/* ============================================
   RETRO TERMINAL / CRT AESTHETIC
   Pythonista theme — #00FF41 matrix green
   ============================================ */

:root {
  --matrix-green: #00FF41;
  --dark-green: #008F11;
  --bg: #0a0a0a;
  --bg-panel: #0d0d0d;
  --glow: rgba(0, 255, 65, 0.3);
  --scanline-opacity: 0.06;
  --crt-flicker: 0.02;
}

* {
  box-sizing: border-box;
}

body {
  background-color: var(--bg);
  color: var(--matrix-green);
  font-family: 'Courier New', Courier, monospace;
  line-height: 1.5;
  margin: 0;
  padding: 20px;
  text-shadow: 0 0 5px var(--dark-green);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* CRT screen effect wrapper */
.crt-screen {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
  border: 2px solid var(--matrix-green);
  padding: 24px 30px;
  box-shadow: 
    0 0 20px var(--glow),
    inset 0 0 60px rgba(0, 255, 65, 0.03);
  background: var(--bg-panel);
}

/* Scanline overlay — horizontal lines */
.crt-screen::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, var(--scanline-opacity)) 2px,
    rgba(0, 0, 0, var(--scanline-opacity)) 4px
  );
  pointer-events: none;
  z-index: 20;
}

/* Vertical scanline sweep animation */
.scanline-sweep {
  width: 100%;
  height: 4px;
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(0, 255, 65, 0.15),
    transparent
  );
  position: fixed;
  left: 0;
  z-index: 15;
  pointer-events: none;
  animation: scanline-move 8s linear infinite;
}

@keyframes scanline-move {
  from { top: 0; }
  to { top: 100%; }
}

/* CRT flicker */
@keyframes crt-flicker {
  0%, 100% { opacity: 1; }
  50% { opacity: calc(1 - var(--crt-flicker)); }
}

.crt-screen {
  animation: crt-flicker 0.15s infinite;
}

/* Headers — Python-style syntax */
.code-keyword { color: #ff79c6; }
.code-func { color: #50fa7b; }
.code-string { color: #f1fa8c; }
.code-comment { color: #6272a4; font-style: italic; }

header {
  border-bottom: 1px solid var(--matrix-green);
  padding-bottom: 20px;
  margin-bottom: 24px;
}

h1 {
  font-size: 1.8rem;
  margin: 0 0 8px 0;
  color: var(--matrix-green);
}

.subtitle {
  color: var(--dark-green);
  font-size: 0.95rem;
}

section {
  margin-bottom: 36px;
}

h2 {
  border-left: 4px solid var(--matrix-green);
  padding-left: 12px;
  font-size: 1.15rem;
  margin-bottom: 12px;
}

/* Cards */
.project-card,
.job-card,
.publication-card {
  margin-bottom: 16px;
  padding: 12px 14px;
  border: 1px dashed var(--dark-green);
  background: rgba(0, 143, 17, 0.04);
}

.project-card:hover,
.job-card:hover,
.publication-card:hover {
  box-shadow: 0 0 12px var(--glow);
}

a {
  color: var(--matrix-green);
  text-decoration: underline;
  transition: color 0.2s, background 0.2s;
}

a:hover {
  background: var(--matrix-green);
  color: var(--bg);
}

/* ASCII art container */
.ascii-logo {
  white-space: pre;
  font-size: 0.65rem;
  line-height: 1.1;
  color: var(--dark-green);
  margin-bottom: 16px;
  overflow-x: auto;
}

/* Terminal cursor */
.terminal-cursor {
  display: inline-block;
  width: 10px;
  height: 1em;
  background: var(--matrix-green);
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
}

.terminal-prompt {
  color: var(--code-func, #50fa7b);
  margin-bottom: 8px;
}

.terminal-line {
  margin: 2px 0;
  min-height: 1.2em;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* Buttons */
.btn-terminal {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--matrix-green);
  background: transparent;
  color: var(--matrix-green);
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-terminal:hover {
  background: var(--matrix-green);
  color: var(--bg);
  box-shadow: 0 0 12px var(--glow);
}

/* Footer */
footer {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px dashed var(--dark-green);
  font-size: 0.9rem;
  color: var(--dark-green);
}

/* Nav links */
nav a {
  margin-right: 12px;
}

/* CV viewer modal — hidden by default; add .is-open to show */
.cv-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.cv-modal.is-open {
  display: flex;
}

.cv-modal-backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: rgba(0, 0, 0, 0.92);
  cursor: pointer;
}

.cv-modal-box {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 900px;
  height: 90vh;
  border: 2px solid var(--matrix-green);
  background: var(--bg-panel);
  box-shadow: 0 0 30px var(--glow);
  display: flex;
  flex-direction: column;
}

.cv-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--matrix-green);
  flex-shrink: 0;
}

.cv-modal-close {
  padding: 4px 12px;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
}

.cv-pdf-wrap {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: #444;
}

.cv-iframe {
  flex: 1;
  width: 100%;
  min-height: 400px;
  border: none;
  background: #fff;
}

.cv-pdf-fallback {
  padding: 20px;
  color: var(--matrix-green);
  text-align: center;
  margin: 0;
}

/* Commit activity chart — retro grid */
.commit-chart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 80px;
  margin: 12px 0;
}

.commit-bar {
  flex: 1;
  min-width: 8px;
  height: var(--h, 0%);
  min-height: 4px;
  background: var(--matrix-green);
  box-shadow: 0 0 6px var(--glow);
  transition: height 0.3s ease;
}

.git-log-line {
  font-size: 0.85rem;
  margin: 4px 0;
  padding: 2px 0;
  border-left: 2px solid var(--dark-green);
  padding-left: 8px;
}

/* Teaching page — 1980s monitor + video grid */
.retro-monitor {
  border: 12px solid #1a1a1a;
  border-radius: 8px;
  padding: 12px;
  background: #0a0a0a;
  box-shadow: 
    inset 0 0 30px rgba(0, 0, 0, 0.5),
    0 8px 24px rgba(0, 0, 0, 0.4);
  margin: 20px 0;
}

.retro-monitor-screen {
  position: relative;
  aspect-ratio: 4/3;
  max-height: 400px;
  background: #000;
  border: 3px solid var(--dark-green);
  overflow: hidden;
}

.retro-monitor-screen iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

#monitor-placeholder {
  padding: 20px;
  color: var(--dark-green);
  text-align: center;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.video-tile {
  border: 1px solid var(--dark-green);
  background: rgba(0, 20, 0, 0.3);
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.video-tile:hover {
  box-shadow: 0 0 16px var(--glow);
}

.video-tile a {
  display: block;
  text-decoration: none;
  color: inherit;
}

.video-tile .thumb {
  aspect-ratio: 16/9;
  background: #111;
  position: relative;
}

.video-tile .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-tile .label {
  padding: 10px 12px;
  font-size: 0.9rem;
  border-top: 1px dashed var(--dark-green);
}

.video-tile .label:hover {
  background: rgba(0, 255, 65, 0.08);
}

/* Repos list from GitHub */
.repos-list .project-card a {
  text-decoration: underline;
}

.teaching-playlist-link {
  margin-top: 12px;
}

/* Awards list */
.award-card {
  margin-bottom: 20px;
}

/* ========== Responsive ========== */
@media (max-width: 900px) {
  .crt-screen {
    padding: 20px;
    max-width: 100%;
  }
  .cv-modal-box {
    max-width: 100%;
    height: 85vh;
  }
}

@media (max-width: 640px) {
  body {
    padding: 12px;
  }
  .crt-screen {
    padding: 14px;
    border-width: 1px;
  }
  header nav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 4px;
  }
  nav a {
    margin-right: 0;
    font-size: 0.85rem;
  }
  h1 {
    font-size: 1.4rem;
  }
  .subtitle {
    font-size: 0.85rem;
  }
  h2 {
    font-size: 1rem;
    padding-left: 8px;
  }
  .ascii-logo {
    font-size: 0.5rem;
  }
  .video-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .retro-monitor {
    padding: 8px;
  }
  .retro-monitor-screen {
    max-height: 220px;
  }
  .btn-terminal {
    padding: 6px 12px;
    font-size: 0.85rem;
  }
  .cv-modal {
    padding: 10px;
  }
  .cv-modal-box {
    height: 80vh;
  }
  .cv-modal-header {
    padding: 8px 10px;
    flex-wrap: wrap;
  }
  .cv-modal-header .code-comment {
    font-size: 0.75rem;
    word-break: break-word;
  }
  .project-card,
  .job-card,
  .publication-card,
  .award-card {
    padding: 10px 12px;
    font-size: 0.9rem;
  }
  .commit-chart {
    height: 60px;
  }
  .git-log-line {
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  body {
    padding: 8px;
  }
  .crt-screen {
    padding: 10px;
  }
  h1 {
    font-size: 1.2rem;
  }
  .ascii-logo {
    font-size: 0.45rem;
  }
}