/**
 * Ferienwohnung Kruse - Design System
 * Farben extrahiert aus dem Logo und Nordsee-Thema
 */

:root {
  /* === Farbpalette (aus Logo) === */

  /* Primäre Meerestöne */
  --ocean-deep: #1a4d6d;
  --ocean-medium: #2b7a9e;
  --ocean-light: #5ba3c7;
  --ocean-lighter: #8dc5e3;
  --ocean-pale: #c8e3f0;

  /* Sandtöne */
  --sand-dark: #c9a66b;
  --sand-medium: #d9bd8a;
  --sand-light: #e8d5b7;
  --sand-pale: #f5ede0;

  /* Akzentfarben */
  --wave-foam: #f0f4f8;
  --sunset-orange: #d97642;
  --sunset-pink: #e89b7e;
  --seagull-gray: #6b7280;
  --seagull-light: #9ca3af;

  /* Wattenmeer-Töne */
  --mudflat-dark: #8b7355;
  --mudflat-medium: #a89176;
  --mudflat-light: #c4b5a0;

  /* Neutrals */
  --white: #ffffff;
  --off-white: #fafbfc;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --black: #000000;

  /* === Typografie === */

  /* Font Families */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Font Sizes - Fluid Typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.375vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.35rem + 0.75vw, 1.875rem);
  --text-3xl: clamp(1.875rem, 1.65rem + 1.125vw, 2.25rem);
  --text-4xl: clamp(2.25rem, 1.95rem + 1.5vw, 3rem);
  --text-5xl: clamp(3rem, 2.5rem + 2.5vw, 4rem);
  --text-6xl: clamp(3.75rem, 3rem + 3.75vw, 5rem);

  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* === Spacing (8px Grid) === */
  --space-0: 0;
  --space-1: 0.5rem;
  /* 8px */
  --space-2: 1rem;
  /* 16px */
  --space-3: 1.5rem;
  /* 24px */
  --space-4: 2rem;
  /* 32px */
  --space-5: 2.5rem;
  /* 40px */
  --space-6: 3rem;
  /* 48px */
  --space-8: 4rem;
  /* 64px */
  --space-10: 5rem;
  /* 80px */
  --space-12: 6rem;
  /* 96px */
  --space-16: 8rem;
  /* 128px */
  --space-20: 10rem;
  /* 160px */
  --space-24: 12rem;
  /* 192px */

  /* === Layout === */
  --container-max: 1400px;
  --container-padding: clamp(1rem, 5vw, 3rem);
  --section-spacing: clamp(4rem, 10vw, 8rem);

  /* === Border Radius === */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  /* === Shadows === */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-ocean: 0 10px 30px -5px rgba(26, 77, 109, 0.3);

  /* === Transitions === */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-wave: 1000ms cubic-bezier(0.45, 0.05, 0.55, 0.95);

  /* === Z-Index === */
  --z-background: -1;
  --z-base: 0;
  --z-content: 10;
  --z-header: 100;
  --z-overlay: 200;
  --z-modal: 300;
  --z-chatbot: 400;
  --z-tooltip: 500;

  /* === Tidal System === */
  --water-level: 100%;
  /* Dynamisch via JS */
  --tide-transition: 0.3s ease-out;
}

/* === Global Resets === */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--gray-800);
  background-color: var(--off-white);
  overflow-x: hidden;
}

/* === Typography Utilities === */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--ocean-deep);
  margin-bottom: var(--space-3);
}

h1 {
  font-size: var(--text-5xl);
}

h2 {
  font-size: var(--text-4xl);
}

h3 {
  font-size: var(--text-3xl);
}

h4 {
  font-size: var(--text-2xl);
}

h5 {
  font-size: var(--text-xl);
}

h6 {
  font-size: var(--text-lg);
}

p {
  margin-bottom: var(--space-3);
  color: var(--gray-700);
}

a {
  color: var(--ocean-medium);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--ocean-deep);
}

/* === Layout Utilities === */

.container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.section {
  padding-top: var(--section-spacing);
  padding-bottom: var(--section-spacing);
}

/* === Button Styles === */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 1;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--ocean-medium) 0%, var(--ocean-deep) 100%);
  color: var(--white);
  box-shadow: var(--shadow-ocean);
}

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

.btn-secondary {
  background: var(--sand-medium);
  color: var(--ocean-deep);
}

.btn-secondary:hover {
  background: var(--sand-dark);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background: var(--ocean-medium);
  color: var(--white);
}

/* === Card Styles === */

.card {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 8px 32px rgba(31, 38, 135, 0.15);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(91, 163, 199, 0.1) 0%, rgba(26, 77, 109, 0.1) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 0;
}

.card:hover::before {
  opacity: 1;
}

.card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 20px 60px rgba(26, 77, 109, 0.25);
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(91, 163, 199, 0.5);
}

.card>* {
  position: relative;
  z-index: 1;
}

/* === Utility Classes === */

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

.text-ocean {
  color: var(--ocean-medium);
}

.text-sand {
  color: var(--sand-dark);
}

.bg-ocean {
  background-color: var(--ocean-medium);
}

.bg-sand {
  background-color: var(--sand-light);
}

.gradient-ocean {
  background: linear-gradient(135deg, var(--ocean-light) 0%, var(--ocean-deep) 100%);
}

.gradient-sunset {
  background: linear-gradient(135deg, var(--sunset-pink) 0%, var(--sunset-orange) 100%);
}

/* === Responsive Utilities === */

@media (max-width: 768px) {
  :root {
    --container-padding: 1rem;
    --section-spacing: 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}