/* Concurrent-login warning + secure workspace loading */

.session-replaced-page {
  margin: 0;
  min-height: 100vh;
  background: #0b1220;
}

.session-guard-overlay {
  position: fixed;
  inset: 0;
  z-index: 10050;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: color-mix(in srgb, #0b1220 78%, transparent);
  backdrop-filter: blur(8px);
}

.session-guard-overlay.is-visible {
  display: flex;
}

.session-guard-card {
  width: min(440px, 100%);
  padding: 28px 26px 24px;
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, #f59e0b 35%, transparent);
  background: linear-gradient(180deg, #121a2b 0%, #0e1624 100%);
  color: #e8eef8;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  text-align: center;
}

.session-guard-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: #fbbf24;
  background: color-mix(in srgb, #f59e0b 16%, transparent);
  border: 1px solid color-mix(in srgb, #f59e0b 30%, transparent);
}

.session-guard-card h1,
.session-guard-card h2 {
  margin: 0 0 10px;
  font-size: 1.25rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  color: #f8fafc;
}

.session-guard-card p {
  margin: 0 0 18px;
  color: #cbd5e1;
  line-height: 1.55;
  font-size: 0.95rem;
}

.session-guard-countdown {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  margin-bottom: 14px;
}

.session-guard-countdown-label,
.session-guard-countdown-unit {
  color: #94a3b8;
  font-size: 0.85rem;
}

.session-guard-countdown strong {
  font-size: 2rem;
  font-variant-numeric: tabular-nums;
  color: #f8fafc;
  min-width: 1.4em;
}

.session-guard-progress {
  height: 4px;
  border-radius: 999px;
  background: color-mix(in srgb, #94a3b8 22%, transparent);
  overflow: hidden;
}

.session-guard-progress-bar {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #f59e0b, #fbbf24);
  transition: width 0.2s linear;
}

/* Premium workspace loading (new device after login) */
.session-prepare-overlay {
  position: fixed;
  inset: 0;
  z-index: 10060;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(ellipse 80% 55% at 50% 20%, rgba(37, 99, 235, 0.18), transparent 60%),
    linear-gradient(180deg, #070b14 0%, #0b1220 55%, #0a101c 100%);
  color: #e8eef8;
}

.session-prepare-overlay.is-visible {
  display: flex;
}

.session-prepare-inner {
  width: min(420px, 100%);
  text-align: center;
}

.session-prepare-mark {
  width: 64px;
  height: 64px;
  margin: 0 auto 22px;
  position: relative;
}

.session-prepare-mark svg {
  width: 100%;
  height: 100%;
}

.session-prepare-ring {
  fill: none;
  stroke: color-mix(in srgb, #60a5fa 35%, transparent);
  stroke-width: 2;
}

.session-prepare-arc {
  fill: none;
  stroke: #60a5fa;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-dasharray: 40 80;
  transform-origin: 32px 32px;
  animation: session-prepare-spin 1.1s linear infinite;
}

.session-prepare-brand {
  margin: 0 0 8px;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #93c5fd;
  font-weight: 600;
}

.session-prepare-inner h1 {
  margin: 0 0 8px;
  font-size: 1.45rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.session-prepare-inner p {
  margin: 0 0 22px;
  color: #94a3b8;
  line-height: 1.5;
}

.session-prepare-status {
  min-height: 1.4em;
  margin: 0 0 18px;
  font-size: 0.9rem;
  color: #cbd5e1;
}

.session-prepare-track {
  height: 3px;
  border-radius: 999px;
  background: color-mix(in srgb, #64748b 35%, transparent);
  overflow: hidden;
}

.session-prepare-bar {
  height: 100%;
  width: 18%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2563eb, #38bdf8);
  animation: session-prepare-pulse 1.4s ease-in-out infinite;
}

.session-prepare-error .session-prepare-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 18px;
}

.session-prepare-error .session-prepare-actions a,
.session-prepare-error .session-prepare-actions button {
  appearance: none;
  border: 1px solid color-mix(in srgb, #94a3b8 35%, transparent);
  background: transparent;
  color: #e2e8f0;
  border-radius: 10px;
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
  text-decoration: none;
}

.session-prepare-error .session-prepare-actions .primary {
  background: #2563eb;
  border-color: #2563eb;
}

@keyframes session-prepare-spin {
  to { transform: rotate(360deg); }
}

@keyframes session-prepare-pulse {
  0% { width: 12%; margin-left: 0; }
  50% { width: 42%; margin-left: 28%; }
  100% { width: 12%; margin-left: 88%; }
}

@media (prefers-reduced-motion: reduce) {
  .session-prepare-arc,
  .session-prepare-bar {
    animation: none;
  }
  .session-prepare-bar {
    width: 55%;
    margin-left: 0;
  }
  .session-guard-progress-bar {
    transition: none;
  }
}

[data-theme="light"] .session-guard-card {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  color: #0f172a;
  border-color: color-mix(in srgb, #d97706 30%, transparent);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.12);
}

[data-theme="light"] .session-guard-card h1,
[data-theme="light"] .session-guard-card h2,
[data-theme="light"] .session-guard-countdown strong {
  color: #0f172a;
}

[data-theme="light"] .session-guard-card p,
[data-theme="light"] .session-guard-countdown-label,
[data-theme="light"] .session-guard-countdown-unit {
  color: #475569;
}