/*
  電帳法対応 証憑仕分け・検索AI デモ — スマホファーストUI
  Clean design system トークン準拠（b2-denchoho-ai/static/style.css と揃えている）
  - 余白: 8ptベースライングリッド
  - タイポグラフィスケール: 12/14/16/20/24/32
  - 配色: primary #3B82F6 / neutral #111827 / success #16A34A / warning #D97706 / danger #DC2626 / surface #FFFFFF
  - タップターゲット: 44px以上
*/

:root {
  --color-primary: #3B82F6;
  --color-primary-dark: #1D4ED8;
  --color-success: #16A34A;
  --color-warning: #D97706;
  --color-danger: #DC2626;
  --color-surface: #FFFFFF;
  --color-text: #111827;
  --color-text-muted: #4B5563;
  --color-border: #E5E7EB;
  --color-bg: #F9FAFB;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;

  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;

  --radius: 12px;
  --radius-sm: 8px;
  --font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Roboto", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-primary-dark);
}

.visually-hidden-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ------------------------------------------------------------------ */
/* Header                                                              */
/* ------------------------------------------------------------------ */
.app-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-2) var(--space-2);
}

.app-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1) var(--space-2);
  max-width: 720px;
  margin: 0 auto;
}

.app-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin: 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  background-color: #DBEAFE;
  color: #1E3A8A;
  border: 1px solid var(--color-primary);
  white-space: nowrap;
}

.app-subtitle {
  max-width: 720px;
  margin: var(--space-1) auto 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* ------------------------------------------------------------------ */
/* Main layout                                                         */
/* ------------------------------------------------------------------ */
.app-main {
  flex: 1;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-2) var(--space-2) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-2);
}

@media (min-width: 480px) {
  .card {
    padding: var(--space-3);
  }
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin: 0 0 var(--space-2);
}

/* ------------------------------------------------------------------ */
/* Upload                                                               */
/* ------------------------------------------------------------------ */
.upload-form {
  display: flex;
}

.upload-dropzone {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-2);
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius);
  background-color: #EFF6FF;
  color: var(--color-primary-dark);
  text-align: center;
  cursor: pointer;
  min-height: 44px;
  transition: background-color 120ms ease;
}

.upload-dropzone:active {
  background-color: #DBEAFE;
}

.upload-dropzone__icon {
  font-size: 40px;
  line-height: 1;
}

.upload-dropzone__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.upload-dropzone__text strong {
  font-size: var(--font-size-lg);
}

.upload-dropzone__text span {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

input[type="file"]:focus-visible + .upload-dropzone,
.upload-dropzone:focus-visible {
  outline: 3px solid var(--color-primary-dark);
  outline-offset: 2px;
}

.upload-status {
  margin-top: var(--space-2);
  min-height: 0;
}

.upload-status:empty {
  margin-top: 0;
}

.status-message {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
}

.status-message--loading {
  background-color: #EFF6FF;
  color: #1E3A8A;
  border: 1px solid var(--color-primary);
}

.status-message--success {
  background-color: #DCFCE7;
  color: #166534;
  border: 1px solid var(--color-success);
}

.status-message--error {
  background-color: #FEE2E2;
  color: #991B1B;
  border: 1px solid var(--color-danger);
}

.spinner {
  width: 18px;
  height: 18px;
  flex: none;
  border-radius: 50%;
  border: 3px solid rgba(29, 78, 216, 0.25);
  border-top-color: var(--color-primary-dark);
  animation: spin 800ms linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation-duration: 2000ms;
  }
}

.hint {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin: var(--space-2) 0 0;
}

.notice-box {
  margin-top: var(--space-2);
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
}

.notice-box p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.notice-box p + p {
  margin-top: 6px;
}

/* ------------------------------------------------------------------ */
/* Results                                                              */
/* ------------------------------------------------------------------ */
.results-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
}

.result-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 700;
}

.empty-state {
  color: var(--color-text-muted);
  padding: var(--space-3) 0;
  font-size: var(--font-size-sm);
}

.empty-state.is-hidden {
  display: none;
}

/* デスクトップ用テーブル / モバイル用カードの出し分け */
.desktop-only {
  display: none;
}

.mobile-only {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 700px) {
  .desktop-only {
    display: block;
  }
  .mobile-only {
    display: none;
  }
}

.table-wrap {
  overflow-x: auto;
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.doc-table th,
.doc-table td {
  padding: 12px var(--space-2);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.doc-table th {
  color: var(--color-text-muted);
  font-weight: 700;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.cell--amount {
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.doc-row--low-confidence,
.result-card--low-confidence {
  background-color: #FFFBEB;
}

.doc-row--low-confidence {
  border-left: 4px solid var(--color-warning);
}

.result-card--low-confidence {
  border-color: var(--color-warning);
}

/* モバイルカード */
.result-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.result-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-1);
}

.result-card__doctype {
  font-weight: 700;
  font-size: var(--font-size-base);
}

.result-card__row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.result-card__row dt {
  color: var(--color-text-muted);
  flex: none;
}

.result-card__row dd {
  margin: 0;
  text-align: right;
  overflow-wrap: anywhere;
}

.result-card__amount {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: var(--font-size-lg);
}

.confidence-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  white-space: nowrap;
}

.confidence-badge--high {
  background-color: #DCFCE7;
  color: #166534;
}

.confidence-badge--medium {
  background-color: #FEF9C3;
  color: #854D0E;
}

.confidence-badge--low {
  background-color: #FEF3C7;
  color: #92400E;
  border: 1px solid var(--color-warning);
}

.button--delete {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-danger);
  border-radius: var(--radius-sm);
  min-height: 36px;
  min-width: 36px;
  padding: 4px 12px;
  font-size: var(--font-size-sm);
  cursor: pointer;
}

.button--delete:hover {
  background-color: #FEE2E2;
}

/* ------------------------------------------------------------------ */
/* Search                                                               */
/* ------------------------------------------------------------------ */
.search-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

@media (min-width: 480px) {
  .search-form {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 700px) {
  .search-form {
    grid-template-columns: repeat(3, 1fr);
    align-items: end;
  }
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.field label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-muted);
}

.field input,
.field select {
  padding: 10px 12px;
  font-size: var(--font-size-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  color: var(--color-text);
  min-height: 44px;
}

.field input:focus-visible,
.field select:focus-visible,
.button:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.field--actions {
  display: flex;
  align-items: center;
}

/* ------------------------------------------------------------------ */
/* Buttons                                                              */
/* ------------------------------------------------------------------ */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  font-weight: 700;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  width: 100%;
}

@media (min-width: 480px) {
  .button {
    width: auto;
  }
}

.button--secondary {
  background-color: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}

.button--secondary:hover {
  background-color: var(--color-bg);
}

/* ------------------------------------------------------------------ */
/* Notice section                                                       */
/* ------------------------------------------------------------------ */
.notice-card {
  background-color: var(--color-bg);
}

.notice-list {
  margin: 0;
  padding-left: 1.2em;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* ------------------------------------------------------------------ */
/* Footer                                                               */
/* ------------------------------------------------------------------ */
.app-footer {
  background-color: var(--color-text);
  color: #F9FAFB;
  padding: var(--space-2);
  text-align: center;
  font-size: var(--font-size-sm);
}

.app-footer p {
  max-width: 720px;
  margin: 0 auto;
}

.app-footer a {
  color: #BFDBFE;
}