/* ============================================================
   main.css — Ejaz Ahmed Personal Website
   Design system: see DESIGN-STANDARDS.md + website-plan.md
   Structure:
     1.  CSS Custom Properties
     2.  Reset
     3.  Base Typography
     4.  Layout
     5.  Navigation
     6.  Footer
     7.  Hero
     8.  Cards
     9.  Skill Tags
    10.  Stats Strip
    11.  Buttons & CTAs
    12.  Page Header (inner pages)
    13.  Work Page
    14.  Community Page
    15.  About Page
    16.  Blog Placeholder
    17.  404 Page
    18.  Scroll Reveal
    19.  Responsive — 768px (tablet)
    20.  Responsive — 1200px (desktop)
   ============================================================ */

/* ============================================================
   1. CSS CUSTOM PROPERTIES
   ============================================================ */

:root {
  /* Colours */
  --color-bg:               #FFFFFF;
  --color-text-primary:     #1D1D1F;
  --color-text-secondary:   #6E6E73;
  --color-divider:          #D2D2D7;
  --color-accent-primary:   #1A1AFF;
  --color-accent-secondary: #F59E0B;
  --color-card-default:     #F5F5F7;
  --color-card-dark:        #1D1D1F;
  --color-card-featured:    #1A1AFF;
  --color-accent-hover:     #0000E0;

  /* Typography */
  --font-primary: 'Neue Montreal', system-ui, -apple-system, sans-serif;

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

  /* Layout */
  --container-max: 1200px;
  --container-pad: 1.25rem;

  /* Components */
  --radius-card:    16px;
  --radius-card-sm: 12px;
  --radius-tag:     100px;
  --shadow-card:    0 2px 20px rgba(0, 0, 0, 0.06);
  --shadow-elevated: 0 4px 32px rgba(0, 0, 0, 0.10);

  /* Motion */
  --transition-default: 200ms ease;
  --transition-slow:    400ms ease;
}

/* Dark mode — override custom properties */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:               #0A0A0A;
    --color-text-primary:     #F5F5F7;
    --color-text-secondary:   #A1A1A6;
    --color-divider:          #2D2D2D;
    --color-card-default:     #1A1A1A;
    --color-card-dark:        #2A2A2A;
    --shadow-card:            0 2px 20px rgba(0, 0, 0, 0.3);
    --shadow-elevated:        0 4px 32px rgba(0, 0, 0, 0.4);
  }
}

/* ============================================================
   2. RESET
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px; /* 64px nav + 16px breathing room for anchor links */
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

ul {
  list-style: none;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Focus-visible states — keyboard accessibility (WCAG) */
a:focus-visible,
.btn:focus-visible,
.tag:focus-visible,
.platform-link:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

.nav-toggle-label:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 4px;
  border-radius: 4px;
}

.card:focus-visible,
.card a:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 3px;
}

/* Screen-reader only — visually hidden but accessible */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip navigation link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  padding: 0.75rem 1.5rem;
  background: var(--color-accent-primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: 0 0 8px 8px;
  transition: top 0.2s ease;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
  color: #fff;
}

/* ============================================================
   3. BASE TYPOGRAPHY
   ============================================================ */

/* Neue Montreal — self-hosted woff2 */
@font-face {
  font-family: 'Neue Montreal';
  src: url('../fonts/NeueMontreal-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Neue Montreal';
  src: url('../fonts/NeueMontreal-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Neue Montreal';
  src: url('../fonts/NeueMontreal-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

h1 { font-size: clamp(2rem, 5vw, 3.75rem); font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 4vw, 2.5rem);  font-weight: 700; line-height: 1.15; letter-spacing: -0.015em; }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); font-weight: 700; line-height: 1.25; }
h4 { font-size: 1rem; font-weight: 700; line-height: 1.3; }

p { color: var(--color-text-secondary); line-height: 1.7; }

a:hover { color: var(--color-accent-primary); }

strong { color: var(--color-text-primary); font-weight: 700; }

/* ============================================================
   4. LAYOUT
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

section {
  padding-block: var(--space-lg); /* Mobile-first: 2.5rem. Bumps at 768px and 1200px */
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.section-heading {
  margin-bottom: var(--space-lg);
}

.divider {
  border: none;
  border-top: 1px solid var(--color-divider);
  margin-block: var(--space-xl);
}

/* ============================================================
   5. NAVIGATION
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  position: relative;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

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

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

.nav-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  transition: color var(--transition-default);
  padding-bottom: 2px;
}

.nav-links a:hover,
.nav-links a.active,
.nav-links a[aria-current="page"] {
  color: var(--color-text-primary);
}

.nav-links a.active::after,
.nav-links a[aria-current="page"]::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent-primary);
  border-radius: 2px;
}

/* CSS Checkbox hack — mobile nav toggle (sr-only, not display:none, for a11y) */
.nav-toggle-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.nav-toggle-label {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  cursor: pointer;
  z-index: 200;
  position: relative;
}

.nav-toggle-label span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-default), opacity var(--transition-default);
  transform-origin: center;
}

/* Animate hamburger to X when checked */
.nav-toggle-input:checked + .nav-toggle-label span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav-toggle-input:checked + .nav-toggle-label span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle-input:checked + .nav-toggle-label span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ============================================================
   6. FOOTER
   ============================================================ */

.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-lg);
  margin-top: var(--space-2xl);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  text-align: center;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.footer-social a {
  color: var(--color-text-secondary);
  transition: color var(--transition-default);
  display: flex;
  align-items: center;
}

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

.footer-social svg {
  width: 20px;
  height: 20px;
}

.footer-email {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-default);
}

.footer-email:hover {
  color: var(--color-accent-primary);
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* ============================================================
   7. HERO
   ============================================================ */

.hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(64px + var(--space-lg));
  padding-bottom: var(--space-xl);
  min-height: 85vh;
  display: flex;
  align-items: center;
}

.hero-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.hero-photo-wrap {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  order: -1;
  display: flex;
  justify-content: center;
}

.hero-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-divider);
}

.aurora-blob {
  position: absolute;
  top: -15%;
  right: -10%;
  width: 65%;
  height: 110%;
  background:
    radial-gradient(ellipse at 35% 45%, rgba(26, 26, 255, 0.35) 0%, transparent 55%),
    radial-gradient(ellipse at 70% 25%, rgba(124, 58, 237, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 20% 70%, rgba(26, 26, 255, 0.15) 0%, transparent 45%),
    radial-gradient(ellipse at 80% 75%, rgba(245, 158, 11, 0.1) 0%, transparent 40%);
  filter: blur(72px);
  animation: aurora-drift 10s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
  will-change: transform;
  backface-visibility: hidden;
}

@keyframes aurora-drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  30%       { transform: translate(-4%, 6%) scale(1.06); }
  65%       { transform: translate(5%, -4%) scale(0.97); }
}

@media (prefers-reduced-motion: reduce) {
  .aurora-blob {
    animation: none;
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  text-align: center;
}

.hero-name {
  margin-bottom: var(--space-xs);
}

.hero-role {
  font-size: clamp(1rem, 1.5vw + 0.5rem, 1.35rem);
  font-weight: 500;
  color: var(--color-accent-primary);
  margin-bottom: var(--space-md);
  letter-spacing: -0.01em;
}

.hero-intro {
  font-size: clamp(1rem, 1.2vw + 0.5rem, 1.175rem);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-bottom: var(--space-lg);
  line-height: 1.65;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  justify-content: center;
}

.hero-cta {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}

/* ============================================================
   8. CARDS
   ============================================================ */

/* Base card */
.card {
  border-radius: var(--radius-card);
  padding: var(--space-lg);
  transition: transform var(--transition-default), box-shadow var(--transition-default);
}

.card:hover {
  transform: translateY(-3px);
}

/* Default — light grey fill */
.card--default {
  background: var(--color-card-default);
}

.card--default .card-title { color: var(--color-text-primary); }
.card--default .card-body  { color: var(--color-text-secondary); }

.card--default:hover {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

/* White elevated — white with shadow */
.card--elevated {
  background: var(--color-bg);
  box-shadow: var(--shadow-card);
}

.card--elevated:hover {
  box-shadow: var(--shadow-elevated);
}

.card--elevated .card-title { color: var(--color-text-primary); }
.card--elevated .card-body  { color: var(--color-text-secondary); }

/* Featured — accent blue */
.card--featured {
  background: var(--color-card-featured);
  color: #FFFFFF;
}

.card--featured .card-title { color: #FFFFFF; }
.card--featured .card-body  { color: rgba(255, 255, 255, 0.82); }
.card--featured .card-label { color: rgba(255, 255, 255, 0.65); }
.card--featured a           { color: rgba(255, 255, 255, 0.9); }
.card--featured a:hover     { color: #FFFFFF; }

/* Dark */
.card--dark {
  background: var(--color-card-dark);
  color: var(--color-card-default);
}

.card--dark .card-title { color: var(--color-card-default); }
.card--dark .card-body  { color: rgba(245, 245, 247, 0.7); }
.card--dark a           { color: rgba(245, 245, 247, 0.9); }
.card--dark a:hover     { color: #FFFFFF; }

.card--dark:hover {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}

/* Card internals */
.card-icon {
  color: var(--color-accent-primary);
  margin-bottom: var(--space-sm);
  line-height: 1;
}

.card-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.card-title {
  margin-bottom: var(--space-xs);
}

.card-image {
  width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: var(--space-sm);
  object-fit: cover;
}

.card-body {
  font-size: 0.9375rem;
  line-height: 1.65;
  margin-bottom: 0;
}

.card-body + .card-body {
  margin-top: var(--space-xs);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.875rem;
  font-weight: 600;
  margin-top: var(--space-sm);
  transition: gap var(--transition-default);
}

.card-link:hover {
  gap: 0.5rem;
}

/* Card grids */
.cards-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

/* ============================================================
   9. SKILL TAGS
   ============================================================ */

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-tag);
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--color-card-default);
  color: var(--color-text-secondary);
  white-space: nowrap;
  transition: background var(--transition-default), color var(--transition-default);
}

.tag:hover {
  background: var(--color-accent-primary);
  color: #FFFFFF;
}

.tag--small {
  padding: 0.2rem 0.65rem;
  font-size: 0.75rem;
}

.tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

/* ============================================================
   10. STATS STRIP
   ============================================================ */

.stats-strip {
  background: var(--color-card-default);
  border-radius: var(--radius-card);
  padding: var(--space-lg) var(--space-lg);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg) var(--space-md);
  text-align: center;
}

.stat-value {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: calc(var(--space-xs) / 2);
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  line-height: 1.3;
}

/* ============================================================
   BRAND STRIP
   ============================================================ */

.brand-strip {
  background: var(--color-card-dark);
  padding-block: var(--space-xl);
  text-align: center;
}

.brand-logos {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
  mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
  margin-bottom: var(--space-md);
}

.brand-track {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  width: max-content;
  animation: marquee 30s linear infinite;
}

.brand-track:hover {
  animation-play-state: paused;
}

@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.brand-logo {
  height: 28px;
  width: auto;
  max-width: 120px;
  min-width: 60px;
  object-fit: contain;
  opacity: 0.6;
  filter: brightness(0) invert(1);
  transition: opacity 0.2s ease;
  flex-shrink: 0;
}

.brand-logo:hover {
  opacity: 1;
}

.brand-tagline {
  font-size: 0.8125rem;
  font-style: italic;
  color: rgba(245, 245, 247, 0.4);
  margin-bottom: var(--space-sm);
}

/* ============================================================
   11. BUTTONS & CTAs
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 100px;
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: var(--font-primary);
  transition: background var(--transition-default), color var(--transition-default),
              transform var(--transition-default), box-shadow var(--transition-default);
  cursor: pointer;
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

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

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(26, 26, 255, 0.35);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1.5px solid var(--color-divider);
}

.btn--secondary:hover {
  border-color: var(--color-text-primary);
  color: var(--color-text-primary);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-primary);
  padding-inline: 0;
  border-radius: 0;
}

/* Section-level CTA block */
.section-cta {
  text-align: center;
  padding: var(--space-xl) var(--space-sm);
  background: var(--color-card-default);
  border-radius: var(--radius-card);
}

.section-cta h2 {
  margin-bottom: var(--space-sm);
}

.section-cta p {
  margin-bottom: var(--space-lg);
  max-width: 480px;
  margin-inline: auto;
}

/* ============================================================
   12. PAGE HEADER (inner pages)
   ============================================================ */

.page-header {
  padding-top: calc(64px + var(--space-lg));
  padding-bottom: var(--space-lg);
}

.page-header h1 {
  margin-bottom: var(--space-sm);
}

.page-header p {
  font-size: clamp(1rem, 2vw, 1.125rem);
  max-width: 600px;
  line-height: 1.65;
}

/* ============================================================
   13. WORK PAGE
   ============================================================ */

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

.case-study-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.case-study-logo {
  align-self: flex-start;
  height: 144px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.case-study-card .tag--small {
  background: var(--color-text-primary);
  color: #FFFFFF;
}

.case-study-card .card-context {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* Featured project — full-width accent card */
.project-featured .card--featured {
  padding: var(--space-xl);
}

.project-featured .card-body {
  max-width: 680px;
}

/* Agency list — horizontal rows with dividers */
.agency-list {
  display: flex;
  flex-direction: column;
}

.agency-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-divider);
}

.agency-card:last-child {
  border-bottom: none;
}

.agency-card-header {
  flex-shrink: 0;
}

.agency-card .agency-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.agency-card .agency-network {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.agency-card .agency-detail {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

/* Client groups */
.client-groups {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.client-group h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.client-group .tags-row {
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.client-group .tag--small {
  border: 1px solid var(--color-divider);
}

/* Teaching grid */
.teaching-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

/* ============================================================
   14. COMMUNITY PAGE
   ============================================================ */

.community-featured {
  margin-bottom: var(--space-xl);
}

.community-featured .card--featured {
  padding: var(--space-xl);
}

.platform-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.platform-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: background var(--transition-default);
}

.platform-link:hover {
  background: rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
}

.community-stat {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: -0.02em;
  margin-bottom: calc(var(--space-xs) / 2);
}

.content-pillars {
  display: grid;
  gap: var(--space-sm);
  grid-template-columns: 1fr;
}

.pillar-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-card-default);
  border-radius: var(--radius-card-sm);
}

.pillar-icon {
  color: var(--color-accent-primary);
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.pillar-item h3 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.pillar-item p {
  font-size: 0.875rem;
}

/* ============================================================
   15. ABOUT PAGE
   ============================================================ */

.bio-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.bio-photo-wrap {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
}

.bio-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--color-card-default);
  border: 3px solid var(--color-divider);
}

/* Fallback when image is missing — hidden by default, shown via JS */
.bio-photo-placeholder {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: var(--color-card-default);
  border: 3px solid var(--color-divider);
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-accent-primary);
  letter-spacing: -0.02em;
}

.bio-photo.is-hidden { display: none; }
.bio-photo-placeholder.is-active { display: flex; }

.bio-text h1 {
  margin-bottom: var(--space-sm);
}

.bio-text p + p {
  margin-top: var(--space-md);
}

.bio-details {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.award-strip {
  padding: var(--space-md) var(--space-lg);
  background: var(--color-card-default);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.award-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.award-text h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.125rem;
}

.award-text p {
  font-size: 0.875rem;
  margin: 0;
}

.award-strip + .award-strip {
  margin-top: var(--space-sm);
}

.contact-section {
  padding: var(--space-xl) 0;
}

.contact-section h2 {
  margin-bottom: var(--space-sm);
}

.contact-section > p {
  margin-bottom: var(--space-lg);
}

.contact-email-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-accent-primary);
  margin-bottom: var(--space-lg);
  transition: opacity var(--transition-default);
}

.contact-email-link:hover {
  opacity: 0.75;
  color: var(--color-accent-primary);
}

.contact-socials {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Utility modifiers (moved from inline styles for CSP compliance) */
.page-header--flush { padding-bottom: 0; }
.section--flush-top { padding-top: 0; }
.card-body--lead { font-size: 1.0625rem; max-width: 680px; margin-bottom: var(--space-sm); }
.card-body--spaced { margin-top: var(--space-md); margin-bottom: var(--space-md); max-width: 680px; }
.tags-row--spaced { margin-top: 0.75rem; }
.tag--light { background: rgba(255,255,255,0.18); color: #fff; }
.tag--light:hover { background: rgba(255,255,255,0.3); color: #fff; }

/* ============================================================
   16. BLOG PLACEHOLDER
   ============================================================ */

.blog-placeholder {
  min-height: calc(100vh - 64px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg) var(--space-sm);
  padding-top: calc(64px + var(--space-lg));
  text-align: center;
}

.blog-placeholder h1 {
  margin-bottom: var(--space-sm);
}

.blog-placeholder p {
  max-width: 480px;
  margin-bottom: var(--space-lg);
}

/* ============================================================
   17. 404 PAGE
   ============================================================ */

.error-page {
  min-height: calc(100vh - 64px - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-sm);
  padding-top: calc(64px + var(--space-xl));
  text-align: center;
}

.error-content {
  max-width: 520px;
}

.error-number {
  font-size: clamp(5rem, 15vw, 9rem);
  font-weight: 700;
  color: var(--color-accent-primary);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.error-content h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: var(--space-sm);
}

.error-content p {
  font-size: 1.0625rem;
  margin-bottom: var(--space-lg);
}

.error-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   18. SCROLL REVEAL
   ============================================================ */

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

[data-reveal][data-delay="100"] { transition-delay: 0.10s; }
[data-reveal][data-delay="200"] { transition-delay: 0.20s; }
[data-reveal][data-delay="300"] { transition-delay: 0.30s; }
[data-reveal][data-delay="400"] { transition-delay: 0.40s; }

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

  .brand-track {
    animation: none;
    flex-wrap: wrap;
    justify-content: center;
    width: auto;
  }

  .brand-track > .brand-logo:nth-child(n+9) {
    display: none;
  }

  .brand-logos {
    -webkit-mask-image: none;
    mask-image: none;
  }
}

/* ============================================================
   19. RESPONSIVE — 768px (tablet)
   ============================================================ */

@media (min-width: 768px) {

  :root {
    --container-pad: 2rem;
  }

  section {
    padding-block: var(--space-xl);
  }

  .hero {
    padding-top: calc(64px + var(--space-xl));
    padding-bottom: var(--space-2xl);
    min-height: 90vh;
  }

  .hero-layout {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-xl);
  }

  .hero-photo-wrap {
    order: 1;
  }

  .hero-photo {
    width: 320px;
    height: 320px;
  }

  .hero-content {
    text-align: left;
  }

  .hero-tags {
    justify-content: flex-start;
  }

  .hero-cta {
    justify-content: flex-start;
  }

  .page-header {
    padding-top: calc(64px + var(--space-xl));
    padding-bottom: var(--space-xl);
  }

  /* Nav: hide hamburger, show links inline */
  .nav-toggle-label { display: none !important; }
  .nav-links {
    display: flex !important;
    position: static;
    background: transparent;
    flex-direction: row;
    align-items: center;
    height: auto;
  }

  /* Stats */
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
  }

  /* Cards */
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Work */
  .work-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Agency — horizontal rows at tablet+ */
  .agency-card {
    flex-direction: row;
    align-items: baseline;
    gap: var(--space-lg);
  }

  .agency-card-header {
    min-width: 220px;
  }

  /* Horizontal card layout for mentoring */
  .cards-grid--horizontal {
    grid-template-columns: 1fr;
  }

  .cards-grid--horizontal .card {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--space-md);
    align-items: start;
  }

  .cards-grid--horizontal .card-image {
    grid-row: 1 / -1;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 0;
  }

  /* Teaching */
  .teaching-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Content pillars */
  .content-pillars {
    grid-template-columns: repeat(2, 1fr);
  }

  /* About */
  .bio-section {
    flex-direction: row;
    gap: var(--space-2xl);
    align-items: flex-start;
  }

  .bio-photo {
    width: 200px;
    height: 200px;
  }

  .bio-photo-placeholder {
    width: 200px;
    height: 200px;
  }

  /* Footer */
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }

}

/* ============================================================
   20. RESPONSIVE — 1200px (desktop)
   ============================================================ */

@media (min-width: 1200px) {

  :root {
    --container-pad: 2.5rem;
  }

  section {
    padding-block: var(--space-2xl);
  }

  /* Cards — 4 column on home "What I Do" */
  .cards-grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Work — 3 column case studies */
  .work-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Case studies — featured asymmetric grid */
  .work-grid--featured {
    grid-template-columns: repeat(3, 1fr);
  }

  .work-grid--featured .case-study-card--featured {
    grid-column: span 2;
  }

  /* Content pillars — 4 across */
  .content-pillars {
    grid-template-columns: repeat(4, 1fr);
  }

}

/* ============================================================
   DARK MODE — Component overrides
   ============================================================ */

@media (prefers-color-scheme: dark) {

  /* Navigation */
  .site-header {
    background: rgba(10, 10, 10, 0.95);
  }

  /* Card-dark needs adjusted bg since variable is now used for dark surface */
  .card--dark .card-title { color: #F5F5F7; }
  .card--dark .card-body  { color: rgba(245, 245, 247, 0.7); }
  .card--dark a            { color: rgba(245, 245, 247, 0.9); }
  .card--dark a:hover      { color: #FFFFFF; }

  /* Case study logos — invert for dark bg */
  .case-study-logo {
    filter: brightness(0) invert(1);
  }

  /* Case study tags — invert for dark bg */
  .case-study-card .tag--small {
    background: #F5F5F7;
    color: #0A0A0A;
  }

  /* Card-default hover shadow */
  .card--default:hover {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  }

  /* Aurora blob — slightly reduced opacity on dark bg */
  .aurora-blob {
    background:
      radial-gradient(ellipse at 35% 45%, rgba(26, 26, 255, 0.25) 0%, transparent 55%),
      radial-gradient(ellipse at 70% 25%, rgba(124, 58, 237, 0.18) 0%, transparent 50%),
      radial-gradient(ellipse at 20% 70%, rgba(26, 26, 255, 0.1) 0%, transparent 45%),
      radial-gradient(ellipse at 80% 75%, rgba(245, 158, 11, 0.07) 0%, transparent 40%);
  }

  /* Hero photo border */
  .hero-photo {
    border-color: var(--color-divider);
  }

}

/* ============================================================
   MOBILE-ONLY — Navigation overlay
   ============================================================ */

@media (max-width: 767px) {

  .site-header {
    background: #FFFFFF;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  /* Show hamburger button */
  .nav-toggle-label {
    display: flex;
  }

  /* Hide nav links by default on mobile */
  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    top: 64px;
    background: var(--color-bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    z-index: 99;
    padding: var(--space-xl) var(--space-sm);
    border-top: 1px solid var(--color-divider);
  }

  .nav-links a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
  }

  /* Show nav when checkbox is checked */
  .nav-toggle-input:checked ~ .nav-links {
    display: flex;
  }

  .brand-logo {
    height: 22px;
    max-width: 100px;
    min-width: 48px;
  }

  .brand-track {
    gap: var(--space-lg);
    animation-duration: 25s;
  }

}

/* Mobile nav dark mode */
@media (max-width: 767px) and (prefers-color-scheme: dark) {
  .site-header {
    background: var(--color-bg);
  }
}