/* ==========================================================
   Abdul Mannan — Portfolio
   Light-first, premium, technology-focused visual identity.
   Dark mode available via the navbar theme toggle.
   ========================================================== */

/* ---------- Reset ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

/* ---------- Theme tokens ---------- */
/* Light mode (default) — clean off-white + deep navy, refined electric blue as the accent */
:root {
  --bg: #f7f8fa;
  --bg-rgb: 247, 248, 250;
  --bg-alt: #eef1f5;
  --card: #ffffff;
  --card-hover: #eef2f6;
  --border: #dde3ea;
  --border-rgb: 221, 227, 234;
  --border-soft: rgba(15, 23, 42, 0.08);

  --accent: #0f2c47;
  --accent-rgb: 15, 44, 71;
  --accent-2: #2563eb;
  --accent-2-rgb: 37, 99, 235;
  --highlight: #3f6690;
  --highlight-rgb: 63, 102, 144;
  --on-accent: #f7f8fa;
  --glow-shadow: 0 0 0 rgba(0, 0, 0, 0);

  --text: #101826;
  --text-rgb: 16, 24, 38;
  --text-secondary: #46536b;
  --text-muted: #74808f;

  --shadow-sm: 0 8px 20px rgba(16, 24, 38, 0.06);
  --shadow-md: 0 16px 32px rgba(16, 24, 38, 0.10);
  --shadow-lg: 0 24px 50px rgba(16, 24, 38, 0.12);

  --navbar-h: 72px;
  --radius: 8px;
  --radius-lg: 10px;

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  /* UI chrome (nav, buttons, labels, tags) now shares the body font, Inter,
     rather than a separate monospace — kept as its own token so every rule
     that referenced it updates from this one place. */
  --font-mono: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
}

/* Dark mode — explicitly designed, not an inversion */
:root[data-theme="dark"] {
  --bg: #0a1420;
  --bg-rgb: 10, 20, 32;
  --bg-alt: #101d2c;
  --card: #16283c;
  --card-hover: #1c3049;
  --border: #253a50;
  --border-rgb: 37, 58, 80;
  --border-soft: rgba(226, 232, 240, 0.14);

  --accent: #3b82f6;
  --accent-rgb: 59, 130, 246;
  --accent-2: #7db3f7;
  --accent-2-rgb: 125, 179, 247;
  --highlight: #8fb3d9;
  --highlight-rgb: 143, 179, 217;
  --on-accent: #0a1420;
  --glow-cyan-rgb: 34, 211, 238;
  --glow-shadow: 0 0 24px rgba(59, 130, 246, 0.35);

  --text: #eef1f5;
  --text-rgb: 238, 241, 245;
  --text-secondary: #a9b4c4;
  --text-muted: #778496;

  --shadow-sm: 0 8px 20px rgba(0, 0, 0, 0.3), 0 0 16px rgba(59, 130, 246, 0.08);
  --shadow-md: 0 20px 40px rgba(0, 0, 0, 0.35), 0 0 28px rgba(59, 130, 246, 0.14);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 40px rgba(59, 130, 246, 0.18);
}

/* ---------- Smooth theme transitions ---------- */
*, *::before, *::after {
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

body {
  font-family: var(--font-body);
  line-height: 1.65;
  color: var(--text-secondary);
  background-color: var(--bg);
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
}

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

ul {
  list-style: none;
}

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

svg {
  width: 100%;
  height: 100%;
}

.section-inner {
  width: 90%;
  max-width: 1180px;
  margin: 0 auto;
}

/* ---------- Reveal on scroll (single, consistent entrance) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, color 0.2s ease;
}

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

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

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

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

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-h);
  z-index: 500;
  background: rgba(var(--bg-rgb), 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.navbar.scrolled {
  border-bottom-color: rgba(var(--accent-rgb), 0.3);
}

.nav-inner {
  max-width: 1180px;
  width: 90%;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--text);
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand-mark {
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: 6px;
  background: #060e1a;
  border: 1px solid var(--border);
  color: var(--accent-2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-mark svg,
.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.nav-menu {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: 6px;
}

.nav-link {
  position: relative;
  display: block;
  padding: 10px 7px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  color: var(--text-muted);
  border-radius: 6px;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text);
}

.nav-link.active {
  color: var(--text);
}

.nav-link-home {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-home-icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.nav-indicator {
  position: absolute;
  bottom: -1px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: left 0.3s cubic-bezier(0.22, 1, 0.36, 1), width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Nav actions (theme toggle + CTA + hamburger) ---------- */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.theme-toggle {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  flex-shrink: 0;
  pointer-events: auto;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.theme-toggle:hover {
  color: var(--accent-2);
  border-color: var(--accent);
  background: var(--card-hover);
  transform: translateY(-1px);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  display: none;
  pointer-events: none;
}

/* Light mode (default): show moon = click to go dark */
:root:not([data-theme="dark"]) .theme-toggle .icon-moon {
  display: block;
}

/* Dark mode: show sun = click to go light */
:root[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

.nav-cta {
  flex-shrink: 0;
  padding: 10px 20px;
  font-size: 0.85rem;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 2px;
  width: 22px;
  background-color: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease, background-color 0.2s ease;
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--navbar-h) + 28px);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(var(--text-rgb), 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--text-rgb), 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 75% 55% at 30% 30%, #000 40%, transparent 100%);
}

.hero-glow {
  position: absolute;
  width: 560px;
  height: 560px;
  top: -180px;
  right: -120px;
  background: radial-gradient(circle, rgba(var(--accent-rgb), 0.14), transparent 68%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: 90%;
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1.1fr 0.9fr;
  gap: 32px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-2);
  background: rgba(var(--accent-rgb), 0.08);
  margin-bottom: 22px;
}

.hero-title {
  font-size: clamp(2.1rem, 4.6vw, 3.2rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  color: var(--text);
}

.accent-text {
  color: var(--accent-2);
}

.hero-role {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.hero-desc {
  color: var(--text-muted);
  font-size: 1.03rem;
  max-width: 540px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 42px;
}

.hero-stats {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  padding-top: 26px;
  border-top: 1px solid var(--border-soft);
}

.stat-chip {
  display: flex;
  flex-direction: column;
}

.stat-chip strong {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.stat-chip span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ---------- Hero entrance animation (plays once on load, not scroll-triggered) ---------- */
.hero-enter > * {
  opacity: 0;
  animation: hero-fade-up 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-enter > *:nth-child(1) { animation-delay: 0.05s; }
.hero-enter > *:nth-child(2) { animation-delay: 0.15s; }
.hero-enter > *:nth-child(3) { animation-delay: 0.25s; }
.hero-enter > *:nth-child(4) { animation-delay: 0.35s; }
.hero-enter > *:nth-child(5) { animation-delay: 0.45s; }
.hero-enter > *:nth-child(6) { animation-delay: 0.55s; }

.hero-enter-visual {
  opacity: 0;
  animation: hero-fade-scale 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: 0.3s;
}

.hero-enter-photo {
  opacity: 0;
  animation: hero-fade-scale 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: 0.1s;
}

@keyframes hero-fade-up {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes hero-fade-scale {
  from { opacity: 0; transform: scale(0.94); }
  to { opacity: 1; transform: scale(1); }
}

/* ---------- Hero photo ---------- */
.hero-left {
  display: flex;
  flex-direction: column;
  gap: 18px;
  justify-self: center;
  flex-shrink: 0;
}

.hero-photo {
  width: 240px;
  aspect-ratio: 3 / 4;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  flex-shrink: 0;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-photo-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-photo-actions .btn {
  width: 100%;
  justify-content: center;
}

/* ---------- Hero visual: orbiting skills widget ---------- */
.hero-visual {
  position: relative;
  width: 380px;
  max-width: 100%;
  margin: 0 auto;
  justify-self: center;
}

.orbit-widget {
  position: relative;
  width: 380px;
  height: 380px;
  margin: 0 auto;
}

/* Static dashed guide circles marking the orbit paths */
.orbit-path {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px dashed var(--border);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.orbit-path-inner {
  width: 190px;
  height: 190px;
}

.orbit-path-outer {
  width: 330px;
  height: 330px;
}

/* Center: profile avatar — fixed, never rotates */
.orbit-profile {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 112px;
  height: 112px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.2;
  padding: 6px;
  box-shadow: var(--shadow-md);
  z-index: 3;
}

.orbit-profile-first {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  opacity: 0.85;
}

.orbit-profile-last {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

/* Rings rotate continuously; each ring's badges counter-rotate to stay upright.
   pointer-events is off here because each ring is a full-size invisible frame —
   without this, the outer ring (stacked on top) would silently swallow hover/click
   for the entire widget area, including the inner ring's badges beneath it. */
.orbit-ring {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.orbit-ring-inner {
  animation: orbit-cw 36s linear infinite;
}

.orbit-ring-outer {
  animation: orbit-ccw 54s linear infinite;
}

.orbit-slot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  transform: rotate(var(--angle)) translateX(var(--radius)) rotate(calc(-1 * var(--angle)));
}

.orbit-ring-inner .orbit-slot {
  --radius: 95px;
}

.orbit-ring-outer .orbit-slot {
  --radius: 165px;
}

.orbit-badge {
  display: block;
}

.orbit-ring-inner .orbit-badge {
  animation: orbit-ccw 36s linear infinite;
}

.orbit-ring-outer .orbit-badge {
  animation: orbit-cw 54s linear infinite;
}

.badge-circle {
  position: relative;
  width: 56px;
  height: 56px;
  margin: -28px 0 0 -28px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--accent-2);
  line-height: 1.1;
  cursor: default;
  pointer-events: auto;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.badge-circle:hover {
  transform: scale(1.18);
  border-color: var(--highlight);
  box-shadow: var(--shadow-md);
  z-index: 5;
}

/* Full technology name, revealed clearly on hover */
.badge-circle::after {
  content: attr(data-name);
  position: absolute;
  bottom: 115%;
  left: 50%;
  transform: translate(-50%, 4px);
  background: var(--text);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  padding: 4px 9px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.badge-circle:hover::after {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* Hovering anywhere on the widget pauses the orbit for a calm, readable moment */
.orbit-widget:hover .orbit-ring,
.orbit-widget:hover .orbit-badge {
  animation-play-state: paused;
}

@keyframes orbit-cw {
  to { transform: rotate(360deg); }
}

@keyframes orbit-ccw {
  to { transform: rotate(-360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .orbit-ring,
  .orbit-badge {
    animation: none;
  }
}

/* ---------- Tech stack strip ---------- */
.tech-strip {
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-alt);
  padding: 26px 0;
  margin-top: 48px;
}

.tech-strip-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.tech-pill {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 7px 14px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.tech-pill:hover {
  color: var(--accent-2);
  border-color: var(--accent);
}

/* ---------- Sections ---------- */
.section {
  padding: 100px 0;
}

.alt-bg {
  background-color: var(--bg-alt);
}

.tag-label {
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--text);
  margin-bottom: 16px;
  max-width: 700px;
}

/* Home overview: slightly larger section headings so summarized sections
   stand out a bit more while scrolling, without changing detail pages. */
.page-home .section-title {
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
}

.section-sub {
  color: var(--text-muted);
  max-width: 600px;
  margin: -6px auto 10px;
}

.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.about-text {
  color: var(--text-muted);
  margin-bottom: 16px;
  max-width: 560px;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 60px;
  align-items: start;
}

.facts-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.facts-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.facts-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.facts-list li:last-child {
  border-bottom: none;
}

.fact-main {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.fact-icon {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--accent-2);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
}

.facts-list span {
  color: var(--text-muted);
}

.facts-list strong {
  color: var(--text);
  font-weight: 600;
  text-align: right;
  flex-shrink: 0;
}

/* ---------- Services / Expertise ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  transition: transform 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  background: var(--card-hover);
}

.service-icon {
  width: 42px;
  height: 42px;
  border-radius: 6px;
  background: rgba(var(--accent-rgb), 0.08);
  border: 1px solid var(--border);
  color: var(--accent-2);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 9px;
  margin-bottom: 18px;
}

.service-card h3 {
  font-size: 1.04rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ---------- Projects ---------- */
.filters {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 36px 0 40px;
}

.filter-btn {
  padding: 9px 18px;
  border: 1px solid var(--border);
  background-color: transparent;
  color: var(--text-muted);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

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

.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 26px;
}

/* Dedicated Projects page: exact 3 / 2 / 1 column layout for the full,
   uniform project set (desktop / tablet / mobile). */
.projects-grid-uniform {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 900px) {
  .projects-grid-uniform {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .projects-grid-uniform {
    grid-template-columns: 1fr;
  }
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

/* Browser-chrome style visual — an original illustrated mark standing in for a
   screenshot, since no real product screenshots are available for this project. */
.mockup-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.mockup-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
}

.mockup-label {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.project-thumb {
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(160deg, var(--bg-alt) 0%, var(--card) 100%);
  border-bottom: 1px solid var(--border);
}

.project-thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(var(--text-rgb), 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--text-rgb), 0.05) 1px, transparent 1px);
  background-size: 22px 22px;
  transition: transform 0.5s ease;
}

.project-card:hover .project-thumb::before {
  transform: scale(1.08);
}

.thumb-icon {
  position: relative;
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: rgba(var(--accent-rgb), 0.08);
  border: 1px solid var(--border);
  color: var(--accent-2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.35s ease;
}

.thumb-icon svg {
  width: 42px;
  height: 42px;
}

.project-card:hover .thumb-icon {
  transform: scale(1.08);
}

/* Real product screenshot (used where actual UI images are available) */
.project-thumb-screenshot img {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.4s ease;
}

.project-card:hover .project-thumb-screenshot img {
  transform: scale(1.04);
}

.project-product-name {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.project-product-name strong {
  color: var(--highlight);
}

.thumb-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  padding: 18px;
  background: linear-gradient(0deg, rgba(var(--bg-rgb), 0.92) 0%, transparent 65%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.project-card:hover .thumb-overlay {
  opacity: 1;
}

.thumb-overlay span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-2);
}

.thumb-overlay svg {
  width: 15px;
  height: 15px;
}

.project-body {
  padding: 26px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 9px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--accent-2);
}

.tag-featured {
  background: var(--highlight);
  border-color: var(--highlight);
  color: var(--on-accent);
}

.project-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.project-body p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.project-stack {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.project-stack span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 4px;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-2);
  font-weight: 600;
  font-size: 0.9rem;
  transition: gap 0.2s ease, color 0.2s ease;
}

.project-link svg {
  width: 15px;
  height: 15px;
  transition: transform 0.25s ease;
}

.project-link:hover {
  color: var(--text);
  gap: 10px;
}

.project-link:hover svg {
  transform: translate(2px, -2px);
}

.empty-msg {
  text-align: center;
  color: var(--text-muted);
  margin-top: 10px;
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  max-width: 720px;
  margin: 50px auto 0;
  padding-left: 50px;
  border-left: 1px solid var(--border);
}

.timeline-item {
  position: relative;
  padding-bottom: 44px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -66px;
  top: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--card);
  border: 2px solid var(--accent);
  color: var(--accent-2);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 7px;
  box-shadow: var(--shadow-sm);
}

.timeline-date {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.timeline-content h3 {
  font-size: 1.06rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.timeline-content p {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 520px;
}

/* ---------- Achievements ---------- */
.stats-section {
  padding: 32px 0 28px;
}

/* Home: tighten the gap into the Reviews teaser right after the stats/CTA */
.reviews-teaser-section {
  padding-top: 28px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
  text-align: center;
}

.stat-card {
  padding: 24px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--card);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text);
  font-family: var(--font-mono);
}

.stat-suffix {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--highlight);
  font-family: var(--font-mono);
}

.stat-card p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 8px;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.contact-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  background: var(--card-hover);
}

.contact-icon {
  width: 24px;
  height: 24px;
  margin-bottom: 4px;
  border-radius: 8px;
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--accent-2);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5px;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.contact-value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text);
  font-size: 0.88rem;
  word-break: break-word;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border-soft);
  padding: 60px 0 0;
}

.footer-columns {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-highlight {
  color: var(--accent-2);
  font-weight: 600;
  font-size: 0.92rem;
  margin-top: 14px;
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 0.86rem;
  margin-top: 10px;
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 22px;
}

.footer-social-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 9px;
  flex-shrink: 0;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.footer-social-icon:hover {
  color: var(--accent-2);
  border-color: var(--accent);
  background: var(--card-hover);
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text);
  margin-bottom: 18px;
}

.footer-col-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col-links a,
.footer-col-links span {
  color: var(--text-muted);
  font-size: 0.86rem;
  transition: color 0.2s ease;
}

.footer-col-links a:hover {
  color: var(--accent-2);
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.4;
  transition: color 0.2s ease;
}

.footer-contact-item svg {
  width: 16px;
  height: 16px;
  color: var(--accent-2);
  flex-shrink: 0;
}

.footer-contact-item:hover {
  color: var(--accent-2);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 20px 0;
  border-top: 1px solid var(--border-soft);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.78rem;
}

.footer-bottom-link {
  color: var(--accent-2);
  font-weight: 600;
  font-size: 0.8rem;
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  bottom: 26px;
  right: 26px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--accent-2);
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, border-color 0.2s ease, background-color 0.2s ease;
  z-index: 400;
}

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

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions,
  .hero-stats {
    justify-content: center;
  }

  .hero-left {
    align-items: center;
    margin: 0 auto 8px;
  }

  .hero-photo {
    width: 220px;
  }

  .hero-photo-actions {
    width: 220px;
  }

  .hero-visual {
    width: 323px;
    margin-top: 20px;
  }

  .orbit-widget {
    transform: scale(0.85);
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-col-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1010px) {
  .nav-menu {
    position: fixed;
    top: var(--navbar-h);
    left: 0;
    width: 100%;
    background: rgba(var(--bg-rgb), 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-soft);
    flex-direction: column;
    align-items: stretch;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, background-color 0.3s ease;
  }

  .nav-menu.active {
    max-height: 420px;
  }

  .nav-links {
    flex-direction: column;
    padding: 10px 6%;
    gap: 2px;
  }

  .nav-link {
    padding: 14px 10px;
    border-bottom: 1px solid var(--border);
  }

  .nav-indicator {
    display: none;
  }

  .nav-cta {
    display: none;
  }

  .nav-actions {
    gap: 10px;
  }

  .menu-toggle {
    display: flex;
  }
}

@media (max-width: 600px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-stats {
    gap: 20px;
  }

  .hero-photo {
    width: 180px;
  }

  .hero-photo-actions {
    width: 180px;
  }

  .hero-visual {
    width: 247px;
  }

  .orbit-widget {
    transform: scale(0.65);
  }

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

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

  .section {
    padding: 70px 0;
  }

  .contact-cards {
    grid-template-columns: 1fr;
  }

  .services-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Nav "Reviews" button (matches .nav-link exactly, just resets button chrome) ---------- */
.nav-link-btn {
  background: none;
  border: none;
  cursor: pointer;
}

/* ---------- Reviews modal ---------- */
.reviews-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(var(--text-rgb), 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.reviews-overlay[hidden] {
  display: none;
}

.reviews-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.reviews-panel {
  position: relative;
  width: 100%;
  max-width: 560px;
  max-height: 85vh;
  overflow-y: auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 30px;
  transform: scale(0.94) translateY(10px);
  opacity: 0;
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.25s ease;
}

.reviews-overlay.visible .reviews-panel {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.reviews-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.reviews-head h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
}

.reviews-sub {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.reviews-close {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.reviews-close:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--card-hover);
}

.reviews-track-wrap {
  overflow: hidden;
}

.reviews-track {
  display: flex;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.review-card {
  flex: 0 0 100%;
  min-width: 0;
  padding: 4px 2px;
}

.review-stars {
  color: var(--highlight);
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.review-project {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--accent-2);
  margin-bottom: 10px;
}

.review-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.review-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.review-stack span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 4px 9px;
  border-radius: 4px;
}

.review-author {
  font-weight: 700;
  color: var(--text);
  font-size: 0.92rem;
}

.review-author span {
  font-weight: 400;
  color: var(--text-muted);
}

.reviews-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 22px;
}

.reviews-nav-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.reviews-nav-btn:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  background: var(--card-hover);
}

.reviews-counter {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  min-width: 40px;
  text-align: center;
}

.reviews-source-link {
  display: block;
  text-align: center;
  margin-top: 18px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-2);
}

@media (max-width: 600px) {
  .reviews-panel {
    padding: 22px;
  }

  .reviews-head h2 {
    font-size: 1.2rem;
  }
}

/* ==========================================================
   Portfolio evolution — Persona / Work / Architecture / Experience
   All rules below reuse existing tokens (--card, --border, --accent,
   --accent-2, --highlight, --text, --text-muted, --shadow-*) — no new colors.
   ========================================================== */

/* ---------- Skills: grouped breakdown pills (reuses .service-card look) ---------- */
.skill-group-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.skill-group-list span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 4px;
}

/* ---------- Persona: stacked sub-sections ---------- */
.persona-block {
  margin-top: 70px;
}

.persona-think {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  font-size: 1.02rem;
}

/* ---------- Persona: How I Work process stepper ---------- */
.process-stepper {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 36px;
}

.process-step {
  flex: 1 1 150px;
  max-width: 190px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 14px;
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: border-color 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.process-step:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.process-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent-2), #22d3ee);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.process-label {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text);
  font-size: 0.98rem;
}

.process-detail {
  font-size: 0.82rem;
  color: var(--text-muted);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.3s ease, opacity 0.25s ease, margin-top 0.3s ease;
}

.process-step.open .process-detail {
  max-height: 120px;
  opacity: 1;
  margin-top: 4px;
}

/* ---------- Work: project link row (case-study button + secondary real link) ---------- */
.project-link-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.case-study-trigger {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  cursor: pointer;
}

.project-link-secondary {
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.project-link-secondary:hover {
  color: var(--accent-2);
}

/* ---------- Work: additional (supporting) project cards ---------- */
.more-work-head {
  margin-top: 60px;
  margin-bottom: 24px;
}

.more-work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.more-work-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.more-work-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.more-work-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.more-work-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.more-work-card .project-stack {
  margin-bottom: 14px;
}

.more-work-card a {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-2);
}

/* ---------- Architecture flow diagram ---------- */
.arch-flow {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 44px;
}

.arch-node {
  flex: 1 1 150px;
  max-width: 190px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 16px;
  text-align: center;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.arch-node:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.arch-icon {
  width: 42px;
  height: 42px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--accent-2);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 9px;
}

.arch-node h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.arch-node p {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.arch-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--highlight);
  font-size: 1.2rem;
  flex: 0 0 auto;
}

.arch-callouts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 44px;
}

.arch-callout {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.arch-callout:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

/* ---------- Reviews teaser strip ---------- */
.teaser-viewport {
  max-width: 640px;
  margin: 36px auto 16px;
  overflow: hidden;
}

.teaser-dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-bottom: 30px;
}

.teaser-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: background-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.teaser-dot:hover {
  background: var(--accent-2);
}

.teaser-dot.active {
  background: var(--accent-2);
  transform: scale(1.3);
}

.teaser-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.65, 0, 0.35, 1);
}

.teaser-quote {
  flex: 0 0 100%;
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.teaser-quote:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.teaser-quote p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  margin: 12px 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.teaser-quote cite {
  font-style: normal;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.center-btn {
  display: flex;
  margin: 0 auto;
}

/* ---------- Case study modal (reuses .reviews-overlay / .reviews-panel chrome) ---------- */
.case-panel {
  max-width: 640px;
  text-align: left;
}

/* ---------- Chat modal (reuses .reviews-overlay / .reviews-panel chrome) ---------- */
.chat-panel {
  max-width: 460px;
  text-align: left;
}

.chat-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.chat-textarea {
  width: 100%;
  resize: vertical;
  min-height: 110px;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.6;
}

.chat-textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.chat-send-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

.chat-send-btn {
  justify-content: center;
}

.chat-send-btn svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.chat-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
}

.chat-note.chat-note-warning {
  color: var(--highlight);
}

.case-image {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 20px;
}

.case-section {
  margin-bottom: 20px;
}

.case-section:last-child {
  margin-bottom: 0;
}

.case-section h3 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-2);
  margin-bottom: 8px;
}

.case-section p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.case-section ul {
  padding-left: 2px;
}

.case-section ul li {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  padding: 3px 0;
}

.case-section ul li::before {
  content: "\2192";
  color: var(--accent);
  margin-right: 8px;
}

.case-tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.case-tech-list span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 4px;
}

/* ---------- Responsive: new sections ---------- */
@media (max-width: 800px) {
  .arch-flow {
    flex-direction: column;
    align-items: stretch;
  }

  .arch-node {
    max-width: none;
  }

  .arch-arrow {
    transform: rotate(90deg);
  }

  .process-stepper {
    flex-direction: column;
    align-items: stretch;
  }

  .process-step {
    max-width: none;
    align-items: flex-start;
    text-align: left;
  }

  .process-arrow {
    display: none;
  }
}

@media (max-width: 600px) {
  .persona-block {
    margin-top: 50px;
  }

  .more-work-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================
   Two-level navigation: Home overview + detail pages
   ========================================================== */

/* ---------- Detail pages ---------- */
.page-detail {
  padding-top: var(--navbar-h);
  min-height: 70vh;
}

.page-detail-header {
  padding: 26px 0 0;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  transition: color 0.2s ease;
}

.back-link svg {
  width: 15px;
  height: 15px;
}

.back-link:hover {
  color: var(--accent-2);
}

.page-detail-header + .section {
  padding-top: 32px;
}

/* ---------- Home teasers ---------- */
.section-compact {
  padding: 64px 0 32px;
}

.persona-teaser {
  max-width: 720px;
  text-align: center;
}

.persona-teaser-text {
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.teaser-cta-row {
  display: flex;
  justify-content: center;
  margin-top: 30px;
}

.tech-strip .teaser-cta-row {
  margin-top: 22px;
}

/* ---------- Work: additional-project card thumbnails ---------- */
.more-work-card {
  padding: 0;
  overflow: hidden;
}

.more-work-thumb {
  position: relative;
  height: 140px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  background: none;
  padding: 0;
  border-left: none;
  border-right: none;
  border-top: none;
  width: 100%;
  display: block;
}

.more-work-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.4s ease;
}

.more-work-card:hover .more-work-thumb img {
  transform: scale(1.05);
}

.more-work-body {
  padding: 20px 22px 22px;
}

.more-work-body h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.more-work-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.more-work-body .project-stack {
  margin-bottom: 14px;
}

/* ---------- Case study modal: image gallery ---------- */
.case-gallery {
  margin-bottom: 20px;
}

.case-thumbs {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
}

.case-thumb {
  flex: 0 0 72px;
  height: 50px;
  border-radius: 6px;
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  opacity: 0.65;
  padding: 0;
  background: none;
  transition: opacity 0.2s ease, border-color 0.2s ease;
}

.case-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-thumb:hover {
  opacity: 0.9;
}

.case-thumb.active {
  opacity: 1;
  border-color: var(--accent);
}

@media (max-width: 600px) {
  .more-work-thumb {
    height: 160px;
  }
}

/* ==========================================================
   Dark mode: premium tech glow treatment
   Deep navy + electric blue + cyan accents, additive only —
   light mode and all layout/structure are untouched.
   ========================================================== */
:root[data-theme="dark"] body {
  background-image:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(59, 130, 246, 0.10), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 15%, rgba(34, 211, 238, 0.07), transparent 55%);
  background-repeat: no-repeat;
  background-attachment: fixed;
}

:root[data-theme="dark"] .hero-glow {
  background: radial-gradient(circle, rgba(59, 130, 246, 0.22), rgba(34, 211, 238, 0.08) 45%, transparent 70%);
}

:root[data-theme="dark"] .orbit-profile {
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.4), 0 0 36px rgba(59, 130, 246, 0.45), var(--shadow-md);
}

:root[data-theme="dark"] .badge-circle {
  box-shadow: 0 0 14px rgba(59, 130, 246, 0.25), var(--shadow-sm);
}

:root[data-theme="dark"] .badge-circle:hover {
  box-shadow: 0 0 22px rgba(34, 211, 238, 0.45), var(--shadow-md);
}

:root[data-theme="dark"] .btn-primary {
  box-shadow: 0 0 22px rgba(59, 130, 246, 0.35);
}

:root[data-theme="dark"] .btn-primary:hover {
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
}

:root[data-theme="dark"] .nav-indicator {
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.7);
}

:root[data-theme="dark"] .stat-number {
  text-shadow: 0 0 18px rgba(59, 130, 246, 0.35);
}

:root[data-theme="dark"] .alt-bg {
  background-image:
    linear-gradient(180deg, rgba(59, 130, 246, 0.04), transparent 40%),
    linear-gradient(90deg, rgba(59, 130, 246, 0.10), transparent 240px),
    linear-gradient(270deg, rgba(34, 211, 238, 0.09), transparent 240px);
  background-repeat: no-repeat, no-repeat, no-repeat;
  background-position: top, left top, right top;
}

/* ---------- Side gradients on every Home overview section ---------- */
:root[data-theme="dark"] [data-spy]:not(.alt-bg) {
  background-image:
    linear-gradient(90deg, rgba(59, 130, 246, 0.10), transparent 240px),
    linear-gradient(270deg, rgba(34, 211, 238, 0.09), transparent 240px);
  background-repeat: no-repeat, no-repeat;
  background-position: left top, right top;
}

@media (max-width: 900px) {
  :root[data-theme="dark"] [data-spy]:not(.alt-bg) {
    background-image: none;
  }

  :root[data-theme="dark"] .alt-bg {
    background-image: linear-gradient(180deg, rgba(59, 130, 246, 0.04), transparent 40%);
  }
}

/* ---------- Hover lift + glow on interactive cards, boxes, and buttons ---------- */
:root[data-theme="dark"] .btn-outline:hover {
  box-shadow: 0 0 18px rgba(59, 130, 246, 0.28);
}

:root[data-theme="dark"] .tech-pill:hover {
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.3);
}

:root[data-theme="dark"] .skill-group-list span:hover {
  color: var(--accent-2);
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.3);
}

:root[data-theme="dark"] .contact-card:hover {
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.22), var(--shadow-sm);
}

.stat-card {
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

:root[data-theme="dark"] .stat-card:hover {
  box-shadow: 0 0 22px rgba(59, 130, 246, 0.25), var(--shadow-sm);
}

:root[data-theme="dark"] .section-title:hover,
:root[data-theme="dark"] .hero-title:hover {
  text-shadow: 0 0 20px rgba(59, 130, 246, 0.45);
}

:root[data-theme="dark"] .facts-card {
  background-image: linear-gradient(160deg, rgba(59, 130, 246, 0.10), rgba(34, 211, 238, 0.04) 60%, transparent);
  box-shadow: 0 0 16px rgba(59, 130, 246, 0.12), var(--shadow-sm);
}

:root[data-theme="dark"] .facts-card:hover {
  box-shadow: 0 0 24px rgba(59, 130, 246, 0.3), var(--shadow-md);
}

:root[data-theme="dark"] .teaser-quote:hover {
  box-shadow: 0 0 22px rgba(59, 130, 246, 0.22), 0 0 40px rgba(34, 211, 238, 0.08), var(--shadow-sm);
}

:root[data-theme="dark"] .process-arrow {
  filter: drop-shadow(0 0 6px rgba(59, 130, 246, 0.5));
}

:root[data-theme="dark"] .teaser-dot.active {
  box-shadow: 0 0 8px rgba(59, 130, 246, 0.7);
}

:root[data-theme="dark"] .arch-callout {
  background-image: linear-gradient(160deg, rgba(59, 130, 246, 0.10), rgba(34, 211, 238, 0.04) 60%, transparent);
}

:root[data-theme="dark"] .arch-callout:hover {
  box-shadow: 0 0 22px rgba(59, 130, 246, 0.25), var(--shadow-sm);
}