/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --color-primary: #1a365d;
    --color-primary-light: #2c5282;
    --color-secondary: #d69e2e;
    --color-secondary-light: #ecc94b;
    --color-background: #ffffff;
    --color-background-gray: #f7fafc;
    --color-text-dark: #1a202c;
    --color-text-medium: #4a5568;
    --color-text-light: #718096;
    --color-border: #e2e8f0;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Typography */
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    --line-height: 1.6;
    --line-height-relaxed: 1.8;
    
    /* Transitions */
    --transition-fast: 0.2s;
    --transition-normal: 0.3s;
    --transition-slow: 0.5s;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-text-dark);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Section */
.section {
    padding: var(--spacing-xxl) 0;
}

.section:nth-child(even) {
    background-color: var(--color-background-gray);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.section-desc {
    font-size: var(--font-size-lg);
    color: var(--color-text-medium);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 54, 93, 0.95);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal) ease;
}

.header.scrolled {
    background: rgba(26, 54, 93, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: baseline;
    color: var(--color-background);
    font-weight: 700;
    font-size: var(--font-size-xl);
}

.logo-text {
    color: var(--color-background);
}

.logo-reg {
    font-size: var(--font-size-xs);
    vertical-align: super;
    margin-left: 2px;
}

.logo-divider {
    margin: 0 var(--spacing-xs);
    color: var(--color-secondary);
}

.logo-slogan {
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--color-secondary-light);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-menu a {
    color: var(--color-background);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: 500;
    transition: color var(--transition-fast) ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: width var(--transition-normal) ease;
}

.nav-menu a:hover {
    color: var(--color-secondary-light);
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-background);
    transition: all var(--transition-normal) ease;
}

/* Hero Banner */
.hero-banner {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    text-align: center;
    color: var(--color-background);
    z-index: 10;
    padding: var(--spacing-lg);
    max-width: 800px;
}

.hero-title {
    margin-bottom: var(--spacing-md);
}

.hero-title-main {
    display: block;
    font-size: var(--font-size-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.hero-title-sub {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 500;
    color: var(--color-secondary-light);
}

.hero-desc {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    opacity: 0.9;
}

.hero-detail {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    opacity: 0.8;
    line-height: var(--line-height-relaxed);
}

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

.hero-decoration {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
}

.arabic-pattern {
    width: 100%;
    height: 100%;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 8px;
    font-size: var(--font-size-lg);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-normal) ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-secondary);
    color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-secondary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--color-background);
    border: 2px solid var(--color-background);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal) ease;
    border: 1px solid var(--color-border);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-secondary);
}

.service-icon {
    width: 48px;
    height: 48px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.service-desc {
    font-size: var(--font-size-base);
    color: var(--color-text-medium);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-relaxed);
}

.service-features {
    list-style: none;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.service-features li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 6px;
}

.service-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: bold;
}

/* Advantages */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.advantage-item {
    text-align: center;
    padding: var(--spacing-lg);
}

.advantage-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-xs);
}

.advantage-label {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.advantage-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-medium);
    line-height: var(--line-height-relaxed);
}

/* Cases */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.case-card {
    background: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.case-category {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-primary);
    color: var(--color-background);
    font-size: var(--font-size-xs);
    border-radius: 4px;
    margin-bottom: var(--spacing-sm);
}

.case-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-xs);
}

.case-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-medium);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-relaxed);
}

.case-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-background-gray);
    color: var(--color-text-light);
    font-size: var(--font-size-xs);
    border-radius: 4px;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    cursor: pointer;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
    list-style: none;
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question span {
    flex: 1;
}

.faq-icon {
    width: 24px;
    height: 24px;
    transition: transform var(--transition-normal) ease;
}

.faq-item[open] .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: var(--spacing-md);
    background: var(--color-background-gray);
    border-top: 1px solid var(--color-border);
}

.faq-answer p {
    color: var(--color-text-medium);
    line-height: var(--line-height-relaxed);
}

/* About */
.about-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.about-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.about-name {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.about-title {
    font-size: var(--font-size-lg);
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.about-bio p {
    font-size: var(--font-size-base);
    color: var(--color-text-medium);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-relaxed);
}

.about-highlights {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

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

.highlight-item strong {
    display: block;
    font-size: var(--font-size-xl);
    color: var(--color-secondary);
    margin-bottom: 4px;
}

.highlight-item span {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-medium);
}

/* Contact */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 200px;
    gap: var(--spacing-xl);
    align-items: start;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-background);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.contact-icon {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.contact-text {
    flex: 1;
}

.contact-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.contact-value {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
}

a.contact-value:hover {
    color: var(--color-secondary);
}

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

.contact-qr img {
    width: 180px;
    height: 180px;
    border-radius: 8px;
    margin-bottom: var(--spacing-xs);
}

.contact-qr p {
    font-size: var(--font-size-sm);
    color: var(--color-text-medium);
}

/* Links */
.links-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm) var(--spacing-md);
    justify-content: center;
}

.links-grid a {
    padding: 6px 12px;
    background: var(--color-background);
    color: var(--color-text-medium);
    text-decoration: none;
    font-size: var(--font-size-sm);
    border-radius: 4px;
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast) ease;
}

.links-grid a:hover {
    background: var(--color-primary);
    color: var(--color-background);
    border-color: var(--color-primary);
}

/* Footer */
.footer {
    background: var(--color-primary);
    color: var(--color-background);
    padding: var(--spacing-lg) 0;
}

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

.footer-copyright p {
    font-size: var(--font-size-sm);
    margin-bottom: 8px;
    opacity: 0.9;
}

.footer-copyright a {
    color: var(--color-secondary-light);
    text-decoration: none;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xxl: 3rem;
        --font-size-5xl: 2.5rem;
        --font-size-3xl: 1.75rem;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--color-primary);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        transform: translateY(-100%);
        opacity: 0;
        transition: all var(--transition-normal) ease;
        pointer-events: none;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-image {
        order: -1;
        max-width: 280px;
        margin: 0 auto;
    }
    
    .about-highlights {
        justify-content: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-qr {
        margin-top: var(--spacing-lg);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}

@media (max-width: 480px) {
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .about-highlights {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .links-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .links-grid a {
        width: 100%;
        text-align: center;
        max-width: 280px;
    }
}