/* ===== CSS Variables - Pop & Vibrant Theme ===== */
:root {
    /* Pop & Colorful Palette */
    --color-primary: #ff6b9d;
    /* ビビッドピンク */
    --color-secondary: #7c3aed;
    /* バイオレット */
    --color-accent: #10b981;
    /* エメラルドグリーン */
    --color-warning: #f59e0b;
    /* オレンジイエロー */
    --color-info: #3b82f6;
    /* スカイブルー */

    --color-bg-light: #fef7ff;
    /* 薄いピンクホワイト */
    --color-bg-dark: #1e1b4b;
    /* ディープパープル */
    --color-bg-gradient-1: #667eea;
    --color-bg-gradient-2: #764ba2;

    --color-text-dark: #1f2937;
    --color-text-light: #ffffff;
    --color-text-muted: #6b7280;

    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Noto Sans JP', sans-serif;
    --font-jp-serif: 'Shippori Mincho', serif;

    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;

    --shadow-pop: 0 10px 40px rgba(124, 58, 237, 0.3);
    --shadow-glow: 0 0 30px rgba(255, 107, 157, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg-light);
    color: var(--color-text-dark);
    line-height: 1.8;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Animated Background ===== */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% center;
    }

    100% {
        background-position: 200% center;
    }
}

@keyframes rainbow {
    0% {
        filter: hue-rotate(0deg);
    }

    100% {
        filter: hue-rotate(360deg);
    }
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.95) 0%, rgba(255, 107, 157, 0.95) 100%);
    backdrop-filter: blur(10px);
    padding: 16px 0;
    transition: var(--transition-medium);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--color-text-light);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-menu a {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--color-text-light);
    padding: 8px 16px;
    border-radius: 50px;
    transition: var(--transition-medium);
}

.nav-menu a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.3;
    mix-blend-mode: overlay;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg,
            rgba(124, 58, 237, 0.5) 0%,
            rgba(255, 107, 157, 0.5) 50%,
            rgba(16, 185, 129, 0.5) 100%);
}

/* Floating circles decoration */
.hero::before,
.hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.hero::before {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 107, 157, 0.4) 0%, transparent 70%);
    top: 10%;
    left: -100px;
    animation-delay: 0s;
}

.hero::after {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.4) 0%, transparent 70%);
    bottom: -100px;
    right: -100px;
    animation-delay: 2s;
}

.hero-content {
    position: relative;
    z-index: 10;
    padding: 0 24px;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 8px;
    color: var(--color-text-light);
    margin-bottom: 24px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-title {
    margin-bottom: 32px;
}

.title-jp {
    display: block;
    font-family: var(--font-jp-serif);
    font-size: clamp(3rem, 10vw, 7rem);
    font-weight: 700;
    color: var(--color-text-light);
    letter-spacing: 20px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3),
        0 0 60px rgba(255, 107, 157, 0.5);
    margin-bottom: 8px;
}

.title-en {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 5vw, 3.5rem);
    font-weight: 900;
    letter-spacing: 10px;
    margin-bottom: 12px;
    background: linear-gradient(90deg, #fff, #ffd700, #ff6b9d, #7c3aed, #fff);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

.title-year {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    font-weight: 700;
    color: var(--color-text-light);
    letter-spacing: 10px;
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 24px;
    border-radius: 50px;
    backdrop-filter: blur(5px);
}

.hero-tagline {
    font-family: var(--font-jp-serif);
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--color-text-light);
    margin-bottom: 40px;
    letter-spacing: 5px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-dates {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 50px;
    padding: 16px 40px;
    margin-bottom: 40px;
    backdrop-filter: blur(10px);
    animation: pulse 2s ease-in-out infinite;
}

.date-label {
    font-size: 0.9rem;
    color: var(--color-text-light);
    font-weight: 600;
}

.date-value {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 800;
    color: #ffd700;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, #ff6b9d 0%, #7c3aed 50%, #3b82f6 100%);
    background-size: 200% 200%;
    color: var(--color-text-light);
    font-weight: 800;
    font-size: 1.1rem;
    padding: 20px 60px;
    border-radius: 50px;
    letter-spacing: 3px;
    transition: var(--transition-medium);
    box-shadow: var(--shadow-pop);
    animation: gradientShift 3s ease infinite;
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 15px 50px rgba(124, 58, 237, 0.5);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-light);
    animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator span {
    font-size: 0.8rem;
    letter-spacing: 4px;
    font-weight: 600;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 3px solid currentColor;
    border-bottom: 3px solid currentColor;
    transform: rotate(45deg);
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(15px);
    }
}

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

.title-jp-small {
    display: block;
    font-family: var(--font-jp-serif);
    font-size: 1rem;
    letter-spacing: 8px;
    color: var(--color-secondary);
    margin-bottom: 8px;
    font-weight: 600;
}

.title-en-small {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 900;
    letter-spacing: 4px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title.dark .title-en-small {
    background: linear-gradient(135deg, #ffd700 0%, #ff6b9d 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title.dark .title-jp-small {
    color: rgba(255, 255, 255, 0.7);
}

/* ===== About Section ===== */
.about {
    background: linear-gradient(180deg, var(--color-bg-light) 0%, #f3e8ff 100%);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 107, 157, 0.15) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    border-radius: 50%;
}

.about-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
    position: relative;
    z-index: 2;
}

.about-lead {
    font-size: 1.3rem;
    font-weight: 600;
    line-height: 2.2;
    margin-bottom: 24px;
    color: var(--color-text-dark);
}

.about-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    line-height: 2;
}

.theme-box {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    color: var(--color-text-light);
    text-align: center;
    padding: 56px;
    border-radius: 24px;
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-pop);
}

.theme-box::before {
    content: '🎬';
    position: absolute;
    font-size: 120px;
    opacity: 0.1;
    top: -20px;
    right: -20px;
}

.theme-label {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    letter-spacing: 4px;
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 20px;
    border-radius: 50px;
    margin-bottom: 20px;
}

.theme-title {
    font-family: var(--font-jp-serif);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.theme-concept {
    font-family: var(--font-jp-serif);
    font-size: 1.1rem;
    color: #ffd700;
    letter-spacing: 3px;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

/* ===== Organizers Section ===== */
.organizers {
    background: linear-gradient(180deg, #f3e8ff 0%, #fdf4ff 100%);
    padding: 100px 0;
}

.organizers-grid {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.organizer-card {
    text-align: center;
    padding: 40px;
    background: white;
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(124, 58, 237, 0.1);
    transition: var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.organizer-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}

.organizer-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(124, 58, 237, 0.2);
}

.organizer-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--color-text-light);
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    padding: 8px 20px;
    border-radius: 50px;
}

.organizer-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid transparent;
    background: linear-gradient(white, white) padding-box,
        linear-gradient(135deg, var(--color-primary), var(--color-secondary)) border-box;
    box-shadow: 0 8px 30px rgba(124, 58, 237, 0.2);
}

.organizer-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.organizer-name {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text-dark);
}

.organizer-twitter {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-info));
    color: var(--color-text-light);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition-medium);
}

.organizer-twitter:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(59, 130, 246, 0.4);
}

/* ===== Schedule Section ===== */
.schedule {
    background: linear-gradient(135deg, var(--color-secondary) 0%, #4f46e5 50%, var(--color-info) 100%);
    color: var(--color-text-light);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.schedule::before {
    content: '📅';
    position: absolute;
    font-size: 300px;
    opacity: 0.05;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.schedule .title-jp-small {
    color: rgba(255, 255, 255, 0.7);
}

.schedule .title-en-small {
    background: linear-gradient(135deg, #ffd700 0%, #ff6b9d 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.timeline {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.timeline-item {
    text-align: center;
    position: relative;
    background: rgba(255, 255, 255, 0.1);
    padding: 32px 40px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-medium);
}

.timeline-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.timeline-item:not(:last-child)::after {
    content: '→';
    position: absolute;
    right: -40px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2rem;
    color: #ffd700;
}

.timeline-date {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 900;
    color: #ffd700;
    margin-bottom: 16px;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
}

.timeline-content h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 0.95rem;
    opacity: 0.8;
}

/* ===== Prizes Section ===== */
.prizes {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #1e1b4b 100%);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.prizes::before,
.prizes::after {
    content: '';
    position: absolute;
    border-radius: 50%;
}

.prizes::before {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 107, 157, 0.2) 0%, transparent 70%);
    top: -100px;
    left: -100px;
}

.prizes::after {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, transparent 70%);
    bottom: -150px;
    right: -150px;
}

.prizes-grid {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 32px;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.prize-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 24px;
    padding: 48px 40px;
    text-align: center;
    position: relative;
    border: 2px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-medium);
    color: var(--color-text-light);
    backdrop-filter: blur(10px);
}

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

.prize-card.first {
    padding: 64px 56px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2) 0%, rgba(255, 107, 157, 0.2) 100%);
    border: 3px solid #ffd700;
    order: 2;
    box-shadow: 0 0 50px rgba(255, 215, 0, 0.3);
}

.prize-card.second {
    order: 1;
}

.prize-card.third {
    order: 3;
}

.prize-badge {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: float 3s ease-in-out infinite;
}

.prize-rank {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 900;
    background: linear-gradient(135deg, #ffd700, #ff6b9d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.prize-name {
    font-size: 1.1rem;
    opacity: 0.8;
    margin-bottom: 20px;
}

.prize-value {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 900;
    color: #ffd700;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
}

.prize-unit {
    font-size: 1rem;
    font-weight: 500;
    opacity: 0.8;
    margin-left: 8px;
    color: var(--color-text-light);
}

.prize-count {
    font-size: 0.95rem;
    color: #ffd700;
    margin-bottom: 16px;
    padding: 6px 16px;
    background: rgba(255, 215, 0, 0.2);
    border-radius: 50px;
    display: inline-block;
}

.judging-criteria {
    margin-top: 80px;
    text-align: center;
    padding: 48px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 24px;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 2;
}

.judging-criteria h3 {
    font-size: 1.5rem;
    background: linear-gradient(135deg, #ffd700, #ff6b9d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.judging-criteria p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    line-height: 1.8;
}

.judging-criteria h4 {
    font-size: 1.2rem;
    color: var(--color-primary);
    margin: 24px 0 16px;
}

.criteria-list {
    text-align: left;
    max-width: 520px;
    margin: 0 auto;
}

.criteria-list li {
    color: rgba(255, 255, 255, 0.9);
    padding: 10px 0;
    padding-left: 28px;
    position: relative;
}

.criteria-list li::before {
    content: "✨";
    position: absolute;
    left: 0;
}

.criteria-note {
    font-size: 0.9rem !important;
    opacity: 0.7;
    margin-top: 20px;
}

.copyright-box {
    margin-top: 48px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.copyright-item {
    background: white;
    border-radius: 16px;
    padding: 28px;
    border-left: 5px solid;
    border-image: linear-gradient(to bottom, var(--color-primary), var(--color-secondary)) 1;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.copyright-item h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 12px;
}

.copyright-item p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-text-dark);
}

.copyright-note {
    font-size: 0.85rem !important;
    color: var(--color-text-muted) !important;
    margin-top: 12px;
}

/* ===== Follow Requirement ===== */
.follow-requirement {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.15) 0%, rgba(255, 107, 157, 0.15) 100%);
    border: 2px solid;
    border-image: linear-gradient(135deg, var(--color-primary), var(--color-secondary)) 1;
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 48px;
    text-align: center;
    backdrop-filter: blur(5px);
}

.follow-requirement h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
    color: var(--color-secondary);
}

.follow-requirement p {
    color: var(--color-text-dark);
    margin-bottom: 24px;
}

.follow-accounts {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.follow-btn {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-info));
    color: var(--color-text-light);
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition-medium);
    box-shadow: 0 5px 20px rgba(124, 58, 237, 0.3);
}

.follow-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 30px rgba(124, 58, 237, 0.4);
}

.credit-requirement {
    margin-top: 24px;
    padding: 16px 24px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(255, 107, 157, 0.2) 100%);
    border: 2px solid var(--color-warning);
    border-radius: 12px;
    color: #b45309;
    font-weight: 700;
}

/* ===== Guidelines Section ===== */
.guidelines {
    background: linear-gradient(180deg, var(--color-bg-light) 0%, #fdf4ff 100%);
    padding: 120px 0;
}

.guideline-block {
    background: white;
    border-radius: 20px;
    padding: 48px;
    margin-bottom: 32px;
    box-shadow: 0 10px 40px rgba(124, 58, 237, 0.08);
    border-left: 5px solid;
    border-image: linear-gradient(to bottom, var(--color-primary), var(--color-secondary)) 1;
    transition: var(--transition-medium);
}

.guideline-block:hover {
    transform: translateX(5px);
    box-shadow: 0 15px 50px rgba(124, 58, 237, 0.12);
}

.guideline-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-secondary);
}

.guideline-text {
    color: var(--color-text-muted);
    margin-bottom: 24px;
    font-size: 1.05rem;
}

.material-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-text-light);
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 700;
    transition: var(--transition-medium);
    box-shadow: 0 5px 20px rgba(255, 107, 157, 0.3);
}

.material-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 107, 157, 0.4);
}

.material-link .arrow {
    font-size: 1.3rem;
    transition: transform var(--transition-fast);
}

.material-link:hover .arrow {
    transform: translateX(5px);
}

.requirements-list {
    display: grid;
    gap: 16px;
}

.requirements-list li {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.03) 0%, rgba(255, 107, 157, 0.03) 100%);
    border-radius: 12px;
    transition: var(--transition-medium);
}

.requirements-list li:hover {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.08) 0%, rgba(255, 107, 157, 0.08) 100%);
    transform: translateX(5px);
}

.req-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.req-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-dark);
}

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

.sponsor-box {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    color: var(--color-text-light);
    border-radius: 24px;
    padding: 48px;
    text-align: center;
    margin-top: 48px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-pop);
}

.sponsor-box::before {
    content: '🚀';
    position: absolute;
    font-size: 100px;
    opacity: 0.1;
    top: -10px;
    right: -10px;
}

.sponsor-label {
    display: inline-block;
    font-size: 0.85rem;
    letter-spacing: 3px;
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 20px;
    border-radius: 50px;
    margin-bottom: 20px;
}

.sponsor-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 2rem;
    font-weight: 900;
    color: var(--color-text-light);
    margin-bottom: 24px;
    transition: var(--transition-medium);
}

.sponsor-link:hover {
    transform: scale(1.05);
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.5);
}

.sponsor-arrow {
    font-size: 1.5rem;
}

.credit-info {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    padding: 24px;
    margin: 24px 0;
    backdrop-filter: blur(5px);
}

.credit-info p {
    margin-bottom: 16px;
}

.btn-register {
    display: inline-block;
    background: #ffd700;
    color: var(--color-text-dark);
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 700;
    transition: var(--transition-medium);
    box-shadow: 0 5px 20px rgba(255, 215, 0, 0.4);
}

.btn-register:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.5);
}

.sponsor-twitter {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-text-light);
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition-medium);
}

.sponsor-twitter:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ===== Entry Section ===== */
.entry {
    background: linear-gradient(135deg, var(--color-bg-gradient-1) 0%, var(--color-bg-gradient-2) 100%);
    color: var(--color-text-light);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.entry::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.entry .title-jp-small {
    color: rgba(255, 255, 255, 0.7);
}

.entry .title-en-small {
    background: linear-gradient(135deg, #ffd700 0%, #ff6b9d 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.entry-content {
    position: relative;
    z-index: 2;
}

.entry-description {
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: 48px;
    opacity: 0.9;
}

.entry-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 48px;
}

.step-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.step {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-medium);
    min-height: 220px;
}

.step:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
}

.step-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 900;
    color: #ffd700;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
    line-height: 1;
    margin-bottom: 12px;
}

.step-content {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.step-content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    min-height: 2.2em;
}

.step-content p {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 12px;
    flex: 1;
}

.btn-step-register {
    display: inline-block;
    background: #ffd700;
    color: var(--color-text-dark);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 700;
    transition: var(--transition-medium);
}

.btn-step-register:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(255, 215, 0, 0.4);
}

.step-hashtags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.hashtag {
    background: rgba(255, 215, 0, 0.2);
    color: #ffd700;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

.form-explanation {
    margin-top: 48px;
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.form-explanation p {
    font-size: 1.05rem;
    line-height: 1.8;
}

.form-info {
    margin-top: 20px;
    margin-bottom: 16px;
    font-weight: 600;
    color: #ffd700;
}

.form-items {
    display: inline-block;
    text-align: left;
}

.form-items li {
    padding: 6px 0;
    padding-left: 24px;
    position: relative;
}

.form-items li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: #ffd700;
}

/* ===== Notes Section ===== */
.notes {
    background: linear-gradient(180deg, #fdf4ff 0%, var(--color-bg-light) 100%);
    padding: 80px 0;
}

.section-title-small {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 32px;
    text-align: center;
}

.notes-list {
    max-width: 800px;
    margin: 0 auto;
}

.notes-list li {
    padding: 16px 0;
    padding-left: 32px;
    position: relative;
    color: var(--color-text-muted);
    border-bottom: 1px solid rgba(124, 58, 237, 0.1);
}

.notes-list li::before {
    content: "⚠";
    position: absolute;
    left: 0;
    color: var(--color-warning);
}

/* ===== Footer ===== */
.footer {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
    color: var(--color-text-light);
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 107, 157, 0.1) 0%, transparent 70%);
    bottom: -200px;
    left: -100px;
    border-radius: 50%;
}

.footer-content {
    text-align: center;
    margin-bottom: 48px;
    position: relative;
    z-index: 2;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--color-primary), #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-tagline {
    font-family: var(--font-jp-serif);
    font-size: 1.1rem;
    letter-spacing: 4px;
    opacity: 0.7;
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 2;
}

.footer-bottom p {
    font-size: 0.9rem;
    opacity: 0.6;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hero-subtitle {
        font-size: 1rem;
        letter-spacing: 4px;
    }

    .title-jp {
        letter-spacing: 10px;
    }

    .title-en {
        letter-spacing: 4px;
    }

    .hero-dates {
        flex-direction: column;
        gap: 8px;
        padding: 16px 32px;
    }

    .btn-primary {
        padding: 16px 40px;
        font-size: 1rem;
    }

    .timeline {
        flex-direction: column;
        gap: 24px;
    }

    .timeline-item:not(:last-child)::after {
        content: '↓';
        position: absolute;
        bottom: -24px;
        left: 50%;
        right: auto;
        top: auto;
        transform: translateX(-50%);
    }

    .prizes-grid {
        flex-direction: column;
        align-items: stretch;
    }

    .prize-card.first,
    .prize-card.second,
    .prize-card.third {
        order: unset;
    }

    .copyright-box {
        grid-template-columns: 1fr;
    }

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

    .step {
        text-align: center;
        min-height: auto;
    }

    .follow-accounts {
        flex-direction: column;
    }
}

/* ===== Animations on Scroll ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.about,
.organizers,
.schedule,
.prizes,
.guidelines,
.entry,
.notes {
    animation: fadeInUp 0.8s ease-out;
}