/* ===== MiCryptoGuía - Main Stylesheet ===== */

/* CSS Variables */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #080b16;
    --bg-secondary: #0d1124;
    --bg-card: #111633;
    --bg-card-hover: #181e45;
    --bg-surface: #151b38;
    --border-color: #1e2550;
    --border-light: #2a3270;

    /* Text */
    --text-primary: #eeeff4;
    --text-secondary: #9ca3c8;
    --text-muted: #5e6796;
    --text-white: #ffffff;

    /* Accent - Gold/Amber */
    --accent: #f7931a;
    --accent-light: #fbb040;
    --accent-dark: #d47810;
    --accent-glow: rgba(247, 147, 26, 0.2);

    /* Semantic Colors */
    --green: #00d4aa;
    --green-bg: rgba(0, 212, 170, 0.1);
    --red: #ff4757;
    --red-bg: rgba(255, 71, 87, 0.1);
    --blue: #4d7cfe;
    --blue-bg: rgba(77, 124, 254, 0.1);
    --purple: #a855f7;
    --purple-bg: rgba(168, 85, 247, 0.1);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #f7931a 0%, #fbb040 50%, #f7931a 100%);
    --gradient-text: linear-gradient(135deg, #f7931a 0%, #fbb040 100%);
    --gradient-hero: linear-gradient(180deg, #080b16 0%, #0d1124 50%, #111633 100%);
    --gradient-card: linear-gradient(135deg, rgba(247, 147, 26, 0.08) 0%, rgba(247, 147, 26, 0.02) 100%);

    /* Typography */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', monospace;

    /* Spacing */
    --nav-height: 70px;
    --container-max: 1200px;
    --section-padding: 100px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--accent-glow);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition: 250ms ease;
    --transition-slow: 400ms ease;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f8f9fc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f0f2f8;
    --bg-surface: #eef0f6;
    --border-color: #e2e5f0;
    --border-light: #d0d4e2;
    --text-primary: #1a1d2e;
    --text-secondary: #555b78;
    --text-muted: #8b90a8;
    --text-white: #1a1d2e;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(247, 147, 26, 0.15);
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition), color var(--transition);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: var(--section-padding) 0;
    position: relative;
}

/* ===== Typography ===== */
.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(8, 11, 22, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition);
}

[data-theme="light"] .navbar {
    background: rgba(248, 249, 252, 0.85);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    z-index: 1001;
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--accent);
}

.logo-accent {
    color: var(--accent);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    padding: 8px 14px;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: var(--bg-surface);
}

.nav-link.active {
    color: var(--accent);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 1001;
}

.search-toggle,
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.search-toggle:hover,
.theme-toggle:hover {
    color: var(--text-primary);
    border-color: var(--border-light);
}

.theme-toggle .moon-icon {
    display: none;
}

[data-theme="light"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="light"] .theme-toggle .moon-icon {
    display: block;
}

/* Mobile menu button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    width: 36px;
    height: 36px;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-secondary);
    border-radius: 2px;
    transition: all var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* Search Overlay */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 2000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 120px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-container {
    width: 100%;
    max-width: 600px;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 16px 56px 16px 24px;
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1.1rem;
    font-family: var(--font);
    outline: none;
    transition: border-color var(--transition);
}

.search-input:focus {
    border-color: var(--accent);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-close {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.search-close:hover {
    color: var(--text-primary);
    background: var(--bg-surface);
}

.search-results {
    margin-top: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    max-height: 400px;
    overflow-y: auto;
    display: none;
}

.search-results.active {
    display: block;
}

.search-result-item {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background: var(--bg-card-hover);
}

.search-result-item h4 {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.search-result-item p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.no-results {
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 60px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(247, 147, 26, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(247, 147, 26, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(circle at 50% 50%, black 40%, transparent 70%);
    -webkit-mask-image: radial-gradient(circle at 50% 50%, black 40%, transparent 70%);
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.hero-orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent);
    top: -200px;
    right: -100px;
}

.hero-orb-2 {
    width: 400px;
    height: 400px;
    background: var(--blue);
    bottom: -100px;
    left: -100px;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 650px;
    margin: 0 auto 36px;
}

.hero-cta {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    color: var(--text-muted);
    opacity: 0.6;
    transition: opacity var(--transition);
}

.scroll-indicator:hover {
    opacity: 1;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #000;
}

.btn-primary:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--border-light);
    background: var(--bg-card-hover);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-outline-light {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline-light:hover {
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.05);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.05rem;
}

.btn-block {
    display: flex;
    width: 100%;
    justify-content: center;
}

/* ===== Section Headers ===== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Quickstart Level Cards ===== */
.level-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.level-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    transition: all var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.level-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-light);
}

.level-card.featured {
    border-color: var(--accent);
    background: var(--gradient-card);
}

.level-card.featured:hover {
    box-shadow: var(--shadow-glow);
}

.level-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.level-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 12px;
    width: fit-content;
}

.level-badge.principiante {
    background: var(--green-bg);
    color: var(--green);
}

.level-badge.intermedio {
    background: var(--blue-bg);
    color: var(--blue);
}

.level-badge.avanzado {
    background: var(--purple-bg);
    color: var(--purple);
}

.level-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.level-card > p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.level-topics {
    margin-bottom: 24px;
    flex: 1;
}

.level-topics li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 6px 0 6px 20px;
    position: relative;
}

.level-topics li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

.level-card .btn {
    align-self: flex-start;
}

/* ===== Fundamentos Cards ===== */
.fundamentos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}

.fundamento-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition);
    display: flex;
    gap: 20px;
}

.fundamento-card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-md);
}

.card-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.card-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.card-content > p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 14px;
}

.card-details {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.detail-item {
    padding: 4px 10px;
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.detail-item strong {
    color: var(--text-primary);
}

.card-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    transition: opacity var(--transition-fast);
}

.card-link:hover {
    opacity: 0.8;
}

/* ===== Guías Tabs ===== */
.guias-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 40px;
}

.guia-tab {
    padding: 10px 22px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    font-family: var(--font);
    cursor: pointer;
    transition: all var(--transition);
}

.guia-tab:hover {
    color: var(--text-primary);
    border-color: var(--border-light);
}

.guia-tab.active {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
    font-weight: 600;
}

.guia-panel {
    display: none;
}

.guia-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.guia-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.guia-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.guia-item:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-sm);
}

.guia-num {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent);
    opacity: 0.4;
    min-width: 40px;
}

.guia-info {
    flex: 1;
}

.guia-info h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.guia-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.guia-meta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.guia-item .btn {
    flex-shrink: 0;
}

/* ===== Exchange Table ===== */
.exchange-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.exchange-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.exchange-table th {
    background: var(--bg-surface);
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.exchange-table td {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    vertical-align: middle;
}

.exchange-table tbody tr {
    transition: background var(--transition-fast);
}

.exchange-table tbody tr:hover {
    background: var(--bg-card-hover);
}

.exchange-cell {
    display: flex;
    align-items: center;
    gap: 10px;
}

.exchange-cell strong {
    display: block;
    color: var(--text-primary);
}

.exchange-cell small {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.exchange-icon {
    font-size: 1.4rem;
}

.highlight {
    color: var(--accent);
    font-weight: 600;
}

.security-stars {
    color: var(--accent);
    letter-spacing: 2px;
}

/* ===== Wallets Grid ===== */
.wallets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.wallet-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition);
}

.wallet-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-light);
}

.wallet-type {
    padding: 8px 16px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-align: center;
}

.wallet-type.hot {
    background: var(--blue-bg);
    color: var(--blue);
}

.wallet-type.cold {
    background: var(--accent-glow);
    color: var(--accent);
}

.wallet-body {
    padding: 24px 20px;
}

.wallet-body h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.wallet-body > p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.wallet-features {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}

.wallet-features span {
    padding: 4px 10px;
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.wallet-pros {
    padding: 12px;
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.wallet-pros strong {
    color: var(--text-primary);
}

/* ===== DeFi Grid ===== */
.defi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 20px;
}

.defi-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 28px;
    transition: all var(--transition);
}

.defi-card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-md);
}

.defi-emoji {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 16px;
}

.defi-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.defi-card > p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 18px;
}

.defi-stats {
    display: flex;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.defi-stat {
    text-align: center;
}

.defi-stat-value {
    display: block;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
}

.defi-stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ===== Seguridad ===== */
.seguridad-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 20px;
}

.seguridad-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 28px;
    transition: all var(--transition);
    position: relative;
}

.seguridad-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

.seguridad-num {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--accent);
    opacity: 0.15;
    position: absolute;
    top: 16px;
    right: 24px;
    line-height: 1;
}

.seguridad-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
    padding-right: 40px;
}

.seguridad-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ===== Tools Grid ===== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.tool-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition);
    text-align: center;
}

.tool-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

.tool-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 12px;
}

.tool-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.tool-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ===== Glosario ===== */
.glosario-filter {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 32px;
}

.glosario-tag {
    padding: 7px 18px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    font-family: var(--font);
    cursor: pointer;
    transition: all var(--transition);
}

.glosario-tag:hover {
    color: var(--text-primary);
    border-color: var(--border-light);
}

.glosario-tag.active {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
}

.glosario-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
}

.glosario-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    transition: all var(--transition);
}

.glosario-item:hover {
    border-color: var(--border-light);
}

.glosario-item.hidden {
    display: none;
}

.glosario-item dt {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 6px;
}

.glosario-item dd {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== CTA Section ===== */
.cta-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 60px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, var(--accent-glow), transparent 70%);
    opacity: 0.3;
}

.cta-card > * {
    position: relative;
}

.cta-card h2 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.cta-card p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 28px;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 16px;
    line-height: 1.6;
}

.footer-disclaimer {
    margin-top: 16px;
    padding: 14px 16px;
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    font-size: 0.8rem !important;
    color: var(--text-muted) !important;
    line-height: 1.6;
}

.footer-disclaimer strong {
    color: var(--text-secondary);
}

.footer-links h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-links a {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 6px 0;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-primary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 8px;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition);
    }

    .nav-menu.active {
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        font-size: 1.2rem;
        padding: 14px 24px;
    }

    .hero-stats {
        gap: 24px;
    }

    .guia-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .guia-item .btn {
        align-self: stretch;
        text-align: center;
    }

    .fundamento-card {
        flex-direction: column;
        gap: 16px;
    }

    .exchange-table {
        font-size: 0.8rem;
    }

    .exchange-table th,
    .exchange-table td {
        padding: 10px 8px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .cta-card {
        padding: 40px 24px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .level-cards,
    .fundamentos-grid,
    .defi-grid,
    .seguridad-grid {
        grid-template-columns: 1fr;
    }

    .wallets-grid {
        grid-template-columns: 1fr;
    }

    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .glosario-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ===== Selection ===== */
::selection {
    background: var(--accent);
    color: #000;
}