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

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    background: #0a0e27;
    color: #f8fafc;
    overflow-x: hidden;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, #0a1128 0%, #1e1b4b 50%, #312e81 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2rem;
}

.logo {
    font-size: 4rem;
    font-weight: 900;
    background: linear-gradient(135deg, #8b5cf6, #06b6d4, #10b981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
    animation: glow 3s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% { filter: drop-shadow(0 0 20px rgba(139, 92, 246, 0.5)); }
    50% { filter: drop-shadow(0 0 40px rgba(6, 182, 212, 0.8)); }
}

.slogan {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.5s forwards;
}

.slogan-word {
    display: inline-block;
    opacity: 0;
    animation: wordFadeIn 0.5s ease-out forwards;
}

@keyframes wordFadeIn {
    to { opacity: 1; }
}

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

.countdown {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
    opacity: 0;
    animation: fadeInUp 1s ease-out 1s forwards;
}

.countdown-item {
    text-align: center;
}

.countdown-value {
    font-size: 3rem;
    font-weight: 700;
    color: #06b6d4;
}

.countdown-label {
    font-size: 0.9rem;
    color: #94a3b8;
    text-transform: uppercase;
}

.cta-button {
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #8b5cf6, #06b6d4);
    border: none;
    border-radius: 50px;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    animation: pulse 2s ease-in-out infinite;
    margin-top: 1rem;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 20px rgba(139, 92, 246, 0.5); }
    50% { transform: scale(1.05); box-shadow: 0 0 40px rgba(6, 182, 212, 0.8); }
}

.cta-button:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.6);
}

/* Section Styles */
section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, #8b5cf6, #06b6d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* No Limits Section */
.no-limits {
    background: linear-gradient(180deg, #0a0e27 0%, #1e1b4b 100%);
}

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

.limit-card {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(139, 92, 246, 0.3);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.limit-card:hover {
    transform: translateY(-10px);
    border-color: #8b5cf6;
    box-shadow: 0 20px 40px rgba(139, 92, 246, 0.3);
    background: rgba(139, 92, 246, 0.1);
}

.limit-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.limit-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #8b5cf6;
}

.limit-desc {
    color: #cbd5e1;
    line-height: 1.6;
}

/* Timeline Section */
.timeline-section {
    background: linear-gradient(180deg, #1e1b4b 0%, #312e81 100%);
}

.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, #8b5cf6, #06b6d4);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-content {
    width: 45%;
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    border: 2px solid rgba(139, 92, 246, 0.3);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    border-color: #8b5cf6;
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.3);
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: #06b6d4;
    border-radius: 50%;
    border: 4px solid #0a0e27;
    z-index: 2;
}

.timeline-date {
    font-weight: 700;
    color: #06b6d4;
    margin-bottom: 0.5rem;
}

.timeline-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.timeline-duration {
    color: #94a3b8;
    font-size: 0.9rem;
}

/* Submission Section */
.submission-section {
    background: linear-gradient(180deg, #312e81 0%, #1e1b4b 100%);
}

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

.submission-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    border-left: 4px solid #10b981;
}

.submission-card h3 {
    color: #10b981;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.submission-list {
    list-style: none;
    line-height: 2;
}

.submission-list li::before {
    content: '✓ ';
    color: #10b981;
    font-weight: 700;
    margin-right: 0.5rem;
}

/* Criteria Section */
.criteria-section {
    background: linear-gradient(180deg, #1e1b4b 0%, #0a0e27 100%);
}

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

.criteria-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    position: relative;
    overflow: hidden;
}

.criteria-percentage {
    font-size: 3rem;
    font-weight: 900;
    color: #8b5cf6;
    margin-bottom: 1rem;
}

.criteria-name {
    font-size: 1.2rem;
    font-weight: 700;
}

.criteria-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #8b5cf6, #06b6d4);
    transform-origin: left;
}

/* FAQ Section */
.faq-section {
    background: #0a0e27;
}

.faq-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    margin-bottom: 1rem;
    overflow: hidden;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(139, 92, 246, 0.5);
}

.faq-question {
    padding: 1.5rem;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.faq-question::after {
    content: '+';
    font-size: 2rem;
    color: #8b5cf6;
    transition: transform 0.3s ease;
}

.faq-question.active::after {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    color: #cbd5e1;
    line-height: 1.8;
}

.faq-answer.active {
    padding: 1.5rem;
    max-height: 500px;
}

/* Footer CTA */
.footer-cta {
    background: linear-gradient(135deg, #1e1b4b, #312e81);
    text-align: center;
    padding: 6rem 2rem;
}

.footer-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #8b5cf6, #10b981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-cta p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: #cbd5e1;
}

footer {
    background: #0a0e27;
    padding: 3rem 2rem;
    text-align: center;
    color: #94a3b8;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-links a {
    color: #8b5cf6;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #06b6d4;
}

/* Scroll Progress */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, #8b5cf6, #06b6d4, #10b981);
    z-index: 9999;
    transition: width 0.1s ease;
}

/* Responsive */
@media (max-width: 768px) {
    .logo { font-size: 2.5rem; }
    .slogan { font-size: 1.2rem; }
    .countdown { gap: 1rem; }
    .countdown-value { font-size: 2rem; }
    .timeline::before { left: 20px; }
    .timeline-content { width: calc(100% - 60px); margin-left: 60px; }
    .timeline-item:nth-child(even) .timeline-content { margin-left: 60px; }
    .timeline-dot { left: 20px; }
}