/* PartDCoach.com — Base Stylesheet */
/* Brand: Deep Navy primary, Teal accent, Warm cream surfaces */
/* Sister to 40 Quarter Coach — same authority DNA, more modern/tool-like */

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

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
  scroll-padding-top: 5rem;
}

/* ─── TYPE SCALE ─── */
:root {
  --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 ─── */
:root {
  --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;
}

/* ─── BRAND PALETTE — LIGHT MODE ─── */
:root,
[data-theme='light'] {
  /* Surfaces — warm cream, medical-trustworthy white */
  --color-bg:              #F8F7F4;
  --color-surface:         #FDFCFA;
  --color-surface-2:       #FFFFFF;
  --color-surface-offset:  #F2EFE9;
  --color-surface-offset-2:#EAE6DF;
  --color-surface-dynamic: #E2DDD5;
  --color-divider:         #D8D3CB;
  --color-border:          #CCC6BC;

  /* Text */
  --color-text:         #0F1923;
  --color-text-muted:   #6B6860;
  --color-text-faint:   #B0ADA6;
  --color-text-inverse: #F8F7F4;

  /* Primary accent — teal (PartDCoach brand) */
  --color-primary:          #1B7A6F;
  --color-primary-hover:    #155E56;
  --color-primary-active:   #0F443E;
  --color-primary-highlight:#C8E4E2;

  /* Navy — deep trust color, headings, hero bg */
  --color-navy:         #0A1628;
  --color-navy-mid:     #162540;
  --color-navy-light:   #1E3355;

  /* Gold accent — warmth, premium, CTAs */
  --color-gold:         #C8973E;
  --color-gold-hover:   #A87B30;
  --color-gold-active:  #8A6225;
  --color-gold-highlight:#F2E6CE;

  /* Success */
  --color-success:      #2E7D32;
  --color-success-bg:   #E8F5E9;

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

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow:        320ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(10, 22, 40, 0.08);
  --shadow-md:  0 4px 16px rgba(10, 22, 40, 0.10);
  --shadow-lg:  0 12px 40px rgba(10, 22, 40, 0.14);
  --shadow-xl:  0 24px 64px rgba(10, 22, 40, 0.18);

  /* Content widths */
  --content-narrow:  640px;
  --content-default: 960px;
  --content-wide:    1200px;

  /* Fonts */
  --font-display: 'Playfair Display', 'Georgia', serif;
  --font-body:    'DM Sans', 'Helvetica Neue', sans-serif;
}

/* ─── DARK MODE ─── */
[data-theme='dark'],
@media (prefers-color-scheme: dark) { :root:not([data-theme]) {
  --color-bg:               #0D1117;
  --color-surface:          #131A24;
  --color-surface-2:        #192231;
  --color-surface-offset:   #1A2534;
  --color-surface-offset-2: #1F2D3F;
  --color-surface-dynamic:  #253347;
  --color-divider:          #2C3D52;
  --color-border:           #374D66;
  --color-text:             #E8E6E1;
  --color-text-muted:       #8E9BAB;
  --color-text-faint:       #4E6070;
  --color-text-inverse:     #0D1117;
  --color-primary:          #3DB5AA;
  --color-primary-hover:    #2D9D93;
  --color-primary-active:   #1E847A;
  --color-primary-highlight:#1B3D3A;
  --color-navy:             #C5D4E8;
  --color-navy-mid:         #8CA7C8;
  --color-navy-light:       #5C80A8;
  --color-gold:             #E4B062;
  --color-gold-hover:       #D09A4A;
  --color-gold-active:      #B88035;
  --color-gold-highlight:   #3D2E1A;
  --color-success:          #4CAF50;
  --color-success-bg:       #1B3820;
  --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-xl:  0 24px 64px rgba(0,0,0,0.6);
}}

[data-theme='dark'] {
  --color-bg:               #0D1117;
  --color-surface:          #131A24;
  --color-surface-2:        #192231;
  --color-surface-offset:   #1A2534;
  --color-surface-offset-2: #1F2D3F;
  --color-surface-dynamic:  #253347;
  --color-divider:          #2C3D52;
  --color-border:           #374D66;
  --color-text:             #E8E6E1;
  --color-text-muted:       #8E9BAB;
  --color-text-faint:       #4E6070;
  --color-text-inverse:     #0D1117;
  --color-primary:          #3DB5AA;
  --color-primary-hover:    #2D9D93;
  --color-primary-active:   #1E847A;
  --color-primary-highlight:#1B3D3A;
  --color-navy:             #C5D4E8;
  --color-navy-mid:         #8CA7C8;
  --color-navy-light:       #5C80A8;
  --color-gold:             #E4B062;
  --color-gold-hover:       #D09A4A;
  --color-gold-active:      #B88035;
  --color-gold-highlight:   #3D2E1A;
  --color-success:          #4CAF50;
  --color-success-bg:       #1B3820;
  --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-xl:  0 24px 64px rgba(0,0,0,0.6);
}

/* ─── BASE RESETS ─── */
body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

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;
  max-width: 72ch;
}

::selection {
  background: color-mix(in oklab, var(--color-primary) 25%, transparent);
  color: var(--color-text);
}

: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; }
table  { border-collapse: collapse; width: 100%; }

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),
    opacity 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;
}