/* Hallmark · design-system: design.md · designed-as-app
 * theme: studied-DNA "Panda Teal" · studied: yes
 * DNA-source: url https://travelerspanda.com/ (visual system, at client's request — no content/photos copied)
 * observed: deep-teal #003839 brand · mint #eaf3f1 soft sections · white paper · grey body #7a7a7a
 *           · El Messiri headings (600) + Inter body · pill buttons (50px) · rounded cards (15px)
 * adopted: all of the above, populated with Beyond Borders' own copy & photos
 * axes: light / humanist-display / cool-teal (194°)
 * context: user-confirmed clone base ("copy to be like Travel Panda, I'll customize") · Beyond Borders Adventures
 */

:root {
  /* ---- Colour — "Panda Teal" (Travel Panda DNA): deep-teal brand on
          white with mint soft sections; grey body, slate headings. ---- */
  --color-paper:        oklch(99% 0.003 195);   /* white */
  --color-paper-2:      oklch(95.5% 0.012 178); /* mint #eaf3f1 — alternate sections */
  --color-paper-3:      oklch(92.5% 0.016 180); /* deeper mint */
  --color-ink:          oklch(24% 0.035 255);   /* slate headings #0f172a */
  --color-ink-2:        oklch(48% 0.012 220);   /* grey body (AA-safe take on #7a7a7a) */
  --color-muted:        oklch(56% 0.01 210);    /* lighter grey — meta labels */
  --color-rule:         oklch(90% 0.01 190);
  --color-rule-2:       oklch(94% 0.008 190);

  /* Deep-teal brand #003839 — CTA fills, links, active bars. Dark, so text
     ON it is WHITE (accent-ink); teal-as-text on white clears WCAG easily. */
  --color-accent:       oklch(31% 0.045 194);
  --color-accent-hover: oklch(26% 0.045 194);
  --color-accent-ink:   oklch(99% 0.003 195);
  --color-accent-tint:  oklch(31% 0.045 194 / 0.12);
  --color-focus:        oklch(45% 0.07 194);

  /* Same deep teal as the structural / secondary brand colour. */
  --color-primary:       oklch(31% 0.045 194);
  --color-primary-hover: oklch(26% 0.045 194);
  --color-primary-ink:   oklch(99% 0.003 195);
  --color-primary-tint:  oklch(31% 0.045 194 / 0.1);

  --color-whatsapp:     #25d366; /* WhatsApp brand green — widget only, palette-exempt */
  --color-whatsapp-ink: #ffffff;

  /* Dark bands / footer — deep teal. */
  --color-basalt:       oklch(28% 0.045 194);
  --color-basalt-2:     oklch(33% 0.045 194);
  --color-basalt-ink:   oklch(97% 0.006 185);
  --color-basalt-muted: oklch(80% 0.03 185);
  --color-basalt-rule:  oklch(42% 0.04 190);

  --color-good:         oklch(31% 0.045 194);
  --color-good-tint:    oklch(31% 0.045 194 / 0.1);
  --color-bad:          oklch(50% 0.17 28);
  --color-bad-tint:     oklch(50% 0.17 28 / 0.08);
  --color-scrim:        linear-gradient(180deg, oklch(20% 0.03 200 / 0.2), oklch(14% 0.03 200 / 0.66));

  /* ---- Type -------------------------------------------------- */
  /* Panda Teal: El Messiri display (elegant humanist, weight 600–700) over
     Inter body — the Travel Panda pairing. */
  --font-display: "El Messiri", ui-sans-serif, system-ui, sans-serif;
  --font-body:    "Inter", ui-sans-serif, system-ui, sans-serif;

  --text-xs:   0.8rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-md:   1.25rem;
  --text-lg:   1.5625rem;
  --text-xl:   1.9531rem;
  --text-2xl:  2.4414rem;
  --text-display-s: clamp(2.1rem, 3vw + 1rem, 3.4rem);
  --text-display:   clamp(2.75rem, 5vw + 1rem, 5rem);

  /* ---- Space (4pt) ------------------------------------------- */
  --space-3xs: 0.125rem;
  --space-2xs: 0.25rem;
  --space-xs:  0.5rem;
  --space-sm:  0.75rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 9rem;

  /* ---- Rules, radii, depth ----------------------------------- */
  --rule-hair: 1px;
  --radius-card:  15px; /* Travel Panda rounded cards / tiles / images */
  --radius-input: 8px;
  --radius-pill:  999px;
  --shadow-whisper: 0 1px 2px oklch(20% 0.01 60 / 0.05);
  --shadow-card:  0 18px 40px oklch(28% 0.04 200 / 0.10); /* soft lift under cards */

  /* ---- Motion ------------------------------------------------ */
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:     cubic-bezier(0.7, 0, 0.84, 0);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-micro: 120ms;
  --dur-short: 220ms;
  --dur-long:  420ms;

  /* ---- Z scale ----------------------------------------------- */
  --z-base: 1;
  --z-raised: 10;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 400;
  --z-toast: 500;
  --z-tooltip: 600;

  /* ---- Bootstrap 5.3 bridge ---------------------------------- */
  --bs-body-bg: var(--color-paper);
  --bs-body-color: var(--color-ink-2); /* grey body copy, Travel Panda style; headings stay slate */
  --bs-body-font-family: var(--font-body);
  --bs-body-font-weight: 400;
  --bs-body-line-height: 1.65;
  --bs-border-radius: var(--radius-input);
  --bs-border-radius-lg: var(--radius-card);
  --bs-border-color: var(--color-rule);
  --bs-heading-color: var(--color-ink);
  --bs-link-color: var(--color-primary);
  --bs-link-hover-color: var(--color-primary-hover);
  --bs-secondary-color: var(--color-muted);

  /* ---- Legacy --bba-* bridge (app.css: WhatsApp widget, chips,
          htmx feedback, pager) — aliased, never redefined below -- */
  --bba-bg: var(--color-paper);
  --bba-surface: var(--color-paper);
  --bba-sand: var(--color-paper-2);
  --bba-green: var(--color-primary);
  --bba-green-deep: var(--color-basalt);
  --bba-ink: var(--color-ink);
  --bba-body: var(--color-ink);
  --bba-muted: var(--color-muted);
  --bba-gold: var(--color-accent);
  --bba-gold-dark: var(--color-accent-hover);
  --bba-gold-light: var(--color-basalt-muted);
  --bba-gold-tint: var(--color-accent-tint);
  --bba-sun: var(--color-accent);
  --bba-line: var(--color-rule);
  --bba-overlay: var(--color-scrim);
  --bba-shadow: var(--shadow-whisper);
  --bba-font-display: var(--font-display);
  --bba-font-body: var(--font-body);
}