/* --- Shared base --- */
:root {
  --radius: 24px;
  --space: clamp(1.2rem, 4vw, 2.4rem);
  --header-h: 72px;
  --font-body: var(--ui-font);
  --font-head: var(--ui-font);
}

/* --- 2D (dark) tokens --- */
body.mode-2d {
  --bg:         var(--ui-bg);
  --surface:    var(--ui-surface);
  --ink:        var(--ui-text);
  --muted:      var(--ui-muted);
  --accent:     var(--ui-accent);
  --accent2:    var(--ui-accent-2);
  --warm:       #38bdf8;
  --shadow:     var(--ui-shadow);
  --card-bg:    rgba(26,26,36,.78);
  --card-border:rgba(var(--ui-accent-rgb),.18);
  --nav-bg:     rgba(15,15,19,.85);
}

/* --- 3D (dark) tokens --- */
body.mode-3d {
  --bg:         #0b0b10;
  --surface:    var(--ui-surface);
  --ink:        var(--ui-text);
  --muted:      var(--ui-muted);
  --accent:     var(--ui-accent);
  --accent2:    var(--ui-accent-2);
  --warm:       #22d3ee;
  --shadow:     0 8px 40px rgba(0,0,0,.35);
  --card-bg:    rgba(26,26,36,.72);
  --card-border:rgba(var(--ui-accent-rgb),.22);
  --nav-bg:     rgba(11,11,16,.85);
}

/* --- Reset --- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  transition: background .45s ease, color .45s ease;
  overflow-x: hidden;
}

/* --- Page-level background decorations --- */
.mode-2d body, body.mode-2d {
  background:
    radial-gradient(circle at top left, rgba(var(--ui-accent-rgb),.07), transparent 20%),
    radial-gradient(circle at top right, rgba(56,189,248,.05), transparent 24%),
    var(--ui-bg);
}

/* particles overlay */
#particles-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity .5s;
}
.mode-3d #particles-canvas { opacity: 1; }

/* 2D blurred orbs */
.page-orb {
  position: fixed;
  z-index: -1;
  width: 28rem; height: 28rem;
  border-radius: 50%;
  filter: blur(85px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .5s;
}
.mode-2d .page-orb { opacity: .08; }
.orb-left  { top: -10rem; left: -8rem;  background: var(--accent); }
.orb-right { top: 12rem;  right: -10rem; background: var(--warm); }

/* --- Container --- */
.container {
  width: min(1160px, calc(100% - 2.4rem));
  margin: 0 auto;
}

/* ------------------------------------------
   NAVBAR
   ------------------------------------------ */
.navbar {
  position: sticky;
  top: var(--ui-bar-h);
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--card-border);
  transition: background .45s, border-color .45s;
}

.nav-container {
  width: min(1160px, calc(100% - 2.4rem));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -.04em;
  color: var(--ink);
  transition: color .45s;
}
.logo-dot { color: var(--accent); }

/* --- Mode switch --- */
.switch-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.switch-lbl {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #888;
  transition: color 0.3s;
  user-select: none;
}
.switch-lbl.active { color: #f0f0f0; }

.switch-track {
  position: relative;
  width: 80px;
  height: 40px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.12);
  background: var(--ui-surface-3);
  cursor: pointer;
  transition: border-color 0.35s;
  overflow: hidden;
}

.switch-fill {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: var(--ui-accent);
  opacity: 0;
  transition: opacity 0.35s;
}
.switch-track.on .switch-fill { opacity: 1; }
.switch-track.on { border-color: var(--ui-accent-2); }

.switch-thumb {
  position: absolute;
  top: 5px;
  left: 5px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.35s cubic-bezier(.4,0,.2,1);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}
.switch-track.on .switch-thumb { transform: translateX(40px); }

.thumb-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s, transform 0.2s;
}
.icon-3d { opacity: 0; transform: scale(0.6); }
.switch-track.on .icon-2d { opacity: 0; transform: scale(0.6); }
.switch-track.on .icon-3d { opacity: 1; transform: scale(1); }

/* --- Nav menu --- */
.nav-menu {
  display: flex;
  list-style: none;
  gap: .4rem;
  align-items: center;
  margin-left: auto;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: .5rem .85rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: .92rem;
  font-weight: 700;
  transition: background .2s, color .2s;
}
.nav-link:hover,
.nav-link.active {
  color: var(--ink);
  background: rgba(128,128,128,.1);
}

/* --- Hamburger --- */
.hamburger {
  display: none;
  width: 44px; height: 44px;
  border-radius: 14px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  transition: background .35s, border-color .35s;
}
.hamburger span {
  width: 20px; height: 2px;
  border-radius: 4px;
  background: var(--ink);
  transition: background .35s;
}

/* ------------------------------------------
   HEADINGS & TYPOGRAPHY
   ------------------------------------------ */
.logo, h1, h2, h3, .featured-card h3 {
  font-family: var(--font-head);
}

h2 {
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1;
  letter-spacing: -.05em;
  margin-bottom: .8rem;
}

.section-head {
  max-width: 760px;
  margin-bottom: 2rem;
}
.kicker {
  text-transform: uppercase;
  letter-spacing: .15em;
  font-size: .75rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: .5rem;
}
.section-sub { color: var(--muted); }

/* ------------------------------------------
   BUTTONS
   ------------------------------------------ */
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 48px;
  padding: .78rem 1.2rem;
  border-radius: 14px;
  font-weight: 800;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s, background .3s, box-shadow .3s;
}
.btn:hover { transform: translateY(-2px); }

.mode-2d .btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 4px 24px rgba(var(--ui-accent-rgb),.3);
}
.mode-3d .btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 4px 24px rgba(var(--ui-accent-rgb),.35);
}

.btn-secondary, .btn-outline {
  background: rgba(128,128,128,.08);
  border-color: var(--card-border);
  color: var(--ink);
}

/* ------------------------------------------
   SECTIONS
   ------------------------------------------ */
section {
  position: relative;
  z-index: 1;
  padding: 5rem 0;
}

#home { min-height: 90vh; display: flex; align-items: center; padding-top: calc(var(--header-h) + 2rem); }

/* --- HERO 2D --- */
.hero-2d { display: none; width: 100%; }
.mode-2d .hero-2d { display: block; }
.mode-2d .hero-3d { display: none; }

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0,1.3fr) minmax(280px,.85fr);
  gap: 1.2rem;
}

.intro-copy {
  padding: clamp(2rem,3vw,3rem);
  border-radius: var(--radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
}

.section-kicker {
  text-transform: uppercase;
  letter-spacing: .15em;
  font-size: .75rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 1rem;
}

.title-2d {
  font-size: clamp(2.5rem,6vw,4.6rem);
  line-height: .98;
  letter-spacing: -.05em;
  max-width: 12ch;
  color: var(--ink);
}

.lead { font-size: 1.08rem; color: var(--ink); margin-top: 1.3rem; }
.sub-lead { margin-top: 1rem; color: var(--muted); max-width: 62ch; }

.intro-panel {
  padding: 1.5rem;
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--ui-surface-3), var(--ui-surface-2));
  color: var(--ui-text);
  border: 1px solid rgba(255,255,255,.06);
  box-shadow: var(--shadow);
}
.panel-label {
  text-transform: uppercase;
  letter-spacing: .15em;
  font-size: .75rem;
  font-weight: 800;
  color: var(--accent2);
  margin-bottom: 1rem;
}
.hero-metrics { display: grid; gap: .8rem; }
.hero-metrics article {
  padding: 1rem;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.08);
  background: rgba(255,255,255,.04);
}
.hero-metrics strong { display: block; font-size: 1.5rem; margin-bottom: .2rem; }
.hero-metrics span { color: rgba(238,244,255,.72); font-size: .92rem; }
.hero-stack { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.1rem; }
.hero-stack span {
  padding: .4rem .72rem;
  font-size: .78rem;
  color: var(--ui-text);
  background: rgba(158,215,211,.12);
  border: 1px solid rgba(158,215,211,.18);
  border-radius: 999px;
  font-weight: 800;
}

/* --- HERO 3D --- */
.hero-3d { display: none; width: 100%; }
.mode-3d .hero-3d { display: block; }
.mode-3d .hero-2d { display: none; }

.hero-3d-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.2rem;
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 2rem;
  align-items: center;
}

.hero-visual {
  grid-column: 2;
  grid-row: 1;
}

.hero-3d-content {
  grid-column: 1;
  grid-row: 1;
}

.hero-tag {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .78rem;
  font-weight: 700;
  color: var(--accent2);
  margin-bottom: 1.2rem;
}

.title-3d {
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  line-height: .95;
  letter-spacing: -.055em;
}
.title-3d .line { display: block; }
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--warm));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  margin-top: 1.4rem;
  color: var(--muted);
  max-width: 48ch;
  font-size: 1.05rem;
}

.hero-stats-3d {
  display: flex;
  gap: 2.5rem;
  margin-top: 2.5rem;
}
.stat-3d strong {
  display: block;
  font-family: var(--font-head);
  font-size: 1.8rem;
  color: var(--accent2);
}
.stat-3d span { color: var(--muted); font-size: .85rem; }

/* -- 3D Three.js Canvas -- */
.hero-visual { display: grid; place-items: center; }
#hero-3d-canvas {
  width: 100%;
  height: 100%;
  min-height: 400px;
  display: block;
  border-radius: 20px;
}

/* ------------------------------------------
   ABOUT
   ------------------------------------------ */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.about-card {
  padding: 1.6rem;
  border-radius: var(--radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  transition: transform .25s, border-color .25s, background .35s, box-shadow .35s;
}
.mode-2d .about-card:hover { transform: translateY(-6px); }

.about-icon {
  width: 52px; height: 52px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--accent);
  transition: background .35s, color .35s;
}

.mode-3d .about-icon { background: rgba(var(--ui-accent-rgb),.15); }

.about-card h3 {
  font-family: var(--font-head);
  font-size: 1.15rem;
  margin-bottom: .5rem;
}
.about-card p { color: var(--muted); font-size: .95rem; }

/* ------------------------------------------
   FEATURED PROJECT
   ------------------------------------------ */
.featured-card {
  display: grid;
  grid-template-columns: minmax(0,1.45fr) minmax(260px,.8fr);
  gap: 1.2rem;
  padding: clamp(1.4rem,2.4vw,2rem);
  border-radius: 30px;
  background: linear-gradient(135deg, var(--ui-surface-3), var(--ui-surface-2));
  color: var(--ui-text);
  border: 1px solid rgba(255,255,255,.06);
  box-shadow: var(--shadow);
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: .35rem .82rem;
  margin-bottom: 1rem;
  font-size: .78rem;
  font-weight: 800;
  border-radius: 999px;
  background: rgba(210,140,69,.16);
  border: 1px solid rgba(210,140,69,.25);
  color: var(--warm);
}

.featured-card h3 {
  font-size: clamp(1.8rem,4vw,2.9rem);
  line-height: 1.05;
  letter-spacing: -.04em;
  max-width: 16ch;
}
.featured-copy > p { margin-top: 1rem; color: rgba(238,244,255,.76); max-width: 58ch; }

.feature-list {
  list-style: none;
  display: grid;
  gap: .78rem;
  margin: 1.4rem 0;
}
.feature-list li {
  position: relative;
  padding-left: 1.2rem;
  color: var(--ui-text);
}
.feature-list li::before {
  content: '';
  position: absolute;
  top: .66rem; left: 0;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent2);
}

.tech-tags { display: flex; flex-wrap: wrap; gap: .5rem; }
.tech-tag {
  padding: .34rem .66rem;
  font-size: .74rem;
  font-weight: 800;
  border-radius: 999px;
  color: var(--accent2);
  background: rgba(var(--ui-accent-rgb),.1);
  border: 1px solid rgba(var(--ui-accent-rgb),.2);
}

.featured-side { display: grid; gap: 1rem; }
.score-card, .mini-grid article {
  padding: 1.1rem;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,.08);
  background: rgba(255,255,255,.04);
}
.score-label {
  display: block;
  margin-bottom: .7rem;
  color: var(--accent2);
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  font-weight: 800;
}
.score-card strong { display: block; font-size: 1.35rem; margin-bottom: .45rem; }
.score-card p { color: rgba(238,244,255,.72); }

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .8rem;
}
.mini-grid span { display: inline-flex; margin-bottom: .9rem; font-size: 1.35rem; color: var(--warm); }
.mini-grid p { color: var(--ui-text); font-weight: 700; }

.featured-more {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.featured-mini {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.35rem;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(24,34,51,.95), rgba(16,24,38,.95));
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: var(--shadow);
}

.featured-mini-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: var(--warm);
  background: rgba(34,211,238,.12);
  border: 1px solid rgba(34,211,238,.22);
  font-size: 1.2rem;
}

.featured-mini h3 {
  margin: .15rem 0 .45rem;
  font-size: 1.35rem;
}

.featured-mini p {
  color: rgba(238,244,255,.72);
  font-size: .9rem;
  margin-bottom: .85rem;
}

.featured-mini .score-label { margin-bottom: .2rem; }

.featured-link {
  grid-column: 2;
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--accent2);
  font-size: .82rem;
  font-weight: 800;
}

.featured-link:hover { color: #fff; }

/* ------------------------------------------
   PROJECTS
   ------------------------------------------ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 2rem;
}
.filter-btn {
  padding: .5rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--muted);
  font-weight: 700;
  font-size: .88rem;
  cursor: pointer;
  transition: all .25s;
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.project-card {
  position: relative;
  padding: 1.4rem;
  border-radius: var(--radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: .7rem;
  transition: transform .25s, border-color .25s, background .35s, box-shadow .35s;
  overflow: hidden;
}

.mode-3d .project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(var(--ui-accent-rgb),.08), transparent 40%);
  pointer-events: none;
}

.project-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.project-topline i { color: var(--warm); font-size: 1.15rem; }

.card-badge {
  display: inline-flex;
  align-items: center;
  min-height: 31px;
  padding: .25rem .7rem;
  font-size: .74rem;
  font-weight: 800;
  border-radius: 999px;
  transition: background .35s, color .35s;
}

.mode-3d .card-badge { color: var(--accent2); background: rgba(var(--ui-accent-rgb),.15); }

.project-card h3 {
  font-family: var(--font-head);
  font-size: 1.25rem;
  line-height: 1.1;
  letter-spacing: -.04em;
}
.project-card .project-text { color: var(--muted); font-size: .94rem; }

.project-tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: auto; }
.project-tags .tech-tag {
  font-size: .72rem;
  padding: .28rem .55rem;
}
.mode-3d .project-tags .tech-tag {
  background: rgba(var(--ui-accent-rgb),.12);
  color: var(--accent2);
  border-color: rgba(var(--ui-accent-rgb),.2);
}

.project-links {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}
.btn-outline-minimal {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  min-height: 40px;
  padding: .5rem .85rem;
  border-radius: 12px;
  font-weight: 800;
  font-size: .88rem;
  border: 1px solid var(--card-border);
  background: rgba(128,128,128,.06);
  color: var(--ink);
  transition: background .2s;
}
.btn-outline-minimal:hover { background: rgba(128,128,128,.14); }

/* ------------------------------------------
   SKILLS
   ------------------------------------------ */

/* - 2D: card-based skills - */
.skills-2d { display: none; }
.mode-2d .skills-2d { display: block; }
.mode-2d .skills-3d { display: none; }

.skills-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.skill-card {
  padding: 1.35rem;
  border-radius: var(--radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  transition: transform .22s, border-color .22s;
}
.skill-card:hover { transform: translateY(-6px); }
.skill-card h3 {
  font-family: var(--font-head);
  font-size: 1.2rem;
  margin-bottom: 1rem;
}
.skill-card ul {
  list-style: none;
  display: grid;
  gap: .6rem;
}
.skill-card li {
  padding-bottom: .55rem;
  border-bottom: 1px solid var(--card-border);
  color: var(--muted);
}
.skill-card li:last-child { border-bottom: 0; padding-bottom: 0; }

/* - 3D: skill orbs - */
.skills-3d { display: none; }
.mode-3d .skills-3d { display: block; }
.mode-3d .skills-2d { display: none; }

.skills-orbs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1.6rem;
  justify-items: center;
}

.skill-orb {
  --percent: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
  padding: 1.6rem 1rem;
  border-radius: 22px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  width: 100%;
  max-width: 180px;
  text-align: center;
  transition: transform .25s;
}

.orb-ring {
  position: absolute;
  inset: -3px;
  border-radius: 24px;
  padding: 3px;
  mask: linear-gradient(#fff 0,#fff 0) content-box, linear-gradient(#fff 0,#fff 0);
  -webkit-mask: linear-gradient(#fff 0,#fff 0) content-box, linear-gradient(#fff 0,#fff 0);
  mask-composite: exclude;
  -webkit-mask-composite: xor;
  background: conic-gradient(
    var(--accent) 0%,
    var(--warm) calc(var(--percent) * 1%),
    transparent calc(var(--percent) * 1%)
  );
  opacity: .65;
  transition: opacity .4s;
}
.skill-orb:hover .orb-ring { opacity: 1; }

.skill-icon {
  font-size: 2rem;
  color: var(--accent2);
}
.skill-orb p {
  font-weight: 700;
  font-size: .88rem;
  color: var(--ink);
}

/* ------------------------------------------
   CONTACT
   ------------------------------------------ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.contact-card {
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 1.35rem;
  border-radius: var(--radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  transition: transform .25s, border-color .25s, background .35s;
}


.contact-icon {
  width: 56px; height: 56px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 18px;
  font-size: 1.3rem;
  transition: background .35s, color .35s;
}

.mode-3d .contact-icon { background: rgba(var(--ui-accent-rgb),.15); color: var(--accent2); }

.contact-label {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .72rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: .2rem;
}
.contact-card span { color: var(--muted); font-size: .92rem; }

/* ------------------------------------------
   FOOTER
   ------------------------------------------ */
.footer { padding: 0 0 2rem; }
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--card-border);
  color: var(--muted);
}
.back-top { color: var(--ink); font-weight: 800; }

/* ------------------------------------------
   TILT + GLOW (3D only)
   ------------------------------------------ */
.mode-3d .tilt-card {
  transition: transform .18s ease;
}

/* card glow on hover (3D) */
.mode-3d .about-card::before,
.mode-3d .contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(400px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(var(--ui-accent-rgb),.08), transparent 40%);
  pointer-events: none;
}
.mode-3d .about-card,
.mode-3d .contact-card {
  position: relative;
  overflow: hidden;
}

/* ------------------------------------------
   REVEAL ANIMATION
   ------------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ------------------------------------------
   RESPONSIVE
   ------------------------------------------ */
@media (max-width: 980px) {
  .intro-grid,
  .featured-card,
  .featured-more {
    grid-template-columns: 1fr;
  }
  .title-2d, .featured-card h3 { max-width: none; }
  .hero-3d-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-visual, .hero-3d-content { grid-column: 1; }
  .hero-visual { grid-row: 1; }
  .hero-3d-content { grid-row: 2; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-stats-3d { justify-content: center; }
  .hero-visual { margin-top: 2rem; }
  .hero-actions { justify-content: center; }
}

@media (max-width: 760px) {
  .hamburger { display: inline-flex; }

  .nav-menu {
    position: absolute;
    top: calc(100% + .5rem);
    right: 1.2rem;
    left: 1.2rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: .7rem;
    border-radius: 18px;
    border: 1px solid var(--card-border);
    background: var(--surface);
    box-shadow: var(--shadow);
  }
  .nav-menu.active { display: flex; }
  .nav-link { justify-content: center; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  #hero-3d-canvas { min-height: 300px; }
}

@media (max-width: 540px) {
  .container, .nav-container { width: min(100% - 1.2rem, 1160px); }
  .intro-copy, .intro-panel, .featured-card, .project-card, .skill-card, .contact-card, .about-card {
    border-radius: 20px;
  }
  .mini-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; }
  .projects-grid { grid-template-columns: 1fr; }
  .skills-orbs-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── Project Modal ── */
.project-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(10,15,30,.7);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  animation: fadeIn .25s ease;
}
.project-modal.open { display: flex; }
.modal-content {
  background: var(--ui-surface);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 20px;
  padding: 36px;
  max-width: 600px;
  width: 92%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  animation: slideUp .3s ease;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--ui-muted);
  transition: color .2s;
}
.modal-close:hover { color: #fff; }
.modal-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.modal-icon { font-size: 2rem; }
.modal-header h2 { font-size: 1.4rem; margin-top: 6px; }
.modal-desc { line-height: 1.7; margin-bottom: 16px; color: var(--ui-muted); }
.modal-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.modal-links { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.modal-details {
  padding: 14px;
  border-radius: 12px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.06);
  font-size: .9rem;
  line-height: 1.6;
  color: var(--ui-muted);
}
.mode-2d .modal-content {
  background: var(--ui-surface);
  border-color: var(--ui-border);
}
.mode-2d .modal-close { color: var(--ui-muted); }
.mode-2d .modal-close:hover { color: var(--ui-text); }
.mode-2d .modal-desc { color: var(--ui-muted); }
.mode-2d .modal-details { background: var(--ui-surface-2); border-color: var(--ui-border); color: var(--ui-muted); }



/* ═══════════════════════════════════════
   TIMELINE
═══════════════════════════════════════ */
#timeline { padding: 4rem 0; overflow: hidden; }
.timeline-scroll-wrapper {
  position: relative;
  overflow: hidden;
  padding: 1rem 2.5rem 1.5rem;
}
.timeline-track {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding-bottom: 2rem;
  position: relative;
}
.timeline-track::-webkit-scrollbar { display: none; }
.timeline-track::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--accent, #8b5cf6) 20%, var(--accent2, #a78bfa) 80%, transparent 100%);
  opacity: .4;
  z-index: 0;
}
.tl-item {
  flex: 0 0 240px;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 12px;
  position: relative;
  z-index: 1;
}
.tl-dot {
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 3px solid var(--accent, #8b5cf6);
  background: var(--bg, #0d1117);
  flex-shrink: 0;
  margin-bottom: 18px;
  transition: transform .2s, box-shadow .2s;
  position: relative;
  z-index: 2;
}
.tl-item:hover .tl-dot {
  transform: scale(1.3);
  box-shadow: 0 0 16px var(--accent, #8b5cf6);
}
.tl-dot-now {
  background: var(--accent, #8b5cf6);
  box-shadow: 0 0 20px var(--accent, #8b5cf6);
}
.tl-card {
  background: var(--surface, #111520);
  border: 1px solid var(--border, rgba(255,255,255,.07));
  border-radius: 12px;
  padding: 14px 16px;
  width: 100%;
  transition: transform .2s, border-color .2s, box-shadow .2s;
}
.tl-item:hover .tl-card {
  transform: translateY(-4px);
  border-color: var(--accent, #8b5cf6);
  box-shadow: 0 8px 24px rgba(139,92,246,.15);
}
.tl-card-now {
  border-color: var(--accent, #8b5cf6);
  background: rgba(139,92,246,.06);
}
.tl-year {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .07em;
  color: var(--accent, #8b5cf6);
  margin-bottom: 6px;
}
.tl-card h4 { font-size: .9rem; font-weight: 700; margin-bottom: 6px; }
.tl-card p { font-size: .78rem; color: var(--muted, #6b7a90); line-height: 1.5; margin-bottom: 8px; }
.tl-tag {
  display: inline-block;
  font-size: .68rem;
  font-weight: 700;
  background: rgba(139,92,246,.15);
  color: var(--accent, #8b5cf6);
  padding: 2px 8px;
  border-radius: 20px;
  letter-spacing: .04em;
}

/* Arrow buttons */
.tl-arrow {
  position: absolute;
  top: 22px;
  transform: translateY(0);
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border, rgba(255,255,255,.07));
  background: var(--surface, #111520);
  color: var(--text, #e4eaf2);
  cursor: pointer;
  z-index: 10;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s, border-color .2s;
}
.tl-arrow:hover { background: var(--accent, #8b5cf6); border-color: var(--accent, #8b5cf6); }
.tl-arrow-left  { left: 0; }
.tl-arrow-right { right: 0; }

/* CV Button */
.btn-cv {
  background: transparent;
  border: 2px solid var(--muted, #6b7a90);
  color: var(--text, #e4eaf2);
  padding: .6rem 1.4rem;
  border-radius: 9999px;
  font-weight: 700;
  font-size: .9rem;
  text-decoration: none;
  transition: all .2s;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  white-space: nowrap;
}
.btn-cv:hover {
  border-color: var(--accent, #8b5cf6);
  color: var(--accent, #8b5cf6);
  transform: translateY(-2px);
}