/* ============================================================
   Bruno Stordeur — Portfolio
   Modern static redesign (2026) — no build step
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  /* Brand */
  --teal:        #14b8a1;
  --teal-bright: #2dd4bf;
  --teal-deep:   #008073;
  --amber:       #f5b544;

  /* Dark theme (default) */
  --bg:          #0b1120;
  --bg-soft:     #0f172a;
  --surface:     #121c30;
  --surface-2:   #17233c;
  --border:      #24324f;
  --border-soft: #1b2740;
  --text:        #e7edf5;
  --text-soft:   #a9b6cc;
  --text-dim:    #7385a3;
  --shadow:      0 18px 40px -18px rgba(0, 0, 0, 0.65);
  --shadow-lg:   0 30px 70px -30px rgba(0, 0, 0, 0.8);
  --glow:        0 0 0 1px rgba(20, 184, 161, 0.25), 0 20px 45px -20px rgba(20, 184, 161, 0.35);
  --hero-glow-1: rgba(20, 184, 161, 0.22);
  --hero-glow-2: rgba(99, 102, 241, 0.18);
  --chip-bg:     rgba(255, 255, 255, 0.04);

  /* Type */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Layout */
  --maxw: 1120px;
  --radius: 16px;
  --radius-sm: 10px;
  --nav-h: 68px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

:root[data-theme="light"] {
  --bg:          #f6f8fb;
  --bg-soft:     #eef2f7;
  --surface:     #ffffff;
  --surface-2:   #f2f6fa;
  --border:      #dde5ef;
  --border-soft: #e7edf4;
  --text:        #10203a;
  --text-soft:   #43546e;
  --text-dim:    #6b7c96;
  --shadow:      0 18px 40px -22px rgba(15, 40, 80, 0.28);
  --shadow-lg:   0 30px 70px -32px rgba(15, 40, 80, 0.30);
  --glow:        0 0 0 1px rgba(0, 128, 115, 0.18), 0 20px 45px -22px rgba(0, 128, 115, 0.28);
  --hero-glow-1: rgba(20, 184, 161, 0.20);
  --hero-glow-2: rgba(99, 102, 241, 0.14);
  --chip-bg:     rgba(15, 40, 80, 0.04);
  --teal:        #0d9488;
  --teal-bright: #0f766e;
}

/* ---------- Reset / base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}

h1, h2, h3, h4 {
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.5em;
}

a { color: var(--teal-bright); text-decoration: none; }
a:hover { color: var(--teal); }

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

ul { margin: 0; padding: 0; }

::selection { background: var(--teal); color: #04110f; }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 40px);
}

.section {
  padding-block: clamp(64px, 9vw, 120px);
  position: relative;
}
.section:nth-of-type(even) { background: var(--bg-soft); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 2px;
  background: var(--teal);
  display: inline-block;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 8px;
}
.section-lead {
  color: var(--text-soft);
  max-width: 60ch;
  margin-bottom: clamp(36px, 5vw, 56px);
}

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--teal);
  --btn-fg: #04120f;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.94rem;
  border: 1px solid transparent;
  background: var(--btn-bg);
  color: var(--btn-fg);
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--glow); color: var(--btn-fg); }
.btn svg { width: 18px; height: 18px; }

.btn.ghost {
  --btn-bg: transparent;
  --btn-fg: var(--text);
  border-color: var(--border);
}
.btn.ghost:hover { border-color: var(--teal); color: var(--teal); box-shadow: none; }

/* ---------- Navbar ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.brand img {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 2px solid var(--teal);
  object-fit: cover;
}
.brand span small {
  display: block;
  font-weight: 500;
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  color: var(--text-soft);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--teal); background: var(--chip-bg); }

.nav-actions { display: flex; align-items: center; gap: 10px; }

.icon-btn {
  width: 40px; height: 40px;
  display: inline-grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.icon-btn:hover { color: var(--teal); border-color: var(--teal); transform: translateY(-1px); }
.icon-btn svg { width: 19px; height: 19px; }

.theme-toggle .moon { display: none; }
:root[data-theme="light"] .theme-toggle .sun { display: none; }
:root[data-theme="light"] .theme-toggle .moon { display: block; }

.nav-resume { display: inline-flex; }

.hamburger { display: none; }

/* ---------- Mobile nav ---------- */
.mobile-menu {
  position: fixed;
  inset: var(--nav-h) 0 auto 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px 20px;
  display: none;
  flex-direction: column;
  gap: 4px;
  z-index: 99;
  transform: translateY(-8px);
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
}
.mobile-menu.open { display: flex; opacity: 1; transform: translateY(0); }
.mobile-menu a {
  color: var(--text-soft);
  padding: 12px 8px;
  border-radius: 8px;
  font-weight: 500;
  border-bottom: 1px solid var(--border-soft);
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--teal); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero-bg::before,
.hero-bg::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.9;
}
.hero-bg::before {
  width: 46vw; height: 46vw;
  top: -12%; right: -8%;
  background: radial-gradient(circle at center, var(--hero-glow-1), transparent 68%);
  animation: float1 16s var(--ease) infinite alternate;
}
.hero-bg::after {
  width: 40vw; height: 40vw;
  bottom: -18%; left: -10%;
  background: radial-gradient(circle at center, var(--hero-glow-2), transparent 70%);
  animation: float2 20s var(--ease) infinite alternate;
}
.hero-grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 78%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 78%);
  opacity: 0.5;
}
@keyframes float1 { to { transform: translate(-40px, 40px) scale(1.1); } }
@keyframes float2 { to { transform: translate(50px, -30px) scale(1.15); } }

.hero .container { position: relative; z-index: 1; }
.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  max-width: 100%;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.35;
  color: var(--text-soft);
  background: var(--chip-bg);
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: 999px;
  margin-bottom: 26px;
}
.hero-status .dot {
  flex: 0 0 auto;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--teal-bright);
  box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.6);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.5); }
  70%  { box-shadow: 0 0 0 10px rgba(45, 212, 191, 0); }
  100% { box-shadow: 0 0 0 0 rgba(45, 212, 191, 0); }
}

.hero h1 {
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  margin-bottom: 8px;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--teal-bright), var(--teal), var(--amber));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-role {
  font-size: clamp(1.15rem, 3vw, 1.8rem);
  font-weight: 600;
  color: var(--text-soft);
  margin-bottom: 22px;
  min-height: 1.4em;
}
.hero-role .typing { color: var(--teal); }
.hero-role .cursor {
  color: var(--teal-bright);
  font-weight: 400;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-lead {
  color: var(--text-soft);
  font-size: 1.06rem;
  max-width: 60ch;
  margin-bottom: 32px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(32px, 5vw, 60px);
  align-items: start;
}
.about-text p { color: var(--text-soft); margin: 0 0 16px; }
.about-text strong { color: var(--text); }

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
}
.stat .num {
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--teal);
  line-height: 1;
}
.stat .label { color: var(--text-dim); font-size: 0.86rem; margin-top: 6px; }

/* ---------- Timeline (Experience) ---------- */
.timeline { position: relative; margin-left: 6px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--teal), transparent);
}
.tl-item {
  position: relative;
  padding-left: 38px;
  padding-bottom: 34px;
}
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: 0; top: 4px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--teal);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--teal) 18%, transparent);
}
.tl-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.tl-card:hover { border-color: var(--teal); transform: translateY(-2px); box-shadow: var(--shadow); }
.tl-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px 16px;
  margin-bottom: 4px;
}
.tl-head h3 { font-size: 1.2rem; margin: 0; }
.tl-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  white-space: nowrap;
}
.tl-role { color: var(--amber); font-weight: 600; font-size: 0.95rem; margin-bottom: 10px; }
.tl-project { color: var(--text); font-weight: 600; margin: 0 0 6px; }
.tl-card p { color: var(--text-soft); margin: 0 0 10px; font-size: 0.95rem; }
.tl-card details { margin-top: 6px; }
.tl-card summary {
  cursor: pointer;
  color: var(--teal);
  font-weight: 600;
  font-size: 0.9rem;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.tl-card summary::-webkit-details-marker { display: none; }
.tl-card summary::after { content: "+"; font-family: var(--font-mono); }
.tl-card details[open] summary::after { content: "\2212"; }
.tl-card details ul { margin: 12px 0 4px; padding-left: 20px; color: var(--text-soft); }
.tl-card details li { margin-bottom: 6px; font-size: 0.92rem; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-soft);
  background: var(--chip-bg);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 6px;
}

/* ---------- Projects ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.project {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s;
}
.project:hover { transform: translateY(-5px); border-color: var(--teal); box-shadow: var(--shadow-lg); }

.cover {
  position: relative;
  aspect-ratio: 16 / 8.5;
  display: grid;
  place-items: center;
  overflow: hidden;
  --c1: var(--teal-deep);
  --c2: #1e293b;
  background: radial-gradient(120% 120% at 20% 15%, var(--c1), transparent 55%), linear-gradient(135deg, var(--c2), #0b1120);
}
.cover::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000, transparent 75%);
  mask-image: radial-gradient(ellipse at center, #000, transparent 75%);
}
.cover .glyph {
  position: relative;
  z-index: 1;
  width: 58px; height: 58px;
  color: #fff;
  filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.45));
  transition: transform 0.4s var(--ease);
}
.project:hover .cover .glyph { transform: scale(1.12) rotate(-4deg); }
.cover .flag {
  position: absolute;
  top: 12px; left: 12px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #04120f;
  background: var(--teal-bright);
  padding: 4px 9px;
  border-radius: 999px;
  font-weight: 700;
}

/* per-project cover palettes */
.cover.kraken { --c1: #16a34a; --c2: #052e2b; }
.cover.solana { --c1: #7c3aed; --c2: #0e1230; }
.cover.student { --c1: #2563eb; --c2: #0a1730; }
.cover.kidney { --c1: #0ea5e9; --c2: #071a2b; }
.cover.zenml  { --c1: #ef5da8; --c2: #240f22; }
.cover.sql    { --c1: #14b8a1; --c2: #05201d; }

.project-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.project-body h3 { font-size: 1.18rem; margin-bottom: 8px; }
.project-body p { color: var(--text-soft); font-size: 0.92rem; margin: 0 0 16px; flex: 1; }
.project .tags { margin-top: 0; margin-bottom: 18px; }
.project-links { display: flex; gap: 10px; margin-top: auto; }
.project-links a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-soft);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 8px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.project-links a:hover { color: var(--teal); border-color: var(--teal); background: var(--chip-bg); }
.project-links svg { width: 16px; height: 16px; }

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color 0.25s, transform 0.25s;
}
.skill-group:hover { border-color: var(--teal); transform: translateY(-2px); }
.skill-group h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--amber);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}
.skill-chips { display: flex; flex-wrap: wrap; gap: 9px; }
.skill-chips li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  background: var(--chip-bg);
  border: 1px solid var(--border);
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.86rem;
  color: var(--text);
  transition: border-color 0.2s, transform 0.2s;
}
.skill-chips li:hover { border-color: var(--teal); transform: translateY(-1px); }
.skill-chips img { width: 20px; height: 20px; object-fit: contain; border-radius: 4px; }

/* ---------- Certifications ---------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 22px;
}
.cert {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.cert:hover { border-color: var(--teal); transform: translateY(-3px); box-shadow: var(--shadow); }
.cert-img { aspect-ratio: 16 / 10; overflow: hidden; background: var(--surface-2); }
.cert-img img { width: 100%; height: 100%; object-fit: cover; }
.cert-name { padding: 16px 18px; font-weight: 600; color: var(--text); font-size: 0.95rem; }

/* ---------- Education ---------- */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 22px;
}
.edu {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--teal);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.25s, box-shadow 0.25s;
}
.edu:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.edu h3 { font-size: 1.1rem; margin-bottom: 8px; }
.edu .school { color: var(--amber); font-weight: 600; }

/* ---------- Contact ---------- */
.contact { text-align: center; }
.contact .section-lead { margin-inline: auto; }
.contact-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 8px;
}
.contact-card {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 12px 22px;
  color: var(--text);
  font-weight: 500;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.contact-card:hover { border-color: var(--teal); transform: translateY(-2px); box-shadow: var(--glow); color: var(--text); }
.contact-card svg { width: 20px; height: 20px; color: var(--teal); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 30px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.86rem;
}
.footer .font-mono { font-family: var(--font-mono); }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav-links, .nav-resume { display: none; }
  .hamburger { display: inline-grid; }
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .hero h1 { font-size: clamp(2.1rem, 9vw, 3.4rem); }
  .hero-status { white-space: normal; }
  .hero-cta .btn { flex: 1 1 auto; justify-content: center; }
  .projects-grid,
  .skills-grid,
  .cert-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .stats { grid-template-columns: 1fr; }
  .brand span { display: none; }
  .btn { padding: 11px 18px; }
}