/* ═══════════════════════════════════════════════════
   stanleychan87 — 终端风格个人主页
   VS Code / Terminal Aesthetic Dark Theme
   ═══════════════════════════════════════════════════ */

/* ─── Reset & Base ─── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Color palette — VS Code Dark+ inspired */
  --bg-primary: #1e1e1e;
  --bg-secondary: #252526;
  --bg-tertiary: #2d2d2d;
  --bg-hover: #37373d;
  --bg-active: #094771;
  --bg-terminal: #1a1a1a;
  --bg-input: #3c3c3c;

  --border-color: #3c3c3c;
  --border-light: #4a4a4a;

  --text-primary: #cccccc;
  --text-secondary: #999999;
  --text-muted: #6a6a6a;
  --text-bright: #ffffff;

  --accent-green: #4ec9b0;
  --accent-blue: #569cd6;
  --accent-yellow: #dcdcaa;
  --accent-orange: #ce9178;
  --accent-purple: #c586c0;
  --accent-red: #f44747;
  --accent-cyan: #9cdcfe;

  --terminal-green: #4ec9b0;
  --terminal-prompt: #569cd6;
  --terminal-error: #f44747;
  --terminal-warning: #dcdcaa;
  --terminal-info: #9cdcfe;

  --scrollbar-thumb: #424242;
  --scrollbar-track: #1e1e1e;

  /* Typography */
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', 'Courier New', monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 13px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 20px;
  --font-size-2xl: 28px;

  /* Layout */
  --top-bar-height: 38px;
  --terminal-height: 180px;
  --explorer-width: 260px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-mono);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow: hidden;
  height: 100vh;
  height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* ─── #app Container ─── */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  background: var(--bg-primary);
}

/* ═══════════════════════════════════════════════════
   TOP STATUS BAR
   ═══════════════════════════════════════════════════ */
#top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--top-bar-height);
  padding: 0 14px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
  user-select: none;
  gap: 12px;
}

.top-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.logo-icon {
  font-size: var(--font-size-lg);
  color: var(--accent-green);
  opacity: 0.8;
}

.logo-text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.top-center {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  justify-content: center;
  min-width: 0;
}

.status-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  white-space: nowrap;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot.green {
  background: var(--accent-green);
  box-shadow: 0 0 4px var(--accent-green);
}

.status-dot.blue {
  background: var(--accent-blue);
  box-shadow: 0 0 4px var(--accent-blue);
}

.playing-text, .loc-text {
  color: var(--text-primary);
}

.top-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 4px;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.social-link:hover {
  color: var(--text-bright);
  background: var(--bg-hover);
  transform: translateY(-1px);
}

.social-link svg {
  width: 18px;
  height: 18px;
}

/* ═══════════════════════════════════════════════════
   MAIN LAYOUT (Explorer + Content)
   ═══════════════════════════════════════════════════ */
#main-layout {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* ─── File Explorer ─── */
#explorer {
  width: var(--explorer-width);
  min-width: 180px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width var(--transition-normal);
  overflow: hidden;
}

#explorer.collapsed {
  width: 0;
  min-width: 0;
  border-right: none;
}

.explorer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
  user-select: none;
  flex-shrink: 0;
}

.explorer-title {
  font-weight: 600;
}

#close-explorer {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  padding: 2px 6px;
  border-radius: 3px;
  transition: all var(--transition-fast);
}

#close-explorer:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

#file-tree {
  flex: 1;
  overflow-y: auto;
  padding: 4px 0;
  user-select: none;
}

/* File tree items */
.tree-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 12px;
  padding-left: calc(12px + var(--depth, 0) * 16px);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tree-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.tree-item.active {
  background: var(--bg-active);
  color: var(--text-bright);
}

.tree-item .icon {
  flex-shrink: 0;
  font-size: var(--font-size-base);
}

.tree-item .chevron {
  flex-shrink: 0;
  font-size: 10px;
  width: 14px;
  text-align: center;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.tree-item .chevron.expanded {
  transform: rotate(90deg);
}

.tree-item .name {
  overflow: hidden;
  text-overflow: ellipsis;
}

.tree-children {
  display: none;
}

.tree-children.expanded {
  display: block;
}

.tree-item.file-item .icon {
  color: var(--accent-cyan);
}

.tree-item.folder-item .icon {
  color: var(--accent-yellow);
}

.tree-item.folder-item.open .icon {
  color: var(--accent-orange);
}

/* ─── Content Panel ─── */
#content-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--bg-primary);
  overflow: hidden;
}

.content-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 16px;
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  user-select: none;
  flex-shrink: 0;
}

#preview-tab {
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.file-path {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
}

#preview-content {
  flex: 1;
  overflow-y: auto;
  padding: 32px 40px;
}

/* Empty state */
#empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  text-align: center;
  gap: 12px;
}

#empty-state .empty-icon {
  font-size: 48px;
  opacity: 0.3;
  margin-bottom: 8px;
}

#empty-state p {
  font-size: var(--font-size-md);
}

.empty-hint {
  font-size: var(--font-size-xs) !important;
  color: var(--text-muted);
  opacity: 0.6;
}

/* ─── Content Markdown Rendering ─── */
.content-markdown h1 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  line-height: 1.3;
}

.content-markdown h2 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--accent-cyan);
  margin: 24px 0 12px;
  line-height: 1.4;
}

.content-markdown h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--accent-yellow);
  margin: 20px 0 10px;
}

.content-markdown p {
  margin-bottom: 14px;
  line-height: 1.8;
}

.content-markdown a {
  color: var(--accent-blue);
  text-decoration: none;
  border-bottom: 1px dotted var(--border-light);
  transition: all var(--transition-fast);
}

.content-markdown a:hover {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

.content-markdown ul, .content-markdown ol {
  margin: 8px 0 16px;
  padding-left: 24px;
}

.content-markdown li {
  margin-bottom: 4px;
  line-height: 1.7;
}

.content-markdown code {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--accent-orange);
}

.content-markdown pre {
  background: var(--bg-terminal);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 16px;
  margin: 12px 0 20px;
  overflow-x: auto;
}

.content-markdown pre code {
  background: none;
  padding: 0;
  color: var(--accent-green);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.content-markdown blockquote {
  border-left: 3px solid var(--accent-blue);
  padding: 8px 16px;
  margin: 12px 0;
  background: var(--bg-tertiary);
  border-radius: 0 4px 4px 0;
  color: var(--text-secondary);
}

.content-markdown hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 24px 0;
}

.content-markdown img {
  max-width: 100%;
  border-radius: 6px;
  margin: 12px 0;
}

.content-markdown table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 20px;
  font-size: var(--font-size-sm);
}

.content-markdown th {
  background: var(--bg-tertiary);
  color: var(--accent-cyan);
  padding: 8px 12px;
  text-align: left;
  border: 1px solid var(--border-color);
  font-weight: 600;
}

.content-markdown td {
  padding: 6px 12px;
  border: 1px solid var(--border-color);
}

.content-markdown tr:hover {
  background: var(--bg-hover);
}

.content-markdown strong {
  color: var(--text-bright);
  font-weight: 600;
}

.content-markdown em {
  color: var(--accent-purple);
}

/* ─── Typewriter Effect ─── */
.typewriter-line {
  overflow: hidden;
  white-space: nowrap;
  border-right: 2px solid var(--accent-green);
  animation: typewriter 0.8s steps(30) forwards, blink-caret 0.8s step-end infinite;
  width: 0;
}

@keyframes typewriter {
  to {
    width: 100%;
  }
}

@keyframes blink-caret {
  50% {
    border-color: transparent;
  }
}

.typewriter-done {
  border-right: none;
}

/* ─── Tag Badges ─── */
.tag-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  padding: 2px 8px;
  border-radius: 3px;
  margin: 2px 4px 2px 0;
  border: 1px solid var(--border-light);
}

.tag-badge.green {
  color: var(--accent-green);
  border-color: rgba(78, 201, 176, 0.3);
  background: rgba(78, 201, 176, 0.08);
}

.tag-badge.blue {
  color: var(--accent-blue);
  border-color: rgba(86, 156, 214, 0.3);
  background: rgba(86, 156, 214, 0.08);
}

.tag-badge.yellow {
  color: var(--accent-yellow);
  border-color: rgba(220, 220, 170, 0.3);
  background: rgba(220, 220, 170, 0.08);
}

.tag-badge.purple {
  color: var(--accent-purple);
  border-color: rgba(197, 134, 192, 0.3);
  background: rgba(197, 134, 192, 0.08);
}

.tag-badge.orange {
  color: var(--accent-orange);
  border-color: rgba(206, 145, 120, 0.3);
  background: rgba(206, 145, 120, 0.08);
}

.tag-badge.red {
  color: var(--accent-red);
  border-color: rgba(244, 71, 71, 0.3);
  background: rgba(244, 71, 71, 0.08);
}

/* ─── Stat Cards ─── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.stat-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 14px;
  text-align: center;
  transition: all var(--transition-fast);
}

.stat-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.stat-card .stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--accent-cyan);
  line-height: 1.2;
}

.stat-card .stat-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: 4px;
}

/* ─── Project Cards ─── */
.project-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 18px 20px;
  margin: 12px 0;
  transition: all var(--transition-normal);
}

.project-card:hover {
  border-color: var(--accent-green);
  transform: translateX(4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.project-card .project-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--accent-green);
  margin-bottom: 6px;
}

.project-card .project-title a {
  color: inherit;
  text-decoration: none;
}

.project-card .project-title a:hover {
  color: var(--text-bright);
  border-bottom: 1px solid var(--accent-green);
}

.project-card .project-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.6;
}

.project-card .project-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  flex-wrap: wrap;
}

.project-card .project-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.project-card .star-count {
  color: var(--accent-yellow);
}

.project-card .fork-count {
  color: var(--accent-blue);
}

.project-card .lang-tag {
  color: var(--accent-orange);
}

/* ─── Blog Post Item ─── */
.blog-item {
  padding: 14px 16px;
  margin: 8px 0;
  border-left: 3px solid var(--accent-blue);
  background: var(--bg-tertiary);
  border-radius: 0 6px 6px 0;
  transition: all var(--transition-fast);
}

.blog-item:hover {
  border-left-color: var(--accent-cyan);
  background: var(--bg-hover);
}

.blog-item .blog-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 4px;
}

.blog-item .blog-date {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-bottom: 4px;
}

.blog-item .blog-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ─── Profile Section ─── */
.profile-section {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.profile-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 2px solid var(--accent-green);
  flex-shrink: 0;
  object-fit: cover;
  transition: all var(--transition-normal);
}

.profile-avatar:hover {
  border-color: var(--accent-cyan);
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(78, 201, 176, 0.2);
}

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

.profile-name {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 4px;
}

.profile-bio {
  font-size: var(--font-size-md);
  color: var(--accent-green);
  margin-bottom: 8px;
}

.profile-details {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: 4px;
}

.profile-detail-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
}

.profile-detail-item .detail-icon {
  color: var(--text-muted);
}

.profile-detail-item .detail-value {
  color: var(--accent-cyan);
}

/* ─── Contact Section ─── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.contact-item:hover {
  border-color: var(--accent-blue);
  background: var(--bg-hover);
  transform: translateY(-2px);
}

.contact-item .contact-icon {
  width: 20px;
  height: 20px;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.contact-item .contact-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.contact-item .contact-value {
  font-size: var(--font-size-sm);
  color: var(--text-bright);
}

/* ═══════════════════════════════════════════════════
   BOTTOM TERMINAL
   ═══════════════════════════════════════════════════ */
#terminal {
  flex-shrink: 0;
  background: var(--bg-terminal);
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 14px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  user-select: none;
}

.terminal-tab {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  font-weight: 600;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dots .dot.red {
  background: #ff5f57;
}
.terminal-dots .dot.yellow {
  background: #ffbd2e;
}
.terminal-dots .dot.green {
  background: #28c840;
}

#terminal-body {
  display: flex;
  flex-direction: column;
  height: var(--terminal-height);
  overflow: hidden;
}

#terminal-output {
  flex: 1;
  overflow-y: auto;
  padding: 8px 14px;
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.terminal-line {
  margin-bottom: 2px;
  word-break: break-all;
}

/* Prompt styling */
.prompt-user {
  color: var(--accent-green);
  font-weight: 600;
}
.prompt-at {
  color: var(--text-secondary);
}
.prompt-host {
  color: var(--accent-blue);
}
.prompt-colon {
  color: var(--text-secondary);
}
.prompt-path {
  color: var(--accent-yellow);
}
.prompt-dollar {
  color: var(--text-secondary);
  margin-right: 8px;
}
.prompt-welcome {
  color: var(--text-secondary);
}

.cmd-hl {
  color: var(--accent-cyan);
  font-weight: 600;
}

.cmd-error {
  color: var(--terminal-error);
}

.cmd-success {
  color: var(--accent-green);
}

.cmd-info {
  color: var(--terminal-info);
}

.cmd-warning {
  color: var(--terminal-warning);
}

/* Terminal input line */
.terminal-input-line {
  display: flex;
  align-items: center;
  padding: 4px 14px 8px;
  font-size: var(--font-size-sm);
  gap: 0;
}

#terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  outline: none;
  caret-color: transparent;
  min-width: 0;
}

.cursor-blink {
  color: var(--text-primary);
  animation: terminal-blink 1s step-end infinite;
  font-size: var(--font-size-sm);
  line-height: 1;
}

@keyframes terminal-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════ */

/* Tablet */
@media (max-width: 900px) {
  :root {
    --explorer-width: 220px;
  }

  #preview-content {
    padding: 24px 20px;
  }

  .profile-section {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .profile-details {
    justify-content: center;
  }

  .top-center .status-item:nth-child(2) {
    display: none;
  }
}

/* Mobile */
@media (max-width: 640px) {
  :root {
    --explorer-width: 100%;
    --terminal-height: 140px;
    --top-bar-height: 32px;
  }

  #main-layout {
    flex-direction: column;
  }

  #explorer {
    width: 100% !important;
    min-width: 0;
    max-height: 40vh;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  #explorer.collapsed {
    max-height: 0;
  }

  #file-tree {
    max-height: calc(40vh - 36px);
  }

  #content-panel {
    flex: 1;
    min-height: 0;
  }

  #preview-content {
    padding: 16px 14px;
  }

  .top-center {
    display: none;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .profile-avatar {
    width: 80px;
    height: 80px;
  }

  .content-markdown h1 {
    font-size: var(--font-size-xl);
  }

  .content-markdown h2 {
    font-size: var(--font-size-lg);
  }

  .project-card {
    padding: 14px;
  }
}

/* ═══════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════ */

/* Fade in */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.3s ease forwards;
}

/* Slide in from left */
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Glow pulse on active items */
@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 4px rgba(78, 201, 176, 0.2); }
  50% { box-shadow: 0 0 12px rgba(78, 201, 176, 0.4); }
}

/* ─── Utility ─── */
.hidden {
  display: none !important;
}

.no-select {
  user-select: none;
}

/* Prevent FOUC */
#preview-content:not(:empty) #empty-state {
  display: none;
}