/* --- 1. المتغيرات وإعدادات الألوان --- */
:root {
    --bg-dark: #050505;
    --bg-card: #141414;
    --gold-main: #D4AF37;
    --gold-gradient: linear-gradient(135deg, #D4AF37 0%, #F4E285 50%, #AA8C2C 100%);
    --text-white: #ffffff;
    --text-gray: #b0b0b0;
    --glass: rgba(20, 20, 20, 0.7);
    --border-glass: rgba(255, 255, 255, 0.08);
    --safe-area-bottom: env(safe-area-inset-bottom);
    --color-black: #000000;
}

/* --- 2. الإعدادات العامة (Reset) --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent; /* إزالة لون النقر الأزرق في الموبايل */
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Cairo', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-white);
    overflow-x: hidden;
    padding-bottom: 80px; /* مساحة للنافبار السفلي في الموبايل */
}

/* منع التمرير أثناء ظهور شاشة التحميل */
body.loading {
    overflow: hidden;
}

/* --- 3. شاشة التحميل (Preloader) --- */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-black);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.preloader.loaded {
    opacity: 0;
    visibility: hidden;
}

.preloader .ecg-loader {
    width: 200px;
    height: 60px;
}

.preloader .ecg-loader path {
    fill: none;
    stroke: var(--gold-main);
    stroke-width: 2;
    stroke-dasharray: 400;
    stroke-dashoffset: 400;
    animation: draw-ecg 2.5s ease-in-out infinite;
}

@keyframes draw-ecg {
    0% { stroke-dashoffset: 400; }
    100% { stroke-dashoffset: 0; }
}

/* --- 4. النصوص والعناوين --- */
.gold-text {
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

h1, h2, h3 {
    line-height: 1.3;
}

.section-header {
    text-align: center;
    margin-bottom: 30px;
    padding: 0 20px;
}

.section-header h2 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.section-header p {
    color: var(--text-gray);
    font-size: 0.9rem;
    max-width: 600px;
    margin: 0 auto;
}

/* --- 5. الأزرار (Buttons) --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 35px;
    border-radius: 50px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 1rem;
}

.btn-gold {
    background: var(--gold-gradient);
    color: #000;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
    border: none;
}

.btn-gold:active {
    transform: scale(0.95);
}

.btn-gold:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
}

/* --- 6. الهيدر (Desktop Header) --- */
.desktop-header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    background: rgba(5, 5, 5, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-glass);
}

.logo {
    display: flex;
    align-items: center;
}

.desktop-nav {
    display: flex;
    gap: 25px;
}

.desktop-nav a {
    color: var(--text-white);
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s;
}

.desktop-nav a:hover {
    color: var(--gold-main);
}

/* --- 7. قسم Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
    overflow: hidden;
    /* تأكد أن الصورة موجودة في images/ui/bg.jpg */
    background: url('../../images/ui/bg.jpg') no-repeat center center/cover;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to bottom, rgba(5,5,5,0.4), rgba(5,5,5,1));
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    animation: fadeInUp 1s ease-out;
}

.hero-logo-img {
    width: 120px;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 10px rgba(212,175,55,0.3));
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 15px;
    line-height: 1.1;
}

.hero p {
    font-size: 1.1rem;
    color: #ddd;
    margin-bottom: 30px;
}

/* كرات الضوء الخلفية */
.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    opacity: 0.4;
}
.orb-1 { width: 300px; height: 300px; background: var(--gold-main); top: -100px; right: -100px; }
.orb-2 { width: 200px; height: 200px; background: #333; bottom: 10%; left: -50px; }

/* --- 8. سلايدر المنتجات (Swipe) --- */
.scrolling-wrapper {
    display: flex;
    overflow-x: auto;
    gap: 20px;
    padding: 20px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-right: 5%;
}

.scrolling-wrapper::-webkit-scrollbar {
    display: none;
}

.product-card {
    flex: 0 0 85%; /* للموبايل */
    max-width: 350px;
    scroll-snap-align: center;
    background: var(--bg-card);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    position: relative;
    transition: transform 0.3s;
}

.product-image {
    height: 400px;
    width: 100%;
    overflow: hidden;
    position: relative;
    background-color: #1a1a1a; /* لون خلفية احتياطي */
}

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

/* تأثير التكبير عند الوقوف بالماوس (للديسك توب) */
.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.95), transparent);
    padding: 60px 20px 20px;
}

.product-info h3 {
    font-size: 1.5rem;
    margin-bottom: 5px;
    color: var(--text-white);
}

.product-info p {
    color: var(--gold-main);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.tag {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    color: var(--gold-main);
    border: 1px solid var(--gold-main);
    z-index: 10;
}

/* --- 9. المميزات (Features) --- */
.features-section {
    padding: 60px 0;
    background: #080808;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    padding: 0 20px;
}

.feature-box {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-glass);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
}

.feature-box i {
    font-size: 2rem;
    color: var(--gold-main);
    margin-bottom: 10px;
}

.feature-box h4 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.feature-box p {
    font-size: 0.8rem;
    color: #888;
}

/* --- 10. الرؤية (Vision) --- */
.vision-section {
    padding: 40px 20px;
    position: relative;
}

.vision-card {
    background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid var(--gold-main);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.vision-card::before {
    content: '\f10e'; /* FontAwesome Quote Icon */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: -20px;
    left: 20px;
    font-size: 8rem;
    color: rgba(255,255,255,0.03);
}

/* --- 11. الأكورديون (الدليل الفني) --- */
.tech-section {
    padding: 50px 20px;
}

.accordion-item {
    background: var(--bg-card);
    margin-bottom: 15px;
    border-radius: 10px;
    border: 1px solid var(--border-glass);
    overflow: hidden;
}

.accordion-header {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: rgba(255,255,255,0.02);
}

.accordion-header h3 {
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 20px;
    color: var(--text-gray);
    font-size: 0.95rem;
}

.accordion-content.open {
    max-height: 500px;
    padding: 20px;
    border-top: 1px solid var(--border-glass);
}

.size-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    text-align: center;
}
.size-table th, .size-table td {
    padding: 10px;
    border-bottom: 1px solid #333;
    color: #ccc;
}
.size-table th {
    color: var(--gold-main);
}

/* --- 12. الفوتر (Footer) --- */
footer {
    text-align: center;
    padding: 40px 20px 120px; /* مسافة إضافية عشان النافبار الموبايل */
    background: #000;
    border-top: 1px solid #111;
}

.social-links {
    margin: 20px 0;
}
.social-links a {
    color: var(--text-white);
    margin: 0 10px;
    font-size: 1.5rem;
    transition: 0.3s;
}
.social-links a:hover { color: var(--gold-main); }

/* --- 13. نافبار الموبايل السفلي --- */
.mobile-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(15px);
    border-top: 1px solid var(--border-glass);
    display: flex;
    justify-content: space-around;
    padding: 12px 0 calc(12px + var(--safe-area-bottom));
    z-index: 1000;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.5);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #666;
    text-decoration: none;
    font-size: 0.75rem;
    gap: 5px;
    transition: 0.3s;
}

.nav-item i {
    font-size: 1.4rem;
}

.nav-item.active {
    color: var(--gold-main);
}

.nav-item.active i {
    transform: translateY(-2px);
    filter: drop-shadow(0 0 5px rgba(212, 175, 55, 0.5));
}

/* --- 14. التجاوب (Media Queries) --- */
@media (max-width: 768px) {
    .desktop-header { display: none; }
    .hero h1 { font-size: 2.5rem; }
}

@media (min-width: 769px) {
    .mobile-nav { display: none; }
    body { padding-bottom: 0; }
    .product-card { flex: 0 0 300px; }
    .features-grid { grid-template-columns: repeat(4, 1fr); }
    .hero-content { margin: 0 auto; }
    .hero { padding-top: 80px; }
}

/* --- 15. الحركات (Animations) --- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}