/* ==========================================
   BrightSmile Dental Clinic - Modern & Professional
   ========================================== */

/* ==========================================
   CSS Variables (Renk Paleti & Ayarlar)
   ========================================== */
:root {
    /* Ana Renkler */
    --primary-color: #4A90E2;        /* Açık Mavi */
    --secondary-color: #D4AF37;      /* Altın */
    --accent-color: #6EC1E4;         /* Açık Mavi Ton */
    --dark-color: #2C3E50;           /* Koyu Gri */
    --light-color: #F8F9FA;          /* Açık Gri */
    --white-color: #FFFFFF;          /* Beyaz */
    --text-color: #333333;           /* Metin Rengi */
    --text-light: #6C757D;           /* Açık Metin */
    --border-color: #E0E0E0;         /* Çerçeve Rengi */
    
    /* Gradient */
    --gradient-primary: linear-gradient(135deg, #4A90E2 0%, #6EC1E4 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(74, 144, 226, 0.9) 0%, rgba(110, 193, 228, 0.9) 100%);
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-size-base: 16px;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-max-width: 1200px;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-primary);
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--white-color);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

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

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.section-divider {
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 0 auto 20px;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition-fast);
    text-align: center;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white-color);
    box-shadow: var(--shadow-md);
}

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

/* ==========================================
   Header / Navigation
   ========================================== */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white-color);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-fast);
}

#header.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar {
    padding: 20px 0;
}

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

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

.logo i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    font-weight: 500;
    color: var(--text-color);
    position: relative;
    transition: var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-fast);
}

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

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

/* Language Switcher */
.language-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 15px;
}

.lang-btn {
    font-weight: 600;
    color: var(--text-light);
    padding: 5px 10px;
    border-radius: 5px;
    transition: var(--transition-fast);
}

.lang-btn:hover,
.lang-btn.active {
    color: var(--primary-color);
    background: rgba(74, 144, 226, 0.1);
}

.lang-separator {
    color: var(--border-color);
}

/* Hamburger Menu (Mobile) */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--dark-color);
    border-radius: 3px;
    transition: var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

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

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.8) 0%, rgba(110, 193, 228, 0.8) 100%),
                url('https://images.unsplash.com/photo-1588776814546-1ffcf47267a5?w=1920&h=1080&fit=crop') center/cover no-repeat;
    background-attachment: fixed;
    color: var(--white-color);
    text-align: center;
    margin-top: 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.3s backwards;
}

.hero .btn {
    animation: fadeInUp 1s ease 0.6s backwards;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    color: var(--white-color);
}

/* ==========================================
   About Section
   ========================================== */
.about {
    background: var(--light-color);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    transition: var(--transition-medium);
}

.about-image:hover img {
    transform: scale(1.05);
}

.experience-badge {
    position: absolute;
    bottom: 30px;
    right: 30px;
    background: var(--gradient-primary);
    color: var(--white-color);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.badge-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.badge-text {
    display: block;
    font-size: 0.9rem;
    margin-top: 5px;
    opacity: 0.95;
}

.about-text h3 {
    font-size: 2rem;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 30px;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-color);
}

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

/* ==========================================
   Services Section
   ========================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white-color);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-medium);
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--gradient-primary);
    color: var(--white-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    transition: var(--transition-fast);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
    font-size: 1.4rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ==========================================
   Doctors Section
   ========================================== */
.doctors {
    background: var(--light-color);
}

.doctors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.doctor-card {
    background: var(--white-color);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-medium);
}

.doctor-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.doctor-image {
    position: relative;
    overflow: hidden;
    height: 350px;
}

.doctor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-medium);
}

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

.doctor-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-fast);
}

.doctor-card:hover .doctor-overlay {
    opacity: 1;
}

.doctor-social {
    display: flex;
    gap: 15px;
}

.doctor-social a {
    width: 45px;
    height: 45px;
    background: var(--white-color);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition-fast);
}

.doctor-social a:hover {
    background: var(--secondary-color);
    color: var(--white-color);
    transform: scale(1.1);
}

.doctor-info {
    padding: 30px;
    text-align: center;
}

.doctor-info h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.doctor-specialty {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.doctor-bio {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ==========================================
   Gallery Section
   ========================================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    height: 300px;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-medium);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-fast);
}

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

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

.gallery-overlay i {
    font-size: 3rem;
    color: var(--white-color);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    justify-content: center;
    align-items: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    animation: zoomIn 0.3s ease;
}

.lightbox-close {
    position: absolute;
    top: 30px;
    right: 40px;
    font-size: 3rem;
    color: var(--white-color);
    cursor: pointer;
    transition: var(--transition-fast);
}

.lightbox-close:hover {
    color: var(--secondary-color);
}

.lightbox-nav {
    position: absolute;
    width: 100%;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
}

.lightbox-prev,
.lightbox-next {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: var(--transition-fast);
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--primary-color);
}

/* ==========================================
   Testimonials Section
   ========================================== */
.testimonials {
    background: var(--light-color);
}

.testimonials-slider {
    position: relative;
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
}

.testimonial-track {
    display: flex;
    transition: transform var(--transition-medium);
}

.testimonial-card {
    min-width: 100%;
    background: var(--white-color);
    padding: 50px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.testimonial-stars {
    color: var(--secondary-color);
    font-size: 1.3rem;
    margin-bottom: 25px;
}

.testimonial-text {
    font-size: 1.1rem;
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 30px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-color);
}

.testimonial-author h4 {
    color: var(--dark-color);
    margin-bottom: 5px;
}

.testimonial-author span {
    color: var(--text-light);
    font-size: 0.9rem;
}

.testimonial-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

.testimonial-btn {
    background: var(--primary-color);
    color: var(--white-color);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.testimonial-btn:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
}

.testimonial-dots {
    display: flex;
    gap: 10px;
}

.testimonial-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: var(--transition-fast);
}

.testimonial-dot.active {
    background: var(--primary-color);
    width: 30px;
    border-radius: 6px;
}

/* ==========================================
   Contact Section
   ========================================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-form-wrapper {
    background: var(--white-color);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
}

.form-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    display: block;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    display: block;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.info-card {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: var(--white-color);
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

.info-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.info-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    color: var(--white-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-content h3 {
    color: var(--dark-color);
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.info-content p {
    color: var(--text-light);
    line-height: 1.7;
}

.map-container {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--dark-color);
    color: var(--white-color);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-logo i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.footer-column p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-column h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
}

.footer-links li,
.footer-contact li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    gap: 12px;
    color: rgba(255, 255, 255, 0.8);
}

.footer-contact i {
    color: var(--primary-color);
    margin-top: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
}

/* ==========================================
   Scroll to Top Button
   ========================================== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-20px);
    }
    60% {
        transform: translateX(-50%) translateY(-10px);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Scroll Animation */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   Responsive Design - Tablet
   ========================================== */
@media (max-width: 992px) {
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .services-grid,
    .doctors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==========================================
   Responsive Design - Mobile
   ========================================== */
@media (max-width: 768px) {
    :root {
        --section-padding: 50px 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white-color);
        flex-direction: column;
        padding: 40px 20px;
        box-shadow: var(--shadow-md);
        transition: var(--transition-fast);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .language-switcher {
        margin-left: 0;
    }
    
    .hero {
        margin-top: 80px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .services-grid,
    .doctors-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial-card {
        padding: 30px 20px;
    }
    
    .testimonial-text {
        font-size: 1rem;
    }
    
    .contact-form-wrapper {
        padding: 25px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .scroll-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .about-text h3 {
        font-size: 1.5rem;
    }
    
    .testimonial-card {
        padding: 25px 15px;
    }
}