/* ── CSS Variables ─────────────────────────────────────────────────────────── */
:root {
  --bg: #0a0a0f;
  --bg-card: #111120;
  --bg-card2: #0d0d1a;
  --border: #1e1e3a;
  --text: #e0e0e0;
  --text-dim: #888;
  --neon-cyan: #00ffff;
  --neon-purple: #bf5fff;
  --neon-green: #39ff14;
  --neon-yellow: #ffff00;
  --neon-pink: #ff00ff;
  --neon-orange: #ff6600;
  --sidebar-width: 250px;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
}

a { color: var(--neon-cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ────────────────────────────────────────────────────────────────── */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ───────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background: var(--bg-card2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-logo {
  padding: 20px 16px 16px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--neon-cyan);
  text-shadow: 0 0 12px var(--neon-cyan);
  text-decoration: none;
}

.sidebar-logo .logo-icon {
  font-size: 1.5rem;
}

.sidebar-nav {
  flex: 1;
  padding: 8px 0 20px;
  overflow-y: auto;
}

.nav-category {
  padding: 14px 16px 4px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  color: var(--text);
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: all 0.2s;
  font-size: 0.9rem;
  user-select: none;
}

.nav-link:hover {
  background: rgba(255,255,255,0.04);
  color: var(--neon-cyan);
  border-left-color: var(--neon-cyan);
}

.nav-link.active {
  background: rgba(0,255,255,0.06);
  color: var(--neon-cyan);
  border-left-color: var(--neon-cyan);
  text-shadow: 0 0 8px rgba(0,255,255,0.5);
}

.nav-link.active.purple {
  background: rgba(191,95,255,0.06);
  color: var(--neon-purple);
  border-left-color: var(--neon-purple);
  text-shadow: 0 0 8px rgba(191,95,255,0.5);
}

.nav-link.active.green {
  background: rgba(57,255,20,0.06);
  color: var(--neon-green);
  border-left-color: var(--neon-green);
  text-shadow: 0 0 8px rgba(57,255,20,0.5);
}

.nav-link.active.yellow {
  background: rgba(255,255,0,0.06);
  color: var(--neon-yellow);
  border-left-color: var(--neon-yellow);
  text-shadow: 0 0 8px rgba(255,255,0,0.5);
}

.nav-icon { font-size: 1.1rem; width: 20px; text-align: center; }

/* ── Main Content ──────────────────────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 28px 32px;
  min-width: 0;
}

/* ── Topbar (mobile) ───────────────────────────────────────────────────────── */
.topbar {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-card2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.hamburger {
  background: none;
  border: none;
  color: var(--neon-cyan);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 4px;
}

/* ── Tool Panels ───────────────────────────────────────────────────────────── */
.tool-panel { display: none; }
.tool-panel.active { display: block; }

.tool-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
  margin-bottom: 18px;
  transition: border-color 0.2s;
}

.card:hover {
  border-color: rgba(0,255,255,0.2);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 8px;
}

/* ── Neon text helpers ─────────────────────────────────────────────────────── */
.neon-cyan   { color: var(--neon-cyan);   text-shadow: 0 0 10px rgba(0,255,255,0.6); }
.neon-purple { color: var(--neon-purple); text-shadow: 0 0 10px rgba(191,95,255,0.6); }
.neon-green  { color: var(--neon-green);  text-shadow: 0 0 10px rgba(57,255,20,0.6); }
.neon-yellow { color: var(--neon-yellow); text-shadow: 0 0 10px rgba(255,255,0,0.6); }
.neon-pink   { color: var(--neon-pink);   text-shadow: 0 0 10px rgba(255,0,255,0.6); }

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn-primary, .btn-purple, .btn-green, .btn-yellow, .btn-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  border: 1px solid;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.5px;
  transition: all 0.2s;
  background: transparent;
}

.btn-primary {
  color: var(--neon-cyan);
  border-color: var(--neon-cyan);
  box-shadow: 0 0 8px rgba(0,255,255,0.2);
}
.btn-primary:hover {
  background: rgba(0,255,255,0.1);
  box-shadow: 0 0 16px rgba(0,255,255,0.4);
}

.btn-purple {
  color: var(--neon-purple);
  border-color: var(--neon-purple);
  box-shadow: 0 0 8px rgba(191,95,255,0.2);
}
.btn-purple:hover {
  background: rgba(191,95,255,0.1);
  box-shadow: 0 0 16px rgba(191,95,255,0.4);
}

.btn-green {
  color: var(--neon-green);
  border-color: var(--neon-green);
  box-shadow: 0 0 8px rgba(57,255,20,0.2);
}
.btn-green:hover {
  background: rgba(57,255,20,0.1);
  box-shadow: 0 0 16px rgba(57,255,20,0.4);
}

.btn-yellow {
  color: var(--neon-yellow);
  border-color: var(--neon-yellow);
  box-shadow: 0 0 8px rgba(255,255,0,0.2);
}
.btn-yellow:hover {
  background: rgba(255,255,0,0.1);
  box-shadow: 0 0 16px rgba(255,255,0,0.4);
}

.btn-sm {
  padding: 5px 12px;
  font-size: 0.78rem;
  color: var(--text-dim);
  border-color: var(--border);
}
.btn-sm:hover {
  color: var(--text);
  border-color: #444;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
}

/* ── Form elements ─────────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 14px;
}

label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 5px;
  font-weight: 500;
  letter-spacing: 0.3px;
}

input[type="text"],
input[type="number"],
input[type="password"],
input[type="url"],
select,
textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 12px;
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="password"]:focus,
input[type="url"]:focus,
select:focus,
textarea:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 6px rgba(0,255,255,0.2);
}

textarea {
  resize: vertical;
  min-height: 100px;
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 0.85rem;
}

select {
  cursor: pointer;
}

select option {
  background: var(--bg-card);
}

.checkbox-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 10px 0;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--text);
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--neon-cyan);
  cursor: pointer;
}

.input-row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.input-row > .form-group {
  flex: 1;
  margin-bottom: 0;
}

/* ── Result Box ────────────────────────────────────────────────────────────── */
.result-box {
  margin-top: 16px;
  background: #07071a;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 0.83rem;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--neon-green);
  position: relative;
  max-height: 500px;
  overflow-y: auto;
  line-height: 1.7;
}

.result-box.hidden { display: none; }

.result-box.error-box {
  color: #ff4444;
  border-color: rgba(255,68,68,0.3);
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.result-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.copy-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
}

.copy-btn:hover {
  color: var(--neon-cyan);
  border-color: var(--neon-cyan);
}

/* ── KV table for structured results ──────────────────────────────────────── */
.kv-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 0.83rem;
}

.kv-table tr:not(:last-child) {
  border-bottom: 1px solid rgba(30,30,58,0.8);
}

.kv-table td {
  padding: 7px 10px;
  vertical-align: top;
}

.kv-table td:first-child {
  color: var(--neon-cyan);
  width: 160px;
  white-space: nowrap;
  opacity: 0.85;
}

.kv-table td:last-child {
  color: var(--text);
  word-break: break-all;
}

/* ── Loading Spinner ───────────────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(0,255,255,0.2);
  border-top-color: var(--neon-cyan);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-row {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-dim);
  font-size: 0.88rem;
  margin-top: 14px;
}

/* ── Status badges ─────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.badge-up   { background: rgba(57,255,20,0.15);  color: var(--neon-green);  border: 1px solid rgba(57,255,20,0.4); }
.badge-down { background: rgba(255,68,68,0.15);  color: #ff4444;            border: 1px solid rgba(255,68,68,0.4); }
.badge-ok   { background: rgba(0,255,255,0.1);   color: var(--neon-cyan);   border: 1px solid rgba(0,255,255,0.3); }
.badge-warn { background: rgba(255,255,0,0.1);   color: var(--neon-yellow); border: 1px solid rgba(255,255,0,0.3); }

/* ── Home Dashboard ────────────────────────────────────────────────────────── */
.dashboard-header {
  margin-bottom: 32px;
}

.dashboard-header h1 {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.dashboard-header p {
  color: var(--text-dim);
  font-size: 1rem;
}

.category-section {
  margin-bottom: 32px;
}

.category-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.tool-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
  gap: 12px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--card-color, var(--neon-cyan));
  box-shadow: 0 4px 20px rgba(0,255,255,0.1);
  background: var(--bg-card2);
}

.tool-card .card-icon {
  font-size: 2rem;
  margin-bottom: 8px;
  display: block;
}

.tool-card .card-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--card-color, var(--neon-cyan));
}

.tool-card .card-desc {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 4px;
  line-height: 1.4;
}

/* ── Diff viewer ───────────────────────────────────────────────────────────── */
.diff-add { background: rgba(57,255,20,0.12); color: var(--neon-green); }
.diff-del { background: rgba(255,68,68,0.12);  color: #ff4444; text-decoration: line-through; }
.diff-same { color: var(--text-dim); }

.diff-container {
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 0.82rem;
  background: #07071a;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  line-height: 1.9;
  max-height: 480px;
  overflow-y: auto;
  margin-top: 14px;
}

/* ── Markdown preview ──────────────────────────────────────────────────────── */
.md-preview {
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text);
  padding: 16px;
  background: #07071a;
  border: 1px solid var(--border);
  border-radius: 8px;
  min-height: 200px;
  max-height: 500px;
  overflow-y: auto;
  margin-top: 14px;
}

.md-preview h1, .md-preview h2, .md-preview h3 {
  color: var(--neon-cyan);
  margin: 16px 0 8px;
}

.md-preview code {
  background: rgba(0,255,255,0.06);
  color: var(--neon-green);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.85em;
}

.md-preview pre {
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  overflow-x: auto;
}

.md-preview blockquote {
  border-left: 3px solid var(--neon-purple);
  padding-left: 12px;
  color: var(--text-dim);
  margin: 10px 0;
}

.md-preview a { color: var(--neon-cyan); }

.md-preview table {
  border-collapse: collapse;
  width: 100%;
  margin: 10px 0;
}

.md-preview th, .md-preview td {
  border: 1px solid var(--border);
  padding: 6px 12px;
  text-align: left;
}

.md-preview th { background: rgba(0,255,255,0.06); color: var(--neon-cyan); }

.split-view {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ── Word count stats ──────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.stat-box {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--neon-cyan);
  display: block;
}

.stat-label {
  font-size: 0.73rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 3px;
}

/* ── Scrollbar ─────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #2a2a4a; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #3a3a6a; }

/* ── Utilities ─────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }
.mt-8  { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.text-dim { color: var(--text-dim); font-size: 0.85rem; }
.monospace { font-family: 'Fira Code', 'Courier New', monospace; }

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 30px rgba(0,0,0,0.7);
  }
  .main-content {
    margin-left: 0;
    padding: 0;
    overflow-x: hidden;
  }
  .topbar {
    display: flex;
  }
  .split-view {
    grid-template-columns: 1fr;
  }
  .tool-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .sidebar-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 99;
  }

  /* Reduce card padding for more content space */
  .card {
    padding: 16px;
  }

  /* Stack input rows vertically so buttons are easier to tap */
  .input-row {
    flex-wrap: wrap;
  }
  .input-row > button {
    flex: 1;
  }

  /* Stretch action buttons to fill available width */
  .btn-row > button {
    flex: 1;
    justify-content: center;
  }

  /* Smaller headings on narrow screens */
  .dashboard-header {
    padding: 16px 16px 0;
  }
  .dashboard-header h1 {
    font-size: 1.6rem;
  }
  .category-section {
    padding: 0 16px;
  }
  .tool-title {
    font-size: 1.3rem;
    padding: 16px 16px 0;
  }

  /* Ensure result boxes don't overflow */
  .result-box {
    max-height: 360px;
    font-size: 0.78rem;
  }

  /* KV table: allow horizontal scroll if needed */
  .kv-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .kv-table td:first-child {
    width: 120px;
  }
}

.sidebar-overlay { display: none; }

/* ── Very small screens (single-column tool cards) ─────────────────────────── */
@media (max-width: 420px) {
  .tool-cards {
    grid-template-columns: 1fr;
  }
}

.site-footer {
  text-align: center;
  padding: 1rem;
  color: var(--text-dim);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}