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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
}

a {
    color: #5B4FE9;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #4338CA;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Section Base */
.section {
    padding: 80px 0;
}

.section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    color: #1a1a2e;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #fff;
    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"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></svg>');
    background-size: 100px 100px;
    opacity: 0.5;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0,0,0,0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #e0e7ff;
    font-weight: 500;
}

.hero-tagline {
    font-size: 1rem;
    margin-bottom: 40px;
    color: #94a3b8;
}

.btn-primary {
    display: inline-block;
    padding: 16px 40px;
    background: linear-gradient(135deg, #5B4FE9 0%, #7C3AED 100%);
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(91, 79, 233, 0.4);
    color: #fff;
}

.btn-large {
    padding: 20px 50px;
    font-size: 1.2rem;
}

/* Section Navigation */
.section-nav {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    padding: 20px;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    z-index: 3;
}

.section-nav a {
    color: #fff;
    padding: 12px 24px;
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.section-nav a:hover {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

/* Guidelines Section */
.guidelines-section {
    background: #f8fafc;
}

.guidelines-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.guidelines-box {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.guidelines-list {
    list-style: none;
}

.guidelines-list li {
    padding: 15px 0;
    padding-left: 30px;
    position: relative;
    border-bottom: 1px solid #f1f5f9;
}

.guidelines-list li:last-child {
    border-bottom: none;
}

.guidelines-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

.transparency-box {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    padding: 30px;
    border-radius: 20px;
    border-left: 5px solid #f59e0b;
}

.transparency-box h3 {
    color: #92400e;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.transparency-box p {
    color: #78350f;
    margin-bottom: 10px;
}

/* Challenge Info Section */
.challenge-info-section {
    background: #fff;
}

.challenge-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.challenge-description h3 {
    font-size: 1.8rem;
    color: #1a1a2e;
    margin-bottom: 20px;
}

.challenge-description p {
    margin-bottom: 15px;
    color: #475569;
    font-size: 1.1rem;
}

.what-you-get {
    margin-top: 30px;
    padding: 25px;
    background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
    border-radius: 15px;
}

.what-you-get h4 {
    color: #5B4FE9;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.what-you-get ul {
    list-style: none;
}

.what-you-get li {
    padding: 8px 0;
    font-size: 1rem;
}

.themes-box {
    background: linear-gradient(135deg, #1a1a2e 0%, #0f3460 100%);
    padding: 40px;
    border-radius: 20px;
    color: #fff;
}

.themes-box h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.themes-intro {
    color: #94a3b8;
    margin-bottom: 25px;
}

.themes-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.themes-list li {
    padding: 12px 15px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.themes-list li:hover {
    background: rgba(255,255,255,0.2);
    transform: translateX(5px);
}

/* Inspiration Section */
.inspiration-section {
    background: #f8fafc;
}

.inspiration-subtitle {
    text-align: center;
    color: #64748b;
    max-width: 600px;
    margin: -20px auto 40px;
    font-size: 1.1rem;
}

.inspiration-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.inspiration-card {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.inspiration-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.placeholder-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 1.1rem;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

/* Prize Section */
.prize-section {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
}

.prize-section h2 {
    color: #fff;
}

.prize-subtitle {
    text-align: center;
    color: #94a3b8;
    margin-bottom: 50px;
    font-size: 1.2rem;
}

.prize-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-bottom: 50px;
}

.prize-card {
    background: rgba(255,255,255,0.05);
    padding: 35px 25px;
    border-radius: 20px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s ease;
}

.prize-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-5px);
}

.prize-card.main-prize {
    background: linear-gradient(135deg, #5B4FE9 0%, #7C3AED 100%);
    border: none;
}

.prize-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.prize-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.prize-card.main-prize h3 {
    font-size: 2.5rem;
}

.prize-card p {
    color: #94a3b8;
    font-size: 0.95rem;
}

.prize-card.main-prize p {
    color: #e0e7ff;
}

.prize-dates {
    display: flex;
    justify-content: center;
    gap: 60px;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

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

.date-label {
    display: block;
    color: #94a3b8;
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.date-value {
    font-size: 1.3rem;
    font-weight: 600;
    color: #f59e0b;
}

/* Participate Section */
.participate-section {
    background: #fff;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.step-card {
    text-align: center;
    padding: 40px 30px;
    position: relative;
}

.step-number {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #5B4FE9 0%, #7C3AED 100%);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.step-icon {
    font-size: 3rem;
    margin: 30px 0 20px;
}

.step-card h3 {
    font-size: 1.4rem;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.step-card p {
    color: #64748b;
}

.cta-section {
    text-align: center;
    padding: 40px;
    background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
    border-radius: 25px;
}

.reader-cta {
    margin-top: 20px;
    color: #475569;
}

.reader-cta a {
    font-weight: 600;
}

/* FAQ Section */
.faq-section {
    background: #f8fafc;
}

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

.faq-item {
    background: #fff;
    margin-bottom: 15px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
    width: 100%;
    padding: 25px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fff;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a1a2e;
    cursor: pointer;
    text-align: left;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: #f8fafc;
}

.faq-icon {
    font-size: 1.5rem;
    color: #5B4FE9;
    transition: transform 0.3s ease;
}

.faq-item.open .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 30px 25px;
    color: #475569;
    line-height: 1.7;
}

/* Newsletter Section */
.newsletter-section {
    background: linear-gradient(135deg, #5B4FE9 0%, #7C3AED 100%);
    color: #fff;
    text-align: center;
    padding: 60px 0;
}

.newsletter-section h2 {
    color: #fff;
    font-size: 2rem;
    margin-bottom: 15px;
}

.newsletter-section p {
    color: #e0e7ff;
    margin-bottom: 30px;
}

.newsletter-form {
    display: flex;
    justify-content: center;
    gap: 15px;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 16px 25px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    outline: none;
}

.newsletter-form input:focus {
    box-shadow: 0 0 0 3px rgba(255,255,255,0.3);
}

.newsletter-form .btn-primary {
    background: #1a1a2e;
}

.newsletter-form .btn-primary:hover {
    background: #0f172a;
}

/* Info Box (replaces themes) */
.info-box {
    background: linear-gradient(135deg, #1a1a2e 0%, #0f3460 100%);
    padding: 40px;
    border-radius: 20px;
    color: #fff;
}

.info-box h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #fff;
}

.info-box p {
    color: #cbd5e1;
    margin-bottom: 15px;
    line-height: 1.7;
}

.info-list {
    list-style: none;
    margin: 20px 0;
}

.info-list li {
    padding: 12px 0;
    color: #e2e8f0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.info-list li:last-child {
    border-bottom: none;
}

.info-list strong {
    color: #a5b4fc;
}

.highlight-text {
    margin-top: 25px;
    padding: 20px;
    background: rgba(91, 79, 233, 0.2);
    border-left: 4px solid #5B4FE9;
    border-radius: 8px;
    font-style: italic;
    color: #e0e7ff;
}

/* Why Section */
.why-section {
    background: #f8fafc;
}

.why-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.why-block {
    background: #fff;
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.why-block h3 {
    font-size: 1.6rem;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.why-block p {
    color: #475569;
    line-height: 1.8;
    margin-bottom: 12px;
}

.check-list {
    list-style: none;
    margin-top: 15px;
}

.check-list li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    color: #334155;
}

.check-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
    font-size: 1.2rem;
}

.emphasis {
    margin-top: 20px;
    font-weight: 600;
    color: #5B4FE9;
    font-size: 1.1rem;
}

/* Format Section */
.format-section {
    background: #fff;
}

.format-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.format-main h3 {
    font-size: 1.8rem;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.format-main p {
    color: #475569;
    margin-bottom: 30px;
    line-height: 1.7;
}

.format-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.format-option {
    background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
    padding: 25px;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.format-option:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(91, 79, 233, 0.2);
}

.format-option h4 {
    color: #5B4FE9;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.format-option p {
    color: #64748b;
    font-size: 0.95rem;
    margin: 0;
}

.format-tips {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    padding: 30px;
    border-radius: 20px;
    border-left: 5px solid #f59e0b;
}

.format-tips h3 {
    color: #92400e;
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.tips-list {
    list-style: none;
}

.tips-list li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    color: #78350f;
    line-height: 1.6;
}

.tips-list li::before {
    content: '💡';
    position: absolute;
    left: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .guidelines-content {
        grid-template-columns: 1fr;
    }
    
    .challenge-content {
        grid-template-columns: 1fr;
    }
    
    .prize-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .inspiration-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .format-content {
        grid-template-columns: 1fr;
    }
    
    .format-options {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .section h2 {
        font-size: 2rem;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-nav {
        flex-direction: column;
        align-items: center;
    }
    
    .section-nav a {
        padding: 10px 20px;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .prize-grid {
        grid-template-columns: 1fr;
    }
    
    .inspiration-grid {
        grid-template-columns: 1fr;
    }
    
    .prize-dates {
        flex-direction: column;
        gap: 20px;
    }
    
    .why-block {
        padding: 25px;
    }
    
    .info-box {
        padding: 25px;
    }
    
    .format-tips {
        padding: 20px;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .newsletter-form input,
    .newsletter-form .btn-primary {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .btn-primary {
        padding: 14px 30px;
        font-size: 1rem;
    }
    
    .guidelines-box,
    .themes-box {
        padding: 25px;
    }
}