/* ═══════════════════════════════════════════════════════
   PULSA KREDIT — Premium Dark Billing UI
   ═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg-base:      #0a0c10;
  --bg-card:      #12151c;
  --bg-card2:     #181c25;
  --bg-hover:     #1e2330;
  --border:       #252a36;
  --border-light: #2e3444;
  --accent:       #00e5a0;
  --accent-dim:   rgba(0,229,160,.12);
  --accent2:      #3b82f6;
  --accent2-dim:  rgba(59,130,246,.12);
  --danger:       #ff4d6d;
  --danger-dim:   rgba(255,77,109,.12);
  --warn:         #f59e0b;
  --warn-dim:     rgba(245,158,11,.12);
  --text-1:       #f0f2f7;
  --text-2:       #8b93a8;
  --text-3:       #4f5668;
  --radius:       14px;
  --radius-sm:    8px;
  --shadow:       0 4px 24px rgba(0,0,0,.45);
  --shadow-lg:    0 12px 48px rgba(0,0,0,.65);
  --font:         'Sora', sans-serif;
  --mono:         'JetBrains Mono', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-base);
  color: var(--text-1);
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse 800px 600px at 10% -10%, rgba(0,229,160,.05) 0%, transparent 60%),
    radial-gradient(ellipse 600px 400px at 90% 90%, rgba(59,130,246,.05) 0%, transparent 60%);
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }

/* ── TOPBAR ── */
.topbar {
  background: rgba(18,21,28,.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), #00b77e);
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 18px;
}
.brand-text {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-1);
  letter-spacing: -.3px;
}
.brand-text span { color: var(--accent); }
.topbar-nav { display: flex; gap: 8px; }
.nav-btn {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: all .2s;
}
.nav-btn-ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border);
}
.nav-btn-ghost:hover { background: var(--bg-hover); color: var(--text-1); }
.nav-btn-primary {
  background: var(--accent);
  color: #0a0c10;
  font-weight: 700;
}
.nav-btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }

/* ── CONTAINER ── */
.container { max-width: 1200px; margin: 0 auto; padding: 40px 24px; }

/* ── FLASH MESSAGE ── */
.flash {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  font-size: .9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn .3s ease;
}
.flash-success { background: var(--accent-dim); border: 1px solid rgba(0,229,160,.3); color: var(--accent); }
.flash-error   { background: var(--danger-dim); border: 1px solid rgba(255,77,109,.3); color: var(--danger); }

/* ── STATS ROW ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
  gap: 16px;
  margin-bottom: 40px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: border-color .2s, transform .2s;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
}
.stat-card.green::before  { background: linear-gradient(90deg, var(--accent), transparent); }
.stat-card.blue::before   { background: linear-gradient(90deg, var(--accent2), transparent); }
.stat-card.red::before    { background: linear-gradient(90deg, var(--danger), transparent); }
.stat-card.yellow::before { background: linear-gradient(90deg, var(--warn), transparent); }
.stat-card:hover { border-color: var(--border-light); transform: translateY(-2px); }
.stat-label { font-size: .78rem; color: var(--text-2); text-transform: uppercase; letter-spacing: 1px; font-weight: 600; margin-bottom: 10px; }
.stat-value { font-size: 1.8rem; font-weight: 800; color: var(--text-1); font-family: var(--mono); line-height: 1; }
.stat-value.green  { color: var(--accent); }
.stat-value.red    { color: var(--danger); }
.stat-sub { font-size: .8rem; color: var(--text-3); margin-top: 6px; }

/* ── SECTION HEADER ── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-1);
}
.section-sub { font-size: .8rem; color: var(--text-3); margin-top: 2px; }

/* ── DEBITUR LIST ── */
.debitur-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.debitur-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
  color: inherit;
  transition: all .2s;
  cursor: pointer;
}
.debitur-card:hover {
  border-color: var(--accent);
  background: var(--bg-card2);
  transform: translateX(4px);
  box-shadow: var(--shadow);
}
.debitur-avatar {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent-dim), var(--accent2-dim));
  border: 1px solid var(--border-light);
  display: grid;
  place-items: center;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}
.debitur-info { flex: 1; min-width: 0; }
.debitur-nama { font-weight: 700; font-size: 1rem; color: var(--text-1); }
.debitur-meta { font-size: .8rem; color: var(--text-2); margin-top: 2px; }
.debitur-amount {
  text-align: right;
  flex-shrink: 0;
}
.amount-label { font-size: .72rem; color: var(--text-3); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 3px; }
.amount-value {
  font-family: var(--mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--danger);
}
.amount-value.zero { color: var(--accent); }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: .72rem;
  font-weight: 600;
  margin-left: 8px;
}
.badge-warn   { background: var(--warn-dim); color: var(--warn); border: 1px solid rgba(245,158,11,.2); }
.badge-green  { background: var(--accent-dim); color: var(--accent); border: 1px solid rgba(0,229,160,.2); }
.badge-blue   { background: var(--accent2-dim); color: var(--accent2); border: 1px solid rgba(59,130,246,.2); }
.badge-red    { background: var(--danger-dim); color: var(--danger); border: 1px solid rgba(255,77,109,.2); }

/* ── EMPTY STATE ── */
.empty {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-3);
}
.empty-icon { font-size: 3rem; margin-bottom: 12px; opacity: .5; }
.empty-title { font-weight: 600; color: var(--text-2); margin-bottom: 6px; }

/* ── DETAIL PAGE ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-2);
  text-decoration: none;
  font-size: .9rem;
  margin-bottom: 24px;
  transition: color .2s;
}
.back-link:hover { color: var(--accent); }

.billing-header {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}
.billing-header::after {
  content: '⚡';
  position: absolute;
  right: 24px; top: 50%;
  transform: translateY(-50%);
  font-size: 5rem;
  opacity: .04;
}
.billing-name { font-size: 1.6rem; font-weight: 800; color: var(--text-1); }
.billing-phone { font-size: .9rem; color: var(--text-2); margin-top: 4px; }
.billing-stats {
  display: flex;
  gap: 32px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.billing-stat { }
.billing-stat-val {
  font-family: var(--mono);
  font-size: 1.4rem;
  font-weight: 700;
}
.billing-stat-val.danger { color: var(--danger); }
.billing-stat-val.green  { color: var(--accent); }
.billing-stat-lbl { font-size: .75rem; color: var(--text-3); margin-top: 2px; text-transform: uppercase; letter-spacing: .8px; }
.divider { width: 1px; background: var(--border); }

/* ── INVOICE TABLE ── */
.invoice-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
}
.invoice-top {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.invoice-title { font-weight: 700; font-size: 1rem; }

table.invoice-table {
  width: 100%;
  border-collapse: collapse;
}
table.invoice-table thead th {
  padding: 12px 24px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1px;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border);
  text-align: left;
}
table.invoice-table thead th.right { text-align: right; }
table.invoice-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background .15s;
}
table.invoice-table tbody tr:last-child { border-bottom: none; }
table.invoice-table tbody tr:hover { background: var(--bg-hover); }
table.invoice-table tbody td {
  padding: 16px 24px;
  font-size: .9rem;
  color: var(--text-1);
  vertical-align: middle;
}
table.invoice-table tbody td.right { text-align: right; }
table.invoice-table tbody td.mono {
  font-family: var(--mono);
  font-size: .88rem;
}
.row-no {
  width: 32px; height: 32px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-3);
}
.keterangan-text { color: var(--text-1); font-weight: 500; }
.keterangan-sub  { font-size: .78rem; color: var(--text-3); margin-top: 2px; }
.nominal-val {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--text-1);
}
.nominal-val.lunas { color: var(--accent); text-decoration: line-through; opacity: .6; }
.action-group { display: flex; gap: 6px; justify-content: flex-end; }

/* ── INVOICE FOOTER / TOTAL ── */
.invoice-footer {
  background: var(--bg-base);
  border-top: 1px solid var(--border);
  padding: 20px 24px;
}
.total-row {
  display: flex;
  justify-content: flex-end;
  gap: 40px;
  align-items: center;
  flex-wrap: wrap;
}
.total-label { font-size: .85rem; color: var(--text-2); }
.total-val {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--danger);
  min-width: 200px;
  text-align: right;
}
.total-val.zero { color: var(--accent); }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all .18s;
  white-space: nowrap;
}
.btn-sm { padding: 5px 10px; font-size: .78rem; }
.btn-lg { padding: 12px 24px; font-size: .95rem; }
.btn-primary  { background: var(--accent); color: #0a0c10; }
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,229,160,.25); }
.btn-blue     { background: var(--accent2-dim); color: var(--accent2); border: 1px solid rgba(59,130,246,.25); }
.btn-blue:hover { background: var(--accent2); color: #fff; }
.btn-danger   { background: var(--danger-dim); color: var(--danger); border: 1px solid rgba(255,77,109,.25); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-success  { background: var(--accent-dim); color: var(--accent); border: 1px solid rgba(0,229,160,.25); }
.btn-success:hover { background: var(--accent); color: #0a0c10; }
.btn-ghost    { background: transparent; color: var(--text-2); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-1); }

/* ── FORM ── */
.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 560px;
}
.form-title { font-size: 1.3rem; font-weight: 800; margin-bottom: 6px; }
.form-sub   { font-size: .85rem; color: var(--text-2); margin-bottom: 28px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
.form-label {
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .8px;
}
.form-input, .form-select, .form-textarea {
  background: var(--bg-base);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-1);
  font-family: var(--font);
  font-size: .9rem;
  padding: 11px 14px;
  transition: border-color .2s, box-shadow .2s;
  width: 100%;
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-input::placeholder { color: var(--text-3); }
.form-select option { background: var(--bg-card2); }
.form-input-prefix {
  position: relative;
}
.form-input-prefix .prefix {
  position: absolute;
  left: 12px; top: 50%; transform: translateY(-50%);
  color: var(--text-3);
  font-family: var(--mono);
  font-size: .85rem;
  pointer-events: none;
}
.form-input-prefix input { padding-left: 40px; }
.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}
.datalist-input { position: relative; }

/* ── CONFIRM DIALOG ── */
.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  backdrop-filter: blur(4px);
  z-index: 200;
  place-items: center;
}
.overlay.show { display: grid; }
.dialog {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 28px;
  max-width: 360px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  animation: popIn .2s ease;
}
.dialog-icon { font-size: 2rem; margin-bottom: 12px; }
.dialog-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 6px; }
.dialog-sub { font-size: .85rem; color: var(--text-2); margin-bottom: 20px; }
.dialog-actions { display: flex; gap: 8px; }

/* ── PRINT BILL ── */
.print-bill-wrap { display: none; }

/* ── ANIMATIONS ── */
@keyframes slideIn { from { opacity:0; transform: translateY(-8px); } to { opacity:1; transform: translateY(0); } }
@keyframes popIn   { from { opacity:0; transform: scale(.92); } to { opacity:1; transform: scale(1); } }
@keyframes fadeUp  { from { opacity:0; transform: translateY(12px); } to { opacity:1; transform: translateY(0); } }

.fade-up { animation: fadeUp .35s ease both; }
.fade-up:nth-child(1) { animation-delay: .05s; }
.fade-up:nth-child(2) { animation-delay: .1s; }
.fade-up:nth-child(3) { animation-delay: .15s; }
.fade-up:nth-child(4) { animation-delay: .2s; }

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  .topbar { padding: 0 16px; }
  .container { padding: 24px 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .billing-stats { gap: 20px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .total-row { gap: 16px; }
  .total-val { font-size: 1.2rem; }
  table.invoice-table thead th,
  table.invoice-table tbody td { padding: 10px 14px; }
  .action-group { flex-direction: column; }
}

/* ── PRINT ── */
@media print {
  body { background: white; color: black; }
  .topbar, .nav-btn, .btn, .back-link, .action-group, .section-header .btn { display: none !important; }
}