/* Reset & base */
* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
}

section[id] {
  scroll-margin-top: 76px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-2);
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 var(--space-2);
}

/* Header & nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition:
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

.site-header.is-scrolled {
  box-shadow: 0 4px 20px var(--color-shadow);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-2);
  gap: var(--space-2);
}

.nav .logo {
  font-weight: 700;
  font-size: var(--fz-lg);
  color: var(--color-text);
}

.nav-links {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-3);
}

.nav-links a {
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: var(--fz-sm);
  position: relative;
  padding-block: 0.25rem;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: right var(--transition-base);
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--color-text);
}

.nav-links a.is-active::after {
  right: 0;
}

@media (min-width: 720px) {
  .nav-links {
    display: flex;
  }
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.accent-picker-wrap {
  position: relative;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-alt);
  color: var(--color-text);
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast);
}

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

.theme-toggle .icon {
  width: 20px;
  height: 20px;
}

/* Show the icon for the theme you'd switch TO */
.theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

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

/* Accent color picker */
.accent-popover {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-1);
  padding: var(--space-2);
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 6px 16px var(--color-shadow);
}

/* The class rule above beats the browser's default [hidden] rule on specificity;
   this re-asserts it so toggling the "hidden" attribute actually hides the popover. */
.accent-popover[hidden] {
  display: none;
}

.accent-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  background-color: var(--swatch);
  cursor: pointer;
  padding: 0;
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast);
}

.accent-swatch:hover {
  transform: scale(1.1);
}

.accent-swatch[aria-pressed="true"] {
  border-color: var(--color-text);
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(
      ellipse 60% 50% at 15% 10%,
      color-mix(
        in srgb,
        var(--color-primary) var(--hero-wash-strong),
        transparent
      ),
      transparent 70%
    ),
    radial-gradient(
      ellipse 50% 45% at 85% 30%,
      color-mix(
        in srgb,
        var(--color-primary-hover) var(--hero-wash-soft),
        transparent
      ),
      transparent 70%
    ),
    radial-gradient(
      ellipse 55% 40% at 50% 100%,
      color-mix(
        in srgb,
        var(--color-primary) var(--hero-wash-soft),
        transparent
      ),
      transparent 70%
    );
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-block: var(--space-5) var(--space-4);
  gap: var(--space-2);
}

.scroll-indicator {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  color: var(--color-text-muted);
  padding-bottom: var(--space-3);
  animation: bob 2s ease-in-out infinite;
}

.scroll-indicator .icon {
  width: 24px;
  height: 24px;
}

@keyframes bob {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
}

.hero-avatar {
  position: relative;
  width: 112px;
  height: 112px;
  border-radius: 50%;
  overflow: hidden;
  background-color: var(--color-bg-alt);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 6px
    color-mix(in srgb, var(--color-primary) 18%, transparent);
}

.avatar-fallback {
  font-size: var(--fz-xl);
  font-weight: 700;
  color: var(--color-text-muted);
}

#profile-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero h1 {
  font-size: var(--fz-xl);
}

.tagline {
  color: var(--color-text-muted);
  font-size: var(--fz-lg);
  margin: 0;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--fz-sm);
  overflow: hidden;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    transparent 20%,
    color-mix(in srgb, white 35%, transparent) 50%,
    transparent 80%
  );
  transform: translateX(-120%);
  transition: transform 0.6s ease;
}

.btn:hover::after {
  transform: translateX(120%);
}

.btn .icon {
  width: 18px;
  height: 18px;
}

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

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

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

/* Section spacing */
section {
  padding-block: var(--space-4);
}

.about p {
  max-width: 60ch;
  color: var(--color-text-muted);
}

/* Highlights & projects grids */
.highlight-grid,
.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.highlight-card,
.project-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  box-shadow: 0 1px 3px var(--color-shadow);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.project-card {
  color: inherit;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
  font-size: var(--fz-sm);
  font-weight: 600;
}

.highlight-card:hover,
.project-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(
    in srgb,
    var(--color-primary) 45%,
    var(--color-border)
  );
  box-shadow: 0 10px 24px
    color-mix(in srgb, var(--color-primary) 20%, var(--color-shadow));
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Back to top */
.back-to-top {
  position: fixed;
  right: var(--space-3);
  bottom: var(--space-3);
  z-index: 15;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition:
    opacity var(--transition-base),
    transform var(--transition-base),
    visibility var(--transition-base);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.back-to-top .icon {
  width: 20px;
  height: 20px;
}

.highlight-card h3,
.project-card h3 {
  font-size: var(--fz-lg);
}

.highlight-card p,
.project-card p {
  margin: 0;
  color: var(--color-text-muted);
}

/* Contact */
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.contact-links a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

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

.icon-lg {
  width: 28px;
  height: 28px;
}

/* Footer */
.site-footer {
  text-align: center;
  padding-block: var(--space-3);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--fz-sm);
}

/* Tablet and up */
@media (min-width: 600px) {
  .highlight-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-content {
    padding-block: var(--space-5);
  }
}

/* Desktop and up */
@media (min-width: 900px) {
  .highlight-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Interactive terminal easter egg */
.terminal-toggle {
  position: fixed;
  left: var(--space-3);
  bottom: var(--space-3);
  z-index: 15;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-alt);
  color: var(--color-text);
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast);
}

.terminal-toggle:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.terminal-toggle .icon {
  width: 20px;
  height: 20px;
}

.terminal-window {
  width: min(640px, calc(100vw - 2rem));
  max-height: min(80vh, calc(100vh - 2rem));
  margin: auto;
  padding: 0;
  border: none;
  background-color: #0c0c0c;
  color: #cccccc;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  font-family:
    "Cascadia Code", "SFMono-Regular", Consolas, "Courier New", monospace;
}

/* Scoped to [open] so it doesn't fight the browser's default `dialog:not([open])` rule */
.terminal-window[open] {
  display: flex;
  flex-direction: column;
}

.terminal-window::backdrop {
  background-color: rgba(10, 11, 14, 0.6);
  backdrop-filter: blur(4px);
}

.terminal-titlebar {
  display: flex;
  align-items: center;
  padding-left: var(--space-2);
  background-color: #1f1f1f;
  border-bottom: 1px solid #2d2d2d;
}

.terminal-title {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--fz-sm);
  color: #cccccc;
}

.terminal-title .icon {
  width: 15px;
  height: 15px;
  color: #3b9eff;
}

.terminal-controls {
  display: flex;
  align-items: stretch;
  height: 32px;
}

.terminal-control {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  border: none;
  background: none;
  color: #cccccc;
  font-size: 0.9rem;
  line-height: 1;
  cursor: default;
  padding: 0;
  transition: background-color var(--transition-fast);
}

button.terminal-control {
  cursor: pointer;
}

.terminal-control:hover {
  background-color: #333333;
}

.terminal-control-close {
  font-size: 1.1rem;
}

.terminal-control-close:hover {
  background-color: #e81123;
  color: #ffffff;
}

.terminal-output {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-2);
  font-size: 0.85rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.terminal-output .t-line {
  margin: 0 0 0.2rem;
}

.terminal-output .t-cmd {
  color: #3b9eff;
}

.terminal-output .t-error {
  color: #ff8787;
}

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

.terminal-input-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem var(--space-2);
  border-top: 1px solid #2d2d2d;
}

.terminal-prompt {
  color: #3b9eff;
  font-size: 0.85rem;
  white-space: nowrap;
}

.terminal-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: #cccccc;
  font: inherit;
  font-size: 0.85rem;
}