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

:root {
    --primary-color: #e74c3c;
    --primary-dark: #c0392b;
    --secondary-color: #3498db;
    --accent-color: #f39c12;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --white: #ffffff;
    --gray-light: #bdc3c7;
    --gray-dark: #7f8c8d;
    --success-color: #27ae60;
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --max-width: 1200px;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    overflow-x: hidden;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
    line-height: 1;
}

.tagline {
    font-size: 0.85rem;
    color: var(--gray-dark);
    font-weight: 400;
    line-height: 1;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lang-toggle {
    background: none;
    border: 2px solid var(--gray-light);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    white-space: nowrap;
    min-width: 70px;
}

.lang-toggle:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.lang-current {
    color: var(--primary-color);
    font-weight: 600;
}

.lang-alt {
    color: var(--gray-dark);
}

/* Button Styles */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

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

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

.btn-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    box-shadow: var(--shadow);
}

.btn-hero:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-package {
    background: var(--secondary-color);
    color: var(--white);
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    margin-top: 1.5rem;
}

.btn-package:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--light-color) 0%, #ffffff 100%);
    padding: 8rem 0 4rem;
    margin-top: 80px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-dark);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-features {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-color);
    font-weight: 500;
}

.feature i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

/* Phone Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: linear-gradient(135deg, var(--dark-color), #34495e);
    border-radius: 30px;
    padding: 20px;
    box-shadow: var(--shadow-hover);
    position: relative;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 20px;
    padding: 2rem;
    color: var(--white);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.signal-bars {
    display: flex;
    gap: 3px;
    align-items: flex-end;
}

.bar {
    width: 4px;
    background: var(--white);
    border-radius: 2px;
}

.bar:nth-child(1) { height: 8px; }
.bar:nth-child(2) { height: 12px; }
.bar:nth-child(3) { height: 16px; }
.bar:nth-child(4) { height: 20px; }
.bar:nth-child(5) { height: 24px; }

.operator {
    font-weight: 600;
    font-size: 1.1rem;
    text-align: center;
    margin: 2rem 0;
}

.data-usage {
    text-align: center;
}

.data-circle {
    width: 120px;
    height: 120px;
    border: 8px solid rgba(255,255,255,0.3);
    border-top: 8px solid var(--white);
    border-radius: 50%;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    transform: rotate(45deg);
}

.data-circle span {
    transform: rotate(-45deg);
}

/* Packages Section */
.packages {
    padding: 6rem 0;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.section-header p {
    font-size: 1.2rem;
    color: var(--gray-dark);
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.package-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    border: 2px solid transparent;
}

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

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

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

.package-card.premium {
    border-color: var(--accent-color);
}

.popular-badge,
.premium-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--white);
}

.popular-badge {
    background: var(--secondary-color);
}

.premium-badge {
    background: var(--accent-color);
}

.package-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.package-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.package-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: var(--white);
    font-size: 1.5rem;
}

.package-details {
    text-align: center;
    margin-bottom: 2rem;
}

.duration,
.data {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--gray-dark);
    font-weight: 500;
}

.duration i,
.data i {
    color: var(--primary-color);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.3rem;
    margin: 1.5rem 0;
}

.amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.currency {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--gray-dark);
}

.package-features ul {
    list-style: none;
    text-align: center;
}

.package-features li {
    padding: 0.5rem 0;
    color: var(--gray-dark);
    position: relative;
}

.package-features li:before {
    content: "✓";
    color: var(--success-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--light-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--white);
    font-size: 2rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--gray-dark);
    line-height: 1.6;
}

/* How it Works Section */
.how-it-works {
    padding: 6rem 0;
    background: var(--white);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.step {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.step-content p {
    color: var(--gray-dark);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: var(--light-color);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3,
.footer-section h4 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.footer-section h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.footer-section p {
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: var(--light-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1rem;
}

.contact-info i {
    color: var(--primary-color);
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

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

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

/* Responsive Design */
/* Tablet görünümü */
@media (max-width: 1024px) and (min-width: 769px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .nav-actions .btn-primary {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .nav-content {
        /* Mobilde de aynı düzeni koruyoruz */
        flex-direction: row;
        justify-content: space-between;
        gap: 1rem;
    }
    
    .nav-actions .btn-primary {
        /* Mobilde "Abonelikleri Gör" butonunu gizle */
        display: none;
    }
    
    .packages-grid {
        grid-template-columns: 1fr;
    }
    
    .package-card.popular {
        transform: none;
    }
    
    .package-card.popular:hover {
        transform: translateY(-8px);
    }
    
    .hero-features {
        flex-direction: column;
        gap: 1rem;
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
    
    .phone-mockup {
        width: 200px;
        height: 400px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 6rem 0 3rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .tagline {
        font-size: 0.75rem;
    }
    
    .lang-toggle {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
    
    .package-card {
        padding: 1.5rem;
    }
    
    .feature-card {
        padding: 2rem 1.5rem;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    animation: slideInLeft 0.6s ease forwards;
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    animation: slideInRight 0.6s ease forwards;
}

@keyframes slideInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Loading Animation for Package Cards */
.package-card.loading {
    pointer-events: none;
    opacity: 0.7;
}

.package-card.loading .btn-package {
    background: var(--gray-light);
    cursor: not-allowed;
}

/* Success State */
.package-card.success {
    border-color: var(--success-color);
    background: rgba(39, 174, 96, 0.05);
}