:root {
  --bg: #ffffff;
  --fg: #18181b;
  --fg-muted: #52525b;
  --muted: #9a9a9f;
  --muted-2: #71717a;
  --accent: #ea580c;
  --accent-hover: #c2410c;
  --border: #e7e7ea;
  --border-hover: #d1d1d6;
  --badge-bg: #f6f6f7;
  --badge-fg: #3f3f46;
  --badge-hover: #ececee;
  --card-bg: #ffffff;
  --card-hover-bg: #fafafa;
  --card-hover-border: #d4d4d8;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  --card-shadow-hover: 0 4px 14px rgba(0, 0, 0, 0.06);
  --green: #22c55e;
  --active-bg: #dcfce7;
  --active-fg: #15803d;
  --active-border: #bbf7d0;
  --past-bg: #f4f4f5;
  --past-fg: #71717a;
  --past-border: #e4e4e7;
  --key-bg: #18181b;
  --key-fg: #ffffff;
  --key-overlay-bg: rgba(255, 255, 255, 0.16);
  --key-border: #27272a;
  --toast-bg: #18181b;
  --toast-fg: #ffffff;
  --toast-border: #27272a;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #09090b;
    --fg: #fafafa;
    --fg-muted: #a1a1aa;
    --muted: #71717a;
    --muted-2: #a1a1aa;
    --accent: #f97316;
    --accent-hover: #fb923c;
    --border: #27272a;
    --border-hover: #3f3f46;
    --badge-bg: #18181b;
    --badge-fg: #d4d4d8;
    --badge-hover: #222226;
    --card-bg: #111113;
    --card-hover-bg: #161619;
    --card-hover-border: #3f3f46;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --card-shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.45);
    --green: #22c55e;
    --active-bg: rgba(34, 197, 94, 0.12);
    --active-fg: #4ade80;
    --active-border: rgba(34, 197, 94, 0.25);
    --past-bg: #18181b;
    --past-fg: #a1a1aa;
    --past-border: #27272a;
    --key-bg: #fafafa;
    --key-fg: #09090b;
    --key-overlay-bg: rgba(0, 0, 0, 0.12);
    --key-border: #e4e4e7;
    --toast-bg: #18181b;
    --toast-fg: #fafafa;
    --toast-border: #3f3f46;
  }
}

:root[data-theme="dark"] {
  --bg: #09090b;
  --fg: #fafafa;
  --fg-muted: #a1a1aa;
  --muted: #71717a;
  --muted-2: #a1a1aa;
  --accent: #f97316;
  --accent-hover: #fb923c;
  --border: #27272a;
  --border-hover: #3f3f46;
  --badge-bg: #18181b;
  --badge-fg: #d4d4d8;
  --badge-hover: #222226;
  --card-bg: #111113;
  --card-hover-bg: #161619;
  --card-hover-border: #3f3f46;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.45);
  --green: #22c55e;
  --active-bg: rgba(34, 197, 94, 0.12);
  --active-fg: #4ade80;
  --active-border: rgba(34, 197, 94, 0.25);
  --past-bg: #18181b;
  --past-fg: #a1a1aa;
  --past-border: #27272a;
  --key-bg: #fafafa;
  --key-fg: #09090b;
  --key-overlay-bg: rgba(0, 0, 0, 0.12);
  --key-border: #e4e4e7;
  --toast-bg: #18181b;
  --toast-fg: #fafafa;
  --toast-border: #3f3f46;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

html, body {
  margin: 0;
  padding: 0;
  max-width: 100vw;
  overflow-x: hidden;
}

body {
  background-color: var(--bg);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.2s ease, color 0.2s ease;
  overflow-wrap: break-word;
  word-wrap: break-word;
}

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

/* Site Header */
.site-header {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.5px;
  display: inline-block;
  padding: 4px 6px;
  border-radius: 6px;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.logo:hover {
  color: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--badge-bg);
  color: var(--fg);
  cursor: pointer;
  padding: 0;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.theme-toggle:hover {
  background: var(--badge-hover);
  border-color: var(--border-hover);
}

.theme-toggle:active,
.theme-toggle.is-pressed {
  transform: scale(0.92) rotate(15deg);
}

.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }

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

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
}

/* Main Container */
.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 36px 24px 60px;
}

/* Intro Section */
.intro {
  margin-bottom: 56px;
}

.avatar-wrap {
  margin-bottom: 22px;
  display: inline-block;
}

.avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: block;
  object-fit: cover;
  object-position: center 20%;
  border: 2px solid var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.avatar:hover {
  transform: scale(1.05);
  border-color: var(--accent);
  box-shadow: 0 4px 14px rgba(234, 88, 12, 0.2);
}

h1 {
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 16px;
  letter-spacing: -0.3px;
  line-height: 1.35;
  overflow-wrap: break-word;
}

.name-link {
  color: var(--accent);
  transition: opacity 0.15s ease;
}

/* Typewriter effect styles */
.typewriter-text {
  color: var(--accent);
  cursor: pointer;
  border-bottom: 1px dashed transparent;
  transition: border-color 0.2s ease, opacity 0.15s ease;
  display: inline;
}

.typewriter-text:hover {
  border-bottom-color: var(--accent);
  opacity: 0.9;
}

.typewriter-cursor {
  display: inline-block;
  color: var(--accent);
  font-weight: 400;
  margin-left: 2px;
  animation: cursor-blink 0.9s infinite;
  vertical-align: baseline;
  user-select: none;
}

@keyframes cursor-blink {
  0%, 45% { opacity: 1; }
  50%, 95% { opacity: 0; }
  100% { opacity: 1; }
}

.intro p {
  margin: 0 0 8px;
  color: var(--fg);
  overflow-wrap: break-word;
}

.inline-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--badge-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 8px 1px 6px;
  font-weight: 500;
  vertical-align: middle;
}

/* Call to Action Buttons */
.cta-row {
  display: flex;
  gap: 12px;
  margin: 26px 0 18px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: opacity 0.15s ease, background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  user-select: none;
}

.btn:active,
.btn.is-pressed {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--key-bg);
  color: var(--key-fg);
  border-color: var(--key-bg);
}

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

.btn-secondary {
  background: var(--bg);
  color: var(--fg);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--badge-bg);
  border-color: var(--border-hover);
}

.key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  background: var(--key-overlay-bg);
  color: var(--key-fg);
  line-height: 1;
}

.key-outline {
  background: var(--badge-bg);
  color: var(--muted-2);
  border: 1px solid var(--border);
}

/* Availability Badge */
.availability {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted-2);
  font-size: 13.5px;
  margin-top: 14px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  position: relative;
  display: inline-block;
  flex-shrink: 0;
}

.dot::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border-radius: 50%;
  border: 2px solid var(--green);
  animation: pulse-ring 2.2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.85);
    opacity: 0.8;
  }
  70% {
    transform: scale(2.2);
    opacity: 0;
  }
  100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

/* Section Blocks */
.block {
  margin-bottom: 52px;
}

.eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
}

.block > p {
  margin: 0 0 18px;
  color: var(--fg);
}

/* Badges (Tech Stack & Social) */
.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--badge-bg);
  border: 1px solid var(--border);
  color: var(--badge-fg);
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 13.5px;
  font-weight: 500;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease, color 0.15s ease;
  user-select: none;
  max-width: 100%;
}

.badge-icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
}

a.badge {
  cursor: pointer;
  text-decoration: none;
}

a.badge:hover {
  background: var(--badge-hover);
  border-color: var(--border-hover);
  transform: translateY(-1px);
  color: var(--fg);
}

/* Project Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  color: inherit;
  text-decoration: none;
  box-shadow: var(--card-shadow);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease, background-color 0.15s ease;
  position: relative;
}

.card:hover {
  border-color: var(--card-hover-border);
  background: var(--card-hover-bg);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 14.5px;
}

.card-icon {
  font-size: 15px;
  line-height: 1;
}

.card-arrow {
  margin-left: 2px;
  font-size: 13px;
  color: var(--muted);
  opacity: 0;
  transform: translate(-3px, 3px);
  transition: opacity 0.15s ease, transform 0.15s ease, color 0.15s ease;
}

.card:hover .card-arrow {
  opacity: 1;
  transform: translate(0, 0);
  color: var(--accent);
}

.card p {
  margin: 0;
  color: var(--muted-2);
  font-size: 13.5px;
  line-height: 1.55;
}

/* Project Tags */
.tag {
  margin-left: auto;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  line-height: 1.3;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.tag-active {
  background: var(--active-bg);
  color: var(--active-fg);
  border: 1px solid var(--active-border);
}

.tag-past {
  background: var(--past-bg);
  color: var(--past-fg);
  border: 1px solid var(--past-border);
}

/* Inline Links */
.link {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 3px;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
  cursor: pointer;
}

.link:hover {
  color: var(--accent-hover);
  text-decoration-color: var(--accent-hover);
}

/* Site Footer */
.site-footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 24px 40px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted-2);
  flex-wrap: wrap;
  gap: 12px;
}

.heart {
  color: #ef4444;
  display: inline-block;
  animation: heart-beat 1.8s ease infinite;
}

@keyframes heart-beat {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

.oss-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted-2);
  transition: color 0.15s ease;
}

.oss-link:hover {
  color: var(--fg);
}

.oss-link strong {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.fork-icon {
  width: 14px;
  height: 14px;
  opacity: 0.8;
  display: inline-block;
  vertical-align: middle;
}

/* Floating Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--toast-bg);
  color: var(--toast-fg);
  border: 1px solid var(--toast-border);
  padding: 10px 18px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  pointer-events: none;
  opacity: 0;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
  z-index: 1000;
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast-icon {
  color: var(--green);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
}

/* Accessibility Focus States */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Responsive Media Queries */
@media (max-width: 600px) {
  .cards {
    grid-template-columns: 1fr;
  }
  h1 {
    font-size: 22px;
  }
  .site-header {
    padding-top: 24px;
  }
  .wrap {
    padding: 28px 18px 44px;
  }
  .site-footer {
    padding: 20px 18px 36px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

@media (max-width: 420px) {
  h1 {
    font-size: 20px;
  }
  .wrap {
    padding: 24px 14px 36px;
  }
  .site-header {
    padding: 20px 14px 0;
  }
  .site-footer {
    padding: 18px 14px 30px;
  }
  .btn {
    padding: 8px 14px;
    font-size: 13px;
  }
  .cta-row {
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}