/* ---------------------------------------------------------------------------
   MultiTools - dark theme
--------------------------------------------------------------------------- */

:root {
  --bg: #0b0f1a;
  --bg-soft: #111827;
  --panel: #151d2e;
  --panel-hover: #1a2438;
  --border: #263349;
  --text: #e7ecf3;
  --muted: #94a3b8;
  --accent: #4f8cff;
  --accent-hover: #6ba3ff;
  --accent-strong: #3b6fd9;
  --success: #34d399;
  --error: #f87171;
  --warning: #fbbf24;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(1200px 600px at 50% -200px, #1c2a4e 0%, var(--bg) 60%);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

.main {
  flex: 1;
  padding-top: 24px;
  padding-bottom: 56px;
}

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

a:hover {
  color: var(--accent-hover);
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(11, 15, 26, 0.75);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.3px;
}

.brand:hover {
  color: var(--text);
}

.nav-link {
  color: var(--muted);
  font-size: 0.95rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
}

.nav-link:hover {
  color: var(--text);
  background: var(--panel-hover);
}

/* Hero */
.hero {
  text-align: center;
  padding: 56px 0 36px;
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, #fff, var(--accent-hover));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-sub {
  color: var(--muted);
  max-width: 640px;
  margin: 12px auto 0;
  font-size: 1.05rem;
}

/* Tool cards */
.tools-section {
  padding-top: 12px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  color: var(--text);
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.tool-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
  color: var(--text);
}

.tool-icon {
  font-size: 1.7rem;
  line-height: 1;
  height: 44px;
  display: flex;
  align-items: center;
}

.tool-card h2 {
  font-size: 1.05rem;
  font-weight: 600;
}

.tool-card p {
  color: var(--muted);
  font-size: 0.9rem;
}

/* Tool pages */
.breadcrumb {
  margin-bottom: 18px;
  font-size: 0.9rem;
}

.tool-head {
  margin-bottom: 24px;
}

.tool-head h1 {
  font-size: 1.8rem;
  font-weight: 700;
}

.tool-head .hero-sub {
  margin: 6px 0 0;
  text-align: left;
}

.layout-two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 820px) {
  .layout-two {
    grid-template-columns: 1fr;
  }
  .hero h1 {
    font-size: 1.9rem;
  }
}

/* Panels & forms */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.result-panel {
  position: sticky;
  top: 80px;
}

.panel h2 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 12px;
}

label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
  margin: 14px 0 6px;
}

input[type="text"],
input[type="number"],
input[type="password"],
select,
textarea {
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 10px 12px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.15s;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
}

textarea {
  resize: vertical;
}

.mono {
  font-family: "Cascadia Code", "Consolas", "SF Mono", monospace;
  font-size: 0.88rem;
}

input[type="color"] {
  width: 100%;
  height: 40px;
  padding: 4px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

input[type="file"] {
  width: 100%;
  padding: 10px;
  background: var(--bg-soft);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 0.9rem;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  color: var(--text);
  margin: 10px 0;
  cursor: pointer;
}

.checkbox input {
  width: 17px;
  height: 17px;
  accent-color: var(--accent);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 14px;
}

.form-group label {
  margin-top: 0;
}

.divider {
  text-align: center;
  color: var(--muted);
  margin: 16px 0 4px;
  font-size: 0.85rem;
  letter-spacing: 1px;
}

.hint {
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 12px;
}

/* Buttons */
.btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.btn-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
  margin-top: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  user-select: none;
}

.btn:hover {
  background: var(--panel-hover);
  border-color: var(--accent);
  color: var(--text);
}

.btn.primary {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: #fff;
}

.btn.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-small {
  padding: 4px 10px;
  font-size: 0.8rem;
}

/* Flashes */
.flash-stack {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.flash {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid;
  font-size: 0.92rem;
}

.flash-error {
  background: rgba(248, 113, 113, 0.12);
  border-color: var(--error);
  color: var(--error);
}

.flash-success {
  background: rgba(52, 211, 153, 0.12);
  border-color: var(--success);
  color: var(--success);
}

/* QR result */
.qr-output {
  display: flex;
  justify-content: center;
  padding: 16px;
  background: #fff;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

.qr-image {
  width: 220px;
  height: 220px;
  image-rendering: pixelated;
}

.placeholder {
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 42px 20px;
  text-align: center;
  font-size: 0.92rem;
}

/* Tabs (converter) */
.tabs {
  display: flex;
  gap: 6px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.tab-btn {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  padding: 10px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

/* Hash list */
.hash-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hash-item {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  align-items: center;
  gap: 10px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
}

.hash-name {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.4px;
}

.hash-value {
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 0.82rem;
  word-break: break-all;
  color: var(--text);
}

/* Markdown preview */
.markdown-preview {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  margin-bottom: 20px;
  overflow-wrap: break-word;
}

.markdown-preview h1, .markdown-preview h2, .markdown-preview h3 {
  margin: 0.8em 0 0.4em;
  line-height: 1.3;
}

.markdown-preview p {
  margin: 0.6em 0;
}

.markdown-preview pre {
  background: #0d1420;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  overflow-x: auto;
  font-size: 0.88rem;
}

.markdown-preview code {
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 0.88rem;
}

.markdown-preview pre code {
  background: none;
  padding: 0;
}

.markdown-preview ul, .markdown-preview ol {
  padding-left: 26px;
  margin: 0.6em 0;
}

.markdown-preview blockquote {
  border-left: 3px solid var(--accent);
  margin: 0.8em 0;
  padding: 4px 14px;
  color: var(--muted);
  background: rgba(79, 140, 255, 0.06);
}

.markdown-preview table {
  border-collapse: collapse;
  margin: 0.8em 0;
  width: 100%;
}

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

.markdown-preview img {
  max-width: 100%;
}

/* Strength bar (password) */
.strength-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--muted);
}

.strength-bar {
  flex: 1;
  height: 8px;
  background: var(--bg-soft);
  border-radius: 99px;
  overflow: hidden;
}

.strength-fill {
  height: 100%;
  width: 0%;
  background: var(--error);
  border-radius: 99px;
  transition: width 0.3s ease, background 0.3s ease;
}

/* Status message (JSON) */
.status {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  border: 1px solid var(--border);
}

.status.success {
  color: var(--success);
  border-color: var(--success);
  background: rgba(52, 211, 153, 0.08);
}

.status.error {
  color: var(--error);
  border-color: var(--error);
  background: rgba(248, 113, 113, 0.08);
}

/* Error page */
.error-box {
  text-align: center;
  padding: 80px 20px;
}

.error-code {
  font-size: 5rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.error-box h1 {
  font-size: 1.6rem;
  margin: 10px 0;
}

.error-box p {
  color: var(--muted);
  margin-bottom: 24px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 18px 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}