:root {
  --radius: 0.5rem;
  --background: oklch(0.16 0.01 250);
  --foreground: oklch(0.95 0.01 250);
  --card: oklch(0.2 0.012 250);
  --primary: oklch(0.82 0.18 150);
  --primary-foreground: oklch(0.16 0.01 250);
  --secondary: oklch(0.26 0.015 250);
  --muted-foreground: oklch(0.68 0.02 250);
  --destructive: oklch(0.65 0.2 25);
  --chart-4: oklch(0.83 0.17 85);
  --border: oklch(0.3 0.015 250);
  --shadow-glow: 0 0 60px -15px color-mix(in oklab, var(--primary) 45%, transparent);
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background-color: color-mix(in oklab, var(--background) 80%, transparent);
  backdrop-filter: blur(8px);
}

.nav {
  max-width: 64rem;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-photo {
  height: 1.75rem;
  width: 1.75rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
  object-fit: cover;
  object-position: center 25%;
}

.brand-name {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  color: var(--muted-foreground);
}

.nav-links a:hover {
  color: var(--primary);
}

.nav-github {
  transition: color 0.2s ease;
  display: inline-flex;
}

/* ---------- layout ---------- */

.wrap {
  max-width: 64rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  border-top: 1px solid var(--border);
  padding: 5rem 0;
}

.section-title {
  margin: 0 0 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--primary);
}

.accent {
  color: var(--primary);
}

/* ---------- hero ---------- */

.hero {
  display: grid;
  gap: 3rem;
  padding: 6rem 0;
}

.available {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--primary);
}

.mono-label {
  margin: 1.5rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted-foreground);
}

.name {
  margin: 0.5rem 0 0;
  font-size: 3rem;
  line-height: 1.1;
  font-weight: 700;
}

.tagline {
  margin: 1.25rem 0 0;
  font-size: 1.5rem;
  line-height: 1.35;
  color: color-mix(in oklab, var(--foreground) 90%, transparent);
}

.lead {
  margin: 1.5rem 0 0;
  font-size: 1.125rem;
  color: var(--muted-foreground);
}

.cta {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-block;
  border-radius: calc(var(--radius) - 2px);
  padding: 0.75rem 1.25rem;
  font-weight: 500;
}

.btn-solid {
  background-color: var(--primary);
  color: var(--primary-foreground);
}

.btn-solid:hover {
  opacity: 0.9;
}

.btn-ghost {
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--primary);
}

.term-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: var(--card);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  box-shadow: var(--shadow-glow);
}

.term-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.dot {
  height: 0.75rem;
  width: 0.75rem;
  border-radius: 9999px;
}

.dot-red {
  background-color: var(--destructive);
}

.dot-yellow {
  background-color: var(--chart-4);
}

.dot-green {
  background-color: var(--primary);
}

.term-file {
  margin-left: 0.5rem;
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

.term-photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center 18%;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 4px);
}

.term-cmd {
  margin: 1rem 0 0;
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

.term-out {
  margin: 0.25rem 0 0;
}

.term-cursor {
  margin: 0.75rem 0 0;
}

.cursor {
  color: var(--primary);
  animation: blink 1.2s steps(2, start) infinite;
}

@keyframes blink {
  to {
    visibility: hidden;
  }
}

/* ---------- skills ---------- */

.skill-grid {
  display: grid;
  gap: 1rem;
}

.skill-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: var(--card);
  padding: 1.25rem;
}

.skill-card h3 {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--primary);
}

.skill-tags {
  margin-top: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tags span {
  background-color: var(--secondary);
  border-radius: calc(var(--radius) - 4px);
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
}

/* ---------- screen shots ---------- */

.shots {
  border-top: 1px solid var(--border);
  padding: 4rem 0;
}

.shot-grid {
  display: grid;
  gap: 1rem;
}

.shot {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: var(--card);
}

.shot img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.shot figcaption {
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

/* ---------- projects ---------- */

.project-grid {
  display: grid;
  gap: 1.5rem;
}

.project-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: var(--card);
  padding: 1.5rem;
  transition: border-color 0.2s ease;
}

.project-card:hover {
  border-color: var(--primary);
}

.project-card:hover .project-name {
  color: var(--primary);
}

.project-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.project-name {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 600;
}

.project-stat {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary);
  white-space: nowrap;
}

.project-desc {
  margin: 0.75rem 0 0;
  color: var(--muted-foreground);
}

.project-tags {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

.project-more {
  margin: 1rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary);
}

/* ---------- experience ---------- */

.timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.5rem;
  border-left: 1px solid var(--border);
}

.timeline li {
  position: relative;
}

.timeline li + li {
  margin-top: 2rem;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -1.875rem;
  top: 0.5rem;
  height: 0.625rem;
  width: 0.625rem;
  border-radius: 9999px;
  background-color: var(--primary);
}

.timeline .time {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

.timeline h3 {
  margin: 0.25rem 0 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.timeline h3 span {
  color: var(--muted-foreground);
  font-weight: 400;
}

.timeline .note {
  margin: 0.5rem 0 0;
  color: var(--muted-foreground);
}

/* ---------- contact ---------- */

.contact-head {
  margin: 0;
  font-size: 2.25rem;
  font-weight: 700;
}

.contact-links {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

/* ---------- responsive ---------- */

@media (min-width: 640px) {
  .skill-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .shot-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .hero {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: center;
  }

  .name {
    font-size: 3.75rem;
  }

  .tagline {
    font-size: 1.7rem;
  }

  .skill-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
/* AI Chatbot */

.chatbot {
  position: fixed;
  bottom: 25px;
  right: 25px;
  z-index: 9999;
  font-family: "JetBrains Mono", monospace;
}

.chat-toggle {
  background: #a3e635;
  color: #111;
  border: none;
  padding: 13px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
}

.chat-window {
  position: absolute;
  bottom: 60px;
  right: 0;
  width: 350px;
  height: 450px;
  background: #111827;
  border: 1px solid #374151;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: #fff;
}

.hidden {
  display: none;
}

.chat-header {
  padding: 15px;
  background: #1f2937;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
}

.chat-header button {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  font-size: 20px;
}

.chat-messages {
  flex: 1;
  padding: 15px;
  overflow-y: auto;
  font-size: 12px;
}

.bot-message,
.user-message {
  padding: 10px;
  margin-bottom: 12px;
  border-radius: 6px;
  line-height: 1.6;
}

.bot-message {
  background: #1f2937;
  color: #a3e635;
}

.user-message {
  background: #374151;
  text-align: right;
}

.chat-form {
  display: flex;
  padding: 10px;
  gap: 8px;
}

.chat-form input {
  flex: 1;
  min-width: 0;
  background: #1f2937;
  border: 1px solid #374151;
  color: white;
  padding: 10px;
  border-radius: 5px;
}

.chat-form button {
  background: #a3e635;
  border: none;
  padding: 10px;
  cursor: pointer;
  border-radius: 5px;
}

@media (max-width: 480px) {
  .chat-window {
    width: calc(100vw - 30px);
    right: -10px;
    height: 70vh;
  }
}