:root {
  --bg: #f3faf5;
  --surface: #ffffff;
  --text: #102818;
  --text-muted: #4c6b57;
  --border: #dbeee1;
  --accent: #16a34a;
  --accent-text: #ffffff;
  --shadow: 0 2px 10px rgba(16, 40, 24, 0.07);
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1a13;
    --surface: #17251b;
    --text: #eaf6ee;
    --text-muted: #9dbfa9;
    --border: #27392c;
    --accent: #4ade80;
    --accent-text: #0f1a13;
    --shadow: 0 2px 14px rgba(0, 0, 0, 0.4);
  }
}

:root[data-theme="light"] {
  --bg: #f3faf5;
  --surface: #ffffff;
  --text: #102818;
  --text-muted: #4c6b57;
  --border: #dbeee1;
  --accent: #16a34a;
  --accent-text: #ffffff;
  --shadow: 0 2px 10px rgba(16, 40, 24, 0.07);
}

:root[data-theme="dark"] {
  --bg: #0f1a13;
  --surface: #17251b;
  --text: #eaf6ee;
  --text-muted: #9dbfa9;
  --border: #27392c;
  --accent: #4ade80;
  --accent-text: #0f1a13;
  --shadow: 0 2px 14px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.header-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  padding: 16px 20px;
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
  text-decoration: none;
}

.header-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 18px;
  width: 100%;
}

/* Flatten these wrappers so every control (nav links, select, toggle)
   is a direct flex item of .header-controls and wraps individually,
   keeping the row centered no matter where it breaks. */
.site-nav,
.header-actions {
  display: contents;
}

.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.95rem;
}

.site-nav a:hover { color: var(--accent); background: var(--bg); }

.lang-select {
  height: 36px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.85rem;
  cursor: pointer;
}

.lang-select:hover { border-color: var(--accent); color: var(--accent); }

.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }

.theme-toggle .icon-moon { display: none; }

:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* Intro */
.intro {
  text-align: center;
  padding: 40px 0;
}

.intro h1 {
  font-size: 2rem;
  margin-bottom: 8px;
}

.intro p {
  color: var(--text-muted);
  margin: 0;
  text-align: center;
}

/* Tabs */
.tool-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: 24px 0;
}

.tab-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  padding: 10px 18px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: all 0.15s ease;
}

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

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

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

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px 24px;
  text-align: center;
}

.action-btn {
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  padding: 14px 28px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s ease, opacity 0.1s ease;
}

.action-btn:hover { opacity: 0.9; }
.action-btn:active { transform: scale(0.97); }

.result {
  margin-top: 18px;
  font-size: 1.1rem;
  color: var(--text-muted);
  min-height: 1.6em;
}

.result.big {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
}

/* Coin */
.coin {
  width: 120px;
  height: 120px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #86efac);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-text);
  transition: transform 0.5s ease;
}

.coin.flipping { animation: spin 0.6s ease; }

@keyframes spin {
  0% { transform: rotateY(0); }
  100% { transform: rotateY(1080deg); }
}

/* Dice */
.dice-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.die {
  width: 64px;
  height: 64px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 700;
}

.dice-controls {
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.dice-controls select {
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

/* Number inputs */
.number-inputs {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.field label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.field input {
  width: 100px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

/* Password generator */
.pw-output-row {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.pw-output {
  flex: 1;
  min-width: 0;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 1rem;
  word-break: break-all;
  text-align: left;
  overflow-x: auto;
  white-space: nowrap;
}

.copy-btn {
  flex-shrink: 0;
  padding: 0 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
}

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

.pw-options {
  margin-bottom: 20px;
}

.pw-length-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pw-length-row input[type="range"] {
  width: 160px;
  accent-color: var(--accent);
}

.pw-checkboxes {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pw-checkboxes label {
  display: flex;
  align-items: center;
  gap: 6px;
}

.pw-checkboxes input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
}

/* Random picker */
.picker-input {
  display: block;
  width: 100%;
  max-width: 420px;
  margin: 0 auto 18px;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
}

/* Rock paper scissors */
.rps-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 18px;
}

.rps-btn {
  padding: 12px 22px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

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

/* Tool copy */
.tool-copy {
  max-width: 620px;
  margin: 28px auto;
  padding: 0 8px;
  text-align: center;
}

.tool-copy h2 {
  font-size: 1.2rem;
  margin: 0 0 6px;
}

.tool-copy p {
  color: var(--text-muted);
  margin: 0;
  text-align: justify;
}

/* Disclaimer */
.disclaimer {
  margin: 0 0 40px;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}

.disclaimer p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: justify;
}

.disclaimer strong {
  color: var(--text);
}

/* FAQ */
.faq {
  margin: 56px 0;
}

.faq h2 {
  font-size: 1.4rem;
  margin-bottom: 16px;
  text-align: center;
}

.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
}

.faq p {
  color: var(--text-muted);
  margin: 10px 0 0;
  text-align: justify;
}

/* Static pages */
.page {
  padding: 40px 0;
}

.page h1 {
  font-size: 1.8rem;
  text-align: center;
}

.page h2 {
  font-size: 1.2rem;
  margin-top: 28px;
}

.page p {
  color: var(--text-muted);
  text-align: justify;
}

.page a,
.faq a {
  color: var(--accent);
}

.page a:visited,
.faq a:visited {
  color: var(--accent);
}

.page a:hover,
.faq a:hover {
  text-decoration: none;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 60px;
  padding: 24px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
}

.site-footer a {
  color: var(--text-muted);
  text-decoration: none;
  margin: 0 7px;
}

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

@media (max-width: 480px) {
  .intro h1 { font-size: 1.6rem; }
  .tool-card { padding: 28px 16px; }
}