/* ISP Billing Manager — "Sea Green" theme
   Clean white surfaces, sea-green brand, neutral slate text. */

:root {
  --bg: #F4F7F5;
  --card: #FFFFFF;
  --card-alt: #F7FAF8;
  --row-hover: #F0F8F3;
  --input: #FFFFFF;
  --sidebar: #FFFFFF;
  --sidebar-text: #334155;
  --sidebar-dim: #94A3B8;
  --sidebar-hover: #F1F7F3;
  --text: #0F172A;
  --text-2: #475569;
  --muted: #64748B;
  --border: #E4EAE6;
  --border-2: #CFD8D3;
  --accent: #2E8B57;          /* sea green */
  --accent-hover: #256F46;
  --accent-soft: #E6F4EC;
  --accent-ink: #1E6B42;      /* green text on soft green */
  --brand-2: #3CB371;         /* medium sea green (gradients) */
  --success: #2E8B57;
  --success-soft: #E6F4EC;
  --danger: #DC2626;
  --danger-soft: #FEECEC;
  --warning: #C2750C;
  --warning-soft: #FDF3E1;
  --info: #0E7490;
  --info-soft: #E3F4F8;
  --whatsapp: #25D366;
  --shadow: 0 1px 2px rgba(16, 24, 20, .04), 0 1px 3px rgba(16, 24, 20, .06);
  --shadow-md: 0 4px 12px -2px rgba(16, 24, 20, .08);
  --shadow-lg: 0 24px 48px -12px rgba(16, 24, 20, .28);
  --radius: 12px;
  --font: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, monospace;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #0B1310;
  --card: #111C17;
  --card-alt: #15221C;
  --row-hover: #182A21;
  --input: #15221C;
  --sidebar: #0E1814;
  --sidebar-text: #CBD5D0;
  --sidebar-dim: #6B7F75;
  --sidebar-hover: #16241D;
  --text: #ECF3EF;
  --text-2: #B6C4BD;
  --muted: #8A9B93;
  --border: #1F3029;
  --border-2: #2B4137;
  --accent: #3CB371;
  --accent-hover: #52C585;
  --accent-soft: #143324;
  --accent-ink: #7FD8A4;
  --brand-2: #2E8B57;
  --success: #3CB371;
  --success-soft: #143324;
  --danger: #F26464;
  --danger-soft: #3A1414;
  --warning: #E9A23B;
  --warning-soft: #3A2A10;
  --info: #38B2CF;
  --info-soft: #0E2E36;
  --shadow: 0 1px 2px rgba(0, 0, 0, .35);
  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, .4);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 var(--font);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }
.num { font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); font-size: 13px; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 36px; padding: 0 14px;
  border: 1px solid var(--border-2); border-radius: 8px;
  background: var(--card); color: var(--text);
  font-weight: 600; cursor: pointer; white-space: nowrap;
  transition: background .15s, border-color .15s;
}
.btn:hover { background: var(--card-alt); border-color: var(--muted); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; box-shadow: 0 1px 2px rgba(46, 139, 87, .3); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(.92); background: var(--danger); }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-ghost:hover { background: var(--card-alt); border-color: transparent; }
.btn-sm { height: 30px; padding: 0 10px; font-size: 13px; }
.btn-icon { width: 36px; padding: 0; }

/* ── Forms ───────────────────────────────────────────────── */
.field { display: flex; flex-direction: column; gap: 5px; }
.field > span { font-size: 12px; font-weight: 600; color: var(--text-2); }
.input, select.input, textarea.input {
  height: 38px; width: 100%;
  padding: 0 12px;
  background: var(--input); border: 1px solid var(--border-2); border-radius: 8px;
  outline: none; transition: border-color .15s, box-shadow .15s;
}
textarea.input { height: auto; min-height: 76px; padding: 8px 12px; resize: vertical; }
.input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.form-grid .span-2 { grid-column: 1 / -1; }
@media (max-width: 560px) { .form-grid { grid-template-columns: 1fr; } }

/* ── Cards / layout pieces ───────────────────────────────── */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.card-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.card-head h3 { margin: 0; font-size: 15px; }
.card-body { padding: 18px; }

.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 999px;
  font-size: 12px; font-weight: 600; line-height: 18px;
  background: var(--card-alt); color: var(--text-2);
}
.badge.ok { background: var(--success-soft); color: var(--accent-ink); }
.badge.bad { background: var(--danger-soft); color: var(--danger); }
.badge.warn { background: var(--warning-soft); color: var(--warning); }
.badge.info { background: var(--info-soft); color: var(--info); }

/* ── Tables ──────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; }
.table th {
  position: sticky; top: 0;
  padding: 11px 14px; text-align: left;
  background: var(--card-alt); color: var(--muted);
  font-size: 11.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em;
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
.table th.sortable { cursor: pointer; user-select: none; }
.table th.sortable:hover { color: var(--text); }
.table td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tbody tr:hover { background: var(--row-hover); }
.table tbody tr.clickable { cursor: pointer; }
.table .right { text-align: right; white-space: nowrap; }
.table .actions { text-align: right; white-space: nowrap; }
.empty { padding: 48px 16px; text-align: center; color: var(--muted); }

/* ── Toasts ──────────────────────────────────────────────── */
#toasts {
  position: fixed; z-index: 100;
  right: 16px; bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  display: flex; flex-direction: column; gap: 8px;
}
.toast {
  min-width: 240px; max-width: 380px;
  padding: 12px 16px; border-radius: 8px;
  background: #0F1F17; color: #fff; box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--brand-2);
  animation: toast-in .2s ease-out;
}
.toast.error { border-left-color: var(--danger); }
@keyframes toast-in { from { transform: translateY(8px); opacity: 0; } }

/* ── Modal ───────────────────────────────────────────────── */
.modal-back {
  position: fixed; inset: 0; z-index: 50;
  display: grid; place-items: center; padding: 16px;
  background: rgba(2, 6, 23, .55);
}
.modal {
  width: min(640px, 100%); max-height: calc(100vh - 32px);
  display: flex; flex-direction: column;
  background: var(--card); border-radius: 12px; box-shadow: var(--shadow-lg);
}
.modal.wide { width: min(880px, 100%); }
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.modal-head h2 { margin: 0; font-size: 17px; }
.modal-body { padding: 20px; overflow-y: auto; }
.modal-foot {
  display: flex; justify-content: flex-end; gap: 8px;
  padding: 14px 20px; border-top: 1px solid var(--border);
}

.spinner {
  width: 22px; height: 22px; margin: 40px auto;
  border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Two-step login ──────────────────────────────────────────────────────── */
.twofa-qr { width: 220px; margin: 8px auto; padding: 10px; background: #fff; border-radius: 12px; }
.twofa-qr svg { display: block; width: 100%; height: auto; }
.twofa-steps { margin: 0 0 8px; padding-left: 20px; line-height: 1.7; }
.twofa-code { font-size: 1.4rem; letter-spacing: .35em; text-align: center; }
.twofa-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--line, rgba(127,127,127,.2)); }
.twofa-row:last-child { border-bottom: 0; }
.twofa-btns { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
@media (max-width: 560px) { .twofa-row { flex-direction: column; align-items: stretch; } }
.twofa-key { display: flex; gap: 8px; align-items: center; justify-content: center; flex-wrap: wrap; margin: 6px 0 2px; }
.twofa-key code { font-size: 1rem; letter-spacing: .06em; word-break: break-all; user-select: all; }