/* ===== CSS Variables ===== */
:root {
    --color-primary: #1a3a5c;
    --color-primary-light: #2563eb;
    --color-primary-dark: #0f2640;
    --color-accent: #3b82f6;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-text-muted: #94a3b8;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-dark: #0f2640;
    --color-border: #e2e8f0;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-white: #ffffff;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Roboto Mono', monospace;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.15);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --header-height: 72px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul { list-style: none; }

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

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

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Top Bar ===== */
.top-bar {
    background: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.85);
    padding: 8px 0;
    font-size: 13px;
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.top-bar-left {
    display: flex;
    gap: 24px;
}

.top-bar-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.top-bar-item svg {
    opacity: 0.7;
}

.lang-switcher {
    display: flex;
    gap: 4px;
}

.lang-btn {
    color: rgba(255, 255, 255, 0.6);
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    transition: var(--transition);
}

.lang-btn:hover {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.1);
}

.lang-btn.active {
    color: var(--color-white);
    background: var(--color-primary-light);
}

/* ===== Header ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    color: var(--color-primary);
    display: flex;
    animation: spin 20s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-name {
    font-size: 20px;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

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

.logo-tagline {
    font-size: 10px;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-light);
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
}

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

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary-light);
    color: var(--color-white);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-white);
}

.btn-full {
    width: 100%;
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0f2640 0%, #1a3a5c 40%, #2563eb 100%);
    color: var(--color-white);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 50% 80%, rgba(59, 130, 246, 0.08) 0%, transparent 50%);
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 80px 24px;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -1.5px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 20px;
    line-height: 1.6;
    max-width: 700px;
    margin: 0 auto 36px;
    opacity: 0.9;
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

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

.hero-stat-num {
    display: block;
    font-size: 36px;
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: 4px;
}

.hero-stat-label {
    font-size: 13px;
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
}

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

.section-label {
    display: inline-block;
    color: var(--color-primary-light);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -1px;
    margin-bottom: 0;
}

.section-desc {
    font-size: 17px;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 16px auto 0;
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    font-size: 16px;
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 28px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

.about-feature svg {
    color: var(--color-success);
    flex-shrink: 0;
}

.about-visual {
    display: flex;
    justify-content: center;
}

.about-card {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    border-radius: var(--radius-xl);
    padding: 48px;
    text-align: center;
    box-shadow: var(--shadow-xl);
    max-width: 400px;
}

.about-card-icon {
    display: inline-flex;
    margin-bottom: 24px;
    opacity: 0.9;
}

.about-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.about-card p {
    font-size: 14px;
    opacity: 0.8;
    margin-bottom: 28px;
    line-height: 1.6;
}

.about-card-regions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.about-card-regions span {
    background: rgba(255, 255, 255, 0.15);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 500;
}

/* ===== Products ===== */
.product-categories {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-categories-two {
    grid-template-columns: repeat(2, 1fr);
    max-width: 700px;
    margin: 0 auto;
}

.product-categories-two .product-card-img {
    height: 200px;
}

.product-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.product-card-img {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.9);
}

.product-card-img svg {
    transition: transform 0.4s ease;
}

.product-card:hover .product-card-img svg {
    transform: scale(1.15) rotate(5deg);
}

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

.product-card-body h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

.product-card-body p {
    font-size: 13px;
    color: var(--color-text-light);
    line-height: 1.5;
    margin-bottom: 12px;
}

.product-card-tag {
    display: inline-block;
    background: var(--color-bg-alt);
    color: var(--color-primary);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
}

/* ===== Advantages ===== */
.advantages {
    background: var(--color-bg-alt);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.advantage-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 36px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.advantage-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(59, 130, 246, 0.05));
    border-radius: var(--radius-md);
    color: var(--color-primary-light);
    margin-bottom: 20px;
}

.advantage-card h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 10px;
}

.advantage-card p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

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

.contact-info-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(59, 130, 246, 0.05));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary-light);
}

.contact-info-item h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 4px;
}

.contact-info-item p {
    font-size: 14px;
    color: var(--color-text-light);
}

.contact-form-wrap {
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text);
    background: var(--color-white);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-success {
    display: none;
    text-align: center;
    padding: 24px;
    color: var(--color-success);
}

.form-success.show {
    display: block;
}

.form-success svg {
    margin: 0 auto 12px;
}

/* ===== Footer ===== */
.footer {
    background: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 64px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .logo-name {
    color: var(--color-white);
}

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

.footer-brand p {
    font-size: 14px;
    line-height: 1.6;
    max-width: 300px;
}

.footer-col h4 {
    color: var(--color-white);
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a,
.footer-col ul li {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--color-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--color-primary-light);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .product-categories {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .hero-title {
        font-size: 44px;
    }

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

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-200%);
        transition: transform 0.3s ease;
        box-shadow: var(--shadow-lg);
    }

    .nav.open {
        transform: translateY(0);
    }

    .menu-toggle {
        display: flex;
    }

    .top-bar-left {
        display: none;
    }

    .hero {
        min-height: 500px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 280px;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .hero-stat-num {
        font-size: 28px;
    }

    .section {
        padding: 64px 0;
    }

    .section-title {
        font-size: 28px;
    }

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

    .product-categories-two {
        grid-template-columns: 1fr;
    }

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

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

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form-wrap {
        padding: 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .top-bar-inner {
        justify-content: flex-end;
    }
}

@media (max-width: 480px) {
    .product-categories {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        grid-template-columns: 1fr 1fr;
    }

    .hero-title {
        font-size: 26px;
    }

    .logo-tagline {
        display: none;
    }
}

/* ===== RTL Support for Arabic ===== */
[dir="rtl"] {
    text-align: right;
}

[dir="rtl"] .nav,
[dir="rtl"] .hero-actions,
[dir="rtl"] .hero-stats {
    direction: rtl;
}