/* ---------- Tokens ---------- */
:root {
  --bg: #F6F6F8;
  --bg-grad-a: #F6F6F8;
  --bg-grad-b: #F6F6F8;
  --surface: #FFFFFF;
  --ink: #17172B;
  --ink-soft: #5B5B75;
  --line: #E7E5F3;

  --violet: #6C5CE7;
  --violet-soft: #EFECFD;
  --coral: #FF6B57;
  --coral-soft: #FFEBE7;
  --mint: #14B8A6;
  --mint-soft: #E3FBF7;
  --amber: #F5A524;
  --amber-soft: #FFF3DE;

  --chip-coral-text: #D6472F;
  --chip-mint-text: #0B8F80;
  --chip-amber-text: #B4720C;

  --shadow-color: 17, 17, 43;

  --serif: "Space Grotesk", "Inter", sans-serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;

  --rail-width: 280px;

  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #121220;
  --bg-grad-a: #14141F;
  --bg-grad-b: #1B1930;
  --surface: #191826;
  --ink: #F1F0FA;
  --ink-soft: #A7A5C4;
  --line: #2C2A44;

  --violet: #9B8CFF;
  --violet-soft: #2A2650;
  --coral: #FF8A75;
  --coral-soft: #3A2436;
  --mint: #3DD9C4;
  --mint-soft: #17332F;
  --amber: #FFC466;
  --amber-soft: #3A2E14;

  --chip-coral-text: #FF9C89;
  --chip-mint-text: #6FE3D2;
  --chip-amber-text: #FFCE85;

  --shadow-color: 0, 0, 0;

  color-scheme: dark;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: linear-gradient(180deg, var(--bg-grad-a) 0%, var(--bg-grad-b) 100%) fixed;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  transition: background 0.3s ease, color 0.3s ease;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 3px;
}

/* ---------- Rail ---------- */
.rail {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--rail-width);
  height: 100vh;
  background: var(--surface);
  border-right: 1px solid var(--line);
  padding: 3rem 2.25rem;
  display: flex;
  z-index: 10;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.rail-inner {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  width: 100%;
}

.rail-name {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 0.6rem 0;
  background: linear-gradient(120deg, var(--violet), var(--coral));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.rail-role {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.5;
}

.rail-nav {
  display: flex;
  gap: 1rem;
  margin: 2.5rem 0;
}

.rail-nav-track {
  position: relative;
  width: 2px;
  background: var(--line);
  border-radius: 1px;
  flex-shrink: 0;
}

.rail-nav-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background: var(--violet);
  border-radius: 1px;
  transition: height 0.15s linear;
}

.rail-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.rail-nav a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--ink-soft);
  border-left: 2px solid transparent;
  padding-left: 0.75rem;
  margin-left: -0.75rem;
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.rail-nav a:hover,
.rail-nav a:focus-visible {
  color: var(--ink);
}

.rail-nav a.active {
  color: var(--ink);
  border-left-color: var(--coral);
  font-weight: 600;
  transform: translateX(3px);
}

.rail-location {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  margin: 0 0 0.9rem 0;
}

.rail-resume {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  color: #fff;
  background: linear-gradient(120deg, var(--violet), #8B7CF6);
  padding: 0.6rem 1rem;
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(108, 92, 231, 0.28);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.rail-resume:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(108, 92, 231, 0.38);
}

/* ---------- Mobile nav toggle ---------- */
.nav-toggle {
  display: none;
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 20;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--surface);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Main ---------- */
.main {
  margin-left: var(--rail-width);
  max-width: 720px;
  padding: 5rem 3rem 4rem 3.5rem;
}

.hero {
  position: relative;
}

.hero-blob {
  position: absolute;
  top: -6rem;
  right: -8rem;
  width: 26rem;
  height: 26rem;
  background:
    radial-gradient(circle at 30% 30%, var(--violet) 0%, transparent 60%),
    radial-gradient(circle at 70% 70%, var(--coral) 0%, transparent 60%);
  opacity: 0.16;
  filter: blur(48px);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--violet);
  margin: 0 0 1.25rem 0;
}

.hero-line {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(1.7rem, 3.6vw, 2.65rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 0 0 1.75rem 0;
  max-width: 20ch;
}

.hero-summary {
  max-width: 58ch;
  color: var(--ink-soft);
  font-size: 1.02rem;
}

/* ---------- Hero entrance ---------- */
.hero-in {
  opacity: 0;
  transform: translateY(14px);
  animation: heroIn 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: var(--d, 0s);
}

@keyframes heroIn {
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

.section {
  margin-top: 5.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.section-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.4rem;
  margin: 0 0 2rem 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.section-title::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--violet), var(--coral));
  flex-shrink: 0;
}

/* ---------- Job / education entries ---------- */
.job, .edu-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 1.5rem;
  margin-bottom: 2.75rem;
}

.job-meta {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.job-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-violet { background: var(--violet); }
.dot-coral  { background: var(--coral); }
.dot-mint   { background: var(--mint); }
.dot-amber  { background: var(--amber); }

.job-date {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.job-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.1rem;
  margin: 0 0 0.2rem 0;
}

.job-org {
  font-size: 0.9rem;
  color: var(--violet);
  margin: 0 0 0.9rem 0;
}

.job-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.job-list li {
  margin-bottom: 0.55rem;
  font-size: 0.96rem;
}

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 2.5rem;
}

.skills-grid .skill-group:nth-child(2) { transition-delay: 0.08s; }
.skills-grid .skill-group:nth-child(3) { transition-delay: 0.16s; }
.skills-grid .skill-group:nth-child(4) { transition-delay: 0.24s; }

.job:nth-of-type(2), .edu-item:nth-of-type(2) { transition-delay: 0.1s; }

.skill-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: none;
  color: var(--ink-soft);
  margin: 0 0 0.75rem 0;
  font-weight: 500;
}

.skill-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.chip {
  font-size: 0.86rem;
  font-weight: 500;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  white-space: nowrap;
  transition: transform 0.15s ease;
}

.chip:hover { transform: translateY(-2px); }

.chip-violet { background: var(--violet-soft); color: var(--violet); }
.chip-coral  { background: var(--coral-soft);  color: var(--chip-coral-text); }
.chip-mint   { background: var(--mint-soft);   color: var(--chip-mint-text); }
.chip-amber  { background: var(--amber-soft);  color: var(--chip-amber-text); }

.cert-label {
  margin-top: 3rem;
}

.cert-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.cert-list li {
  margin-bottom: 0.4rem;
  font-size: 0.94rem;
}

/* ---------- Contact ---------- */
.contact-line {
  color: var(--ink-soft);
  max-width: 50ch;
  margin-bottom: 1.75rem;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-start;
}

.contact-pill {
  display: inline-flex;
  align-items: center;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.contact-pill:hover { transform: translateY(-2px); }

.pill-violet {
  background: var(--violet-soft);
  color: var(--violet);
}
.pill-violet:hover { box-shadow: 0 8px 18px rgba(108, 92, 231, 0.22); }

.pill-coral {
  background: var(--coral-soft);
  color: var(--chip-coral-text);
}
.pill-coral:hover { box-shadow: 0 8px 18px rgba(255, 107, 87, 0.22); }

.pill-mint {
  background: var(--mint-soft);
  color: var(--chip-mint-text);
}
.pill-mint:hover { box-shadow: 0 8px 18px rgba(20, 184, 166, 0.22); }

.footer {
  margin-top: 5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.82rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .rail {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    width: 260px;
    background: var(--bg);
    box-shadow: 0 0 0 2000px rgba(20,24,31,0);
  }

  .rail.open {
    transform: translateX(0);
    box-shadow: 8px 0 24px rgba(20,24,31,0.15);
  }

  .nav-toggle { display: flex; }

  .main {
    margin-left: 0;
    padding: 6rem 1.5rem 3rem 1.5rem;
  }

  .job, .edu-item {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
}

@media (max-width: 520px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Theme toggle ---------- */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  border-color: var(--violet);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

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

.rail-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.9rem;
}