/* ===================================
   TV Yalova - Modern Media Website
   Dark/Light Mode Support
   =================================== */

/* CSS Variables - Light Theme (Default) */
:root {
    /* Colors */
    --primary: #4a6cff;
    --primary-dark: #c1121f;
    --primary-light: #ff6b6b;
    --secondary: #1d3557;
    --accent: #f77f00;

    /* Light Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --card-bg: #ffffff;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --header-bg: rgba(255, 255, 255, 0.95);
    --hero-overlay: linear-gradient(135deg, rgba(29, 53, 87, 0.9) 0%, rgba(55, 80, 171, 0.8) 100%);

    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --container-max: 1280px;
    --section-padding: 80px;
    --card-radius: 16px;
    --btn-radius: 12px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #f0f6fc;
    --text-secondary: #c9d1d9;
    --text-muted: #8b949e;
    --border-color: #30363d;
    --card-bg: #161b22;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --header-bg: rgba(13, 17, 23, 0.95);
    --hero-overlay: linear-gradient(135deg, rgba(13, 17, 23, 0.95) 0%, rgba(5, 9, 83, 0.7) 100%);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

/* ===================================
   Container
   =================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: var(--btn-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn svg {
    width: 18px;
    height: 18px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(230, 57, 70, 0.4);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline:hover {
    background: white;
    color: var(--secondary);
}

.btn-instagram {
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
    color: white;
}

.btn-instagram:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(225, 48, 108, 0.4);
}

.btn-payment {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: white;
}

.btn-payment:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(56, 239, 125, 0.4);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* ===================================
   Header & Navigation
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--header-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-fast);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--primary);
    color: white;
}

.theme-toggle svg {
    width: 22px;
    height: 22px;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.theme-toggle:hover svg {
    color: white;
}

.sun-icon { display: none; }
.moon-icon { display: block; }

[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    z-index: 999;
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-normal);
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-nav-links a {
    display: block;
    padding: 12px 16px;
    font-weight: 500;
    color: var(--text-primary);
    border-radius: var(--btn-radius);
    transition: all var(--transition-fast);
}

.mobile-nav-links a:hover {
    background: var(--bg-secondary);
    color: var(--primary);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('https://images.unsplash.com/photo-1478720568477-152d9b164e26?w=1920&q=80') center/cover no-repeat;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: var(--hero-overlay);
    transition: background var(--transition-normal);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    padding: 20px;
}

.hero-logo {
    margin-bottom: 24px;
}

.hero-logo svg {
    width: 120px;
    height: 120px;
    color: white;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    margin-bottom: 16px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-slogan {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 400;
    opacity: 0.9;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: white;
    opacity: 0.7;
    animation: bounce 2s ease-in-out infinite;
}

.hero-scroll svg {
    width: 24px;
    height: 24px;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ===================================
   News Ticker
   =================================== */
.ticker {
    display: flex;
    background: var(--primary);
    color: white;
    overflow: hidden;
    padding: 5px 14px;   

}

.ticker-label {
    padding: 0px 14px;   
    background: var(--primary-dark);
    font-weight: 900;
    white-space: nowrap;
    z-index: 1;
}

.ticker-wrapper {
    flex: 1;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.ticker-content {
    display: flex;
    gap: 60px;
    animation: ticker 30s linear infinite;
    white-space: nowrap;
    padding-left: 100%;
}

.ticker-content span {
    flex-shrink: 0;
}

@keyframes ticker {
    0% { transform: translateX(0); }
    100% { transform: translateX(-100%); }
}

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

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: clamp(2rem, 5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 12px;
}

.section-title svg {
    width: 36px;
    height: 36px;
    color: var(--primary);
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* ===================================
   News Section
   =================================== */
.news-section {
    background: var(--bg-secondary);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    background: var(--card-bg);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all var(--transition-normal);
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.news-card.featured {
    grid-column: span 2;
    grid-row: span 2;
}

.news-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
}

.news-card.featured .news-image {
    aspect-ratio: 16/10;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--primary);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.news-content {
    padding: 20px;
}

.news-card.featured .news-content {
    padding: 28px;
}

.news-category {
    display: inline-block;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card.featured .news-title {
    font-size: 1.6rem;
    -webkit-line-clamp: 3;
}

.news-excerpt {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card.featured .news-excerpt {
    -webkit-line-clamp: 3;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 16px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.news-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.news-meta svg {
    width: 16px;
    height: 16px;
}

/* ===================================
   Instagram Section
   =================================== */
.instagram-section {
    background: var(--bg-primary);
}

.instagram-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
    margin-bottom: 32px;
}

.instagram-post {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
}

.instagram-post img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.instagram-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.instagram-post:hover .instagram-overlay {
    opacity: 1;
}

.instagram-post:hover img {
    transform: scale(1.1);
}

.instagram-stats {
    display: flex;
    gap: 16px;
    color: white;
    font-weight: 600;
}

.instagram-cta {
    text-align: center;
}

/* ===================================
   Packages Section
   =================================== */
.packages-section {
    background: var(--bg-secondary);
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.package-card {
    position: relative;
    background: var(--card-bg);
    border-radius: var(--card-radius);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.package-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
}

.package-card.popular {
    border-color: var(--primary);
    transform: scale(1.05);
}

.package-card.popular:hover {
    transform: scale(1.05) translateY(-8px);
}

.package-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
}

.package-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: 50%;
}

.package-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.package-name {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.package-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 24px;
}

.package-features {
    text-align: left;
    margin-bottom: 24px;
}

.package-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.package-features li:last-child {
    border-bottom: none;
}

.package-features svg {
    width: 18px;
    height: 18px;
    color: #22c55e;
    flex-shrink: 0;
}

.package-duration {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.package-duration svg {
    width: 18px;
    height: 18px;
}

/* ===================================
   Durations Section
   =================================== */
.durations-section {
    background: var(--secondary);
    padding: 40px 0;
}

.durations-grid {
    display: flex;
    justify-content: center;
    gap: 80px;
}

.duration-item {
    text-align: center;
    color: white;
}

.duration-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.duration-icon svg {
    width: 28px;
    height: 28px;
}

.duration-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.duration-item p {
    opacity: 0.8;
    font-size: 0.95rem;
}

/* ===================================
   Contact Section
   =================================== */
.contact-section {
    background: var(--bg-primary);
}

.contact-content {
    display: flex;
    justify-content: center;
}

.contact-card {
    background: var(--card-bg);
    border-radius: var(--card-radius);
    padding: 48px;
    text-align: center;
    box-shadow: var(--card-shadow);
    max-width: 500px;
    width: 100%;
}

.contact-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
    border-radius: 50%;
}

.contact-icon svg {
    width: 36px;
    height: 36px;
    color: white;
}

.contact-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.contact-card p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* ===================================
   Payment Section
   =================================== */
.payment-section {
    background: var(--bg-secondary);
}

.payment-content {
    display: flex;
    justify-content: center;
}

.payment-card {
    background: var(--card-bg);
    border-radius: var(--card-radius);
    padding: 48px;
    text-align: center;
    box-shadow: var(--card-shadow);
    max-width: 600px;
    width: 100%;
}

.payment-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #11998e, #38ef7d);
    border-radius: 50%;
}

.payment-icon svg {
    width: 36px;
    height: 36px;
    color: white;
}

.payment-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.payment-card > p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

.payment-logos {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
}

.payment-logo {
    background: var(--bg-tertiary);
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.payment-note {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 16px;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--bg-tertiary);
    padding: 60px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-slogan {
    color: var(--text-muted);
}

.footer-links h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-social h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--bg-secondary);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary);
    color: white;
}

.social-links svg {
    width: 22px;
    height: 22px;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablets */
@media (max-width: 1024px) {
    .packages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .package-card.popular {
        transform: none;
    }

    .package-card.popular:hover {
        transform: translateY(-8px);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .news-card.featured {
        grid-column: span 2;
        grid-row: span 1;
    }

    .instagram-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Mobile Devices */
@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    .nav-links, .nav-actions .btn {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }

    .nav-actions {
        gap: 8px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

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

    .news-card.featured {
        grid-column: span 1;
    }

    .instagram-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .packages-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .durations-grid {
        gap: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --section-padding: 48px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-slogan {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .package-card {
        padding: 24px 20px;
    }

    .durations-grid {
        flex-direction: column;
        gap: 24px;
    }

    .contact-card, .payment-card {
        padding: 32px 20px;
    }

    .payment-logos {
        flex-wrap: wrap;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .ticker-content {
        animation: none;
    }
}

/* Print Styles */
@media print {
    .header, .mobile-menu, .hero-scroll, .ticker, .btn {
        display: none !important;
    }

    .hero {
        min-height: auto;
        padding: 40px 0;
    }

    section {
        padding: 20px 0;
    }
}