/* ====================================================
   DESIGN SYSTEM – Devanshu Shah Portfolio
   v2 — with Dark Mode, refined spacing & breakpoints
   ==================================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;850&family=Source+Sans+3:wght@400;500;600&display=swap');

/* ====================================================
   CSS CUSTOM PROPERTIES – LIGHT MODE (DEFAULT)
   ==================================================== */
:root {
  /* ── Colors ── */
  --bg-primary:         #FFFFFF;
  --bg-secondary:       #F7F7F7;
  --bg-card:            #FFFFFF;
  --text-primary:       #111111;
  --text-secondary:     #4A4A4A;
  --text-muted:         #999999;
  --accent:             #6C5CE7;
  --accent-hover:       #5849d4;
  --accent-soft:        #EBE8FF;
  --border:             #EAEAEA;
  --border-strong:      #D5D5D5;

  /* ── Shadows ── */
  --shadow-card:        0 4px 6px -1px rgba(0,0,0,0.04), 0 2px 4px -2px rgba(0,0,0,0.04);
  --shadow-card-hover:  0 12px 24px -4px rgba(108, 92, 231, 0.15), 0 4px 8px -4px rgba(108, 92, 231, 0.08);
  --shadow-nav:         0 1px 0 rgba(0, 0, 0, 0.06);

  /* ── Radius ── */
  --radius-card:        12px;
  --radius-btn:         8px;
  --radius-pill:        999px;

  /* ── Typography ── */
  --font-headings:      'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body:          'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* ── Layout ── */
  --nav-height:         64px;
  --max-width:          1280px;
  --section-pad:        112px;           /* desktop */
  --section-pad-mobile: 64px;            /* mobile  */

  /* ── Transitions ── */
  --transition:         0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ====================================================
   DARK MODE TOKENS
   ==================================================== */
[data-theme="dark"] {
  --bg-primary:         #0F0F0F;
  --bg-secondary:       #161616;
  --bg-card:            #1A1A1A;
  --text-primary:       #FFFFFF;
  --text-secondary:     #BBBBBB;
  --text-muted:         #666666;
  --accent:             #8A7CFF;
  --accent-hover:       #7B6FEE;
  --accent-soft:        rgba(138, 124, 255, 0.12);
  --border:             #2A2A2A;
  --border-strong:      #333333;
  --shadow-card:        0 4px 6px -1px rgba(0,0,0,0.3), 0 2px 4px -2px rgba(0,0,0,0.2);
  --shadow-card-hover:  0 12px 24px -4px rgba(138, 124, 255, 0.15), 0 4px 8px -4px rgba(138, 124, 255, 0.08);
  --shadow-nav:         0 1px 0 rgba(255, 255, 255, 0.06);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
  position: relative;
}

/* ── Grid Background — defined once, applied globally ── */
:root {
  --grid-size: 24px;
  --grid-line: rgba(0, 0, 0, 0.055);
  /* linear-gradient (NOT repeating) + background-size:24px 24px = reliable perfect squares */
  --grid-bg:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
}

[data-theme="dark"] {
  --grid-line: rgba(255, 255, 255, 0.045);
}

/* Global Grid Implementation using fixed pseudo-element to prevent scroll overlapping */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image: var(--grid-bg);
  background-size: var(--grid-size) var(--grid-size);
  background-position: top center;
}

/* Peripheral glows removed for strict hero look */


/* Cursor Spotlight */
.cursor-spotlight {
  display: none !important;
}

[data-theme="dark"] .cursor-spotlight {
  opacity: 0.25;
  filter: blur(40px);
}

[data-theme="light"] .cursor-spotlight {
  opacity: 0.1;
  filter: blur(60px);
}

/* Scroll Reveal Base */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), 
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered loading for grids */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), 
              transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-stagger.in-view > * {
  opacity: 1;
  transform: translateY(0);
}

.reveal-stagger.in-view > *:nth-child(1) { transition-delay: 0.1s; }
.reveal-stagger.in-view > *:nth-child(2) { transition-delay: 0.18s; }
.reveal-stagger.in-view > *:nth-child(3) { transition-delay: 0.26s; }
.reveal-stagger.in-view > *:nth-child(4) { transition-delay: 0.34s; }
.reveal-stagger.in-view > *:nth-child(5) { transition-delay: 0.42s; }
.reveal-stagger.in-view > *:nth-child(6) { transition-delay: 0.5s; }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; font-family: var(--font-main); border: none; background: none; }

/* Skip to content */
.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 0.875rem;
  transition: top var(--transition);
}
.skip-link:focus { top: 1rem; }

/* Focus ring */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ====================================================
   LAYOUT
   ==================================================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
}

.section {
  padding-block: var(--section-pad);
}

.section--alt {
  background-color: transparent;
}

/* ====================================================
   TYPOGRAPHY
   ==================================================== */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.eyebrow::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

h1, h2, h3, h4 {
  font-family: var(--font-headings);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2rem, 5vw, 3.25rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.25rem); letter-spacing: -0.02em; margin-bottom: 0.875rem; }
h3 { font-size: clamp(1.125rem, 2vw, 1.375rem); letter-spacing: -0.01em; }

p {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ====================================================
   BUTTONS
   ==================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6875rem 1.375rem;
  border-radius: var(--radius-btn);
  font-family: var(--font-headings);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
  min-height: 44px;           /* accessibility: minimum tap target */
  transition: all var(--transition);
}

.btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 4px 12px rgba(108, 92, 231, 0.2);
}

.btn--primary:active {
  transform: translateY(0) scale(0.98);
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  border: 2px solid var(--accent);
}
.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(108, 92, 231, 0.28);
}

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

/* Secondary button — always purple-outlined, visible in both themes */
.btn--secondary {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
  transition: all var(--transition);
}
.btn--secondary:hover {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(108,92,231,0.14);
}
[data-theme="dark"] .btn--secondary:hover {
  background: rgba(138,124,255,0.12);
  box-shadow: 0 4px 14px rgba(138,124,255,0.18);
}

.nav__cta-btn {
  padding: 0.5rem 1.125rem;
  font-size: 0.8125rem;
  letter-spacing: -0.01em;
  min-height: auto;
}

/* ====================================================
   NAVIGATION
   ==================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: color-mix(in srgb, var(--bg-primary) 88%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition),
              background-color 0.3s ease;
}
.nav.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 1px 24px rgba(0,0,0,0.06);
}
[data-theme="dark"] .nav.scrolled { box-shadow: 0 1px 24px rgba(0,0,0,0.4); }

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1.5rem;
  /* Explicit centering for wide viewports */
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  transition: opacity var(--transition), transform var(--transition);
}
.nav__logo:hover { 
  opacity: 0.85; 
  transform: scale(1.02); 
}
.nav__logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
  filter: brightness(0); /* Black in Light mode */
  transition: filter 0.3s ease;
}
[data-theme="dark"] .nav__logo-img {
  filter: brightness(0) invert(1); /* Pure White in Dark mode */
}

/* Desktop links */
.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
  justify-content: center;
}
.nav__links a {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.4rem 0.65rem;
  border-radius: 8px;
  transition: all var(--transition);
  min-height: 36px;
  display: flex;
  align-items: center;
  white-space: nowrap;
}
.nav__links a:hover  { 
  color: var(--text-primary); 
  background: rgba(var(--text-primary-rgb, 0,0,0), 0.04); 
}
[data-theme="dark"] .nav__links a:hover {
  background: rgba(255, 255, 255, 0.06);
}
.nav__links a.active { 
  color: var(--text-primary); 
  background: rgba(var(--text-primary-rgb, 0,0,0), 0.06); 
  font-weight: 600; 
}

/* Right group */
.nav__right {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

/* ── Dark mode toggle switch ──────────────────── */
.theme-switch {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  position: relative;
}
.theme-switch input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

/* Track */
.theme-switch__track {
  position: relative;
  width: 48px;
  height: 26px;
  background: var(--bg-secondary);
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--border-strong);
  transition: background var(--transition), border-color var(--transition);
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.theme-switch input:checked ~ .theme-switch__track {
  background: var(--accent);
  border-color: var(--accent);
}
.theme-switch:focus-within .theme-switch__track {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Thumb */
.theme-switch__thumb {
  position: absolute;
  left: 3px;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
  transition: transform var(--transition);
  z-index: 1;
}
.theme-switch input:checked ~ .theme-switch__track .theme-switch__thumb {
  transform: translateX(22px);
}

/* Icons inside track */
.theme-switch__icon {
  position: absolute;
  width: 11px;
  height: 11px;
  stroke-width: 2;
  transition: opacity var(--transition);
}
.theme-switch__icon--moon { right: 6px; stroke: var(--text-muted); opacity: 1; }
.theme-switch__icon--sun  { left: 5px;  stroke: #fff;              opacity: 0; }
.theme-switch input:checked ~ .theme-switch__track .theme-switch__icon--moon { opacity: 0; }
.theme-switch input:checked ~ .theme-switch__track .theme-switch__icon--sun  { opacity: 1; }

/* Small variant */
.theme-switch--small .theme-switch__track { width: 38px; height: 22px; }
.theme-switch--small .theme-switch__thumb { width: 14px; height: 14px; left: 3px; }
.theme-switch--small input:checked ~ .theme-switch__track .theme-switch__thumb { transform: translateX(16px); }
.theme-switch--small .theme-switch__icon { display: none; }

/* ── Mobile controls ──────────────────────────── */
.nav__mobile-controls {
  display: none;
  align-items: center;
  gap: 0.625rem;
}

/* ── Hamburger ────────────────────────────────── */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 7px;
  border-radius: 6px;
  background: transparent;
  transition: background var(--transition);
  width: 34px;
  height: 34px;
}
.nav__hamburger:hover { background: var(--bg-secondary); }
.nav__hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Overlay ──────────────────────────────────── */
.nav__overlay {
  position: fixed;
  inset: 0;
  z-index: 1100;
  background: rgba(0,0,0,0.44);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.nav__overlay.open { opacity: 1; pointer-events: all; }

/* ── Slide-out Drawer ─────────────────────────── */
.nav__drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  z-index: 1200;
  width: min(320px, 85vw);
  background: var(--bg-primary);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.4,0,0.2,1),
              background-color 0.3s ease, border-color 0.3s ease;
  box-shadow: -4px 0 40px rgba(0,0,0,0.1);
  overflow-y: auto;
}
[data-theme="dark"] .nav__drawer { box-shadow: -4px 0 40px rgba(0,0,0,0.5); }
.nav__drawer.open { transform: translateX(0); }

/* Drawer header */
.nav__drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.125rem 1.5rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.nav__drawer-logo {
  height: 36px;
  width: auto;
  object-fit: contain;
  filter: brightness(0);
  transition: filter 0.3s ease;
}
[data-theme="dark"] .nav__drawer-logo {
  filter: brightness(0) invert(1);
}

/* Close button */
.nav__drawer-close {
  width: 34px; height: 34px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  border: 1.5px solid var(--border);
  background: transparent;
  transition: all var(--transition);
}
.nav__drawer-close:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}
.nav__drawer-close svg { width: 16px; height: 16px; }

/* Drawer links */
.nav__drawer-links { padding: 0.75rem 0; flex: 1; }
.nav__drawer-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.5rem;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  min-height: 56px;
  transition: color var(--transition), background var(--transition);
  border-left: 3px solid transparent;
  letter-spacing: -0.01em;
}
.nav__drawer-link:hover {
  color: var(--accent);
  background: var(--accent-soft);
  border-left-color: var(--accent);
}
.nav__drawer-link.active {
  color: var(--accent);
  border-left-color: var(--accent);
}

.nav__drawer-link-num {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  min-width: 18px;
  flex-shrink: 0;
  transition: color var(--transition);
}
.nav__drawer-link:hover .nav__drawer-link-num,
.nav__drawer-link.active .nav__drawer-link-num { color: var(--accent); }

/* Drawer footer */
.nav__drawer-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}



/* Legacy Hero Removed */


/* ====================================================
   ABOUT
   ==================================================== */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about__venn {
  width: 100%;
  max-width: 450px;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 10px 30px rgba(0,0,0,0.15));
}


.about__body {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.about__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.tag:hover { border-color: var(--accent); color: var(--accent); }
.tag--accent {
  background: var(--accent-soft);
  border-color: rgba(108, 92, 231, 0.2);
  color: var(--accent);
}
[data-theme="dark"] .tag--accent { border-color: rgba(138, 124, 255, 0.25); }

.about__location {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}
.about__location svg { width: 15px; height: 15px; stroke: var(--accent); flex-shrink: 0; }

/* Profile card */
.about__card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1.875rem;
  box-shadow: var(--shadow-card);
  position: relative;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.about__card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #a29bfe);
  border-radius: var(--radius-card) var(--radius-card) 0 0;
}

.about__avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #a29bfe);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 1rem;
}

.about__card-name {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}
.about__card-role {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.375rem;
}
.about__card-divider {
  height: 1px;
  background: var(--border);
  margin-bottom: 1.375rem;
}
.about__card-items { display: flex; flex-direction: column; gap: 0.875rem; }
.about__card-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.about__card-icon {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.about__card-icon svg { width: 15px; height: 15px; stroke: var(--accent); stroke-width: 1.75; }

/* ====================================================
   CASE STUDIES (WORK)
   ==================================================== */
.work__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.work__header h2 { margin-bottom: 0; }

.work__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-card);
  transition: transform 0.4s cubic-bezier(0.2, 0, 0.2, 1), 
              box-shadow 0.4s cubic-bezier(0.2, 0, 0.2, 1),
              border-color 0.4s ease, 
              background-color 0.3s ease;
  height: 100%;
}

.case-card:hover {
  transform: translateY(-10px) scale(1.01);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.12);
  border-color: var(--accent);
}

[data-theme="dark"] .case-card:hover { 
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
  border-color: var(--accent); 
}

.case-card__visual {
  padding: 1.5rem 1.5rem 0.375rem;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  color: var(--accent);
}

.case-card__visual svg {
  width: 24px;
  height: 24px;
  opacity: 0.85;
}

.case-card__accent {
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #a29bfe);
  flex-shrink: 0;
  transition: height var(--transition);
}
.case-card:hover .case-card__accent {
  height: 6px;
}

.case-card__body {
  padding: 1.25rem 1.5rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.case-card__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.5rem;
  width: fit-content;
}

/* Company / Vertical subtle metadata line */
.case-card__company {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.01em;
  margin-bottom: 0.625rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.case-card__company-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-muted);
  opacity: 0.6;
  flex-shrink: 0;
}

.case-card__title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.case-card__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.125rem;
  flex: 1;
}

.case-card__metric {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 0.75rem 0.875rem;
  margin-bottom: 1.125rem;
}
.case-card__metric-num {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.03em;
  line-height: 1;
}
.case-card__metric-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.3;
}

.case-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  transition: gap var(--transition);
  margin-top: auto;
}
.case-card__link:hover { gap: 0.625rem; }
.case-card__link svg { width: 14px; height: 14px; stroke: currentColor; stroke-width: 2.25; }

/* Featured card spans all columns (3rd card at bottom) */
.case-card--featured { grid-column: 1 / -1; }
.case-card--featured .case-card__body {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto 1fr auto auto;
  gap: 0 2rem;
  align-items: start;
}
.case-card--featured .case-card__tag   { grid-column: 1; }
.case-card--featured .case-card__title { grid-column: 1; font-size: clamp(1.0625rem, 1.5vw, 1.25rem); }
.case-card--featured .case-card__desc  { grid-column: 1; }
.case-card--featured .case-card__cta   { grid-column: 1; }
.case-card--featured .case-card__metric {
  grid-column: 2;
  grid-row: 1 / -1;
  align-self: center;
  flex-direction: column;
  text-align: center;
  gap: 0.5rem;
  min-width: 130px;
  padding: 1.25rem;
}
.case-card--featured .case-card__metric-num { font-size: 2.25rem; }

/* CTA button inside card */
.case-card__cta {
  margin-top: auto;
  align-self: flex-start;
  font-size: 0.875rem;
  padding: 0.5625rem 1.125rem;
  min-height: 40px;
}


/* ====================================================
   PRODUCT THINKING
   ==================================================== */
.pt__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}


/* ====================================================
   STANDARD CARD CTA & INTERACTIONS
   ==================================================== */
.card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  transition: gap 0.25s cubic-bezier(0.19, 1, 0.22, 1), transform 0.2s ease;
  margin-top: auto;
  padding-top: 1.25rem;
}

.card-cta::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 10;
}

.card-cta svg {
  width: 16px;
  height: 16px;
  transition: transform 0.25s cubic-bezier(0.19, 1, 0.22, 1);
}

.case-card:hover .card-cta,
.prd-card:hover .card-cta {
  gap: 0.75rem;
}

.case-card:hover .card-cta svg,
.prd-card:hover .card-cta svg {
  transform: translateX(2px);
}

/* ====================================================
   PRD / DOCUMENTATION GRID
   ==================================================== */
.prd__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.prd-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  position: relative;
  transition: transform 0.4s cubic-bezier(0.2, 0, 0.2, 1), 
              box-shadow 0.4s cubic-bezier(0.2, 0, 0.2, 1),
              border-color 0.4s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.prd-card:hover {
  transform: translateY(-8px) scale(1.01);
  border-color: var(--accent);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .prd-card:hover {
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.prd-card__visual {
  margin-bottom: 1.5rem;
  color: var(--accent);
  opacity: 0.8;
}

.prd-card__status {
  display: inline-flex;
  padding: 0.35rem 0.75rem;
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  align-self: flex-start;
}

.prd-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  line-height: 1.3;
  color: var(--text-primary);
  transition: color var(--transition);
}

.prd-card:hover .prd-card__title {
  color: var(--accent);
}

.prd-card__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.prd-card__meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Standardized Card CTA Mapping (using .card-cta) */
.case-card__link,
.prd-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  transition: gap 0.25s cubic-bezier(0.19, 1, 0.22, 1);
  margin-top: auto;
}

.case-card:hover .case-card__link,
.prd-card:hover .prd-card__link {
  gap: 0.75rem;
}

.case-card__link svg,
.prd-card__link svg {
  transition: transform 0.25s cubic-bezier(0.19, 1, 0.22, 1);
}

.case-card:hover .case-card__link svg,
.prd-card:hover .prd-card__link svg {
  transform: translateX(2px);
}

/* Outer doc card (keep for full pages) */
.prd-doc {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Header bar */
.prd-doc__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.75rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}
.prd-doc__header-left { display: flex; align-items: baseline; gap: 0.875rem; flex-wrap: wrap; }
.prd-doc__status {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.275rem 0.625rem;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  flex-shrink: 0;
}
.prd-doc__status--shipped {
  background: rgba(0, 184, 148, 0.12);
  color: #00b894;
  border: 1px solid rgba(0, 184, 148, 0.25);
}
[data-theme="dark"] .prd-doc__status--shipped {
  background: rgba(0, 184, 148, 0.15);
  border-color: rgba(0, 184, 148, 0.3);
}
.prd-doc__title {
  font-size: clamp(1.0625rem, 1.75vw, 1.3125rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin: 0;
}
.prd-doc__header-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-shrink: 0;
}
.prd-doc__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.prd-doc__meta-item svg { stroke: currentColor; }

/* Body: sidebar + article */
.prd-doc__body {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 0;
  align-items: start;
}

/* Sidebar TOC */
.prd-toc {
  padding: 1.75rem 1.25rem;
  border-right: 1px solid var(--border);
  position: sticky;
  top: calc(var(--nav-height) + 1.5rem);
  align-self: start;
  transition: border-color 0.3s ease;
}
.prd-toc__label {
  font-size: 0.675rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.prd-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}
.prd-toc a {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
  border-left: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
  line-height: 1.35;
}
.prd-toc a:hover {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-soft);
}

/* Article content area */
.prd-content {
  padding: 0;
  min-width: 0;
}

/* Individual sections */
.prd-section {
  padding: 1.75rem 2rem;
  border-bottom: 1px solid var(--border);
  transition: border-color 0.3s ease;
}
.prd-section--last { border-bottom: none; }

.prd-section__title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}
.prd-section__icon { font-size: 1rem; line-height: 1; }

.prd-section p {
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--text-secondary);
  margin-bottom: 0.875rem;
}
.prd-section p:last-child { margin-bottom: 0; }

/* Bullet lists */
.prd-list {
  padding-left: 1.25rem;
  margin: 0.625rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.prd-list li {
  font-size: 0.9375rem;
  line-height: 1.68;
  color: var(--text-secondary);
}
.prd-list li strong { color: var(--text-primary); font-weight: 600; }

/* User Stories */
.prd-stories {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}
.prd-story {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 0.875rem 1rem;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}
.prd-story__persona {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.375rem;
}
.prd-story p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin: 0;
}

/* Requirements groups */
.prd-reqs { display: flex; flex-direction: column; gap: 1.25rem; margin-top: 0.5rem; }
.prd-req-group__label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.375rem;
}
.prd-req-group .prd-list { margin-top: 0; }

.case-card__cta-wrap {
  margin-top: auto;
  padding-top: 1.5rem;
}

/* Success Metrics grid */
.prd-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.875rem;
  margin-top: 1rem;
}
.prd-metric {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 0.875rem;
  text-align: center;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}
.prd-metric__num {
  font-size: clamp(1rem, 1.75vw, 1.375rem);
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 0.375rem;
}
.prd-metric__label {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}


.skills__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}


.skill-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition),
              background-color 0.3s ease, border-color 0.3s ease;
}
.skill-group:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.skill-group__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.125rem;
}
.skill-group__icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.skill-group__icon svg { width: 16px; height: 16px; stroke: var(--accent); stroke-width: 1.75; }
.skill-group__title { font-size: 0.9375rem; font-weight: 700; color: var(--text-primary); }

.skill-group__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.skill-tag {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.skill-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

/* ── HERO ─────────────────────────────────────────────── */
.hero {
  min-height: calc(100vh - 3rem);
  height: auto;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-height) + 2rem);
  padding-bottom: 3rem;
  background-color: transparent;
  overflow: hidden;
  transition: background-color 0.3s ease;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 4rem;
}

.hero__content {
  position: relative;
  z-index: 2;
}

/* Eyebrow label */
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  opacity: 0.85;
}

.hero__eyebrow-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.3); }
}

.hero__headline {
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

/* Typewriter wrap — fixed width prevents layout shift */
.hero__typewriter-wrap {
  display: inline-flex;
  align-items: baseline;
  color: var(--accent);
  min-width: 10ch;
  position: relative;
}

.hero__typewriter-static {
  display: none;
}

#hero-typed {
  display: inline;
}

/* Blinking cursor */
.hero__cursor {
  display: inline-block;
  color: var(--accent);
  font-weight: 300;
  margin-left: 1px;
  animation: cursor-blink 0.78s step-end infinite;
  line-height: 1;
}

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.hero__sub {
  font-size: clamp(0.9375rem, 1.5vw, 1.0625rem);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 2.5rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  height: 100%;
  min-height: 420px;
  width: 100%;
  margin-top: 2rem;
}

/* ── PM Artifact Badges ─────────────────────────────── */
.hero__artifacts {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 4;
}

.pm-badge {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.35rem 0.7rem;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);
  pointer-events: auto;
  transition: transform 0.3s cubic-bezier(0.2,0,0.2,1),
              box-shadow 0.3s cubic-bezier(0.2,0,0.2,1),
              border-color 0.3s ease;
}

.pm-badge:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 10px 24px rgba(108, 92, 231, 0.18);
  border-color: var(--accent);
}

[data-theme="dark"] .pm-badge {
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

[data-theme="dark"] .pm-badge:hover {
  box-shadow: 0 10px 24px rgba(138, 124, 255, 0.2);
}

.pm-badge__icon { font-size: 0.75rem; }
.pm-badge__text { letter-spacing: -0.01em; }

.pm-badge--1 {
  top: 14%;
  left: 3%;
  animation: badge-float-a 5s ease-in-out infinite;
  animation-delay: 0s;
}
.pm-badge--2 {
  top: 8%;
  right: 6%;
  animation: badge-float-b 5.5s ease-in-out infinite;
  animation-delay: 1.2s;
}
.pm-badge--3 {
  bottom: 28%;
  left: 2%;
  animation: badge-float-a 6s ease-in-out infinite;
  animation-delay: 0.6s;
}
.pm-badge--4 {
  bottom: 32%;
  right: 4%;
  animation: badge-float-b 5.2s ease-in-out infinite;
  animation-delay: 1.8s;
}

@keyframes badge-float-a {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-6px); }
}
@keyframes badge-float-b {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-4px); }
}

/* ── Hero Image Container ────────────────────────────── */
.hero__image-container--transparent {
  border: none;
  border-radius: 0;
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: clamp(280px, 30vw, 420px);
  height: auto;
  z-index: 3;
  background: transparent;
  overflow: visible;
}

/* Grounding effect beneath portrait */
.hero__image-ground {
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 85%;
  height: 80px;
  background: radial-gradient(
    ellipse 80% 100% at 50% 100%,
    rgba(108, 92, 231, 0.12) 0%,
    transparent 70%
  );
  pointer-events: none;
  z-index: -1;
}

[data-theme="dark"] .hero__image-ground {
  background: radial-gradient(
    ellipse 80% 100% at 50% 100%,
    rgba(138, 124, 255, 0.18) 0%,
    transparent 70%
  );
}

.hero__image {
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: none;
  box-shadow: none;
  outline: none;
  transform: scale(1.08); /* Matches existing scale */
  transform-origin: bottom center;
  display: block;
}

/* ── Premium Portal Glow Line ──────────────────────── */
.hero__image-glow-bar {
  position: absolute;
  bottom: 0px; 
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #8B5CF6, transparent);
  opacity: 0;
  z-index: 10;
  pointer-events: none;
  border-radius: 50%;
  box-shadow: 
    0 -1px 12px 2px rgba(139, 92, 246, 0.5),
    0 -2px 30px 6px rgba(139, 92, 246, 0.25);
  animation: portalGlowReveal 1.5s cubic-bezier(0.2, 0.8, 0.2, 1) forwards,
             portalGlowShimmer 4s ease-in-out infinite alternate 1.5s;
}

@keyframes portalGlowReveal {
  0%   { opacity: 0; transform: scaleX(0.7) translateY(1px); filter: blur(4px); }
  100% { opacity: 1; transform: scaleX(1) translateY(1px); filter: blur(0px); }
}

@keyframes portalGlowShimmer {
  0%   { opacity: 0.85; filter: brightness(1); }
  100% { opacity: 1; filter: brightness(1.2) drop-shadow(0 -2px 6px rgba(139,92,246,0.35)); }
}

/* ====================================================
   PRODUCT IMPACT SNAPSHOT
   ==================================================== */
.impact-snapshot {
  background-color: transparent;
  text-align: center;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.impact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.5rem 1.5rem;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  text-align: center;
}

.impact-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.impact-card__val {
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 850;
  color: var(--accent);
  letter-spacing: -0.03em;
  line-height: 1;
}

.impact-card__label {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
  line-height: 1.4;
}

.impact-card__icon {
  margin-bottom: 0.5rem;
  color: var(--text-muted);
  opacity: 0.6;
}

/* ====================================================
   FOOTER (Premium Product Style)
   ==================================================== */
.footer {
  background-color: transparent;
  border-top: 1px solid var(--border);
  padding-block: 5rem 3rem;
  transition: border-color 0.3s ease;
}

.footer__top {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.5fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

@media (max-width: 900px) {
  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 3rem 2rem;
  }
}

@media (max-width: 600px) {
  .footer__top {
    grid-template-columns: 1fr;
  }
}

/* ── Identity Column ── */
.footer__col--identity {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 320px;
}

.footer__logo-link {
  display: inline-block;
  margin-bottom: 1.25rem;
}

.footer__logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  filter: brightness(0);
  opacity: 0.95;
  transition: filter 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
}
.footer__logo-img:hover {
  transform: scale(1.05);
}
[data-theme="dark"] .footer__logo-img {
  filter: brightness(0) invert(1);
}

.footer__name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.125rem;
  letter-spacing: -0.01em;
}

.footer__role {
  font-size: 0.8125rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__bio {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.footer__location {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
}

/* ── Navigation Columns ── */
.footer__col {
  display: flex;
  flex-direction: column;
}

.footer__heading {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.footer__link {
  display: inline-flex;
  align-items: center;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  font-weight: 400;
  transition: color 0.2s ease, transform 0.2s ease;
  width: fit-content;
}

.footer__link-arrow {
  display: inline-block;
  margin-left: 0.35rem;
  font-size: 0.85em;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s ease, transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  color: var(--accent);
}

.footer__link:hover {
  color: var(--accent);
}

.footer__link:hover .footer__link-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ── Bottom Strip ── */
.footer__bottom {
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__copy { 
  font-size: 0.8125rem; 
  color: var(--text-muted); 
}

.footer__copy--right {
  text-align: right;
}

@media (max-width: 600px) {
  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer__copy--right {
    text-align: left;
  }
}

/* ====================================================
   SCROLL REVEAL ANIMATIONS
   ==================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.4,0,0.2,1),
              transform 0.5s cubic-bezier(0.4,0,0.2,1);
}
.reveal.in-view { opacity: 1; transform: translateY(0); }
.reveal--delay-1 { transition-delay: 0.10s; }
.reveal--delay-2 { transition-delay: 0.20s; }
.reveal--delay-3 { transition-delay: 0.30s; }

/* ====================================================
   RESPONSIVE — Tablet (<= 1024px)
   ==================================================== */
@media (max-width: 1024px) {
  .work__grid { grid-template-columns: repeat(2, 1fr); }

  /* Hero: Stacked layout, content on top, portrait below */
  .hero__grid { 
    grid-template-columns: 1fr; 
    gap: 2rem; 
    text-align: center;
  }
  .hero__visual { order: 1; min-height: 360px; }
  .hero__sub { margin-inline: auto; }
  .hero__actions { justify-content: center; }
  .hero__eyebrow { justify-content: center; }

  /* Fix: ensure headline + typewriter stay centered on mobile */
  .hero__headline { text-align: center; }
  .hero__typewriter-wrap {
    display: inline-flex;
    justify-content: center;
    min-width: 0;          /* allow natural centering */
    width: auto;
  }
  .hero__cursor { display: inline; }

  /* Reposition PM badges for tablet */
  .pm-badge--1 { top: 10%; left: 6%; }
  .pm-badge--2 { top: 10%; right: 6%; }
  .pm-badge--3 { bottom: 8%; left: 6%; }
  .pm-badge--4 { bottom: 8%; right: 6%; }

  /* Impact: 2-col on smaller layouts */
  .impact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ====================================================
   RESPONSIVE — Tablet (<= 768px)
   ==================================================== */
@media (max-width: 768px) {
  /* Section spacing */
  .section { padding-block: var(--section-pad-mobile); }

  /* Hero mobile: hide badges, shrink portrait */
  .hero__artifacts { display: none; }
  .hero__visual { min-height: 300px; }
  .hero__image-container--transparent {
    width: clamp(270px, 82vw, 340px);
  }
  .hero__eyebrow { justify-content: center; }

  /* Nav: hide desktop links + right group, show mobile controls */
  .hero__visual-bg {
    width: 320px;
    height: 320px;
  }

  .nav__links,
  .nav__right       { display: none; }
  .nav__mobile-controls { display: flex; }

  /* Layouts */
  .about__grid   { grid-template-columns: 1fr; gap: 2.25rem; }
  /* ── Mobile Horizontal Carousel for Card Grids ── */
  .work__grid,
  .pt__grid,
  .prd__grid {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 1rem;
    padding-bottom: 0.75rem;
    scrollbar-width: thin;
    scrollbar-color: var(--accent) transparent;
  }

  .work__grid > *,
  .pt__grid > *,
  .prd__grid > * {
    flex: 0 0 auto;
    width: clamp(260px, 72vw, 320px);
    scroll-snap-align: start;
    align-self: stretch;
    height: auto;
  }

  /* Experience: also carousel on mobile */
  .experience .work__grid {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto;
    gap: 1rem !important;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }
  .experience .work__grid > * {
    flex: 0 0 auto;
    width: clamp(260px, 72vw, 320px);
    scroll-snap-align: start;
    align-self: stretch;
    height: auto;
  }

  /* Featured card: reset to single column on mobile */
  .case-card--featured { grid-column: auto; }
  .case-card--featured .case-card__body {
    display: flex;
    flex-direction: column;
  }
  .case-card--featured .case-card__metric {
    flex-direction: row;
    align-self: stretch;
    grid-column: auto;
    grid-row: auto;
  }

  /* pt__grid carousel is already handled above */
  .skills__grid  { grid-template-columns: 1fr; }
  .work__header  { flex-direction: column; align-items: flex-start; }
  .footer__inner { flex-direction: column; align-items: flex-start; }

  /* PRD responsive */
  .prd-doc__body { grid-template-columns: 1fr; }
  .prd-toc {
    position: relative;
    top: 0;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem;
    overflow-x: auto;
  }
  .prd-toc ul {
    flex-direction: row;
    gap: 1rem;
    white-space: nowrap;
  }
  .prd-toc a { border-left: none; border-bottom: 2px solid transparent; padding: 0.25rem 0; }
  .prd-toc a:hover { border-bottom-color: var(--accent); background: transparent; }

  .prd-section { padding: 1.5rem; }
  .prd-metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .prd-doc__header { padding: 1.5rem; }

  .hero__stats { gap: 1.5rem; }
  
  /* Impact: 2-col on mobile (no carousel) */
  .impact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* ── Carousel scrollbar styling ── */
  .work__grid::-webkit-scrollbar,
  .pt__grid::-webkit-scrollbar,
  .prd__grid::-webkit-scrollbar {
    height: 4px;
  }
  .work__grid::-webkit-scrollbar-track,
  .pt__grid::-webkit-scrollbar-track,
  .prd__grid::-webkit-scrollbar-track {
    background: transparent;
  }
  .work__grid::-webkit-scrollbar-thumb,
  .pt__grid::-webkit-scrollbar-thumb,
  .prd__grid::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 4px;
  }

  /* ── Mobile Typography — scale everything down ── */
  html { font-size: 13.5px; }

  .section-title { font-size: 1.5rem; }
  .section-subtitle { font-size: 0.8125rem; }

  .hero__headline { font-size: clamp(1.4rem, 6vw, 1.75rem); }
  .hero__sub { font-size: 0.8125rem; line-height: 1.6; }
  .hero__eyebrow { font-size: 0.65rem; }

  .case-card__title { font-size: 1.05rem; }
  .case-card__desc { font-size: 0.85rem; line-height: 1.5; }
  .case-card__tag { font-size: 0.7rem; padding: 0.25rem 0.55rem; }
  .case-card__company { font-size: 0.7rem; margin-bottom: 0.4rem; }

  .card-cta { font-size: 0.8rem; }

  .pt-card__title { font-size: 0.9rem; }
  .pt-card__summary { font-size: 0.775rem; }
  .pt-card__tag { font-size: 0.625rem; }

  .exp-card__title,
  .teardown-card__title { font-size: 0.9rem; }
  .exp-card__desc,
  .teardown-card__desc { font-size: 0.775rem; }

  .impact-card__val { font-size: clamp(1.5rem, 5vw, 2rem); }
  .impact-card__label { font-size: 0.7rem; }
  .impact-card { padding: 1.5rem 1rem; border-radius: 14px; }

  .skill-group__title { font-size: 0.825rem; }
  .skill-tag { font-size: 0.7rem; padding: 0.2rem 0.55rem; }

  .footer__heading { font-size: 0.775rem; }
  .footer__link { font-size: 0.8125rem; }
  .footer__bio { font-size: 0.8125rem; }
  .footer__role { font-size: 0.7rem; }
  .footer__copy { font-size: 0.7rem; }

  .btn { font-size: 0.8125rem; padding: 0.55rem 1rem; }

  /* ── Uniform card sizing in mobile carousels ── */
  .work__grid > *,
  .pt__grid > *,
  .prd__grid > *,
  .experience .work__grid > * {
    min-height: 220px;
    display: flex;
    flex-direction: column;
  }

  /* Card body fills remaining space for uniform appearance */
  .work__grid > * .case-card__body,
  .pt__grid > * .case-card__body,
  .prd__grid > * .case-card__body {
    flex: 1;
    display: flex;
    flex-direction: column;
  }

  .work__grid > * .case-card__cta-wrap,
  .pt__grid > * .case-card__cta-wrap,
  .prd__grid > * .case-card__cta-wrap {
    margin-top: auto;
  }

  /* Card visual icon area — compact on mobile */
  .case-card__visual { padding: 1rem 1.25rem 0.5rem; }
  .case-card__visual svg { width: 22px; height: 22px; }
  .case-card__body { padding: 0.65rem 1rem 0.85rem; }
}

/* ====================================================
   CONTACT
   ==================================================== */
.contact { text-align: center; }
.contact__inner { max-width: 560px; margin-inline: auto; }
.contact__title { margin-bottom: 0.875rem; }
.contact__sub { font-size: 1.0625rem; margin-bottom: 2.25rem; }
.contact__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.nav__right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav__resume-btn {
  font-size: 0.875rem;
  padding: 0.625rem 1.125rem;
  background: transparent;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  transition: all var(--transition);
}

.nav__resume-btn:hover {
  background: var(--accent);
  color: #ffffff;
  transform: translateY(-2px);
}

/* ──────────────────────────────────────────────────
   BACK BUTTON
   ────────────────────────────────────────────────── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: all var(--transition);
  padding: 0.5rem 0.75rem;
  margin-left: -0.75rem;
  border-radius: 8px;
}

.back-link svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition);
}

.back-link:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.back-link:hover svg {
  transform: translateX(-4px);
}

/* ──────────────────────────────────────────────────
   GLOBAL HOVER EFFECTS
   ────────────────────────────────────────────────── */
/* Cards */
.case-card, .pt-card, .prd-card, .skill-group, .impact-card {
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition) !important;
}

.case-card:hover, .prd-card:hover, .impact-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--accent);
}

/* Images */
.hero__image, .case-card__img, .about__img {
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.case-card:hover .case-card__img {
  transform: scale(1.05);
}

/* Links */
.nav__drawer-link, .footer__links a {
  position: relative;
}

.nav__drawer-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav__drawer-link:hover::after {
  width: 100%;
}







/* ──────────────────────────────────────────────────
   PRODUCT THEMED GRAPHICS
   ────────────────────────────────────────────────── */

.section::before {
  content: '';
  position: absolute;
  top: 10%;
  left: 5%;
  width: 100px;
  height: 100px;
  background-image: radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.4;
  pointer-events: none;
  z-index: -1;
}

.work::after {
  content: '→';
  position: absolute;
  right: 10%;
  bottom: 5%;
  font-size: 4rem;
  color: var(--accent-soft);
  font-weight: 800;
  opacity: 0.2;
}

/* Specific product graphics */
.pt::after {
  content: '';
  position: absolute;
  top: 15%;
  right: 5%;
  width: 120px;
  height: 60px;
  background-image: 
    linear-gradient(to right, var(--accent-soft) 2px, transparent 2px),
    linear-gradient(to right, var(--accent-soft) 2px, transparent 2px),
    linear-gradient(to right, var(--accent-soft) 2px, transparent 2px);
  background-size: 30px 40px, 30px 20px, 30px 50px;
  background-position: 0 100%, 40px 100%, 80px 100%;
  background-repeat: no-repeat;
  opacity: 0.3;
  pointer-events: none;
}

.prds::before {
  content: '';
  position: absolute;
  bottom: 10%;
  left: 3%;
  width: 80px;
  height: 80px;
  border: 1px dashed var(--border-strong);
  border-radius: 4px;
  opacity: 0.5;
  transform: rotate(-15deg);
}

@media (max-width: 768px) {
  .nav__right {
    display: none;
  }
}

/* ──────────────────────────────────────────────────
   SECTION-SPECIFIC REFINEMENTS
   ────────────────────────────────────────────────── */
.pt .section-header {
  margin-bottom: 3.5rem;
}

/* ──────────────────────────────────────────────────
   ECOSYSTEM CONTRIBUTIONS (prev. Other Experience)
   ────────────────────────────────────────────────── */
.experience {
  background-color: transparent;
}

/* 3-per-row compact grid on desktop */
.experience .work__grid {
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.exp-card__links {
  margin-top: 0.875rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

/* ──────────────────────────────────────────────────
   PRODUCT TEARDOWNS SECTION
   ────────────────────────────────────────────────── */
.teardowns {
  background-color: transparent;
}

/* Extra breathing room between subtitle and cards */
.teardowns .section-header {
  margin-bottom: 3rem;
}
/* Teardown card icon — perfectly centered icon inside gradient container */
.teardown-card__icon {
  background: linear-gradient(135deg, var(--accent-soft) 0%, transparent 80%);
  justify-content: center !important;
  align-items: center !important;
  min-height: 56px;
}

.teardown-card__icon svg {
  width: 24px !important;
  height: 24px !important;
  flex-shrink: 0;
}

[data-theme="dark"] .teardown-card__icon {
  background: linear-gradient(135deg, rgba(138,124,255,0.12) 0%, transparent 80%);
}

/* ──────────────────────────────────────────────────
   TEARDOWN PAGE — structured article layout
   ────────────────────────────────────────────────── */
.teardown-page {
  max-width: 780px;
  margin: 0 auto;
  padding: calc(var(--nav-height) + 3rem) var(--container-pad) 5rem;
}

.teardown-page__header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.teardown-page__product-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.teardown-page__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  line-height: 1.15;
  margin-bottom: 1rem;
}

.teardown-page__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.teardown-page__meta span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.teardown-section {
  margin-bottom: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.teardown-section:last-child {
  border-bottom: none;
}

.teardown-section__num {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.7;
  margin-bottom: 0.25rem;
}

.teardown-section__title {
  font-size: 1.175rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.teardown-section__body {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.teardown-section__body p + p { margin-top: 0.75rem; }

.teardown-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.teardown-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.teardown-list li::before {
  content: '→';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.05em;
}

.teardown-key-lessons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.teardown-lesson {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1rem 1.25rem;
  font-size: 0.9375rem;
  color: var(--text-primary);
  line-height: 1.6;
  border-left: 3px solid var(--accent);
}

/* Grid background is applied only to body (see line ~87).
   DO NOT add background-image: var(--grid-bg) to sections —
   that causes visible grid duplication/stacking on scroll. */