/* ============================================================
   janackeh.me — Apple-aesthetic personal brand site
   style.css — design tokens + components
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root,
[data-theme='light'] {
  /* Apple-inspired neutral surfaces */
  --color-bg: #fbfbfd;
  --color-surface: #ffffff;
  --color-surface-2: #f5f5f7;
  --color-surface-offset: #f2f2f5;
  --color-divider: #d2d2d7;
  --color-border: #e3e3e8;

  --color-text: #1d1d1f;
  --color-text-muted: #6e6e73;
  --color-text-faint: #86868b;
  --color-text-inverse: #fbfbfd;

  /* Accent — rose gold (brand-coherent, Apple-restrained) */
  --color-primary: #b76e79;
  --color-primary-hover: #9e5c66;
  --color-primary-soft: #f7ebed;

  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 420ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06), 0 12px 28px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.08), 0 24px 60px rgba(0, 0, 0, 0.07);

  --content-narrow: 720px;
  --content-default: 1080px;
  --content-wide: 1240px;

  --font-body: 'Satoshi', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.83rem + 0.3vw, 0.9375rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1rem + 0.7vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.25rem + 1.1vw, 2.125rem);
  --text-2xl: clamp(2rem, 1.4rem + 2.4vw, 3.25rem);
  --text-3xl: clamp(2.75rem, 1.6rem + 5vw, 4.75rem);
  --text-hero: clamp(3.25rem, 1rem + 9vw, 7.5rem);

  --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;
  --space-32: 8rem;

  --header-h: 64px;
}

[data-theme='dark'] {
  --color-bg: #000000;
  --color-surface: #161617;
  --color-surface-2: #1c1c1e;
  --color-surface-offset: #202022;
  --color-divider: #2c2c2e;
  --color-border: #38383a;

  --color-text: #f5f5f7;
  --color-text-muted: #a1a1a6;
  --color-text-faint: #6e6e73;
  --color-text-inverse: #1d1d1f;

  --color-primary: #d99a9f;
  --color-primary-hover: #e6adb1;
  --color-primary-soft: #2a1a1c;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.6), 0 24px 60px rgba(0, 0, 0, 0.5);
}

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container.narrow {
  max-width: var(--content-narrow);
}
.section {
  padding-block: clamp(var(--space-12), 7vw, var(--space-32));
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 78%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition:
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}
.header--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  height: var(--header-h);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
}
.brand-mark {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.brand-name {
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
  font-weight: 500;
}
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 400;
}
.nav a:hover {
  color: var(--color-text);
}
.nav-cta {
  color: var(--color-primary) !important;
  font-weight: 500 !important;
}
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-surface-2);
  border-color: var(--color-divider);
}

/* ---------- Eyebrows / headings ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.section-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  max-width: 18ch;
}
.section-head {
  margin-bottom: var(--space-16);
  max-width: 60ch;
}
.section-lede {
  margin-top: var(--space-5);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 56ch;
  line-height: 1.5;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: var(--space-32) var(--space-24);
}
.hero-glow {
  position: absolute;
  top: -20%;
  left: 50%;
  translate: -50% 0;
  width: min(120vw, 1100px);
  height: 760px;
  background: radial-gradient(
    ellipse at center,
    color-mix(in oklab, var(--color-primary) 22%, transparent) 0%,
    transparent 62%
  );
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}
.hero-title {
  font-size: var(--text-hero);
  font-weight: 900;
  letter-spacing: -0.055em;
  line-height: 0.96;
  margin-block: var(--space-5) var(--space-8);
  color: var(--color-text);
}
.hero-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 54ch;
  margin-inline: auto;
  line-height: 1.5;
}
.hero-cta {
  margin-top: var(--space-12);
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}
.hero-meta {
  margin-top: var(--space-10);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}
.scroll-cue {
  position: absolute;
  bottom: var(--space-10);
  left: 50%;
  translate: -50% 0;
  width: 22px;
  height: 36px;
  border: 1.5px solid var(--color-divider);
  border-radius: var(--radius-full);
  display: flex;
  justify-content: center;
  padding-top: 7px;
  z-index: 1;
}
.scroll-cue span {
  width: 3px;
  height: 7px;
  background: var(--color-text-faint);
  border-radius: var(--radius-full);
  animation: scrollcue 1.8s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}
@keyframes scrollcue {
  0% { opacity: 0; transform: translateY(0); }
  40% { opacity: 1; }
  80% { opacity: 0; transform: translateY(8px); }
  100% { opacity: 0; }
}

/* ---------- Philosophy / About ---------- */
.philosophy {
  background: var(--color-surface-2);
  border-block: 1px solid var(--color-border);
}
.pullquote {
  font-size: var(--text-2xl);
  font-weight: 500;
  letter-spacing: -0.028em;
  line-height: 1.18;
  color: var(--color-text);
  max-width: 20ch;
}
.about-grid {
  margin-top: var(--space-16);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.about-body {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 62ch;
}
.about-body strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ---------- Work / Projects ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-4);
}
.project {
  grid-column: span 2;
  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:
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive),
    border-color var(--transition-interactive);
}
.project:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-divider);
}
.project-featured {
  grid-column: span 6;
  background: linear-gradient(160deg, var(--color-surface) 0%, var(--color-primary-soft) 140%);
  border-color: color-mix(in oklab, var(--color-primary) 22%, var(--color-border));
}
.project-tag {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-full);
}
.project-tag-concept {
  color: var(--color-text-faint);
  background: var(--color-surface-2);
}
.project-title {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.project-featured .project-title {
  font-size: var(--text-2xl);
}
.project-desc {
  color: var(--color-text-muted);
  line-height: 1.55;
  font-size: var(--text-base);
}
.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}
.project-meta span {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
}
.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  align-items: center;
  padding-top: var(--space-2);
}
.project-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--text-sm);
}
.project-link:hover {
  color: var(--color-primary-hover);
}
.project-soon {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
}
.project-concept {
  grid-column: span 3;
  background: var(--color-surface-offset);
}

/* ---------- Journey / Timeline ---------- */
.journey {
  background: var(--color-surface-2);
  border-block: 1px solid var(--color-border);
}
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-left: var(--space-8);
}
.timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-divider);
}
.tl-item {
  position: relative;
  padding: var(--space-6) 0 var(--space-6) var(--space-6);
}
.tl-dot {
  position: absolute;
  left: calc(-1 * var(--space-8) + 0px);
  top: var(--space-7);
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
}
.tl-dot-lineage {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.tl-period {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}
.tl-role {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: var(--space-2);
}
.tl-org {
  color: var(--color-text-muted);
  font-weight: 400;
}
.tl-desc {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.55;
  max-width: 68ch;
}
.journey-note {
  margin-top: var(--space-12);
  padding: var(--space-6) var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-muted);
  font-size: var(--text-base);
}
.journey-note strong {
  color: var(--color-text);
}

/* ---------- Learning & Certifications ---------- */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}
.cert-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.cert-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}
.cert-card[data-status="in-progress"] {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}
.cert-status {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.cert-card[data-status="in-progress"] .cert-status {
  background: var(--color-primary);
  color: #ffffff;
}
.cert-card[data-status="next"] .cert-status {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}
.cert-name {
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: var(--space-2);
}
.cert-org {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.cert-why {
  font-size: 0.86rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}
@media (max-width: 980px) {
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
  .certs-grid { grid-template-columns: 1fr; }
}

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-10);
}
.skill-group-title {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.chips li {
  font-size: var(--text-sm);
  padding: 0.45rem 0.85rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-weight: 400;
}

/* ---------- Contact ---------- */
.contact {
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-border);
  text-align: center;
}
.contact-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.contact-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
  max-width: 24ch;
}
.contact-lede {
  margin-top: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  max-width: 48ch;
}
.contact-links {
  margin-top: var(--space-12);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  width: 100%;
}
.contact-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  text-align: left;
}
.contact-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-divider);
}
.contact-card-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.contact-card-value {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  word-break: break-all;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-16) var(--space-10);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.footer-name {
  font-weight: 600;
  font-size: var(--text-base);
  letter-spacing: -0.01em;
}
.footer-tag {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}
.footer-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
}
.footer-nav a:hover {
  color: var(--color-text);
}
.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 700ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .project,
  .project-featured,
  .project-concept {
    grid-column: span 6;
  }
  .skills-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 720px) {
  .hero {
    min-height: auto;
    padding-block: clamp(6rem, 16vw, 7.5rem) var(--space-20);
    align-items: flex-start;
  }
  .nav {
    gap: var(--space-4);
  }
  .nav a:not(.nav-cta) {
    display: none;
  }
  .brand-name {
    display: none;
  }
  .project-grid {
    grid-template-columns: 1fr;
  }
  .project,
  .project-featured {
    grid-column: span 1;
  }
  .contact-links {
    grid-template-columns: 1fr;
  }
  .pullquote {
    font-size: var(--text-xl);
  }
  .hero-title {
    letter-spacing: -0.04em;
  }
}

@media (max-width: 420px) {
  .container {
    padding-inline: var(--space-5);
  }
  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }
  .btn {
    width: 100%;
  }
}