/* common.css - 虾哥工具箱公共样式 🦞 */

:root {
  --bg: #f5f7fa;
  --card-bg: #ffffff;
  --text: #1a1a2e;
  --text-secondary: #555;
  --border: #e0e0e0;
  --primary: #4361ee;
  --primary-hover: #3a56d4;
  --primary-light: #eef0ff;
  --success: #2ec4b6;
  --warning: #ff9f1c;
  --danger: #e63946;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px;
}

/* Header */
.header {
  text-align: center;
  padding: 30px 0 10px;
}
.header h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
}
.header p {
  color: var(--text-secondary);
  margin-top: 4px;
  font-size: 14px;
}

/* Back link */
.back-link {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
.back-link:hover {
  text-decoration: underline;
}

/* Card */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
}
.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover {
  background: #25a89b;
}
.btn-warning {
  background: var(--warning);
  color: #fff;
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}
.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-sm {
  padding: 4px 12px;
  font-size: 13px;
}

/* Input & Textarea */
input[type="text"],
input[type="number"],
textarea,
select {
  font-family: var(--font);
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}
input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(67,97,238,0.1);
}
textarea {
  resize: vertical;
  min-height: 120px;
}

/* Flex utils */
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.flex-center { align-items: center; justify-content: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }

/* Footer */
.footer {
  text-align: center;
  padding: 20px;
  color: var(--text-secondary);
  font-size: 13px;
}

/* Result box */
.result-box {
  background: #f8f9ff;
  border: 1px solid var(--primary-light);
  border-radius: 8px;
  padding: 16px;
  margin-top: 12px;
  min-height: 40px;
  word-break: break-all;
  white-space: pre-wrap;
}

/* Badge */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}
.badge-blue { background: #eef0ff; color: var(--primary); }
.badge-green { background: #e0f7f4; color: #1a8a7d; }
.badge-orange { background: #fff3e0; color: #e67e22; }
.badge-red { background: #ffe0e0; color: var(--danger); }

/* Tabs / toggle group */
.toggle-group {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.toggle-group .toggle-btn {
  padding: 8px 18px;
  border: none;
  background: var(--card-bg);
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s;
}
.toggle-group .toggle-btn.active {
  background: var(--primary);
  color: #fff;
}
.toggle-group .toggle-btn:not(:last-child) {
  border-right: 1px solid var(--border);
}
.toggle-group .toggle-btn:hover:not(.active) {
  background: var(--primary-light);
}