/* ============================================
   BLUSPOT TOURS - MODERN CORPORATE DESIGN
   Heavy Colors, Interactive, Professional
   ============================================ */

/* ROOT VARIABLES - Logo-Inspired Color Scheme */
:root {
  /* Primary Colors - From BluSpot Logo */
  --primary-dark: #0D4FA3;      /* Deep Blue from Logo */
  --primary-main: #1B5BA3;      /* Rich Blue */
  --primary-light: #2E7CB8;     /* Professional Blue */
  
  /* Secondary Colors - Gold from Logo */
  --secondary-dark: #F5A623;    /* Gold/Orange from Logo */
  --secondary-main: #F5A623;    /* Vibrant Gold */
  
  /* Accent Colors */
  --accent-gold: #F5A623;       /* Logo Gold */
  --accent-teal: #06A77D;       /* Professional Teal */
  
  /* Neutral Colors */
  --dark-bg: #F8F9FA;           /* Light Background */
  --dark-card: #FFFFFF;         /* White Card Background */
  --medium-dark: #F0F2F5;       /* Light Gray */
  --light-text: #0D4FA3;        /* Dark Blue Text */
  --border-color: #E0E0E0;      /* Light Border */
  
  /* Semantic Colors */
  --success: #27AE60;
  --warning: #F39C12;
  --danger: #E74C3C;
  --info: #3498DB;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #0D4FA3 0%, #1B5BA3 100%);
  --gradient-overlay: linear-gradient(135deg, rgba(13, 79, 163, 0.9), rgba(27, 91, 163, 0.9));
  --gradient-accent: linear-gradient(135deg, #F5A623 0%, #E59307 100%);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Typography */
  --font-main: 'Inter', 'Segoe UI', sans-serif;
  --font-heading: 'Roboto Condensed', sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(30, 90, 150, 0.3);
}

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

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

html, body {
  font-size: 100%;
  font-family: var(--font-main);
  background: var(--dark-bg);
  color: var(--light-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: var(--transition-normal);
}

a:hover {
  color: var(--accent-gold);
  text-decoration: none;
  opacity: 0.8;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  margin: 0;
  color: var(--light-text);
  letter-spacing: 0.5px;
}

h1 { font-size: 2.5rem; line-height: 1.2; }
h2 { font-size: 2rem; line-height: 1.3; }
h3 { font-size: 1.5rem; line-height: 1.4; }
h4 { font-size: 1.25rem; line-height: 1.4; }
h5 { font-size: 1.1rem; line-height: 1.5; }
h6 { font-size: 1rem; line-height: 1.5; }

p {
  margin: 0 0 var(--spacing-md) 0;
  color: #B8C5D6;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.top-header {
  background: var(--primary-dark);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-bottom: 2px solid var(--accent-gold);
  box-shadow: var(--shadow-md);
}

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

.top-header a {
  color: var(--light-text);
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
  transition: var(--transition-fast);
}

.top-header a:hover {
  color: var(--accent-gold);
}

.header {
  background: var(--dark-card);
  backdrop-filter: blur(10px);
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo a {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: var(--font-weight-bold);
  color: var(--light-text);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: var(--transition-fast);
}

.logo a span {
  color: var(--accent-gold);
}

.logo a:hover {
  color: var(--accent-gold);
}

/* Navigation Menu */
.navbar-menu {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}

.navbar-menu a {
  color: var(--light-text);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  position: relative;
}

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

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

.navbar-menu a:hover {
  background: rgba(30, 90, 150, 0.1);
  color: var(--accent-gold);
}

/* ============================================
   HERO SECTION
   ============================================ */

#heroCarousel {
  height: 100vh;
  position: relative;
  overflow: hidden;
}

#heroCarousel .carousel-inner,
#heroCarousel .carousel-item {
  height: 100%;
}

#heroCarousel .carousel-item img {
  height: 100%;
  width: 100%;
  object-fit: cover;
  opacity: 0.5;
  transition: opacity var(--transition-slow);
}

#heroCarousel .carousel-item:hover img {
  opacity: 0.6;
}

#heroCarousel .carousel-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-overlay);
  z-index: 1;
}

.carousel-caption {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  max-width: 900px;
  position: relative;
  z-index: 2;
  animation: fadeInUp 0.8s ease-out;
}

.carousel-caption h1 {
  font-size: clamp(2rem, 6vw, 4.5rem);
  color: var(--light-text);
  letter-spacing: 2px;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
  line-height: 1.1;
}

.carousel-caption .accent-text {
  color: var(--accent-gold);
}

.carousel-caption p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--light-text);
  margin: var(--spacing-lg) 0;
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}

.carousel-caption .btn {
  margin-top: var(--spacing-xl);
}

/* Carousel Controls */
.carousel-control-prev,
.carousel-control-next {
  width: auto;
  opacity: 0.7;
  transition: var(--transition-fast);
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
  opacity: 1;
}

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

.btn {
  font-family: var(--font-main);
  font-weight: var(--font-weight-semibold);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--light-text);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1E5A96, #2E7CB8);
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
  color: var(--light-text);
}

.btn-secondary {
  background: var(--gradient-accent);
  color: var(--light-text);
  box-shadow: var(--shadow-lg);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, #C1121F, #A00C1F);
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
  color: var(--light-text);
}

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

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

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--dark-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
  border-color: var(--accent-gold);
}

.card-img-top {
  height: 280px;
  object-fit: cover;
  overflow: hidden;
  position: relative;
}

.card-img-top[loading="lazy"] {
  background: linear-gradient(90deg, var(--medium-dark) 25%, transparent 25%, transparent 50%, var(--medium-dark) 50%, var(--medium-dark) 75%, transparent 75%, transparent);
  background-size: 200% 200%;
  animation: shimmer 2s infinite;
}

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

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

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--accent-gold);
}

.card-text {
  font-size: 0.95rem;
  color: #B8C5D6;
  line-height: 1.6;
}

/* ============================================
   LAZY LOADING IMAGES
   ============================================ */

img[loading="lazy"] {
  opacity: 0;
  transition: opacity var(--transition-normal);
}

img[loading="lazy"].loaded {
  opacity: 1;
}

/* Blur-up effect while loading */
img.blur-up {
  filter: blur(10px);
}

img.blur-up.loaded {
  filter: blur(0);
}

/* ============================================
   SECTIONS
   ============================================ */

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

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title h2 {
  position: relative;
  display: inline-block;
  padding-bottom: var(--spacing-lg);
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 3px;
  background: var(--accent-gold);
  border-radius: var(--radius-md);
}

.section-subtitle {
  color: #B8C5D6;
  font-size: 1.1rem;
  margin-top: var(--spacing-md);
}

/* ============================================
   GRID LAYOUTS
   ============================================ */

.grid {
  display: grid;
  gap: var(--spacing-xl);
  grid-auto-flow: dense;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

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

@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   FORMS
   ============================================ */

.form-group {
  margin-bottom: var(--spacing-lg);
}

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

input,
textarea,
select {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--medium-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--light-text);
  font-family: var(--font-main);
  transition: var(--transition-normal);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
  background: rgba(44, 62, 80, 0.8);
}

input::placeholder,
textarea::placeholder {
  color: #6C7A8A;
}

/* ============================================
   ALERTS & BADGES
   ============================================ */

.alert {
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  border-left: 4px solid;
}

.alert-success {
  background: rgba(39, 174, 96, 0.1);
  border-color: var(--success);
  color: #A8E6C1;
}

.alert-danger {
  background: rgba(230, 57, 70, 0.1);
  border-color: var(--danger);
  color: #F8A5AD;
}

.alert-warning {
  background: rgba(243, 156, 18, 0.1);
  border-color: var(--warning);
  color: #F7DC6F;
}

.alert-info {
  background: rgba(52, 152, 219, 0.1);
  border-color: var(--info);
  color: #A9D0FF;
}

.badge {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  font-size: 0.75rem;
}

.badge-primary {
  background: rgba(30, 90, 150, 0.2);
  color: #7EB3E8;
}

.badge-success {
  background: rgba(39, 174, 96, 0.2);
  color: #A8E6C1;
}

/* ============================================
   INTERACTIVE ELEMENTS
   ============================================ */

/* Hover Effects */
.hover-lift {
  transition: var(--transition-normal);
  cursor: pointer;
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.hover-scale {
  transition: var(--transition-normal);
}

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

.hover-glow {
  transition: var(--transition-normal);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow);
}

/* Progress Bars */
.progress {
  background: var(--medium-dark);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 8px;
  margin: var(--spacing-md) 0;
}

.progress-bar {
  background: var(--gradient-primary);
  height: 100%;
  transition: width var(--transition-slow);
}

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

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

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

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

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

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

.slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

/* Stagger Animation */
.fade-in-up.stagger-1 { animation-delay: 0.1s; }
.fade-in-up.stagger-2 { animation-delay: 0.2s; }
.fade-in-up.stagger-3 { animation-delay: 0.3s; }
.fade-in-up.stagger-4 { animation-delay: 0.4s; }

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

footer {
  background: var(--dark-card);
  border-top: 2px solid var(--accent-gold);
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

footer h5 {
  color: var(--accent-gold);
  margin-bottom: var(--spacing-lg);
}

footer p {
  color: #B8C5D6;
}

footer a {
  color: #7EB3E8;
}

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

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

@media (max-width: 1024px) {
  .navbar-menu {
    gap: var(--spacing-lg);
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.25rem; }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;
  }
  
  .section {
    padding: var(--spacing-xl) var(--spacing-md);
  }
  
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  
  .navbar-menu {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }
  
  .navbar-menu a {
    width: 100%;
    text-align: left;
  }
  
  .carousel-caption h1 {
    font-size: 1.75rem;
  }
  
  .carousel-caption p {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }
  
  .section {
    padding: var(--spacing-lg) var(--spacing-md);
  }
  
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  h3 { font-size: 1.1rem; }
  
  .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.9rem;
  }
  
  .carousel-caption {
    width: 95%;
  }
  
  .carousel-caption h1 {
    font-size: 1.5rem;
  }
  
  .carousel-caption p {
    font-size: 0.9rem;
  }
}

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

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

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

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

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

.gap-1 { gap: var(--spacing-md); }
.gap-2 { gap: var(--spacing-lg); }
.gap-3 { gap: var(--spacing-xl); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-dark);
  border-radius: var(--radius-md);
}