/* Star-Scar Base Styles — Bear Blue Deep Theme */
:root {
  --primary: #4A6FA5;
  --primary-hover: #3D5E8F;
  --primary-light: #7BA3D6;
  --primary-gradient: linear-gradient(135deg, #4A6FA5, #6B9FD6);
  --accent: #6B9FD6;
  --accent-glow: rgba(74,111,165,0.35);
  --bg: #1B2B45;
  --bg-pattern: radial-gradient(ellipse at 20% 80%, rgba(74,111,165,0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 15%, rgba(107,159,214,0.08) 0%, transparent 50%);
  --surface: #243656;
  --surface-hover: #2C4068;
  --text: #E8EDF5;
  --text-muted: #8DA0BE;
  --border: #354D72;
  --safe: #4ADE80;
  --warning: #F87171;
  --caution: #FBBF24;
  --radius: 24px;
  --radius-btn: 50px;
  --radius-input: 16px;
  --shadow: 0 4px 16px rgba(0,0,0,0.25), 0 0 1px rgba(74,111,165,0.2);
  --shadow-hover: 0 8px 28px rgba(0,0,0,0.3), 0 0 16px rgba(74,111,165,0.15);
  --max-w: 820px;
}

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

body {
  font-family: 'Nunito', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', 'Noto Sans SC', sans-serif;
  background: var(--bg);
  background-image: var(--bg-pattern);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.site-header h1 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--primary-light);
  font-size: 1.6rem;
  font-weight: 800;
}

.site-logo {
  width: 88px;
  height: 88px;
  flex-shrink: 0;
  animation: bear-wiggle 3s ease-in-out infinite;
}

@keyframes bear-wiggle {
  0%, 100% { transform: rotate(0deg); }
  15% { transform: rotate(-8deg) scale(1.05); }
  30% { transform: rotate(6deg); }
  45% { transform: rotate(-4deg); }
  60% { transform: rotate(3deg); }
  75% { transform: rotate(-2deg); }
}

.site-logo:hover {
  animation: bear-spin 0.6s ease;
}

@keyframes bear-spin {
  0% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(1.2); }
  100% { transform: rotate(360deg) scale(1); }
}

.lang-switcher {
  display: flex;
  gap: 4px;
}

.lang-switcher button {
  padding: 6px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius-btn);
  background: var(--surface);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: all 0.25s;
}

.lang-switcher button:hover {
  transform: scale(1.06);
  border-color: var(--primary-light);
}

.lang-switcher button:active {
  transform: scale(0.95);
}

.lang-switcher button.active,
.lang-switcher button:hover {
  background: var(--primary-gradient);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 0 16px var(--accent-glow);
}

/* Main content */
.main {
  flex: 1;
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: 24px 20px;
}

/* Tool area */
.tool-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

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

.tool-card h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}

textarea, input[type="text"], input[type="number"] {
  width: 100%;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.9rem;
  resize: vertical;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

textarea:focus, input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 12px rgba(74,111,165,0.2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 52px;
  padding: 14px 32px;
  background: var(--primary-gradient);
  color: white;
  border: none;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(74,111,165,0.3);
  letter-spacing: 0.02em;
}

.btn:hover {
  transform: scale(1.05) translateY(-1px);
  box-shadow: 0 6px 28px rgba(74,111,165,0.4), 0 0 20px var(--accent-glow);
}

.btn:active {
  transform: scale(0.96);
}

.btn-secondary {
  background: var(--surface-hover);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.btn-secondary:hover {
  background: var(--surface);
  border-color: var(--primary);
  box-shadow: 0 0 16px rgba(74,111,165,0.2);
}

/* Progress bar */
.progress-bar-wrap {
  display: none;
  position: relative;
  height: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  overflow: hidden;
  margin: 12px 0;
}

.progress-bar-fill {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: var(--radius-btn);
  transition: width 0.3s ease;
  position: relative;
  box-shadow: 0 0 12px var(--accent-glow);
}

.progress-bear {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  animation: bear-bounce 0.6s ease infinite alternate;
}

@keyframes bear-bounce {
  from { transform: translateY(-50%) rotate(-5deg); }
  to { transform: translateY(-60%) rotate(5deg); }
}

.btn-row {
  display: flex;
  gap: 8px;
  margin: 12px 0;
  flex-wrap: wrap;
}

/* Output area */
.output {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  padding: 16px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.85rem;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 60px;
  overflow-x: auto;
}

/* Ad placeholders */
.ad-slot {
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-input);
  padding: 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin: 20px 0;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.5;
}

/* Footer */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 20px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-radius: var(--radius) var(--radius) 0 0;
}

.site-footer::before {
  content: '🐻';
  display: block;
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

/* SEO content block */
.seo-content {
  margin-top: 32px;
  padding: 28px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.seo-content h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.seo-content p, .seo-content li {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

/* Responsive */
@media (max-width: 600px) {
  .main { padding: 16px 12px; }
  .tool-card { padding: 16px; }
  .btn-row { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .site-header { padding: 12px 16px; }
  .site-logo { width: 48px; height: 48px; }
  .logo-link { font-size: 1.1rem; gap: 8px; }
  .lang-switcher button { padding: 4px 10px; font-size: 0.7rem; }
}