/* ===================================
   GÖKSUDENT - PREMIUM STYLE
   Kar Beyazı | Şampanya Altını | Soft Gece Mavisi
   ================================ */

/* ===== DESIGN TOKENS ===== */
:root {
    /* Colors - Premium Palette */
    --white-snow: #FFFFFF;
    --white-cream: #FAFAF8;
    --champagne-gold: #D4AF37;
    --champagne-light: #F4E4C1;
    --night-blue: #2C3E50;
    --night-blue-soft: #506680;

    --grey-light: #F5F5F5;
    --grey-medium: #9CA3AF;
    --grey-dark: #4B5563;
    --text-primary: #1F2937;

    /* Typography */
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-sans: 'Inter', -apple-system, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-gold: 0 4px 16px rgba(212, 175, 55, 0.25);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transitions */
    --transition: 300ms ease;
}

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

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

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--white-snow);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

button {
    font-family: inherit;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

/* ===== UTILITIES ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.section-label {
    display: inline-block;
    color: var(--champagne-gold);
    font-weight: 600;
    font-size: 0.813rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 2.75rem);
    color: var(--night-blue);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
    font-weight: 600;
}

.section-description {
    font-size: 1.063rem;
    color: var(--grey-dark);
    line-height: 1.7;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.938rem;
    transition: all var(--transition);
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--champagne-gold);
    color: var(--white-snow);
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    background: #C19B2E;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.3);
}

.btn-secondary {
    background: var(--white-snow);
    color: var(--night-blue);
    border-color: var(--grey-light);
}

.btn-secondary:hover {
    background: var(--grey-light);
    border-color: var(--champagne-gold);
}

.btn-large {
    padding: 16px 36px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
    display: block;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.logo h2 {
    font-family: var(--font-serif);
    color: var(--night-blue);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo-subtitle {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.688rem;
    color: var(--champagne-gold);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 2px;
}

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

.nav-link {
    color: var(--grey-dark);
    font-weight: 500;
    font-size: 0.938rem;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--champagne-gold);
    transition: width var(--transition);
}

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

.header-cta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.language-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--white-snow);
    border: 1px solid var(--grey-light);
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
}

.lang-btn .flag {
    font-size: 1.125rem;
}

.lang-btn:hover {
    border-color: var(--champagne-gold);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--white-snow);
    border: 1px solid var(--grey-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition);
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 0.875rem;
    transition: var(--transition);
    cursor: pointer;
}

.lang-option:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.lang-option:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.lang-option:hover {
    background: var(--champagne-light);
}

.lang-option .flag {
    font-size: 1.25rem;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    padding: 8px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--night-blue);
    transition: var(--transition);
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.85) 0%,
            rgba(250, 250, 248, 0.75) 50%,
            rgba(244, 228, 193, 0.65) 100%);
    z-index: 2;
}

.hero .container {
    position: relative;
    z-index: 3;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xxl) 0;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    color: var(--night-blue);
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.hero-description {
    font-size: 1.188rem;
    color: var(--grey-dark);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--champagne-gold);
    font-size: 0.813rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    z-index: 3;
}

.scroll-arrow {
    margin-top: 8px;
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(10px);
    }
}

/* ===== SERVICES SECTION ===== */
.services {
    padding: var(--spacing-xxl) 0;
    background: var(--white-cream);
}

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

.service-card {
    background: var(--white-snow);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    position: relative;
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--champagne-light);
}

.service-card.featured {
    border: 2px solid var(--champagne-gold);
    background: linear-gradient(135deg, var(--white-snow), var(--champagne-light));
}

.service-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--champagne-gold);
    color: var(--white-snow);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.service-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--night-blue);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.service-description {
    color: var(--grey-dark);
    line-height: 1.7;
    font-size: 0.938rem;
}

/* ===== GALLERY SECTION ===== */
.gallery {
    padding: var(--spacing-xxl) 0;
    background: var(--white-snow);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.gallery-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    background: var(--white-snow);
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.before-after-container {
    position: relative;
}

.before-after-slider {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: ew-resize;
    user-select: none;
}

.before-image,
.after-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.after-image {
    clip-path: polygon(50% 0, 100% 0, 100% 100%, 50% 100%);
}

.slider-handle {
    position: absolute;
    top: 0;
    left: 50%;
    width: 3px;
    height: 100%;
    background: var(--champagne-gold);
    transform: translateX(-50%);
    z-index: 10;
    cursor: ew-resize;
}

.slider-handle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: var(--champagne-gold);
    border: 3px solid var(--white-snow);
    border-radius: 50%;
    box-shadow: var(--shadow-md);
}

.slider-handle::after {
    content: '⬌';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white-snow);
    font-size: 1.25rem;
    z-index: 1;
}

.slider-labels {
    position: absolute;
    top: 16px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 5;
    pointer-events: none;
}

.label-before,
.label-after {
    background: rgba(255, 255, 255, 0.95);
    color: var(--night-blue);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    box-shadow: var(--shadow-sm);
}

.label-after {
    background: var(--champagne-gold);
    color: var(--white-snow);
}

.gallery-info {
    padding: var(--spacing-md);
    text-align: center;
}

.gallery-info h4 {
    font-family: var(--font-serif);
    font-size: 1.188rem;
    color: var(--night-blue);
    margin-bottom: var(--spacing-xs);
}

.gallery-info p {
    color: var(--grey-dark);
    font-size: 0.875rem;
}

.gallery-placeholder {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--champagne-light), var(--white-cream));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.gallery-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
}

.gallery-placeholder p {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--night-blue);
}

/* ===== TRUST SECTION ===== */
.trust {
    padding: var(--spacing-xxl) 0;
    background: var(--night-blue);
    color: var(--white-snow);
}

.trust .section-label {
    color: var(--champagne-gold);
}

.trust .section-title {
    color: var(--white-snow);
}

.trust-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.trust-features {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.trust-feature {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.trust-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.trust-feature h4 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--champagne-gold);
}

.trust-feature p {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.6;
}

.trust-image .image-placeholder {
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--night-blue-soft), var(--champagne-gold));
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.placeholder-icon {
    font-size: 6rem;
    margin-bottom: var(--spacing-md);
}

.trust-image p {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    text-align: center;
}

/* ===== ABOUT SECTION ===== */
.about {
    padding: var(--spacing-xxl) 0;
    background: var(--white-cream);
}

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

.about-text {
    margin: var(--spacing-lg) 0;
}

.about-text p {
    font-size: 1.063rem;
    line-height: 1.8;
    color: var(--grey-dark);
    margin-bottom: var(--spacing-md);
}

.about-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.value-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.value-number {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--champagne-gold);
}

.value-label {
    font-size: 0.938rem;
    color: var(--grey-dark);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ===== CONTACT SECTION ===== */
.contact {
    padding: var(--spacing-xxl) 0;
    background: var(--white-snow);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-xxl);
    margin-top: var(--spacing-xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    font-size: 2rem;
    color: var(--champagne-gold);
    flex-shrink: 0;
}

.contact-details h4 {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    color: var(--night-blue);
    margin-bottom: var(--spacing-xs);
}

.contact-details a {
    color: var(--champagne-gold);
    font-weight: 500;
}

.contact-details a:hover {
    text-decoration: underline;
}

.contact-details p {
    color: var(--grey-dark);
    line-height: 1.6;
}

.contact-form {
    background: var(--white-cream);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--grey-light);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.938rem;
    transition: var(--transition);
    background: var(--white-snow);
}

.form-input:focus {
    outline: none;
    border-color: var(--champagne-gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-note {
    margin-top: var(--spacing-sm);
    font-size: 0.813rem;
    color: var(--grey-medium);
    text-align: center;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--night-blue);
    color: var(--white-snow);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-lg);
}

.footer-brand h3 {
    font-family: var(--font-serif);
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--champagne-gold);
}

.footer-subtitle {
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--champagne-light);
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: var(--champagne-gold);
}

.footer-links a {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.938rem;
}

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

.footer-contact p {
    margin-bottom: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.938rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.footer-social a {
    color: var(--champagne-gold);
    font-weight: 500;
}

.footer-social a:hover {
    text-decoration: underline;
}

/* ===== WHATSAPP FLOAT ===== */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: var(--transition);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.whatsapp-float svg {
    width: 32px;
    height: 32px;
    color: white;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {

    .trust-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        z-index: 999;
    }

    .nav.active {
        display: flex;
    }

    .nav-link {
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--grey-light);
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    .menu-toggle {
        display: flex;
    }

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

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

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

    .about-values {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 80px;
    }

    .whatsapp-float svg {
        width: 26px;
        height: 26px;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.whatsapp-float {
    animation: pulse 2s ease-in-out infinite;
}

/* Keyboard navigation focus */
.keyboard-nav *:focus {
    outline: 2px solid var(--champagne-gold);
    outline-offset: 2px;
}