/* Beop Jin Do - Way of the Multiplying Paths */
/* Modern Martial Arts Landing Page */

:root {
    --primary-dark: #0a0a0a;
    --primary-dark-2: #1a1a1a;
    --accent-red: #c41e3a;
    --accent-gold: #d4af37;
    --accent-white: #f5f5f5;
    --accent-gray: #8a8a8a;
    --gradient-dark: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0a0a0a 100%);
    --gradient-red: linear-gradient(135deg, #8b0000 0%, #c41e3a 100%);
    --gradient-gold: linear-gradient(135deg, #d4af37 0%, #f4d03f 100%);
    --shadow-glow: 0 0 30px rgba(196, 30, 58, 0.3);
    --shadow-glow-gold: 0 0 30px rgba(212, 175, 55, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Noto Sans JP', sans-serif;
    background: var(--primary-dark);
    color: var(--accent-white);
    line-height: 1.8;
    overflow-x: hidden;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: var(--gradient-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text y="50%" x="50%" dominant-baseline="middle" text-anchor="middle" font-size="80" opacity="0.03">道</text></svg>');
    background-size: 200px;
    background-repeat: repeat;
    opacity: 0.5;
}

.hero-content {
    text-align: center;
    padding: 2rem;
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: clamp(3rem, 10vw, 8rem);
    font-weight: 900;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
    text-shadow: var(--shadow-glow-gold);
}

.hero-subtitle {
    font-size: clamp(1.5rem, 4vw, 3rem);
    font-weight: 300;
    color: var(--accent-red);
    margin-bottom: 2rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

.hero-korean {
    font-size: clamp(2rem, 6vw, 5rem);
    font-weight: 700;
    color: var(--accent-white);
    margin-bottom: 1rem;
    opacity: 0.9;
}

.hero-pronunciation {
    font-size: 1.2rem;
    color: var(--accent-gray);
    font-style: italic;
    margin-bottom: 3rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 3rem;
    background: var(--gradient-red);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-glow);
    border: 2px solid transparent;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 50px rgba(196, 30, 58, 0.5);
    border-color: var(--accent-gold);
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-gold);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--accent-white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-red);
    transition: width 0.3s ease;
}

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

.nav-links a:hover::after {
    width: 100%;
}

/* Section Styles */
section {
    padding: 6rem 2rem;
    position: relative;
}

.section-title {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 4rem;
    color: var(--accent-gold);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 100px;
    height: 3px;
    background: var(--gradient-red);
    margin: 1rem auto;
    border-radius: 2px;
}

/* Philosophy Section */
.philosophy {
    background: var(--primary-dark-2);
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.philosophy-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 15px;
    padding: 2.5rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.philosophy-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.philosophy-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow-gold);
    border-color: var(--accent-gold);
}

.philosophy-card:hover::before {
    transform: scaleX(1);
}

.philosophy-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.philosophy-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 0.5rem;
}

.philosophy-name-japanese {
    font-size: 1.2rem;
    color: var(--accent-red);
    margin-bottom: 1rem;
}

.philosophy-description {
    color: var(--accent-gray);
    line-height: 1.7;
}

/* Belt Progression Section */
.belt-progression {
    background: var(--gradient-dark);
}

.belt-timeline {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.belt-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-red);
    transform: translateX(-50%);
}

.belt-item {
    position: relative;
    margin-bottom: 4rem;
    padding: 0 2rem;
}

.belt-item:nth-child(odd) {
    text-align: right;
    padding-right: calc(50% + 3rem);
    padding-left: 2rem;
}

.belt-item:nth-child(even) {
    text-align: left;
    padding-left: calc(50% + 3rem);
    padding-right: 2rem;
}

.belt-marker {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-dark);
    border: 3px solid var(--accent-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    z-index: 1;
    box-shadow: var(--shadow-glow-gold);
}

.belt-item:nth-child(odd) .belt-marker {
    right: calc(50% - 3rem);
    left: auto;
}

.belt-item:nth-child(even) .belt-marker {
    left: calc(50% - 3rem);
}

.belt-color {
    display: inline-block;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin: 0 auto 1rem;
    border: 2px solid var(--accent-gold);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

.belt-white { background: linear-gradient(135deg, #ffffff, #e0e0e0); }
.belt-green { background: linear-gradient(135deg, #2e7d32, #4caf50); }
.belt-brown { background: linear-gradient(135deg, #5d4037, #8d6e63); }
.belt-red { background: linear-gradient(135deg, #c41e3a, #e53935); }
.belt-black { background: linear-gradient(135deg, #0a0a0a, #1a1a1a); }
.belt-master { background: var(--gradient-gold); }

.belt-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 0.5rem;
}

.belt-concept {
    font-size: 1.2rem;
    color: var(--accent-red);
    margin-bottom: 1rem;
}

.belt-description {
    color: var(--accent-gray);
    line-height: 1.7;
}

.belt-training {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(212, 175, 55, 0.05);
    border-radius: 8px;
    border-left: 3px solid var(--accent-gold);
}

.belt-training h4 {
    color: var(--accent-white);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.belt-training ul {
    list-style: none;
    padding-left: 0;
}

.belt-training li {
    color: var(--accent-gray);
    margin-bottom: 0.3rem;
    padding-left: 1.5rem;
    position: relative;
}

.belt-training li::before {
    content: '•';
    color: var(--accent-gold);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Techniques Section */
.techniques {
    background: var(--primary-dark-2);
}

.techniques-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.technique-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(196, 30, 58, 0.2);
    border-radius: 15px;
    padding: 2.5rem;
    transition: all 0.4s ease;
}

.technique-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent-red);
}

.technique-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 0.5rem;
}

.technique-korean {
    font-size: 1rem;
    color: var(--accent-red);
    margin-bottom: 1rem;
    font-style: italic;
}

.technique-description {
    color: var(--accent-gray);
    line-height: 1.7;
}

/* Kata Section */
.kata {
    background: var(--gradient-dark);
    text-align: center;
}

.kata-content {
    max-width: 800px;
    margin: 0 auto;
}

.kata-description {
    font-size: 1.2rem;
    color: var(--accent-gray);
    margin-bottom: 2rem;
    line-height: 2;
}

.kata-highlight {
    background: rgba(212, 175, 55, 0.05);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 15px;
    padding: 3rem;
    margin-top: 3rem;
}

.kata-highlight h3 {
    color: var(--accent-gold);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.kata-highlight p {
    color: var(--accent-white);
    line-height: 1.8;
}

/* Footer */
footer {
    background: var(--primary-dark);
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
}

.footer-logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 1rem;
}

.footer-text {
    color: var(--accent-gray);
    margin-bottom: 1rem;
}

.footer-kanji {
    font-size: 4rem;
    opacity: 0.1;
    margin-top: 2rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.floating {
    animation: float 3s ease-in-out infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        padding: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .nav-links a {
        font-size: 0.9rem;
    }
    
    .belt-timeline::before {
        left: 20px;
    }
    
    .belt-item {
        padding-left: 4rem !important;
        padding-right: 2rem !important;
        text-align: left !important;
    }
    
    .belt-marker {
        left: 20px !important;
        right: auto !important;
    }
    
    section {
        padding: 4rem 1.5rem;
    }
    
    .philosophy-grid,
    .techniques-grid {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    .nav,
    .cta-button {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .section-title {
        color: black;
    }
    
    .philosophy-card,
    .technique-card {
        page-break-inside: avoid;
        border: 1px solid #ccc;
    }
}