:root {
    --bg-color: #0d0f12;
    --panel-bg: rgba(22, 27, 34, 0.85);
    --accent-color: #ff0055;
    --accent-hover: #ff3377;
    --text-color: #ffffff;
    --text-dim: #a0a0a0;
    --border-color: rgba(255, 255, 255, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Rajdhani', sans-serif;
}

body {
    background-color: var(--bg-color);
    background-image: url('https://i.ibb.co/dSQQbB3/6c9bddf3-ed58-4638-96a4-89ef4de4eb54.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    color: var(--text-color);
    min-height: 100vh;
}

/* Header / Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    background: rgba(13, 15, 18, 0.9);
    border-bottom: 2px solid var(--accent-color);
    backdrop-filter: blur(10px);
}

.logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    font-weight: 900;
    letter-spacing: 2px;
}

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

.nav-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 10px 20px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    margin-left: 10px;
    transition: 0.3s;
}

.nav-btn.active, .nav-btn:hover:not(:disabled) {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Sayfa Görünümleri */
.view-section {
    display: none;
    padding: 40px 50px;
}

.view-section.active {
    display: block;
}

.section-title h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 32px;
    color: var(--accent-color);
}

.section-title p {
    color: var(--text-dim);
    margin-bottom: 30px;
}

/* Galeri Ekranı Grid */
.car-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.car-card {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s, border-color 0.3s;
}

.car-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.car-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.car-card-body {
    padding: 20px;
}

.car-card-body h3 { font-family: 'Orbitron', sans-serif; }
.car-card-body span { color: var(--accent-color); font-size: 14px; font-weight: bold; }

.select-btn {
    width: 100%;
    margin-top: 15px;
    padding: 12px;
    background: var(--accent-color);
    border: none;
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
}

.select-btn:hover { background: var(--accent-hover); }

/* Modifiye Ekranı (Customizer) Layout */
.customizer-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    height: calc(100vh - 160px);
}

/* Önizleme Sahnesi ve KATMANLAR */
.preview-box {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.car-stage {
    position: relative;
    width: 80%;
    max-width: 800px;
    height: 400px;
}

/* KATMANLARI ÜST ÜSTE BİNDİREN KRİTİK CSS */
.car-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
    transition: all 0.3s ease;
}

/* Renk Efekti Simülasyonu */
.color-overlay {
    mix-blend-mode: color;
    opacity: 0.7;
}

.car-info-badge {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(0,0,0,0.6);
    padding: 10px 20px;
    border-left: 4px solid var(--accent-color);
}

/* Kontrol Paneli & Sekmeler */
.controls-box {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.tab-btn {
    flex: 1;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: white;
    font-weight: bold;
    cursor: pointer;
}

.tab-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* Renk ve Parça Seçim Elemanları */
.color-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-top: 15px;
}

.color-dot {
    width: 100%;
    height: 45px;
    border-radius: 6px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: 0.2s;
}

.color-dot:hover, .color-dot.active {
    border-color: #fff;
    transform: scale(1.05);
}

.option-btn {
    width: 100%;
    padding: 12px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    color: white;
    text-align: left;
    margin-top: 10px;
    cursor: pointer;
    transition: 0.2s;
}

.option-btn:hover, .option-btn.active {
    border-color: var(--accent-color);
    background: rgba(255, 0, 85, 0.1);
}

/* Özet Paneli */
.summary-box {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.summary-box ul {
    list-style: none;
    margin: 10px 0;
    color: var(--text-dim);
}

.save-btn {
    width: 100%;
    padding: 15px;
    background: #00e676;
    border: none;
    color: #000;
    font-weight: 900;
    font-family: 'Orbitron', sans-serif;
    cursor: pointer;
}