-bottom: 2rem;
}
.fiat-problem p {
    color: var(--c-text-slate);
    margin-bottom: 1.5rem;
}
.stat-box {
    background: var(--c-bg-snow);
    border: 1px solid var(--c-border-light);
    border-radius: 12px;
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: rgba(32, 32, 37, 0.05) 0px 3px 5px 0px;
}
.stat-box .stat-val {
    font-size: var(--fs-display-sec);
    font-weight: 700;
    color: var(--c-text-ink);
    margin-bottom: 0.5rem;
}
.stat-box .stat-lbl {
    font-size: var(--fs-caption);
    color: var(--c-text-slate);
}
.fiat-problem img {
    border-radius: 12px;
    width: 100%;
}

/* 030 Genesis Block */
.genesis-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: left;
}
.genesis-grid h2 {
    font-size: var(--fs-display-sec);
    margin-bottom: 1rem;
}
.genesis-grid p {
    color: var(--c-text-slate);
    font-size: var(--fs-body-lg);
    max-width: 1000px;
}
.code-window {
    background: var(--c-card-dark);
    border-radius: 12px;
    padding: 2rem;
    font-family: var(--font-code);
    color: var(--c-success);
    font-size: var(--fs-body);
    box-shadow: rgba(8, 8, 8, 0.2) 0px 10px 30px;
    overflow-x: auto;
    white-space: pre-wrap;
}

/* 040 Mechanics */
.mechanics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.mechanics-grid h2 {
    font-size: var(--fs-display-sec);
    margin-bottom: 1.5rem;
}
.mechanics-grid p {
    color: var(--c-text-slate);
    margin-bottom: 1.5rem;
}
.mechanics-grid ul {
    padding-left: 1.5rem;
    color: var(--c-text-ink);
}
.mechanics-grid li {
    margin-bottom: 1rem;
}
.mechanics-grid img {
    border-radius: 12px;
    box-shadow: rgba(32, 32, 37, 0.05) 0px 3px 5px 0px;
}

/* 050 Quote */
.quote-slide {
    text-align: center;
}
.quote-slide .big-number {
    font-size: 8rem;
    font-weight: 700;
    color: var(--c-yellow);
    line-height: 1;
    margin-bottom: 1rem;
}
.quote-slide p {
    font-size: var(--fs-display-sec);
    color: var(--c-text-white);
}

/* 060 Nodes */
.nodes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}
.nodes-header h2 {
    font-size: var(--fs-display-sec);
    margin-bottom: 1rem;
    text-align: center;
}
.nodes-header p {
    text-align: center;
    color: var(--c-text-slate);
    max-width: 800px;
    margin: 0 auto;
}
.data-card {
    background: var(--c-bg-snow);
    border: 1px solid var(--c-border-light);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    box-shadow: rgba(32, 32, 37, 0.05) 0px 3px 5px 0px;
}
.data-card .data-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}
.data-card .data-val {
    font-size: var(--fs-h1);
    font-weight: 700;
    color: var(--c-text-ink);
    margin-bottom: 0.5rem;
}
.data-card .data-lbl {
    color: var(--c-text-slate);
    font-size: var(--fs-caption);
}
.ticker-trend {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: var(--fs-caption);
    font-weight: 600;
    margin-top: 0.5rem;
}

/* 070 Comparison */
.compare-table-wrapper {
    margin-top: 3rem;
    background: var(--c-bg-snow);
    border-radius: 12px;
    border: 1px solid var(--c-border-light);
    overflow: hidden;
}
.compare-slide h2 { text-align: center; font-size: var(--fs-display-sec); }
.compare-slide p { text-align: center; color: var(--c-text-slate); margin-top: 1rem; }
.compare-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
.compare-table th {
    background: var(--c-bg-light);
    padding: 1.5rem 2rem;
    font-size: var(--fs-body);
    font-weight: 600;
    color: var(--c-text-ink);
    border-bottom: 1px solid var(--c-border-light);
}
.compare-table td {
    padding: 1.5rem 2rem;
    font-size: var(--fs-body);
    color: var(--c-text-ink);
    border-bottom: 1px solid var(--c-border-light);
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table td:not(:first-child), .compare-table th:not(:first-child) {
    text-align: center;
}
.check-icon { color: var(--c-success); font-weight: bold; }
.cross-icon { color: var(--c-error); font-weight: bold; }

/* 080 Lightning */
.lightning-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.lightning-grid h2 { font-size: var(--fs-display-sec); margin-bottom: 1.5rem; color: var(--c-text-white); }
.lightning-grid p { color: var(--c-text-slate); margin-bottom: 1.5rem; }
.lightning-grid ul { padding-left: 1.5rem; color: var(--c-text-white); }
.lightning-grid li { margin-bottom: 1rem; }
.lightning-grid img { border-radius: 12px; }

/* 090 Adoption */
.adoption-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.adoption-grid h2 { font-size: var(--fs-display-sec); margin-bottom: 1.5rem; }
.adoption-grid p { color: var(--c-text-slate); margin-bottom: 1.5rem; }
.adoption-grid img { border-radius: 12px; }
.ticker-banner {
    background: var(--c-bg-dark);
    color: var(--c-text-white);
    padding: 1rem 2rem;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
}
.ticker-banner .pair { font-weight: 600; font-family: var(--font-code); }
.ticker-banner .price { font-weight: 700; color: var(--c-yellow); font-family: var(--font-code); }
.ticker-banner .change { color: var(--c-success); font-family: var(--font-code); }

/* 100 Closing */
.closing-slide {
    text-align: center;
}
.closing-slide h2 {
    font-size: var(--fs-display);
    margin-bottom: 1.5rem;
}
.closing-slide p {
    font-size: var(--fs-body-lg);
    color: var(--c-text-slate);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}