/*
Theme Name: Skylink Skyward Airs - Document & Livery Center
Theme URI: https://skylinkair.com
Description: Professional document and livery catalog management for Skylink Skyward Airs
Version: 1.0.0
Author: Skylink Development
Author URI: https://skylinkair.com
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: skylink-airs
Domain Path: /languages
*/

:root {
  /* Primary Aviation Colors */
  --primary-navy: #0a2342;
  --primary-sky: #1e5ba8;
  --primary-gold: #d4a574;
  --accent-white: #ffffff;
  --accent-light-gray: #f5f7fa;
  --accent-dark-gray: #3a3f47;
  
  /* Typography */
  --font-display: 'Playfair Display', serif;
  --font-heading: 'Syne', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--accent-dark-gray);
  background-color: var(--accent-white);
  overflow-x: hidden;
}

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

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

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

button,
input[type="button"],
input[type="submit"] {
  cursor: pointer;
  transition: all var(--transition-fast);
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--primary-navy);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  font-weight: 700;
}

h1 {
  font-size: 3.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.5rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

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

/* ========================================
   NAVIGATION
   ======================================== */

.navbar {
  background-color: var(--primary-navy);
  padding: var(--spacing-md) var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.navbar-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--primary-gold);
  font-weight: bold;
}

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

.navbar-menu a {
  color: var(--accent-white);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  position: relative;
  padding-bottom: 0.25rem;
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-gold);
  transition: width var(--transition-fast);
}

.navbar-menu a:hover::after {
  width: 100%;
}

/* ========================================
   HEADER / HERO
   ======================================== */

.hero {
  background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-sky) 100%);
  color: var(--accent-white);
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: -10%;
  width: 50%;
  height: 100%;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><path d="M100 20 L120 80 L180 100 L120 120 L100 180 L80 120 L20 100 L80 80 Z" fill="rgba(255,255,255,0.05)"/></svg>');
  background-size: 300px;
  opacity: 0.3;
  animation: float 8s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
}

.hero h1 {
  color: var(--accent-white);
  margin-bottom: var(--spacing-lg);
  animation: slideInDown 0.8s ease-out;
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
  animation: slideInUp 0.8s ease-out 0.2s both;
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: #c99a5f;
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(212, 165, 116, 0.3);
}

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

.btn-secondary:hover {
  background-color: var(--accent-light-gray);
}

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

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

/* ========================================
   CONTAINER & LAYOUT
   ======================================== */

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

.section {
  padding: var(--spacing-2xl) var(--spacing-lg);
}

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

/* ========================================
   DOCUMENT CATALOG
   ======================================== */

.documents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.document-card {
  background: var(--accent-white);
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.document-card:hover {
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
  transform: translateY(-8px);
  border-color: var(--primary-sky);
}

.document-card-header {
  background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-sky) 100%);
  padding: var(--spacing-lg);
  color: var(--accent-white);
  min-height: 120px;
  display: flex;
  align-items: flex-end;
}

.document-card-header h3 {
  color: var(--accent-white);
  margin-bottom: 0;
  font-size: 1.3rem;
}

.document-card-body {
  padding: var(--spacing-lg);
  flex-grow: 1;
}

.document-card-meta {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.85rem;
  color: #666;
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.document-tag {
  display: inline-block;
  background-color: var(--accent-light-gray);
  color: var(--primary-sky);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.document-description {
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
  color: #555;
}

.document-card-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid #e0e0e0;
  display: flex;
  gap: var(--spacing-sm);
  justify-content: space-between;
  align-items: center;
}

.document-size {
  font-size: 0.8rem;
  color: #999;
}

/* ========================================
   LIVERY CATALOG
   ======================================== */

.livery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.livery-card {
  background: var(--accent-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.livery-card:hover {
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.15);
  transform: translateY(-12px);
}

.livery-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--accent-light-gray), #e8ecf1);
  overflow: hidden;
  position: relative;
}

.livery-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.livery-card:hover .livery-image img {
  transform: scale(1.05);
}

.livery-info {
  padding: var(--spacing-lg);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.livery-name {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--primary-navy);
  margin-bottom: 0.5rem;
}

.livery-aircraft {
  font-size: 0.85rem;
  color: var(--primary-sky);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.livery-specs {
  font-size: 0.85rem;
  color: #666;
  margin-bottom: var(--spacing-md);
}

.livery-specs p {
  margin-bottom: 0.35rem;
  display: flex;
  justify-content: space-between;
}

.livery-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: auto;
}

.livery-actions .btn {
  flex: 1;
  padding: var(--spacing-sm);
  font-size: 0.8rem;
  text-align: center;
}

/* ========================================
   SEARCH & FILTER
   ======================================== */

.search-bar {
  background-color: var(--accent-light-gray);
  padding: var(--spacing-lg);
  border-radius: 8px;
  margin-bottom: var(--spacing-2xl);
}

.search-input-wrapper {
  display: flex;
  gap: var(--spacing-sm);
}

.search-input-wrapper input {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
  font-family: var(--font-body);
}

.search-input-wrapper input:focus {
  outline: none;
  border-color: var(--primary-sky);
  box-shadow: 0 0 0 3px rgba(30, 91, 168, 0.1);
}

.filter-tags {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  flex-wrap: wrap;
}

.filter-tag {
  padding: 0.4rem 0.8rem;
  background-color: var(--accent-white);
  border: 1px solid #ddd;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.85rem;
  font-weight: 500;
}

.filter-tag:hover,
.filter-tag.active {
  background-color: var(--primary-sky);
  color: var(--accent-white);
  border-color: var(--primary-sky);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background-color: var(--primary-navy);
  color: var(--accent-white);
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  color: var(--primary-gold);
  margin-bottom: var(--spacing-md);
}

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

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

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--spacing-lg);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
  :root {
    font-size: 14px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .navbar-menu {
    gap: var(--spacing-sm);
  }

  .documents-grid,
  .livery-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .hero {
    min-height: 300px;
    padding: var(--spacing-xl) var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .navbar-brand {
    font-size: 1rem;
  }

  .navbar-menu {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}