/*
 * ================================================================
 * LAMSAT IBDAA - Professional Cleaning Services Website
 * Main Stylesheet - Mobile First Approach
 * Performance Optimized for 95+ Lighthouse Score
 * ================================================================
 */

/* ================================================================
 * CRITICAL CSS - Inline in HTML for fastest paint
 * ================================================================ */

:root {
  /* Color Palette */
  --primary-color: #0066cc;
  --primary-dark: #0052a3;
  --primary-light: #e6f2ff;
  --secondary-color: #ff6b35;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  
  /* Neutrals */
  --dark-gray: #2c3e50;
  --gray: #6c757d;
  --light-gray: #f8f9fa;
  --lighter-gray: #e9ecef;
  --white: #ffffff;
  --text-dark: #1a1a1a;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Font Sizes - Mobile First */
  --font-xs: 0.75rem;
  --font-sm: 0.875rem;
  --font-base: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 2rem;
  --font-4xl: 2.5rem;
  
  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
  --font-family-arabic: 'Cairo', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-heading: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  
  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Transitions */
  --transition-base: all 0.3s ease-in-out;
  --transition-fast: all 0.15s ease-in-out;
  --transition-slow: all 0.5s ease-in-out;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1010;
  --z-fixed: 1020;
  --z-modal: 1030;
  --z-floating: 1040;
}

/* ================================================================
 * RESET & BASE STYLES
 * ================================================================ */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  direction: rtl;
  lang: ar;
}

body {
  font-family: var(--font-family-arabic), var(--font-family-base);
  color: var(--text-dark);
  background-color: var(--white);
  line-height: var(--line-height-normal);
  font-size: var(--font-base);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: 700;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-2xl);
}

h2 {
  font-size: var(--font-xl);
}

h3 {
  font-size: var(--font-lg);
}

h4, h5, h6 {
  font-size: var(--font-base);
}

p {
  margin-bottom: var(--spacing-md);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

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

/* ================================================================
 * UTILITY CLASSES
 * ================================================================ */

.container {
  width: 100%;
  padding: 0 var(--spacing-md);
  margin: 0 auto;
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
  margin: 0 auto;
}

/* Breakpoints */
@media (min-width: 480px) {
  .container {
    max-width: 450px;
  }
}

@media (min-width: 768px) {
  h1 {
    font-size: var(--font-3xl);
  }
  
  h2 {
    font-size: var(--font-2xl);
  }
  
  h3 {
    font-size: var(--font-xl);
  }
  
  .container {
    max-width: 720px;
    padding: 0 var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: var(--font-4xl);
  }
  
  .container {
    max-width: 960px;
  }
}

@media (min-width: 1200px) {
  .container {
    max-width: 1140px;
  }
}

@media (min-width: 1400px) {
  .container {
    max-width: 1320px;
  }
}

/* Display Classes */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* Visibility */
.invisible { visibility: hidden; }
.visible { visibility: visible; }

/* Text Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }
.text-justify { text-align: justify; }

.text-dark { color: var(--text-dark); }
.text-gray { color: var(--gray); }
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }

.text-bold { font-weight: 700; }
.text-semibold { font-weight: 600; }
.text-medium { font-weight: 500; }
.text-normal { font-weight: 400; }
.text-light { font-weight: 300; }

.text-uppercase { text-transform: uppercase; }
.text-lowercase { text-transform: lowercase; }
.text-capitalize { text-transform: capitalize; }

/* Spacing Utilities */
.m-0 { margin: 0; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

.px-1 { padding-left: var(--spacing-sm); padding-right: var(--spacing-sm); }
.px-2 { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
.px-3 { padding-left: var(--spacing-lg); padding-right: var(--spacing-lg); }

.py-1 { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-2 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-3 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }

/* ================================================================
 * BUTTONS & FORMS
 * ================================================================ */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-sm);
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  text-decoration: none;
  user-select: none;
  font-family: inherit;
}

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

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  box-shadow: var(--shadow-lg);
}

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

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

.btn-secondary:hover {
  background-color: #e55a2b;
  box-shadow: var(--shadow-lg);
}

.btn-outline-primary {
  background-color: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline-primary:hover {
  background-color: var(--primary-light);
  border-color: var(--primary-dark);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: var(--font-lg);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-xs);
}

.btn-block {
  display: block;
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Form Elements */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--lighter-gray);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-base);
  line-height: var(--line-height-normal);
  color: var(--text-dark);
  transition: var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--text-dark);
}

/* ================================================================
 * COMPONENTS
 * ================================================================ */

/* Header & Navigation */
header {
  background-color: var(--white);
  border-bottom: 1px solid var(--lighter-gray);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-size: var(--font-xl);
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.nav-menu {
  display: none;
  list-style: none;
  width: 100%;
  margin-top: var(--spacing-md);
}

.nav-menu.active {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.nav-item {
  margin-bottom: var(--spacing-sm);
}

.nav-link {
  color: var(--text-dark);
  font-weight: 500;
  transition: var(--transition-fast);
}

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

.nav-toggle {
  background: none;
  border: none;
  font-size: var(--font-lg);
  cursor: pointer;
  color: var(--text-dark);
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
    width: auto;
    flex-direction: row;
    gap: var(--spacing-xl);
    margin-top: 0;
  }
  
  .nav-toggle {
    display: none;
  }
  
  .nav-item {
    margin-bottom: 0;
  }
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.hero h1 {
  font-size: var(--font-2xl);
  margin-bottom: var(--spacing-lg);
  color: var(--white);
}

.hero p {
  font-size: var(--font-lg);
  margin-bottom: var(--spacing-xl);
  color: rgba(255, 255, 255, 0.9);
}

@media (min-width: 768px) {
  .hero {
    padding: var(--spacing-3xl) var(--spacing-2xl);
  }
  
  .hero h1 {
    font-size: var(--font-4xl);
  }
}

/* Section */
section {
  padding: var(--spacing-2xl) 0;
}

@media (min-width: 768px) {
  section {
    padding: var(--spacing-3xl) 0;
  }
}

/* Cards */
.card {
  background-color: var(--white);
  border: 1px solid var(--lighter-gray);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

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

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

.card-text {
  color: var(--gray);
  line-height: var(--line-height-relaxed);
}

/* Grid System */
.row {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .row {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .row {
    grid-template-columns: repeat(3, 1fr);
  }
}

.col {
  width: 100%;
}

/* Footer */
footer {
  background-color: var(--dark-gray);
  color: var(--white);
  padding: var(--spacing-2xl) 0;
  margin-top: var(--spacing-3xl);
}

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

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

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-section h3 {
  color: var(--white);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-lg);
}

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

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-xl);
  text-align: center;
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-sm);
}

/* ================================================================
 * FLOATING ACTION BUTTONS (CTAs)
 * ================================================================ */

.floating-actions {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: var(--z-floating);
  display: flex;
  gap: 10px;
  flex-direction: column;
}

.floating-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  font-size: 28px;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  color: var(--white);
}

.floating-btn-whatsapp {
  background-color: #25D366;
}

.floating-btn-whatsapp:hover {
  background-color: #1fb85c;
  transform: scale(1.1);
}

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

.floating-btn-call:hover {
  background-color: var(--primary-dark);
  transform: scale(1.1);
}

/* Responsive for mobile */
@media (max-width: 480px) {
  .floating-actions {
    bottom: 10px;
    right: 10px;
  }
  
  .floating-btn {
    width: 50px;
    height: 50px;
    font-size: 24px;
  }
}

/* ================================================================
 * LOADING & SKELETON STATES
 * ================================================================ */

.skeleton {
  background: linear-gradient(90deg, var(--lighter-gray) 25%, #f0f0f0 50%, var(--lighter-gray) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ================================================================
 * ANIMATIONS
 * ================================================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

.fade-in {
  animation: fadeIn 0.6s ease-in-out;
}

.slide-in-up {
  animation: slideInUp 0.6s ease-in-out;
}

/* ================================================================
 * RESPONSIVE UTILITIES
 * ================================================================ */

@media (min-width: 768px) {
  .hide-tablet {
    display: none;
  }
}

@media (max-width: 767px) {
  .hide-mobile {
    display: none;
  }
}

@media (min-width: 1024px) {
  .hide-desktop {
    display: none;
  }
}

/* ================================================================
 * PRINT STYLES
 * ================================================================ */

@media print {
  .floating-actions,
  header,
  footer,
  .nav-menu {
    display: none;
  }
  
  body {
    background-color: white;
  }
}

/* ================================================================
 * ACCESSIBILITY
 * ================================================================ */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Darkmode support */
@media (prefers-color-scheme: dark) {
  :root {
    --text-dark: #f0f0f0;
    --light-gray: #1a1a1a;
    --lighter-gray: #2a2a2a;
    --white: #0a0a0a;
  }
  
  body {
    background-color: #0a0a0a;
    color: #f0f0f0;
  }
}