/* ==================== CSS Variables ==================== */
:root {
    /* Brand Colors */
    --color-primary: #a855f7;
    --color-primary-dark: #9333ea;
    --color-primary-light: #e9d5ff;
    --color-secondary: #3b82f6;
    --color-secondary-dark: #2563eb;
    --color-secondary-light: #dbeafe;

    /* Feature Colors */
    --color-blue: #1d4ed8;
    --color-blue-light: #dbeafe;
    --color-green: #15803d;
    --color-green-light: #dcfce7;
    --color-purple: #7e22ce;
    --color-purple-light: #f3e8ff;
    --color-orange: #c2410c;
    --color-orange-light: #ffedd5;
    --color-red: #b91c1c;
    --color-red-light: #fee2e2;
    --color-teal: #0f766e;
    --color-teal-light: #ccfbf1;

    /* Neutral Colors */
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    /* Typography */
    --font-family: 'IBM Plex Sans Arabic', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    --font-size-xs: 14px;
    --font-size-sm: 16px;
    --font-size-md: 18px;
    --font-size-lg: 20px;
    --font-size-xl: 24px;
    --font-size-2xl: 30px;
    --font-size-3xl: 36px;
    --font-size-4xl: 44px;
    --font-size-5xl: 56px;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    --spacing-4xl: 96px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition: all 0.3s ease;
}

/* ==================== Reset & Base Styles ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--color-gray-800);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-primary-light) 100%);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ==================== Navigation ==================== */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--color-gray-200);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-gray-700);
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--color-primary);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

/* ==================== Buttons ==================== */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: white;
    color: var(--color-primary);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid var(--color-primary);
}

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

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* ==================== Hero Section ==================== */
.hero {
    padding: var(--spacing-4xl) 0 var(--spacing-3xl);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.5;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.hero-features-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-gray-700);
    font-weight: 500;
}

.check-icon {
    width: 20px;
    height: 20px;
    color: var(--color-green);
}

/* Hero Image Mockup */
.hero-image {
    animation: fadeInRight 0.8s ease;
}

.hero-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
}

.card-header {
    background: var(--color-gray-100);
    padding: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 1px solid var(--color-gray-200);
}

.card-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-gray-300);
}

.card-content {
    padding: var(--spacing-lg);
}

.mock-app {
    display: flex;
    gap: var(--spacing-md);
    height: 400px;
}

.mock-sidebar {
    width: 80px;
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.mock-sidebar-item {
    height: 50px;
    background: var(--color-gray-200);
    border-radius: var(--radius-sm);
}

.mock-sidebar-item.active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

.mock-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.mock-header {
    height: 60px;
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
}

.mock-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    flex: 1;
}

.mock-grid-item {
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
}

/* ==================== Section Headers ==================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: var(--font-size-xl);
    color: var(--color-gray-600);
}

/* ==================== Features Section ==================== */
.features {
    padding: var(--spacing-3xl) 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-card.blue { border-top: 4px solid var(--color-blue); }
.feature-card.green { border-top: 4px solid var(--color-green); }
.feature-card.purple { border-top: 4px solid var(--color-purple); }
.feature-card.orange { border-top: 4px solid var(--color-orange); }
.feature-card.red { border-top: 4px solid var(--color-red); }
.feature-card.teal { border-top: 4px solid var(--color-teal); }

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.feature-card.blue .feature-icon {
    background: var(--color-blue-light);
    color: var(--color-blue);
}

.feature-card.green .feature-icon {
    background: var(--color-green-light);
    color: var(--color-green);
}

.feature-card.purple .feature-icon {
    background: var(--color-purple-light);
    color: var(--color-purple);
}

.feature-card.orange .feature-icon {
    background: var(--color-orange-light);
    color: var(--color-orange);
}

.feature-card.red .feature-icon {
    background: var(--color-red-light);
    color: var(--color-red);
}

.feature-card.teal .feature-icon {
    background: var(--color-teal-light);
    color: var(--color-teal);
}

.feature-icon svg {
    width: 30px;
    height: 30px;
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.feature-card ul {
    list-style: none;
    padding: 0;
}

.feature-card ul li {
    color: var(--color-gray-700);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    font-size: var(--font-size-sm);
}

.feature-card ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    font-weight: 700;
}

.feature-card.blue ul li::before { color: var(--color-blue); }
.feature-card.green ul li::before { color: var(--color-green); }
.feature-card.purple ul li::before { color: var(--color-purple); }
.feature-card.orange ul li::before { color: var(--color-orange); }
.feature-card.red ul li::before { color: var(--color-red); }
.feature-card.teal ul li::before { color: var(--color-teal); }

/* ==================== Benefits Section ==================== */
.benefits {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-secondary-light) 100%);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.benefit-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.benefit-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary-light);
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    opacity: 0.5;
}

.benefit-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

.benefit-card p {
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ==================== Use Cases Section ==================== */
.use-cases {
    padding: var(--spacing-3xl) 0;
    background: white;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.use-case-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

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

.use-case-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.use-case-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.use-case-card p {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

/* ==================== Preview Section ==================== */
.preview {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-primary-light) 100%);
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.preview-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

.preview-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.preview-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.preview-image {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: var(--color-gray-100);
    max-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-image img {
    width: 100%;
    height: 100%;
    max-height: 500px;
    object-fit: contain;
    display: block;
    transition: var(--transition);
}

.preview-image:hover img {
    transform: scale(1.05);
}

/* ==================== Download Section ==================== */
.download {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
}

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

.download-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.download-content p {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.download-btn {
    background: white;
    color: var(--color-gray-800);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.download-btn svg {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.download-btn div {
    text-align: left;
}

.download-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.download-platform {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-gray-900);
}

.system-requirements {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.system-requirements h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.system-requirements p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* ==================== Footer ==================== */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    max-width: 400px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    height: 32px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-column a {
    color: var(--color-gray-300);
    text-decoration: none;
    transition: var(--transition);
    font-size: var(--font-size-sm);
}

.footer-column a:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-800);
}

.footer-bottom p {
    font-size: var(--font-size-sm);
}

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ==================== Responsive Design ==================== */

/* Tablets (768px and below) */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        gap: var(--spacing-md);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-lg);
    }

    .hero-cta {
        flex-direction: column;
    }

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

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

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

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

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .download-btn {
        width: 100%;
        max-width: 300px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

/* Mobile Phones (480px and below) */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-2xl) 0;
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-md);
    }

    .hero-features-list {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .section-header h2 {
        font-size: var(--font-size-2xl);
    }

    .section-header p {
        font-size: var(--font-size-md);
    }

    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .download-content h2 {
        font-size: var(--font-size-2xl);
    }

    .download-content p {
        font-size: var(--font-size-md);
    }

    .mock-app {
        height: 300px;
    }

    .mock-sidebar {
        width: 60px;
        padding: var(--spacing-sm);
    }

    .mock-sidebar-item {
        height: 40px;
    }
}

/* Large screens optimization */
@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }
}