/* Etkinlik Sayfası Stilleri */
/* ================================ */

/* CSS Değişkenleri (Tema) */
:root {
    /* Renkler */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-accent: #eff6ff;
    --border-color: #e2e8f0;
    
    /* Tipografi */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Boşluklar */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Düzen */
    --container-max-width: 1200px;
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Sıfırlama ve Temel Stiller */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

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

/* Sayfa Başlığı */
.site-header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

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

.site-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Hero Bölümü */
.hero-section {
    /* Arka plan görseli ve overlay */
    background: 
        linear-gradient(135deg, rgba(37, 99, 235, 0.85) 0%, rgba(30, 64, 175, 0.9) 100%),
        url('/assets/images/etkinlik/hero-background.jpg') center center / cover no-repeat;
    padding: var(--spacing-3xl) 0;
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background-color: var(--accent-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: white;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

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

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.95);
    font-weight: 500;
}

.meta-item svg {
    color: white;
}

.meta-icon {
    flex-shrink: 0;
}

.meta-text {
    font-size: var(--font-size-base);
}

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

/* Butonlar */
.cta-button {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
    font-size: var(--font-size-base);
}

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

.cta-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-secondary {
    background-color: transparent;
    color: white;
    border-color: white;
}

.cta-secondary:hover {
    background-color: white;
    color: var(--primary-color);
}

.cta-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

/* Hakkında Bölümü */
.about-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-primary);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.highlights-grid {
    display: grid;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: transform 0.3s ease;
}

.highlight-item:hover {
    transform: translateX(8px);
}

.highlight-icon {
    flex-shrink: 0;
    color: var(--primary-color);
}

.highlight-text {
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

/* Konuşmacılar Bölümü */
.speakers-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-secondary);
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.speaker-card {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.speaker-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.speaker-image {
    width: 100%;
    height: 320px;
    object-fit: cover;
    display: block;
}

.speaker-info {
    padding: var(--spacing-lg);
    text-align: center;
}

.speaker-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.speaker-title {
    font-size: var(--font-size-base);
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.speaker-affiliation {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Program Bölümü */
.program-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-primary);
}

.program-timeline {
    max-width: 900px;
    margin: var(--spacing-xl) auto 0;
    position: relative;
}

.program-timeline::before {
    content: '';
    position: absolute;
    left: 140px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--border-color);
}

.program-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.program-item::before {
    content: '';
    position: absolute;
    left: 134px;
    top: 8px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--primary-color);
    border: 3px solid var(--bg-primary);
    z-index: 1;
}

.program-time {
    font-weight: 700;
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    text-align: right;
    padding-top: var(--spacing-xs);
}

.program-content {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.program-session-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.program-speakers {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.program-note {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    font-style: italic;
}

/* Başvuru Bölümü */
.cta-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.cta-text {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    line-height: 1.6;
}

.cta-section .cta-button {
    background-color: white;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.cta-section .cta-button:hover {
    background-color: var(--bg-secondary);
    transform: translateY(-2px);
}

.cta-deadline {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    font-weight: 600;
}

/* Sayfa Altlığı */
.site-footer {
    background-color: var(--text-primary);
    color: var(--text-light);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-text {
    font-size: var(--font-size-sm);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: white;
}

/* Responsive Tasarım */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.25rem;
    }
    
    .hero-section {
        padding: var(--spacing-2xl) 0;
    }
    
    .event-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .speakers-grid {
        grid-template-columns: 1fr;
    }
    
    .program-timeline::before {
        left: 80px;
    }
    
    .program-item {
        grid-template-columns: 70px 1fr;
        gap: var(--spacing-md);
    }
    
    .program-item::before {
        left: 74px;
    }
    
    .program-time {
        font-size: var(--font-size-base);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-button {
        width: 100%;
        text-align: center;
    }
}