/* 
 * Lotus Veteriner Kliniği - Ana Stil Dosyası
 * Premium, kurumsal ve modern tasarım
 */

/* ========================================
   CSS Variables / Renk Paleti
======================================== */
:root {
    --primary: #0D9488;
    --primary-dark: #0F766E;
    --primary-light: #14B8A6;
    --secondary: #059669;
    --accent: #06B6D4;
    --dark: #1E293B;
    --dark-light: #334155;
    --light: #F8FAFC;
    --white: #FFFFFF;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

/* ========================================
   Navigation Styles
======================================== */
.nav-link {
    display: flex;
    align-items: center;
    padding: 0.625rem 1rem;
    color: var(--dark);
    font-weight: 500;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
    text-decoration: none;
}

.nav-link:hover {
    color: var(--primary);
    background-color: var(--primary);
    background-color: rgba(13, 148, 136, 0.08);
}

.nav-link.aktif {
    color: var(--primary);
    background-color: rgba(13, 148, 136, 0.12);
}

.mobil-nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    color: var(--dark);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition);
    text-decoration: none;
}

.mobil-nav-link:hover,
.mobil-nav-link.aktif {
    color: var(--primary);
    background-color: rgba(13, 148, 136, 0.08);
}

/* ========================================
   Hero Section
======================================== */
.hero-section {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="0.5"/></svg>');
    background-size: 60px 60px;
    opacity: 0.5;
}

.hero-gradient-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(13, 148, 136, 0.15) 0%, 
        rgba(6, 182, 212, 0.1) 50%,
        transparent 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50px;
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    color: white;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 540px;
    margin-bottom: 2rem;
    line-height: 1.7;
}

/* ========================================
   Buttons
======================================== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(13, 148, 136, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(13, 148, 136, 0.45);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background: #25D366;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-whatsapp:hover {
    background: #20BD5C;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.35);
}

/* ========================================
   Cards
======================================== */
.card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.service-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-6px);
    border-color: transparent;
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, rgba(13, 148, 136, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    transform: scale(1.1);
}

/* ========================================
   Section Styles
======================================== */
.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-500);
    max-width: 600px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   Stats Section
======================================== */
.stat-card {
    text-align: center;
    padding: 2rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--gray-500);
    font-weight: 500;
}

/* ========================================
   Testimonials
======================================== */
.testimonial-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
}

.testimonial-text {
    font-size: 1.0625rem;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

/* ========================================
   Blog Cards
======================================== */
.blog-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.blog-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.blog-card-image {
    height: 200px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.blog-card-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,0.3) 100%);
}

.blog-card-content {
    padding: 1.5rem;
}

.blog-card-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(13, 148, 136, 0.1);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
}

.blog-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.75rem;
    line-height: 1.4;
    transition: color 0.3s;
}

.blog-card:hover .blog-card-title {
    color: var(--primary);
}

/* ========================================
   Contact Section
======================================== */
.contact-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, rgba(13, 148, 136, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
}

/* ========================================
   Form Styles
======================================== */
.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--gray-100);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-size: 1rem;
    color: var(--dark);
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    background: white;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.1);
}

.form-input::placeholder {
    color: var(--gray-400);
}

.form-label {
    display: block;
    font-weight: 500;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

/* ========================================
   Animations
======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fadeIn {
    animation: fadeIn 0.6s ease forwards;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* Delay utilities */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 1024px) {
    .hero-section {
        min-height: 70vh;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .hero-section {
        min-height: 80vh;
        padding-top: 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 640px) {
    .btn-primary,
    .btn-secondary,
    .btn-whatsapp {
        width: 100%;
        justify-content: center;
    }
}

/* ========================================
   Utility Classes
======================================== */
.glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.glass-dark {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.bg-gradient-accent {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13, 148, 136, 0.1) 0%, transparent 100%);
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.breadcrumb a:hover {
    color: var(--primary-light);
}

/* Gallery */
.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s;
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

/* Loading States */
.skeleton {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: skeleton 1.5s infinite;
    border-radius: var(--radius);
}

@keyframes skeleton {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}