:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #e94560;
    --accent-gold: #ffd700;
    --text-color: #333;
    --text-light: #f8f9fa;
    --text-gray: #6c757d;
    --text-dark: #333;
    --bg-light: #f8f9fa;
    --border-radius: 12px;
    --border-radius-small: 6px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
    --font-main: 'Inter', sans-serif;
    --font-display: 'Noto Sans SC', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-color);
    line-height: 1.6;
    background-color: #fff;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    line-height: 1.3;
    margin-top: 0;
}

h1 { font-size: 2.5rem; margin-bottom: 1rem; }
h2 { font-size: 2rem; margin-bottom: 0.875rem; }
h3 { font-size: 1.75rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.5rem; margin-bottom: 0.625rem; }
h5 { font-size: 1.25rem; margin-bottom: 0.5rem; }
h6 { font-size: 1rem; margin-bottom: 0.5rem; }

p {
    margin-top: 0;
    margin-bottom: 1rem;
}

p:last-child {
    margin-bottom: 0;
}

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

ul, ol {
    margin-top: 0;
    margin-bottom: 1rem;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

/* Add spacing between sections */
section + section {
    margin-top: 0;
}

/* Ensure proper spacing for all direct children in containers */
.container > * + * {
    margin-top: 0;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Grid System */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
}

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

.nav-menu {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    color: rgba(255,255,255,0.8);
    transition: var(--transition);
    font-size: 0.95rem;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-light);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--text-light);
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    align-items: center;
}

.hero-text {
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.title-main {
    display: block;
    color: var(--accent-color);
}

.title-sub {
    font-size: 2rem;
    display: block;
    margin-top: 0.5rem;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.floating-cards {
    font-size: 4rem;
    display: flex;
    gap: 1rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0); }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
    text-align: center;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background: #d63384;
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: white;
    border: 1px solid rgba(255,255,255,0.2);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

/* Sections */
.content-section {
    padding: 5rem 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--text-gray);
    font-size: 1.1rem;
}

/* Cards & Components */
.card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.card-header i {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.card-header h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin: 0;
}

.card-content {
    color: var(--text-gray);
}

.card-content p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.card-content p:last-child {
    margin-bottom: 0;
}

.card-content ul, 
.card-content ol {
    margin-top: 0.5rem;
    margin-bottom: 1rem;
}

.card-content li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.highlight-box, .tip-box {
    background: rgba(233, 69, 96, 0.05);
    border-left: 3px solid var(--accent-color);
    padding: 1.5rem;
    margin-top: 1.5rem;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.tip-box {
    background: rgba(255, 215, 0, 0.1);
    border-left-color: var(--accent-gold);
}

.highlight-box h4, 
.tip-box h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.highlight-box ul, 
.highlight-box ol,
.tip-box ul, 
.tip-box ol {
    list-style: disc;
    padding-left: 1.5rem;
    margin-top: 0.75rem;
    margin-bottom: 0;
}

.highlight-box li, 
.tip-box li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.highlight-box li:last-child, 
.tip-box li:last-child {
    margin-bottom: 0;
}

.highlight-box p, 
.tip-box p {
    margin: 0;
    line-height: 1.7;
}

/* Game Flow */
.game-flow {
    margin-top: 4rem;
}

.game-flow h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.flow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.flow-step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.step-content h4 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.step-content p {
    font-size: 0.9rem;
    color: var(--text-gray);
}

/* Card Types */
.card-type {
    margin-bottom: 4rem;
}

.card-type p {
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.type-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.type-header h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin: 0;
}

.type-count {
    background: var(--primary-color);
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.8rem;
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.example-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid rgba(0,0,0,0.05);
}

.example-card h4 {
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.example-card p {
    margin: 0;
    line-height: 1.6;
    color: var(--text-gray);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

/* Poker Hands */
.hands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.hand-card {
    background: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid rgba(0,0,0,0.05);
}

.hand-visual {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    background: #f0f0f0;
    padding: 0.5rem;
    border-radius: 4px;
}

.hand-info h4 {
    font-size: 0.9rem;
    margin-bottom: 0.2rem;
}

.hand-info p {
    font-size: 0.8rem;
    color: var(--text-gray);
    margin-bottom: 0.5rem;
}

.base-value {
    font-size: 0.75rem;
    color: var(--accent-color);
    font-weight: bold;
}

/* Chips Formula */
.formula-box {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    margin-bottom: 3rem;
}

.formula {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 1.2rem;
    font-weight: bold;
    margin-top: 1.5rem;
}

.formula-part {
    background: #f0f0f0;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    color: var(--primary-color);
}

.formula-operator {
    color: var(--accent-color);
}

.formula-result {
    background: var(--accent-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

/* Chips Sources */
.source-card {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.source-card h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.source-card p {
    margin-bottom: 1rem;
    line-height: 1.7;
    color: var(--text-gray);
}

.source-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.source-card li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
    color: var(--text-gray);
}

.source-card li:last-child {
    margin-bottom: 0;
}

.source-icon {
    width: 60px;
    height: 60px;
    background: rgba(233, 69, 96, 0.1);
    color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1.5rem;
}

/* Strategy Tabs */
.strategies-tabs {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-top: 2rem;
}

.tab-nav {
    display: flex;
    background: #f8f9fa;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.tab-btn {
    flex: 1;
    padding: 1rem;
    border: none;
    background: none;
    font-weight: 600;
    cursor: pointer;
    color: var(--text-gray);
    transition: var(--transition);
}

.tab-btn.active {
    background: white;
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

.tab-content {
    padding: 2rem;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.tab-panel h4 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.tab-panel ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tab-panel li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.7;
}

.tab-panel li:last-child {
    margin-bottom: 0;
}

.tab-panel li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* Blind Types */
.blind-types {
    display: grid;
    gap: 3rem;
}

.blind-category h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.blind-description {
    margin-bottom: 2rem;
}

.blind-description p {
    line-height: 1.7;
    margin: 0;
    color: var(--text-gray);
}

.blind-examples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.blind-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-color);
    box-shadow: var(--shadow);
}

.blind-card h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.blind-card p {
    margin-bottom: 0.5rem;
    line-height: 1.6;
    color: var(--text-gray);
}

.blind-card p:last-child {
    margin-bottom: 0;
}

/* Boss Cards */
.boss-patterns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.boss-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border-top: 4px solid var(--accent-color);
}

.boss-icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}

.boss-card h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-align: center;
    font-size: 1.2rem;
}

.boss-card > p {
    color: var(--text-gray);
    text-align: center;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.counter-strategy {
    background: rgba(40, 167, 69, 0.05);
    padding: 1.5rem;
    border-radius: var(--border-radius-small);
    border-left: 3px solid #28a745;
    margin-top: 1.5rem;
}

.counter-strategy strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.counter-strategy ul {
    list-style: disc;
    padding-left: 1.5rem;
    margin: 0;
}

.counter-strategy li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
    color: var(--text-dark);
}

.counter-strategy li:last-child {
    margin-bottom: 0;
}

/* Blind Progression */
.blind-progression {
    margin-top: 4rem;
}

.blind-progression h3 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

.progression-chart {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.progression-stage {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.stage-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.stage-blinds {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.blind-requirement,
.boss-requirement {
    padding: 0.75rem;
    border-radius: var(--border-radius-small);
    font-weight: 500;
    background: rgba(0, 0, 0, 0.03);
}

.boss-requirement {
    background: rgba(233, 69, 96, 0.1);
    color: var(--accent-color);
    font-weight: 600;
}

/* Strategy Skill Tree */
.strategy-skill-tree {
    margin-top: 3rem;
}

.skill-level {
    margin-bottom: 3rem;
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.level-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid rgba(0, 0, 0, 0.05);
}

.level-header h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.level-header h3 i {
    color: var(--accent-color);
}

.level-description {
    color: var(--text-gray);
    font-size: 1.1rem;
}

.skill-topics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.topic {
    background: rgba(0, 0, 0, 0.02);
    padding: 1.5rem;
    border-radius: var(--border-radius-small);
}

.topic h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.topic ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.topic li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
    color: var(--text-gray);
}

.topic li:last-child {
    margin-bottom: 0;
}

.topic li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

/* Common Mistakes */
.common-mistakes {
    margin-top: 4rem;
}

.common-mistakes h3 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 2.5rem;
    font-size: 1.8rem;
}

.mistakes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.mistake-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.mistake-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.mistake-card h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.mistake-card > p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.solution {
    background: rgba(40, 167, 69, 0.05);
    padding: 1.5rem;
    border-radius: var(--border-radius-small);
    border-left: 3px solid #28a745;
    text-align: left;
}

.solution strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.solution p {
    margin: 0;
    line-height: 1.6;
    color: var(--text-dark);
}

/* Advanced Techniques */
.advanced-techniques {
    display: grid;
    gap: 3rem;
}

.technique-category {
    background: white;
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.technique-category h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.6rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.technique-category h3 i {
    color: var(--accent-color);
}

.technique-content > p {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.technique-example,
.calc-example {
    background: rgba(0, 0, 0, 0.02);
    padding: 2rem;
    border-radius: var(--border-radius-small);
}

.technique-example h4,
.calc-example h4 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
}

.chain-step {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: white;
    border-radius: var(--border-radius-small);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    margin-bottom: 1rem;
}

.chain-step .step-number {
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.step-description {
    flex: 1;
}

.step-description strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.chain-arrow {
    text-align: center;
    font-size: 1.5rem;
    color: var(--accent-color);
    margin: 0.5rem 0;
}

.calc-step {
    padding: 1.5rem;
    background: white;
    border-radius: var(--border-radius-small);
    margin-bottom: 1rem;
}

.calc-step:last-child {
    margin-bottom: 0;
}

.calc-label {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
}

.calc-formula {
    color: var(--text-gray);
    line-height: 1.6;
    padding-left: 1rem;
    border-left: 3px solid var(--accent-color);
}

.info-sources {
    display: grid;
    gap: 1.5rem;
}

.source-item {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius-small);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.source-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
}

.source-item p {
    margin: 0;
    color: var(--text-gray);
    line-height: 1.6;
}

/* Meta Game */
.meta-game {
    margin-top: 4rem;
}

.meta-game h3 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 2.5rem;
    font-size: 1.8rem;
}

.meta-concepts {
    display: grid;
    gap: 2rem;
}

.meta-concept {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.meta-concept h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.meta-concept > p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.adaptation-factors,
.timing-situations,
.recovery-methods {
    display: grid;
    gap: 1.5rem;
}

.factor,
.situation,
.method {
    background: rgba(0, 0, 0, 0.02);
    padding: 1.5rem;
    border-radius: var(--border-radius-small);
}

.factor strong,
.situation strong,
.method strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.factor p,
.situation p,
.method p {
    margin: 0;
    color: var(--text-gray);
    line-height: 1.6;
}

/* Build System */
.builds-system {
    margin-top: 3rem;
}

.build-category {
    margin-bottom: 4rem;
}

.category-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid rgba(0, 0, 0, 0.05);
}

.category-header h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.category-header h3 i {
    color: var(--accent-color);
}

.category-description {
    color: var(--text-gray);
    font-size: 1.1rem;
    margin: 0;
    line-height: 1.6;
}

.build-list {
    display: grid;
    gap: 2.5rem;
}

.build-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.build-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.build-header h4 {
    margin: 0;
    font-size: 1.4rem;
}

.difficulty {
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.difficulty.beginner {
    background: #28a745;
    color: white;
}

.difficulty.intermediate {
    background: #ffc107;
    color: #000;
}

.difficulty.advanced {
    background: #ff6b7d;
    color: white;
}

.difficulty.expert {
    background: #dc3545;
    color: white;
}

.build-content {
    padding: 2rem;
}

.build-content > p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.key-cards {
    margin-bottom: 2rem;
}

.key-cards h5 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

.key-cards ul {
    list-style: disc;
    padding-left: 1.5rem;
    margin: 0;
}

.key-cards li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
    color: var(--text-gray);
}

.key-cards li:last-child {
    margin-bottom: 0;
}

.pros-cons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

@media (max-width: 768px) {
    .pros-cons {
        grid-template-columns: 1fr;
    }
}

.pros,
.cons {
    background: rgba(0, 0, 0, 0.02);
    padding: 1.5rem;
    border-radius: var(--border-radius-small);
}

.pros {
    border-left: 3px solid #28a745;
}

.cons {
    border-left: 3px solid #dc3545;
}

.pros h6,
.cons h6 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.pros ul,
.cons ul {
    list-style: disc;
    padding-left: 1.5rem;
    margin: 0;
}

.pros li,
.cons li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
    color: var(--text-gray);
}

.pros li:last-child,
.cons li:last-child {
    margin-bottom: 0;
}

.playstyle {
    background: rgba(255, 215, 0, 0.05);
    padding: 1.5rem;
    border-radius: var(--border-radius-small);
    border-left: 3px solid var(--accent-gold);
    margin-top: 1.5rem;
}

.playstyle h6 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.playstyle p {
    margin: 0;
    color: var(--text-gray);
    line-height: 1.7;
}

/* Build Tips */
.build-tips {
    margin-top: 4rem;
}

.build-tips h3 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 2.5rem;
    font-size: 1.8rem;
}

.decision-tree {
    background: white;
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.decision-step {
    background: rgba(0, 0, 0, 0.02);
    padding: 2rem;
    border-radius: var(--border-radius-small);
    margin-bottom: 1rem;
}

.decision-step h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.decision-step p {
    margin: 0;
    color: var(--text-gray);
    line-height: 1.7;
}

.decision-arrow {
    text-align: center;
    font-size: 1.5rem;
    color: var(--accent-color);
    margin: 1rem 0;
}

/* Responsive Utilities */
@media (max-width: 768px) {
    .nav-menu {
        display: none; /* Needs JS for mobile menu */
    }
    
    .hamburger {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
        flex-direction: column;
    }
    
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .hands-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .boss-patterns,
    .progression-chart,
    .skill-topics,
    .mistakes-grid,
    .build-list {
        grid-template-columns: 1fr;
    }
    
    .chain-step,
    .calc-step {
        padding: 1rem;
    }
    
    .decision-tree {
        padding: 1.5rem;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    h4 { font-size: 1.25rem; }
}

/* Tooltip */
.tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.85rem;
    pointer-events: none;
    z-index: 10000;
    white-space: nowrap;
}

/* Card Effect Popup */
.card-effect-display {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    animation: fadeIn 0.3s ease;
}

.effect-popup {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    min-width: 300px;
    animation: slideUp 0.3s ease;
}

.effect-popup h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.effect-popup button {
    margin-top: 1.5rem;
    padding: 0.5rem 1.5rem;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 20px;
    cursor: pointer;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}