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

/* ── Theme Variables ── */
:root {
  --transition-speed: 0.35s;
}

[data-theme="light"] {
  --bg: #fafaf8;
  --bg-card: #f4f3ef;
  --text: #1c1b18;
  --accent: #4a4a48;
  --accent-warm: #2d6a4f;
  --muted: #555550;
  --border: #d4d4d4;
  --modal-bg: #ffffff;
  --modal-overlay: rgba(26, 26, 24, 0.5);
  --code-bg: #eceae4;
  --tag-bg: #e4e3de;
  --tag-text: #4a4a48;
  --lab-bg: #f5e6a3;
  --lab-text: #6b5c10;
  --live-bg: #2d6a4f;
  --live-text: #ffffff;
  --live-dot: #6ee7a8;
  --complete-bg: #2d6a4f;
  --complete-text: #ffffff;
}

[data-theme="dark"] {
  --bg: #0e0e0d;
  --bg-card: #161615;
  --text: #f0ece4;
  --accent: #a0a09a;
  --accent-warm: #52d89f;
  --muted: #9a9790;
  --border: #2a2a28;
  --modal-bg: #1a1a18;
  --modal-overlay: rgba(0, 0, 0, 0.65);
  --code-bg: #1e1e1c;
  --tag-bg: #252522;
  --tag-text: #a0a09a;
  --lab-bg: #4a4220;
  --lab-text: #f0d850;
  --live-bg: #52d89f;
  --live-text: #0e0e0d;
  --live-dot: #0e0e0d;
  --complete-bg: #52d89f;
  --complete-text: #0e0e0d;
}

/* ── Base ── */
body {
  font-family: "Manrope", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 15px;
  transition:
    background var(--transition-speed) ease,
    color var(--transition-speed) ease;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 60px 24px;
}

/* ── Theme Toggle ── */
.theme-toggle {
  position: fixed;
  top: 24px;
  right: 28px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.toggle-track {
  width: 44px;
  height: 24px;
  background: var(--border);
  border-radius: 12px;
  position: relative;
  cursor: pointer;
  transition: background 0.3s ease;
}

.toggle-track:hover {
  background: var(--muted);
}

.toggle-thumb {
  width: 18px;
  height: 18px;
  background: var(--text);
  border-radius: 50%;
  position: absolute;
  top: 3px;
  left: 3px;
  transition: transform 0.3s ease;
}

[data-theme="dark"] .toggle-thumb {
  transform: translateX(20px);
}

/* ── Back Link ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 32px;
  transition: color 0.2s;
}

.back-link::before {
  content: "\2190";
}
.back-link:hover {
  color: var(--accent-warm);
}

/* ── Header ── */
header {
  margin-bottom: 52px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

h1 {
  font-family: "JetBrains Mono", monospace;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.page-desc {
  color: var(--muted);
  font-size: 15px;
  max-width: 540px;
}

/* ── Project Cards ── */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  margin-bottom: 24px;
  overflow: hidden;
  transition: border-color 0.3s ease;
}

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

.card-header {
  padding: 24px 28px 20px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.card-info {
  flex: 1;
  min-width: 0;
}

.card-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: var(--accent-warm);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
  font-weight: 500;
}

.card-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.card-desc {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

/* ── Badges ── */
.badge {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  white-space: nowrap;
  flex-shrink: 0;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.badge.lab {
  background: var(--lab-bg);
  color: var(--lab-text);
}

.badge.live {
  background: var(--live-bg);
  color: var(--live-text);
}

.badge.live .pulse-dot {
  width: 6px;
  height: 6px;
  background: var(--live-dot);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

.badge.complete {
  background: var(--complete-bg);
  color: var(--complete-text);
}

/* ── Tags ── */
.card-tags {
  padding: 10px 28px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  padding: 3px 8px;
  background: var(--tag-bg);
  color: var(--tag-text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ── Actions ── */
.card-actions {
  padding: 12px 28px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 16px;
  align-items: center;
}

.action-link {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  text-decoration: none;
  color: var(--accent-warm);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  letter-spacing: 0.02em;
  transition: opacity 0.2s;
}

.action-link:hover {
  opacity: 0.7;
}

.sep {
  width: 1px;
  height: 14px;
  background: var(--border);
}

/* ── Modal ── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--modal-overlay);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-overlay.visible {
  display: flex;
  opacity: 1;
}

.modal {
  background: var(--modal-bg);
  border: 1px solid var(--border);
  max-width: 700px;
  width: 100%;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  transform: translateY(16px);
  transition: transform 0.3s ease;
}

.modal-overlay.visible .modal {
  transform: translateY(0);
}

.modal-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
  background: var(--code-bg);
}

.modal-filename {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-filename .icon {
  color: var(--accent-warm);
  font-size: 14px;
}

.modal-close {
  font-family: "JetBrains Mono", monospace;
  font-size: 18px;
  color: var(--muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 8px;
  transition: color 0.2s;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text);
}

.modal-body {
  padding: 28px 24px;
  overflow-y: auto;
  flex: 1;
}

/* ── Markdown in Modal ── */
.md h3 {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-warm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  margin-top: 28px;
}

.md h3:first-child {
  margin-top: 0;
}

.md p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 14px;
  line-height: 1.7;
}

.md ul {
  margin: 8px 0 16px 20px;
  color: var(--muted);
  font-size: 14px;
}

.md li {
  margin-bottom: 6px;
  line-height: 1.6;
}

.md code {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  background: var(--code-bg);
  padding: 2px 7px;
  color: var(--text);
}

.md pre {
  background: var(--code-bg);
  padding: 16px 20px;
  margin: 12px 0 16px;
  overflow-x: auto;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text);
}

/* ── Footer ── */
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.footer-tagline {
  font-style: italic;
  text-align: right;
}

/* ── Animations ── */
.fade-in {
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 0.5s ease forwards;
}

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

.project-card:nth-of-type(1) {
  animation-delay: 0.05s;
}
.project-card:nth-of-type(2) {
  animation-delay: 0.1s;
}
.project-card:nth-of-type(3) {
  animation-delay: 0.15s;
}
.project-card:nth-of-type(4) {
  animation-delay: 0.2s;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .container {
    padding: 40px 16px;
  }
  h1 {
    font-size: 20px;
  }
  .card-header {
    padding: 20px;
    flex-direction: column;
    gap: 10px;
  }
  .card-tags,
  .card-actions {
    padding-left: 20px;
    padding-right: 20px;
  }
  .modal {
    max-height: 90vh;
  }
  .modal-body {
    padding: 20px;
  }
  .theme-toggle {
    top: 12px;
    right: 16px;
  }
  .theme-toggle span {
    display: none;
  }
}