/* ========================================
   Custom CSS for Arafat Mohammed Portfolio
   ======================================== */

/* === Root Variables === */
:root {
    /* Colors */
    --color-primary-500: #0057FF;
    --color-primary-700: #0043C8;
    --color-primary-100: #E6EFFF;
    
    --color-bg-page: #F8F9FA;
    --color-bg-surface: #FFFFFF;
    --color-text-primary: #111827;
    --color-text-secondary: #6B7280;
    --color-border: #E5E7EB;
    
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    
    /* Spacing */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 64px;
    --space-3xl: 96px;
    
    /* Typography */
    --font-family: 'Tajawal', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    
    /* Layout */
    --max-width: 1280px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 300ms ease-out;
}

/* === Global Styles === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background-color: var(--color-bg-page);
    line-height: 1.7;
    font-size: 18px;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

/* === Navigation === */
.navbar {
    padding: var(--space-sm) 0;
    transition: all var(--transition-base);
}

.navbar-brand {
    font-size: 24px;
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

.navbar-brand:hover {
    color: var(--color-primary-500);
}

.brand-name {
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    padding: var(--space-xs) var(--space-sm);
    margin: 0 var(--space-xs);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 50%;
    width: 0;
    height: 2px;
    background: var(--color-primary-500);
    transition: all var(--transition-base);
}

.nav-link:hover {
    color: var(--color-primary-500);
}

.nav-link:hover::after {
    width: 100%;
    right: 0;
}

/* === Buttons === */
.btn-primary-custom {
    background: var(--color-primary-500);
    color: #FFFFFF;
    border: none;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 16px;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.btn-primary-custom:hover {
    background: var(--color-primary-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: #FFFFFF;
}

.btn-primary-custom:active {
    transform: scale(0.98);
}

/* === Hero Section === */
.hero-section {
    position: relative;
    min-height: 560px;
    display: flex;
    align-items: center;
    padding: var(--space-3xl) 0;
    background: linear-gradient(135deg, #F8F9FA 0%, #E6EFFF 100%);
    overflow: hidden;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-primary-100);
    color: var(--color-primary-500);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    animation: fadeInDown 0.6s ease-out;
}

.icon-small {
    width: 18px;
    height: 18px;
}

.hero-title {
    font-size: 60px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-subtitle {
    font-size: 32px;
    font-weight: 600;
    color: var(--color-primary-500);
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-description {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto var(--space-xl);
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* Hero Background Elements */
.hero-bg-element {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 87, 255, 0.1), rgba(0, 67, 200, 0.05));
    filter: blur(60px);
    animation: float 20s ease-in-out infinite;
}

.element-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
}

.element-2 {
    width: 300px;
    height: 300px;
    bottom: -50px;
    left: -50px;
    animation-delay: -5s;
}

.element-3 {
    width: 200px;
    height: 200px;
    top: 50%;
    left: 50%;
    animation-delay: -10s;
}

/* === Section Styles === */
.services-section,
.contact-section {
    padding: var(--space-3xl) 0;
}

.section-header {
    margin-bottom: var(--space-2xl);
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-primary-500);
    margin-bottom: var(--space-xs);
}

.section-description {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* === Service Cards === */
.service-card {
    background: var(--color-bg-surface);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    height: 100%;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-slow);
    border: 1px solid var(--color-border);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-100);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: var(--color-primary-100);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    transition: all var(--transition-base);
}

.service-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-primary-500);
}

.service-card:hover .service-icon {
    background: var(--color-primary-500);
    transform: scale(1.05);
}

.service-card:hover .service-icon svg {
    color: #FFFFFF;
}

.service-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.service-description {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.service-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) 0;
    font-size: 15px;
    color: var(--color-text-secondary);
}

.check-icon {
    width: 20px;
    height: 20px;
    color: var(--color-success);
    flex-shrink: 0;
}

/* === CTA Section === */
.cta-section {
    padding: var(--space-3xl) 0;
    background: linear-gradient(
        135deg, 
        #4F46E5 0%,
        #7C3AED 50%,
        #9333EA 100%
    );
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
}

/* باترن بسيط وأنيق */
.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.08) 2px, transparent 2px),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 60px 60px, 40px 40px, 80px 80px;
    background-position: 0 0, 30px 30px, 0 0;
    animation: gentleFloat 15s ease-in-out infinite;
    opacity: 0.8;
}

/* تأثيرات بسيطة للحركة */
.cta-section::after {
    content: '';
    position: absolute;
    top: -100%;
    left: -100%;
    width: 300%;
    height: 300%;
    background: 
        linear-gradient(45deg, transparent 35%, rgba(255, 255, 255, 0.02) 50%, transparent 65%);
    animation: slowRotate 30s linear infinite;
}

@keyframes gentleFloat {
    0%, 100% {
        background-position: 0 0, 30px 30px, 0 0;
    }
    50% {
        background-position: 10px -10px, 40px 20px, -10px 10px;
    }
}

@keyframes slowRotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 2;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.cta-description {
    font-size: 1.125rem;
    margin-bottom: var(--space-xl);
    position: relative;
    z-index: 2;
    opacity: 0.95;
    line-height: 1.6;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section .btn-light {
    background: #FFFFFF;
    color: #7C3AED;
    border: none;
    font-weight: 600;
    padding: 0.875rem 2.5rem;
    font-size: 1.125rem;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
    transition: all var(--transition-base);
    position: relative;
    z-index: 2;
}

.cta-section .btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
    background: #F8F9FA;
    color: #4F46E5;
}

/* تأثيرات للشاشات الصغيرة */
@media (max-width: 768px) {
    .cta-section {
        padding: var(--space-2xl) 0;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .cta-description {
        font-size: 1rem;
        margin-bottom: var(--space-lg);
    }
    
    .cta-section .btn-light {
        padding: 0.75rem 2rem;
        font-size: 1rem;
    }
}

.cta-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: var(--space-md);
    position: relative;
}

.cta-description {
    font-size: 20px;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    position: relative;
}

.btn-light {
    background: #FFFFFF;
    color: var(--color-primary-500);
    font-weight: 600;
    border: none;
    padding: 16px 48px;
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
}

.btn-light:hover {
    background: var(--color-primary-100);
    color: var(--color-primary-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* === Contact Section === */
.contact-card {
    background: var(--color-bg-surface);
    border-radius: var(--border-radius);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: var(--color-primary-100);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.contact-icon svg {
    width: 40px;
    height: 40px;
    color: var(--color-primary-500);
}

.contact-info h3 {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.contact-info p {
    font-size: 16px;
    color: var(--color-text-secondary);
}

.icon-inline {
    width: 20px;
    height: 20px;
    display: inline-block;
    vertical-align: middle;
}

/* === Footer === */
.footer {
    background: var(--color-text-primary);
    color: #FFFFFF;
    padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-brand {
    font-size: 28px;
    font-weight: 700;
    color: #FFFFFF;
}

.footer-tagline {
    font-size: 16px;
    opacity: 0.8;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 16px;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: #FFFFFF;
}

.footer-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: var(--space-lg) 0;
}

.footer-copyright {
    font-size: 14px;
    opacity: 0.7;
    margin: 0;
}

/* === Scroll to Top Button === */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-primary-500);
    color: #FFFFFF;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
}

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

.scroll-to-top:hover {
    background: var(--color-primary-700);
    transform: translateY(-4px);
}

.scroll-to-top svg {
    width: 24px;
    height: 24px;
}

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(20px, -20px) scale(1.05);
    }
    50% {
        transform: translate(-15px, 15px) scale(0.95);
    }
    75% {
        transform: translate(15px, 10px) scale(1.02);
    }
}

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

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 48px;
    }
    
    .hero-subtitle {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 40px;
    }
    
    .cta-title {
        font-size: 40px;
    }
}

/* Mobile (< 768px) */
@media (max-width: 767px) {
    body {
        font-size: 16px;
    }
    
    /* Hero Section */
    .hero-section {
        min-height: auto;
        padding: var(--space-2xl) 0;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: 24px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    /* Sections */
    .services-section,
    .contact-section,
    .cta-section {
        padding: var(--space-2xl) 0;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .section-subtitle {
        font-size: 18px;
    }
    
    .section-description {
        font-size: 16px;
    }
    
    /* Service Cards */
    .service-card {
        padding: var(--space-md);
        margin-bottom: var(--space-md);
    }
    
    .service-title {
        font-size: 20px;
    }
    
    .service-description {
        font-size: 15px;
    }
    
    /* CTA Section */
    .cta-section {
        padding: var(--space-2xl) 0;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .cta-description {
        font-size: 1rem;
        margin-bottom: var(--space-lg);
    }
    
    .cta-section .btn-light {
        padding: 0.75rem 2rem;
        font-size: 1rem;
    }
    
    /* Contact */
    .contact-card {
        padding: var(--space-lg);
    }
    
    .contact-info h3 {
        font-size: 24px;
    }
    
    /* Footer */
    .footer-links {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    /* Buttons */
    .btn-primary-custom,
    .btn-light {
        padding: 12px 24px;
        font-size: 15px;
    }
    
    /* Scroll to Top */
    .scroll-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        left: 20px;
    }
    
    /* Navigation */
    .navbar-nav {
        padding: var(--space-sm) 0;
    }
    
    .nav-link {
        padding: var(--space-xs) 0;
        margin: var(--space-xs) 0;
    }
    
    /* Background Elements - Reduce on Mobile */
    .hero-bg-element {
        opacity: 0.5;
    }
}

/* Small Mobile (< 480px) */
@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .cta-title {
        font-size: 28px;
    }
    
    .service-icon {
        width: 56px;
        height: 56px;
    }
    
    .service-icon svg {
        width: 28px;
        height: 28px;
    }
}

/* === Performance Optimizations === */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* === Print Styles === */
@media print {
    .navbar,
    .scroll-to-top,
    .cta-section {
        display: none;
    }
    
    body {
        background: white;
    }
    
    .service-card {
        page-break-inside: avoid;
    }
}