/* css/style.css - Ant Design 5 Style */

/* ===== Design Tokens ===== */
:root {
  --color-primary: #1677ff;
  --color-primary-hover: #4096ff;
  --color-primary-active: #0958d9;
  --color-success: #52c41a;
  --color-warning: #faad14;
  --color-error: #ff4d4f;
  --color-text: rgba(0, 0, 0, 0.88);
  --color-text-secondary: rgba(0, 0, 0, 0.65);
  --color-text-tertiary: rgba(0, 0, 0, 0.45);
  --color-border: #d9d9d9;
  --color-border-hover: #4096ff;
  --color-bg-container: #ffffff;
  --color-bg-layout: #f5f5f5;
  --color-bg-elevated: #ffffff;
  --color-fill-secondary: rgba(0, 0, 0, 0.06);
  --color-fill-tertiary: rgba(0, 0, 0, 0.04);
  --border-radius: 6px;
  --border-radius-lg: 8px;
  --border-radius-sm: 4px;
  --box-shadow: 0 6px 16px 0 rgba(0, 0, 0, 0.08), 0 3px 6px -4px rgba(0, 0, 0, 0.12), 0 9px 28px 8px rgba(0, 0, 0, 0.05);
  --box-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03), 0 1px 6px -1px rgba(0, 0, 0, 0.02), 0 2px 4px 0 rgba(0, 0, 0, 0.02);
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
}

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

body {
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.5714;
  color: var(--color-text);
  background: var(--color-bg-layout);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Header ===== */
header {
  background: var(--color-bg-container);
  padding: 16px 24px;
  box-shadow: var(--box-shadow-sm);
  border-bottom: 1px solid var(--color-border);
}

header h1 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

/* ===== Tabs ===== */
.tabs {
  display: flex;
  gap: 0;
  background: var(--color-bg-container);
  padding: 0 24px;
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
}

.tab {
  padding: 12px 20px;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 14px;
  cursor: pointer;
  position: relative;
  transition: all 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
  white-space: nowrap;
  font-family: var(--font-family);
}

.tab::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: transparent;
  transition: background 0.2s;
}

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

.tab.active {
  color: var(--color-primary);
  font-weight: 500;
}

.tab.active::after {
  background: var(--color-primary);
}

/* ===== Main ===== */
main {
  max-width: 880px;
  margin: 24px auto;
  padding: 0 24px;
}

.tool-panel {
  display: none;
}

.tool-panel.active {
  display: block;
}

/* ===== Card ===== */
.card {
  background: var(--color-bg-container);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  box-shadow: var(--box-shadow);
  border: 1px solid var(--color-border);
}

/* ===== Labels ===== */
label {
  display: block;
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 8px;
}

/* ===== Textarea ===== */
textarea {
  width: 100%;
  min-height: 150px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5714;
  color: var(--color-text);
  background: var(--color-bg-container);
  resize: vertical;
  transition: all 0.2s;
}

textarea:hover {
  border-color: var(--color-border-hover);
}

textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(22, 119, 255, 0.1);
}

textarea::placeholder {
  color: var(--color-text-tertiary);
}

/* ===== Output Area ===== */
.output-area {
  width: 100%;
  min-height: 150px;
  padding: 12px;
  background: var(--color-fill-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5714;
  color: var(--color-text);
  white-space: pre-wrap;
  word-break: break-all;
  overflow-y: auto;
}

/* ===== Buttons ===== */
.btn {
  height: 32px;
  padding: 4px 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: 14px;
  line-height: 1.5714;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
  font-family: var(--font-family);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: nowrap;
  user-select: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 0 rgba(5, 145, 255, 0.1);
}

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

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

.btn-primary:disabled {
  background: var(--color-fill-tertiary);
  border-color: var(--color-border);
  color: var(--color-text-tertiary);
  cursor: not-allowed;
  box-shadow: none;
}

.btn-secondary {
  background: var(--color-bg-container);
  border-color: var(--color-border);
  color: var(--color-text);
}

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

/* ===== Button Row ===== */
.btn-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  margin-top: 16px;
}

/* ===== Options Row ===== */
.options-row {
  display: flex;
  gap: 20px;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.options-row label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 14px;
  color: var(--color-text);
}

/* ===== Select ===== */
select {
  height: 32px;
  padding: 4px 11px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-bg-container);
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-family);
}

select:hover {
  border-color: var(--color-primary);
}

select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(22, 119, 255, 0.1);
}

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

/* ===== Range Slider ===== */
input[type="range"] {
  -webkit-appearance: none;
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  transition: all 0.2s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.1);
  box-shadow: 0 0 0 4px rgba(22, 119, 255, 0.1);
}

/* ===== Info / Status ===== */
.info {
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin-top: 12px;
}

.error {
  color: var(--color-error);
  background: rgba(255, 77, 79, 0.06);
  border: 1px solid rgba(255, 77, 79, 0.2);
  padding: 8px 12px;
  border-radius: var(--border-radius);
  font-size: 14px;
  margin-top: 12px;
}

.success {
  color: var(--color-success);
  font-size: 13px;
  margin-left: 8px;
}

/* ===== Strength Bar ===== */
.strength-bar {
  height: 4px;
  border-radius: 2px;
  background: var(--color-border);
  margin-top: 12px;
  overflow: hidden;
  transition: all 0.3s;
}

.strength-bar.weak {
  width: 33%;
  background: var(--color-error);
}

.strength-bar.medium {
  width: 66%;
  background: var(--color-warning);
}

.strength-bar.strong {
  width: 100%;
  background: var(--color-success);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  header {
    padding: 12px 16px;
  }

  header h1 {
    font-size: 18px;
  }

  .tabs {
    padding: 0 16px;
  }

  .tab {
    padding: 10px 14px;
    font-size: 13px;
  }

  main {
    margin: 16px auto;
    padding: 0 12px;
  }

  .card {
    padding: 16px;
  }

  .options-row {
    gap: 12px;
  }
}