/* DeepSeek Design System - Liquid Glass with Colorful Background */
:root {
    /* DeepSeek Colors */
    --ds-primary: #6C2BD9;
    --ds-primary-light: #8A559A;
    --ds-primary-dark: #4A1D96;
    --ds-secondary: #1668DC;
    --ds-secondary-light: #4A90E2;
    --ds-accent: #B84592;
    --ds-purple: #9D4EDD;
    --ds-pink: #FF6B9D;
    --ds-cyan: #00D2FF;
    
    /* Glass Effects */
    --ds-glass-blur: blur(20px);
    --ds-glass-bg-light: rgba(255, 255, 255, 0.75);
    --ds-glass-bg-dark: rgba(10, 10, 15, 0.75);
    --ds-glass-border: rgba(108, 43, 217, 0.15);
    
    /* Spacing */
    --ds-spacing-xs: 8px;
    --ds-spacing-sm: 12px;
    --ds-spacing-md: 20px;
    --ds-spacing-lg: 32px;
    --ds-spacing-xl: 48px;
    --ds-spacing-2xl: 64px;
    
    /* Radius */
    --ds-radius-sm: 8px;
    --ds-radius-md: 12px;
    --ds-radius-lg: 20px;
    --ds-radius-xl: 28px;
    --ds-radius-2xl: 36px;
    --ds-radius-full: 9999px;
    
    /* Shadows */
    --ds-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --ds-shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
    --ds-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
    --ds-shadow-glow: 0 0 30px rgba(108, 43, 217, 0.25);
    
    /* Transitions */
    --ds-transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Cairo', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #F8F9FC 0%, #F0E6FF 50%, #E8F0FE 100%);
    color: #1A1A2E;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    position: relative;
}

/* Dark Mode - Colorful too! */
body.dark {
    background: linear-gradient(135deg, #0A0A0F 0%, #1A0A2E 50%, #0A1A2E 100%);
    color: #EDEDF0;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--ds-spacing-md);
}

/* Scroll offset for fixed header */
html {
    scroll-padding-top: 85px;
    scroll-behavior: smooth;
}

/* ========== FLOATING WHATSAPP BUTTON ========== */
.floating-wa {
    position: fixed;
    bottom: 24px;
    left: 24px;
    background: #25D366;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1);
    z-index: 1000;
    text-decoration: none;
}

.floating-wa:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.floating-wa:active {
    transform: scale(0.95);
}

.wa-tooltip {
    position: absolute;
    left: 70px;
    background: var(--ds-glass-bg-light);
    backdrop-filter: var(--ds-glass-blur);
    padding: 6px 12px;
    border-radius: var(--ds-radius-full);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    border: 1px solid var(--ds-glass-border);
}

.floating-wa:hover .wa-tooltip {
    opacity: 1;
}

/* ========== SCROLL TO TOP BUTTON ========== */
.scroll-top-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--ds-primary);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    border: none;
    cursor: pointer;
    box-shadow: var(--ds-shadow-md);
    transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
}

.scroll-top-btn.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--ds-shadow-lg);
}

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

/* ========== NAVBAR - شفاف بالكامل بدون تغيير عند التمرير ========== */
.ds-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: transparent;
    backdrop-filter: none;
    transition: var(--ds-transition);
    border-bottom: none;
}

/* إزالة أي تغيير عند التمرير - يبقى شفافاً كما هو */
.ds-navbar.scrolled {
    background: transparent;
    backdrop-filter: none;
    border-bottom: none;
}

body.dark .ds-navbar {
    background: transparent;
    border-bottom: none;
}

body.dark .ds-navbar.scrolled {
    background: transparent;
    border-bottom: none;
}

.ds-navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

/* ========== اللوجو (أحمد خليل) بنفس شكل الأزرار الجميلة ========== */
.ds-logo h2 {
    font-size: 0.875rem;
    font-weight: 500;
    background: rgba(108, 43, 217, 0.1);
    backdrop-filter: blur(4px);
    padding: 8px 20px;
    border-radius: 40px;
    display: inline-block;
    border: 1px solid rgba(108, 43, 217, 0.2);
    color: #5A5A72;
    background-clip: unset;
    -webkit-background-clip: unset;
}

body.dark .ds-logo h2 {
    background: rgba(108, 43, 217, 0.15);
    border-color: rgba(108, 43, 217, 0.3);
    color: #A0A0B0;
}

/* ========== الأزرار العلوية (الجميلة) ========== */
.ds-nav-links {
    display: flex;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.ds-nav-links a {
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 8px 20px;
    border-radius: 40px;
    color: #5A5A72;
    transition: all 0.2s cubic-bezier(0.2, 0.9, 0.4, 1.1);
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(108, 43, 217, 0.15);
}

body.dark .ds-nav-links a {
    color: #A0A0B0;
    background: rgba(20, 20, 35, 0.5);
    border-color: rgba(108, 43, 217, 0.25);
}

.ds-nav-links a:hover {
    color: var(--ds-primary);
    background: rgba(108, 43, 217, 0.15);
    transform: scale(0.97);
}

.ds-nav-links a.active {
    background: linear-gradient(135deg, var(--ds-primary), var(--ds-secondary));
    color: white;
    box-shadow: 0 2px 8px rgba(108, 43, 217, 0.3);
    border: none;
}

/* ========== أزرار اللغة والثيم بنفس شكل الأزرار ========== */
.ds-actions {
    display: flex;
    gap: 8px;
}

.ds-icon-btn {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(108, 43, 217, 0.15);
    padding: 8px 16px;
    border-radius: 40px;
    cursor: pointer;
    color: #5A5A72;
    transition: all 0.2s cubic-bezier(0.2, 0.9, 0.4, 1.1);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.ds-icon-btn:hover {
    color: var(--ds-primary);
    background: rgba(108, 43, 217, 0.15);
    transform: scale(0.97);
}

body.dark .ds-icon-btn {
    background: rgba(20, 20, 35, 0.5);
    border-color: rgba(108, 43, 217, 0.25);
    color: #A0A0B0;
}

body.dark .ds-icon-btn:hover {
    background: rgba(108, 43, 217, 0.25);
    color: var(--ds-primary-light);
}

/* ========== HERO SECTION ========== */
.ds-hero {
    padding: 0;
    margin-top: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ds-hero .container {
    width: 100%;
}

.ds-hero-content {
    display: flex;
    align-items: center;
    gap: var(--ds-spacing-xl);
    justify-content: space-between;
}

.ds-hero-text {
    flex: 1;
}

/* Floating Head Effect */
.ds-hero-image {
    flex-shrink: 0;
    width: 300px;
    height: 300px;
    position: relative;
}

.image-frame {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ds-primary), var(--ds-secondary), var(--ds-pink));
    padding: 3px;
    animation: floatImage 3s ease-in-out infinite;
    box-shadow: var(--ds-shadow-glow);
    position: relative;
    overflow: hidden;
}

.image-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    transition: all 0.3s ease;
    display: block;
    transform: scale(1);
}

@keyframes floatImage {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.ds-hero-image.floating-head .image-frame {
    overflow: visible;
}

.ds-hero-image.floating-head .image-frame img {
    transform: scale(1.05);
    margin-top: -5px;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 20%, transparent 60%, rgba(108, 43, 217, 0.1) 100%);
    pointer-events: none;
    z-index: 2;
}

.ds-hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(108, 43, 217, 0.12);
    backdrop-filter: blur(4px);
    border-radius: var(--ds-radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--ds-primary);
    margin-bottom: var(--ds-spacing-lg);
}

.ds-hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--ds-spacing-lg);
}

.ds-gradient-text {
    background: linear-gradient(135deg, var(--ds-primary), var(--ds-secondary), var(--ds-pink));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.ds-hero-description {
    font-size: 1rem;
    color: #5A5A72;
    max-width: 500px;
    margin-bottom: var(--ds-spacing-lg);
}

body.dark .ds-hero-description {
    color: #A0A0B0;
}

.ds-hero-tagline {
    display: inline-flex;
    align-items: center;
    gap: var(--ds-spacing-xs);
    padding: var(--ds-spacing-xs) var(--ds-spacing-md);
    background: var(--ds-glass-bg-light);
    backdrop-filter: var(--ds-glass-blur);
    border-radius: var(--ds-radius-full);
    font-size: 0.875rem;
    margin-bottom: var(--ds-spacing-lg);
    border: 1px solid var(--ds-glass-border);
}

/* Buttons */
.ds-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--ds-spacing-xs);
    padding: 10px 24px;
    border-radius: var(--ds-radius-full);
    font-weight: 600;
    font-size: 0.875rem;
    font-family: inherit;
    cursor: pointer;
    transition: var(--ds-transition);
    border: none;
    text-decoration: none;
}

.ds-btn-primary {
    background: linear-gradient(135deg, var(--ds-primary), var(--ds-secondary));
    color: white;
    box-shadow: 0 2px 12px rgba(108, 43, 217, 0.3);
}

.ds-btn-primary:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 20px rgba(108, 43, 217, 0.4);
}

.ds-btn-secondary {
    background: rgba(108, 43, 217, 0.1);
    color: var(--ds-primary);
    border: 1px solid var(--ds-glass-border);
}

.ds-btn-secondary:hover {
    background: rgba(108, 43, 217, 0.2);
    transform: scale(1.02);
}

/* Cards */
.ds-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: var(--ds-glass-blur);
    border-radius: var(--ds-radius-xl);
    padding: var(--ds-spacing-lg);
    transition: var(--ds-transition);
    border: 1px solid rgba(108, 43, 217, 0.12);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.ds-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.85);
    box-shadow: 0 8px 32px rgba(108, 43, 217, 0.15);
    border-color: rgba(108, 43, 217, 0.25);
}

body.dark .ds-card {
    background: rgba(20, 20, 35, 0.7);
}

body.dark .ds-card:hover {
    background: rgba(30, 30, 50, 0.85);
}

.ds-card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(108, 43, 217, 0.15), rgba(22, 104, 220, 0.1));
    border-radius: var(--ds-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--ds-spacing-md);
    font-size: 1.5rem;
    color: var(--ds-primary);
}

/* Section Styles */
.ds-section {
    padding: var(--ds-spacing-2xl) 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.ds-section.visible {
    opacity: 1;
    transform: translateY(0);
}

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

.ds-section-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(108, 43, 217, 0.1);
    backdrop-filter: blur(4px);
    border-radius: var(--ds-radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--ds-primary);
    margin-bottom: var(--ds-spacing-sm);
}

.ds-section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--ds-spacing-md);
    background: linear-gradient(135deg, var(--ds-primary), var(--ds-pink));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.ds-section-subtitle {
    color: #5A5A72;
    max-width: 600px;
    margin: 0 auto;
}

/* Grids */
.ds-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--ds-spacing-lg);
}

.ds-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--ds-spacing-md);
}

/* Portfolio */
.ds-portfolio-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: var(--ds-glass-blur);
    border-radius: var(--ds-radius-xl);
    overflow: hidden;
    transition: var(--ds-transition);
    border: 1px solid rgba(108, 43, 217, 0.12);
}

.ds-portfolio-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(108, 43, 217, 0.2);
}

.ds-portfolio-media {
    height: 220px;
    background: linear-gradient(135deg, var(--ds-primary), var(--ds-secondary), var(--ds-pink));
    display: flex;
    align-items: center;
    justify-content: center;
}

.ds-portfolio-icon {
    font-size: 4.5rem;
    color: white;
}

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

.ds-portfolio-type {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(108, 43, 217, 0.12);
    border-radius: var(--ds-radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--ds-primary);
    margin-bottom: var(--ds-spacing-sm);
}

/* Feature Cards */
.ds-feature-card {
    text-align: center;
    padding: var(--ds-spacing-lg);
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: var(--ds-glass-blur);
    border-radius: var(--ds-radius-xl);
    border: 1px solid rgba(108, 43, 217, 0.1);
    transition: var(--ds-transition);
}

.ds-feature-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(108, 43, 217, 0.25);
}

.ds-feature-icon {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--ds-primary), var(--ds-pink));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: var(--ds-spacing-md);
}

/* Tools */
.ds-tools {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: var(--ds-glass-blur);
    border-radius: var(--ds-radius-2xl);
    padding: var(--ds-spacing-xl);
    text-align: center;
    border: 1px solid rgba(108, 43, 217, 0.12);
}

.ds-chips {
    display: flex;
    justify-content: center;
    gap: var(--ds-spacing-sm);
    flex-wrap: wrap;
    margin: var(--ds-spacing-lg) 0;
}

.ds-chip {
    background: rgba(108, 43, 217, 0.1);
    padding: 8px 20px;
    border-radius: var(--ds-radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--ds-spacing-xs);
}

/* Stats */
.ds-stats {
    background: linear-gradient(135deg, var(--ds-primary), var(--ds-secondary), var(--ds-pink));
    border-radius: var(--ds-radius-2xl);
    padding: var(--ds-spacing-xl);
    color: white;
}

.ds-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--ds-spacing-lg);
    text-align: center;
}

.ds-stat-value {
    font-size: 3rem;
    font-weight: 800;
}

/* Contact */
.ds-contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--ds-spacing-xl);
}

.ds-contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--ds-spacing-sm);
}

.ds-contact-bubble {
    display: flex;
    align-items: center;
    gap: var(--ds-spacing-md);
    padding: var(--ds-spacing-md);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: var(--ds-glass-blur);
    border-radius: var(--ds-radius-xl);
    border: 1px solid rgba(108, 43, 217, 0.12);
    transition: var(--ds-transition);
}

.ds-contact-bubble:hover {
    transform: translateX(4px);
    background: rgba(255, 255, 255, 0.85);
}

.ds-contact-bubble a {
    text-decoration: none;
    color: inherit;
}

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

.ds-input {
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: var(--ds-glass-blur);
    border: 1px solid rgba(108, 43, 217, 0.15);
    border-radius: var(--ds-radius-lg);
    font-family: inherit;
    color: #1A1A2E;
    transition: var(--ds-transition);
}

.ds-input:focus {
    outline: none;
    border-color: var(--ds-primary);
    box-shadow: 0 0 0 3px rgba(108, 43, 217, 0.2);
    background: rgba(255, 255, 255, 0.9);
}

body.dark .ds-input {
    background: rgba(20, 20, 35, 0.7);
    color: #EDEDF0;
}

/* Footer */
.ds-footer {
    border-top: 1px solid rgba(108, 43, 217, 0.15);
    padding: var(--ds-spacing-xl) 0;
    margin-top: var(--ds-spacing-xl);
    backdrop-filter: var(--ds-glass-blur);
    background: rgba(255, 255, 255, 0.6);
}

body.dark .ds-footer {
    background: rgba(10, 10, 15, 0.6);
}

.ds-footer a {
    color: #5A5A72;
    text-decoration: none;
    transition: color 0.3s;
}

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

/* Responsive */
@media (max-width: 900px) {
    .ds-nav-links {
        position: fixed;
        top: 72px;
        right: 20px;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: var(--ds-glass-blur);
        flex-direction: column;
        gap: 8px;
        padding: 16px 20px;
        border-radius: 20px;
        display: none;
        text-align: center;
        box-shadow: var(--ds-shadow-lg);
        min-width: 160px;
        z-index: 999;
    }
    
    body.dark .ds-nav-links {
        background: rgba(20, 20, 35, 0.95);
    }
    
    .ds-nav-links.show {
        display: flex;
    }
    
    .ds-nav-links a {
        width: 100%;
        text-align: center;
    }
    
    .ds-hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .ds-hero-title {
        font-size: 2rem;
    }
    
    .ds-hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .ds-hero-image {
        width: 220px;
        height: 220px;
        margin-top: var(--ds-spacing-lg);
    }
    
    .ds-contact-grid {
        grid-template-columns: 1fr;
    }
    
    .ds-stats-grid {
        grid-template-columns: 1fr;
        gap: var(--ds-spacing-lg);
    }
    
    .ds-section-title {
        font-size: 1.75rem;
    }
    
    .ds-grid {
        grid-template-columns: 1fr;
    }
    
    html {
        scroll-padding-top: 70px;
    }
}