/* ========================================
   Bedic.tech Design System — Purple Edition
   Clean, modern personal blog/wiki/todo
   ======================================== */

:root {
  --bg: #faf8ff;
  --bg-secondary: #f3f0ff;
  --bg-tertiary: #ede9fe;
  --text: #1e1b4b;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  --border: #e5e1f5;
  --accent: #7c3aed;
  --accent-hover: #6d28d9;
  --accent-light: #ede9fe;
  --tag-bg: #f3e8ff;
  --tag-text: #7c3aed;
  --card-bg: #ffffff;
  --card-shadow: 0 1px 3px rgba(124, 58, 237, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --card-shadow-hover: 0 8px 25px rgba(124, 58, 237, 0.15), 0 4px 10px rgba(0, 0, 0, 0.05);
  --nav-bg: rgba(250, 248, 255, 0.82);
  --code-bg: #f5f3ff;
  --pri-urgent: #ef4444;
  --pri-high: #f59e0b;
  --pri-medium: #6b7280;
  --pri-low: #7c3aed;
  --success: #22c55e;
  --hero-overlay: linear-gradient(to bottom, rgba(88, 28, 135, 0.65) 0%, rgba(30, 15, 60, 0.82) 100%);
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --container: 48rem;
  --container-wide: 68rem;
  --nav-height: 3.5rem;
  --radius: 12px;
  --radius-sm: 6px;
  --transition: 0.2s ease;
}

[data-theme="dark"] {
  --bg: #0c0a1d;
  --bg-secondary: #13112b;
  --bg-tertiary: #1c1a36;
  --text: #e8e5f5;
  --text-secondary: #a5a0c4;
  --text-tertiary: #7872a0;
  --border: #2a2750;
  --accent: #a78bfa;
  --accent-hover: #c4b5fd;
  --accent-light: #1e1548;
  --tag-bg: #1e1548;
  --tag-text: #c4b5fd;
  --card-bg: #13112b;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 8px 25px rgba(167, 139, 250, 0.12), 0 4px 10px rgba(0, 0, 0, 0.3);
  --nav-bg: rgba(12, 10, 29, 0.82);
  --code-bg: #1a1838;
  --hero-overlay: linear-gradient(to bottom, rgba(30, 10, 60, 0.75) 0%, rgba(12, 10, 29, 0.92) 100%);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + 1rem); }

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition), color var(--transition);
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(124, 58, 237, 0.08);
  transition: background var(--transition), border-color var(--transition);
}

.logo {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo:hover { color: var(--accent); }

.nav-links { display: flex; align-items: center; gap: 1.25rem; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--accent); }

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.45rem;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
  color: var(--text);
  transition: all var(--transition);
}
.theme-toggle:hover { background: var(--accent-light); border-color: var(--accent); }

.container { max-width: var(--container); margin: 0 auto; padding: 2.5rem 1.5rem; }
.container-wide { max-width: var(--container-wide); margin: 0 auto; padding: 2.5rem 1.5rem; }

.hero {
  position: relative;
  min-height: 45vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: var(--nav-height);
  background-image: var(--hero-overlay),
    url('https://images.unsplash.com/photo-1519681393784-d120267933ba?auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center 40%;
  background-attachment: fixed;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 3rem 1.5rem;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, #e9d5ff, #f9a8d4, #c4b5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: rgba(255, 255, 255, 0.75);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.home-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2.5rem;
  align-items: start;
}

.sidebar-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--card-shadow);
  transition: box-shadow var(--transition);
}

.sidebar-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}

.sidebar-stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0;
  font-size: 0.85rem;
}
.sidebar-stat-label { color: var(--text-secondary); }
.sidebar-stat-value { font-weight: 700; color: var(--accent); }

.sidebar-link {
  display: block;
  padding: 0.35rem 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.sidebar-link:hover { color: var(--accent); }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 0.35rem; }

.page-header { margin-bottom: 2rem; padding-top: var(--nav-height); }
.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}
.page-desc { color: var(--text-secondary); font-size: 0.9rem; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.75rem;
  margin: 1.5rem 0 2.5rem;
}
.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
  box-shadow: var(--card-shadow);
  transition: all var(--transition);
}
.stat-card:hover { box-shadow: var(--card-shadow-hover); transform: translateY(-2px); }
.stat-num { font-size: 1.75rem; font-weight: 700; color: var(--accent); }
.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.2rem;
}

.section { margin-bottom: 2.5rem; }
.section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.post-list { display: flex; flex-direction: column; }
.post-card {
  display: block;
  padding: 1.25rem;
  margin-bottom: 0.75rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  box-shadow: var(--card-shadow);
  transition: all var(--transition);
}
.post-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
  color: var(--text);
  border-color: rgba(124, 58, 237, 0.2);
}
.post-card h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  letter-spacing: -0.01em;
  transition: color var(--transition);
}
.post-card:hover h2 { color: var(--accent); }
.post-card .meta {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 0.4rem;
}
.post-card .summary { color: var(--text-secondary); font-size: 0.875rem; line-height: 1.6; }

.tag {
  display: inline-block;
  background: var(--tag-bg);
  color: var(--tag-text);
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 500;
  transition: all var(--transition);
}
.tag:hover { opacity: 0.8; color: var(--tag-text); }
.tags { display: flex; flex-wrap: wrap; gap: 0.3rem; }

.article-header { margin-bottom: 2.5rem; padding-top: var(--nav-height); }
.article-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}
.article-meta {
  color: var(--text-tertiary);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.prose h1, .prose h2, .prose h3, .prose h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 2rem 0 0.75rem;
  line-height: 1.3;
}
.prose h1 { font-size: 1.6rem; }
.prose h2 { font-size: 1.3rem; border-bottom: 1px solid var(--border); padding-bottom: 0.4rem; }
.prose h3 { font-size: 1.1rem; }
.prose p { margin-bottom: 1.15rem; }
.prose ul, .prose ol { margin: 0.75rem 0; padding-left: 1.5rem; }
.prose li { margin-bottom: 0.3rem; }
.prose li::marker { color: var(--text-tertiary); }
.prose img { max-width: 100%; height: auto; border-radius: var(--radius); margin: 1.25rem 0; }
.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.5rem 1rem;
  margin: 1.25rem 0;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.prose pre {
  background: var(--code-bg);
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  margin: 1.25rem 0;
  border: 1px solid var(--border);
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--code-bg);
  padding: 0.15rem 0.3rem;
  border-radius: var(--radius-sm);
}
.prose pre code { background: none; padding: 0; font-size: 1em; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.9rem; }
.prose th, .prose td { padding: 0.5rem 0.75rem; border: 1px solid var(--border); text-align: left; }
.prose th { background: var(--bg-secondary); font-weight: 600; }
.prose a { text-decoration: underline; text-underline-offset: 2px; }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

.wiki-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2.5rem;
  align-items: start;
  padding-top: var(--nav-height);
}
.wiki-sidebar {
  position: sticky;
  top: calc(var(--nav-height) + 2rem);
  max-height: calc(100vh - var(--nav-height) - 4rem);
  overflow-y: auto;
  padding-right: 0.75rem;
}
.wiki-tree { list-style: none; padding: 0; }
.wiki-tree li { padding: 0.15rem 0; }
.wiki-tree a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  display: block;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}
.wiki-tree a:hover { color: var(--text); background: var(--bg-secondary); }
.wiki-tree a.active { color: var(--accent); font-weight: 500; }
.wiki-folder {
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 1rem;
  margin-bottom: 0.3rem;
  padding: 0.2rem 0.5rem;
}
.wiki-folder:first-child { margin-top: 0; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 1rem;
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-tertiary); }

.todo-list { display: flex; flex-direction: column; gap: 0.4rem; }
.todo-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.85rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-left: 3px solid var(--pri-medium);
  font-size: 0.875rem;
  transition: all var(--transition);
}
.todo-item:hover { box-shadow: var(--card-shadow-hover); }
.todo-item.pri-0 { border-left-color: var(--pri-urgent); }
.todo-item.pri-1 { border-left-color: var(--pri-high); }
.todo-item.pri-2 { border-left-color: var(--pri-medium); }
.todo-item.pri-3 { border-left-color: var(--pri-low); }
.todo-item.done { opacity: 0.45; }
.todo-item.done .todo-text { text-decoration: line-through; }

.todo-check {
  flex-shrink: 0;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--border);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
}
.todo-item.done .todo-check { background: var(--success); border-color: var(--success); color: #fff; }
.todo-text { flex: 1; }
.todo-meta { display: flex; align-items: center; gap: 0.4rem; margin-left: auto; flex-shrink: 0; }
.todo-project {
  font-size: 0.7rem;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
}
.todo-due { font-size: 0.75rem; color: var(--text-tertiary); }

.search-form { margin-bottom: 2rem; }
.search-input {
  width: 100%;
  padding: 0.7rem 1rem;
  font-size: 1rem;
  font-family: var(--font-sans);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  outline: none;
  transition: all var(--transition);
}
.search-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-light); }
.search-input::placeholder { color: var(--text-tertiary); }

.result-item { padding: 0.85rem 0; border-bottom: 1px solid var(--border); }
.result-item:last-child { border-bottom: none; }
.result-type {
  font-size: 0.65rem;
  background: var(--accent-light);
  color: var(--accent);
  padding: 0.1rem 0.4rem;
  border-radius: 9999px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.result-title { font-weight: 500; margin-left: 0.4rem; }
.result-count { color: var(--text-tertiary); font-size: 0.85rem; margin-top: 1rem; }

.empty { text-align: center; padding: 3rem 1rem; color: var(--text-tertiary); }
.empty p { margin-bottom: 0.5rem; }
.empty code { font-family: var(--font-mono); font-size: 0.85em; background: var(--bg-secondary); padding: 0.15rem 0.3rem; border-radius: var(--radius-sm); }

.comments-section { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.comments-empty { color: var(--text-tertiary); font-size: 0.9rem; margin-bottom: 1.5rem; }
.comments-list { display: flex; flex-direction: column; gap: 1rem; margin-bottom: 2rem; }
.comment {
  padding: 1rem 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.comment-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.4rem; }
.comment-author { font-size: 0.9rem; }
.comment-date { font-size: 0.75rem; color: var(--text-tertiary); }
.comment-body { font-size: 0.875rem; line-height: 1.6; color: var(--text-secondary); white-space: pre-wrap; }

.comment-form { margin-top: 1.5rem; }
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.3rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.6rem 0.85rem;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  outline: none;
  transition: all var(--transition);
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-light); }
.form-group textarea { resize: vertical; min-height: 5rem; }

.btn {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }

.error-page { text-align: center; padding: 4rem 1rem; padding-top: calc(var(--nav-height) + 4rem); }
.error-code { font-size: 5rem; font-weight: 800; color: var(--accent); line-height: 1; }
.error-title { font-size: 1.5rem; font-weight: 600; margin: 0.5rem 0; }
.error-desc { color: var(--text-secondary); margin-bottom: 1.5rem; }

.htmx-indicator { display: none; color: var(--text-tertiary); font-size: 0.85rem; margin-left: 0.5rem; }
.htmx-request .htmx-indicator, .htmx-request.htmx-indicator { display: inline; }

.footer {
  margin-top: 4rem;
  padding: 1.5rem;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  padding-top: var(--nav-height);
}
.back-link:hover { color: var(--accent); }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-content {
  animation: fadeInUp 0.8s ease forwards;
}

@media (max-width: 900px) {
  .home-layout { grid-template-columns: 1fr; }
  .home-sidebar { order: -1; }
}

@media (max-width: 768px) {
  .container, .container-wide { padding: 1.5rem 1rem; }
  .page-title { font-size: 1.4rem; }
  .article-title { font-size: 1.5rem; }
  .wiki-layout { grid-template-columns: 1fr; padding-top: var(--nav-height); }
  .wiki-sidebar {
    position: static;
    max-height: none;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    padding-right: 0;
  }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .todo-item { flex-wrap: wrap; }
  .todo-meta { margin-left: 1.6rem; width: 100%; }
  .nav-links { gap: 0.75rem; }
  .nav-links a { font-size: 0.8rem; }
  .hero { min-height: 35vh; background-attachment: scroll; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { gap: 0.5rem; }
  .hero { min-height: 30vh; }
}