/*
 * Wild Way — Khon Kaen Zoo Kiosk
 * Canonical design tokens
 *
 * Naming layers:
 * 1. Primitive: raw visual values, e.g. --color-green-600
 * 2. Semantic: usage intent, e.g. --color-action-primary
 * 3. Component: local contracts, e.g. --nav-center-size
 */

:root {
  /* ------------------------------------------------------------
     Primitive color palette
     ------------------------------------------------------------ */
  --color-white: #ffffff;
  --color-black: #000000;

  --color-green-25: #f8faf7;
  --color-green-50: #f5faf3;
  --color-green-75: #f6f8f4;
  --color-green-100: #edf7e9;
  --color-green-150: #eaf3e7;
  --color-green-200: #dbe6df;
  --color-green-250: #cfe5d8;
  --color-green-300: #b9e28e;
  --color-green-400: #79be32;
  --color-green-500: #7bc344;
  --color-green-600: #2f8d22;
  --color-green-700: #25721c;
  --color-green-800: #15522d;
  --color-green-900: #0f4c27;

  --color-neutral-25: #f7f9f6;
  --color-neutral-50: #f5f6f2;
  --color-neutral-100: #f0f3ee;
  --color-neutral-150: #e4e9df;
  --color-neutral-200: #dce4d9;
  --color-neutral-300: #cdddc9;
  --color-neutral-400: #9aa49c;
  --color-neutral-500: #748176;
  --color-neutral-600: #59685e;
  --color-neutral-700: #24352a;

  --color-orange-50: #fff0e9;
  --color-orange-500: #ee744f;
  --color-orange-600: #e97b3f;
  --color-orange-700: #b24d30;

  --color-purple-50: #f3edf9;
  --color-purple-500: #7653a6;
  --color-purple-700: #705a83;

  --color-teal-500: #147b82;
  --color-red-500: #e2533c;
  --color-red-600: #d9573e;
  --color-amber-50: #fff5dc;
  --color-amber-700: #76634d;

  /* Legacy dark-theme primitives retained for inherited base rules. */
  --color-night-950: #061b24;
  --color-night-900: #08232d;
  --color-night-850: #0b2a34;
  --color-night-800: #10282b;
  --color-panel-700: #103640;
  --color-panel-600: #164650;
  --color-mint-400: #61e6c8;
  --color-sand-100: #f0ecdf;

  /* ------------------------------------------------------------
     Semantic colors — use these in product components
     ------------------------------------------------------------ */
  --color-canvas: var(--color-green-250);
  --color-app-surface: var(--color-neutral-50);
  --color-surface: var(--color-white);
  --color-surface-subtle: var(--color-green-75);
  --color-surface-success: var(--color-green-100);
  --color-surface-warning: var(--color-amber-50);
  --color-surface-accessible: var(--color-purple-50);
  --color-overlay: rgba(248, 250, 247, 0.98);
  --color-nav-overlay: rgba(255, 255, 255, 0.96);

  --color-text-primary: var(--color-neutral-700);
  --color-text-secondary: var(--color-neutral-500);
  --color-text-tertiary: var(--color-neutral-400);
  --color-text-inverse: var(--color-white);
  --color-text-brand: var(--color-green-800);
  --color-text-action: var(--color-green-700);
  --color-text-warning: var(--color-amber-700);
  --color-text-danger: var(--color-orange-700);
  --color-text-accessible: var(--color-purple-700);

  --color-brand-primary: var(--color-green-600);
  --color-brand-strong: var(--color-green-800);
  --color-brand-dark: var(--color-green-700);
  --color-brand-highlight: var(--color-green-400);
  --color-action-primary: var(--color-green-600);
  --color-action-primary-hover: var(--color-green-700);
  --color-action-primary-selected: var(--color-green-800);
  --color-action-disabled: #66816a;
  --color-action-disabled-text: #d5dfd2;

  --color-border-subtle: var(--color-neutral-150);
  --color-border-control: var(--color-neutral-200);
  --color-border-action: #b9cdb6;
  --color-border-success: #79b96d;
  --color-border-warning: #f2c8b8;
  --color-focus-ring: rgba(47, 141, 34, 0.10);

  --color-map-animal: var(--color-green-600);
  --color-map-activity: var(--color-orange-600);
  --color-map-service: var(--color-teal-500);
  --color-map-accessible: var(--color-purple-500);
  --color-map-current-location: var(--color-red-500);

  /* Backward-compatible aliases used by index.html. */
  --night: var(--color-night-950);
  --night-2: var(--color-night-850);
  --panel: var(--color-panel-700);
  --panel-2: var(--color-panel-600);
  --forest: var(--color-brand-strong);
  --leaf: var(--color-brand-primary);
  --leaf-dark: var(--color-brand-dark);
  --lime: var(--color-brand-highlight);
  --cream: #f7f4e9;
  --paper: var(--color-surface);
  --ink: var(--color-text-primary);
  --muted: var(--color-text-secondary);
  --line: var(--color-border-subtle);
  --coral: var(--color-orange-500);
  --mint: var(--color-brand-primary);
  --sand: var(--color-sand-100);
  --white: var(--color-white);

  /* ------------------------------------------------------------
     Typography
     ------------------------------------------------------------ */
  --font-family-sans: 'IBM Plex Sans Thai', 'Noto Sans Thai', system-ui, sans-serif;
  --font-family-display: 'Space Grotesk', 'IBM Plex Sans Thai', system-ui, sans-serif;
  --font-family-icon: 'Material Symbols Rounded';

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --font-size-2xs: 8px;
  --font-size-xs: 9px;
  --font-size-sm: 10px;
  --font-size-md: 11px;
  --font-size-base: 12px;
  --font-size-lg: 13px;
  --font-size-xl: 15px;
  --font-size-2xl: 18px;
  --font-size-3xl: 20px;
  --font-size-4xl: 23px;
  --font-size-5xl: 24px;
  --font-size-6xl: 25px;
  --font-size-display-sm: 36px;
  --font-size-display-md: 52px;
  --font-size-display-lg: 88px;

  --line-height-tight: 1.00;
  --line-height-heading: 1.25;
  --line-height-body: 1.50;
  --line-height-relaxed: 1.65;
  --line-height-reading: 1.75;
  --line-height-loose: 1.80;

  --letter-spacing-tight: -0.055em;
  --letter-spacing-display: -0.07em;
  --letter-spacing-button: 0.03em;
  --letter-spacing-label: 0.07em;
  --letter-spacing-eyebrow: 0.12em;
  --letter-spacing-caps: 0.18em;

  /* ------------------------------------------------------------
     Spacing — 4 px base grid with optical intermediate values
     ------------------------------------------------------------ */
  --space-0: 0;
  --space-0-5: 2px;
  --space-1: 4px;
  --space-1-25: 5px;
  --space-1-5: 6px;
  --space-1-75: 7px;
  --space-2: 8px;
  --space-2-25: 9px;
  --space-2-5: 10px;
  --space-2-75: 11px;
  --space-3: 12px;
  --space-3-25: 13px;
  --space-3-5: 14px;
  --space-3-75: 15px;
  --space-4: 16px;
  --space-4-5: 18px;
  --space-5: 20px;
  --space-5-5: 22px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;
  --space-9: 36px;
  --space-10: 40px;
  --space-11: 44px;
  --space-12: 48px;
  --space-14: 56px;
  --space-16: 64px;
  --space-18: 72px;
  --space-21: 84px;
  --space-22: 88px;

  /* ------------------------------------------------------------
     Shape and border
     ------------------------------------------------------------ */
  --border-width-thin: 1px;
  --border-width-strong: 2px;
  --border-width-pin: 3px;
  --border-width-nav-focus: 3px;
  --border-width-nav-keyline: 5px;

  --radius-xs: 7px;
  --radius-sm: 8px;
  --radius-control: 9px;
  --radius-md: 10px;
  --radius-field: 11px;
  --radius-button: 12px;
  --radius-card-sm: 13px;
  --radius-card: 14px;
  --radius-card-lg: 16px;
  --radius-panel: 18px;
  --radius-map: 19px;
  --radius-modal: 20px;
  --radius-screen: 25px;
  --radius-device: 34px;
  --radius-pill: 999px;
  --radius-circle: 50%;

  /* ------------------------------------------------------------
     Elevation and effects
     ------------------------------------------------------------ */
  --shadow-device: 0 32px 80px rgba(41, 73, 49, 0.24), 0 0 0 1px rgba(38, 74, 46, 0.08);
  --shadow-card: 0 7px 20px rgba(46, 74, 53, 0.07);
  --shadow-card-soft: 0 7px 20px rgba(46, 74, 53, 0.06);
  --shadow-action: 0 9px 22px rgba(47, 141, 34, 0.20);
  --shadow-success: 0 14px 30px rgba(47, 141, 34, 0.24);
  --shadow-map: 0 12px 30px rgba(31, 72, 40, 0.16);
  --shadow-map-pin: 0 4px 12px rgba(23, 72, 34, 0.34);
  --shadow-sheet: 0 12px 26px rgba(26, 61, 33, 0.22);
  --shadow-modal: 0 16px 38px rgba(33, 75, 42, 0.12);
  --shadow-nav-center: 0 7px 18px rgba(47, 141, 34, 0.30);
  --shadow-nav-center-active: 0 0 0 3px var(--color-green-300), 0 8px 20px rgba(21, 82, 45, 0.32);
  --backdrop-blur-sm: 10px;
  --backdrop-blur-md: 12px;
  --backdrop-blur-lg: 14px;

  /* ------------------------------------------------------------
     Motion
     ------------------------------------------------------------ */
  --duration-fast: 180ms;
  --duration-base: 200ms;
  --duration-slow: 220ms;
  --easing-standard: ease;
  --easing-emphasized: cubic-bezier(0.2, 0.8, 0.2, 1);
  --motion-fade-distance: 5px;

  /* ------------------------------------------------------------
     Layering
     ------------------------------------------------------------ */
  --z-base: 0;
  --z-pin: 2;
  --z-pin-active: 4;
  --z-sheet: 5;
  --z-navigation: 20;
  --z-modal: 30;
  --z-modal-critical: 31;

  /* ------------------------------------------------------------
     Layout and control sizing
     ------------------------------------------------------------ */
  --page-max-width: 1260px;
  --device-width: 444px;
  --device-padding: 9px;
  --device-height: 754px;
  --bottom-nav-height: 72px;
  --bottom-nav-columns: 5;
  --touch-target-min: 44px;
  --control-height-sm: 34px;
  --control-height-md: 42px;
  --control-height-lg: 48px;
  --control-height-xl: 52px;
  --icon-size-sm: 18px;
  --icon-size-md: 21px;
  --icon-size-lg: 27px;
  --map-height-route: 330px;
  --map-height-full: 545px;
  --qr-size-inline: 146px;
  --qr-size-modal: 260px;

  /* ------------------------------------------------------------
     Component contracts
     ------------------------------------------------------------ */
  --button-primary-height: var(--control-height-xl);
  --button-primary-radius: var(--radius-card);
  --button-primary-bg: var(--color-action-primary);
  --button-primary-fg: var(--color-text-inverse);
  --button-secondary-height: var(--control-height-lg);
  --button-secondary-radius: var(--radius-card-sm);

  --card-bg: var(--color-surface);
  --card-radius: var(--radius-card-lg);
  --card-shadow: var(--shadow-card-soft);
  --card-padding: var(--space-3-5);

  --field-height: var(--touch-target-min);
  --field-radius: var(--radius-field);
  --field-bg: var(--color-neutral-25);
  --field-border: var(--color-border-control);

  --nav-bg: var(--color-nav-overlay);
  --nav-height: var(--bottom-nav-height);
  --nav-icon-size: var(--icon-size-md);
  --nav-label-size: var(--font-size-2xs);
  --nav-center-size: 58px;
  --nav-center-offset: -25px;
  --nav-center-icon-size: var(--icon-size-lg);
  --nav-center-keyline: var(--border-width-nav-keyline);

  --map-pin-size: 36px;
  --map-pin-icon-size: var(--icon-size-sm);
  --map-pin-border: var(--border-width-pin);
  --map-sheet-radius: 15px;

  --modal-bg: var(--color-overlay);
  --modal-z: var(--z-modal);
  --help-modal-z: var(--z-modal-critical);

  /* ------------------------------------------------------------
     Responsive breakpoints
     ------------------------------------------------------------ */
  --breakpoint-mobile: 520px;
  --breakpoint-tablet: 900px;
}