/* Adriatic Tech Systems - Main Stylesheet */

/* ===== CSS VARIABLES ===== */
:root {
  /* Color Palette */
  --color-deep-sea: #071A2B;
  --color-adriatic-blue: #0EA5E9;
  --color-teal-signal: #14B8A6;
  --color-limestone-gray: #E5E7EB;
  --color-coral-accent: #FB7185;
  --color-white: #FFFFFF;
  --color-text-light: #F9FAFB;
  --color-text-dark: #1F2937;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Fira Code', 'Courier New', monospace;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Layout */
  --max-width: 1280px;
  --header-height: 80px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.4s ease;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-deep-sea);
  color: var(--color-text-light);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.5rem;
  font-weight: 700;
}

h3 {
  font-size: 1.875rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1.125rem;
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-limestone-gray);
}

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

a:hover {
  color: var(--color-teal-signal);
}

code {
  font-family: var(--font-mono);
  background-color: rgba(14, 165, 233, 0.1);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: rgba(7, 26, 43, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(14, 165, 233, 0.2);
  z-index: 1000;
  transition: background-color var(--transition-medium);
}

.header.scrolled {
  background-color: rgba(7, 26, 43, 0.98);
  box-shadow: var(--shadow-md);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.05);
  color: var(--color-adriatic-blue);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-adriatic-blue), var(--color-teal-signal));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

/* ===== NAVIGATION ===== */
.nav {
  display: flex;
  gap: var(--spacing-md);
}

.nav-link {
  color: var(--color-limestone-gray);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--color-adriatic-blue);
  background-color: rgba(14, 165, 233, 0.1);
}

.nav-link.active {
  color: var(--color-adriatic-blue);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-adriatic-blue), transparent);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: all var(--transition-fast);
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) var(--spacing-md);
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-deep-sea) 0%, #0A2540 100%);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.3;
  z-index: 0;
}

.hero-content {
  max-width: var(--max-width);
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-white), var(--color-adriatic-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--color-limestone-gray);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-description {
  font-size: 1.125rem;
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
  color: var(--color-limestone-gray);
  animation: fadeInUp 0.8s ease 0.4s both;
}

/* ===== SECTION ===== */
.section {
  padding: var(--spacing-xl) var(--spacing-md);
  position: relative;
}

.section-dark {
  background-color: var(--color-deep-sea);
}

.section-light {
  background-color: #0A2540;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--color-limestone-gray);
  max-width: 600px;
  margin: 0 auto;
}

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

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

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

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

/* ===== CARDS ===== */
.card {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: all var(--transition-medium);
  backdrop-filter: blur(10px);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(14, 165, 233, 0.2);
  border-color: var(--color-adriatic-blue);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-adriatic-blue), var(--color-teal-signal));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  font-size: 1.5rem;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-white);
}

.card-description {
  color: var(--color-limestone-gray);
  line-height: 1.6;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  font-size: 1rem;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-adriatic-blue), var(--color-teal-signal));
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
}

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

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

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

/* ===== FOOTER ===== */
.footer {
  background-color: #050F1C;
  border-top: 1px solid rgba(14, 165, 233, 0.2);
  padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

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

.footer-section h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.footer-section p,
.footer-section a {
  color: var(--color-limestone-gray);
  display: block;
  margin-bottom: var(--spacing-xs);
}

.footer-section a:hover {
  color: var(--color-adriatic-blue);
}

.footer-bottom {
  border-top: 1px solid rgba(14, 165, 233, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: var(--color-limestone-gray);
}

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

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

/* ===== UTILITIES ===== */
.text-center {
  text-align: center;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-adriatic-blue), var(--color-teal-signal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
  }
  
  .nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: rgba(7, 26, 43, 0.98);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
  }
  
  .nav.active {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .section {
    padding: var(--spacing-lg) var(--spacing-sm);
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
}

/* ===== COOKIE CONSENT BANNER ===== */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(7, 26, 43, 0.98);
  backdrop-filter: blur(10px);
  border-top: 2px solid var(--color-adriatic-blue);
  padding: 1.5rem;
  z-index: 10000;
  transform: translateY(100%);
  transition: transform 0.4s ease;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}

.cookie-banner.show {
  transform: translateY(0);
}

.cookie-banner-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.cookie-banner-text {
  flex: 1;
  min-width: 300px;
}

.cookie-banner-text h4 {
  color: var(--color-adriatic-blue);
  margin-bottom: 0.5rem;
  font-size: 1.125rem;
}

.cookie-banner-text p {
  color: var(--color-limestone-gray);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 0;
}

.cookie-banner-text a {
  color: var(--color-adriatic-blue);
  text-decoration: underline;
}

.cookie-banner-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.cookie-btn {
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  font-size: 0.95rem;
  white-space: nowrap;
}

.cookie-btn-accept {
  background: linear-gradient(135deg, var(--color-adriatic-blue), var(--color-teal-signal));
  color: white;
}

.cookie-btn-accept:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(14, 165, 233, 0.4);
}

.cookie-btn-decline {
  background: transparent;
  color: var(--color-limestone-gray);
  border: 1px solid rgba(229, 231, 235, 0.3);
}

.cookie-btn-decline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-limestone-gray);
}

.cookie-btn-settings {
  background: transparent;
  color: var(--color-adriatic-blue);
  border: 1px solid var(--color-adriatic-blue);
}

.cookie-btn-settings:hover {
  background: rgba(14, 165, 233, 0.1);
}

@media (max-width: 768px) {
  .cookie-banner-content {
    flex-direction: column;
    align-items: stretch;
  }
  
  .cookie-banner-actions {
    flex-direction: column;
  }
  
  .cookie-btn {
    width: 100%;
  }
}