/* === SAIFEDDINE MAKHLOUF — PORTFOLIO === */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@300;400;500;700&family=Instrument+Serif:ital@0;1&display=swap');

:root {
  --bg: #05070d;
  --bg-2: #0a0e1a;
  --ink: #e8ecf5;
  --ink-dim: #8a92a6;
  --ink-faint: #4a526a;
  --cyan: #00d4ff;
  --violet: #7c3aed;
  --magenta: #ff2d92;
  --line: rgba(255, 255, 255, 0.08);
  --line-bright: rgba(0, 212, 255, 0.35);
  --grid: rgba(0, 212, 255, 0.04);

  --display: 'Space Grotesk', system-ui, sans-serif;
  --serif: 'Instrument Serif', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

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

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--display);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body {
  background:
    radial-gradient(ellipse at 20% 0%, rgba(0, 212, 255, 0.08), transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(124, 58, 237, 0.08), transparent 50%),
    var(--bg);
  min-height: 100vh;
}

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

::selection { background: var(--cyan); color: var(--bg); }

/* === Three.js canvas — fixed full-bleed background === */
#three-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* === Page layer === */
.page {
  position: relative;
  z-index: 2;
}

/* === Top nav === */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 48px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  mix-blend-mode: difference;
  pointer-events: none;
}
.nav > * { pointer-events: auto; }
.nav .brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--ink);
}
.nav .brand .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}
.nav ul {
  display: flex; gap: 28px; list-style: none;
}
.nav ul a {
  color: var(--ink-dim);
  transition: color 0.2s;
}
.nav ul a:hover { color: var(--cyan); }
.nav .status {
  color: var(--cyan);
  display: flex; align-items: center; gap: 8px;
}

/* === Scroll progress === */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  z-index: 200;
  width: 0%;
  transition: width 0.1s;
}

/* === Generic section === */
.section {
  position: relative;
  min-height: 100vh;
  padding: 120px 48px;
  max-width: 1440px;
  margin: 0 auto;
}

.section-tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-tag::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--cyan);
}

/* === HERO === */
.hero {
  height: 100vh;
  min-height: 760px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: 120px 48px 80px;
  max-width: 1440px;
  margin: 0 auto;
}
.hero .meta-top {
  position: absolute;
  top: 100px; left: 48px; right: 48px;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.hero h1 {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(56px, 11vw, 168px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--ink);
  margin-bottom: 0;
}
.hero h1 .stack-row { display: block; }
.hero h1 .italic {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  color: var(--cyan);
}
.hero .tagline {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-dim);
  letter-spacing: 0.05em;
  margin-top: 32px;
  max-width: 540px;
  line-height: 1.6;
}
.hero .tagline span { color: var(--cyan); }

.hero .role-card {
  position: absolute;
  bottom: 100px; right: 48px;
  border: 1px solid var(--line);
  background: rgba(10, 14, 26, 0.6);
  backdrop-filter: blur(12px);
  padding: 20px 24px;
  max-width: 320px;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.7;
  color: var(--ink-dim);
}
.hero .role-card .label {
  color: var(--cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 8px;
  font-size: 10px;
}
.hero .role-card strong { color: var(--ink); font-weight: 500; }

.hero .scroll-hint {
  position: absolute;
  bottom: 40px; left: 48px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex; align-items: center; gap: 12px;
}
.hero .scroll-hint .line {
  width: 60px; height: 1px; background: var(--ink-faint);
  position: relative; overflow: hidden;
}
.hero .scroll-hint .line::after {
  content: '';
  position: absolute; left: 0; top: 0;
  width: 30%; height: 100%;
  background: var(--cyan);
  animation: scroll-arrow 2s infinite;
}
@keyframes scroll-arrow {
  0% { left: -30%; }
  100% { left: 100%; }
}

/* === ABOUT === */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.about-grid h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.about-grid h2 .italic {
  font-family: var(--serif);
  font-style: italic;
  color: var(--cyan);
}
.about-grid .lede {
  font-family: var(--display);
  font-size: 18px;
  line-height: 1.6;
  color: var(--ink);
  margin-bottom: 24px;
  max-width: 520px;
}
.about-grid p {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-dim);
  margin-bottom: 16px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 32px;
}
.stat {
  background: var(--bg);
  padding: 24px;
}
.stat .num {
  font-family: var(--display);
  font-size: 44px;
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--cyan);
  line-height: 1;
}
.stat .num .small { font-size: 24px; color: var(--ink-dim); }
.stat .lbl {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-top: 8px;
}

/* === SECTION TITLES === */
.section-title {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 64px;
  flex-wrap: wrap;
  gap: 24px;
}
.section-title h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(40px, 6vw, 88px);
  line-height: 0.95;
  letter-spacing: -0.04em;
}
.section-title h2 .italic {
  font-family: var(--serif);
  font-style: italic;
  color: var(--cyan);
}
.section-title .desc {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-dim);
  max-width: 320px;
}

/* === SKILLS === */
.skills-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.skills-3d-host {
  position: relative;
  height: 540px;
  border: 1px solid var(--line);
  background: rgba(10, 14, 26, 0.4);
  overflow: hidden;
}
.skills-3d-host canvas { display: block; }
.skills-3d-host .corner {
  position: absolute;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
  padding: 12px 16px;
}
.skills-3d-host .corner.tl { top: 0; left: 0; }
.skills-3d-host .corner.tr { top: 0; right: 0; color: var(--ink-dim); }
.skills-3d-host .corner.bl { bottom: 0; left: 0; color: var(--ink-dim); }
.skills-3d-host .corner.br { bottom: 0; right: 0; color: var(--ink-dim); }

.skill-cat {
  border-top: 1px solid var(--line);
  padding: 20px 0;
}
.skill-cat:first-child { border-top: none; padding-top: 0; }
.skill-cat-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.skill-cat-head .name { color: var(--cyan); }
.skill-cat-head .count { color: var(--ink-faint); }
.skill-cat-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.skill-tag {
  font-family: var(--mono);
  font-size: 11px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  color: var(--ink-dim);
  transition: all 0.2s;
}
.skill-tag:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(0, 212, 255, 0.05);
}

/* === EXPERIENCE TIMELINE === */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 200px; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--line) 10%, var(--line) 90%, transparent);
}
.exp {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 60px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.exp::before {
  content: '';
  position: absolute;
  left: 197px; top: 44px;
  width: 7px; height: 7px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--bg), 0 0 12px var(--cyan);
}
.exp .when {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
  text-transform: uppercase;
  padding-top: 4px;
}
.exp .when .now {
  color: var(--cyan);
  display: inline-block;
  margin-left: 6px;
}
.exp .role { font-family: var(--display); font-size: 24px; font-weight: 500; letter-spacing: -0.02em; }
.exp .company {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--cyan);
  margin-top: 4px;
  letter-spacing: 0.05em;
}
.exp .company .loc { color: var(--ink-faint); margin-left: 8px; }
.exp .blurb {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-dim);
  line-height: 1.7;
  margin-top: 12px;
  max-width: 720px;
}
.exp .bullets {
  list-style: none;
  margin-top: 12px;
}
.exp .bullets li {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-dim);
  line-height: 1.7;
  padding-left: 18px;
  position: relative;
  margin-bottom: 4px;
}
.exp .bullets li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--cyan);
}
.exp .stack {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 16px;
}
.exp .stack span {
  font-family: var(--mono);
  font-size: 10px;
  padding: 3px 8px;
  border: 1px solid var(--line);
  color: var(--ink-faint);
  letter-spacing: 0.05em;
}

/* === PROJECTS / SOLAR SYSTEM === */
.projects-section {
  padding: 120px 0;
  max-width: none;
}
.projects-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 48px;
}
.solar-host {
  position: relative;
  height: 720px;
  margin: 48px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse at center, rgba(0, 212, 255, 0.04), transparent 70%);
  overflow: hidden;
}
.solar-host canvas { display: block; }
.solar-host .hud {
  position: absolute;
  top: 16px; left: 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}
.solar-host .hud .sub {
  display: block;
  color: var(--ink-faint);
  margin-top: 4px;
}
.solar-host .legend {
  position: absolute;
  bottom: 16px; right: 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--ink-faint);
  text-align: right;
}
.solar-host .center-label {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--ink-faint);
  text-transform: uppercase;
  pointer-events: none;
}

.project-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}
.proj {
  padding: 32px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  position: relative;
  cursor: pointer;
  transition: background 0.3s;
}
.proj:nth-child(2n) { border-right: none; }
.proj:hover { background: rgba(0, 212, 255, 0.03); }
.proj .num {
  position: absolute;
  top: 24px; right: 32px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}
.proj .planet {
  width: 48px; height: 48px; border-radius: 50%;
  margin-bottom: 24px;
  position: relative;
}
.proj .planet::before {
  content: '';
  position: absolute; inset: -8px;
  border: 1px solid var(--line);
  border-radius: 50%;
}
.proj h3 {
  font-family: var(--display);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.proj .kind {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.proj .desc {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-dim);
  margin-bottom: 16px;
}
.proj .stack {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 16px;
}
.proj .stack span {
  font-family: var(--mono);
  font-size: 10px;
  padding: 3px 8px;
  border: 1px solid var(--line);
  color: var(--ink-dim);
}
.proj .footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.proj .footer .live {
  color: var(--cyan);
  display: flex; align-items: center; gap: 6px;
}
.proj .footer .live::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

/* === EDUCATION + CERTS + LANG (3-col) === */
.three-col {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 48px;
  border-top: 1px solid var(--line);
  padding-top: 48px;
}
.col h3 {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.edu-item {
  border-left: 1px solid var(--line);
  padding-left: 16px;
  margin-bottom: 24px;
}
.edu-item .deg {
  font-family: var(--display);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.edu-item .school {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  margin-bottom: 4px;
}
.edu-item .when {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.edu-item .grade {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cyan);
  margin-top: 6px;
}

.cert-list {
  list-style: none;
}
.cert-list li {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-dim);
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.cert-list li::before {
  content: '◆';
  color: var(--cyan);
  font-size: 8px;
  margin-top: 4px;
  flex-shrink: 0;
}
.cert-list li .award { color: var(--cyan); font-weight: 500; }

.lang-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.lang-row .lang { font-family: var(--display); font-size: 18px; }
.lang-row .level {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.1em;
}
.lang-bar {
  height: 1px;
  background: var(--line);
  margin-top: 8px;
  position: relative;
}
.lang-bar::after {
  content: '';
  position: absolute;
  left: 0; top: 0;
  height: 1px;
  background: var(--cyan);
  width: var(--w, 100%);
  box-shadow: 0 0 8px var(--cyan);
}

/* === CONTACT / FOOTER === */
.contact {
  padding: 160px 48px 80px;
  max-width: 1440px;
  margin: 0 auto;
  position: relative;
}
.contact h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(56px, 10vw, 152px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  margin-bottom: 48px;
}
.contact h2 .italic {
  font-family: var(--serif);
  font-style: italic;
  color: var(--cyan);
}
.contact-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 80px;
  border-top: 1px solid var(--line);
  padding-top: 48px;
}
.contact .pitch {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-dim);
  max-width: 540px;
}
.contact .pitch span { color: var(--cyan); }

.cta-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  transition: all 0.25s;
  background: rgba(10, 14, 26, 0.4);
  cursor: pointer;
}
.cta:hover {
  border-color: var(--cyan);
  background: rgba(0, 212, 255, 0.08);
  color: var(--cyan);
  transform: translateX(4px);
}
.cta.primary {
  background: var(--cyan);
  color: var(--bg);
  border-color: var(--cyan);
}
.cta.primary:hover {
  background: transparent;
  color: var(--cyan);
}
.cta .arrow { font-size: 16px; }

.contact-meta {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* === Background grid === */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 80px 80px;
  z-index: 1;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* Responsive */
@media (max-width: 900px) {
  .nav { padding: 16px 20px; }
  .nav ul { display: none; }
  .section { padding: 80px 20px; }
  .hero { padding: 80px 20px; }
  .hero .meta-top, .hero .role-card, .hero .scroll-hint { left: 20px; right: 20px; }
  .hero .role-card { position: static; max-width: none; margin-top: 32px; }
  .about-grid, .skills-layout, .three-col, .contact-grid, .project-list {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .timeline::before { left: 8px; }
  .exp { grid-template-columns: 1fr; gap: 8px; padding-left: 24px; }
  .exp::before { left: 5px; top: 12px; }
  .proj { border-right: none; }
  .skills-3d-host, .solar-host { height: 420px; }
}