/* Kristály Kávé - Modern Design System with Theme Switching & Bento Grids */

/* ============================================================================
   THEME VARIABLES & ROOT STYLES
   ============================================================================ */

:root {
  /* Light Theme Colors */
  --color-bg-primary: #fef8f3;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #f5f1ed;

  --color-text-primary: #2c2c2c;
  --color-text-secondary: #5a5a5a;
  --color-text-light: #8b8b8b;

  --color-brand-primary: #6c5b7b;
  --color-brand-secondary: #a29b7c;
  --color-brand-accent: #f5cdde;
  --color-brand-light: #d4a5c6;

  --color-border: #e8e0d9;
  --color-shadow: rgba(0, 0, 0, 0.08);

  /* Dark Theme Colors (will be overridden) */
  --color-bg-primary-dark: #0f0f12;
  --color-bg-secondary-dark: #1a1a1f;
  --color-bg-tertiary-dark: #242429;

  --color-text-primary-dark: #e8e8e8;
  --color-text-secondary-dark: #b0b0b0;
  --color-text-light-dark: #808080;

  --color-brand-primary-dark: #9b8ead;
  --color-brand-secondary-dark: #c4b89f;
  --color-brand-accent-dark: #f5cdde;
  --color-brand-light-dark: #b88fb5;

  --color-border-dark: #333339;
  --color-shadow-dark: rgba(0, 0, 0, 0.4);

  /* Typography */
  --font-heading: 'Playfair Display', 'Bodoni MT', serif;
  --font-subheading: 'Lora', serif;
  --font-body: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;

  --font-size-h1: 3.5rem;
  --font-size-h2: 2.5rem;
  --font-size-h3: 1.875rem;
  --font-size-h4: 1.5rem;
  --font-size-h5: 1.25rem;
  --font-size-h6: 1.1rem;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-xs: 0.75rem;

  --line-height-tight: 1.2;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 var(--color-shadow);
  --shadow-md: 0 4px 6px -1px var(--color-shadow);
  --shadow-lg: 0 10px 15px -3px var(--color-shadow);
  --shadow-xl: 0 20px 25px -5px var(--color-shadow);
  --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.1);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
html[data-theme="dark"] {
  --color-bg-primary: var(--color-bg-primary-dark);
  --color-bg-secondary: var(--color-bg-secondary-dark);
  --color-bg-tertiary: var(--color-bg-tertiary-dark);

  --color-text-primary: var(--color-text-primary-dark);
  --color-text-secondary: var(--color-text-secondary-dark);
  --color-text-light: var(--color-text-light-dark);

  --color-brand-primary: var(--color-brand-primary-dark);
  --color-brand-secondary: var(--color-brand-secondary-dark);
  --color-brand-accent: var(--color-brand-accent-dark);
  --color-brand-light: var(--color-brand-light-dark);

  --color-border: var(--color-border-dark);
  --color-shadow: var(--color-shadow-dark);
}

/* ============================================================================
   BASE STYLES
   ============================================================================ */

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

html {
  scroll-behavior: smooth;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

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

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-lg);
  color: var(--color-brand-primary);
  letter-spacing: -0.02em;
}

h1, .h1 { font-size: var(--font-size-h1); }
h2, .h2 { font-size: var(--font-size-h2); }
h3, .h3 { font-size: var(--font-size-h3); }
h4, .h4 { font-size: var(--font-size-h4); }
h5, .h5 { font-size: var(--font-size-h5); }
h6, .h6 { font-size: var(--font-size-h6); }

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

.lead {
  font-size: 1.125rem;
  font-weight: 300;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-brand-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--color-brand-secondary);
  text-decoration: underline;
}

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

.navbar {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
  box-shadow: 0 1px 3px var(--color-shadow);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-brand-primary);
  letter-spacing: -0.02em;
}

.navbar-nav .nav-link {
  color: var(--color-text-secondary);
  margin: 0 var(--spacing-sm);
  transition: color var(--transition-normal);
  font-weight: 500;
  position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--color-brand-primary);
}

.navbar-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-brand-primary);
  border-radius: 2px;
}

/* Theme & Language Toggles */
.theme-language-controls {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

#themeToggleBtn,
#languageToggleBtn {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

#themeToggleBtn:hover,
#languageToggleBtn:hover {
  background-color: var(--color-bg-tertiary);
  transform: scale(1.1);
}

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

.btn {
  font-family: var(--font-body);
  font-weight: 600;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  cursor: pointer;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary {
  background-color: var(--color-brand-primary);
  color: white;
  border-color: var(--color-brand-primary);
}

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

.btn-secondary {
  background-color: var(--color-brand-secondary);
  color: white;
  border-color: var(--color-brand-secondary);
}

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

.btn-outline {
  background-color: transparent;
  color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
}

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

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1rem;
}

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

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

.hero-section {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: var(--spacing-3xl) var(--spacing-xl);
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-brand-primary) 0%, var(--color-brand-secondary) 100%);
  opacity: 0.1;
  z-index: 0;
}

.hero-section h1 {
  color: white;
  font-size: clamp(2rem, 8vw, var(--font-size-h1));
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease-out;
}

.hero-section p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-2xl);
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

/* ============================================================================
   BENTO GRID LAYOUT
   ============================================================================ */

.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
  padding: var(--spacing-2xl) 0;
}

.bento-grid-2x {
  grid-template-columns: repeat(2, 1fr);
}

.bento-grid-3x {
  grid-template-columns: repeat(3, 1fr);
}

.bento-grid-4x {
  grid-template-columns: repeat(4, 1fr);
}

.bento-tile {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.bento-tile::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-brand-accent) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.bento-tile:hover {
  border-color: var(--color-brand-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.bento-tile:hover::before {
  opacity: 0.05;
}

.bento-tile.span-2 {
  grid-column: span 2;
}

.bento-tile.span-2-row {
  grid-row: span 2;
}

.bento-tile img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  object-fit: cover;
}

.bento-tile h3 {
  font-size: var(--font-size-h4);
  margin-bottom: var(--spacing-md);
}

.bento-tile p {
  flex-grow: 1;
  margin-bottom: var(--spacing-lg);
}

.bento-tile .btn {
  align-self: flex-start;
  margin-top: auto;
}

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

.card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  border-color: var(--color-brand-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-img-top {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

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

.card-title {
  color: var(--color-brand-primary);
  margin-bottom: var(--spacing-md);
}

.card-text {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ============================================================================
   CONTAINERS & SECTIONS
   ============================================================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

section {
  padding: var(--spacing-3xl) 0;
}

section.bg-light,
section.bg-secondary {
  background-color: var(--color-bg-tertiary);
}

section.bg-dark,
section.bg-dark-custom {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

html[data-theme="dark"] section.bg-dark,
html[data-theme="dark"] section.bg-dark-custom {
  background-color: #1a1a1f;
}

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

footer {
  background-color: var(--color-brand-primary);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-3xl);
}

html[data-theme="dark"] footer {
  background-color: #0f0f12;
  border-top: 1px solid var(--color-border);
}

footer h6 {
  color: var(--color-brand-accent);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

footer a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-normal);
}

footer a:hover {
  color: white;
}

footer .social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: rgba(255, 255, 255, 0.1);
  margin-right: var(--spacing-md);
  transition: all var(--transition-normal);
}

footer .social-links a:hover {
  background-color: var(--color-brand-accent);
  color: var(--color-brand-primary);
}

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

.form-control,
.form-select {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  transition: all var(--transition-normal);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 3px rgba(108, 91, 123, 0.1);
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.form-label {
  color: var(--color-text-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

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

.slide-in-right {
  animation: slideInRight 0.6s ease-out;
}

/* Stagger animations */
.fade-in-stagger > * {
  animation: fadeInUp 0.6s ease-out backwards;
}

.fade-in-stagger > *:nth-child(1) { animation-delay: 0s; }
.fade-in-stagger > *:nth-child(2) { animation-delay: 0.1s; }
.fade-in-stagger > *:nth-child(3) { animation-delay: 0.2s; }
.fade-in-stagger > *:nth-child(4) { animation-delay: 0.3s; }
.fade-in-stagger > *:nth-child(5) { animation-delay: 0.4s; }

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

.text-primary { color: var(--color-brand-primary); }
.text-secondary { color: var(--color-brand-secondary); }
.text-accent { color: var(--color-brand-accent); }
.text-muted { color: var(--color-text-light); }

.bg-primary { background-color: var(--color-brand-primary); }
.bg-secondary { background-color: var(--color-brand-secondary); }
.bg-accent { background-color: var(--color-brand-accent); }

.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

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

.m-xl { margin: var(--spacing-xl); }
.m-2xl { margin: var(--spacing-2xl); }
.m-3xl { margin: var(--spacing-3xl); }

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

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

.gap-xl { gap: var(--spacing-xl); }
.gap-2xl { gap: var(--spacing-2xl); }

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

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { flex-direction: column; }
.gap-md { gap: var(--spacing-md); }

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

@media (max-width: 768px) {
  :root {
    --font-size-h1: 2.5rem;
    --font-size-h2: 1.875rem;
    --font-size-h3: 1.5rem;
    --spacing-2xl: 2rem;
    --spacing-3xl: 2.5rem;
  }

  .container {
    padding: 0 var(--spacing-lg);
  }

  section {
    padding: var(--spacing-2xl) 0;
  }

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

  .navbar-nav .nav-link {
    margin: var(--spacing-sm) 0;
  }

  .bento-grid-2x,
  .bento-grid-3x,
  .bento-grid-4x {
    grid-template-columns: 1fr;
  }

  .bento-tile.span-2,
  .bento-tile.span-2-row {
    grid-column: 1;
    grid-row: auto;
  }

  .hero-section {
    min-height: 50vh;
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

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

@media (max-width: 576px) {
  :root {
    --font-size-h1: 2rem;
    --font-size-h2: 1.5rem;
    --font-size-h3: 1.25rem;
    --spacing-2xl: 1.5rem;
    --spacing-3xl: 2rem;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

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

  .hero-content {
    padding: var(--spacing-lg);
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: var(--radius-lg);
  }
}

/* ============================================================================
   ACCESSIBILITY
   ============================================================================ */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

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

/* Cookie Banner */
#cookieConsentBanner {
  background-color: var(--color-brand-primary);
  color: white;
  padding: var(--spacing-lg);
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  box-shadow: 0 -2px 10px var(--color-shadow);
}

html[data-theme="dark"] #cookieConsentBanner {
  background-color: #1a1a1f;
  border-top: 1px solid var(--color-border);
}