/* ============================================================
   invoice.css — AI Invoice Assistant styles
   Uses design tokens from ../../css/theme.css
   No hardcoded colors — all values via CSS variables
   ============================================================ */

/* ── Reset & Base ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body {
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Header ── */
.inv-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.inv-header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.inv-back-link {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--transition);
}

.inv-back-link:hover {
  opacity: 0.75;
}

.inv-header-divider {
  color: var(--border);
}

.inv-header-title {
  font-size: 0.9rem;
  color: var(--muted);
}

.inv-badge {
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}

/* ── Main layout ── */
.inv-main {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 0;
  flex: 1;
  min-height: 0;
}

/* ── Left panel ── */
.inv-left {
  border-right: 1px solid var(--border);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  overflow-y: auto;
  overflow-x: hidden; /* add this */
}

/* ── Intro ── */
.inv-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.inv-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 0.6rem;
  word-break: break-word;   /* add this */
  overflow-wrap: break-word; /* add this */
}

.inv-desc {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
}

/* ── Upload zone ── */
.inv-upload-zone {
  border: 2px dashed var(--border2);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition:
    border-color var(--transition),
    background var(--transition);
  background: var(--surface);
}

.inv-upload-zone:hover,
.inv-upload-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.inv-upload-zone.has-file {
  border-color: var(--accent);
  border-style: solid;
  background: var(--accent-glow);
}

/* Hide the actual file input but keep it clickable */
#file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.inv-upload-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.inv-upload-text {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.inv-upload-sub {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.inv-upload-limit {
  font-size: 0.75rem;
  color: var(--faint);
  letter-spacing: 0.03em;
}

/* ── Extract button ── */
.inv-btn {
  width: 100%;
  padding: 0.85rem;
  border-radius: var(--radius-sm);
  border: none;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  background: var(--accent);
  color: #061318;
  transition:
    background var(--transition),
    transform var(--transition),
    opacity var(--transition);
}

.inv-btn:hover:not(:disabled) {
  background: #1dcfbc;
  transform: translateY(-1px);
}

.inv-btn:disabled {
  background: var(--surface2);
  color: var(--faint);
  cursor: not-allowed;
  transform: none;
}

/* ── Status message ── */
.inv-status {
  font-size: 0.85rem;
  color: var(--muted);
  min-height: 1.2rem;
}

.inv-status.error {
  color: #f87171;
}

/* ── How it works ── */
.inv-how {
  margin-top: auto;
}

.inv-how-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.inv-how-steps {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.inv-step {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.83rem;
  color: var(--muted);
}

.inv-step-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--surface2);
  border: 1px solid var(--border2);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ── Right panel ── */
.inv-right {
  padding: 2rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

/* ── Empty state ── */
.inv-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-align: center;
  opacity: 0.5;
}

.inv-empty-icon {
  font-size: 3rem;
}

.inv-empty-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}

.inv-empty-sub {
  font-size: 0.85rem;
  color: var(--muted);
  max-width: 28ch;
  line-height: 1.6;
}

/* ── Loading state ── */
.inv-loading {
  flex: 1;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  text-align: center;
}

.inv-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.inv-loading-text {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.inv-loading-sub {
  font-size: 0.82rem;
  color: var(--muted);
}

/* ── Results state ── */
.inv-results {
  display: none;
  flex-direction: column;
  gap: 1.5rem;
}

/* ── Summary cards grid ── */
.inv-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}

.inv-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  transition: border-color var(--transition);
}

.inv-card:hover {
  border-color: var(--border2);
}

.inv-card-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.inv-card-value {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  word-break: break-word;
}

.inv-card-value.accent {
  color: var(--accent);
  font-size: 1.3rem;
}

/* ── Line items table ── */
.inv-table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.inv-table-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.inv-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.inv-table th {
  text-align: left;
  padding: 0.5rem 0.75rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

.inv-table td {
  padding: 0.65rem 0.75rem;
  color: var(--text);
  border-bottom: 1px solid var(--surface2);
  vertical-align: top;
}

.inv-table tbody tr:last-child td {
  border-bottom: none;
}

.inv-table tbody tr:hover {
  background: var(--surface2);
}

.inv-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

/* ── Footer ── */
.inv-footer {
  border-top: 1px solid var(--border);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--faint);
}

/* ── Responsive ── */
@media (max-width: 860px) {
  .inv-main {
    grid-template-columns: 1fr;
  }

  .inv-left {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
}

@media (max-width: 640px) {
  .inv-header {
    padding: 1rem;
  }

  .inv-left,
  .inv-right {
    padding: 1.25rem;
  }

  .inv-footer {
    flex-direction: column;
    gap: 0.25rem;
    text-align: center;
  }
}

.inv-upload-coming {
  font-size: 0.72rem;
  color: var(--accent);
  opacity: 0.6;
  margin-top: 0.3rem;
  letter-spacing: 0.03em;
}

/* ── Language Toggle ── */
.inv-header .lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.2rem;
}

.inv-header .lang-btn {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.6rem;
  border-radius: 5px;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  font-family: var(--font-body);
  letter-spacing: 0.05em;
}

.inv-header .lang-btn.active {
  background: var(--accent);
  color: #061318;
}

.inv-header .lang-btn:hover:not(.active) {
  color: var(--text);
}