/* ============================================================
   BISMUTH.COM — Personal Site
   Design: Dark-first, bismuth crystal identity system
   Fonts: Space Grotesk (display) · DM Sans (body)
   ============================================================ */

/* ── DESIGN TOKENS ────────────────────────────────────────── */
: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);
  --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;

  /* Radii */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1.25rem;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast:  150ms var(--ease-out);
  --t-base:  220ms var(--ease-out);
  --t-slow:  400ms var(--ease-out);

  /* Fonts */
  --font-display: 'Space Grotesk', 'Helvetica Neue', sans-serif;
  --font-body:    'DM Sans', 'Helvetica Neue', sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

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

/* ── BISMUTH DARK PALETTE (default) ──────────────────────── */
:root,
[data-theme="dark"] {
  --color-bg:         #080A0F;
  --color-surface:    #0C0E15;
  --color-surface-2:  #10131C;
  --color-surface-3:  #151924;
  --color-border:     #1C2235;
  --color-border-2:   #242A40;
  --color-divider:    #141828;

  --color-text:       #DDE1EB;
  --color-text-muted: #6A7390;
  --color-text-faint: #343D52;

  /* Bismuth teal — pulled from the crystal iridescence */
  --color-primary:       #7ECEDD;
  --color-primary-hover: #A3D9E5;
  --color-primary-dim:   rgba(126, 206, 221, 0.12);

  /* Iridescent gradient — bismuth crystal signature */
  --grad-iridescent: linear-gradient(135deg,
    #7ECEDD 0%,
    #9D7EDD 38%,
    #C87EAA 65%,
    #DDB47E 100%
  );
  --grad-irid-subtle: linear-gradient(135deg,
    rgba(126,206,221,0.5) 0%,
    rgba(157,126,221,0.5) 38%,
    rgba(200,126,170,0.5) 65%,
    rgba(221,180,126,0.5) 100%
  );

  /* Crystal SVG vars */
  --crystal-stroke: rgba(126,206,221,0.6);
  --crystal-fill:   rgba(8, 10, 15, 0.85);
  --crystal-text:   #DDE1EB;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 40px rgba(126,206,221,0.08);
}

/* ── LIGHT PALETTE ────────────────────────────────────────── */
[data-theme="light"] {
  --color-bg:         #F5F6FA;
  --color-surface:    #FFFFFF;
  --color-surface-2:  #F0F1F7;
  --color-surface-3:  #EAECF3;
  --color-border:     #D8DCE8;
  --color-border-2:   #C8CDD9;
  --color-divider:    #E4E7F0;

  --color-text:       #0E1018;
  --color-text-muted: #5A6078;
  --color-text-faint: #9298A8;

  --color-primary:       #1A7D8C;
  --color-primary-hover: #145F6C;
  --color-primary-dim:   rgba(26,125,140,0.1);

  --crystal-stroke: rgba(26,125,140,0.5);
  --crystal-fill:   rgba(245,246,250,0.9);
  --crystal-text:   #0E1018;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.14);
  --shadow-glow: 0 0 40px rgba(26,125,140,0.06);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  text-size-adjust: none;
  hanging-punctuation: first last;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

img, picture, video, 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; }
button { cursor: pointer; background: none; border: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.1;
}
p, li { text-wrap: pretty; max-width: 72ch; }

a { color: inherit; text-decoration: none; }

::selection {
  background: rgba(126, 206, 221, 0.22);
  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;
    scroll-behavior: auto !important;
  }
}

/* ── LAYOUT UTILITIES ──────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

.section {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
}

/* ── BUTTONS ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.75em 1.6em;
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition:
    background var(--t-base),
    border-color var(--t-base),
    color var(--t-base),
    box-shadow var(--t-base),
    transform var(--t-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  color: #080A0F;
  border-color: var(--color-primary);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(126, 206, 221, 0.25);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border-2);
}
.btn--ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
  transform: translateY(-1px);
}

.btn--lg {
  padding: 0.9em 2em;
  font-size: var(--text-base);
}

[data-theme="light"] .btn--primary {
  color: #FFFFFF;
}

/* ── SECTION HEADERS ──────────────────────────────────────── */
.section__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.section__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  max-width: 26ch;
}

.section__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 58ch;
  line-height: 1.7;
}

.section__header {
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}

/* ══════════════════════════════════════════════════════════
   NAV
══════════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background var(--t-slow), box-shadow var(--t-slow);
}

.nav--scrolled {
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-4) clamp(var(--space-6), 5vw, var(--space-16));
  max-width: var(--content-wide);
  margin-inline: auto;
  height: 72px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity var(--t-base);
}
.nav__logo:hover { opacity: 0.75; }

.nav__bi {
  width: 36px;
  height: 42px;
  flex-shrink: 0;
}

.nav__wordmark {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-left: auto;
}

.nav__links a {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--t-fast);
  padding-block: var(--space-1);
}
.nav__links a:hover { color: var(--color-text); }

.nav__cta {
  background: var(--color-surface-2);
  border: 1.5px solid var(--color-border-2);
  padding: 0.45em 1.1em;
  border-radius: var(--radius-md);
  color: var(--color-text) !important;
  font-weight: 600 !important;
  transition: border-color var(--t-base), background var(--t-base) !important;
}
.nav__cta:hover {
  border-color: var(--color-primary) !important;
  background: var(--color-primary-dim) !important;
  color: var(--color-primary) !important;
}

/* Language switcher */
.nav__lang {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-text-faint) !important;
  background: var(--color-surface-2);
  border: 1.5px solid var(--color-border);
  padding: 0.3em 0.65em;
  border-radius: var(--radius-sm);
  transition: color var(--t-base), border-color var(--t-base), background var(--t-base);
  text-decoration: none;
  margin-left: var(--space-1);
}
.nav__lang:hover {
  color: var(--color-primary) !important;
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
}

.nav__mobile-lang {
  color: var(--color-primary) !important;
  font-weight: 600;
}

.nav__theme {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1.5px solid var(--color-border);
  transition: color var(--t-base), border-color var(--t-base), background var(--t-base);
  flex-shrink: 0;
  margin-left: var(--space-2);
}
.nav__theme:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  color: var(--color-text-muted);
  margin-left: var(--space-2);
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform var(--t-base), opacity var(--t-base);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__mobile {
  display: none;
  flex-direction: column;
  padding: var(--space-4) clamp(var(--space-6), 5vw, var(--space-16)) var(--space-6);
  background: color-mix(in oklab, var(--color-bg) 96%, transparent);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--color-border);
  gap: 0;
}

.nav__mobile-link {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-muted);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--t-fast);
}
.nav__mobile-link:last-child { border-bottom: none; }
.nav__mobile-link:hover { color: var(--color-primary); }

/* ══════════════════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* Background layers */
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

/* Circuit canvas */
.hero__circuit {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.55;
}

/* Dark gradient overlay for legibility */
.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom,
      rgba(8,10,15,0.3) 0%,
      rgba(8,10,15,0.1) 30%,
      rgba(8,10,15,0.05) 50%,
      rgba(8,10,15,0.6) 80%,
      rgba(8,10,15,0.95) 100%
    );
}

/* Technical grid overlay */
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(126,206,221,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126,206,221,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}

/* Bismuth iridescent glow orbs */
.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero__glow--1 {
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(126,206,221,0.07) 0%, transparent 70%);
  top: 20%;
  left: 10%;
  animation: glow-drift 12s ease-in-out infinite alternate;
}
.hero__glow--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(157,126,221,0.05) 0%, transparent 70%);
  top: 40%;
  right: 15%;
  animation: glow-drift 18s ease-in-out infinite alternate-reverse;
}
.hero__glow--3 {
  width: 400px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(221,180,126,0.04) 0%, transparent 70%);
  bottom: 20%;
  left: 40%;
  animation: glow-drift 15s ease-in-out infinite alternate;
}

@keyframes glow-drift {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(30px, -20px) scale(1.05); }
}

/* Content */
.hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: clamp(var(--space-24), 15vw, var(--space-32)) clamp(var(--space-6), 5vw, var(--space-16)) var(--space-24);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  background: color-mix(in oklab, var(--color-surface) 70%, transparent);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-full, 9999px);
  padding: 0.4em 1em 0.4em 0.6em;
  margin-bottom: var(--space-8);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  backdrop-filter: blur(8px);
}
.hero__badge svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.hero__headline {
  font-size: clamp(2.8rem, 1rem + 5.5vw, 6.5rem);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  max-width: 18ch;
}

.hero__gradient {
  background: var(--grad-iridescent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 50ch;
  line-height: 1.65;
  margin-bottom: var(--space-10);
  font-weight: 300;
}
.hero__sub em {
  font-style: italic;
  color: var(--color-text);
  font-weight: 400;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--color-text-faint);
  transition: color var(--t-base);
  animation: scroll-bounce 2.5s ease-in-out infinite;
}
.hero__scroll:hover { color: var(--color-primary); }

@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ══════════════════════════════════════════════════════════
   CAPABILITIES
══════════════════════════════════════════════════════════ */
.capabilities { background: var(--color-bg); }

.cap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-5);
}

.cap-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: border-color var(--t-base), box-shadow var(--t-base), transform var(--t-base);
  position: relative;
  overflow: hidden;
}

.cap-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-irid-subtle);
  opacity: 0;
  transition: opacity var(--t-slow);
  border-radius: inherit;
}

.cap-card:hover {
  border-color: var(--color-border-2);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.cap-card:hover::before { opacity: 0.035; }

.cap-card__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-dim);
  border-radius: var(--radius-lg);
  color: var(--color-primary);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.cap-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  position: relative;
  z-index: 1;
  line-height: 1.25;
}

.cap-card__body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  flex: 1;
  position: relative;
  z-index: 1;
  max-width: unset;
}

.cap-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  position: relative;
  z-index: 1;
}

.cap-card__tags li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-faint);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  padding: 0.2em 0.7em;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
  max-width: unset;
}

/* ══════════════════════════════════════════════════════════
   SELECTED WORK
══════════════════════════════════════════════════════════ */
.work { background: var(--color-surface); }

.work-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--space-5);
}

.work-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition: border-color var(--t-base), box-shadow var(--t-base), transform var(--t-base);
}
.work-card:hover {
  border-color: var(--color-border-2);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* Featured card spans full width */
.work-card--featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto;
  gap: var(--space-6) var(--space-10);
  align-items: start;
  background: var(--color-surface-3);
  border-color: var(--color-border-2);
  position: relative;
  overflow: hidden;
}
.work-card--featured::after {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(126,206,221,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.work-card__meta {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  grid-column: 1 / -1;
}
.work-card--featured .work-card__meta { grid-column: 1 / -1; }

.work-card__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 0.25em 0.75em;
  border-radius: var(--radius-sm);
  max-width: unset;
}

.work-card__tag--ai {
  background: var(--color-primary-dim);
  border-color: rgba(126,206,221,0.25);
  color: var(--color-primary);
}

.work-card__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.15;
}
.work-card:not(.work-card--featured) .work-card__title {
  font-size: var(--text-lg);
}

.work-card__body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 58ch;
}

.work-card__detail {
  display: flex;
  gap: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.work-card__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.work-card__stat-value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.work-card__stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  max-width: unset;
}

.work-card__outcome {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  line-height: 1.6;
  max-width: unset;
}
.work-card__outcome svg {
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Layout for featured card content */
.work-card--featured .work-card__title { grid-column: 1 / 2; }
.work-card--featured .work-card__body  { grid-column: 2 / 3; grid-row: 2; }
.work-card--featured .work-card__detail { grid-column: 1 / 2; }
.work-card--featured .work-card__outcome { grid-column: 1 / -1; }

/* ══════════════════════════════════════════════════════════
   MANIFESTO
══════════════════════════════════════════════════════════ */
.manifesto {
  background: var(--color-bg);
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  position: relative;
  overflow: hidden;
}

.manifesto__quote {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 0.8rem + 2vw, 2.5rem);
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-text-muted);
  max-width: 28em;
  margin-inline: auto;
  text-align: center;
  position: relative;
  z-index: 1;
  padding-inline: var(--space-4);
}
.manifesto__quote::before {
  content: '\201C';
  color: var(--color-primary);
  margin-right: 0.1em;
}
.manifesto__quote::after {
  content: '\201D';
  color: var(--color-primary);
  margin-left: 0.1em;
}

.manifesto__irid {
  position: absolute;
  inset: 0;
  background: var(--grad-iridescent);
  opacity: 0.025;
  pointer-events: none;
}

/* ══════════════════════════════════════════════════════════
   THINKING
══════════════════════════════════════════════════════════ */
.thinking { background: var(--color-surface); }

.articles-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-5);
  align-items: start;
}

a.article-card {
  text-decoration: none;
  color: inherit;
  display: block;
}

.article-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: border-color var(--t-base), box-shadow var(--t-base), transform var(--t-base);
  cursor: default;
}
.article-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-md);
  transform: translateY(-2px);
}

.article-card--featured {
  grid-row: span 1;
  background: var(--color-surface-3);
}

.article-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.article-card__cat {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-transform: uppercase;
  max-width: unset;
}

.article-card__date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  max-width: unset;
}

.article-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}
.article-card--featured .article-card__title {
  font-size: var(--text-xl);
}

.article-card__body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  flex: 1;
  max-width: unset;
}

.article-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--space-2);
  transition: gap var(--t-fast);
  max-width: unset;
}
.article-card:hover .article-card__cta { gap: var(--space-3); }

/* ══════════════════════════════════════════════════════════
   ABOUT
══════════════════════════════════════════════════════════ */
.about { background: var(--color-bg); }

.about__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: center;
}

.about__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-8);
  margin-top: var(--space-4);
}

.about__text p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-5);
  max-width: 52ch;
}
.about__text p strong {
  color: var(--color-text);
  font-weight: 600;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.about__stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.about__stat-value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.about__stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.4;
  max-width: unset;
}

.about__links {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}

.about__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  border: 1.5px solid var(--color-border-2);
  padding: 0.5em 1.1em;
  border-radius: var(--radius-md);
  transition: color var(--t-base), border-color var(--t-base), background var(--t-base);
  text-decoration: none;
}
.about__link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
}

/* Crystal illustration */
.about__crystal {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.crystal-svg {
  width: 100%;
  max-width: 420px;
  height: auto;
  animation: crystal-rotate 30s linear infinite;
  filter: drop-shadow(0 0 30px rgba(126, 206, 221, 0.12));
}

@keyframes crystal-rotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ══════════════════════════════════════════════════════════
   CONTACT
══════════════════════════════════════════════════════════ */
.contact {
  background: var(--color-surface);
  position: relative;
  overflow: hidden;
}
.contact::before {
  content: '';
  position: absolute;
  bottom: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(126,206,221,0.05) 0%, transparent 65%);
  pointer-events: none;
}

.contact__layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  align-items: start;
  gap: clamp(var(--space-10), 5vw, var(--space-16));
}

.contact__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  margin-top: var(--space-4);
}

.contact__body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 50ch;
  line-height: 1.7;
}

/* ── CONTACT FORM ─────────────────────────────────────── */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.contact-form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.contact-form__label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.contact-form__optional {
  font-weight: 400;
  color: var(--color-text-faint);
}

.contact-form__input {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-surface-2);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.7em 1em;
  transition: border-color var(--t-base), box-shadow var(--t-base), background var(--t-base);
  outline: none;
  width: 100%;
}
.contact-form__input::placeholder {
  color: var(--color-text-faint);
}
.contact-form__input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-dim);
  background: var(--color-surface-3);
}
.contact-form__input:invalid:not(:placeholder-shown):not(:focus) {
  border-color: #A12C7B;
}

.contact-form__textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

/* Honeypot — visually hidden but accessible to bots */
.contact-form__hp {
  position: absolute;
  left: -9999px;
  top: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
  pointer-events: none;
}

.contact-form__submit {
  align-self: flex-start;
  margin-top: var(--space-2);
}
.contact-form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.contact-form__status {
  font-size: var(--text-sm);
  line-height: 1.5;
  min-height: 1.5em;
  max-width: unset;
}
.contact-form__status--success {
  color: #6DAA45;
}
.contact-form__status--error {
  color: #D163A7;
}

/* Spinner inside submit button */
.contact-form__spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: cf-spin 0.6s linear infinite;
}
@keyframes cf-spin {
  to { transform: rotate(360deg); }
}

/* ══════════════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════════════ */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-12);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.footer__logo {
  color: var(--color-text-faint);
  transition: color var(--t-base);
}
.footer__logo:hover { color: var(--color-primary); }

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}
.footer__nav a {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  transition: color var(--t-fast);
}
.footer__nav a:hover { color: var(--color-text-muted); }

.footer__copy {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: unset;
}

/* ══════════════════════════════════════════════════════════
   SCROLL ANIMATIONS
══════════════════════════════════════════════════════════ */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.fade-up.visible {
  opacity: 1;
  transform: none;
}

/* Stagger delay utility classes */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ══════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .work-card--featured {
    grid-template-columns: 1fr;
  }
  .work-card--featured .work-card__title,
  .work-card--featured .work-card__body,
  .work-card--featured .work-card__detail,
  .work-card--featured .work-card__outcome {
    grid-column: 1;
  }

  .articles-grid {
    grid-template-columns: 1fr 1fr;
  }
  .article-card--featured {
    grid-column: 1 / -1;
  }

  .contact__layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__theme { display: none; }
  .nav__hamburger { display: flex; }

  .nav__mobile.open {
    display: flex;
  }

  .hero__headline {
    font-size: clamp(2.4rem, 10vw, 4rem);
  }

  .work-grid {
    grid-template-columns: 1fr;
  }
  .work-card--featured {
    grid-column: 1;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }
  .article-card--featured {
    grid-column: 1;
  }

  .about__layout {
    grid-template-columns: 1fr;
  }
  .about__visual {
    order: -1;
    max-width: 280px;
    margin-inline: auto;
  }

  .about__stats {
    grid-template-columns: 1fr 1fr;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .cap-grid {
    grid-template-columns: 1fr;
  }
  .hero__actions {
    flex-direction: column;
  }
  .hero__actions .btn {
    width: 100%;
    justify-content: center;
  }
  .about__stats {
    grid-template-columns: 1fr;
  }
  .contact-form__submit {
    width: 100%;
    justify-content: center;
  }
}

/* ── LIGHT MODE ADJUSTMENTS ─────────────────────────────── */
[data-theme="light"] .hero__circuit {
  opacity: 0.18;
}
[data-theme="light"] .hero__bg::after {
  background: linear-gradient(to bottom,
    rgba(245,246,250,0.4) 0%,
    rgba(245,246,250,0.2) 30%,
    rgba(245,246,250,0.1) 50%,
    rgba(245,246,250,0.7) 80%,
    rgba(245,246,250,0.97) 100%
  );
}
[data-theme="light"] .hero__gradient {
  background: linear-gradient(135deg, #1A7D8C 0%, #5C3D9E 40%, #8C3D65 70%, #8C600A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
[data-theme="light"] .manifesto__quote::before,
[data-theme="light"] .manifesto__quote::after {
  color: var(--color-primary);
}