/* ===== CSS VARIABLES - THEME COLORS ===== */
:root {
  /* Primary Colors - Navy */
  --primary-color: #dc2626;
  --primary-dark: #1f2937;
  --primary-light: #ef4444;

  /* Secondary Colors - Silver */
  --secondary-color: #0891b2;
  --secondary-dark: #0e7490;
  --secondary-light: #06b6d4;

  /* Neutral Colors */
  --bg-color: #ffffff;
  --bg-gray: #f8fafc;
  --bg-dark: #0f172a;
  --text-color: #1e293b;
  --text-light: #64748b;
  --border-color: #e2e8f0;

  /* UI Colors */
  --success-color: #22c55e;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --info-color: #3b82f6;

  /* 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);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Typography */
  --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* ===== 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-base);
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-base);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  transition: all var(--transition-base);
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

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

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

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

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

/* ===== HEADER ===== */
.header {
  background-color: var(--bg-color);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-top {
  background-color: var(--primary-color);
  color: white;
  padding: var(--spacing-xs) 0;
}

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

.phone-number {
  font-size: var(--font-size-lg);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.phone-icon {
  width: 20px;
  height: 20px;
}

.header-main {
  padding: var(--spacing-md) 0;
}

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

.logo {
  display: flex;
  align-items: center;
  height: 80px;
}

.logo-image {
  height: 80px;
  width: 80px;
  border-radius: 50%;
  object-fit: cover;
}

.nav {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  color: var(--text-color);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

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

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  font-size: 1.5rem;
  color: var(--text-color);
}

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

.hero h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
  font-weight: 700;
}

.hero p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
}

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

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

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

.btn-secondary:hover {
  background-color: var(--secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

.btn-large {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
}

/* ===== SECTION STYLES ===== */
.section {
  padding: var(--spacing-xl) 2rem;
}

.section-title {
  font-size: var(--font-size-3xl);
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
  text-align: center;
  font-weight: 700;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-light);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

/* ===== EQUIPMENT GRID ===== */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.equipment-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.equipment-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  background-color: var(--bg-gray);
}

.equipment-content {
  padding: var(--spacing-md);
}

.equipment-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: var(--secondary-color);
  color: white;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.equipment-title {
  font-size: var(--font-size-xl);
  color: var(--text-color);
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
}

.equipment-meta {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.equipment-price {
  font-size: var(--font-size-2xl);
  color: var(--primary-color);
  font-weight: 700;
  margin: var(--spacing-sm) 0;
}

.equipment-description {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== FILTERS ===== */
.filters {
  background: white;
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-lg);
}

.filters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.filter-group {
  display: flex;
  flex-direction: column;
}

.filter-label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.filter-input {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-base);
}

.filter-input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

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

/* ===== FOOTER ===== */
.footer {
  background-color: var(--primary-dark);
  color: white;
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-xl);
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0.5rem;
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .section {
    padding: var(--spacing-xl) 1rem;
  }

  .logo {
    height: 50px;
  }

  .logo-image {
    max-width: 180px;
  }

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

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
  }

  .nav.active {
    display: flex;
  }

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

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

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

/* ===== LOADING & ALERTS ===== */
.loading {
  text-align: center;
  padding: var(--spacing-lg);
  color: var(--text-light);
}

.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.alert-success {
  background-color: #d1fae5;
  color: #065f46;
  border: 1px solid #6ee7b7;
}

.alert-error {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

.alert-info {
  background-color: #dbeafe;
  color: #1e40af;
  border: 1px solid #93c5fd;
}

/* ===== ENHANCED DESIGN STYLES ===== */

/* Feature Icons */
.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
  border-radius: 50%;
  color: white;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover .feature-icon {
  transform: translateY(-5px) scale(1.05);
  box-shadow: var(--shadow-xl);
}

/* Enhanced Equipment Cards */
.equipment-card {
  position: relative;
  overflow: hidden;
}

.equipment-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.equipment-card:hover::before {
  transform: scaleX(1);
}

/* Enhanced Hero Section */
.hero {
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.hero .container {
  position: relative;
  z-index: 1;
}

/* Enhanced Buttons */
.btn {
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

/* Enhanced Section Titles */
.section-title {
  position: relative;
  display: block;
  padding-bottom: var(--spacing-sm);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

/* Enhanced Header */
.header-main {
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.95);
}

/* Enhanced Footer */
.footer {
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-light), transparent);
}

/* Service/Contact Icons */
.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.1), rgba(59, 130, 246, 0.1));
  border-radius: var(--radius-lg);
  color: var(--primary-color);
  transition: all var(--transition-base);
}

.service-card:hover .service-icon {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  transform: translateY(-5px);
}

/* Enhanced Cards with better depth */
.admin-card,
.equipment-card,
.filters {
  border: 1px solid var(--border-color);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.admin-card:hover,
.equipment-card:hover {
  border-color: var(--primary-light);
}

/* Improved typography hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.025em;
}

/* Better focus states */
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

/* Enhanced price display */
.equipment-price {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Loading state enhancement */
.loading {
  position: relative;
}

.loading::after {
  content: '';
  position: absolute;
  right: -20px;
  top: 50%;
  width: 16px;
  height: 16px;
  border: 2px solid var(--primary-color);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Smooth page transitions */
body {
  animation: fadeIn 0.3s ease-in;
}

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