/* ============================================================
   BASE.CSS — Oahu Jump Design System
   Palette: Tropical Ocean Blue + Warm Sunset Orange + White
   ============================================================ */

:root, [data-theme="light"] {
  /* --- Type Scale (fluid) --- */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* --- Spacing (4px base) --- */
  --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;
  --space-24: 6rem;
  --space-32: 8rem;

  /* --- Oahu Jump Color Palette --- */
  /* Ocean Blue (primary) */
  --color-primary:           #0077B6;
  --color-primary-hover:     #005F8E;
  --color-primary-active:    #004A70;
  --color-primary-highlight: #CAE5F3;
  --color-primary-light:     #E0F4FE;

  /* Sunset Orange (accent / CTA) */
  --color-accent:            #F77F00;
  --color-accent-hover:      #D46B00;
  --color-accent-active:     #B05700;
  --color-accent-highlight:  #FDE9C8;

  /* Surfaces */
  --color-bg:             #FFFFFF;
  --color-surface:        #F8FBFF;
  --color-surface-2:      #EEF7FF;
  --color-surface-offset: #E0F0FA;
  --color-divider:        #C7DFF0;
  --color-border:         #B0CCE0;

  /* Text */
  --color-text:           #0B1C2C;
  --color-text-muted:     #4A6478;
  --color-text-faint:     #8EAABF;
  --color-text-inverse:   #FFFFFF;

  /* Semantic */
  --color-success:        #15803D;
  --color-success-light:  #DCFCE7;
  --color-error:          #C0392B;
  --color-error-light:    #FEE2E2;
  --color-warning:        #D97706;
  --color-warning-light:  #FEF3C7;

  /* --- Radii --- */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-sm: 0 1px 3px rgba(0,119,182,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,119,182,0.12), 0 2px 6px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,119,182,0.15), 0 4px 12px rgba(0,0,0,0.08);
  --shadow-card: 0 2px 8px rgba(0,119,182,0.1);

  /* --- Transitions --- */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* --- Content widths --- */
  --content-narrow:  640px;
  --content-default: 960px;
  --content-wide:    1240px;

  /* --- Fonts --- */
  --font-display: 'Plus Jakarta Sans', 'Helvetica Neue', sans-serif;
  --font-body:    'Plus Jakarta Sans', 'Helvetica Neue', sans-serif;
}

/* Dark mode */
[data-theme="dark"] {
  --color-bg:             #0A1929;
  --color-surface:        #0D2137;
  --color-surface-2:      #112845;
  --color-surface-offset: #163255;
  --color-divider:        #1E3A5F;
  --color-border:         #274D78;
  --color-text:           #D6EAF8;
  --color-text-muted:     #8EAABF;
  --color-text-faint:     #4A6478;
  --color-text-inverse:   #0A1929;
  --color-primary:        #48B0DC;
  --color-primary-hover:  #30A3D4;
  --color-primary-active: #1895C9;
  --color-primary-highlight: #1A3D5C;
  --color-primary-light:  #0F2A42;
  --color-accent:         #FFA033;
  --color-accent-hover:   #FF8C00;
  --color-accent-highlight: #3D2500;
  --color-surface-offset: #163250;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  --shadow-card: 0 2px 8px rgba(0,0,0,0.3);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #0A1929;
    --color-surface:        #0D2137;
    --color-surface-2:      #112845;
    --color-surface-offset: #163255;
    --color-divider:        #1E3A5F;
    --color-border:         #274D78;
    --color-text:           #D6EAF8;
    --color-text-muted:     #8EAABF;
    --color-text-faint:     #4A6478;
    --color-text-inverse:   #0A1929;
    --color-primary:        #48B0DC;
    --color-primary-hover:  #30A3D4;
    --color-primary-highlight: #1A3D5C;
    --color-primary-light:  #0F2A42;
    --color-accent:         #FFA033;
    --color-accent-hover:   #FF8C00;
    --shadow-card: 0 2px 8px rgba(0,0,0,0.3);
  }
}

/* ============================================================
   RESET + BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body, sans-serif);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; font-family: var(--font-display); }
p, li, figcaption { text-wrap: pretty; }
button { cursor: pointer; background: none; border: none; }
table { border-collapse: collapse; width: 100%; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--color-primary-highlight); color: var(--color-text); }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

a, button, [role="button"], input, textarea, select {
  transition: color var(--transition-interactive),
              background var(--transition-interactive),
              border-color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}

.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;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}