/* ============================================================
   SIM Card Manager — mobile-first "signal console" UI
   Dark slate base · green signal accent · monospace codes
   ============================================================ */

:root {
  --bg: #0b1220;
  --bg-2: #0f172a;
  --panel: #1e293b;
  --panel-2: #273549;
  --line: #334155;
  --line-soft: #2a3a52;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --brand: #22c55e;
  --brand-dark: #16a34a;
  --brand-soft: rgba(34, 197, 94, 0.14);
  --accent: #38bdf8;
  --danger: #ef4444;
  --warn: #f59e0b;
  --radius: 12px;
  --radius-sm: 8px;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.55);
  --tap: 44px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Ambient signal glow */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 50% -12%, rgba(34, 197, 94, 0.10), transparent 60%),
    radial-gradient(620px 420px at 100% 0%, rgba(56, 189, 248, 0.06), transparent 55%);
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

h1 { font-size: 1.45rem; margin: 0; color: #fff; letter-spacing: -0.01em; }
h2 { font-size: 1.1rem; color: #fff; margin: 0; letter-spacing: -0.01em; }

/* ----------------------------- Top bar ----------------------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  background: rgba(15, 23, 42, 0.82);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar .brand { font-weight: 800; font-size: 1.05rem; color: #fff; letter-spacing: -0.02em; white-space: nowrap; }

/* Hamburger — only meaningful with JS, only on small screens */
.nav-toggle {
  display: none;
  width: var(--tap);
  height: var(--tap);
  margin: -0.25rem 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--panel-2);
  cursor: pointer;
  position: relative;
  flex: none;
}
.nav-toggle span {
  position: absolute;
  left: 11px; right: 11px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.22s ease, opacity 0.22s ease;
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.site-nav { display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; }
.site-nav nav { display: flex; gap: 1.1rem; align-items: center; flex-wrap: wrap; }
.site-nav nav a { color: var(--muted); font-weight: 600; padding: 0.3rem 0; }
.site-nav nav a:hover, .site-nav nav a.active { color: #fff; text-decoration: none; }
.site-nav .user { display: flex; align-items: center; gap: 0.6rem; color: var(--muted); font-size: 0.9rem; }

.badge {
  display: inline-block; padding: 0.12rem 0.55rem; border-radius: 999px;
  font-size: 0.66rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em;
}
.badge.admin { background: rgba(245, 158, 11, 0.18); color: var(--warn); }
.badge.technician { background: var(--brand-soft); color: var(--brand); }

/* JS-enhanced collapsible nav (mobile-first) */
html.js .nav-toggle { display: inline-block; }
html.js .site-nav {
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  flex-direction: column;
  align-items: stretch;
  gap: 0.25rem;
  padding: 0.6rem 1rem 0.9rem;
  background: rgba(15, 23, 42, 0.97);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
  transform-origin: top;
  display: none;
}
html.js .site-nav.open { display: flex; animation: dropIn 0.18s ease; }
html.js .site-nav nav { flex-direction: column; align-items: stretch; gap: 0; }
html.js .site-nav nav a { padding: 0.7rem 0.4rem; border-bottom: 1px solid var(--line-soft); }
html.js .site-nav .user { padding-top: 0.7rem; justify-content: space-between; }

@keyframes dropIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

/* Restore inline nav on wider screens */
@media (min-width: 768px) {
  html.js .nav-toggle { display: none; }
  html.js .site-nav {
    position: static; display: flex; flex-direction: row; align-items: center;
    gap: 1.25rem; padding: 0; background: none; border: 0; box-shadow: none;
  }
  html.js .site-nav nav { flex-direction: row; gap: 1.1rem; }
  html.js .site-nav nav a { padding: 0.3rem 0; border: 0; }
  html.js .site-nav .user { padding-top: 0; }
}

/* ----------------------------- Layout ----------------------------- */

.container { max-width: 1040px; margin: 0 auto; padding: 1.1rem 1rem 3rem; }

.page-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 0.75rem; margin-bottom: 1.1rem; flex-wrap: wrap;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem;
  margin-bottom: 1.1rem;
}

/* Stats */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0.8rem; margin-bottom: 1.25rem; }
.stat {
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem;
}
.stat .num { font-size: 1.9rem; font-weight: 800; color: #fff; line-height: 1.1; }
.stat .label { color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; }

/* Tables (desktop) */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.65rem 0.75rem; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.05em; }
tr:last-child td { border-bottom: none; }
td.right, th.right { text-align: right; }

/* ----------------------------- Buttons ----------------------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  cursor: pointer; min-height: var(--tap);
  padding: 0.6rem 1.1rem; border-radius: var(--radius-sm); border: 1px solid transparent;
  font-weight: 700; font-size: 0.95rem; line-height: 1;
  background: var(--brand); color: #04210f;
  transition: transform 0.06s ease, background 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { background: var(--brand-dark); text-decoration: none; color: #04210f; }
.btn:active { transform: translateY(1px); }
.btn.secondary { background: transparent; border-color: var(--line); color: var(--text); }
.btn.secondary:hover { background: var(--panel-2); color: #fff; }
.btn.danger { background: var(--danger); color: #fff; }
.btn.danger:hover { background: #dc2626; color: #fff; }
.btn.small { min-height: 36px; padding: 0.4rem 0.75rem; font-size: 0.82rem; }

.actions { display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; margin-top: 1rem; }
.inline { display: inline; }

/* ----------------------------- Forms ----------------------------- */

.field { margin-bottom: 1rem; }
label { display: block; margin-bottom: 0.35rem; color: var(--muted); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.01em; }
input, select, textarea {
  width: 100%; padding: 0.7rem 0.8rem; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: var(--bg); color: var(--text);
  font-size: 16px; /* prevent iOS zoom */
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}
input.mono { font-family: var(--mono); letter-spacing: 0.02em; }
input.invalid { border-color: var(--danger); box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.18); }

/* ----------------------------- Flash ----------------------------- */

.flash { padding: 0.8rem 1rem; border-radius: var(--radius-sm); margin-bottom: 1.1rem; font-weight: 600; }
.flash.success { background: var(--brand-soft); color: #86efac; border: 1px solid rgba(34, 197, 94, 0.3); }
.flash.error { background: rgba(239, 68, 68, 0.15); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.3); }

.muted { color: var(--muted); }
.right { text-align: right; }
.mono { font-family: var(--mono); }

/* ============================================================
   SIM slot cards (editor + read-out)
   ============================================================ */

.step-heading {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 0.75rem; margin: 0.25rem 0 0.85rem;
}

.slot-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--brand);
  border-radius: var(--radius);
  padding: 0.9rem 1rem 1rem;
  margin-bottom: 0.85rem;
}
.slot-card.readonly { border-left-color: var(--accent); }

.slot-head { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.8rem; }
.slot-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; flex: none;
  border-radius: 8px; background: var(--brand-soft); color: var(--brand);
  font-family: var(--mono); font-weight: 700; font-size: 0.9rem;
}
.slot-card.readonly .slot-badge { background: rgba(56, 189, 248, 0.14); color: var(--accent); }
.slot-title { font-weight: 700; color: #fff; font-size: 0.95rem; }

.slot-card .field { margin-bottom: 0.7rem; }
.slot-card .field:last-child { margin-bottom: 0; }
.slot-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; }
.slot-row .field { margin-bottom: 0.7rem; }

/* Read-out grid (show page) */
.read-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.55rem 0.9rem; margin: 0; }
.read-grid .span-2 { grid-column: 1 / -1; }
.read-grid dt { color: var(--muted); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700; margin-bottom: 0.1rem; }
.read-grid dd { margin: 0; color: var(--text); word-break: break-all; }

/* ============================================================
   Progressive one-slot-at-a-time wizard
   ============================================================ */

.wizard { margin-top: 0.25rem; }

.wizard-head { margin-bottom: 0.9rem; }
.step-label { margin: 0 0 0.5rem; font-weight: 700; color: #fff; font-size: 0.9rem; }
.step-label .accent { color: var(--brand); }
.wizard-progress { display: flex; gap: 0.4rem; }
.wizard-progress .seg { flex: 1; height: 6px; border-radius: 999px; background: var(--line); transition: background 0.25s ease; }
.wizard-progress .seg.done { background: var(--brand); }

.wizard-error {
  margin: 0 0 0.9rem; padding: 0.7rem 0.9rem; border-radius: var(--radius-sm);
  background: rgba(239, 68, 68, 0.14); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.3);
  font-weight: 600; font-size: 0.9rem;
}

/* Step visibility: only collapsed when JS is active */
html.js .wizard-step { display: none; }
html.js .wizard-step.is-active { display: block; animation: stepIn 0.22s ease; }
@keyframes stepIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Step nav buttons are useless without JS */
.btn-next, .btn-back { display: none; }
html.js .btn-next, html.js .btn-back { display: inline-flex; }

.wizard-actions { display: flex; gap: 0.6rem; align-items: center; margin-top: 1rem; }
.wizard-actions .btn { flex: 1; }
.wizard-actions .cancel-inline { flex: 0 0 auto; }

/* Locked admin-defined prefix + suffix input */
.input-prefix { display: flex; align-items: stretch; }
.input-prefix .prefix-chip {
  display: inline-flex; align-items: center; flex: none;
  padding: 0 0.6rem; border: 1px solid var(--line); border-right: 0;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  background: var(--panel-2); color: var(--muted);
  font-size: 0.95rem; white-space: nowrap; cursor: default; user-select: none;
}
.input-prefix input { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; min-width: 0; flex: 1; }

/* Per-panel inline review */
.confirm-list { display: grid; gap: 0.5rem; margin-bottom: 0.25rem; }
.confirm-row {
  display: flex; align-items: center; gap: 0.7rem;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 0.55rem 0.7rem;
}
.confirm-data { display: flex; flex-direction: column; min-width: 0; }
.confirm-iccid { color: var(--text); word-break: break-all; }
.confirm-phone { font-size: 0.85rem; }

/* ============================================================
   Responsive list tables → stacked cards on phones
   ============================================================ */

@media (max-width: 640px) {
  .table-list, .table-list tbody, .table-list tr, .table-list td { display: block; width: 100%; }
  .table-list thead { display: none; }
  .table-list tr {
    border: 1px solid var(--line); border-radius: var(--radius);
    background: var(--panel-2); padding: 0.35rem 0.9rem; margin-bottom: 0.75rem;
  }
  .table-list td { border: none; padding: 0.45rem 0; display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
  .table-list td::before {
    content: attr(data-label); color: var(--muted);
    font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700;
  }
  .table-list td.cell-actions { justify-content: flex-end; flex-wrap: wrap; padding-top: 0.6rem; }
  .table-list td.cell-actions::before { display: none; }
}

/* ============================================================
   Sticky action bar + full-width buttons on small screens
   ============================================================ */

@media (max-width: 640px) {
  .page-head .btn { min-height: 40px; }

  html.js .wizard-actions {
    position: sticky; bottom: 0; z-index: 30;
    margin: 1rem -1rem -3rem; padding: 0.8rem 1rem calc(0.8rem + env(safe-area-inset-bottom));
    background: linear-gradient(180deg, rgba(11, 18, 32, 0), var(--bg) 35%);
    border-top: 1px solid var(--line);
  }

  .actions { flex-direction: column; align-items: stretch; }
  .actions .btn, .actions form, .actions form .btn { width: 100%; }
}

/* ----------------------------- Login ----------------------------- */

.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 1.25rem; }
.login-box { width: 100%; max-width: 380px; }
.login-box h1 { text-align: center; margin-bottom: 0.25rem; font-size: 1.5rem; }
.login-box .sub { text-align: center; color: var(--muted); margin-bottom: 1.5rem; }
.code { font-family: var(--mono); background: var(--bg); padding: 0.1rem 0.35rem; border-radius: 4px; }