/* Integrados Billing — claro, colorido e interactivo */
:root {
  --bg: #eef2ff;
  --bg2: #ffffff;
  --bg3: #f8fafc;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-solid: #3b82f6;
  --accent-hover: #1d4ed8;
  --accent-soft: #dbeafe;
  --brand-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --sidebar-bg: linear-gradient(180deg, #0f172a 0%, #1e1b4b 55%, #312e81 100%);
  --success: #16a34a;
  --success-soft: #dcfce7;
  --success-text: #166534;
  --warning: #d97706;
  --warning-soft: #fef3c7;
  --warning-text: #92400e;
  --danger: #dc2626;
  --danger-soft: #fee2e2;
  --danger-text: #991b1b;
  --violet-soft: #ede9fe;
  --violet-text: #5b21b6;
  --cyan-soft: #cffafe;
  --cyan-text: #0e7490;
  --orange-soft: #ffedd5;
  --orange-text: #c2410c;
  --emerald-soft: #d1fae5;
  --emerald-text: #047857;
  --sidebar: 248px;
  --font: 'Inter', system-ui, sans-serif;
  --display: 'Space Grotesk', sans-serif;
  --shadow-sm: 0 2px 8px rgba(59, 130, 246, 0.08);
  --shadow-md: 0 8px 24px rgba(79, 70, 229, 0.12);
  --shadow-hover: 0 12px 28px rgba(59, 130, 246, 0.18);
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 90% 60% at 100% 0%, rgba(139, 92, 246, 0.14), transparent),
    radial-gradient(ellipse 70% 50% at 0% 100%, rgba(59, 130, 246, 0.12), transparent);
  color: var(--text);
  min-height: 100vh;
}

.hidden { display: none !important; }

code {
  font-size: .8rem;
  background: var(--accent-soft);
  color: var(--accent-hover);
  padding: .15rem .4rem;
  border-radius: 4px;
  border: 1px solid #bfdbfe;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .55rem 1rem; border-radius: 10px; border: none;
  font-weight: 600; font-size: .875rem; cursor: pointer;
  font-family: inherit;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), filter .2s, background .2s, border-color .2s;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--brand-gradient);
  color: #fff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}
.btn-primary:hover {
  filter: brightness(1.06);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
  transform: translateY(-1px);
}
.btn-secondary {
  background: var(--bg2);
  color: var(--accent-hover);
  border: 1.5px solid #c7d2fe;
}
.btn-secondary:hover {
  border-color: var(--accent-solid);
  background: var(--accent-soft);
  transform: translateY(-1px);
}
.btn-danger {
  background: var(--danger-soft);
  color: var(--danger-text);
  border: 1px solid #fecaca;
}
.btn-danger:hover { background: #fecaca; transform: translateY(-1px); }
.btn-sm { padding: .35rem .7rem; font-size: .8rem; border-radius: 8px; }
.btn-full { width: 100%; justify-content: center; }
.btn-text {
  background: none; border: none; color: var(--accent-solid);
  cursor: pointer; font-size: .85rem; font-weight: 600;
  transition: color .2s;
}
.btn-text:hover { color: var(--violet-text); text-decoration: underline; }

.logo-img { height: 40px; width: auto; object-fit: contain; display: block; }
.logo-icon-img { width: 36px; height: 36px; object-fit: contain; flex-shrink: 0; }
.login-brand .logo-img { height: 56px; margin: 0 auto 1rem; }

/* ─── Login ─── */
.login-screen {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
  background: var(--sidebar-bg);
  position: relative;
  overflow: hidden;
}
.login-screen::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.35), transparent 45%),
    radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.3), transparent 40%);
  pointer-events: none;
}
.login-card {
  position: relative;
  width: 100%; max-width: 400px;
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(8px);
}
.login-brand { text-align: center; margin-bottom: 1.75rem; }
.login-brand h1 {
  font-family: var(--display);
  font-size: 1.5rem;
  margin: .5rem 0 .25rem;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.login-brand p { color: var(--muted); font-size: .9rem; }
.login-card label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: .35rem; font-weight: 600; }
.login-card input {
  width: 100%; padding: .75rem .9rem; margin-bottom: 1rem;
  background: var(--bg3); border: 2px solid var(--border); border-radius: 10px;
  color: var(--text); font-family: inherit;
  transition: border-color .2s, box-shadow .2s;
}
.login-card input:focus {
  outline: none;
  border-color: var(--accent-solid);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}
.login-hint { font-size: .75rem; color: var(--muted); margin-top: .75rem; text-align: center; }
.form-error { color: var(--danger-text); font-size: .85rem; margin-top: .5rem; text-align: center; }
.back-link { display: block; text-align: center; margin-top: 1.25rem; color: var(--muted); font-size: .85rem; text-decoration: none; }
.back-link:hover { color: var(--accent-solid); }

/* ─── Layout ─── */
.app { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar);
  background: var(--sidebar-bg);
  display: flex; flex-direction: column;
  position: fixed; inset: 0 auto 0 0;
  box-shadow: 4px 0 24px rgba(30, 27, 75, 0.2);
  z-index: 20;
}
.sidebar::after {
  content: '';
  position: absolute;
  top: 0; right: 0; bottom: 0; width: 1px;
  background: linear-gradient(180deg, rgba(96, 165, 250, 0.4), rgba(167, 139, 250, 0.2));
}
.sidebar-brand {
  display: flex; align-items: center; gap: .6rem;
  padding: 1.35rem 1rem;
  font-family: var(--display); font-weight: 700;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.sidebar-nav { flex: 1; padding: .85rem .65rem; display: flex; flex-direction: column; gap: .35rem; }
.nav-item {
  text-align: left;
  padding: .7rem .9rem;
  border-radius: 10px;
  border: 1px solid transparent;
  background: transparent;
  color: rgba(226, 232, 240, 0.75);
  font-family: inherit; font-size: .9rem;
  cursor: pointer;
  transition: all .22s var(--ease);
}
.nav-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  transform: translateX(4px);
  border-color: rgba(255, 255, 255, 0.06);
}
.nav-item.active {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.35), rgba(139, 92, 246, 0.35));
  color: #fff;
  font-weight: 600;
  border-color: rgba(147, 197, 253, 0.35);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.25);
}
.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex; flex-direction: column; gap: .5rem;
  font-size: .85rem;
}
.sidebar-footer a { color: rgba(203, 213, 225, 0.8); text-decoration: none; transition: color .2s; }
.sidebar-footer a:hover { color: #93c5fd; }
.sidebar-footer .btn-text { color: rgba(203, 213, 225, 0.7); }
.sidebar-footer .btn-text:hover { color: #fca5a5; text-decoration: none; }

.main { margin-left: var(--sidebar); flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(199, 210, 254, 0.5);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 10;
}
.topbar h2 {
  font-family: var(--display);
  font-size: 1.35rem;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.topbar-actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.content {
  padding: 1.5rem;
  flex: 1;
  animation: contentIn .35s var(--ease);
}
@keyframes contentIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* ─── Stat cards ─── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.stat-card {
  position: relative;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.15rem 1.2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;
}
.stat-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  border-radius: 14px 0 0 14px;
  background: var(--card-accent, var(--accent-solid));
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: #c7d2fe;
}
.stat-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
  background: var(--card-tint, var(--accent-soft));
}
.stat-body { min-width: 0; }
.stat-card .label { font-size: .78rem; color: var(--muted); margin-bottom: .2rem; font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.stat-card .value { font-family: var(--display); font-size: 1.65rem; font-weight: 700; line-height: 1.1; color: var(--text); }
.stat-card .value.accent { color: var(--accent-solid); }
.stat-card .value.success { color: var(--success); }
.stat-card .value.warning { color: var(--warning); }
.stat-card .value.violet { color: var(--violet-text); }

.stat-card--blue { --card-accent: #3b82f6; --card-tint: #dbeafe; }
.stat-card--violet { --card-accent: #8b5cf6; --card-tint: #ede9fe; }
.stat-card--amber { --card-accent: #f59e0b; --card-tint: #fef3c7; }
.stat-card--green { --card-accent: #22c55e; --card-tint: #dcfce7; }
.stat-card--rose { --card-accent: #f43f5e; --card-tint: #ffe4e6; }
.stat-card--cyan { --card-accent: #06b6d4; --card-tint: #cffafe; }
.stat-card--emerald { --card-accent: #10b981; --card-tint: #d1fae5; }
.stat-card--orange { --card-accent: #f97316; --card-tint: #ffedd5; }

/* ─── Panels ─── */
.panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 1.5rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s var(--ease);
}
.panel:hover { box-shadow: var(--shadow-md); }
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, rgba(219, 234, 254, 0.5), rgba(237, 233, 254, 0.35));
}
.panel-header h3 {
  font-size: 1rem; font-weight: 700; color: var(--text);
  display: flex; align-items: center; gap: .5rem;
}
.panel--alert .panel-header {
  background: linear-gradient(90deg, rgba(254, 226, 226, 0.7), rgba(254, 243, 199, 0.4));
}
.panel-body { padding: 1.25rem; }
.panel-body.no-pad { padding: 0; }

/* ─── Tables ─── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .875rem; }
th, td { padding: .8rem 1rem; text-align: left; border-bottom: 1px solid var(--border); }
th {
  color: var(--violet-text);
  font-weight: 700;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  background: linear-gradient(180deg, #f5f3ff, #eff6ff);
}
tbody tr {
  transition: background .18s var(--ease), transform .18s var(--ease);
}
tbody tr:hover td {
  background: linear-gradient(90deg, rgba(219, 234, 254, 0.45), rgba(237, 233, 254, 0.25));
}
tbody tr:hover td:first-child {
  box-shadow: inset 3px 0 0 var(--accent-solid);
}
td.actions { white-space: nowrap; }
td.actions button { margin-right: .25rem; }

/* ─── Badges ─── */
.badge {
  display: inline-block;
  padding: .25rem .6rem;
  border-radius: 999px;
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.badge-draft { background: #f1f5f9; color: #64748b; border: 1px solid #e2e8f0; }
.badge-sent { background: #dbeafe; color: #1d4ed8; border: 1px solid #93c5fd; }
.badge-paid { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.badge-overdue { background: #fee2e2; color: #b91c1c; border: 1px solid #fca5a5; }
.badge-cancelled { background: #f1f5f9; color: #94a3b8; }

.solution-pill {
  display: inline-block;
  padding: .2rem .55rem;
  border-radius: 6px;
  font-size: .78rem;
  font-weight: 600;
  background: var(--pill-bg, var(--accent-soft));
  color: var(--pill-text, var(--accent-hover));
  border: 1px solid var(--pill-border, #bfdbfe);
}
.pill-blue { --pill-bg: #dbeafe; --pill-text: #1d4ed8; --pill-border: #93c5fd; }
.pill-violet { --pill-bg: #ede9fe; --pill-text: #6d28d9; --pill-border: #c4b5fd; }
.pill-emerald { --pill-bg: #d1fae5; --pill-text: #047857; --pill-border: #6ee7b7; }
.pill-orange { --pill-bg: #ffedd5; --pill-text: #c2410c; --pill-border: #fdba74; }
.pill-cyan { --pill-bg: #cffafe; --pill-text: #0e7490; --pill-border: #67e8f9; }
.pill-slate { --pill-bg: #f1f5f9; --pill-text: #475569; --pill-border: #cbd5e1; }

.solution-card { flex-direction: column; align-items: stretch; }
.solution-card .stat-icon { margin-bottom: .25rem; }
.solution-card .value { font-size: 1.5rem !important; }

/* ─── Filters ─── */
.filters {
  display: flex; flex-wrap: wrap; gap: .75rem;
  margin-bottom: 1rem; align-items: flex-end;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid #c7d2fe;
  border-radius: 12px;
}
.filters label {
  display: flex; flex-direction: column; gap: .25rem;
  font-size: .75rem; color: var(--violet-text); font-weight: 600;
}
.filters input, .filters select {
  padding: .55rem .7rem;
  background: var(--bg2);
  border: 2px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: .875rem;
  min-width: 160px;
  transition: border-color .2s, box-shadow .2s;
}
.filters input:focus, .filters select:focus {
  outline: none;
  border-color: var(--accent-solid);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* ─── Forms ─── */
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: .35rem; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: .8rem; color: var(--violet-text); font-weight: 600; }
.form-group input, .form-group select, .form-group textarea {
  padding: .65rem .8rem;
  background: var(--bg2);
  border: 2px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: inherit;
  font-size: .9rem;
  transition: border-color .2s, box-shadow .2s;
}
.form-group textarea { min-height: 80px; resize: vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent-solid);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}
.form-actions { display: flex; gap: .75rem; margin-top: 1.25rem; flex-wrap: wrap; }
.form-hint { color: var(--muted); font-size: .875rem; }

.hub-intro {
  margin: 0 0 1.25rem;
  padding: 1rem 1.15rem;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(139, 92, 246, 0.1));
  border: 1px solid #c7d2fe;
  color: var(--text);
  font-size: .9rem;
  line-height: 1.55;
}

/* ─── Line items & totals ─── */
.lines-table input {
  width: 100%; padding: .45rem .5rem;
  background: var(--bg2);
  border: 2px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: .85rem;
}
.lines-table input:focus { outline: none; border-color: var(--accent-solid); }
.totals-box {
  max-width: 320px; margin-left: auto; margin-top: 1rem;
  background: linear-gradient(135deg, #eff6ff, #f5f3ff);
  border: 2px solid #c7d2fe;
  border-radius: 12px;
  padding: 1.1rem;
}
.totals-row { display: flex; justify-content: space-between; padding: .35rem 0; font-size: .9rem; color: var(--muted); }
.totals-row.total {
  font-size: 1.15rem; font-weight: 700; color: var(--text);
  border-top: 2px solid #c7d2fe;
  margin-top: .5rem; padding-top: .75rem;
}
.totals-row.total span:last-child {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Modal ─── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(30, 27, 75, 0.45);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
  animation: fadeIn .2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: var(--bg2);
  border: 1px solid #c7d2fe;
  border-radius: 18px;
  width: 100%; max-width: 720px;
  max-height: 90vh; overflow-y: auto;
  box-shadow: 0 24px 48px rgba(79, 70, 229, 0.2);
  animation: modalIn .28s var(--ease);
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96) translateY(12px); }
  to { opacity: 1; transform: none; }
}
.modal.lg { max-width: 960px; }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, #eff6ff, #f5f3ff);
  position: sticky; top: 0; z-index: 1;
}
.modal-header h3 {
  font-family: var(--display);
  font-size: 1.1rem;
  color: var(--violet-text);
}
.modal-close {
  background: #ede9fe; border: none;
  color: var(--violet-text);
  width: 32px; height: 32px;
  border-radius: 8px;
  font-size: 1.25rem;
  cursor: pointer;
  line-height: 1;
  transition: background .2s, transform .2s;
}
.modal-close:hover { background: #ddd6fe; transform: rotate(90deg); }
.modal-body { padding: 1.25rem; }

/* ─── Preview ─── */
.doc-preview {
  background: #fff;
  color: #1e293b;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  padding: 2rem;
  font-size: .85rem;
  line-height: 1.5;
}
.doc-preview .pv-title { font-size: 1.25rem; font-weight: 700; color: var(--accent-solid); }
.doc-preview th { background: #f5f3ff; color: var(--violet-text); }

/* ─── Toast ─── */
#toast-root {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  z-index: 200;
  display: flex; flex-direction: column; gap: .5rem;
}
.toast {
  padding: .85rem 1.1rem;
  border-radius: 10px;
  font-size: .875rem;
  font-weight: 500;
  background: var(--bg2);
  border: 2px solid var(--border);
  box-shadow: var(--shadow-md);
  animation: slideIn .35s var(--ease);
  color: var(--text);
}
.toast.success {
  border-color: #86efac;
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
  color: var(--success-text);
}
.toast.error {
  border-color: #fca5a5;
  background: linear-gradient(135deg, #fef2f2, #fee2e2);
  color: var(--danger-text);
}
@keyframes slideIn {
  from { transform: translateX(110%); opacity: 0; }
  to { transform: none; opacity: 1; }
}

.empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.6);
  border-radius: 14px;
  border: 2px dashed #c7d2fe;
}
.empty p { margin-bottom: 1rem; font-size: 1rem; }

.text-muted { color: var(--muted); font-size: .82rem; }
.solution-actions { margin-top: .85rem; display: flex; gap: .4rem; flex-wrap: wrap; }

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .main { margin-left: 0; }
  .form-grid { grid-template-columns: 1fr; }
}