/* ===== CSS VARIABLES & CENTRALIZED VALUES ===== */
:root {
  /* Brand Colors */
  --primary-blue: #005bbb;
  --primary-blue-dark: #004499;
  --primary-blue-light: #0066cc;
  --accent-blue: #66ccff;

  /* Neutral Colors */
  --white: #ffffff;
  --black: #333333;
  --gray-light: #f8f9fa;
  --gray-medium: #e0e0e0;
  --gray-dark: #666666;
  --gray-text: #cccccc;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  /* Typography */
  --font-primary: "Roboto", sans-serif;
  --font-heading: "Montserrat", sans-serif;
  --font-size-sm: 0.9rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.2rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3rem;

  /* Layout */
  --container-max-width: 1200px;
  --border-radius: 10px;
  --border-radius-sm: 5px;
  --border-radius-lg: 15px;

  /* Z-Index Hierarchy */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 900;
  --z-navbar: 1000;
  --z-mobile-menu: 1001;
  --z-hamburger: 1002;
  --z-modal: 2000;
  --z-tooltip: 3000;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 25px rgba(0, 91, 187, 0.15);
  --shadow-xl: 0 15px 35px rgba(0, 91, 187, 0.2);
}

/* ===== RESET & BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  color: var(--black);
  line-height: 1.6;
  background-color: var(--white);
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.text-center {
  text-align: center;
}
.text-primary {
  color: var(--primary-blue);
}
.bg-light {
  background-color: var(--gray-light);
}

/* Skip to main content */
.skip-to-main {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-blue);
  color: var(--white);
  padding: 8px;
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

.skip-to-main:focus {
  top: 6px;
}

/* ===== CARD SYSTEM (CENTRALIZED) ===== */
.card {
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  border: 2px solid transparent;
  transition: all var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-blue);
}

.card--clickable {
  cursor: pointer;
  position: relative;
}

.card--clickable::after {
  content: "→";
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  font-size: 1.8rem;
  color: var(--primary-blue);
  opacity: 0;
  transition: all var(--transition-normal);
  transform: translateX(-15px);
  font-weight: bold;
}

.card--clickable:hover::after {
  opacity: 1;
  transform: translateX(0);
}

.card--lift-sm:hover {
  transform: translateY(-5px);
}
.card--lift-md:hover {
  transform: translateY(-8px);
}
.card--lift-lg:hover {
  transform: translateY(-10px);
}

/* ===== TYPOGRAPHY ===== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--black);
}

h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
}
h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
}
h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

/* ===== BUTTON SYSTEM ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  font-size: var(--font-size-base);
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  min-height: 44px;
  min-width: 44px;
  text-align: center;
}

.btn--primary {
  background: linear-gradient(
    135deg,
    var(--primary-blue) 0%,
    var(--primary-blue-light) 100%
  );
  color: var(--white);
  box-shadow: 0 4px 15px rgba(0, 91, 187, 0.3);
  margin: var(--spacing-sm) 0;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 91, 187, 0.4);
  background: linear-gradient(
    135deg,
    var(--primary-blue-dark) 0%,
    var(--primary-blue) 100%
  );
}

.btn--secondary {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

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

/* ===== HEADER & NAVIGATION ===== */
.navbar {
  background: var(--white);
  box-shadow: var(--shadow-sm);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: var(--z-navbar);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-normal);
}

.logo-svg {
  width: 20%;
  flex-shrink: 0;
  transition: all var(--transition-normal);
}

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

.logo-text h1 {
  color: var(--primary-blue);
  font-size: var(--font-size-xl);
  margin: 0;
  line-height: 1.2;
  transition: color var(--transition-normal);
}

.logo:hover .logo-text h1 {
  color: var(--primary-blue-dark);
}

.logo-text .slogan {
  color: var(--gray-dark);
  font-size: var(--font-size-sm);
  font-style: italic;
  line-height: 1;
  margin: 0;
  display: block;
}

/* Mobile logo adjustments */
@media (max-width: 768px) {
  .logo-svg {
    width: 32px;
    height: 32px;
  }

  .logo-text h1 {
    font-size: var(--font-size-lg);
  }

  .logo-text .slogan {
    font-size: 0.8rem;
  }
}

/* Extra small screens - hide slogan, make logo more compact */
@media (max-width: 480px) {
  .logo {
    gap: var(--spacing-xs);
  }

  .logo-text .slogan {
    display: none;
  }

  .logo-svg {
    width: 28px;
    height: 28px;
  }

  .logo-text h1 {
    font-size: var(--font-size-base);
  }
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-menu a {
  text-decoration: none;
  color: var(--black);
  font-weight: 500;
  transition: color var(--transition-normal);
}

.nav-menu a:hover {
  color: var(--primary-blue);
}

/* ===== HAMBURGER MENU ===== */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  z-index: var(--z-hamburger);
  position: relative;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--primary-blue);
  margin: 3px 0;
  transition: all var(--transition-normal);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ===== HERO SECTION ===== */
.hero {
  background: linear-gradient(
    135deg,
    var(--primary-blue) 0%,
    var(--primary-blue-light) 100%
  );
  color: var(--white);
  padding: 150px 0 100px;
  text-align: center;
}

.hero-content h1 {
  color: var(--white);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
}

.hero-description {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  color: var(--white);
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== SECTIONS WITH UNIFIED STYLING ===== */
.section {
  padding: var(--spacing-xxl) 0;
}

.section--light {
  background: var(--gray-light);
}

.section--gradient {
  background: linear-gradient(135deg, var(--gray-light) 0%, #e9ecef 100%);
  position: relative;
}

.section--gradient::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 20% 80%,
      rgba(0, 91, 187, 0.03) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(0, 91, 187, 0.03) 0%,
      transparent 50%
    );
  pointer-events: none;
}

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

/* ===== GRID SYSTEMS ===== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}
.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* ===== SERVICE CARDS ===== */
.service-card {
  text-decoration: none;
  color: inherit;
  display: block;
  padding: var(--spacing-lg);
  text-align: center;
  position: relative;
}

.service-card:hover h3 {
  color: var(--primary-blue);
  transform: scale(1.05);
}

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

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--black);
  font-size: var(--font-size-base);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 15px;
  border: 2px solid var(--gray-medium);
  border-radius: 8px;
  font-size: var(--font-size-base);
  font-family: var(--font-primary);
  transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 91, 187, 0.1);
}

/* Form Messages */
.form-message {
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  animation: slideDown 0.3s ease-out;
}

.form-message--success {
  background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
  color: #155724;
  border: 1px solid #c3e6cb;
  box-shadow: 0 4px 12px rgba(21, 87, 36, 0.15);
}

.form-message--success::before {
  content: "✓";
  font-size: 1.2rem;
  font-weight: bold;
  color: #28a745;
  background: #28a745;
  color: white;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.form-message--error {
  background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
  color: #721c24;
  border: 1px solid #f5c6cb;
  box-shadow: 0 4px 12px rgba(114, 28, 36, 0.15);
}

.form-message--error::before {
  content: "⚠";
  font-size: 1.2rem;
  font-weight: bold;
  color: #dc3545;
  background: #dc3545;
  color: white;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Button Loading State */
.btn--loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn--loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  color: white;
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* Loading Spinner Animation */
@keyframes spin {
  0% {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes slideDown {
  0% {
    opacity: 0;
    transform: translateY(-10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== MOBILE NAVIGATION (FIXED) ===== */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--white);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: 120px;
    transition: right var(--transition-slow);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.15);
    z-index: var(--z-mobile-menu);
    overflow-y: auto;
  }

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

  .nav-menu.active::after {
    content: "";
    position: fixed;
    top: 80px;
    left: 0;
    width: calc(100vw - 280px);
    height: calc(100vh - 80px);
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-overlay);
    animation: fadeIn 0.3s ease;
  }

  .nav-menu li {
    margin: var(--spacing-lg) 0;
    width: 100%;
    text-align: center;
  }

  .nav-menu a {
    font-size: var(--font-size-lg);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    display: block;
    border-radius: 8px;
    transition: all var(--transition-normal);
  }

  .nav-menu a:hover {
    background-color: var(--gray-light);
    color: var(--primary-blue);
  }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: var(--font-size-2xl);
  }
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 60px 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  .hero {
    padding: 120px 0 80px;
  }
  .hero-content h1 {
    font-size: 1.8rem;
  }
  .hero-description {
    font-size: var(--font-size-base);
  }
}

/* ===== ACCESSIBILITY & PERFORMANCE ===== */
a:focus,
button:focus,
input:focus,
textarea:focus,
.card:focus {
  outline: 3px solid var(--primary-blue);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (prefers-contrast: high) {
  .card {
    border: 2px solid var(--black);
  }
  .btn--primary {
    border: 2px solid var(--black);
  }
}

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

/* ===== FOOTER STYLING ===== */
footer {
  background: var(--black);
  color: var(--white);
  padding: 50px 0 20px;
}

.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,
.footer-section h4 {
  color: var(--primary-blue);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-section a {
  color: var(--gray-text);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.footer-section a:hover,
.footer-section a:focus {
  color: var(--accent-blue);
  text-decoration: underline;
}

.footer-section p {
  color: var(--gray-text);
  margin-bottom: var(--spacing-xs);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--gray-dark);
  color: var(--gray-text);
  font-size: var(--font-size-sm);
}

/* Service Detail Pages Styling */
.service-detail-hero {
  background: linear-gradient(
    135deg,
    var(--primary-blue) 0%,
    var(--primary-blue-light) 100%
  );
  color: var(--white);
  padding: 150px 0 80px;
  text-align: center;
}

.service-detail-hero h1 {
  color: var(--white);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
}

.service-subtitle {
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
  color: var(--white);
}

.service-detail-content {
  padding: 80px 0;
  background: var(--white);
}

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

.service-main-content h2 {
  color: var(--primary-blue);
  margin-bottom: var(--spacing-md);
  text-align: left;
}

.service-main-content h3 {
  color: var(--black);
  margin: var(--spacing-lg) 0 var(--spacing-sm) 0;
}

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

.service-list li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  border-bottom: 1px solid var(--gray-light);
}

.service-list li:last-child {
  border-bottom: none;
}

.service-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary-blue);
  font-weight: bold;
  font-size: 1.2rem;
}

.service-list strong {
  color: var(--primary-blue);
}

.service-sidebar {
  display: flex;
  flex-direction: column;
}

/* Responsive adjustments for service pages */
@media (max-width: 768px) {
  .service-content-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .service-detail-hero {
    padding: 120px 0 60px;
  }

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

  .service-detail-content {
    padding: 60px 0;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.95);
  color: white;
  padding: var(--spacing-md);
  z-index: 10000;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
}

.cookie-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.cookie-text p {
  margin: 0;
  font-size: var(--font-size-sm);
  line-height: 1.4;
}

.cookie-link {
  color: var(--primary-blue);
  text-decoration: underline;
}

.cookie-link:hover {
  color: #0088ff;
}

.cookie-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

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

/* Mobile responsiveness */
@media (max-width: 768px) {
  .cookie-content {
    flex-direction: column;
    text-align: center;
  }

  .cookie-buttons {
    width: 100%;
    justify-content: center;
  }
}