/* Crypto Ledger Download - Warm tones, modern, responsive */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --warm-dark: #2c2419;
    --warm-darker: #1f1912;
    --warm-bg: #3d3226;
    --warm-card: #4a3f32;
    --accent-amber: #d4a03a;
    --accent-terracotta: #c4704a;
    --accent-cream: #f5e6d3;
    --text-primary: #f5e6d3;
    --text-secondary: #c9b896;
    --text-muted: #9c8b6e;
    --border-warm: #5c4d3d;
    --gradient-warm: linear-gradient(135deg, #d4a03a 0%, #c4704a 50%, #a85a3a 100%);
    --shadow-soft: 0 4px 24px rgba(0,0,0,0.25);
    --radius: 12px;
    --radius-lg: 20px;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--warm-darker);
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(212, 160, 58, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(196, 112, 74, 0.08) 0%, transparent 50%);
    color: var(--text-primary);
    line-height: 1.65;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Typography */
h1 { font-size: clamp(1.75rem, 4vw, 2.25rem); margin-bottom: 1rem; line-height: 1.25; color: var(--accent-cream); }
h2 { font-size: clamp(1.35rem, 3vw, 1.6rem); margin: 2rem 0 1rem; color: var(--accent-amber); border-bottom: 1px solid var(--border-warm); padding-bottom: 0.5rem; }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.25rem); margin: 1.5rem 0 0.75rem; color: var(--text-secondary); }
p { margin-bottom: 1rem; color: var(--text-secondary); }
a { color: var(--accent-amber); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-cream); text-decoration: underline; }

/* Layout */
.container { max-width: 900px; margin: 0 auto; padding: 0 1.25rem; }
.container--wide { max-width: 1100px; margin: 0 auto; padding: 0 1.25rem; }

/* Header */
header {
    background: linear-gradient(180deg, var(--warm-dark) 0%, rgba(44,36,25,0.97) 100%);
    padding: 0.9rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-soft);
    border-bottom: 1px solid var(--border-warm);
}

nav {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--accent-cream);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.logo:hover { color: var(--accent-amber); text-decoration: none; }

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    flex-wrap: wrap;
}
.nav-links a {
    display: block;
    padding: 0.5rem 0.85rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    border-radius: 8px;
}
.nav-links a:hover { background: rgba(212,160,58,0.15); color: var(--accent-cream); text-decoration: none; }

/* Language switcher - links only */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}
.lang-switcher a {
    color: var(--text-muted);
    padding: 0.35rem 0.6rem;
    border-radius: 6px;
}
.lang-switcher a:hover { color: var(--accent-amber); background: rgba(212,160,58,0.12); text-decoration: none; }
.lang-switcher .active { color: var(--accent-amber); font-weight: 600; }
.lang-switcher span { color: var(--text-muted); margin: 0 0.15rem; }

/* Hero */
.hero {
    padding: 2.5rem 0;
    text-align: center;
    background: linear-gradient(180deg, rgba(212,160,58,0.06) 0%, transparent 70%);
}
.hero h1 { margin-bottom: 0.75rem; }
.hero p { font-size: 1.05rem; max-width: 640px; margin: 0 auto; color: var(--text-secondary); }

/* Content sections - different blocks */
.content-section {
    padding: 2rem 0 3rem;
}
.content-section .subsection {
    margin-bottom: 2.5rem;
}
.content-section .subsection > p:first-of-type { margin-top: 0; }

/* Card block */
.block-card {
    background: var(--warm-card);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    margin: 1.5rem 0;
    border: 1px solid var(--border-warm);
    box-shadow: var(--shadow-soft);
}

/* Image block - not too large */
.image-wrap {
    margin: 1.5rem 0;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-warm);
    max-width: 560px;
}
.image-wrap img {
    width: 100%;
    height: auto;
    display: block;
    vertical-align: middle;
    loading: lazy;
}
.content-image { max-width: 100%; height: auto; border-radius: var(--radius); }

/* Tables */
.table-wrap { overflow-x: auto; margin: 1.5rem 0; border-radius: var(--radius); border: 1px solid var(--border-warm); }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--border-warm); color: var(--text-secondary); }
th { background: var(--warm-card); color: var(--accent-cream); font-weight: 600; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(212,160,58,0.05); }

/* Lists */
ul:not(.nav-links), ol { margin: 1rem 0 1rem 1.5rem; }
ul:not(.nav-links) li, ol li { margin-bottom: 0.5rem; color: var(--text-secondary); }

/* FAQ */
.faq-section { margin-top: 2.5rem; }
.faq-section h2 { margin-bottom: 1.25rem; }
.faq-list { list-style: none; margin: 0; padding: 0; }
.faq-item { border: 1px solid var(--border-warm); border-radius: var(--radius); margin-bottom: 0.5rem; overflow: hidden; background: var(--warm-card); }
.faq-question {
    width: 100%;
    padding: 1rem 1.25rem;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-cream);
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    transition: background 0.2s;
}
.faq-question:hover { background: rgba(212,160,58,0.1); }
.faq-icon { font-size: 1.25rem; color: var(--accent-amber); flex-shrink: 0; transition: transform 0.25s; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer { padding: 0 1.25rem; overflow: hidden; }
.faq-answer-inner { padding-bottom: 1rem; color: var(--text-secondary); font-size: 0.98rem; max-height: 0; overflow: hidden; opacity: 0; transition: max-height 0.3s ease, opacity 0.25s ease; }
.faq-item.active .faq-answer-inner { max-height: 800px; opacity: 1; }

/* Footer */
footer {
    margin-top: 3rem;
    padding: 2rem 0;
    background: var(--warm-dark);
    border-top: 1px solid var(--border-warm);
}
.footer-inner { max-width: 1100px; margin: 0 auto; padding: 0 1.25rem; }
.footer-menu { display: flex; flex-wrap: wrap; gap: 1.5rem 2rem; margin-bottom: 1.5rem; list-style: none; }
.footer-menu a { color: var(--text-secondary); }
.footer-menu a:hover { color: var(--accent-amber); }
.footer-lang { margin-bottom: 1rem; font-size: 0.9rem; }
.footer-lang a { color: var(--text-muted); margin-right: 0.75rem; }
.footer-copy { font-size: 0.875rem; color: var(--text-muted); }

/* Utility */
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* Responsive */
@media (max-width: 768px) {
    nav { flex-direction: column; align-items: flex-start; }
    .nav-links { gap: 0; }
    .nav-links a { padding: 0.5rem 0.75rem; }
    .hero { padding: 1.75rem 0; }
    .content-section { padding: 1.5rem 0 2rem; }
    h2 { margin-top: 1.5rem; }
    .image-wrap { max-width: 100%; }
    .footer-menu { flex-direction: column; gap: 0.75rem; }
}

@media (max-width: 480px) {
    html { font-size: 15px; }
    .container, .container--wide { padding: 0 1rem; }
}