:root {
  --bg: #e8eef6;
  --panel: rgba(255, 255, 255, .72);
  --panel-strong: rgba(255, 255, 255, .88);
  --border: rgba(255, 255, 255, .88);
  --ink: #1f2937;
  --muted: #64748b;
  --subtle: #94a3b8;
  --blue: #2563eb;
  --cyan: #0e7490;
  --green: #047857;
  --red: #b91c1c;
  --line: rgba(71, 85, 105, .13);
  --shadow: 0 12px 34px rgba(71, 85, 105, .14), 0 2px 8px rgba(71, 85, 105, .06);
  --small-radius: 9px;
  --radius: 15px;
  font-size: 14px;
}

*, *::before, *::after { box-sizing: border-box; }
html { min-height: 100%; -webkit-font-smoothing: antialiased; }
body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background: linear-gradient(135deg, #e8eef6 0%, #eff5fb 52%, #e8f1f3 100%);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
button, input, select, textarea { font: inherit; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: #1d4ed8; }
button, a { -webkit-tap-highlight-color: transparent; }

.page-shell { position: relative; z-index: 1; width: min(100% - 32px, 1180px); margin: 0 auto; padding: 22px 0 42px; }
.page-shell.narrow { width: min(100% - 32px, 720px); }
.page-shell.wide { width: min(100% - 32px, 1240px); }
.site-header {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  min-height: 70px; margin-bottom: 18px; padding: 13px 20px;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel);
  box-shadow: 0 3px 14px rgba(71, 85, 105, .08); backdrop-filter: blur(22px) saturate(1.2);
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark, .hero-icon, .auth-icon {
  display: grid; flex: 0 0 auto; place-items: center; color: var(--blue); background: rgba(37, 99, 235, .10);
}
.brand-mark { width: 42px; height: 42px; border-radius: 12px; color: #fff; background: linear-gradient(135deg, #2563eb, #0891b2); box-shadow: 0 6px 16px rgba(37, 99, 235, .22); }
.brand-copy { min-width: 0; }
.brand-title { margin: 0; font-size: 1.05rem; font-weight: 760; letter-spacing: -.02em; }
.brand-subtitle { margin: 1px 0 0; color: var(--subtle); font-size: .74rem; white-space: nowrap; }
.header-actions, .header-nav, .toolbar-actions { display: flex; align-items: center; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.header-nav a { padding: 6px 10px; border-radius: 8px; color: var(--muted); font-size: .76rem; font-weight: 700; }
.header-nav a:hover { background: rgba(255,255,255,.78); color: var(--blue); }
.status-chip, .status-pill { display: inline-flex; align-items: center; gap: 7px; padding: 6px 10px; border: 1px solid rgba(4,120,87,.16); border-radius: 999px; color: var(--green); background: rgba(16,185,129,.08); font-size: .72rem; font-weight: 750; white-space: nowrap; }
.status-chip::before { width: 7px; height: 7px; border-radius: 50%; background: currentColor; content: ""; box-shadow: 0 0 0 4px rgba(16,185,129,.10); }
.status-pill.off { border-color: rgba(185,28,28,.16); color: var(--red); background: rgba(239,68,68,.08); }
.icon-link, .icon-button { display: inline-grid; place-items: center; border: 1px solid var(--line); color: var(--muted); background: rgba(255,255,255,.54); cursor: pointer; }
.icon-link { width: 34px; height: 34px; border-radius: 9px; }
.icon-button { width: 36px; height: 36px; border-radius: 9px; transition: 180ms ease; }
.icon-link:hover, .icon-button:hover { color: var(--blue); border-color: rgba(37,99,235,.25); background: rgba(255,255,255,.9); }
.icon-button.is-confirmed { color: var(--green); border-color: rgba(4,120,87,.25); }

.glass-panel { border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); box-shadow: var(--shadow); backdrop-filter: blur(22px) saturate(1.2); }
.card { padding: 26px; }
.public-content { display: grid; gap: 16px; }
.public-hero { padding: 28px 26px 25px; }
.hero-icon { width: 58px; height: 58px; margin-bottom: 18px; border-radius: 17px; }
.eyebrow { margin: 0 0 8px; color: var(--blue); font-size: .68rem; font-weight: 850; letter-spacing: .15em; text-transform: uppercase; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 { margin: 0; font-size: clamp(1.55rem, 2.8vw, 2.1rem); letter-spacing: -.045em; line-height: 1.2; }
h2 { margin: 0; font-size: 1.06rem; letter-spacing: -.025em; }
.lead { margin: 9px 0 0; color: var(--muted); font-size: .86rem; }
.muted { color: var(--subtle); }
.small { font-size: .74rem; }
.form-stack { display: grid; gap: 16px; }
.field { display: grid; gap: 7px; }
.field label { color: var(--muted); font-size: .76rem; font-weight: 750; }
.field-help { margin: 0; color: var(--subtle); font-size: .71rem; }
.input, .select, .textarea { width: 100%; border: 1px solid rgba(71,85,105,.15); border-radius: var(--small-radius); outline: none; color: var(--ink); background: rgba(255,255,255,.78); transition: 180ms ease; }
.input, .select { min-height: 42px; padding: 9px 12px; }
.textarea { min-height: 120px; resize: vertical; padding: 11px 12px; }
.input::placeholder, .textarea::placeholder { color: #a8b3c2; }
.input:focus, .select:focus, .textarea:focus { border-color: rgba(37,99,235,.52); background: var(--panel-strong); box-shadow: 0 0 0 4px rgba(37,99,235,.11); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: .01em; }
.btn { display: inline-flex; min-height: 40px; align-items: center; justify-content: center; gap: 7px; padding: 9px 15px; border: 1px solid transparent; border-radius: var(--small-radius); cursor: pointer; font-size: .77rem; font-weight: 750; transition: 180ms ease; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(.98); }
.btn:disabled { cursor: wait; opacity: .62; transform: none; }
.btn-primary { color: #fff; background: linear-gradient(135deg, #3b82f6, #2563eb); box-shadow: 0 5px 14px rgba(37,99,235,.22); }
.btn-primary:hover { box-shadow: 0 8px 20px rgba(37,99,235,.29); }
.btn-secondary { color: var(--muted); border-color: var(--line); background: rgba(255,255,255,.58); }
.btn-secondary:hover { color: var(--blue); background: rgba(255,255,255,.92); }
.btn-danger { color: var(--red); border-color: rgba(185,28,28,.17); background: rgba(254,226,226,.58); }
.btn-block { width: 100%; }
.alert, .notice { padding: 12px 14px; border-radius: var(--small-radius); font-size: .77rem; }
.alert { border: 1px solid rgba(185,28,28,.17); color: #991b1b; background: rgba(254,226,226,.78); }
.notice { border: 1px solid rgba(37,99,235,.15); color: var(--muted); background: rgba(219,234,254,.5); }
.hidden { display: none !important; }

.captcha-panel { display: grid; gap: 15px; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.42); }
.captcha-heading, .card-heading, .page-toolbar { display: flex; align-items: end; justify-content: space-between; gap: 16px; }
.captcha-heading p, .card-heading p { margin: 4px 0 0; color: var(--subtle); font-size: .73rem; }
.captcha-row { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: end; gap: 16px; }
.captcha-row img { display: block; width: 220px; height: 76px; border-radius: 8px; box-shadow: 0 4px 12px rgba(71,85,105,.11); }
.captcha-input { text-align: center; font-size: 1.1rem; font-weight: 750; letter-spacing: .18em; text-transform: uppercase; }
.activation-card { display: grid; gap: 16px; }
.activation-number { display: flex; align-items: center; gap: 10px; padding: 15px 16px; border: 1px solid rgba(37,99,235,.14); border-radius: var(--radius); background: rgba(219,234,254,.42); }
.activation-number span, .data-tile span { color: var(--subtle); font-size: .73rem; font-weight: 700; }
.activation-number strong { flex: 1; min-width: 0; overflow-wrap: anywhere; color: var(--ink); font: 750 1.25rem ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: .02em; }
.activation-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.data-tile { display: grid; gap: 5px; padding: 15px 16px; border: 1px solid var(--line); border-radius: var(--small-radius); background: rgba(255,255,255,.54); }
.data-tile strong { color: var(--ink); font-size: 1.05rem; }
.data-tile strong.code-visible { color: var(--blue); font-size: 1.35rem; letter-spacing: .12em; }
.page-note { margin: 0; color: var(--subtle); font-size: .71rem; text-align: center; }
.auth-layout { display: grid; min-height: calc(100vh - 160px); place-items: center; }
.auth-card { width: min(100%, 470px); padding: 34px; }
.auth-heading { margin-bottom: 24px; text-align: center; }
.auth-icon { width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 17px; }

.admin-hero-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.stats-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat-card { padding: 18px 20px; }
.stat-label { margin: 0 0 8px; color: var(--subtle); font-size: .72rem; font-weight: 700; }
.stat-value { margin: 0; color: var(--ink); font-size: 1.75rem; font-weight: 760; letter-spacing: -.05em; }
.stat-foot { margin: 6px 0 0; color: var(--muted); font-size: .72rem; }
.dashboard-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 16px; }
.data-list { display: grid; gap: 0; }
.data-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.data-row:last-child { border-bottom: 0; }
.data-key { color: var(--subtle); font-size: .76rem; }
.data-key strong { display: block; color: var(--ink); font-size: .83rem; }
.data-key small { color: var(--subtle); font-size: .69rem; }
.data-value { color: var(--muted); font-size: .78rem; font-weight: 650; text-align: right; }
.page-toolbar { align-items: end; margin-bottom: 16px; }
.toolbar-actions { margin: 0; }
.create-card { margin-bottom: 16px; padding: 18px 20px; }
.inline-form { display: flex; align-items: end; gap: 10px; }
.inline-form .field { flex: 1; }
.count-field { max-width: 150px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.form-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 4px; }
.form-footer .muted { font-size: .72rem; }
.code-export { display: grid; gap: 8px; margin-bottom: 16px; }
.code-export p { margin: 0; }
.table-wrap { overflow-x: auto; }
table { width: 100%; min-width: 760px; border-collapse: collapse; }
th { padding: 11px 12px; color: var(--subtle); font-size: .68rem; font-weight: 800; letter-spacing: .08em; text-align: left; text-transform: uppercase; }
td { padding: 13px 12px; border-top: 1px solid var(--line); color: var(--muted); font-size: .76rem; vertical-align: middle; }
td:first-child { color: var(--ink); font-weight: 700; }
.row-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.row-actions .btn { min-height: 32px; padding: 6px 10px; font-size: .69rem; }

@media (max-width: 820px) {
  .page-shell, .page-shell.narrow, .page-shell.wide { width: min(100% - 22px, 680px); padding-top: 11px; }
  .site-header { padding: 12px 14px; }
  .brand-subtitle { display: none; }
  .header-nav { gap: 2px; }
  .header-nav a { padding: 6px 7px; }
  .page-toolbar, .card-heading { align-items: flex-start; flex-direction: column; }
  .stats-grid, .dashboard-grid, .form-grid { grid-template-columns: 1fr; }
  .form-grid .full { grid-column: auto; }
  .inline-form { align-items: stretch; flex-direction: column; }
  .count-field { max-width: none; }
  .form-footer { align-items: stretch; flex-direction: column; }
  .captcha-row { grid-template-columns: 1fr; }
  .captcha-row img { width: min(100%, 220px); }
  .data-row { align-items: flex-start; flex-direction: column; gap: 8px; }
  .data-value { text-align: left; }
}
@media (max-width: 520px) {
  .page-shell, .page-shell.narrow, .page-shell.wide { width: min(100% - 16px, 100%); }
  .site-header { border-radius: 13px; }
  .brand-mark { width: 38px; height: 38px; }
  .brand-title { font-size: .94rem; }
  .card, .auth-card { padding: 20px; }
  .activation-grid { grid-template-columns: 1fr; }
  .header-actions .status-chip { padding: 5px 8px; font-size: .68rem; }
}