/* ==========================================================================
   INSTRUCTIONAL DESIGN PORTFOLIO — STYLES
   ==========================================================================
   BUILD STAGE 1: Design tokens, Nav, Hero, Impact Dashboard, About, Footer
   Stage 2 will add: Work gallery, Case studies, Process, Scenario demo
   Stage 3 will add: Skills, Behind the scenes, AI workflow, Testimonials,
                      Resume, Contact
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS
   -------------------------------------------------------------------------- */
:root {
  /* Color — near-black violet base with a bright indigo/violet primary
     accent and a punchy orange secondary accent (gold used only as a
     rare tertiary highlight) */
  --color-bg: #0b0714;
  --color-bg-rgb: 11, 7, 20;
  --color-surface: #150e22;
  --color-surface-raised: #1d1430;
  --color-border: #3a2a58;
  --color-border-soft: #251a3a;

  --color-text: #f4f1fa;
  --color-text-muted: #a99cc0;
  --color-text-faint: #6f6288;

  --color-accent: #7c4dff;
  --color-accent-dim: #6435e0;
  --color-accent-soft: rgba(124, 77, 255, 0.16);
  --color-accent-glow: rgba(124, 77, 255, 0.4);

  --color-orange: #ff5a1f;
  --color-orange-dim: #e04a15;
  --color-orange-soft: rgba(255, 90, 31, 0.15);

  --color-gold: #e6b84f;
  --color-gold-soft: rgba(230, 184, 79, 0.14);

  --color-focus: #c4aeff;

  /* Typography */
  --font-display: "Fraunces", "Georgia", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --fs-hero: clamp(2.75rem, 6vw, 5.5rem);
  --fs-h1: clamp(2.25rem, 4.5vw, 3.75rem);
  --fs-h2: clamp(1.75rem, 3vw, 2.5rem);
  --fs-h3: clamp(1.25rem, 2vw, 1.5rem);
  --fs-body-lg: clamp(1.1rem, 1.4vw, 1.25rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-micro: 0.75rem;

  /* Spacing scale */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;

  --content-max: 1280px;
  --content-narrow: 760px;

  /* Borders & radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --border-hairline: 1px solid var(--color-border-soft);

  /* Shadow */
  --shadow-soft: 0 20px 60px -20px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px var(--color-accent-glow);

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 180ms;
  --duration-base: 400ms;
  --duration-slow: 800ms;
}

/* Light theme override (toggled via [data-theme="light"] on <html>) */
[data-theme="light"] {
  --color-bg: #faf5ed;
  --color-bg-rgb: 250, 245, 237;
  --color-surface: #ffffff;
  --color-surface-raised: #f3e8f0;
  --color-border: #e3cfe0;
  --color-border-soft: #eee0ea;

  --color-text: #241a2c;
  --color-text-muted: #6e5a72;
  --color-text-faint: #9c8a9e;

  --color-accent: #e05b1f;
  --color-accent-dim: #b8480f;
  --color-accent-soft: rgba(224, 91, 31, 0.1);
  --color-accent-glow: rgba(224, 91, 31, 0.25);

  --color-gold: #b8892a;
  --color-gold-soft: rgba(184, 137, 42, 0.12);

  --shadow-soft: 0 20px 60px -20px rgba(20, 20, 20, 0.15);
}

/* --------------------------------------------------------------------------
   2. RESET & BASE
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background-color: #0b0714;
  color-scheme: dark;
  min-height: 100%;
}

[data-theme="light"] {
  color-scheme: light;
}

[data-theme="light"] html {
  background-color: #faf5ed;
}

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

body {
  margin: 0;
  min-height: 100%;
  background-color: #0b0714;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--duration-base) var(--ease-out),
    color var(--duration-base) var(--ease-out);
}

[data-theme="light"] body {
  background-color: #faf5ed;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  margin: 0;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* Ensure the native [hidden] attribute always wins, even on elements like
   .btn that set their own `display` — without this, JS-driven hidden=true
   toggling on buttons/links can silently fail to actually hide them. */
[hidden] {
  display: none !important;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-sm);
  background: var(--color-accent);
  color: #06231b;
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--fs-small);
  z-index: 1000;
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-sm);
}

/* Focus states — visible everywhere, never suppressed */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   3. LAYOUT UTILITIES
   -------------------------------------------------------------------------- */
.wrap {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.section {
  padding-block: var(--space-3xl);
  position: relative;
}

.section-header {
  max-width: var(--content-narrow);
  margin-bottom: var(--space-xl);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
  border: 1px solid var(--color-accent);
  background: var(--color-accent-soft);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
}

.section-title {
  font-size: var(--fs-h1);
  margin-bottom: var(--space-sm);
}

.section-lede {
  font-size: var(--fs-body-lg);
  color: var(--color-text-muted);
  max-width: 56ch;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-sm);
  font-size: var(--fs-small);
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #06231b;
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--color-accent-dim);
}

.btn-ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

/* Reveal-on-scroll utility */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* --------------------------------------------------------------------------
   4. NAVIGATION
   -------------------------------------------------------------------------- */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  z-index: 600;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-orange));
  transition: width 80ms linear;
}

@media (prefers-reduced-motion: reduce) {
  .progress-bar-fill {
    transition: none;
  }
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  padding: var(--space-sm) 0;
  transition: background var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    backdrop-filter var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
}

.site-nav.is-scrolled {
  background-color: rgba(11, 7, 20, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--color-border-soft);
}

[data-theme="light"] .site-nav.is-scrolled {
  background-color: rgba(250, 245, 237, 0.9);
}

.site-nav.is-hidden {
  transform: translateY(-100%);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.nav-logo span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links a {
  text-decoration: none;
  font-size: var(--fs-small);
  color: var(--color-text-muted);
  position: relative;
  padding: 0.3rem 0.1rem;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--color-text);
}

.nav-links a.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  color: var(--color-text);
  transition: border-color var(--duration-fast) var(--ease-out);
}

.theme-toggle:hover {
  border-color: var(--color-accent);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: block; }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

.nav-toggle-bars {
  position: relative;
  width: 18px;
  height: 12px;
}

.nav-toggle-bars span {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--duration-fast) var(--ease-out),
    opacity var(--duration-fast) var(--ease-out);
}

.nav-toggle-bars span:nth-child(1) { top: 0; }
.nav-toggle-bars span:nth-child(2) { top: 5px; }
.nav-toggle-bars span:nth-child(3) { top: 10px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    inset: 0 0 0 30%;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: var(--space-lg);
    background: var(--color-surface);
    padding: var(--space-xl) var(--space-xl);
    transform: translateX(100%);
    transition: transform var(--duration-base) var(--ease-out);
    border-left: var(--border-hairline);
  }

  .nav-links.is-open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: var(--fs-h3);
    color: var(--color-text);
  }

  .nav-toggle {
    display: inline-flex;
  }
}

/* --------------------------------------------------------------------------
   5. HERO / OPENING EXPERIENCE
   -------------------------------------------------------------------------- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 6rem;
  padding-bottom: 4rem;
  background-color: #0b0714;
  background-image:
    linear-gradient(var(--color-border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: center top;
  animation: heroGridDrift 40s linear infinite;
}

[data-theme="light"] .hero {
  background-color: #faf5ed;
}

@keyframes heroGridDrift {
  from { background-position: 0 0; }
  to { background-position: 64px 128px; }
}

.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 90%;
  background:
    radial-gradient(55% 55% at 22% 15%, var(--color-accent-soft), transparent 70%),
    radial-gradient(45% 45% at 85% 30%, var(--color-orange-soft), transparent 70%);
  pointer-events: none;
  animation: heroGlowDrift 16s ease-in-out infinite alternate;
  transform-origin: center;
}

@keyframes heroGlowDrift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(-3%, 4%) scale(1.08); }
}

@media (prefers-reduced-motion: reduce) {
  .hero,
  .hero::before {
    animation: none;
  }
}

.hero-inner {
  position: relative;
  z-index: 1;
  min-height: 8em;
}

.hero-line {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  line-height: 1.08;
  max-width: 15ch;
  opacity: 0;
  transform: translateY(18px);
  position: absolute;
  top: 0;
  left: 0;
  transition: opacity 900ms var(--ease-out), transform 900ms var(--ease-out);
}

.hero-line.is-active {
  position: relative;
  opacity: 1;
  transform: translateY(0);
}

.hero-line .accent {
  color: var(--color-accent);
}

.hero-final {
  position: relative;
}

.hero-final {
  position: relative;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
}

.hero-final.is-active {
  opacity: 1;
  transform: translateY(0);
}

.hero-badge {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 500ms var(--ease-out), transform 500ms var(--ease-out);
}

.hero-final.is-active .hero-badge {
  opacity: 1;
  transform: translateY(0);
}

.hero-title {
  font-size: clamp(3.5rem, 10vw, 7.5rem);
  font-weight: 700;
  max-width: 16ch;
}

.hero-name-text {
  white-space: pre-wrap;
}

.hero-cursor {
  display: inline-block;
  width: 0.06em;
  height: 0.85em;
  margin-left: 0.06em;
  background: var(--color-orange);
  vertical-align: -0.05em;
  opacity: 0;
}

.hero-cursor.is-typing {
  opacity: 1;
  animation: caretBlink 900ms steps(1) infinite;
}

.hero-cursor.is-done {
  animation: caretBlink 900ms steps(1) infinite;
  opacity: 1;
  transition: opacity 600ms var(--ease-out) 1200ms;
}

.hero-cursor.is-fading {
  opacity: 0 !important;
  animation: none;
}

@keyframes caretBlink {
  50% { opacity: 0; }
}

.hero-tagline {
  margin-top: var(--space-sm);
  font-size: var(--fs-h3);
  font-weight: 600;
  color: var(--color-accent);
  max-width: 34ch;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}

.hero-final.is-active .hero-tagline {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 900ms;
}

.hero-sub {
  margin-top: var(--space-md);
  font-size: var(--fs-body-lg);
  color: var(--color-text-muted);
  max-width: 46ch;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}

.hero-final.is-active .hero-sub {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 1150ms;
}

.hero-actions {
  margin-top: var(--space-lg);
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}

.hero-final.is-active .hero-actions {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 1350ms;
}

@media (prefers-reduced-motion: reduce) {
  .hero-line { position: relative; opacity: 1; transform: none; }
  .hero-final,
  .hero-badge,
  .hero-tagline,
  .hero-sub,
  .hero-actions {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-cursor {
    display: none;
  }
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-lg);
  left: clamp(1.25rem, 5vw, 3rem);
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--color-text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scroll-indicator .line {
  width: 1px;
  height: 32px;
  background: linear-gradient(var(--color-text-faint), transparent);
  animation: scrollPulse 2.4s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-indicator .line { animation: none; opacity: 0.6; }
}

/* --------------------------------------------------------------------------
   6. IMPACT DASHBOARD
   -------------------------------------------------------------------------- */
.dashboard {
  padding-block: var(--space-3xl);
  border-top: var(--border-hairline);
  border-bottom: var(--border-hairline);
  background: linear-gradient(180deg, var(--color-surface), var(--color-bg));
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.metric {
  border-left: 2px solid var(--color-border);
  padding-left: var(--space-sm);
  transition: border-color var(--duration-base) var(--ease-out);
}

.metric.is-visible {
  border-color: var(--color-accent);
}

.metric-number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  color: var(--color-orange);
  display: flex;
  align-items: baseline;
  gap: 0.15rem;
}

.metric-number .suffix {
  color: var(--color-orange);
}

.metric-label {
  margin-top: var(--space-2xs);
  font-size: var(--fs-small);
  color: var(--color-text-muted);
  max-width: 32ch;
}

.dashboard-note {
  font-size: var(--fs-small);
  color: var(--color-text-faint);
  max-width: 60ch;
}

/* --------------------------------------------------------------------------
   7. ABOUT
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(240px, 340px) 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.about-photo {
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(155deg, var(--color-surface-raised), var(--color-surface));
  border: var(--border-hairline);
  position: sticky;
  top: 6.5rem;
  box-shadow: var(--shadow-soft);
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  display: block;
}

.about-bio p {
  font-size: var(--fs-body-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  max-width: 62ch;
}

.about-bio p:first-of-type {
  color: var(--color-text);
}

.principles-title {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: var(--space-xl) 0 var(--space-sm);
}

.principles-list {
  display: grid;
  gap: var(--space-2xs);
}

.principles-list li {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-top: var(--border-hairline);
  font-size: var(--fs-body);
  color: var(--color-text);
}

.principles-list li::before {
  content: "";
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  margin-top: 0.55em;
  border-radius: 50%;
  background: var(--color-accent);
}

.timeline {
  margin-top: var(--space-xl);
  display: grid;
  gap: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-top: var(--border-hairline);
}

.timeline-year {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--color-accent);
}

.timeline-role {
  font-size: var(--fs-body-lg);
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.timeline-desc {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.timeline-org {
  display: inline;
  font-size: var(--fs-body);
  font-weight: 700;
  color: var(--color-text);
}

.timeline-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  margin-left: 0.5rem;
  vertical-align: middle;
}

.timeline-cert {
  margin-top: var(--space-lg);
  font-size: var(--fs-small);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.timeline-cert::before {
  content: "◆ ";
  color: var(--color-orange);
}

@media (max-width: 860px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-photo {
    position: static;
    max-width: 280px;
  }
}

/* --------------------------------------------------------------------------
   8. FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  border-top: var(--border-hairline);
  padding-block: var(--space-xl);
}

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

.footer-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.footer-meta {
  font-size: var(--fs-small);
  color: var(--color-text-faint);
}

.footer-links {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-links a {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.back-to-top {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--color-text);
  transition: border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.back-to-top:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   9. STAGE PLACEHOLDER (removed as later stages are built)
   -------------------------------------------------------------------------- */
.stage-placeholder {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
}

/* --------------------------------------------------------------------------
   10. FEATURED WORK — filters + gallery
   -------------------------------------------------------------------------- */
.work-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  margin-bottom: var(--space-xl);
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  font-size: var(--fs-small);
  font-family: var(--font-mono);
  transition: border-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out);
}

.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

.filter-btn[aria-pressed="true"] {
  background: var(--color-accent-soft);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.project-card {
  background: var(--color-surface);
  border: var(--border-hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border);
  box-shadow: var(--shadow-soft);
}

.project-card[hidden] {
  display: none;
}

.thumb-placeholder {
  aspect-ratio: 16 / 10;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: var(--space-sm);
  overflow: hidden;
  background:
    radial-gradient(120% 140% at 0% 0%, var(--thumb-a, var(--color-accent-soft)), transparent 55%),
    radial-gradient(120% 140% at 100% 100%, var(--thumb-b, var(--color-orange-soft)), transparent 55%),
    var(--color-surface-raised);
}

.thumb-placeholder.has-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.thumb-placeholder.has-image::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 7, 20, 0) 40%, rgba(11, 7, 20, 0.85) 100%);
  z-index: 1;
}

.thumb-placeholder.has-image::after {
  position: relative;
  z-index: 2;
}

.thumb-placeholder::after {
  content: attr(data-tag);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  background: rgba(0, 0, 0, 0.25);
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-soft);
}

.project-card:hover .thumb-placeholder::after {
  color: var(--color-text-muted);
}

.project-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  flex-grow: 1;
}

.project-category {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.project-title {
  font-size: var(--fs-h3);
}

.project-challenge {
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  margin: var(--space-2xs) 0 var(--space-sm);
  flex-grow: 1;
}

.project-meta {
  display: grid;
  gap: 0.3rem;
  font-size: var(--fs-small);
  color: var(--color-text-faint);
  margin-bottom: var(--space-sm);
}

.project-meta strong {
  color: var(--color-text-muted);
  font-weight: 500;
}

.project-card .btn {
  align-self: flex-start;
}

/* --------------------------------------------------------------------------
   11. CASE STUDY MODAL
   -------------------------------------------------------------------------- */
.case-study-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 6, 4, 0.72);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: clamp(1rem, 4vw, 4rem) clamp(1rem, 4vw, 2rem);
  overflow-y: auto;
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out);
}

.case-study-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.case-study {
  background: var(--color-surface);
  border: var(--border-hairline);
  border-radius: var(--radius-lg);
  max-width: 880px;
  width: 100%;
  padding: clamp(1.5rem, 4vw, 3rem);
  position: relative;
  transform: translateY(24px);
  transition: transform var(--duration-base) var(--ease-out);
}

.case-study-overlay.is-open .case-study {
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .case-study-overlay, .case-study { transition: none; }
}

.case-study-close {
  position: absolute;
  top: clamp(1rem, 3vw, 1.75rem);
  right: clamp(1rem, 3vw, 1.75rem);
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  color: var(--color-text);
}

.case-study-close:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.case-study-hero {
  aspect-ratio: 21 / 9;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-lg);
  background: var(--color-surface-raised);
}

.case-study-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.case-study-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2xs);
}

.case-study-title {
  font-size: var(--fs-h2);
  max-width: 22ch;
  margin-bottom: var(--space-lg);
}

.pathway {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  position: relative;
}

.pathway::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 6%;
  right: 6%;
  height: 1px;
  background: var(--color-border);
  z-index: 0;
}

.pathway-step {
  position: relative;
  z-index: 1;
  text-align: center;
}

.pathway-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-accent);
  color: var(--color-accent);
  display: grid;
  place-items: center;
  margin: 0 auto var(--space-2xs);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
}

.pathway-label {
  font-size: var(--fs-micro);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.case-study-grid {
  display: grid;
  gap: var(--space-lg);
}

.case-study-block h3 {
  font-size: var(--fs-h3);
  margin-bottom: var(--space-2xs);
  color: var(--color-text);
}

.case-study-block p,
.case-study-block li {
  color: var(--color-text-muted);
  font-size: var(--fs-body);
}

.case-study-block ul {
  display: grid;
  gap: 0.35rem;
}

.case-study-block li::before {
  content: "— ";
  color: var(--color-accent);
}

.case-study-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tool-chip {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  color: var(--color-text-muted);
}

.case-study-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xs);
}

.case-study-gallery .thumb-placeholder {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
}

.case-study-gallery .thumb-placeholder::after {
  font-size: 0.65rem;
}

.case-study-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  padding-top: var(--space-sm);
  border-top: var(--border-hairline);
}

.case-study-actions [hidden] {
  display: none;
}

.case-study-note {
  font-size: var(--fs-small);
  color: var(--color-text-faint);
  font-style: italic;
}

@media (max-width: 620px) {
  .pathway { grid-template-columns: repeat(2, 1fr); row-gap: var(--space-md); }
  .pathway::before { display: none; }
  .case-study-gallery { grid-template-columns: repeat(2, 1fr); }
}

/* --------------------------------------------------------------------------
   12. DESIGN PROCESS — interactive stage explorer
   -------------------------------------------------------------------------- */
.process-layout {
  display: grid;
  grid-template-columns: minmax(200px, 260px) 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.process-tabs {
  display: flex;
  flex-direction: column;
  border-left: 2px solid var(--color-border);
}

.process-tab {
  background: transparent;
  border: none;
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

.process-tab .num {
  color: var(--color-text-faint);
}

.process-tab:hover {
  color: var(--color-text);
}

.process-tab[aria-selected="true"] {
  color: var(--color-text);
  border-color: var(--color-accent);
}

.process-tab[aria-selected="true"] .num {
  color: var(--color-accent);
}

.process-panel {
  background: var(--color-surface);
  border: var(--border-hairline);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  min-height: 260px;
}

.process-panel[hidden] { display: none; }

.process-panel-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2xs);
}

.process-panel h3 {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-sm);
}

.process-panel p {
  color: var(--color-text-muted);
  font-size: var(--fs-body-lg);
  max-width: 58ch;
  margin-bottom: var(--space-md);
}

.process-deliverable {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--color-text-faint);
  border-top: var(--border-hairline);
  padding-top: var(--space-sm);
}

.process-deliverable strong {
  color: var(--color-text-muted);
  font-weight: 500;
}

@media (max-width: 760px) {
  .process-layout { grid-template-columns: 1fr; }
  .process-tabs {
    flex-direction: row;
    flex-wrap: wrap;
    border-left: none;
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--space-xs);
  }
  .process-tab {
    border-left: none;
    border-bottom: 2px solid transparent;
    margin-left: 0;
    padding: var(--space-2xs) var(--space-sm);
  }
  .process-tab[aria-selected="true"] { border-color: var(--color-accent); }
}

/* --------------------------------------------------------------------------
   13. SCENARIO DESIGN DEMONSTRATION
   -------------------------------------------------------------------------- */
.scenario-card {
  background: var(--color-surface);
  border: var(--border-hairline);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 3rem);
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
  max-width: var(--content-narrow);
  margin: 0 auto;
}

.scenario-message {
  background: var(--color-surface-raised);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  border-left: 3px solid var(--color-orange);
}

.scenario-message-label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-orange);
  margin-bottom: var(--space-2xs);
}

.scenario-message-text {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
}

.scenario-question {
  font-size: var(--fs-body-lg);
  font-weight: 600;
}

.scenario-options {
  display: grid;
  gap: var(--space-2xs);
}

.scenario-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  width: 100%;
  text-align: left;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text);
  transition: border-color var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out);
}

.scenario-option:hover:not(:disabled) {
  border-color: var(--color-accent);
}

.scenario-option .opt-letter {
  font-family: var(--font-mono);
  color: var(--color-text-faint);
  flex-shrink: 0;
}

.scenario-option[data-state="correct"] {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.scenario-option[data-state="correct"] .opt-letter {
  color: var(--color-accent);
}

.scenario-option[data-state="incorrect"] {
  border-color: #d64545;
  background: rgba(214, 69, 69, 0.1);
}

.scenario-option:disabled {
  cursor: default;
}

.scenario-feedback {
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-size: var(--fs-body);
  display: none;
}

.scenario-feedback.is-visible {
  display: block;
}

.scenario-feedback[data-tone="correct"] {
  background: var(--color-accent-soft);
  border: 1px solid var(--color-accent);
}

.scenario-feedback[data-tone="incorrect"] {
  background: rgba(214, 69, 69, 0.08);
  border: 1px solid #d64545;
}

.scenario-feedback strong {
  display: block;
  margin-bottom: 0.3rem;
}

.scenario-reflection {
  font-size: var(--fs-small);
  color: var(--color-text-faint);
  font-style: italic;
  border-top: var(--border-hairline);
  padding-top: var(--space-md);
  display: none;
}

.scenario-reflection.is-visible {
  display: block;
}

.scenario-reset {
  justify-self: start;
  display: none;
}

.scenario-reset.is-visible {
  display: inline-flex;
}

/* --------------------------------------------------------------------------
   14. SKILLS ECOSYSTEM
   -------------------------------------------------------------------------- */
.skills-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  margin-bottom: var(--space-lg);
  border-bottom: var(--border-hairline);
  padding-bottom: var(--space-md);
}

.skills-tab {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  font-size: var(--fs-small);
  transition: border-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out);
}

.skills-tab:hover {
  color: var(--color-text);
}

.skills-tab[aria-selected="true"] {
  background: var(--color-accent-soft);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.skills-panel[hidden] { display: none; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-2xs);
}

.skill-chip {
  background: var(--color-surface);
  border: var(--border-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--fs-small);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  transition: border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.skill-chip:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.skill-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   15. AI CALLOUT — compact, not a full section
   -------------------------------------------------------------------------- */
.ai-callout-section {
  padding-block: var(--space-xl);
}

.ai-callout {
  border: var(--border-hairline);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--color-surface);
  max-width: var(--content-narrow);
}

.ai-callout-text {
  font-size: var(--fs-body);
  color: var(--color-text-muted);
  margin: var(--space-2xs) 0 var(--space-md);
  max-width: 62ch;
}

.ai-callout-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* --------------------------------------------------------------------------
   17. RESUME / EXPERIENCE
   -------------------------------------------------------------------------- */
.resume-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: var(--space-xl);
}

/* --------------------------------------------------------------------------
   19. CONTACT
   -------------------------------------------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact-layout-single {
  grid-template-columns: 1fr;
  max-width: var(--content-narrow);
}

.contact-headline {
  font-size: var(--fs-h1);
  max-width: 14ch;
  margin-bottom: var(--space-md);
}

.contact-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}

.contact-status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.contact-detail-list {
  display: grid;
  gap: var(--space-sm);
}

.contact-detail-list a {
  text-decoration: none;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

.contact-detail-list a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.contact-detail-label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  display: block;
  margin-bottom: 0.2rem;
}

.contact-form {
  display: grid;
  gap: var(--space-md);
  background: var(--color-surface);
  border: var(--border-hairline);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.form-field {
  display: grid;
  gap: 0.4rem;
}

.form-field label {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.form-field input,
.form-field select,
.form-field textarea {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
}

.form-field input:focus-visible,
.form-field select:focus-visible,
.form-field textarea:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.form-error {
  font-size: var(--fs-small);
  color: #e08a6f;
  min-height: 1.1em;
}

.form-status {
  font-size: var(--fs-small);
  color: var(--color-accent);
  min-height: 1.1em;
}

@media (max-width: 860px) {
  .contact-layout { grid-template-columns: 1fr; }
}
