/* Nébula Café - Premium Modern CSS with Theme System */

/* Root Theme Variables - Light Mode Default */
:root {
  --color-primary: #C9A873;
  --color-primaryHover: #C874FF;
  --color-accent: #6F4E37;
  --color-dark: #100F19;
  --color-light: #F5F3EF;
  --color-text: #2C2A3B;
  --color-textLight: #EAE8FF;
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-danger: #EF4444;
  --transition-duration: 0.3s;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px 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);
}

[data-theme="dark"] {
  --color-primary: #E8B76F;
  --color-primaryHover: #D885FF;
  --color-accent: #D4A574;
  --color-dark: #0D0C15;
  --color-light: #1A1923;
  --color-text: #E5E3FF;
  --color-textLight: #C5C3D8;
  --color-success: #34D399;
  --color-warning: #FBBF24;
  --color-danger: #F87171;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
}

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

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

/* Font Families */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Lora:wght@400;500;600;700&display=swap');

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--color-text);
  background-color: var(--color-light);
  transition: background-color var(--transition-duration) ease, color var(--transition-duration) ease;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Chinese Font Support */
:lang(zh) {
  font-family: 'Noto Sans SC', 'Microsoft YaHei', 'SimHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
}

h1, h2, h3, h4, h5, h6, .navbar-brand {
  font-family: 'Lora', 'Georgia', serif;
  font-weight: 700;
  letter-spacing: -0.5px;
}

p {
  color: var(--color-text);
  transition: color var(--transition-duration) ease;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-duration) ease;
}

a:hover {
  color: var(--color-primaryHover);
}

/* Navbar Styling */
.navbar {
  background-color: var(--color-dark);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all var(--transition-duration) ease;
  padding: 1rem 0;
}

.navbar-brand {
  font-size: 1.8rem;
  color: var(--color-primary) !important;
  font-weight: 700;
  letter-spacing: 1px;
  transition: all var(--transition-duration) ease;
}

.navbar-brand:hover {
  color: var(--color-primaryHover) !important;
  transform: scale(1.05);
}

.navbar-nav .nav-link {
  color: var(--color-textLight) !important;
  margin: 0 0.5rem;
  padding: 0.5rem 1rem !important;
  border-radius: 4px;
  transition: all var(--transition-duration) ease;
  position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
  color: var(--color-primary) !important;
  background-color: rgba(201, 168, 115, 0.1);
  transform: translateY(-2px);
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: all var(--transition-duration) ease;
  transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link:focus::after {
  width: 80%;
}

/* Header Controls */
.header-controls {
  display: flex;
  gap: 1rem;
  align-items: center;
}

#theme-switcher,
#language-switcher {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  padding: 0.4rem 0.8rem;
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-duration) ease;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

#theme-switcher:hover,
#language-switcher:hover {
  background-color: var(--color-primary);
  color: var(--color-dark);
  transform: rotate(180deg) scale(1.1);
}

/* Hero Section */
.hero-video-container {
  position: relative;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-video-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(16, 15, 25, 0.7) 0%, rgba(201, 168, 115, 0.2) 100%);
  z-index: 0;
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: -1;
  transform: translate(-50%, -50%);
  background-size: cover;
  filter: brightness(0.5) contrast(1.1);
}

.hero-content {
  position: relative;
  z-index: 1;
  color: var(--color-textLight);
  text-align: center;
  padding: 2rem;
  max-width: 900px;
}

.hero-content h1 {
  font-size: 4.5rem;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  text-shadow: 3px 3px 12px rgba(0, 0, 0, 0.8);
  animation: slideInDown 0.8s ease-out;
  letter-spacing: -1px;
}

.hero-content p {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
  animation: slideInUp 0.8s ease-out 0.2s both;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: slideInUp 0.8s ease-out 0.4s both;
}

.hero-buttons .btn {
  font-size: 1.1rem;
  padding: 0.8rem 1.8rem;
  border-radius: 50px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
}

.hero-buttons .btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  transition: left 0.3s ease;
  z-index: -1;
}

.hero-buttons .btn:hover::before {
  left: 100%;
}

.btn-primary-custom {
  background-color: var(--color-primary);
  color: var(--color-dark);
  border: none;
}

.btn-primary-custom:hover {
  background-color: var(--color-primaryHover);
  color: var(--color-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(201, 168, 115, 0.4);
}

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

.btn-secondary-custom:hover {
  background-color: var(--color-primary);
  color: var(--color-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(201, 168, 115, 0.4);
}

/* Section Backgrounds */
.section-light-bg {
  background-color: var(--color-light);
  color: var(--color-text);
  transition: background-color var(--transition-duration) ease, color var(--transition-duration) ease;
}

.section-dark-bg {
  background-color: var(--color-dark);
  color: var(--color-textLight);
  transition: background-color var(--transition-duration) ease, color var(--transition-duration) ease;
}

/* Cards */
.card-custom {
  border: none;
  border-radius: 12px;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  background-color: var(--color-light);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

[data-theme="dark"] .card-custom {
  background-color: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card-custom:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

.card-custom .card-body {
  padding: 1.5rem;
}

/* Icons */
.icon-large {
  font-size: 3rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
  transition: all var(--transition-duration) ease;
}

.icon-large-accent {
  font-size: 3rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
  transition: all var(--transition-duration) ease;
}

.card-custom:hover .icon-large,
.card-custom:hover .icon-large-accent {
  transform: scale(1.2) rotateY(360deg);
}

/* Coffee Recommender Cards */
.coffee-recommender-card {
  background-color: var(--color-light);
  border: 2px solid var(--color-primary);
  border-radius: 12px;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  cursor: pointer;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

[data-theme="dark"] .coffee-recommender-card {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--color-primary);
}

.coffee-recommender-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.coffee-recommender-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.coffee-recommender-card:hover::before {
  left: 100%;
}

.coffee-recommender-card.selected {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primaryHover) 100%);
  color: var(--color-dark);
  transform: translateY(-8px) scale(1.05);
  box-shadow: 0 12px 30px rgba(201, 168, 115, 0.4);
}

.coffee-recommender-card.selected .icon-large-accent {
  color: var(--color-dark);
}

/* Project Cards */
.project-card {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.project-card img {
  width: 100%;
  height: auto;
  transition: transform 0.4s ease;
}

.project-card:hover img {
  transform: scale(1.08);
  filter: brightness(0.7);
}

.project-card .overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(16, 15, 25, 0.95), rgba(16, 15, 25, 0.5));
  color: var(--color-textLight);
  padding: 2rem;
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="dark"] .project-card .overlay {
  background: linear-gradient(to top, rgba(13, 12, 21, 0.95), rgba(13, 12, 21, 0.5));
}

.project-card:hover .overlay {
  transform: translateY(0);
}

/* Testimonials */
.testimonial-quote {
  font-family: 'Lora', serif;
  font-style: italic;
  font-size: 1.6rem;
  line-height: 1.8;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.testimonial-author {
  font-weight: 700;
  color: var(--color-textLight);
  font-size: 1rem;
}

.testimonial-carousel .carousel-control-prev-icon,
.testimonial-carousel .carousel-control-next-icon {
  background-color: var(--color-primary);
  border-radius: 50%;
  padding: 1.5rem;
  transition: all var(--transition-duration) ease;
}

.testimonial-carousel .carousel-control-prev:hover .carousel-control-prev-icon,
.testimonial-carousel .carousel-control-next:hover .carousel-control-next-icon {
  background-color: var(--color-primaryHover);
  transform: scale(1.2);
}

.testimonial-carousel .carousel-indicators [data-bs-target] {
  background-color: var(--color-primary);
  height: 8px;
  width: 8px;
  border-radius: 50%;
  transition: all var(--transition-duration) ease;
}

.testimonial-carousel .carousel-indicators [data-bs-target].active {
  transform: scale(1.3);
}

/* Map Container */
.map-container {
  position: relative;
  height: 400px;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

.map-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

/* Footer */
footer {
  background-color: var(--color-dark);
  color: var(--color-textLight);
  transition: all var(--transition-duration) ease;
  margin-top: 5rem;
}

footer h5 {
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.9rem;
}

footer a {
  color: var(--color-textLight);
  transition: all var(--transition-duration) ease;
  display: inline-block;
}

footer a:hover {
  color: var(--color-primary);
  transform: translateX(4px);
}

footer .btn-floating {
  transition: all var(--transition-duration) ease;
}

footer .btn-floating:hover {
  background-color: var(--color-primary) !important;
  color: var(--color-dark) !important;
  transform: translateY(-4px) scale(1.1);
}

/* Animations */
@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(201, 168, 115, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(201, 168, 115, 0.6);
  }
}

/* Utility Animations */
.animate__animated {
  animation-duration: 0.8s;
  animation-fill-mode: both;
}

.animate__fadeInUp {
  animation-name: slideInUp;
}

.animate__fadeInDown {
  animation-name: slideInDown;
}

.animate__fadeInLeft {
  animation-name: slideInLeft;
}

.animate__fadeInRight {
  animation-name: slideInRight;
}

.animate__fadeIn {
  animation-name: fadeInScale;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-video-container {
    height: 70vh;
  }

  .hero-video {
    display: none;
  }

  .hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
  }

  .hero-content p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 1rem;
  }

  .hero-buttons .btn {
    width: 100%;
    max-width: 300px;
  }

  h2 {
    font-size: 2rem !important;
  }

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

  .navbar-nav .nav-link {
    margin: 0.5rem 0;
  }

  .header-controls {
    justify-content: center;
    margin-top: 1rem;
  }

  .map-container {
    height: 300px;
  }

  .testimonial-quote {
    font-size: 1.3rem;
  }
}

@media (max-width: 576px) {
  .hero-content h1 {
    font-size: 2rem;
  }

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

  .hero-buttons {
    gap: 0.5rem;
  }

  .hero-buttons .btn {
    font-size: 0.95rem;
    padding: 0.6rem 1.2rem;
  }

  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.2rem;
  }

  .card-custom {
    padding: 1rem;
  }

  .testimonial-quote {
    font-size: 1.1rem;
  }

  .testimonial-author {
    font-size: 0.9rem;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Loading State */
.btn:disabled,
.btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Focus Styles */
button:focus,
a:focus,
input:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Print Styles */
@media print {
  .navbar,
  footer,
  .header-controls {
    display: none;
  }

  body {
    background: white;
    color: black;
  }
}