/* Theme and layout tokens */
/* 共通部品と値が異なるため、現在の見た目を保つ固有トークンとして管理する。 */
:root {
  color-scheme: light;
  --gitignore-bg: #f3f6f9;
  --gitignore-panel: #ffffff;
  --gitignore-surface: #f7f9fb;
  --gitignore-text: #172033;
  --gitignore-muted: #5d6878;
  --gitignore-border: #cbd5e1;
  --gitignore-border-strong: #94a3b8;
  --gitignore-primary: #086bd8;
  --gitignore-primary-hover: #0759b3;
  --gitignore-focus: #2563eb;
  --gitignore-success: #087443;
  --gitignore-warning: #8a5100;
  --gitignore-error: #b42318;
  --gitignore-radius-panel: 9px;
  --gitignore-radius-group: 8px;
  --gitignore-radius-control: 7px;
  --gitignore-shadow: 0 1px 2px rgb(15 23 42 / 8%);
  --gitignore-panel-padding: 18px;
  --gitignore-panel-padding-mobile: 14px;
  --gitignore-control-min-height: 42px;
  --gitignore-button-min-height: 40px;
  --gitignore-gap-compact: 9px;
  --gitignore-gap-standard: 12px;
  --gitignore-gap-wide: 16px;
  --gitignore-gap-section: 24px;
  font-family: "Segoe UI", "Noto Sans JP", sans-serif;
}

body[data-theme="dark"] {
  color-scheme: dark;
  --gitignore-bg: #10151d;
  --gitignore-panel: #161d27;
  --gitignore-surface: #202936;
  --gitignore-text: #f2f6fb;
  --gitignore-muted: #aeb9c8;
  --gitignore-border: #3e4a5a;
  --gitignore-border-strong: #64748b;
  --gitignore-primary: #2f8df4;
  --gitignore-primary-hover: #5aa8ff;
  --gitignore-focus: #7db7ff;
  --gitignore-success: #72d7a7;
  --gitignore-warning: #f2bd65;
  --gitignore-error: #ff9088;
}

/* Document and page frame */
* {
  box-sizing: border-box;
}

body.gitignore-page {
  margin: 0;
  min-inline-size: 320px;
  background: var(--gitignore-bg);
  color: var(--gitignore-text);
}

.gitignore-main {
  inline-size: min(1280px, calc(100% - 28px));
  margin: 0 auto;
  padding: 24px 0 40px;
}

.gitignore-page-header h1,
.gitignore-panel h2,
.gitignore-panel h3,
.gitignore-page-header p,
.gitignore-panel p {
  margin-block-start: 0;
}

.gitignore-page-header h1 {
  margin-block-end: 8px;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
}

.gitignore-page-header p {
  color: var(--gitignore-muted);
}

.breadcrumb {
  display: flex;
  gap: 8px;
  margin-block-end: 12px;
  font-size: 0.9rem;
}

.breadcrumb a {
  color: var(--gitignore-primary);
}

/* Panels and headings */
.gitignore-notice,
.gitignore-panel {
  border: 1px solid var(--gitignore-border);
  border-radius: var(--gitignore-radius-panel);
  background: var(--gitignore-panel);
  box-shadow: var(--gitignore-shadow);
}

.gitignore-notice {
  margin-block: 18px;
  padding: 12px 14px;
  border-color: color-mix(in srgb, var(--gitignore-primary) 35%, var(--gitignore-border));
  background: color-mix(in srgb, var(--gitignore-primary) 8%, var(--gitignore-panel));
  color: var(--gitignore-primary);
}

.gitignore-panel {
  margin-block-end: 16px;
  padding: var(--gitignore-panel-padding);
}

.gitignore-panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--gitignore-gap-wide);
  margin-block-end: var(--gitignore-gap-wide);
}

.gitignore-panel-title {
  margin-block-end: 5px;
  font-size: 1.15rem;
}

.gitignore-panel-description,
.gitignore-field-help {
  color: var(--gitignore-muted);
}

/* Form controls */
.gitignore-settings-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(170px, 1fr));
  gap: var(--gitignore-gap-standard);
}

.gitignore-field {
  display: grid;
  gap: 6px;
  font-weight: 600;
}

.gitignore-field-help {
  font-weight: 400;
  line-height: 1.5;
}

.gitignore-control,
.gitignore-textarea,
.gitignore-button {
  border: 1px solid var(--gitignore-border);
  border-radius: var(--gitignore-radius-control);
  font: inherit;
}

.gitignore-control,
.gitignore-textarea {
  inline-size: 100%;
  background: var(--gitignore-surface);
  color: var(--gitignore-text);
}

.gitignore-control {
  min-block-size: var(--gitignore-control-min-height);
  padding: 8px 10px;
}

.gitignore-textarea {
  min-block-size: 180px;
  padding: 11px 12px;
  resize: vertical;
  font-family: "Cascadia Code", Consolas, monospace;
  line-height: 1.55;
  tab-size: 4;
}

/* Template selection */
.gitignore-template-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--gitignore-gap-wide);
  margin-block: 18px 12px;
}

.gitignore-search-field {
  inline-size: min(480px, 100%);
}

.gitignore-selection-count {
  padding-block-end: 10px;
  color: var(--gitignore-muted);
  white-space: nowrap;
}

.gitignore-template-groups {
  display: grid;
  gap: var(--gitignore-gap-standard);
}

.gitignore-template-group {
  min-inline-size: 0;
  margin: 0;
  padding: var(--gitignore-gap-standard);
  border: 1px solid var(--gitignore-border);
  border-radius: var(--gitignore-radius-group);
}

.gitignore-template-group legend {
  padding-inline: 7px;
  font-weight: 700;
}

.gitignore-template-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: var(--gitignore-gap-compact);
}

.gitignore-template-card {
  display: flex;
  align-items: flex-start;
  gap: var(--gitignore-gap-compact);
  min-block-size: 76px;
  padding: 10px;
  border: 1px solid var(--gitignore-border);
  border-radius: var(--gitignore-radius-control);
  background: var(--gitignore-surface);
  cursor: pointer;
}

.gitignore-template-card input {
  inline-size: 18px;
  block-size: 18px;
  margin: 2px 0 0;
  accent-color: var(--gitignore-primary);
}

.gitignore-template-copy {
  display: grid;
  gap: 4px;
}

.gitignore-template-copy small {
  color: var(--gitignore-muted);
  line-height: 1.4;
}

.gitignore-empty-state {
  margin: 0;
  padding: 20px;
  text-align: center;
  color: var(--gitignore-muted);
}

/* Source input and actions */
.gitignore-input-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gitignore-gap-wide);
}

.gitignore-input-column {
  min-inline-size: 0;
}

.gitignore-file-drop {
  display: grid;
  place-items: center;
  gap: 5px;
  min-block-size: 92px;
  margin-block-end: var(--gitignore-gap-standard);
  padding: var(--gitignore-gap-standard);
  border: 2px dashed var(--gitignore-border-strong);
  border-radius: var(--gitignore-radius-group);
  background: var(--gitignore-surface);
  text-align: center;
  cursor: pointer;
}

.gitignore-file-drop span {
  color: var(--gitignore-muted);
  overflow-wrap: anywhere;
}

.gitignore-file-drop input {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

.gitignore-actions {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: var(--gitignore-gap-compact);
}

.gitignore-actions--spaced {
  margin-block-start: var(--gitignore-gap-wide);
}

.gitignore-button {
  min-block-size: var(--gitignore-button-min-height);
  padding: 8px 15px;
  background: var(--gitignore-surface);
  color: var(--gitignore-text);
  font-weight: 700;
  cursor: pointer;
}

.gitignore-button--primary {
  border-color: var(--gitignore-primary);
  background: var(--gitignore-primary);
  color: #ffffff;
}

.gitignore-message {
  min-block-size: 24px;
  margin: 12px 0 0;
  color: var(--gitignore-muted);
}

/* Interactive and feedback states */
.gitignore-control:focus-visible,
.gitignore-textarea:focus-visible,
.gitignore-button:focus-visible,
.gitignore-template-card:has(input:focus-visible),
.gitignore-file-drop:has(input:focus-visible) {
  outline: 3px solid color-mix(in srgb, var(--gitignore-focus) 35%, transparent);
  outline-offset: 2px;
  border-color: var(--gitignore-focus);
}

.gitignore-template-card:hover {
  border-color: var(--gitignore-border-strong);
}

.gitignore-template-card:has(input:checked) {
  border-color: var(--gitignore-primary);
  background: color-mix(in srgb, var(--gitignore-primary) 8%, var(--gitignore-surface));
}

.gitignore-file-drop.is-dragging {
  border-color: var(--gitignore-primary);
  background: color-mix(in srgb, var(--gitignore-primary) 10%, var(--gitignore-surface));
}

.gitignore-button:hover:not(:disabled) {
  border-color: var(--gitignore-border-strong);
}

.gitignore-button--primary:hover:not(:disabled) {
  border-color: var(--gitignore-primary-hover);
  background: var(--gitignore-primary-hover);
}

.gitignore-button:disabled {
  opacity: 0.48;
  cursor: not-allowed;
}

.gitignore-message[data-kind="success"] { color: var(--gitignore-success); }
.gitignore-message[data-kind="warning"] { color: var(--gitignore-warning); }
.gitignore-message[data-kind="error"] { color: var(--gitignore-error); }

/* Generated result */
.gitignore-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 10px;
  margin: 0 0 14px;
}

.gitignore-stat {
  padding: 11px 12px;
  border: 1px solid var(--gitignore-border);
  border-radius: var(--gitignore-radius-control);
  background: var(--gitignore-surface);
}

.gitignore-stat-label {
  color: var(--gitignore-muted);
  font-size: 0.82rem;
}

.gitignore-stat-value {
  margin: 4px 0 0;
  font-size: 1.2rem;
  font-weight: 700;
}

.gitignore-warning {
  margin-block-end: 14px;
  padding: 12px 14px;
  border: 1px solid color-mix(in srgb, var(--gitignore-warning) 45%, var(--gitignore-border));
  border-radius: var(--gitignore-radius-control);
  background: color-mix(in srgb, var(--gitignore-warning) 8%, var(--gitignore-panel));
  color: var(--gitignore-warning);
}

.gitignore-warning-title {
  margin-block-end: 7px;
  font-size: 1rem;
}

.gitignore-warning-list {
  margin: 0;
  padding-inline-start: 22px;
}

.gitignore-output {
  min-block-size: 460px;
}

/* About this tool */
.gitignore-about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gitignore-gap-section);
}

.gitignore-about ul,
.gitignore-about ol {
  line-height: 1.75;
}

.gitignore-about code {
  padding: 2px 5px;
  border-radius: 4px;
  background: var(--gitignore-surface);
  font-family: "Cascadia Code", Consolas, monospace;
}

/* Utilities */
.gitignore-visually-hidden {
  position: fixed;
  inline-size: 1px;
  block-size: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

[hidden] {
  display: none !important;
}

/* Responsive layout */
@media (max-width: 900px) {
  .gitignore-settings-grid,
  .gitignore-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gitignore-input-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .gitignore-main {
    inline-size: min(100% - 16px, 1280px);
    padding-block-start: 14px;
  }

  .gitignore-panel {
    padding: var(--gitignore-panel-padding-mobile);
  }

  .gitignore-settings-grid,
  .gitignore-stats,
  .gitignore-about-grid {
    grid-template-columns: 1fr;
  }

  .gitignore-template-heading,
  .gitignore-panel-heading {
    display: grid;
  }

  .gitignore-selection-count {
    padding-block-end: 0;
  }

  .gitignore-actions--compact {
    justify-content: stretch;
  }

  .gitignore-actions--compact .gitignore-button {
    flex: 1 1 160px;
  }
}