/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Flame Theme */
    --flame-red: #FF4500;
    --flame-orange: #FF6B35;
    --flame-yellow: #FFA500;
    --flame-bright: #FFD700;
    --dark-bg: #0a0a0a;
    --dark-surface: #1a1a1a;
    --dark-elevated: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent-gradient: linear-gradient(135deg, var(--flame-red), var(--flame-orange), var(--flame-yellow));
    --flame-glow: 0 0 30px rgba(255, 69, 0, 0.5);

    /* Typography */
    --font-primary: 'Noto Sans JP', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Container */
    --container-max: 1200px;
    --container-padding: 2rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

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

/* Section Styles */
.section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.title-en {
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
}

.title-ja {
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: 0.05em;
}

.section-description {
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(ellipse at bottom, #1a0a00 0%, var(--dark-bg) 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.flame-particle {
    position: absolute;
    bottom: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 69, 0, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(40px);
    animation: flameRise 15s infinite ease-in-out;
}

.flame-particle:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
}

.flame-particle:nth-child(2) {
    left: 50%;
    animation-delay: 5s;
}

.flame-particle:nth-child(3) {
    left: 80%;
    animation-delay: 10s;
}

@keyframes flameRise {
    0% {
        transform: translateY(0) scale(1);
        opacity: 0;
    }
    50% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-100vh) scale(1.5);
        opacity: 0;
    }
}

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

.hero-date {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
    animation: fadeInDown 1s ease-out;
}

.hero-title {
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease-out 0.3s both;
}

.title-main {
    display: block;
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 0 30px rgba(255, 69, 0, 0.5);
}

.title-sub {
    display: block;
    font-size: clamp(0.9rem, 2vw, 1.2rem);
    font-weight: 400;
    letter-spacing: 0.2em;
    color: var(--text-secondary);
}

.hero-tagline {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-cta {
    animation: fadeInUp 1s ease-out 0.9s both;
}

.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    animation: fadeIn 1s ease-out 1.2s both;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--flame-orange), transparent);
    animation: scrollLineMove 2s infinite;
}

@keyframes scrollLineMove {
    0%, 100% {
        transform: translateY(0);
        opacity: 1;
    }
    50% {
        transform: translateY(20px);
        opacity: 0;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--text-primary);
    box-shadow: var(--flame-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 50px rgba(255, 69, 0, 0.8);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--flame-orange);
}

.btn-secondary:hover {
    background: var(--dark-elevated);
    border-color: var(--flame-yellow);
    transform: translateY(-3px);
}

.btn-large {
    padding: 1.2rem 3rem;
    font-size: 1.1rem;
}

.btn-icon {
    font-size: 1.3em;
}

/* Overview Section */
.overview {
    background: var(--dark-surface);
    position: relative;
    overflow: hidden;
}

.flame-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.6;
}

.overview .container {
    position: relative;
    z-index: 1;
}

.overview-content {
    margin-top: var(--spacing-lg);
}

.overview-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.venue-image {
    width: 100%;
    height: auto;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
}

.overview-subtitle {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.overview-text p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.overview-text strong {
    color: var(--text-primary);
    font-weight: 700;
}

.event-info {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--dark-elevated);
    border-left: 4px solid var(--flame-orange);
    border-radius: 8px;
}

.info-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-label {
    font-weight: 700;
    color: var(--flame-orange);
}

.info-value {
    color: var(--text-primary);
}

/* Image Placeholder */
.image-placeholder {
    position: relative;
    width: 100%;
    padding-bottom: 75%;
    background: var(--dark-elevated);
    border-radius: 12px;
    overflow: hidden;
    border: 2px dashed var(--flame-orange);
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-secondary);
    font-size: 1rem;
    text-align: center;
    padding: var(--spacing-sm);
}

/* Program Images */
.program-image {
    width: 100%;
    height: auto;
    border-radius: 12px 12px 0 0;
    object-fit: cover;
    display: block;
    aspect-ratio: 4 / 3;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.2);
}

/* AI Dojo Image */
.dojo-site-image {
    width: 100%;
    height: auto;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
}

/* Value Proposition Image */
.value-photo {
    width: 100%;
    height: auto;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
}

/* Programs Section */
.programs {
    background: var(--dark-bg);
    position: relative;
    overflow: hidden;
}

.blazing-flame-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.7;
}

.programs .container {
    position: relative;
    z-index: 1;
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.program-card {
    background: var(--dark-surface);
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 107, 53, 0.1);
}

.program-card:hover {
    transform: translateY(-8px);
    border-color: var(--flame-orange);
    box-shadow: 0 10px 40px rgba(255, 69, 0, 0.3);
}

.program-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 4rem;
    font-weight: 900;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.3;
    z-index: 1;
}

.program-content {
    padding: var(--spacing-md);
}

.program-title {
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: var(--spacing-xs);
}

.program-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.1em;
}

.program-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.program-link {
    display: inline-block;
    color: var(--flame-orange);
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
}

.program-link:hover {
    color: var(--flame-yellow);
    transform: translateX(5px);
}

.program-highlight {
    padding: var(--spacing-sm);
    background: rgba(255, 69, 0, 0.1);
    border-left: 3px solid var(--flame-orange);
    border-radius: 4px;
    font-size: 0.95rem;
    color: var(--text-primary);
}

/* AI Dojo Section */
.ai-dojo {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a0a00 50%, #0a0a0a 100%);
    position: relative;
    overflow: hidden;
}

.ai-dojo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(255, 107, 53, 0.1) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.ripple-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.dojo-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    position: relative;
    z-index: 2;
}

.dojo-text {
    text-align: left;
}

.dojo-name {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dojo-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.dojo-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.dojo-description strong {
    color: var(--flame-orange);
    font-weight: 700;
}

.dojo-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: var(--dark-surface);
    border-radius: 12px;
    border-left: 4px solid var(--flame-orange);
}

.dojo-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.feature-icon {
    font-size: 1.5rem;
    min-width: 2rem;
}

.feature-text {
    color: var(--text-primary);
    font-size: 1.05rem;
    font-weight: 700;
}

.dojo-release-schedule {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(255, 69, 0, 0.1), rgba(255, 107, 53, 0.05));
    border-radius: 12px;
    border: 1px solid rgba(255, 107, 53, 0.3);
}

.schedule-label {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--flame-orange);
    margin-bottom: var(--spacing-sm);
}

.schedule-list {
    list-style: none;
    padding-left: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.schedule-list li {
    color: var(--text-primary);
    font-size: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.schedule-list li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--flame-orange);
    font-weight: bold;
}

.schedule-list li strong {
    color: var(--flame-bright);
    font-weight: 700;
}

.dojo-cta {
    margin-top: var(--spacing-md);
}

.dojo-image .image-placeholder {
    padding-bottom: 75%;
}

/* Value Proposition Section */
.value-proposition {
    background: var(--dark-surface);
    position: relative;
    overflow: hidden;
}

.sandstorm-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.value-proposition .container {
    position: relative;
    z-index: 1;
}

.value-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.value-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.value-quote {
    font-size: 1.3rem;
    font-style: italic;
    color: var(--text-secondary);
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-md);
    border-left: 4px solid var(--flame-orange);
}

.value-text p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.value-emphasis {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: var(--spacing-md) 0;
}

.value-cta-text {
    font-size: 1.2rem;
    margin-top: var(--spacing-md);
}

.value-cta-text strong {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
}

/* CTA Section */
.cta-section {
    background: radial-gradient(ellipse at center, #1a0a00 0%, var(--dark-bg) 100%);
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.cta-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

/* Organizer Section */
.organizer {
    background: var(--dark-surface);
}

.organizer-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.organizer-image .image-placeholder {
    padding-bottom: 100%;
    border-radius: 50%;
}

.organizer-photo {
    width: 100%;
    height: auto;
    border-radius: 50%;
    object-fit: cover;
    aspect-ratio: 1 / 1;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
}

.organizer-name {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-xs);
}

.organizer-title {
    font-size: 1.2rem;
    color: var(--flame-orange);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.organizer-bio {
    margin-bottom: var(--spacing-md);
}

.organizer-bio p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.organizer-note {
    font-style: italic;
    color: var(--text-secondary);
}

.organizer-message {
    background: var(--dark-elevated);
    padding: var(--spacing-md);
    border-radius: 12px;
    margin: var(--spacing-md) 0;
    border-left: 4px solid var(--flame-orange);
}

.organizer-message h4 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.organizer-message p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.organizer-message strong {
    color: var(--text-primary);
    font-weight: 700;
}

.organizer-social {
    margin-top: var(--spacing-md);
}

.social-link {
    display: inline-block;
    color: var(--flame-orange);
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
}

.social-link:hover {
    color: var(--flame-yellow);
}

/* Footer */
.footer {
    background: var(--dark-bg);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid rgba(255, 107, 53, 0.2);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-logo h3 {
    font-size: 1.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-xs);
}

.footer-logo p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.footer-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 107, 53, 0.1);
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-xs);
}

.footer-hashtag {
    color: var(--flame-orange);
    font-weight: 700;
}

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

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    :root {
        --container-padding: 1.5rem;
        --spacing-xl: 4rem;
        --spacing-lg: 3rem;
    }

    .overview-main,
    .value-content,
    .organizer-content,
    .dojo-content {
        grid-template-columns: 1fr;
    }

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

    .footer-links {
        align-items: center;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --spacing-xl: 3rem;
        --spacing-lg: 2rem;
    }

    .title-ja {
        font-size: 2rem;
    }

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

    .cta-title {
        font-size: 2rem;
    }

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

    .organizer-image {
        max-width: 250px;
        margin: 0 auto;
    }

    .dojo-text {
        text-align: center;
    }

    .dojo-name {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-date {
        font-size: 1rem;
    }

    .info-item {
        grid-template-columns: 1fr;
    }
}
/* test 2025年 11月30日 日曜日 22時10分03秒 JST */