/* =========================================================================
   Приём счетов — современная тема
   ========================================================================= */
:root {
  --brand: #1f4e78;
  --brand-dark: #153a5a;
  --brand-light: #2c6ba0;
  --accent: #f0a12e;
  --accent-dark: #e08e1a;

  --bg: #f2f5f9;
  --card: #ffffff;
  --text: #1e2a36;
  --muted: #64748b;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --ok: #16a34a;
  --ok-bg: #dcfce7;
  --warn: #d97706;
  --warn-bg: #fef3c7;

  --radius: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow: 0 4px 16px rgba(15, 23, 42, .08);
  --shadow-lg: 0 10px 30px rgba(15, 23, 42, .12);
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 20px;
}

/* =========================================================================
   Header
   ========================================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(135deg, var(--brand-dark) 0%, var(--brand) 60%, var(--brand-light) 100%);
  color: #fff;
  box-shadow: 0 2px 12px rgba(15, 23, 42, .25);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: .2px;
  text-decoration: none;
}
.brand:hover { opacity: .95; }
.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(240, 161, 46, .45);
}
.brand-logo svg { width: 20px; height: 20px; }

.header-nav { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.header-nav a {
  color: rgba(255, 255, 255, .88);
  text-decoration: none;
  font-size: .92rem;
  font-weight: 500;
  padding: 7px 13px;
  border-radius: 8px;
  transition: background .15s, color .15s;
}
.header-nav a:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.header-nav .nav-btn {
  background: var(--accent);
  color: #3b2a0c;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(240, 161, 46, .4);
}
.header-nav .nav-btn:hover { background: #f6b14a; color: #3b2a0c; }

/* =========================================================================
   Main / footer
   ========================================================================= */
main { flex: 1; padding: 28px 0 56px; }
.site-footer {
  border-top: 1px solid var(--border);
  padding: 18px 0;
  color: var(--muted);
  font-size: .85rem;
  text-align: center;
  background: var(--card);
}
.site-footer p { margin: 0; }

/* =========================================================================
   Typography
   ========================================================================= */
h1 { margin: 0 0 14px; font-size: 1.65rem; font-weight: 700; letter-spacing: -.2px; }
h2 { font-size: 1.2rem; font-weight: 700; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

/* Hero */
.hero { text-align: center; margin: 8px 0 28px; }
.hero h1 { font-size: 2rem; margin-bottom: 8px; }
.hero p { margin: 0 auto; max-width: 560px; color: var(--muted); font-size: 1.05rem; }

/* =========================================================================
   Cards
   ========================================================================= */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.login-card { max-width: 430px; margin: 36px auto; box-shadow: var(--shadow); }
.success-card { max-width: 580px; margin: 36px auto; text-align: center; box-shadow: var(--shadow); }
.welcome-card { max-width: 720px; margin: 0 auto; box-shadow: var(--shadow); }
.form-card { box-shadow: var(--shadow-sm); }

.success-icon {
  width: 72px; height: 72px; margin: 0 auto 16px;
  background: var(--ok); color: #fff; font-size: 2.2rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  box-shadow: 0 6px 18px rgba(22, 163, 74, .35);
}

/* =========================================================================
   Forms
   ========================================================================= */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field-wide { grid-column: 1 / -1; }
.field label { font-size: .86rem; font-weight: 600; color: #334155; }
.field input, .field select {
  padding: 11px 13px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}
.field input::placeholder { color: #94a3b8; }
.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--brand-light);
  box-shadow: 0 0 0 3px rgba(44, 107, 160, .18);
}
.field input[type="file"] { padding: 9px; }
.hint { color: var(--muted); font-size: .78rem; }
.hp-field { position: absolute; left: -9999px; }

/* =========================================================================
   Buttons
   ========================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text);
  font-size: .92rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  transition: background .15s, border-color .15s, box-shadow .15s, transform .1s;
}
.btn:hover { background: #f1f5f9; border-color: var(--border-strong); }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
  box-shadow: 0 2px 8px rgba(31, 78, 120, .35);
}
.btn-primary:hover { background: var(--brand-dark); border-color: var(--brand-dark); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; border-color: #b91c1c; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--brand); }
.btn-ghost:hover { background: rgba(31, 78, 120, .08); }
.btn-small { padding: 6px 12px; font-size: .8rem; }

form .btn { margin-top: 18px; }

/* =========================================================================
   Flash messages
   ========================================================================= */
.flash-area { margin-bottom: 18px; }
.flash {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  font-size: .92rem;
  border: 1px solid;
  animation: slide-in .25s ease;
}
.flash::before {
  content: "";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  line-height: 1;
}
.flash-ok {
  background: var(--ok-bg);
  color: #14532d;
  border-color: #bbf7d0;
}
.flash-ok::before { background: var(--ok); content: "✓"; color: #fff; }
.flash-error {
  background: var(--danger-bg);
  color: #7f1d1d;
  border-color: #fecaca;
}
.flash-error::before { background: var(--danger); content: "!"; color: #fff; }

@keyframes slide-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* =========================================================================
   Summary (success page)
   ========================================================================= */
.summary {
  text-align: left;
  margin: 22px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 18px;
  background: #f8fafc;
}
.summary dt { float: left; clear: left; font-weight: 600; color: var(--muted); width: 210px; padding: 7px 0; }
.summary dd { margin: 0 0 0 210px; padding: 7px 0; font-weight: 500; }

/* =========================================================================
   Filters
   ========================================================================= */
.filters {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
  flex-wrap: wrap;
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.filters input[type="search"] { flex: 1; min-width: 220px; }
.filters input, .filters select {
  padding: 9px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: .92rem;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}
.filters input:focus, .filters select:focus {
  outline: none;
  border-color: var(--brand-light);
  box-shadow: 0 0 0 3px rgba(44, 107, 160, .15);
}
.filters .btn { margin-top: 0; }

/* =========================================================================
   Stats
   ========================================================================= */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .15s, transform .15s;
}
.stat:hover { box-shadow: var(--shadow); transform: translateY(-1px); }
.stat-label {
  color: var(--muted);
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .4px;
}
.stat-value { font-size: 1.45rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-accent {
  border-color: var(--accent);
  background: linear-gradient(135deg, #fffaf0, #fff);
}
.stat-accent .stat-value { color: var(--brand); }

/* =========================================================================
   Table
   ========================================================================= */
.table-wrap {
  overflow-x: auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  max-height: 70vh;
  overflow-y: auto;
}
.data-table { width: 100%; border-collapse: collapse; font-size: .88rem; min-width: 980px; }
.data-table th, .data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.data-table td.nowrap, .data-table th.nowrap { white-space: nowrap; }
.data-table td.cell-num-invoice { font-weight: 700; color: var(--brand); }
.data-table th.col-goods, .data-table td.col-goods { min-width: 320px; }
.data-table .num { white-space: nowrap; }
.data-table th {
  background: #f1f5f9;
  color: #475569;
  font-size: .76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .4px;
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 1;
  box-shadow: 0 1px 0 var(--border);
}
.data-table tbody tr { transition: background .12s; }
.data-table tbody tr:nth-child(even) { background: #fafbfd; }
.data-table tbody tr:hover { background: #eef4fb; }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table .empty { text-align: center; color: var(--muted); padding: 40px 24px; }

/* Список позиций товаров/услуг */
.items-list { margin: 0; padding: 0; list-style: none; }
.items-list li {
  padding-left: 16px;
  position: relative;
  margin-bottom: 5px;
  line-height: 1.4;
}
.items-list li:last-child { margin-bottom: 0; }
.items-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-light);
}
.detail dd .items-list li { margin-bottom: 7px; }

/* =========================================================================
   Actions / status form
   ========================================================================= */
.actions { display: flex; gap: 6px; align-items: center; }
.actions form { margin: 0; }
.actions form .btn { margin-top: 0; }
.status-form { margin: 0; }
.status-form select {
  padding: 6px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  font-size: .85rem;
  font-family: inherit;
  background: #fff;
}
.status-form select:focus { outline: none; border-color: var(--brand-light); box-shadow: 0 0 0 3px rgba(44, 107, 160, .15); }
.status-form .btn { margin-top: 0; }

/* =========================================================================
   Detail page
   ========================================================================= */
.detail-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.detail-head h1 { margin: 0; }
.detail {
  margin: 18px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 18px;
  background: #f8fafc;
}
.detail dt { float: left; clear: left; font-weight: 600; color: var(--muted); width: 200px; padding: 7px 0; }
.detail dd { margin: 0 0 0 200px; padding: 7px 0; }
.detail-actions { display: flex; gap: 10px; align-items: center; }
.detail-actions form { margin: 0; }
.detail-actions form .btn { margin-top: 0; }

/* =========================================================================
   Welcome / steps
   ========================================================================= */
.welcome-card h2 { margin-top: 0; }
.steps {
  padding-left: 0;
  list-style: none;
  counter-reset: step;
  margin: 18px 0;
}
.steps li {
  position: relative;
  padding-left: 44px;
  margin-bottom: 14px;
  counter-increment: step;
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .95rem;
}
.welcome-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 20px; }

/* =========================================================================
   Badges (statuses)
   ========================================================================= */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: .2px;
}
.badge-new { background: #e0ecf7; color: var(--brand); }
.badge-process { background: var(--warn-bg); color: #92400e; }
.badge-paid { background: var(--ok-bg); color: #14532d; }
.badge-excl { background: #eef1f4; color: var(--muted); }

/* Actions card in cabinet */
.actions-card { margin-top: 20px; }
.actions-card .btn { margin-top: 0; }

/* =========================================================================
   Pagination
   ========================================================================= */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}
.pagination-info { color: var(--muted); font-size: .85rem; }
.pagination-controls { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.pagination-controls .btn { margin-top: 0; }
.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  text-decoration: none;
  font-size: .85rem;
  font-weight: 500;
  transition: background .12s, border-color .12s;
}
.page-link:hover { background: #f1f5f9; }
.page-current {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  font-size: .85rem;
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(31, 78, 120, .35);
}
.page-dots { color: var(--muted); padding: 0 2px; }

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 720px) {
  .form-grid { grid-template-columns: 1fr; }
  .summary dt, .detail dt { float: none; width: auto; }
  .summary dd, .detail dd { margin-left: 0; }
  .hero h1 { font-size: 1.6rem; }
  h1 { font-size: 1.4rem; }
  .header-inner { padding: 12px 16px; }
  .card { padding: 20px; }
}