:root {
  color-scheme: dark;
  --elevenx-canvas: #191a1e;
  --elevenx-surface: #232328;
  --elevenx-surface-raised: #292a30;
  --elevenx-surface-soft: #1e1f24;
  --elevenx-foreground: #eeeff3;
  --elevenx-muted: #929ba8;
  --elevenx-faint: #818b98;
  --elevenx-primary: #9ba9b9;
  --elevenx-primary-hover: #b7c2ce;
  --elevenx-on-primary: #181a1e;
  --elevenx-control: #202127;
  --elevenx-border: #353740;
  --elevenx-border-soft: #2b2d34;
  --elevenx-focus: #9ba9b9;
  --elevenx-success: #70ad8e;
  --elevenx-success-soft: rgba(112, 173, 142, 0.11);
  --elevenx-warning: #d1a35d;
  --elevenx-warning-soft: rgba(209, 163, 93, 0.1);
  --elevenx-danger: #e47a70;
  --elevenx-danger-soft: rgba(228, 122, 112, 0.1);
  --elevenx-data-1: #9ba9b9;
  --elevenx-data-2: #a8c8b3;
  --elevenx-data-3: #c9b7c5;
  --elevenx-data-4: #b9c5dc;
  --elevenx-data-5: #d5d8df;
  --elevenx-shadow: 0 18px 50px rgba(0, 0, 0, 0.2);
  --elevenx-canvas-glow: rgba(155, 169, 185, 0.09);
  --elevenx-chrome-bg: #16171b;
  --elevenx-chrome-overlay: rgba(22, 23, 27, 0.94);
  --elevenx-chrome-surface: #202127;
  --elevenx-chrome-surface-raised: #292a30;
  --elevenx-chrome-text: #eeeff3;
  --elevenx-chrome-muted: #929ba8;
  --elevenx-chrome-faint: #69727e;
  --elevenx-chrome-primary: #9ba9b9;
  --elevenx-chrome-border: #353740;
  --elevenx-chrome-border-soft: #2b2d34;
  --elevenx-chrome-danger: #e47a70;
  --elevenx-radius: 13px;
  --elevenx-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", Meiryo,
    sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --elevenx-canvas: #f5f6f8;
  --elevenx-surface: #ffffff;
  --elevenx-surface-raised: #eef1f4;
  --elevenx-surface-soft: #f8f9fb;
  --elevenx-foreground: #191a1e;
  --elevenx-muted: #566171;
  --elevenx-faint: #66717f;
  --elevenx-primary: #52677f;
  --elevenx-primary-hover: #40566f;
  --elevenx-on-primary: #ffffff;
  --elevenx-control: #ffffff;
  --elevenx-border: #cbd1d9;
  --elevenx-border-soft: #e0e4e9;
  --elevenx-focus: #52677f;
  --elevenx-success: #2f7d58;
  --elevenx-success-soft: rgba(47, 125, 88, 0.12);
  --elevenx-warning: #8a6427;
  --elevenx-warning-soft: rgba(138, 100, 39, 0.1);
  --elevenx-danger: #b6473d;
  --elevenx-danger-soft: rgba(182, 71, 61, 0.1);
  --elevenx-data-1: #52677f;
  --elevenx-data-2: #39705a;
  --elevenx-data-3: #775e72;
  --elevenx-data-4: #586b8a;
  --elevenx-data-5: #4f5b68;
  --elevenx-shadow: 0 10px 30px rgba(29, 38, 49, 0.08);
  --elevenx-canvas-glow: rgba(82, 103, 127, 0.08);
}

@media print {
  :root {
    color-scheme: light;
    --elevenx-canvas: #ffffff;
    --elevenx-surface: #ffffff;
    --elevenx-surface-raised: #f3f4f6;
    --elevenx-surface-soft: #ffffff;
    --elevenx-foreground: #111318;
    --elevenx-muted: #4c5562;
    --elevenx-faint: #596371;
    --elevenx-border: #c8cdd4;
    --elevenx-border-soft: #dfe2e6;
    --elevenx-shadow: none;
  }
}

.elevenx-product-header {
  position: sticky;
  top: 0;
  z-index: 40;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 clamp(18px, 4vw, 48px);
  border-bottom: 1px solid var(--elevenx-chrome-border-soft);
  background: var(--elevenx-chrome-overlay);
  color: var(--elevenx-chrome-text);
  font-family: var(--elevenx-font);
  backdrop-filter: blur(18px);
}

.elevenx-product-header-brand-cluster,
.elevenx-product-session,
.elevenx-product-navigation {
  display: flex;
  align-items: center;
}

.elevenx-product-header-brand-cluster { gap: 16px; min-width: 0; }
.elevenx-product-navigation { align-self: stretch; gap: 4px; }
.elevenx-product-session { margin-left: auto; gap: 10px; }

.elevenx-product-brand {
  display: flex;
  align-items: center;
  color: var(--elevenx-chrome-text);
  text-decoration: none;
  white-space: nowrap;
}

.elevenx-product-brand img { display: block; width: auto; max-width: 220px; height: 30px; }

.elevenx-product-identity {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  color: var(--elevenx-chrome-text);
  line-height: 1.25;
}

.elevenx-product-identity small {
  color: var(--elevenx-chrome-muted);
  font-size: 11px;
}

.elevenx-product-session-button {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--elevenx-chrome-border);
  border-radius: 7px;
  padding: 0 10px;
  background: transparent;
  color: var(--elevenx-chrome-text);
  font: inherit;
  font-size: 10px;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
}

.elevenx-product-session-button:hover:not(:disabled) {
  border-color: var(--elevenx-chrome-primary);
  background: rgba(155, 169, 185, 0.08);
}

.elevenx-product-session-button:focus-visible,
.elevenx-appearance-picker select:focus-visible {
  outline: 2px solid var(--elevenx-chrome-primary);
  outline-offset: 2px;
}

.elevenx-appearance-picker {
  display: grid;
  grid-template-columns: auto minmax(80px, 1fr);
  align-items: center;
  gap: 6px;
  color: var(--elevenx-chrome-muted);
  font-family: var(--elevenx-font);
  font-size: 8px;
}

.elevenx-appearance-picker select {
  min-width: 82px;
  min-height: 30px;
  border: 1px solid var(--elevenx-chrome-border);
  border-radius: 7px;
  padding: 4px 24px 4px 8px;
  background: var(--elevenx-chrome-surface);
  color: var(--elevenx-chrome-text);
  font: inherit;
  font-size: 10px;
  font-weight: 650;
}

.elevenx-auth-screen,
.elevenx-restoring-screen {
  min-height: 100dvh;
  background: var(--elevenx-canvas);
  color: var(--elevenx-foreground);
  font-family: var(--elevenx-font);
}

.elevenx-auth-screen {
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 18px;
  padding: 40px 20px;
  background:
    radial-gradient(circle at top left, var(--elevenx-canvas-glow), transparent 36%),
    var(--elevenx-canvas);
  text-align: center;
}

.elevenx-restoring-screen { position: relative; overflow: hidden; }
.elevenx-restoring-progress { position: absolute; inset: 0 0 auto; height: 2px; overflow: hidden; background: color-mix(in srgb, var(--elevenx-primary) 12%, transparent); }
.elevenx-restoring-progress::after { content: ""; position: absolute; inset-block: 0; left: -32%; width: 32%; border-radius: 999px; background: var(--elevenx-primary); animation: elevenx-restoring-progress 1.1s ease-in-out infinite; }

.elevenx-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.elevenx-auth-brand { display: flex; align-items: center; gap: 12px; padding: 8px 10px; }
.elevenx-auth-brand img { display: block; max-width: min(220px, 68vw); max-height: 48px; }

.elevenx-auth-card {
  width: min(440px, calc(100vw - 40px));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--elevenx-border);
  border-radius: 14px;
  padding: 32px;
  background: var(--elevenx-surface);
  box-shadow: var(--elevenx-shadow);
}

.elevenx-auth-card h1,
.elevenx-auth-card p { margin: 0; }
.elevenx-auth-card h1 { color: var(--elevenx-foreground); font-size: 26px; font-weight: 600; line-height: 1.25; letter-spacing: -0.01em; }
.elevenx-auth-card > p:last-of-type { color: var(--elevenx-muted); line-height: 1.6; }
.elevenx-auth-eyebrow { color: var(--elevenx-primary); font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.elevenx-auth-actions { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 8px; }
.elevenx-auth-spinner { width: 24px; height: 24px; border: 3px solid var(--elevenx-border); border-top-color: var(--elevenx-primary); border-radius: 50%; animation: elevenx-auth-spin 0.8s linear infinite; }

@keyframes elevenx-auth-spin { to { transform: rotate(360deg); } }
@keyframes elevenx-restoring-progress { 0% { transform: translateX(0); } 55%, 100% { transform: translateX(410%); } }

@media (prefers-reduced-motion: reduce) {
  .elevenx-auth-spinner,
  .elevenx-restoring-progress::after { animation-duration: 2.4s; }
}

@media (max-width: 680px) {
  .elevenx-product-header { min-height: 58px; padding-inline: 14px; }
  .elevenx-product-navigation,
  .elevenx-product-identity,
  .elevenx-appearance-picker > span { display: none; }
  .elevenx-appearance-picker { grid-template-columns: minmax(76px, 1fr); }
  .elevenx-product-session { gap: 6px; }
  .elevenx-product-session-button { padding-inline: 8px; }
}