@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;500;600;700;800&display=swap');

/* --- TASARIM SİSTEMİ & DEĞİŞKENLER --- */
:root {
    /* Renkler */
    --primary: #2073BD;
    --primary-rgb: 32, 115, 189;
    --accent: #E67A17;
    --accent-rgb: 230, 122, 23;

    --bg-dark: #0b0f19;
    --bg-card-dark: #141c2f;
    --bg-light: #f8fafc;
    --bg-card-light: #ffffff;

    --text-light: #f8fafc;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --text-muted-light: #94a3b8;

    /* Gölgeler ve Degradeler */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(var(--primary-rgb), 0.35);
    --shadow-glow-accent: 0 0 20px rgba(var(--accent-rgb), 0.35);

    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, #155286 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent) 0%, #c05b00 100%);
    --gradient-dark: linear-gradient(180deg, #0b0f19 0%, #060910 100%);
    --gradient-blue-orange: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);

    /* Sınırlar */
    --border-glass: rgba(255, 255, 255, 0.08);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;

    /* Yazı Tipleri */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Geçişler */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- SIFIRLAMA & GENEL STİLLER --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
}

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

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

li {
    list-style: none;
}

button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}

/* --- YARDIMCI SINIFLAR --- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-padding {
    padding: 100px 0;
}

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

.text-accent {
    color: var(--accent);
}

.text-primary {
    color: var(--primary);
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.badge-primary {
    background-color: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
}

.badge-accent {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 18px;
    border-radius: 100px;
    background: rgba(11, 15, 25, 0.45);
    backdrop-filter: blur(10px) saturate(140%);
    -webkit-backdrop-filter: blur(10px) saturate(140%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25), inset 0 0 10px rgba(249, 115, 22, 0.08);
    color: #FFFFFF;
    font-size: 0.82rem;
    font-weight: 700;
    font-family: var(--font-heading);
    letter-spacing: 1.1px;
    text-transform: uppercase;
    margin-bottom: 20px;
    transition: var(--transition-smooth);
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.9);
}

.hero-badge-glow:hover {
    background: rgba(11, 15, 25, 0.65);
    border-color: rgba(249, 115, 22, 0.6);
    box-shadow: 0 6px 22px rgba(249, 115, 22, 0.25);
    transform: translateY(-2px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #22c55e;
    box-shadow: 0 0 10px #22c55e;
    display: inline-block;
    animation: badgePulse 2s infinite ease-in-out;
}

@keyframes badgePulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
        box-shadow: 0 0 8px #22c55e;
    }
    50% {
        opacity: 0.55;
        transform: scale(0.85);
        box-shadow: 0 0 2px #22c55e;
    }
}

.badge-text-main {
    color: #FFFFFF;
    font-weight: 700;
}

.badge-separator {
    color: #F97316;
    font-weight: 800;
    margin: 0 2px;
}

.badge-text-sub {
    color: #FED7AA;
    font-weight: 600;
}

.section-title {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 20px;
    position: relative;
}

.section-desc {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 60px auto;
    font-size: 1.1rem;
}

/* --- BUTONLAR --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-light);
    box-shadow: var(--shadow-glow);
}

.btn-primary::before,
.btn-accent::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.btn-primary:hover::before,
.btn-accent:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(var(--primary-rgb), 0.4);
}

.btn-accent {
    background: var(--gradient-accent);
    color: var(--text-light);
    box-shadow: var(--shadow-glow-accent);
}

.btn-accent:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(var(--accent-rgb), 0.4);
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--text-light);
    transform: translateY(-3px);
}

/* --- HEADER / NAV --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-glass);
    transition: var(--transition-smooth);
}

.header-scrolled {
    padding: 10px 0;
    background-color: #0b0f19;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-light);
    letter-spacing: -1px;
}

.logo-accent {
    color: var(--accent);
}

.logo-sub {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--text-muted-light);
    margin-top: -4px;
}

.nav-menu {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-link {
    color: var(--text-muted-light);
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 6px 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-light);
}

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

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

.nav-toggle {
    display: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-light);
    margin: 5px 0;
    transition: var(--transition-fast);
}

/* --- HERO ALANI (CANLI RENKLER, YÜKSEK ŞIKLIK & YANSIYAN ZEMİN) --- */
.hero {
    min-height: 100vh;
    padding: 135px 0 65px 0;
    /* Resmi ve zemindeki yansımayı capcanlı tutan, hem üst hem alt geçişleri kusursuzleştiren gradyan */
    background: linear-gradient(180deg, rgba(11, 15, 25, 0.72) 0%, rgba(11, 15, 25, 0.30) 35%, rgba(11, 15, 25, 0.30) 65%, rgba(11, 15, 25, 0.85) 100%),
                url('../img/hero-bg.jpg') center center / cover no-repeat;
    position: relative;
    display: flex;
    align-items: center;
    color: var(--text-light);
    overflow: hidden;
}

.hero::before {
    display: none;
}

.hero > .container {
    position: relative;
    z-index: 2;
}

.hero-centered {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1050px; /* Geniş, ferah ve prestijli masaüstü kullanımı */
    margin: 0 auto;
    text-align: center;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    padding: 0;
    box-shadow: none;
}

.hero-title {
    font-size: 3.6rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
    line-height: 1.15;
    color: #FFFFFF;
}

/* Orijinal Kurumsal Renkler (Epoksi: Kraliyet Mavisı #2073BD, Zemin: Turuncu #E67A17) */
.hero-title span {
    background: var(--gradient-blue-orange);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none !important;
    display: inline-block;
}

.hero-desc {
    font-size: 1.2rem;
    color: #F1F5F9;
    margin-bottom: 40px;
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.65;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.95);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 0;
    padding: 28px 0 0 0;
    box-shadow: none;
    margin: 0 auto;
    max-width: 700px;
    width: 100%;
}

.stat-item h3 {
    font-size: 2.2rem;
    color: var(--accent);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.9);
}

.stat-item p {
    font-size: 0.9rem;
    color: #E2E8F0;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.9);
}

.visual-card-badge h4 {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.visual-card-badge p {
    font-size: 0.8rem;
    color: var(--text-muted-light);
}

/* --- HİZMETLERİMİZ --- */
.services {
    background-color: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--bg-card-light);
    border-radius: var(--radius-md);
    padding: 40px 30px;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--gradient-primary);
    transition: var(--transition-smooth);
}

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

.service-card:hover::before {
    height: 100%;
}

.service-card:hover .service-icon {
    transform: scale(1.1);
    background-color: rgba(var(--primary-rgb), 0.1);
}

.service-icon {
    width: 64px;
    height: 64px;
    background-color: rgba(var(--primary-rgb), 0.05);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition-smooth);
}

.service-icon svg {
    width: 32px;
    height: 32px;
    fill: var(--primary);
}

.service-card.accent-card .service-icon svg {
    fill: var(--accent);
}

.service-card.accent-card .service-icon {
    background-color: rgba(var(--accent-rgb), 0.05);
}

.service-card.accent-card::before {
    background: var(--gradient-accent);
}

.service-title {
    font-size: 1.4rem;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.service-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.service-link {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.service-card.accent-card .service-link {
    color: var(--accent);
}

.service-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    transition: transform var(--transition-fast);
}

.service-link:hover svg {
    transform: translateX(4px);
}

/* --- INTERAKTIF EPOKSI HESAPLAMA ARACI --- */
.calculator-section {
    background: radial-gradient(circle at 80% 20%, rgba(var(--accent-rgb), 0.08) 0%, transparent 40%),
        radial-gradient(circle at 20% 80%, rgba(var(--primary-rgb), 0.08) 0%, transparent 40%),
        #111827;
    color: var(--text-light);
}

.calculator-section .section-title {
    color: var(--text-light);
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 50px;
    align-items: stretch;
}

.calc-box {
    background-color: var(--bg-card-dark);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.calc-group {
    margin-bottom: 30px;
}

.calc-label {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 12px;
    display: block;
}

.calc-input-wrapper {
    display: flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 4px 16px;
    transition: var(--transition-fast);
}

.calc-input-wrapper:focus-within {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.calc-input-wrapper input {
    width: 100%;
    padding: 12px 0;
    color: var(--text-light);
}

.calc-input-wrapper span {
    color: var(--text-muted-light);
    font-weight: 600;
}

.calc-slider {
    width: 100%;
    margin-top: 10px;
    accent-color: var(--primary);
}

.calc-type-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.calc-type-card {
    border: 1px solid var(--border-glass);
    background-color: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-sm);
    padding: 20px;
    cursor: pointer;
    text-align: center;
    transition: var(--transition-smooth);
}

.calc-type-card:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: rgba(var(--primary-rgb), 0.5);
}

.calc-type-card.active {
    background-color: rgba(var(--primary-rgb), 0.15);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.calc-type-card h5 {
    font-size: 1rem;
    margin-bottom: 6px;
}

.calc-type-card p {
    font-size: 0.8rem;
    color: var(--text-muted-light);
}

.calc-results {
    background: linear-gradient(180deg, var(--bg-card-dark) 0%, rgba(20, 28, 47, 0.5) 100%);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: var(--shadow-lg);
}

.result-header {
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 24px;
    margin-bottom: 24px;
}

.result-header h4 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.result-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.result-item:last-child {
    border-bottom: none;
}

.result-label {
    color: var(--text-muted-light);
}

.result-val {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
}

.result-val-large {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent);
}

.calc-cta {
    margin-top: auto;
}

.calc-cta .btn {
    width: 100%;
}

.calc-note {
    font-size: 0.8rem;
    color: var(--text-muted-light);
    margin-top: 12px;
    text-align: center;
}

/* --- UYGULAMA SURECI --- */
.process {
    background-color: var(--bg-light);
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-top: 60px;
    position: relative;
}

.process-card {
    background-color: var(--bg-card-light);
    border-radius: var(--radius-md);
    padding: 40px 24px;
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: var(--transition-smooth);
    border: 1px solid rgba(0, 0, 0, 0.02);
}

.process-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(var(--primary-rgb), 0.2);
}

.process-number {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
    color: rgba(var(--primary-rgb), 0.25);
    position: absolute;
    top: 15px;
    right: 20px;
    transition: var(--transition-smooth);
}

.process-card:hover .process-number {
    color: rgba(var(--accent-rgb), 0.4);
    transform: scale(1.1);
}

.process-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    margin-top: 10px;
    color: var(--text-dark);
}

.process-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* --- PROJE GALERISI --- */
.gallery {
    background-color: #0b0f19;
    color: var(--text-light);
}

.gallery .section-title {
    color: var(--text-light);
}

.gallery-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    border-radius: 100px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    color: var(--text-muted-light);
    transition: var(--transition-smooth);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary);
    color: var(--text-light);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    height: 280px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-glass);
    cursor: pointer;
    transition: var(--transition-smooth);
}

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

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px;
    background: linear-gradient(0deg, rgba(6, 9, 16, 0.95) 0%, rgba(6, 9, 16, 0.7) 60%, transparent 100%);
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-smooth);
}

.gallery-item:hover {
    transform: scale(1.02);
}

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

.gallery-item:hover .gallery-overlay {
    opacity: 1;
    transform: translateY(0);
}

.gallery-overlay span {
    font-size: 0.8rem;
    color: var(--accent);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 1px;
}

.gallery-overlay h4 {
    font-size: 1.3rem;
    margin-top: 4px;
    margin-bottom: 8px;
}

.gallery-overlay p {
    font-size: 0.85rem;
    color: var(--text-muted-light);
}

/* --- FAQ / SSS AKORDIYO --- */
.faq {
    background-color: var(--bg-light);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-card-light);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.02);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-question {
    padding: 24px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    user-select: none;
}

.faq-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.faq-icon svg {
    width: 16px;
    height: 16px;
    fill: var(--text-muted);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 30px;
    color: var(--text-muted);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.faq-item.active {
    border-color: rgba(var(--primary-rgb), 0.2);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-item.active .faq-icon svg {
    fill: var(--primary);
}

.faq-item.active .faq-answer {
    padding-bottom: 24px;
    max-height: 200px;
    /* Dinamik JS ile kontrol edilecek */
}

/* --- FOOTER / ILETISIM --- */
.footer {
    background-color: #060910;
    color: var(--text-light);
    border-top: 1px solid var(--border-glass);
    padding-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1fr;
    gap: 50px;
    margin-bottom: 60px;
}

.footer-info p {
    color: var(--text-muted-light);
    margin-top: 16px;
    margin-bottom: 24px;
    font-size: 0.95rem;
}

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

.social-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.social-btn svg {
    width: 18px;
    height: 18px;
    fill: var(--text-muted-light);
}

.social-btn:hover {
    background-color: var(--accent);
    border-color: var(--accent);
    box-shadow: var(--shadow-glow-accent);
}

.social-btn:hover svg {
    fill: var(--text-light);
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4::after,
.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--accent);
}

.footer-menu li {
    margin-bottom: 12px;
}

.footer-menu a {
    color: var(--text-muted-light);
    font-size: 0.95rem;
}

.footer-menu a:hover {
    color: var(--text-light);
    padding-left: 6px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
    align-items: flex-start;
}

.contact-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 3px;
}

.contact-icon svg {
    width: 18px;
    height: 18px;
    fill: var(--accent);
}

.contact-text p {
    font-size: 0.95rem;
    color: var(--text-muted-light);
}

.contact-text a:hover {
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid var(--border-glass);
    padding: 30px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted-light);
    flex-wrap: wrap;
    gap: 16px;
}

/* --- WHATSAPP FLOATING BUTTON --- */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #0b0f19; /* Arka planı koyulaştırdık ki neon parlaklığı çıksın */
    width: 65px;
    height: 65px;
    border-radius: 50%;
    overflow: hidden; /* Resmi yuvarlak kesmek için */
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: var(--transition-smooth);
    animation: pulse-green 2s infinite;
}

.whatsapp-float img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.15); /* Resmi biraz büyütüp tam oturtuyoruz */
    transition: transform var(--transition-smooth);
}

.whatsapp-float:hover {
    transform: scale(1.1) rotate(10deg);
}

/* --- ANIMASYONLAR --- */
@keyframes float {
    0% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-12px) rotate(1deg);
    }

    100% {
        transform: translateY(0px) rotate(0deg);
    }
}

@keyframes pulse-green {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5);
    }

    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* --- HAKKIMIZDA --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

/* --- RENK KARTELASI --- */
.color-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.color-card {
    background-color: var(--bg-card-dark);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.color-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.2);
    border-color: var(--primary);
}

.color-box {
    height: 120px;
    width: 100%;
    transition: var(--transition-normal);
}

.color-card:hover .color-box {
    filter: brightness(1.1);
}

.color-info {
    padding: 20px;
    text-align: center;
}

.color-info h4 {
    margin-bottom: 5px;
    font-size: 1.1rem;
    color: var(--text-light);
}

.color-info span {
    font-size: 0.9rem;
    color: var(--text-muted-light);
    font-weight: 500;
}

/* --- GUVENEN MARKALAR (MARQUEE) --- */
.trusted-marquee {
    width: 100%;
    overflow: hidden;
    white-space: nowrap;
    position: relative;
    display: flex;
    background-color: var(--bg-dark);
    padding: 15px 0;
    border-top: 1px solid var(--border-glass);
    border-bottom: 1px solid var(--border-glass);
}

.marquee-content {
    display: inline-flex;
    align-items: center;
    gap: 30px;
    padding: 0 15px;
    animation: scroll-marquee 40s linear infinite;
}

.marquee-content span {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-light);
    letter-spacing: 1px;
}

.marquee-content .marquee-dot {
    color: var(--accent);
    font-size: 1.5rem;
}

@keyframes scroll-marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

/* --- YAPAY ZEKA ZEMİN GÖRSELLEŞTİRİCİ --- */
.visualizer-grid {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 40px;
    align-items: start;
}

.viz-controls {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.viz-upload-area {
    border: 2px dashed var(--border-glass);
    border-radius: var(--radius-md);
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    background: rgba(255, 255, 255, 0.02);
}

.viz-upload-area:hover,
.viz-upload-area.drag-over {
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.05);
}

.viz-upload-area.has-image {
    padding: 12px;
    border-style: solid;
    border-color: var(--primary);
}

.viz-upload-area.has-image .viz-upload-content {
    display: none;
}

.viz-upload-area .viz-thumb {
    max-width: 100%;
    max-height: 180px;
    border-radius: var(--radius-sm);
    object-fit: cover;
}

.viz-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.viz-color-picker {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.viz-color-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 3px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
}

.viz-color-btn:hover {
    transform: scale(1.15);
}

.viz-color-btn.active {
    border-color: var(--text-light);
    box-shadow: 0 0 12px rgba(255, 255, 255, 0.3);
}

.viz-color-btn.active::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
    text-shadow: 0 1px 3px rgba(0,0,0,0.6);
}

.viz-finish-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.viz-finish-btn {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-glass);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-muted-light);
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: left;
    font-size: 0.9rem;
}

.viz-finish-btn:hover {
    border-color: var(--accent);
    color: var(--text-light);
}

.viz-finish-btn.active {
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent);
    font-weight: 600;
}

.viz-transform-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.viz-preview {
    display: flex;
    flex-direction: column;
}

.viz-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.viz-before,
.viz-after {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-dark);
    aspect-ratio: 4/3;
    border: 1px solid var(--border-glass);
}

.viz-before canvas,
.viz-after canvas {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.viz-label {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
    background: rgba(11, 15, 25, 0.75);
    backdrop-filter: blur(8px);
    color: var(--text-light);
    padding: 4px 14px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    font-family: var(--font-heading);
}

.viz-label-after {
    background: rgba(var(--accent-rgb), 0.85);
}

.viz-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    z-index: 1;
}

.viz-placeholder p {
    color: var(--text-muted-light);
    font-size: 0.85rem;
    text-align: center;
    padding: 0 20px;
}

.viz-share-btn {
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: var(--shadow-glow); }
    50% { box-shadow: 0 0 30px rgba(var(--primary-rgb), 0.6); }
}

/* --- İNTERAKTİF ÖNCE/SONRA SLIDER --- */
.viz-slider-container {
    margin-top: 28px;
    border-top: 1px solid var(--border-glass);
    padding-top: 24px;
}

.viz-slider-wrapper {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: ew-resize;
    aspect-ratio: 4/3;
    border: 1px solid var(--border-glass);
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

.viz-slider-canvas {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    position: absolute;
    top: 0;
    left: 0;
}

.viz-slider-overlay {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 50%;
    overflow: hidden;
}

.viz-slider-overlay .viz-slider-canvas {
    position: absolute;
    top: 0;
    right: 0;
    width: auto;
    min-width: 100%;
}

.viz-slider-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.viz-slider-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 3px;
    background: white;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.5);
}

.viz-slider-knob {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent);
    border: 3px solid white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
    z-index: 6;
    transition: transform 0.15s ease;
}

.viz-slider-wrapper:active .viz-slider-knob {
    transform: scale(1.15);
}

/* --- REFERANSLAR MODALI --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(11, 15, 25, 0.9);
    backdrop-filter: blur(5px);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--bg-card-dark);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 900px;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    padding: 40px;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--accent);
    transform: scale(1.1);
}

.refs-columns ul {
    list-style-type: disc;
    padding-left: 20px;
    column-count: 2;
    column-gap: 40px;
    color: var(--text-muted-light);
    line-height: 1.8;
}

.refs-columns li {
    margin-bottom: 10px;
    break-inside: avoid;
}

/* --- RESPONSIVE TASARIM (MOBİL UYUMLULUK) --- */
@media (max-width: 1024px) {

    .hero-grid,
    .calculator-grid,
    .about-grid,
    .visualizer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .viz-comparison {
        grid-template-columns: 1fr 1fr;
    }

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

    .color-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .hero {
        padding-top: 140px;
        text-align: center;
    }

    .hero-desc {
        margin: 0 auto 30px auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
        gap: 30px;
    }

    .visual-card-wrapper {
        margin: 0 auto;
        height: 400px;
        max-width: 380px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .nav-toggle {
        display: block;
        z-index: 1001;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: #0b0f19;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 30px;
        transition: var(--transition-smooth);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
        z-index: 1000;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        font-size: 1.2rem;
    }

    .calc-box,
    .calc-results {
        padding: 24px;
    }

    .calc-type-grid {
        grid-template-columns: 1fr;
    }

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

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

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

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

    .viz-comparison {
        grid-template-columns: 1fr;
    }

    .viz-before,
    .viz-after {
        aspect-ratio: 16/10;
    }

    .viz-color-btn {
        width: 36px;
        height: 36px;
    }

    .about-features {
        grid-template-columns: 1fr !important;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .refs-columns ul {
        column-count: 1;
    }

    .section-padding {
        padding: 60px 0;
    }

    /* --- MOBİL ARAYÜZ (UI) İYİLEŞTİRMELERİ --- */
    .hero {
        padding: 95px 0 35px 0;
        min-height: auto;
        /* Mobilde arka plan resmini ve tüm gürültüyü kapatıp, şık koyu degrade & mavi-turuncu ortam ışıltısına geçiyoruz */
        background: radial-gradient(circle at 50% 15%, rgba(var(--primary-rgb), 0.22) 0%, transparent 55%),
                    radial-gradient(circle at 50% 85%, rgba(var(--accent-rgb), 0.15) 0%, transparent 55%),
                    #0b0f19;
    }

    .badge-accent {
        font-size: 0.75rem;
        padding: 6px 14px;
        margin-bottom: 12px;
        letter-spacing: 0.5px;
    }

    .hero-title {
        font-size: 1.8rem;
        line-height: 1.22;
        margin-bottom: 12px;
    }

    .hero-desc {
        font-size: 0.92rem;
        margin-bottom: 20px;
        line-height: 1.5;
    }

    /* Mobilde 2+1 Buton Düzeni: İlk 2 buton yan yana, 3. buton altta (Uygulama gibi compact) */
    .hero-actions {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        width: 100%;
        margin-bottom: 24px;
    }

    .hero-actions .btn {
        width: 100%;
        padding: 11px 14px;
        font-size: 0.9rem;
        text-align: center;
        white-space: nowrap;
    }

    /* 3. Buton (Kataloğu İndir) tam genişlik kaplar */
    .hero-actions .btn:last-child {
        grid-column: span 2;
    }

    /* İstatistikler için Şık Mobil Cam Panel (WhatsApp logosuna çakışmaz) */
    .hero-stats {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
        width: 100%;
        background: rgba(20, 28, 47, 0.45);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 16px;
        padding: 14px 6px;
        margin-bottom: 10px;
    }

    .stat-item h3 {
        font-size: 1.25rem;
    }

    .stat-item p {
        font-size: 0.7rem;
        line-height: 1.2;
    }

    /* Mobilde WhatsApp Butonunu yazıları örtmeyecek şekilde konumlandır */
    .whatsapp-float {
        bottom: 20px;
        right: 18px;
        width: 52px;
        height: 52px;
    }

    .visual-info {
        display: none !important; /* Görüntüyü kapatan kartı mobilde gizle */
    }

    .calc-box,
    .calc-results {
        padding: 20px 16px;
    }

    .calc-label {
        font-size: 0.95rem;
    }

    .result-item {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
        margin-bottom: 15px;
    }

    .result-val-large {
        font-size: 1.7rem !important;
    }

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

/* --- SCROLL REVEAL (MODERN YUKARI KAYDIRMA) EFEKTLERİ --- */
.reveal-hidden {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Kutu Gölgeleri ve Hover Geliştirmeleri (Premium Hissiyat) */
.service-card:hover, .process-card:hover, .gallery-item:hover, .calc-wrapper {
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.5), 0 18px 36px -18px rgba(var(--primary-rgb), 0.15);
    border-color: rgba(255, 255, 255, 0.12);
}

.service-icon, .process-number {
    box-shadow: 0 0 25px rgba(var(--primary-rgb), 0.2);
}

/* --- LIGHTBOX (FOTOĞRAF BÜYÜTME) EFEKTLERİ --- */
.lightbox-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox-overlay.active {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    object-fit: contain;
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.lightbox-overlay.active .lightbox-content {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10001;
    transition: color 0.3s;
}

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

.gallery-item {
    cursor: zoom-in;
}