/* ===========================
   BASE STYLESHEET — JDSL
   =========================== */

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

:root {
  /* Type Scale */
  --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);

  /* 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;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Colors — JDSL Custom: Clean White + Teal */
  --color-bg:           #FFFFFF;
  --color-surface:      #F5F9F9;
  --color-surface-2:    #EBF4F4;
  --color-border:       #D0E4E5;
  --color-divider:      #E2EEEE;

  --color-text:         #0F2020;
  --color-text-muted:   #4A6366;
  --color-text-faint:   #90ABAD;
  --color-text-inverse: #FFFFFF;

  --color-primary:       #007B82;
  --color-primary-hover: #005F66;
  --color-primary-active:#004A50;
  --color-primary-light: #E0F2F3;
  --color-primary-mid:   #B2DEE0;

  --color-navy:         #0F2839;
  --color-navy-hover:   #1A3A52;

  --color-success:      #1B7A40;
  --color-warning:      #B45309;
  --color-error:        #991B1B;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,30,35,0.08);
  --shadow-md:  0 4px 14px rgba(0,30,35,0.10);
  --shadow-lg:  0 12px 36px rgba(0,30,35,0.14);
  --shadow-xl:  0 24px 56px rgba(0,30,35,0.16);

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

  /* Content widths */
  --content-narrow:  680px;
  --content-default: 1000px;
  --content-wide:    1240px;

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

/* Dark mode */
[data-theme="dark"] {
  --color-bg:           #0A1A1C;
  --color-surface:      #0F2224;
  --color-surface-2:    #142B2D;
  --color-border:       #1E3A3D;
  --color-divider:      #193032;
  --color-text:         #D4EBEC;
  --color-text-muted:   #7AABAE;
  --color-text-faint:   #3D6B6E;
  --color-text-inverse: #0A1A1C;
  --color-primary:       #2DB4BC;
  --color-primary-hover: #4CC4CC;
  --color-primary-active:#62D0D8;
  --color-primary-light: #0F2E30;
  --color-primary-mid:   #1A4245;
  --color-navy:          #D4EBEC;
  --color-navy-hover:    #B2D8DA;
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 14px rgba(0,0,0,0.4);
  --shadow-lg:  0 12px 36px rgba(0,0,0,0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:           #0A1A1C;
    --color-surface:      #0F2224;
    --color-surface-2:    #142B2D;
    --color-border:       #1E3A3D;
    --color-divider:      #193032;
    --color-text:         #D4EBEC;
    --color-text-muted:   #7AABAE;
    --color-text-faint:   #3D6B6E;
    --color-text-inverse: #0A1A1C;
    --color-primary:       #2DB4BC;
    --color-primary-hover: #4CC4CC;
    --color-primary-light: #0F2E30;
    --color-primary-mid:   #1A4245;
    --color-navy:          #D4EBEC;
  }
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

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

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 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.15;
  color: var(--color-text);
}

p, li, figcaption {
  text-wrap: pretty;
  max-width: 72ch;
}

::selection {
  background: var(--color-primary-light);
  color: var(--color-primary-hover);
}

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

@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;
  }
}

button { cursor: pointer; background: none; border: none; }
a { color: inherit; text-decoration: none; }

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

.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;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-12));
}
.container--narrow {
  max-width: var(--content-default);
}

section {
  padding-block: clamp(var(--space-12), 7vw, var(--space-24));
}