/* === Tour Planner Design System === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&family=Playfair+Display:ital,wght@0,600;0,700;1,600&display=swap');

:root {
  /* Core Colors */
  --color-primary: hsl(220, 90%, 56%);
  --color-primary-dark: hsl(220, 90%, 42%);
  --color-primary-light: hsl(220, 90%, 70%);
  --color-primary-glow: hsla(220, 90%, 56%, 0.35);
  
  --color-accent: hsl(38, 95%, 55%);
  --color-accent-dark: hsl(38, 95%, 40%);
  --color-accent-light: hsl(38, 95%, 70%);
  --color-accent-glow: hsla(38, 95%, 55%, 0.3);
  
  /* Background (Dark Mode Default) */
  --color-bg-base: hsl(222, 28%, 8%);
  --color-bg-surface: hsl(222, 22%, 13%);
  --color-bg-elevated: hsl(222, 18%, 18%);
  --color-bg-card: hsla(222, 22%, 15%, 0.85);
  --color-bg-overlay: hsla(222, 28%, 5%, 0.82);
  
  /* Text */
  --color-text-primary: hsl(210, 40%, 96%);
  --color-text-secondary: hsl(210, 20%, 68%);
  --color-text-muted: hsl(210, 15%, 48%);
  
  /* Borders */
  --color-border: hsl(220, 15%, 22%);
  --color-border-light: hsl(220, 15%, 30%);
  --color-border-focus: hsl(220, 90%, 60%);
  
  /* Status Colors */
  --color-success: hsl(142, 70%, 45%);
  --color-success-bg: hsla(142, 70%, 45%, 0.15);
  --color-warning: hsl(38, 95%, 55%);
  --color-warning-bg: hsla(38, 95%, 55%, 0.15);
  --color-danger: hsl(0, 75%, 55%);
  --color-danger-bg: hsla(0, 75%, 55%, 0.15);
  --color-info: hsl(199, 89%, 48%);
  --color-info-bg: hsla(199, 89%, 48%, 0.15);
  
  /* Category Colors */
  --color-cat-wisata: hsl(220, 90%, 56%);
  --color-cat-makan: hsl(142, 70%, 45%);
  --color-cat-transportasi: hsl(280, 70%, 60%);
  --color-cat-checkin: hsl(38, 95%, 55%);
  --color-cat-akomodasi: hsl(265, 80%, 65%);
  --color-cat-belanja: hsl(340, 75%, 58%);
  --color-cat-lainnya: hsl(210, 20%, 55%);
  
  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Outfit', sans-serif;
  --font-hero: 'Playfair Display', serif;
  
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */
  --text-5xl: 3rem;       /* 48px */
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Border Radius */
  --radius-xs: 0.25rem;
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows & Glow */
  --shadow-sm: 0 2px 4px hsla(0, 0%, 0%, 0.3);
  --shadow-md: 0 6px 18px hsla(0, 0%, 0%, 0.4);
  --shadow-lg: 0 12px 36px hsla(0, 0%, 0%, 0.5);
  --shadow-glow-primary: 0 0 25px var(--color-primary-glow);
  --shadow-glow-accent: 0 0 25px var(--color-accent-glow);
  
  /* 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);
  
  /* Z-Index */
  --z-dropdown: 100;
  --z-sticky: 150;
  --z-modal-backdrop: 200;
  --z-modal: 210;
  --z-toast: 300;
  --z-tooltip: 400;
}

/* === CSS Reset & Base Rules === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-border-light);
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text-primary);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  color: var(--color-text-secondary);
  font-size: var(--text-base);
}

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

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

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

input, select, textarea {
  font-family: var(--font-body);
  color: var(--color-text-primary);
}

/* === Utility Classes === */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.page-wrapper {
  min-height: calc(100vh - 80px);
  padding: var(--space-8) 0 var(--space-16);
}

.page-header {
  margin-bottom: var(--space-8);
}

.page-title {
  font-size: var(--text-3xl);
  font-family: var(--font-display);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.page-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  max-width: 650px;
}

/* Glassmorphism */
.glass {
  background: hsla(222, 22%, 15%, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.glass-dark {
  background: hsla(222, 28%, 10%, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.glass-card {
  background: linear-gradient(135deg, hsla(222, 22%, 18%, 0.8), hsla(222, 22%, 12%, 0.9));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

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

/* Gradient Utilities */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-hero {
  background: linear-gradient(135deg, hsl(0, 0%, 100%) 30%, var(--color-accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-gradient-hero {
  background: 
    radial-gradient(ellipse at 15% 30%, hsla(220, 90%, 40%, 0.25) 0%, transparent 60%),
    radial-gradient(ellipse at 85% 20%, hsla(38, 95%, 45%, 0.18) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, hsla(280, 70%, 40%, 0.12) 0%, transparent 60%),
    var(--color-bg-base);
}

/* Grid System */
.grid-1 { display: grid; grid-template-columns: 1fr; gap: var(--space-6); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

/* Responsive Grids */
@media (max-width: 1100px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .container { padding: 0 var(--space-4); }
  h1 { font-size: var(--text-3xl); }
  .page-title { font-size: var(--text-2xl); }
}

/* Flex Utilities */
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.flex-gap-2 { display: flex; gap: var(--space-2); }
.flex-gap-4 { display: flex; gap: var(--space-4); }
.flex-col { display: flex; flex-direction: column; }

/* Form Controls */
.input-field, .select-field, .textarea-field {
  width: 100%;
  background: hsla(222, 28%, 10%, 0.8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-field:focus, .select-field:focus, .textarea-field:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px hsla(220, 90%, 56%, 0.2);
  outline: none;
}

.input-field::placeholder, .textarea-field::placeholder {
  color: var(--color-text-muted);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.input-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge-primary { background: var(--color-primary-glow); color: var(--color-primary-light); border: 1px solid hsla(220, 90%, 56%, 0.3); }
.badge-accent { background: var(--color-accent-glow); color: var(--color-accent-light); border: 1px solid hsla(38, 95%, 55%, 0.3); }
.badge-success { background: var(--color-success-bg); color: var(--color-success); border: 1px solid hsla(142, 70%, 45%, 0.3); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); border: 1px solid hsla(38, 95%, 55%, 0.3); }
.badge-danger { background: var(--color-danger-bg); color: var(--color-danger); border: 1px solid hsla(0, 75%, 55%, 0.3); }
.badge-neutral { background: hsla(220, 15%, 25%, 0.6); color: var(--color-text-secondary); border: 1px solid var(--color-border); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #ffffff;
  box-shadow: 0 4px 14px var(--color-primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  box-shadow: 0 6px 20px hsla(220, 90%, 56%, 0.5);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: hsl(222, 28%, 8%);
  font-weight: 700;
  box-shadow: 0 4px 14px var(--color-accent-glow);
}

.btn-accent:hover {
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
  box-shadow: 0 6px 20px hsla(38, 95%, 55%, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: hsla(222, 18%, 24%, 1);
  border-color: var(--color-border-light);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  background: hsla(220, 15%, 25%, 0.4);
  color: var(--color-text-primary);
}

.btn-danger {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid hsla(0, 75%, 55%, 0.3);
}

.btn-danger:hover {
  background: var(--color-danger);
  color: #ffffff;
}

.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn-icon {
  padding: var(--space-2);
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Animations Keyframes */
@keyframes pulse-slow {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.05); }
}

.animate-pulse-slow {
  animation: pulse-slow 6s ease-in-out infinite;
}