/* === Design Tokens === */
:root {
  --c-bg: #f8fafc;
  --c-surface: #ffffff;
  --c-border: #e2e8f0;
  --c-text: #1e293b;
  --c-text-dim: #64748b;
  --c-primary: #2563eb;
  --c-primary-h: #1d4ed8;
  --c-success: #059669;
  --c-warning: #d97706;
  --c-danger: #dc2626;
  --c-info: #0284c7;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 4px 12px rgba(0,0,0,.1);
}

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  color: var(--c-text);
  background: var(--c-bg);
  padding: 1rem 1rem 5rem;
  max-width: 720px;
  margin: 0 auto;
  -webkit-font-smoothing: antialiased;
}

h1 { font-size: 1.25rem; font-weight: 700; margin-bottom: .75rem; }
h2 { font-size: 1.1rem; font-weight: 600; margin-bottom: .5rem; }
h3 { font-size: .95rem; font-weight: 600; margin-bottom: .5rem; color: var(--c-text-dim); }
a { color: var(--c-primary); text-decoration: none; }

/* === Buttons === */
button, .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .7rem 1.2rem; font-size: .9rem; font-weight: 600;
  border: none; border-radius: var(--radius-sm); cursor: pointer;
  transition: background .15s, transform .1s, opacity .15s;
  -webkit-tap-highlight-color: transparent;
  line-height: 1.3;
}
button:active, .btn:active { transform: scale(.97); }
button:disabled, .btn:disabled { opacity: .5; pointer-events: none; }

.btn--primary, button { background: var(--c-primary); color: #fff; }
.btn--primary:active, button:active { background: var(--c-primary-h); }
.btn--secondary { background: var(--c-surface); color: var(--c-primary); border: 1.5px solid var(--c-border); }
.btn--secondary:active { background: var(--c-bg); }
.btn--danger { background: var(--c-danger); color: #fff; }
.btn--ghost { background: transparent; color: var(--c-text-dim); padding: .5rem; }
.btn--ghost:active { background: var(--c-bg); }
.btn--sm { padding: .4rem .7rem; font-size: .8rem; }

/* === Cards === */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: .85rem 1rem;
  margin-bottom: .6rem;
  box-shadow: var(--shadow);
}
.card--flush { padding: 0; overflow: hidden; }

/* === Badges === */
.badge {
  display: inline-block;
  padding: .15rem .5rem;
  font-size: .7rem;
  font-weight: 600;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: .03em;
  white-space: nowrap;
}
.badge--success { background: #d1fae5; color: #065f46; }
.badge--warning { background: #fef3c7; color: #92400e; }
.badge--danger { background: #fee2e2; color: #991b1b; }
.badge--info { background: #dbeafe; color: #1e40af; }

/* === Summary Cards === */
.summary-cards {
  display: flex; gap: .6rem; margin-bottom: 1rem; overflow-x: auto;
}
.summary-card {
  flex: 1; min-width: 0;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: .6rem .8rem;
  text-align: center;
  box-shadow: var(--shadow);
}
.summary-card .num { font-size: 1.5rem; font-weight: 700; line-height: 1.2; }
.summary-card .label { font-size: .7rem; color: var(--c-text-dim); text-transform: uppercase; letter-spacing: .04em; }

/* === Month Bar === */
.month-bar {
  display: flex; align-items: center; gap: .5rem;
  margin-bottom: 1rem;
  position: sticky; top: 0; z-index: 10;
  background: var(--c-bg); padding: .6rem 0;
}
.month-bar input[type="month"] {
  flex: 1; padding: .55rem .7rem; font-size: .95rem;
  border: 1.5px solid var(--c-border); border-radius: var(--radius-sm);
  background: var(--c-surface); color: var(--c-text);
}
.month-bar .btn { flex-shrink: 0; }

/* === Forms === */
label { display: flex; flex-direction: column; gap: .2rem; font-size: .85rem; font-weight: 500; color: var(--c-text-dim); }
input, select, textarea {
  padding: .6rem .75rem; font-size: .95rem;
  border: 1.5px solid var(--c-border); border-radius: var(--radius-sm);
  background: var(--c-surface); color: var(--c-text);
  width: 100%; transition: border-color .15s;
}
input:focus, select:focus { outline: none; border-color: var(--c-primary); }
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M2 4l4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .7rem center; padding-right: 2rem; }

/* === Spinner === */
.spinner-overlay {
  position: fixed; inset: 0; background: rgba(248,250,252,.8);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; opacity: 0; pointer-events: none;
  transition: opacity .2s;
}
.spinner-overlay.active { opacity: 1; pointer-events: auto; }
.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--c-border);
  border-top-color: var(--c-primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === Toast === */
.toast-container {
  position: fixed; bottom: 5rem; left: 50%; transform: translateX(-50%);
  z-index: 200; display: flex; flex-direction: column; gap: .5rem;
  width: calc(100% - 2rem); max-width: 400px; pointer-events: none;
}
.toast {
  padding: .7rem 1rem; border-radius: var(--radius-sm);
  font-size: .85rem; font-weight: 500;
  box-shadow: var(--shadow-lg); pointer-events: auto;
  animation: toastIn .25s ease-out;
}
.toast--success { background: #d1fae5; color: #065f46; }
.toast--error { background: #fee2e2; color: #991b1b; }
.toast--info { background: #dbeafe; color: #1e40af; }
@keyframes toastIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.btn--dirty { background: var(--c-warning); color: #fff; }
.btn--dirty:active { background: #b45309; }

/* === Progress Bar === */
.progress-bar {
  width: 100%; height: 4px; background: var(--c-border);
  border-radius: 2px; overflow: hidden; margin: .5rem 0;
}
.progress-bar .fill {
  height: 100%; background: var(--c-primary);
  border-radius: 2px; transition: width .3s;
}

/* === Empty State === */
.empty-state {
  text-align: center; padding: 2rem 1rem; color: var(--c-text-dim);
}
.empty-state p { font-size: .9rem; }

/* === Tab Bar === */
.tab-bar {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: flex; background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  z-index: 50; padding-bottom: env(safe-area-inset-bottom, 0);
}
.tab-item {
  flex: 1; display: flex; flex-direction: column; align-items: center; gap: .15rem;
  padding: .5rem 0; font-size: .65rem; font-weight: 500;
  color: var(--c-text-dim); text-decoration: none;
  transition: color .15s;
}
.tab-item svg { width: 22px; height: 22px; }
.tab-item.active { color: var(--c-primary); }

/* === Page-specific: Capture === */
video { width: 100%; background: #000; border-radius: var(--radius); aspect-ratio: 4/3; object-fit: cover; }
.controls { display: flex; gap: .5rem; margin: .6rem 0; }
.controls button { flex: 1; }
.thumbs { display: flex; gap: .5rem; overflow-x: auto; padding: .25rem 0; }
.thumbs img.thumb { height: 64px; border-radius: var(--radius-sm); border: 2px solid var(--c-border); }
#review { margin-top: 1rem; display: flex; flex-direction: column; gap: .6rem; }
#pdf-preview { width: 100%; height: 350px; border: 1px solid var(--c-border); border-radius: var(--radius-sm); }

/* === Modal === */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 300; opacity: 0; pointer-events: none;
  transition: opacity .2s;
}
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal {
  background: var(--c-surface); border-radius: var(--radius);
  width: calc(100% - 2rem); max-width: 600px; max-height: 90vh;
  display: flex; flex-direction: column; box-shadow: var(--shadow-lg);
  animation: toastIn .2s ease-out;
}
.modal-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: .75rem 1rem; border-bottom: 1px solid var(--c-border);
}
.modal-header h3 { margin: 0; font-size: .9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.modal-body { flex: 1; overflow: auto; }
.modal-body iframe, .modal-body img { width: 100%; height: 70vh; border: none; display: block; }
.modal-body img { height: auto; max-height: 70vh; object-fit: contain; }

/* === File Icon Button === */
.file-icon-btn {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .3rem .5rem; border-radius: var(--radius-sm);
  background: #f0fdf4; border: 1px solid #bbf7d0; color: #065f46;
  cursor: pointer; font-size: .75rem; font-weight: 600;
  transition: background .15s;
}
.file-icon-btn:active { background: #dcfce7; }
.file-icon-btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.edit-icon-btn {
  background: none; border: none; padding: .25rem; cursor: pointer;
  color: var(--c-text-dim); display: inline-flex;
  transition: color .15s;
}
.edit-icon-btn:active { color: var(--c-primary); transform: none; }
.edit-icon-btn svg { width: 16px; height: 16px; }
.receipt-cell { display: flex; align-items: center; gap: .35rem; flex-wrap: wrap; }

/* === File Picker === */
.pick-btn {
  display: flex; align-items: center; gap: .35rem;
  padding: .4rem .6rem; border-radius: var(--radius-sm);
  background: var(--c-surface); border: 1.5px solid var(--c-border);
  color: var(--c-text); font-size: .8rem; cursor: pointer;
  text-align: left; width: 100%; transition: border-color .15s;
}
.pick-btn:active { border-color: var(--c-primary); }
.pick-btn.has-value { border-color: var(--c-success); background: #f0fdf4; }
.pick-btn .pick-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pick-btn .pick-clear { color: var(--c-text-dim); font-size: .9rem; padding: 0 .2rem; line-height: 1; }
.picker-entry-info {
  display: flex; gap: .6rem; align-items: center; flex-wrap: wrap;
  padding: .55rem .85rem; background: #eff6ff; border-bottom: 1px solid var(--c-border);
  font-size: .8rem; color: var(--c-text);
}
.picker-entry-info .pi-amount { font-weight: 700; color: var(--c-primary); }
.picker-search {
  padding: .6rem .75rem; font-size: .95rem; border: none;
  border-bottom: 1px solid var(--c-border); width: 100%;
  outline: none; background: var(--c-surface);
}
.picker-list { list-style: none; overflow-y: auto; max-height: 60vh; }
.picker-item {
  display: flex; align-items: center; gap: .6rem;
  padding: .65rem .85rem; border-bottom: 1px solid var(--c-border);
  cursor: pointer; transition: background .1s;
}
.picker-item:active { background: var(--c-bg); }
.picker-item.selected { background: #eff6ff; }
.picker-item .pi-icon { flex-shrink: 0; width: 28px; height: 28px; color: var(--c-text-dim); }
.picker-item .pi-main { flex: 1; min-width: 0; }
.picker-item .pi-name { font-size: .8rem; font-weight: 600; color: var(--c-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.picker-item .pi-meta { font-size: .7rem; color: var(--c-text-dim); display: flex; gap: .6rem; }
.picker-item .pi-amount { font-weight: 600; color: var(--c-primary); }
.picker-empty { padding: 1.5rem; text-align: center; color: var(--c-text-dim); font-size: .85rem; }

/* === Page-specific: Reconcile === */
#table { width: 100%; border-collapse: collapse; margin-top: .5rem; }
#table th, #table td { border-bottom: 1px solid var(--c-border); padding: .55rem .4rem; text-align: left; font-size: .85rem; }
#table th { font-size: .7rem; text-transform: uppercase; color: var(--c-text-dim); letter-spacing: .04em; }
#table select { font-size: .8rem; padding: .4rem .5rem; }
.linked-label { font-size: .8rem; color: var(--c-success); word-break: break-all; }
.unlink-btn { background: var(--c-danger); padding: .2rem .5rem; font-size: .7rem; border-radius: var(--radius-sm); }

/* === Page-specific: Sync === */
.action-group { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1rem; }
.action-group button { flex: none; }
.file-list { list-style: none; }
.file-list li { padding: .4rem 0; border-bottom: 1px solid var(--c-border); font-size: .85rem; display: flex; align-items: center; gap: .5rem; word-break: break-all; }

/* === Utility === */
.status-linked, .status-already_linked { color: var(--c-success); }
.status-unmatched { color: var(--c-danger); }
.status-ambiguous { color: var(--c-warning); }
.mt-1 { margin-top: .5rem; }
.mb-1 { margin-bottom: .5rem; }
.gap-row { display: flex; gap: .5rem; flex-wrap: wrap; }

/* === Responsive: Desktop === */
@media (min-width: 768px) {
  body { padding-bottom: 2rem; }
  .tab-bar { position: static; border-top: none; border-bottom: 1px solid var(--c-border); margin-bottom: 1.5rem; }
  .tab-item { flex-direction: row; gap: .4rem; font-size: .8rem; padding: .75rem 1rem; }
  .summary-cards { flex-wrap: nowrap; }
  .toast-container { bottom: 1.5rem; }
}