/* common.css - Enterprise-grade global styles */

/* Import Font Awesome */
@font-face {
    font-family: 'Cairo';
    src: url('/assets/cairo-font/Cairo-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Cairo';
    src: url('/assets/cairo-font/Cairo-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* Design System Variables */
:root {
    /* Primary - Precision Teal */
    --primary: #039593;
    --primary-5: rgba(3, 149, 147, 0.05);
    --primary-10: rgba(3, 149, 147, 0.1);
    --primary-20: rgba(3, 149, 147, 0.2);
    --primary-30: rgba(3, 149, 147, 0.3);
    --primary-40: rgba(3, 149, 147, 0.4);
    --primary-50: rgba(3, 149, 147, 0.5);
    --primary-60: rgba(3, 149, 147, 0.6);
    --primary-70: rgba(3, 149, 147, 0.7);
    --primary-80: rgba(3, 149, 147, 0.8);
    --primary-90: rgba(3, 149, 147, 0.9);
    --primary-dark: #027a78;
    --primary-darker: #016160;
    --primary-light: #e0f7f6;
    
    /* Neutral System - Engineered Grayscale */
    --neutral-0: #FFFFFF;
    --neutral-25: #FCFDFD;
    --neutral-50: #F8FAFA;
    --neutral-75: #F2F5F5;
    --neutral-100: #E5EDED;
    --neutral-150: #D8E2E2;
    --neutral-200: #CCD8D8;
    --neutral-250: #B3C4C4;
    --neutral-300: #99AFAF;
    --neutral-350: #809B9B;
    --neutral-400: #667F7F;
    --neutral-450: #4D6363;
    --neutral-500: #334646;
    --neutral-550: #253535;
    --neutral-600: #1F2937;
    --neutral-650: #1A222E;
    --neutral-700: #151C26;
    --neutral-750: #10161E;
    --neutral-800: #0B0F15;
    --neutral-850: #06080C;
    --neutral-900: #030406;
    
    /* Surface Layering */
    --surface-1: var(--neutral-0);
    --surface-2: var(--neutral-25);
    --surface-3: var(--neutral-50);
    --surface-4: var(--neutral-75);
    
    /* Shadow System - Engineered Depth */
    --shadow-none: none;
    --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.02), 0 0 0 1px rgba(0, 0, 0, 0.01);
    --shadow-2: 0 2px 4px rgba(0, 0, 0, 0.02), 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-3: 0 4px 8px rgba(0, 0, 0, 0.03), 0 2px 4px rgba(0, 0, 0, 0.03);
    --shadow-4: 0 8px 16px rgba(0, 0, 0, 0.04), 0 4px 8px rgba(0, 0, 0, 0.04);
    --shadow-5: 0 16px 32px rgba(0, 0, 0, 0.05), 0 8px 16px rgba(0, 0, 0, 0.04);
    --shadow-6: 0 24px 48px rgba(0, 0, 0, 0.06), 0 12px 24px rgba(0, 0, 0, 0.05);
    --shadow-7: 0 32px 64px rgba(0, 0, 0, 0.08), 0 16px 32px rgba(0, 0, 0, 0.06);
    
    /* Border Radius - Continuous Geometry */
    --radius-0: 0;
    --radius-1: 4px;
    --radius-2: 8px;
    --radius-3: 12px;
    --radius-4: 16px;
    --radius-5: 20px;
    --radius-6: 24px;
    --radius-7: 32px;
    --radius-8: 40px;
    --radius-full: 9999px;
    
    /* Spacing - Mathematical Scale (1.25 ratio) */
    --space-0: 0;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-7: 32px;
    --space-8: 40px;
    --space-9: 48px;
    --space-10: 56px;
    --space-11: 64px;
    --space-12: 80px;
    --space-13: 96px;
    --space-14: 112px;
    --space-15: 128px;
    --space-16: 160px;
    
    /* Typography - Refined Scale */
    --text-xxs: 10px;
    --text-xs: 12px;
    --text-sm: 14px;
    --text-base: 16px;
    --text-md: 18px;
    --text-lg: 20px;
    --text-xl: 24px;
    --text-2xl: 28px;
    --text-3xl: 32px;
    --text-4xl: 38px;
    --text-5xl: 44px;
    --text-6xl: 52px;
    --text-7xl: 64px;
    
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    --leading-tight: 1.2;
    --leading-normal: 1.5;
    --leading-relaxed: 1.6;
    --leading-loose: 1.7;
    
    --tracking-tight: -0.02em;
    --tracking-normal: -0.01em;
    --tracking-wide: 0;
    
    /* Transitions - Smooth Engineering */
    --transition-instant: 0.05s ease;
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.35s ease;
    --transition-slower: 0.5s ease;
    
    /* Z-Index Hierarchy */
    --z-below: -1;
    --z-elevate: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-header: 300;
    --z-overlay: 400;
    --z-sidebar: 500;
    --z-modal: 600;
    --z-toast: 700;
    --z-tooltip: 800;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Cairo', sans-serif;
    background-color: var(--surface-1);
    color: var(--neutral-600);
    line-height: var(--leading-normal);
    direction: rtl;
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    overflow-x: hidden;
}

body.sidebar-open {
    overflow: hidden;
}

/* Selection */
::selection {
    background-color: var(--primary-20);
    color: var(--primary-dark);
}

/* Links */
a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-fast);
}

/* Lists */
ul,
ol {
    list-style: none;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

/* Container - Precision Grid */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-7);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-5);
    }
}

/* Typography System */
h1, .h1 {
    font-size: var(--text-7xl);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--neutral-650);
}

h2, .h2 {
    font-size: var(--text-5xl);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--neutral-650);
}

h3, .h3 {
    font-size: var(--text-3xl);
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    color: var(--neutral-600);
}

h4, .h4 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    line-height: var(--leading-normal);
    color: var(--neutral-550);
}

/* Button System - Engineered */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-7);
    border-radius: var(--radius-3);
    font-family: 'Cairo', sans-serif;
    font-weight: var(--font-medium);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    letter-spacing: var(--tracking-normal);
}

.btn-primary {
    background-color: var(--primary);
    color: var(--neutral-0);
    box-shadow: var(--shadow-1);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-3);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-1);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--primary-30);
    color: var(--primary);
    backdrop-filter: blur(8px);
}

.btn-outline:hover {
    background-color: var(--primary-5);
    border-color: var(--primary);
    transform: translateY(-1px);
}

.btn-outline:active {
    transform: translateY(0);
}

/* Header - Dark Brand Color */
.header {
    background-color: var(--primary-dark);
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    box-shadow: var(--shadow-2);
    height: 100px;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-7);
    max-width: 1280px;
    margin: 0 auto;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.logo img {
    height: 54px;
    width: auto;
    transition: transform var(--transition-base);
    transform: scale(1.2);
}

.logo:hover img {
    transform: scale(1.02);
}

/* Mobile Menu Toggle - Minimal */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    flex-direction: column;
    gap: 5px;
    z-index: var(--z-sidebar);
    position: relative;
    order: -1;
}

.menu-toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background-color: var(--neutral-0);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

/* Overlay */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(3, 4, 6, 0.6);
    backdrop-filter: blur(4px);
    z-index: var(--z-overlay);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Sidebar - Precision Drawer */
.sidebar-nav {
    position: fixed;
    top: 0;
    right: -320px;
    width: 320px;
    height: 100vh;
    background-color: var(--surface-1);
    z-index: var(--z-sidebar);
    transition: right var(--transition-slow);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-6);
}

.sidebar-nav.active {
    right: 0;
}

.sidebar-header {
    padding: var(--space-8) var(--space-7);
    border-bottom: 1px solid var(--neutral-100);
    background-color: var(--primary-dark);
}

.sidebar-header img {
    height: 44px;
    width: auto;
    transform: scale(1.6);
}

.sidebar-menu {
    flex: 1;
    padding: var(--space-7);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--neutral-500);
    font-weight: var(--font-medium);
    border-radius: var(--radius-2);
    transition: all var(--transition-fast);
    letter-spacing: var(--tracking-normal);
}

.sidebar-link-icon {
    width: 20px;
    font-size: var(--text-base);
    color: var(--primary);
}

.sidebar-link-text {
    flex: 1;
}

.sidebar-link:hover {
    background-color: var(--primary-5);
    color: var(--primary);
}

.sidebar-link.active {
    background-color: var(--primary);
    color: var(--neutral-0);
}

.sidebar-footer {
    padding: var(--space-7);
    border-top: 1px solid var(--neutral-100);
}

.sidebar-social {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
}

.sidebar-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--surface-3);
    border-radius: var(--radius-2);
    border: 0.5px solid var(--neutral-300);
    color: var(--neutral-500);
    transition: all var(--transition-base);
    font-size: var(--text-lg);
}

.sidebar-social a:hover {
    background-color: var(--primary);
    color: var(--neutral-0);
    transform: translateY(-2px);
}

/* Desktop Navigation - Dark Header */
.nav-menu {
    display: flex;
    gap: var(--space-8);
}

.nav-link {
    font-weight: var(--font-medium);
    color: var(--neutral-0);
    transition: all var(--transition-fast);
    position: relative;
    padding: var(--space-2) 0;
    letter-spacing: var(--tracking-normal);
    opacity: 0.85;
}

.nav-link:hover {
    opacity: 1;
    color: var(--neutral-0);
}

.nav-link.active {
    opacity: 1;
    font-weight: var(--font-semibold);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--neutral-0);
    border-radius: var(--radius-full);
    transform: scaleX(1);
}

/* Footer - 3 Columns */
.footer {
    background-color: var(--neutral-50);
    color: var(--neutral-500);
    padding: var(--space-6) 0 var(--space-4);
    border-top: 1px solid var(--neutral-100);
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-7);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr;
    gap: var(--space-11);
    margin-bottom: var(--space-11);
}

.footer-section {
    display: flex;
    flex-direction: column;
}

/* Footer Logos - 3 logos in a row */
.footer-logos {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.footer-logo-link {
    display: inline-flex;
    transition: transform var(--transition-base);
}

.footer-logo-link:hover {
    transform: scale(1.05);
}

.footer-logo {
    height: 80px;
    width: auto;
    display: block;
    border-radius: var(--radius-full);
    border: 0.5px solid var(--neutral-250);
}

.footer-section p {
    color: var(--neutral-400);
    line-height: var(--leading-relaxed);
    font-size: var(--text-sm);
    max-width: 280px;
    margin-bottom: var(--space-4);
}

/* Footer Social Links - Under first column text */
.footer-social {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    margin-top: var(--space-2);
}

.footer-social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--surface-1);
    border-radius: var(--radius-2);
    color: var(--primary);
    transition: all var(--transition-base);
    border: 1px solid var(--neutral-100);
    font-size: var(--text-base);
}

.footer-social-link:hover {
    background-color: var(--primary-dark);
    color: var(--neutral-0);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.footer-section h4 {
    color: var(--primary-dark);
    margin-bottom: var(--space-5);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    color: var(--neutral-400);
    transition: all var(--transition-fast);
    font-size: var(--text-sm);
}

.footer-links a:hover {
    color: var(--primary);
    transform: translateX(-3px);
}

/* Footer Store Link */
.footer-store-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--neutral-400);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
    margin-top: var(--space-3);
}

.footer-store-link i {
    color: var(--primary);
    font-size: var(--text-base);
}

.footer-store-link:hover {
    color: var(--primary);
    transform: translateX(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-7);
    border-top: 1px solid var(--neutral-100);
}

.footer-copyright {
    font-size: var(--text-sm);
    color: var(--neutral-400);
    margin-bottom: var(--space-1);
}

.footer-legal {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
    margin-bottom: var(--space-1);
    font-size: var(--text-xs);
}

.footer-legal a {
    color: var(--neutral-400);
    transition: color var(--transition-fast);
}

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

.separator {
    color: var(--neutral-200);
}

.footer-dev {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-size: var(--text-xxs);
    color: var(--neutral-400);
}

.footer-dev a {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--neutral-400);
    transition: color var(--transition-fast);
}

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

.footer-dev img {
    height: 12px;
    width: auto;
    opacity: 0.6;
}

/* WhatsApp Float - Refined */
.whatsapp-float {
    position: fixed;
    bottom: var(--space-7);
    left: var(--space-7);
    background-color: #25D366;
    color: var(--neutral-0);
    width: 52px;
    height: 52px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-4);
    transition: all var(--transition-base);
    z-index: var(--z-toast);
    border: none;
}

.whatsapp-float:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-6);
}

.whatsapp-float svg {
    width: 24px;
    height: 24px;
    fill: var(--neutral-0);
}

/* Responsive - Mobile Refinement */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
    }

    .header-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .logo {
        order: -1;
    }

    .menu-toggle {
        order: 1;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-8);
    }

    .footer-section {
        align-items: center;
    }

    .footer-section p {
        max-width: 100%;
    }

    .footer-logos {
        justify-content: center;
    }

    .footer-logo {
        height: 60px;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-links a:hover {
        transform: translateX(0);
    }

    .whatsapp-float {
        width: 44px;
        height: 44px;
        bottom: var(--space-5);
        left: var(--space-5);
    }
    
    .whatsapp-float svg {
        width: 20px;
        height: 20px;
    }

    .footer-legal {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .separator {
        display: inline-block;
    }
}

/* Utility Classes - Precision */
.text-center {
    text-align: center;
}

.text-primary {
    color: var(--primary);
}

.text-white {
    color: var(--neutral-0);
}

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

.bg-white {
    background-color: var(--neutral-0);
}

/* Spacing Utilities */
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-10 { margin-top: var(--space-10); }
.mt-12 { margin-top: var(--space-12); }

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-10 { margin-bottom: var(--space-10); }
.mb-12 { margin-bottom: var(--space-12); }

.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }

/* Section Title - Refined */
.section-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--neutral-650);
    margin-bottom: var(--space-10);
    text-align: center;
    letter-spacing: var(--tracking-tight);
}

.section-title span {
    color: var(--primary);
}

/* Card System - Engineered Surfaces */
.card {
    background: var(--surface-1);
    border-radius: var(--radius-4);
    padding: var(--space-7);
    box-shadow: var(--shadow-1);
    transition: all var(--transition-base);
    border: 1px solid var(--neutral-100);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-4);
    border-color: var(--neutral-150);
}