/* Cognitive Sovereignty - Premium Cohesive Design System */

/* ===== CSS Variables ===== */
:root {
    /* Primary Colors */
    --primary-blue: #0056b3;
    --primary-dark: #003d82;
    --primary-light: #3d8bfd;
    
    /* Secondary Colors */
    --accent-gold: #ffd700;
    --accent-red: #dc3545;
    --swiss-red: #ff0000;
    
    /* Neutral Colors */
    --text-dark: #212529;
    --text-body: #495057;
    --text-light: #6c757d;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-gray: #e9ecef;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-base: all 0.3s ease;
    --transition-fast: all 0.2s ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

/* ===== Global Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-body);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-dark);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

.highlight {
    color: var(--primary-blue);
    font-weight: var(--font-weight-bold);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: var(--transition-base);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
}

.swiss-flag {
    width: 30px;
    height: 30px;
    background: var(--swiss-red);
    position: relative;
    flex-shrink: 0;
}

.swiss-flag::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 18px;
    height: 6px;
    background: var(--bg-white);
}

.swiss-flag::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 6px;
    height: 18px;
    background: var(--bg-white);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-link {
    color: var(--text-body);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-blue);
}

.btn-sign {
    background: var(--primary-blue);
    color: var(--bg-white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: var(--transition-base);
}

.btn-sign:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* ===== Hero Section ===== */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 100%);
    text-align: center;
    position: relative;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(0, 86, 179, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 50px;
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9rem;
    color: var(--text-light);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 300;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.hero h1 .highlight {
    font-weight: var(--font-weight-bold);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: var(--bg-white);
}

.full-width {
    width: 100%;
}

/* ===== Counter Section ===== */
.counter-section {
    margin-top: var(--spacing-xl);
}

.counter-number {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

/* ===== Section Styles ===== */
section {
    padding: var(--spacing-xxl) 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-md);
    font-weight: 300;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
}

/* ===== Declaration Section ===== */
.declaration {
    background: var(--bg-white);
}

.declaration-box {
    background: var(--bg-light);
    border: 2px solid var(--primary-blue);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.declaration-seal {
    position: absolute;
    top: -30px;
    right: 50px;
    width: 80px;
    height: 80px;
    background: var(--accent-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    box-shadow: var(--shadow-lg);
    font-size: 1.2rem;
}

.declaration-box h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
}

.declaration-box p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.declaration-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-xl);
}

/* ===== Participate Section ===== */
.participate {
    background: var(--bg-light);
}

.initiatives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.initiative-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.initiative-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.initiative-card.featured {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, var(--bg-white) 0%, #f0f7ff 100%);
    border: 2px solid var(--primary-blue);
}

.initiative-badge {
    display: inline-block;
    background: var(--primary-blue);
    color: var(--bg-white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
}

.study-details {
    margin-top: var(--spacing-lg);
}

.study-details h4 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.study-details ul {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.study-details li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: var(--spacing-sm);
}

.study-details li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: var(--font-weight-bold);
}

.learn-more {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
}

.learn-more:hover {
    text-decoration: underline;
}

/* ===== Timeline Section ===== */
.timeline-section {
    background: var(--bg-white);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-blue);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    justify-content: flex-end;
    padding-right: calc(50% + 40px);
}

.timeline-item:nth-child(even) {
    padding-left: calc(50% + 40px);
}

.timeline-date {
    color: var(--primary-blue);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.timeline-content {
    background: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.timeline-item::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: var(--primary-blue);
    border: 4px solid var(--bg-white);
    border-radius: 50%;
}

/* ===== Resources Section ===== */
.resources {
    background: var(--bg-light);
}

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

.resource-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.resource-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.resource-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.resource-card h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
}

.resource-card ul {
    list-style: none;
}

.resource-card li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--bg-gray);
}

.resource-card li:last-child {
    border-bottom: none;
}

.resource-card a {
    color: var(--text-body);
    text-decoration: none;
    transition: var(--transition-fast);
}

.resource-card a:hover {
    color: var(--primary-blue);
}

.coming-soon {
    color: var(--text-light);
    font-style: italic;
}

/* ===== Movement Section ===== */
.movement {
    background: var(--bg-white);
    text-align: center;
}

.movement-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.movement-card {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 100%);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.movement-card:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.movement-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

/* ===== SDG Section ===== */
.sdg-section {
    background: var(--bg-light);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.sdg-badges {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

.sdg-badge {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--bg-white);
    font-weight: var(--font-weight-bold);
    transition: var(--transition-base);
}

.sdg-badge:hover {
    transform: scale(1.1);
}

.sdg-3 { background: #4c9f38; }
.sdg-4 { background: #c5192d; }
.sdg-9 { background: #fd6925; }
.sdg-16 { background: #00689d; }
.sdg-17 { background: #19486a; }

/* ===== Newsletter Section ===== */
.newsletter {
    background: var(--primary-blue);
    color: var(--bg-white);
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.newsletter h2 {
    color: var(--bg-white);
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-md);
    max-width: 500px;
    margin: var(--spacing-xl) auto 0;
}

.newsletter-form input {
    flex: 1;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
}

/* ===== Footer ===== */
.footer {
    background: var(--text-dark);
    color: var(--bg-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-links a {
    color: #adb5bd;
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--bg-white);
}

.footer-contact {
    margin-bottom: var(--spacing-md);
}

.footer-languages {
    color: #adb5bd;
    margin-bottom: var(--spacing-lg);
}

.footer-copyright {
    color: #6c757d;
    font-size: 0.9rem;
}

/* ===== Modal Styles ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.modal-content {
    background: var(--bg-white);
    max-width: 600px;
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    position: relative;
}

.close-modal {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition-fast);
}

.close-modal:hover {
    color: var(--text-dark);
}

.modal h2 {
    margin-bottom: var(--spacing-md);
    color: var(--primary-blue);
}

.modal p {
    margin-bottom: var(--spacing-xl);
    color: var(--text-light);
}

/* ===== Form Styles ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid #dee2e6;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.form-checkbox input {
    margin-top: 0.25rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    /* Typography */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    /* Layout */
    .hero-actions {
        flex-direction: column;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    /* Timeline */
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 50px !important;
        padding-right: 0 !important;
        justify-content: flex-start !important;
    }
    
    .timeline-item::after {
        left: 20px;
    }
    
    /* Grid adjustments */
    .resource-grid,
    .initiatives-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    /* Spacing adjustments */
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* Modal */
    .modal-content {
        margin: var(--spacing-md) auto;
        padding: var(--spacing-lg);
    }
}