:root {
  --bg: #f3f6fd;
  --surface: #ffffff;
  --surface-soft: #fbfcff;
  --text: #1d2442;
  --muted: #606a8f;
  --brand: #2864ff;
  --brand-dark: #1744b8;
  --border: #dce4f8;
  --topbar-start: #112966;
  --topbar-end: #2864ff;
  --tab-bg: #f6f8ff;
  --tab-text: #1b3f9c;
  --field-bg: #ffffff;
  --action-text: #1d356f;
  --footer: #6d789f;
  --alert-info-border: #bfd3ff;
  --alert-info-text: #2141a3;
  --alert-info-bg: #ecf2ff;
  --alert-error-border: #ffc4c4;
  --alert-error-text: #9f1f1f;
  --alert-error-bg: #ffeded;
  --ok: #207d4d;
  --warn: #a66808;
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --shadow: 0 12px 28px rgba(23, 53, 130, 0.08);
}

[data-theme="dark"] {
  --bg: #0d1220;
  --surface: #141c32;
  --surface-soft: #192340;
  --text: #e8efff;
  --muted: #9aaace;
  --brand: #5c8dff;
  --brand-dark: #3f72f6;
  --border: #253360;
  --topbar-start: #090f22;
  --topbar-end: #162860;
  --tab-bg: #1a2648;
  --tab-text: #c6d5ff;
  --field-bg: #0f1830;
  --action-text: #c9d8ff;
  --footer: #8898c8;
  --alert-info-border: #3f5eb4;
  --alert-info-text: #d3dfff;
  --alert-info-bg: #182050;
  --alert-error-border: #7b3232;
  --alert-error-text: #ffd7d7;
  --alert-error-bg: #3a1515;
  --ok: #4ade80;
  --warn: #fbbf24;
  --danger: #f87171;
  --danger-bg: #2d0f0f;
  --danger-border: #7f1d1d;
  --shadow: 0 14px 36px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  width: min(1080px, 94%);
  margin: 0 auto;
}

/* ── Topbar ─────────────────────────────────────────────────────────── */
.topbar {
  background: linear-gradient(130deg, var(--topbar-start), var(--topbar-end));
  color: #fff;
  padding: 1.6rem 0;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.topbar-icon { font-size: 1.8rem; line-height: 1; }

.header-actions { display: flex; gap: 0.55rem; }

.app-kicker {
  margin: 0;
  opacity: 0.85;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

h1 {
  margin: 0.25rem 0 0;
  font-size: clamp(1.3rem, 3vw, 2rem);
}

main { padding: 1rem 0 2rem; }

/* ── Panel ──────────────────────────────────────────────────────────── */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 1rem;
  margin-bottom: 1rem;
}

.muted { color: var(--muted); }

/* ── Auth tabs ──────────────────────────────────────────────────────── */
.auth-tabs {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 0.9rem;
}

.tab {
  border: 0;
  background: var(--tab-bg);
  color: var(--tab-text);
  font: inherit;
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.tab.active { background: var(--brand); color: #fff; }

.hidden { display: none !important; }

/* ── Forms ──────────────────────────────────────────────────────────── */
.form-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.form-grid .full { grid-column: 1 / -1; }

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.93rem;
  font-weight: 600;
}

.field-hint {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--muted);
  margin-top: 0.1rem;
}

input, select, textarea {
  font: inherit;
  border: 1px solid var(--border);
  background: var(--field-bg);
  border-radius: 10px;
  padding: 0.62rem 0.75rem;
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
}

/* Foco con brillo azul */
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(40, 100, 255, 0.15);
}

.actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

/* ── Buttons ────────────────────────────────────────────────────────── */
.btn {
  border: 0;
  cursor: pointer;
  border-radius: 10px;
  padding: 0.62rem 1rem;
  font: inherit;
  font-weight: 700;
  background: var(--brand);
  color: #fff;
  transition: background 0.15s, transform 0.12s, box-shadow 0.15s;
  box-shadow: 0 2px 8px rgba(40, 100, 255, 0.22);
}

.btn:hover:not(:disabled) {
  background: var(--brand-dark);
  transform: translateY(-1px);
  box-shadow: 0 5px 16px rgba(40, 100, 255, 0.32);
}

.btn:active:not(:disabled) { transform: translateY(0); }

.btn:disabled { opacity: 0.55; cursor: not-allowed; box-shadow: none; }

.btn-secondary {
  background: #e7efff;
  color: #143ca9;
  box-shadow: none;
}

.btn-secondary:hover:not(:disabled) {
  background: #d9e6ff;
  transform: translateY(-1px);
  box-shadow: 0 3px 10px rgba(40, 100, 255, 0.15);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
  box-shadow: none;
}

.btn-ghost:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
  box-shadow: none;
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid var(--danger-border);
  box-shadow: none;
}

.btn-danger:hover:not(:disabled) { background: var(--danger-border); }

/* ── Remember me ────────────────────────────────────────────────────── */
.remember-row { grid-column: 1 / -1; }

.remember-label {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
}

.remember-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  padding: 0;
  cursor: pointer;
  accent-color: var(--brand);
}

/* ── Upload indicator ───────────────────────────────────────────────── */
.uploading-text {
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* ── Expiry banner ──────────────────────────────────────────────────── */
.expiry-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: #fff8e6;
  border: 1.5px solid #f5c842;
  color: #7a5000;
  border-radius: 12px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-weight: 600;
  font-size: 0.93rem;
}

[data-theme="dark"] .expiry-banner {
  background: #2a1c00;
  border-color: #92600a;
  color: #fbbf24;
}

.expiry-banner-close {
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 1rem;
  color: inherit;
  opacity: 0.7;
  padding: 0.1rem 0.3rem;
  border-radius: 6px;
  flex-shrink: 0;
  transition: opacity 0.15s;
}

.expiry-banner-close:hover { opacity: 1; }

/* ── Stats grid ─────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.stat {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.8rem;
  background: var(--surface-soft);
}

.stat p { margin: 0; color: var(--muted); font-size: 0.9rem; }

.stat strong {
  display: inline-block;
  margin-top: 0.35rem;
  font-size: 1.55rem;
}

.stat.warn strong   { color: var(--warn); }
.stat.danger strong { color: var(--danger); }
.stat.ok-stat strong { color: var(--ok); }
.stat.no-expiry-stat strong { color: var(--muted); }

/* ── Filters ────────────────────────────────────────────────────────── */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.filter-label select,
.filter-label input { font-size: 0.9rem; }

.filter-search input { min-width: 200px; }

.filters-bar {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 0.75rem;
}

.filters-bar .filter-label select { min-width: 180px; }

/* ── Date filter groups ─────────────────────────────────────────────── */
.date-filter-groups {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.date-filter-group {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.65rem 0.9rem 0.8rem;
  background: var(--surface-soft);
  flex: 1;
  min-width: 260px;
}

.date-filter-group legend {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--brand);
  padding: 0 0.3rem;
  letter-spacing: 0.01em;
}

.date-filter-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-top: 0.4rem;
}

.date-filter-row .filter-label input { min-width: 140px; }

.btn-clear-dates {
  align-self: flex-end;
  border: 1px solid var(--border);
  background: var(--field-bg);
  color: var(--muted);
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.btn-clear-dates:hover {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: var(--danger-border);
}

/* ── Loading state ──────────────────────────────────────────────────── */
.loading-state {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--muted);
  font-size: 0.95rem;
  padding: 1rem 0;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
  flex-shrink: 0;
}

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

/* ── Docs grid ──────────────────────────────────────────────────────── */
.docs-grid { display: grid; gap: 0.7rem; }

.doc-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.8rem;
  background: var(--surface);
  transition: box-shadow 0.18s, border-color 0.18s, transform 0.15s;
}

/* Hover: eleva la tarjeta y resalta el borde */
.doc-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(23, 53, 130, 0.13);
  border-color: #a8c0ff;
}

[data-theme="dark"] .doc-item:hover { border-color: #3a5099; }

.doc-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.doc-meta { margin: 0.3rem 0 0; color: var(--muted); font-size: 0.9rem; }

/* ── File preview ───────────────────────────────────────────────────── */
.doc-preview {
  display: block;
  width: 100%;
  height: 230px;
  margin-top: 0.55rem;
  object-fit: contain;
  object-position: center;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--field-bg);
  cursor: zoom-in;
  transition: opacity 0.15s;
}

.doc-preview:hover { opacity: 0.88; }

.doc-preview-iframe {
  display: block;
  width: 100%;
  height: 420px;
  margin-top: 0.55rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--field-bg);
}

.doc-preview-pdf {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.55rem;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--field-bg);
  text-decoration: none;
  color: var(--action-text);
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.15s;
}

.doc-preview-pdf:hover { background: #f0f5ff; }
.doc-preview-pdf .pdf-icon { font-size: 1.5rem; line-height: 1; }

.doc-preview-file {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.55rem;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--field-bg);
  text-decoration: none;
  color: var(--action-text);
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.15s;
}

.doc-preview-file:hover { background: #f0f5ff; }

/* ── Badges ─────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.2rem 0.52rem;
  border-radius: 999px;
  white-space: nowrap;
  line-height: 1;
  border: 1.5px solid transparent;
  flex-shrink: 0;
  align-self: flex-start;
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.badge.ok     { color: var(--ok);    background: #e8f7ef; border-color: #b7e9ce; }
.badge.warn   { color: var(--warn);  background: #fff3df; border-color: #fdd89a; }
.badge.danger { color: var(--danger); background: #ffe8e8; border-color: #fdb5b5; }
.badge.none   { color: var(--muted); background: var(--surface-soft); border-color: var(--border); }

/* ── Doc actions ────────────────────────────────────────────────────── */
.doc-actions {
  margin-top: 0.6rem;
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.doc-actions a,
.doc-actions button {
  font: inherit;
  border: 1px solid var(--border);
  background: var(--field-bg);
  border-radius: 8px;
  padding: 0.35rem 0.62rem;
  text-decoration: none;
  color: var(--action-text);
  cursor: pointer;
  font-size: 0.88rem;
  transition: background 0.15s;
}

.doc-actions a:hover,
.doc-actions button:hover { background: #f0f5ff; }

.doc-actions .btnDelete {
  color: var(--danger);
  border-color: var(--danger-border);
  background: var(--danger-bg);
}

.doc-actions .btnDelete:hover { background: var(--danger-border); }

/* ── Alerts ─────────────────────────────────────────────────────────── */
.alert {
  margin-bottom: 0.85rem;
  border-radius: 10px;
  padding: 0.65rem 0.8rem;
  border: 1px solid;
  font-weight: 600;
  animation: slideDown 0.2s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.alert.info  { border-color: var(--alert-info-border);  color: var(--alert-info-text);  background: var(--alert-info-bg); }
.alert.error { border-color: var(--alert-error-border); color: var(--alert-error-text); background: var(--alert-error-bg); }

/* ── Lightbox ───────────────────────────────────────────────────────── */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
  animation: lbFadeIn 0.18s ease;
  backdrop-filter: blur(6px);
}

@keyframes lbFadeIn { from { opacity: 0; } to { opacity: 1; } }

.lightbox-box {
  position: relative;
  max-width: min(92vw, 1100px);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.lightbox-img {
  max-width: 100%;
  max-height: calc(92vh - 60px);
  object-fit: contain;
  border-radius: 10px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  animation: lbZoomIn 0.2s ease;
}

@keyframes lbZoomIn {
  from { transform: scale(0.93); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

.lightbox-actions { display: flex; gap: 0.6rem; }

.lightbox-btn {
  border: 0;
  cursor: pointer;
  border-radius: 10px;
  padding: 0.55rem 1.1rem;
  font: inherit;
  font-weight: 700;
  font-size: 0.9rem;
  transition: background 0.15s;
}

.lightbox-btn-download { background: var(--brand); color: #fff; }
.lightbox-btn-download:hover { background: var(--brand-dark); }

.lightbox-btn-close {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.4);
}

.lightbox-btn-close:hover { background: rgba(255,255,255,0.28); }

/* ── Edit modal ─────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  padding: 1rem;
  animation: lbFadeIn 0.18s ease;
  backdrop-filter: blur(4px);
}

.modal-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.25);
  padding: 1.4rem;
  width: min(560px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  animation: lbZoomIn 0.2s ease;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.1rem;
}

.modal-header h3 { margin: 0; font-size: 1.15rem; }

.modal-close {
  border: 0;
  background: var(--surface-soft);
  border-radius: 8px;
  padding: 0.3rem 0.55rem;
  cursor: pointer;
  font-size: 1rem;
  color: var(--muted);
  transition: background 0.15s;
}

.modal-close:hover { background: var(--border); }

/* ── Footer ─────────────────────────────────────────────────────────── */
footer {
  color: var(--footer);
  text-align: center;
  padding: 1.25rem 0 1.5rem;
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}