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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --text: #1f2937;
    --text-light: #6b7280;
    --bg: #ffffff;
    --bg-alt: #f9fafb;
    --border: #e5e7eb;
    --success: #25d366;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--bg);
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

.welcome-bar {
    background: var(--primary);
    color: white;
    text-align: center;
    padding: 10px 20px;
    font-size: 14px;
}

.navbar {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.2s;
}

.nav-menu a:hover {
    color: var(--primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.btn-nav {
    background: var(--success);
    color: white;
    padding: 10px 20px;
}

.btn-nav:hover {
    background: #20bd5a;
}

.btn-primary {
    background: var(--success);
    color: white;
}

.btn-primary:hover {
    background: #20bd5a;
}

.btn-large {
    padding: 16px 32px;
    font-size: 17px;
}

.hero {
    padding: 80px 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
}

.hero-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero h1 {
    font-size: 42px;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text);
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.7;
}

.hero-note {
    margin-top: 15px;
    font-size: 14px;
    color: var(--text-light);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-shape {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--primary) 0%, #60a5fa 100%);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    opacity: 0.9;
}

.section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border);
}

.section h2 {
    font-size: 32px;
    text-align: center;
    margin-bottom: 50px;
    color: var(--text);
}

.section-intro {
    text-align: center;
    max-width: 700px;
    margin: -30px auto 50px;
    color: var(--text-light);
    font-size: 17px;
}

.day-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.day-card {
    text-align: center;
    padding: 30px;
}

.day-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.day-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text);
}

.day-card p {
    color: var(--text-light);
    font-size: 15px;
}

.section-skills {
    background: var(--bg-alt);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.skill-card {
    background: var(--bg);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.skill-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--text);
}

.skill-card p {
    color: var(--text-light);
    font-size: 15px;
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.example-card {
    padding: 30px;
    background: var(--bg-alt);
    border-radius: 12px;
}

.example-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--text);
}

.example-card p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.7;
}

.section-participants {
    background: var(--bg-alt);
}

.participants-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.participant-card {
    background: var(--bg);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border);
}

.participant-avatar {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 600;
    margin: 0 auto 15px;
}

.participant-card h3 {
    font-size: 20px;
    margin-bottom: 5px;
}

.participant-role {
    color: var(--primary);
    font-size: 14px;
    margin-bottom: 15px;
}

.participant-card > p:last-child {
    color: var(--text-light);
    font-size: 15px;
}

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

.faq-item {
    border-bottom: 1px solid var(--border);
}

.faq-question {
    width: 100%;
    padding: 20px 0;
    background: none;
    border: none;
    text-align: left;
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: '+';
    font-size: 24px;
    color: var(--primary);
    transition: transform 0.2s;
}

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

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

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding-bottom: 20px;
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.7;
}

.section-cta {
    background: var(--primary);
    color: white;
    text-align: center;
    border-bottom: none;
}

.section-cta h2 {
    color: white;
}

.section-cta p {
    max-width: 600px;
    margin: 0 auto 30px;
    opacity: 0.9;
    font-size: 17px;
}

.section-cta .btn-primary {
    background: white;
    color: var(--primary);
}

.section-cta .btn-primary:hover {
    background: #f0f0f0;
}

.cta-note {
    margin-top: 20px;
    font-size: 14px;
    opacity: 0.8;
}

.footer {
    background: var(--text);
    color: white;
    padding: 40px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-name {
    font-weight: 600;
    margin-bottom: 5px;
}

.footer-email {
    opacity: 0.7;
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: white;
    opacity: 0.7;
    text-decoration: none;
    font-size: 14px;
    transition: opacity 0.2s;
}

.footer-links a:hover {
    opacity: 1;
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--text);
    color: white;
    padding: 20px;
    z-index: 1000;
    display: none;
}

.cookie-banner.show {
    display: block;
}

.cookie-content {
    max-width: 1140px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.cookie-content p {
    font-size: 14px;
    opacity: 0.9;
}

.btn-cookie {
    background: white;
    color: var(--text);
    white-space: nowrap;
}

@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-visual {
        order: -1;
    }

    .hero-shape {
        max-width: 300px;
    }

    .day-grid,
    .examples-grid,
    .participants-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border);
        gap: 15px;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .btn-nav {
        display: none;
    }

    .hero h1 {
        font-size: 32px;
    }

    .section h2 {
        font-size: 26px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
}