/* ============================================================
   SHARED STYLESHEET — iangmyers.com
   Used by: index.html, portfolio.html, projects.html
   Edit colors in the :root and [data-theme="dark"] blocks.
   Do not edit the base reset below the token blocks.
============================================================ */

/* ── Design tokens ── */
:root, [data-theme="light"] {
  --color-bg:              #f7f4fb;
  --color-surface:         #faf8fd;
  --color-surface-2:       #ffffff;
  --color-surface-offset:  #efe9f7;
  --color-surface-dynamic: #e5daf0;
  --color-divider:         #d8cfe8;
  --color-border:          #ccc0df;
  --color-text:            #1a0028;
  --color-text-muted:      #6b5f7a;
  --color-text-faint:      #b8aec8;
  --color-text-inverse:    #f9f9f7;
  --color-primary:         #45136a;
  --color-primary-hover:   #360f52;
  --color-primary-active:  #270b3b;
  --color-primary-highlight: #e0d0f0;
  --color-accent:          #ee4a02;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 2px oklch(0.2 0.02 310 / 0.08);
  --shadow-md: 0 4px 12px oklch(0.2 0.02 310 / 0.10);
  --shadow-lg: 0 12px 32px oklch(0.2 0.02 310 / 0.14);
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1160px;
  --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);
  --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;
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body:    'Satoshi', 'Inter', sans-serif;
}

[data-theme="dark"] {
  --color-bg:              #100a18;
  --color-surface:         #170f22;
  --color-surface-2:       #1e152c;
  --color-surface-offset:  #1b1228;
  --color-surface-dynamic: #251a35;
  --color-divider:         #2e2040;
  --color-border:          #3d2e54;
  --color-text:            #ede8f5;
  --color-text-muted:      #9b8db0;
  --color-text-faint:      #5a4d6e;
  --color-text-inverse:    #100a18;
  --color-primary:         #c97af0;
  --color-primary-hover:   #b55fe0;
  --color-primary-active:  #9e44cc;
  --color-primary-highlight: #2e1a42;
  --color-accent:          #ff6a1f;
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.4);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.55);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.65);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:              #100a18;
    --color-surface:         #170f22;
    --color-surface-2:       #1e152c;
    --color-surface-offset:  #1b1228;
    --color-surface-dynamic: #251a35;
    --color-divider:         #2e2040;
    --color-border:          #3d2e54;
    --color-text:            #ede8f5;
    --color-text-muted:      #9b8db0;
    --color-text-faint:      #5a4d6e;
    --color-text-inverse:    #100a18;
    --color-primary:         #c97af0;
    --color-primary-hover:   #b55fe0;
    --color-primary-active:  #9e44cc;
    --color-primary-highlight: #2e1a42;
    --color-accent:          #ff6a1f;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.4);
    --shadow-md: 0 4px 12px oklch(0 0 0 / 0.55);
    --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.65);
  }
}

/* ── Base reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
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);
}
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; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }
::selection { background: oklch(from var(--color-primary) l c h / 0.2); 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; transition-duration: 0.01ms !important; }
}
button { cursor: pointer; background: none; border: none; }
a, button, [role="button"] {
  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; }

/* ── Layout ── */
.container { max-width: var(--content-default); margin-inline: auto; padding-inline: var(--space-6); }
.container--wide { max-width: var(--content-wide); margin-inline: auto; padding-inline: var(--space-6); }

/* ── Nav ── */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklch, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; gap: var(--space-4); }
.nav-logo { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--color-text); }
.nav-logo-mark { width: 32px; height: 32px; flex-shrink: 0; }
.nav-logo-name { font-family: var(--font-display); font-size: var(--text-sm); font-weight: 700; letter-spacing: -0.01em; }
.nav-links { display: flex; align-items: center; gap: var(--space-1); list-style: none; }
.nav-links a {
  font-size: var(--text-sm); font-weight: 500; color: var(--color-text-muted);
  text-decoration: none; padding: var(--space-2) var(--space-3); border-radius: var(--radius-md);
}
.nav-links a:hover { color: var(--color-text); background: var(--color-surface-offset); }
.nav-links a.active { color: var(--color-primary); background: var(--color-primary-highlight); }
.nav-actions { display: flex; align-items: center; gap: var(--space-2); }
.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: var(--radius-md);
  color: var(--color-text-muted); border: 1px solid transparent;
}
.theme-toggle:hover { color: var(--color-text); background: var(--color-surface-offset); border-color: var(--color-border); }
.nav-mobile-toggle {
  display: none; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: var(--radius-md); color: var(--color-text-muted);
}
.nav-mobile-toggle:hover { color: var(--color-text); background: var(--color-surface-offset); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: 600;
  padding: var(--space-3) var(--space-5); border-radius: var(--radius-md);
  text-decoration: none; border: 1px solid transparent;
  white-space: nowrap; min-height: 44px;
}
.btn-primary { background: var(--color-primary); color: var(--color-text-inverse); border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }
.btn-ghost { background: transparent; color: var(--color-text-muted); border-color: var(--color-border); }
.btn-ghost:hover { color: var(--color-text); background: var(--color-surface-offset); border-color: var(--color-text-faint); }

/* ── Section common ── */
.section { padding-block: clamp(var(--space-12), 6vw, var(--space-20)); border-bottom: 1px solid var(--color-divider); }
.section:last-of-type { border-bottom: none; }
.section-label { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-faint); margin-bottom: var(--space-6); }
.section-heading { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 800; letter-spacing: -0.025em; color: var(--color-text); margin-bottom: var(--space-3); }
.section-subheading { font-size: var(--text-base); color: var(--color-text-muted); max-width: 58ch; margin-bottom: var(--space-10); }

/* ── Tags ── */
.tag {
  font-size: var(--text-xs); font-weight: 500;
  padding: var(--space-1) var(--space-3); border-radius: var(--radius-full);
  background: var(--color-surface-offset); color: var(--color-text-muted);
  border: 1px solid oklch(from var(--color-text) l c h / 0.07);
}
.tag--primary { background: var(--color-primary-highlight); color: var(--color-primary); border-color: transparent; }

/* ── Footer ── */
.site-footer { padding-block: var(--space-8); border-top: 1px solid var(--color-divider); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; }
.footer-copy { font-size: var(--text-xs); color: var(--color-text-faint); }
.footer-links { display: flex; gap: var(--space-4); list-style: none; }
.footer-links a { font-size: var(--text-xs); color: var(--color-text-faint); text-decoration: none; }
.footer-links a:hover { color: var(--color-text-muted); }

/* ── Contact links ── */
.contact-link {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: 500; color: var(--color-text-muted);
  text-decoration: none; padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md); border: 1px solid var(--color-border);
  background: var(--color-surface); min-height: 44px;
}
.contact-link:hover { color: var(--color-text); border-color: var(--color-text-faint); background: var(--color-surface-offset); }
.contact-link svg { width: 16px; height: 16px; flex-shrink: 0; }

/* ── Cert badge images ── */
.cert-badge img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* ── Mobile ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 56px; left: 0; right: 0;
    background: var(--color-surface); border-bottom: 1px solid var(--color-divider);
    padding: var(--space-4); gap: var(--space-1); z-index: 49;
  }
  .nav-mobile-toggle { display: flex; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}