/* ===== Wang Toolbox - Shared Styles ===== */
:root {
  --bg: #0b1120;
  --bg-card: #1a2332;
  --bg-card-hover: #1e293b;
  --bg-input: #0f172a;
  --border: #2a3a4e;
  --text: #e2e8f0;
  --text-muted: #7e93b0;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #22c55e;
  --error: #ef4444;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.4);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
  font-size: 18px;
  font-weight: 700;
}

.header-logo span { color: var(--primary); }

.header-nav { display: flex; gap: 4px; }

.header-nav a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius);
  font-size: 14px;
  transition: all 0.15s;
}

.header-nav a:hover { color: var(--text); background: var(--bg-input); }

/* Container */
.container { max-width: 1100px; margin: 0 auto; padding: 24px; width: 100%; flex: 1; }

/* Page Header */
.page-header { margin-bottom: 28px; }
.page-header h1 { font-size: 24px; font-weight: 700; margin-bottom: 6px; }
.page-header p { color: var(--text-muted); font-size: 14px; line-height: 1.5; }

/* Breadcrumb */
.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--text-muted); margin-bottom: 16px;
}
.breadcrumb a { color: var(--primary); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* Tool Card */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tool-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59,130,246,0.15);
}

.tool-card-icon { font-size: 28px; line-height: 1; }

.tool-card h3 { font-size: 16px; font-weight: 600; }

.tool-card p { color: var(--text-muted); font-size: 13px; line-height: 1.5; }

/* Tool UI */
.tool-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
}

.tool-box h2 { font-size: 16px; font-weight: 600; margin-bottom: 12px; color: var(--text-muted); }

textarea, input[type="text"], input[type="search"], select {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 10px 12px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.5;
  transition: border-color 0.15s;
  outline: none;
}

textarea:focus, input:focus, select:focus { border-color: var(--primary); }

textarea { resize: vertical; min-height: 140px; }

/* Buttons */
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px; border-radius: var(--radius);
  font-size: 14px; font-weight: 500;
  cursor: pointer; transition: all 0.15s;
  border: none; text-decoration: none;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }

.btn-secondary {
  background: transparent; color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-input); border-color: var(--text-muted); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #16a34a; }

.btn-danger { background: var(--error); color: #fff; }
.btn-danger:hover { background: #dc2626; }

/* Output */
.output-area {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  min-height: 60px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
  overflow-x: auto;
  margin-top: 8px;
}

.output-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 16px; margin-bottom: 4px;
}

.output-header label { font-size: 13px; color: var(--text-muted); font-weight: 500; }

.output-header .copy-btn {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 12px; padding: 2px 8px; border-radius: 4px;
}
.output-header .copy-btn:hover { color: var(--primary); background: var(--bg-input); }

/* Stats bar / Status */
.status-bar {
  display: flex; gap: 16px; font-size: 12px; color: var(--text-muted);
  padding: 8px 0; flex-wrap: wrap;
}

.status-bar span { display: flex; align-items: center; gap: 4px; }

/* Diff styles */
.diff-container { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 640px) { .diff-container { grid-template-columns: 1fr; } }

.diff-output {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 8px;
}
@media (max-width: 640px) { .diff-output { grid-template-columns: 1fr; } }

.diff-panel { background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; }
.diff-panel h4 { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px; }

.diff-added { background: rgba(34,197,94,0.15); }
.diff-removed { background: rgba(239,68,68,0.15); }

/* UUID specific */
.uuid-list { display: flex; flex-direction: column; gap: 6px; }

.uuid-row {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-input); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 8px 12px;
  font-family: 'JetBrains Mono', monospace; font-size: 13px;
}

.uuid-row .copy-mini {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 12px; padding: 2px 6px;
}
.uuid-row .copy-mini:hover { color: var(--primary); }

/* Options row */
.options-row {
  display: flex; gap: 16px; align-items: center;
  flex-wrap: wrap; margin-bottom: 12px;
}

.options-row label { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; cursor: pointer; }

.options-row select, .options-row input[type="number"] {
  width: auto; min-width: 80px; padding: 6px 10px;
}

/* Checkbox styled */
input[type="checkbox"] {
  accent-color: var(--primary); width: 16px; height: 16px;
}

/* Checkbox group */
.checkbox-group { display: flex; gap: 12px; flex-wrap: wrap; }

/* Hash results */
.hash-results { display: flex; flex-direction: column; gap: 4px; }
.hash-row { display: flex; align-items: center; gap: 8px; font-size: 13px; padding: 4px 0; }
.hash-row .algo { color: var(--primary); font-weight: 600; min-width: 40px; font-family: 'JetBrains Mono', monospace; }
.hash-row .hash-val { font-family: 'JetBrains Mono', monospace; color: var(--text-muted); word-break: break-all; }

/* Footer */
.footer {
  text-align: center; padding: 24px; color: var(--text-muted);
  font-size: 13px; border-top: 1px solid var(--border);
  margin-top: 40px;
}

/* Toast */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text); padding: 10px 20px; border-radius: var(--radius);
  font-size: 13px; box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  z-index: 9999; opacity: 0; transition: opacity 0.3s;
  pointer-events: none;
}
.toast.show { opacity: 1; }

/* Responsive */
@media (max-width: 640px) {
  .container { padding: 16px; }
  .tool-grid { grid-template-columns: 1fr; }
  .header { padding: 0 16px; }
  .header-nav a { font-size: 13px; padding: 4px 8px; }
}

/* Ad placeholders - minimal footprint, real AdSense codes later */
.adsense-container {
  margin: 16px 0;
  min-height: 90px;
  overflow: hidden;
}