/* assets/css/style.css */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ─── VARIABLES ─────────────────────────────────── */
:root {
  --ink:        #0f1117;
  --ink-light:  #4a4f5e;
  --ink-faint:  #8891a4;
  --border:     #d8dde8;
  --border-lt:  #edf0f5;
  --surface:    #f7f8fb;
  --white:      #ffffff;
  --accent:     #1a56db;
  --accent-dk:  #1040b0;
  --accent-lt:  #e8effe;
  --success:    #0d7c4a;
  --danger:     #c0392b;
  --warn:       #d97706;

  --font-sans:  'IBM Plex Sans', sans-serif;
  --font-mono:  'IBM Plex Mono', monospace;

  --radius:     6px;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,.10), 0 2px 4px rgba(0,0,0,.05);
  --shadow-lg:  0 10px 30px rgba(0,0,0,.12), 0 4px 8px rgba(0,0,0,.06);
}

/* ─── RESET / BASE ───────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--surface);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dk); }

/* ─── LAYOUT ─────────────────────────────────────── */
.app-shell {
  display: flex;
  min-height: 100vh;
}
.sidebar {
  width: 230px;
  background: var(--ink);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
}
.sidebar-brand {
  padding: 24px 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar-brand h1 {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #fff;
  line-height: 1.3;
}
.sidebar-brand small {
  font-size: .68rem;
  color: rgba(255,255,255,.4);
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
}
.sidebar nav { padding: 16px 12px; flex: 1; }
.nav-label {
  font-size: .64rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.3);
  padding: 8px 8px 4px;
  margin-top: 8px;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius);
  color: rgba(255,255,255,.65);
  font-size: .88rem;
  font-weight: 400;
  transition: background .15s, color .15s;
  margin-bottom: 2px;
}
.nav-link svg { opacity: .7; flex-shrink: 0; }
.nav-link:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav-link.active { background: var(--accent); color: #fff; }
.nav-link.active svg { opacity: 1; }
.sidebar-footer {
  padding: 16px 12px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.logout-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius);
  color: rgba(255,255,255,.5);
  font-size: .88rem;
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  transition: background .15s, color .15s;
}
.logout-btn:hover { background: rgba(220,38,38,.15); color: #f87171; }

.main-content {
  margin-left: 230px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.topbar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
}
.topbar-meta {
  font-size: .8rem;
  color: var(--ink-faint);
  font-family: var(--font-mono);
}
.page-body { padding: 28px 32px; flex: 1; max-width: 1200px; }

/* ─── CARDS ──────────────────────────────────────── */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.card-header {
  padding: 18px 24px 16px;
  border-bottom: 1px solid var(--border-lt);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: .01em;
}
.card-subtitle {
  font-size: .75rem;
  color: var(--ink-faint);
  margin-top: 2px;
}
.card-body { padding: 24px; }

/* ─── DASHBOARD STATS ────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
.stat-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
}
.stat-label {
  font-size: .73rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.stat-value {
  font-size: 1.7rem;
  font-weight: 300;
  color: var(--ink);
  font-family: var(--font-mono);
  letter-spacing: -.02em;
}
.stat-value.accent { color: var(--accent); }

/* ─── FORMS ──────────────────────────────────────── */
.form-section {
  margin-bottom: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.form-section-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-light);
}
.form-section-body { padding: 20px; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.form-grid-3 { grid-template-columns: repeat(3, 1fr); }
.form-grid-2 { grid-template-columns: repeat(2, 1fr); }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group.full { grid-column: 1 / -1; }
label {
  font-size: .78rem;
  font-weight: 500;
  color: var(--ink-light);
  letter-spacing: .02em;
}
label .req { color: var(--danger); margin-left: 2px; }
input[type="text"],
input[type="number"],
input[type="date"],
input[type="email"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: 8px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: .88rem;
  color: var(--ink);
  background: var(--white);
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(26,86,219,.12);
}
input[readonly] { background: var(--surface); color: var(--ink-light); }
textarea { resize: vertical; min-height: 72px; }
.form-hint {
  font-size: .72rem;
  color: var(--ink-faint);
  margin-top: 2px;
}

/* ─── BUTTONS ────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  font-family: var(--font-sans);
  font-size: .85rem;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all .15s;
  text-decoration: none;
  line-height: 1;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-dk); border-color: var(--accent-dk); color: #fff; }
.btn-outline {
  background: var(--white);
  color: var(--ink);
  border-color: var(--border);
}
.btn-outline:hover { background: var(--surface); border-color: #b0b8c9; }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #a93226; }
.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-sm { padding: 5px 11px; font-size: .8rem; }
.btn-lg { padding: 11px 22px; font-size: .95rem; }
.btn-icon { padding: 7px; border-radius: var(--radius); }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

/* ─── ITEMS TABLE ────────────────────────────────── */
.items-table-wrapper { overflow-x: auto; }
.items-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .85rem;
}
.items-table th {
  background: var(--surface);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding: 9px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.items-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-lt);
  vertical-align: middle;
}
.items-table tr:last-child td { border-bottom: none; }
.items-table input {
  padding: 6px 8px;
  font-size: .85rem;
  border: 1px solid var(--border-lt);
  background: var(--surface);
}
.items-table input:focus { border-color: var(--accent); background: var(--white); }
.item-amount {
  font-family: var(--font-mono);
  font-size: .83rem;
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
}
.remove-row-btn {
  background: none;
  border: none;
  color: var(--ink-faint);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: color .15s, background .15s;
  display: flex;
  align-items: center;
}
.remove-row-btn:hover { color: var(--danger); background: #fde8e6; }
.sno-cell { color: var(--ink-faint); font-family: var(--font-mono); font-size: .78rem; }

/* ─── TAX SECTION ────────────────────────────────── */
.totals-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  align-items: start;
}
.tax-inputs { display: flex; gap: 12px; }
.tax-inputs .form-group { flex: 1; }
.totals-box {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.totals-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 14px;
  border-bottom: 1px solid var(--border-lt);
  font-size: .87rem;
}
.totals-row:last-child { border-bottom: none; }
.totals-row.grand {
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  font-size: .95rem;
}
.totals-label { color: var(--ink-light); }
.totals-row.grand .totals-label { color: rgba(255,255,255,.7); }
.totals-amount {
  font-family: var(--font-mono);
  font-weight: 500;
}

/* ─── TABLES (history) ───────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; font-size: .87rem; }
.data-table thead th {
  background: var(--surface);
  border-bottom: 2px solid var(--border);
  padding: 10px 14px;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  text-align: left;
}
.data-table tbody tr { border-bottom: 1px solid var(--border-lt); }
.data-table tbody tr:hover { background: var(--surface); }
.data-table tbody td { padding: 11px 14px; color: var(--ink); vertical-align: middle; }
.data-table tfoot td {
  padding: 10px 14px;
  border-top: 2px solid var(--border);
  font-size: .8rem;
  color: var(--ink-faint);
}
.badge {
  display: inline-flex;
  padding: 3px 9px;
  border-radius: 100px;
  font-size: .72rem;
  font-weight: 600;
}
.badge-blue { background: var(--accent-lt); color: var(--accent); }
.mono { font-family: var(--font-mono); }

/* ─── ALERTS ─────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: .87rem;
  margin-bottom: 20px;
  border-left: 3px solid;
}
.alert-success { background: #ecfdf5; border-color: var(--success); color: #065f46; }
.alert-error   { background: #fef2f2; border-color: var(--danger);  color: #7f1d1d; }

/* ─── LOGIN PAGE ─────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  padding: 20px;
}
.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 40px 36px;
}
.login-logo {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 28px;
}
.login-logo span {
  display: inline-block;
  width: 28px; height: 28px;
  background: var(--accent);
  border-radius: 5px;
  margin-right: 8px;
  vertical-align: middle;
}
.login-title { font-size: 1.3rem; font-weight: 600; margin-bottom: 4px; }
.login-sub { font-size: .83rem; color: var(--ink-faint); margin-bottom: 28px; }

/* ─── PRINT ──────────────────────────────────────── */
@media print {
  .no-print { display: none !important; }
  body { background: white !important; }
  .main-content { margin: 0 !important; }
  .topbar { display: none !important; }
  .sidebar { display: none !important; }
  .page-body { padding: 0 !important; max-width: 100% !important; }
}


@page {
    margin: 25px 30px;
}