/* ═══════════════════════════════════════════════════════════════════════
   ComesLab · style.css
   Author : Attilio Comes / ComesLab
   Theme  : "Deep-Sea Electronics Lab"
   ═══════════════════════════════════════════════════════════════════════ */

/* ── 1. CUSTOM PROPERTIES (dark mode, default) ───────────────────────── */
:root {
  /* Core palette */
  --clr-bg-base       : #080d18;
  --clr-bg-surface    : #0d1525;
  --clr-bg-elevated   : #111d32;
  --clr-bg-lab        : #0a1220;
  --clr-bg-card       : #0f1b2e;

  /* Accents */
  --clr-accent-blue   : #00d4ff;
  --clr-accent-blue-dim: rgba(0, 212, 255, 0.15);
  --clr-accent-blue-glow: rgba(0, 212, 255, 0.08);
  --clr-accent-amber  : #f59e0b;
  --clr-accent-amber-dim: rgba(245, 158, 11, 0.15);

  /* Text */
  --clr-text-primary  : #e8edf5;
  --clr-text-secondary: #8fa3be;
  --clr-text-muted    : #4a6080;
  --clr-text-code     : #00d4ff;

  /* Borders */
  --clr-border        : rgba(0, 212, 255, 0.12);
  --clr-border-subtle : rgba(255, 255, 255, 0.05);

  /* Typography */
  --font-display      : 'Syne', sans-serif;
  --font-serif        : 'Playfair Display', Georgia, serif;
  --font-mono         : 'JetBrains Mono', monospace;
  --font-body         : 'Inter', sans-serif;

  /* Spacing scale (8pt grid) */
  --sp-1 : 0.5rem;
  --sp-2 : 1rem;
  --sp-3 : 1.5rem;
  --sp-4 : 2rem;
  --sp-5 : 2.5rem;
  --sp-6 : 3rem;
  --sp-8 : 4rem;
  --sp-10: 5rem;
  --sp-12: 6rem;
  --sp-16: 8rem;

  /* Radii */
  --r-sm  : 4px;
  --r-md  : 8px;
  --r-lg  : 16px;
  --r-xl  : 24px;
  --r-full: 9999px;

  /* Shadows */
  --shadow-glow-blue  : 0 0 30px rgba(0, 212, 255, 0.18);
  --shadow-glow-amber : 0 0 30px rgba(245, 158, 11, 0.18);
  --shadow-card       : 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-card-hover : 0 8px 40px rgba(0, 0, 0, 0.6), 0 0 20px rgba(0, 212, 255, 0.12);

  /* Transitions */
  --tr-fast    : 0.18s ease;
  --tr-normal  : 0.3s ease;
  --tr-slow    : 0.6s ease;

  /* Layout */
  --container-max : 1200px;
  --nav-height    : 72px;
}

/* ── 1b. LIGHT MODE overrides ─────────────────────────────────────────── */
[data-theme="light"] {
  --clr-bg-base       : #B4AEBB;
  --clr-bg-surface    : #ffffff;
  --clr-bg-elevated   : #837891;
  --clr-bg-lab        : #837891;
  --clr-bg-card       : #ffffff;
  --clr-accent-blue   : #0077aa;
  --clr-accent-blue-dim: rgba(0, 119, 170, 0.1);
  --clr-accent-blue-glow: rgba(0, 119, 170, 0.06);
  --clr-accent-amber  : #c97d00;
  --clr-text-primary  : #0d1525;
  --clr-text-secondary: #3a5070;
  --clr-text-muted    : #546480;
  --clr-text-code     : #0077aa;
  --clr-border        : rgba(0, 119, 170, 0.18);
  --clr-border-subtle : rgba(0, 0, 0, 0.06);
  --shadow-card       : 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-card-hover : 0 8px 40px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .lab__badge {
  color: #0035c9;
  background: rgba(0, 53, 201, 0.08);
  border-color: rgba(0, 53, 201, 0.25);
}
[data-theme="light"] .lab__badge-dot {
  background: #0035c9;
}

/* ── 2. RESET & BASE ──────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--clr-text-primary);
  background-color: var(--clr-bg-base);
  overflow-x: hidden;
  /* Subtle noise texture overlay */
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
}

img { max-width: 100%; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
button { cursor: pointer; font-family: inherit; }

/* ── 3. UTILITY CLASSES ─────────────────────────────────────────────── */
.mono {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.container {
  width: min(var(--container-max), 100% - 2 * var(--sp-4));
  margin-inline: auto;
}

.section-pad {
  padding-block: var(--sp-12);
}

.section-label {
  color: var(--clr-accent-blue);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}

.section-heading {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--clr-text-primary);
  line-height: 1.1;
  margin-bottom: var(--sp-3);
}

.section-header {
  margin-bottom: var(--sp-6);
}

/* ── 4. SCROLL REVEAL ────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--tr-slow), transform var(--tr-slow);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal--delay-1 { transition-delay: 0.12s; }
.reveal--delay-2 { transition-delay: 0.24s; }
.reveal--delay-3 { transition-delay: 0.36s; }

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

/* ── 5. CURSOR FOLLOWER ──────────────────────────────────────────────── */
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: var(--r-full);
  background-color: var(--clr-accent-blue);
  pointer-events: none;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.2s, transform 0.08s linear, width 0.2s, height 0.2s;
  transform: translate(-50%, -50%);
  mix-blend-mode: screen;
}
.cursor-dot.is-active { opacity: 0.7; }
.cursor-dot.is-hovered {
  width: 28px;
  height: 28px;
  opacity: 0.3;
}

@media (pointer: coarse) {
  .cursor-dot { display: none; }
}

/* ── 6. BUTTONS ──────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 0.7em 1.5em;
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: all var(--tr-normal);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 2px solid var(--clr-accent-blue);
  outline-offset: 3px;
}

.btn--primary {
  background: var(--clr-accent-blue);
  color: var(--clr-bg-base);
  border-color: var(--clr-accent-blue);
}
.btn--primary:hover {
  background: transparent;
  color: var(--clr-accent-blue);
  box-shadow: var(--shadow-glow-blue);
}

.btn--ghost {
  background: transparent;
  color: var(--clr-accent-blue);
  border-color: var(--clr-border);
}
.btn--ghost:hover {
  border-color: var(--clr-accent-blue);
  box-shadow: var(--shadow-glow-blue);
}

.btn--sm { font-size: 0.78rem; padding: 0.5em 1.1em; }
.btn--xs { font-size: 0.72rem; padding: 0.35em 0.9em; }

.btn--disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* ── 7. BADGES / TAGS ───────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 0.2em 0.7em;
  background: var(--clr-accent-blue-dim);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-full);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--clr-accent-blue);
  letter-spacing: 0.05em;
}

.skill-tag {
  display: inline-block;
  padding: 0.2em 0.65em;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-border-subtle);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--clr-text-secondary);
  transition: all var(--tr-fast);
}
.skill-tag:hover {
  border-color: var(--clr-accent-blue);
  color: var(--clr-accent-blue);
  background: var(--clr-accent-blue-dim);
}

/* ── 8. NAVBAR ───────────────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-height);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  background: rgba(8, 13, 24, 0.75);
  border-bottom: 1px solid var(--clr-border-subtle);
  transition: background var(--tr-normal), box-shadow var(--tr-normal);
}
.navbar.is-scrolled {
  background: rgba(8, 13, 24, 0.92);
  box-shadow: 0 1px 0 var(--clr-border);
}

[data-theme="light"] .navbar {
  background: rgba(240, 244, 250, 0.85);
}
[data-theme="light"] .navbar.is-scrolled {
  background: rgba(240, 244, 250, 0.95);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: min(var(--container-max), 100% - 2 * var(--sp-4));
  margin-inline: auto;
}

.navbar__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--clr-text-primary);
  transition: color var(--tr-fast);
}
.navbar__logo:hover { color: var(--clr-accent-blue); }
.navbar__logo:focus-visible {
  outline: 2px solid var(--clr-accent-blue);
  outline-offset: 4px;
}

.navbar__logo-bracket {
  color: var(--clr-accent-blue);
  font-weight: 300;
}

.navbar__links {
  display: flex;
  gap: var(--sp-4);
  align-items: center;
}

.navbar__link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--clr-text-secondary);
  letter-spacing: 0.06em;
  transition: color var(--tr-fast);
  position: relative;
  padding-block: 4px;
}
.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--clr-accent-blue);
  transition: width var(--tr-normal);
}
.navbar__link:hover,
.navbar__link.is-active {
  color: var(--clr-accent-blue);
}
.navbar__link.is-active::after,
.navbar__link:hover::after {
  width: 100%;
}
.navbar__link:focus-visible {
  outline: 2px solid var(--clr-accent-blue);
  outline-offset: 4px;
  border-radius: var(--r-sm);
}

.navbar__controls {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--clr-border);
  border-radius: var(--r-sm);
  color: var(--clr-text-secondary);
  transition: all var(--tr-fast);
}
.theme-toggle:hover {
  border-color: var(--clr-accent-amber);
  color: var(--clr-accent-amber);
}
.theme-toggle:focus-visible {
  outline: 2px solid var(--clr-accent-blue);
  outline-offset: 3px;
}
.icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun  { display: block; }

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--clr-border);
  border-radius: var(--r-sm);
  padding: 8px;
}
.navbar__hamburger-line {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--clr-text-secondary);
  border-radius: var(--r-full);
  transition: all var(--tr-normal);
}
.navbar__hamburger.is-open .navbar__hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.navbar__hamburger.is-open .navbar__hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.navbar__hamburger.is-open .navbar__hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── 9. BACK TO TOP ─────────────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: var(--sp-4);
  right: var(--sp-4);
  z-index: 800;
  width: 44px;
  height: 44px;
  background: var(--clr-bg-elevated);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-sm);
  color: var(--clr-accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: all var(--tr-normal);
}
.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--clr-accent-blue);
  color: var(--clr-bg-base);
  box-shadow: var(--shadow-glow-blue);
}
.back-to-top:focus-visible {
  outline: 2px solid var(--clr-accent-blue);
  outline-offset: 3px;
}

/* ── 10. HERO ────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--clr-bg-base);
}

/* Circuit grid background */
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__grid {
  position: absolute;
  inset: 0;
}
.grid-line {
  color: rgba(0, 212, 255, 0.08);
}
.grid-dot {
  fill: rgba(0, 212, 255, 0.18);
}
[data-theme="light"] .grid-line {
  color: rgba(0, 80, 140, 0.15);
}
[data-theme="light"] .grid-dot {
  fill: rgba(0, 80, 140, 0.30);
}

/* Pulse canvas */
.hero__pulses {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* Glow blobs */
.hero__blob {
  position: absolute;
  border-radius: var(--r-full);
  filter: blur(80px);
  pointer-events: none;
}
.hero__blob--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.12) 0%, transparent 70%);
  top: -150px;
  right: -100px;
  animation: blobFloat 8s ease-in-out infinite;
}
.hero__blob--2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
  bottom: 0;
  left: -100px;
  animation: blobFloat 12s ease-in-out infinite reverse;
}
@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -20px) scale(1.05); }
  66%       { transform: translate(-15px, 10px) scale(0.97); }
}

.hero__content {
  position: relative;
  z-index: 1;
  width: min(var(--container-max), 100% - 2 * var(--sp-4));
  margin-inline: auto;
  padding-block: var(--sp-12);
}

.hero__pre-label {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  color: var(--clr-text-muted);
  margin-bottom: var(--sp-3);
  animation: fadeInUp 0.8s ease 0.2s both;
}
.hero__pre-dot {
  width: 8px;
  height: 8px;
  background: var(--clr-accent-blue);
  border-radius: var(--r-full);
  animation: pulse 2s ease infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0,212,255,0.4); }
  50%       { opacity: 0.7; box-shadow: 0 0 0 6px rgba(0,212,255,0); }
}

.hero__title {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  line-height: 1.05;
  color: var(--clr-text-primary);
  margin-bottom: var(--sp-3);
  animation: fadeInUp 0.8s ease 0.35s both;
  /* slight letter tightening — classic serif bold benefits from negative tracking */
  letter-spacing: -0.015em;
}
/* Name on a single line */
.hero__title-name {
  display: inline-block;
  /* gentle gradient fill, same weight as original */
  background: linear-gradient(150deg, #ffffff 35%, rgba(190, 235, 255, 0.9) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--clr-text-primary); /* fallback */
}
.hero__title-accent {
  display: block;
  margin-top: 0.3em;
  color: var(--clr-accent-blue);
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: clamp(0.78rem, 1.3vw, 1rem);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0.85;
}

.hero__subtitle {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--clr-text-secondary);
  margin-bottom: var(--sp-5);
  display: flex;
  align-items: center;
  gap: 0;
  animation: fadeInUp 0.8s ease 0.5s both;
}
.hero__typing-prefix {
  color: var(--clr-accent-amber);
  margin-right: 4px;
}
.hero__typing {
  color: var(--clr-text-primary);
}
.hero__cursor {
  color: var(--clr-accent-blue);
  animation: blink 1s step-end infinite;
  margin-left: 1px;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.hero__cta-group {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
  margin-bottom: var(--sp-5);
  animation: fadeInUp 0.8s ease 0.65s both;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
  animation: fadeInUp 0.8s ease 0.8s both;
}

/* Scroll hint */
.hero__scroll-hint {
  position: absolute;
  bottom: var(--sp-4);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-1);
  color: var(--clr-text-muted);
  font-size: 0.7rem;
  animation: fadeInUp 0.8s ease 1.2s both;
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--clr-accent-blue), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── 11. ABOUT ───────────────────────────────────────────────────────── */
.about {
  background-color: var(--clr-bg-surface);
}
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--sp-10);
  align-items: center;
}

.about__image-wrap {
  position: relative;
}
.about__image-frame {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  aspect-ratio: 3/4;
  background: var(--clr-bg-elevated);
  position: relative;
}
.about__image-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.08) 0%, transparent 60%);
  z-index: 1;
  pointer-events: none;
}
.about__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}
.about__image-placeholder {
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  color: var(--clr-text-muted);
}
.about__image-tag {
  position: absolute;
  bottom: -16px;
  right: -16px;
  background: var(--clr-bg-elevated);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-sm);
  padding: var(--sp-1) var(--sp-2);
  font-size: 0.72rem;
  color: var(--clr-text-secondary);
  display: flex;
  gap: 6px;
}
.tag-key  { color: var(--clr-accent-amber); }
.tag-sep  { color: var(--clr-text-muted); }
.tag-val  { color: var(--clr-accent-blue); }

[data-theme="light"] .about__image-tag {
  background: var(--clr-bg-surface);
  border-color: var(--clr-border);
  box-shadow: var(--shadow-card);
}

.about__body {
  color: var(--clr-text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--sp-4);
  line-height: 1.75;
}
.about__body strong { color: var(--clr-text-primary); font-weight: 600; }

.about__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}
.about__list-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
  color: var(--clr-text-secondary);
  font-size: 0.9rem;
}
.about__list-icon {
  flex-shrink: 0;
  font-size: 1rem;
  margin-top: 2px;
}

/* ── 12. SKILLS ──────────────────────────────────────────────────────── */
.skills {
  background-color: var(--clr-bg-base);
}
.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
}

.skill-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border-subtle);
  border-radius: var(--r-lg);
  padding: var(--sp-4);
  transition: border-color var(--tr-normal), box-shadow var(--tr-normal), transform var(--tr-normal);
}
.skill-card:hover {
  border-color: var(--clr-border);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.skill-card__icon {
  margin-bottom: var(--sp-3);
}
.skill-card__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--clr-text-primary);
  margin-bottom: var(--sp-2);
}
.skill-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
}

/* ── 13. PROJECTS ────────────────────────────────────────────────────── */
.projects {
  background-color: var(--clr-bg-surface);
}
.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}
.projects__cta {
  text-align: center;
}

.card--project {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border-subtle);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color var(--tr-normal), box-shadow var(--tr-normal), transform var(--tr-normal);
  display: flex;
  flex-direction: column;
}
.card--project:hover {
  border-color: var(--clr-border);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-6px);
}
.card--project--locked {
  opacity: 0.8;
}
.card--project--locked:hover {
  transform: translateY(-2px);
}

/* Project image area with skeleton shimmer */
.card--project__image-wrap {
  position: relative;
}
.card--project__image {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--clr-bg-elevated);
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: var(--sp-2);
  overflow: hidden;
}
/* Skeleton shimmer animation */
.card--project__image.skeleton::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(0, 212, 255, 0.06) 50%,
    transparent 100%
  );
  animation: shimmer 2.4s ease-in-out infinite;
  background-size: 200% 100%;
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.card--project__image--dark {
  background: var(--clr-bg-base);
}
.card--project__image-label {
  position: relative;
  z-index: 1;
  color: var(--clr-text-muted);
  font-size: 0.68rem;
}
.card--project__lock {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.card--project__badge {
  position: absolute;
  top: var(--sp-2);
  right: var(--sp-2);
  padding: 0.15em 0.6em;
  background: rgba(0, 212, 255, 0.15);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--r-full);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--clr-accent-blue);
}
.card--project__badge--amber {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.3);
  color: var(--clr-accent-amber);
}

.card--project__body {
  padding: var(--sp-3);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  flex: 1;
}
.card--project__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--clr-text-primary);
}
.card--project__desc {
  font-size: 0.85rem;
  color: var(--clr-text-secondary);
  line-height: 1.6;
  flex: 1;
}
.card--project__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.card--project__actions {
  margin-top: auto;
  padding-top: var(--sp-2);
}

/* ── 14. LAB ─────────────────────────────────────────────────────────── */
.lab {
  background-color: var(--clr-bg-lab);
  border-top: 1px solid var(--clr-border-subtle);
  border-bottom: 1px solid var(--clr-border-subtle);
  position: relative;
  overflow: hidden;
}
.lab::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(245, 158, 11, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.lab__inner { position: relative; z-index: 1; }

.lab__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-8);
  margin-block: var(--sp-6);
  align-items: start;
}

.lab__body {
  color: var(--clr-text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: var(--sp-3);
}
.lab__body strong { color: var(--clr-text-primary); }

.lab__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 0.4em 0.9em;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: var(--r-full);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--clr-accent-amber);
  margin-bottom: var(--sp-3);
}
.lab__badge-dot {
  width: 7px;
  height: 7px;
  background: var(--clr-accent-amber);
  border-radius: var(--r-full);
  animation: pulse 2s ease infinite;
}

.lab__address {
  color: var(--clr-text-muted);
  font-style: normal;
  font-size: 0.8rem;
  line-height: 1.8;
}
.lab__address a {
  color: var(--clr-accent-blue);
  transition: opacity var(--tr-fast);
}
.lab__address a:hover { opacity: 0.75; }
.lab__address a:focus-visible {
  outline: 2px solid var(--clr-accent-blue);
  outline-offset: 2px;
  border-radius: 2px;
}

.lab__brands-label {
  color: var(--clr-text-muted);
  margin-bottom: var(--sp-3);
}
.lab__brands-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2);
}
.lab__brand-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border-subtle);
  border-radius: var(--r-md);
  padding: var(--sp-3);
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color var(--tr-normal);
}
.lab__brand-card:hover { border-color: var(--clr-accent-amber); }
.lab__brand-card--past { opacity: 0.55; }
.lab__brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--clr-text-primary);
}
.lab__brand-sub {
  color: var(--clr-text-muted);
  font-size: 0.7rem;
}

.lab__services {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--sp-2);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--clr-border-subtle);
}
.lab__service-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-2);
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border-subtle);
  border-radius: var(--r-md);
  text-align: center;
  font-size: 0.78rem;
  color: var(--clr-text-secondary);
  transition: border-color var(--tr-fast);
}
.lab__service-item:hover { border-color: var(--clr-accent-amber); }
.lab__service-icon { font-size: 1.4rem; }

/* ── 15. CERTIFICATIONS ──────────────────────────────────────────────── */
.certifications {
  background-color: var(--clr-bg-base);
}
.certs__strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--sp-3);
}

.cert-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border-subtle);
  border-radius: var(--r-lg);
  padding: var(--sp-3);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  transition: border-color var(--tr-normal), box-shadow var(--tr-normal), transform var(--tr-normal);
}
.cert-card:hover {
  border-color: var(--clr-border);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}
.cert-card--wip { opacity: 0.6; }

.cert-card__icon { flex-shrink: 0; }
.cert-card__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--clr-text-primary);
  line-height: 1.3;
}
.cert-card__issuer {
  color: var(--clr-text-muted);
  font-size: 0.68rem;
  line-height: 1.5;
}
.cert-card__year {
  color: var(--clr-accent-amber);
  font-size: 0.72rem;
}

/* ── 16. CONTACT ─────────────────────────────────────────────────────── */
.contact {
  background-color: var(--clr-bg-surface);
  position: relative;
}
.contact__card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  max-width: 900px;
  margin-inline: auto;
  position: relative;
  overflow: hidden;
}
.contact__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--clr-accent-blue), var(--clr-accent-amber), transparent);
}

.contact__header {
  text-align: center;
  margin-bottom: var(--sp-6);
}
.contact__sub {
  color: var(--clr-text-secondary);
  font-size: 0.95rem;
  max-width: 40ch;
  margin-inline: auto;
}

.contact__layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--sp-6);
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}
.contact__link {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  color: var(--clr-text-secondary);
  font-size: 0.88rem;
  transition: color var(--tr-fast);
  padding: var(--sp-2);
  border: 1px solid transparent;
  border-radius: var(--r-md);
}
.contact__link:hover {
  color: var(--clr-accent-blue);
  border-color: var(--clr-border);
  background: var(--clr-accent-blue-dim);
}
.contact__link:focus-visible {
  outline: 2px solid var(--clr-accent-blue);
  outline-offset: 2px;
}

/* Contact form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}
.form__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form__label {
  color: var(--clr-text-muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}
.form__input {
  background: var(--clr-bg-elevated);
  border: 1px solid var(--clr-border-subtle);
  border-radius: var(--r-sm);
  padding: 0.65em 0.9em;
  color: var(--clr-text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  width: 100%;
  transition: border-color var(--tr-fast), box-shadow var(--tr-fast);
}
.form__input::placeholder { color: var(--clr-text-muted); }
.form__input:focus {
  outline: none;
  border-color: var(--clr-accent-blue);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}
.form__input:focus-visible {
  outline: none;
  border-color: var(--clr-accent-blue);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}
.form__input.is-invalid {
  border-color: #ef4444;
}
.form__textarea {
  resize: vertical;
  min-height: 100px;
}
.form__error {
  color: #ef4444;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  min-height: 1em;
}

/* Toast */
.toast {
  position: fixed;
  bottom: var(--sp-6);
  left: 50%;
  transform: translateX(-50%) translateY(calc(100% + 2rem));
  background: var(--clr-bg-elevated);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--r-full);
  padding: 0.7em 1.4em;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--clr-accent-blue);
  box-shadow: var(--shadow-glow-blue);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.4s ease;
  opacity: 0;
  z-index: 2000;
}
.toast.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}
.toast__icon { color: #22c55e; }

/* ── 17. FOOTER ──────────────────────────────────────────────────────── */
.footer {
  background: var(--clr-bg-base);
  border-top: 1px solid var(--clr-border-subtle);
  padding-block: var(--sp-4);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--sp-4);
}
.footer__socials { justify-self: center; }
.footer__dev     { justify-self: end; color: var(--clr-text-muted); font-size: 0.72rem; }
.footer__copy {
  color: var(--clr-text-muted);
  font-size: 0.72rem;
}
.footer__socials {
  display: flex;
  gap: var(--sp-2);
}
.footer__social-link {
  color: var(--clr-text-muted);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--clr-border-subtle);
  border-radius: var(--r-sm);
  transition: all var(--tr-fast);
}
.footer__social-link:hover {
  color: var(--clr-accent-blue);
  border-color: var(--clr-border);
}
.footer__social-link:focus-visible {
  outline: 2px solid var(--clr-accent-blue);
  outline-offset: 3px;
}

/* ── 18. RESPONSIVE — TABLET (768px) ────────────────────────────────── */
@media (max-width: 900px) {
  .skills__grid        { grid-template-columns: repeat(2, 1fr); }
  .projects__grid      { grid-template-columns: repeat(2, 1fr); }
  .certs__strip        { grid-template-columns: repeat(3, 1fr); }
  .lab__grid           { grid-template-columns: 1fr; gap: var(--sp-6); }
  .lab__services       { grid-template-columns: repeat(3, 1fr); }
  .contact__layout     { grid-template-columns: 1fr; }
  .contact__info       { flex-direction: row; flex-wrap: wrap; }

  .about__grid         {
    grid-template-columns: 1fr;
    gap: var(--sp-6);
  }
  .about__image-wrap { max-width: 300px; margin-inline: auto; }
}

/* ── 19. RESPONSIVE — MOBILE (375px) ────────────────────────────────── */
@media (max-width: 640px) {
  :root {
    --sp-12: 4rem;
    --sp-8 : 3rem;
  }

  .navbar__links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(8, 13, 24, 0.97);
    backdrop-filter: blur(16px);
    padding: var(--sp-4);
    gap: var(--sp-3);
    border-bottom: 1px solid var(--clr-border);
  }
  .navbar__links.is-open { display: flex; }
  .navbar__hamburger { display: flex; }

  .skills__grid        { grid-template-columns: 1fr; }
  .projects__grid      { grid-template-columns: 1fr; }
  .certs__strip        { grid-template-columns: 1fr; }
  .lab__brands-grid    { grid-template-columns: 1fr 1fr; }
  .lab__services       { grid-template-columns: repeat(3, 1fr); }
  .footer__inner       { grid-template-columns: 1fr; text-align: center; }
  .footer__copy        { order: 1; }
  .footer__socials     { justify-self: center; order: 2; }
  .footer__dev         { justify-self: center; order: 3; }
  .contact__card       { padding: var(--sp-4); }
  .hero__cta-group     { flex-direction: column; align-items: flex-start; }

  .section-pad { padding-block: var(--sp-8); }
}