:root {
  color-scheme: light;
  --app-brand: #6366F1;
  --app-brand-strong: #4F46E5;
  --app-brand-soft: #eeeeff;
  --app-cyan: #06B6D4;
  --app-ink: #171721;
  --app-text: #343444;
  --app-muted: #717184;
  --app-faint: #9b9bab;
  --app-border: #e5e5ec;
  --app-border-strong: #d2d2dd;
  --app-surface: #ffffff;
  --app-surface-soft: #f7f7fa;
  --app-surface-hover: #f1f1f6;
  --app-danger: #c93c53;
  --app-danger-soft: #fff0f2;
  --app-success: #167a55;
  --app-success-soft: #eaf8f1;
  --app-warning: #99620d;
  --app-warning-soft: #fff7e8;
  --app-shadow-small: 0 1px 2px rgba(23, 23, 33, 0.06), 0 4px 12px rgba(23, 23, 33, 0.04);
  --app-shadow-large: 0 24px 70px rgba(23, 23, 48, 0.14);
  --app-radius-small: 8px;
  --app-radius-medium: 12px;
  --app-radius-large: 18px;
  --app-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--app-surface-soft);
  font-family: var(--app-font);
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--app-text);
  background: var(--app-surface-soft);
}

button,
input,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  border: 0;
}

a {
  color: inherit;
}

img,
svg {
  display: block;
}

[hidden] {
  display: none !important;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: var(--app-radius-small);
  color: #ffffff;
  background: var(--app-ink);
  transform: translateY(-160%);
  transition: transform 150ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

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

.app-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--app-ink);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.app-brand img {
  width: 34px;
  height: 34px;
}

.app-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: var(--app-radius-small);
  color: var(--app-text);
  background: transparent;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease, color 140ms ease, transform 140ms ease;
}

.app-button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.app-button:active:not(:disabled) {
  transform: translateY(0);
}

.app-button:disabled {
  cursor: not-allowed;
  opacity: 0.56;
}

.app-button-primary {
  color: #ffffff;
  background: var(--app-brand);
  box-shadow: 0 6px 18px rgba(99, 102, 241, 0.2);
}

.app-button-primary:hover:not(:disabled) {
  background: var(--app-brand-strong);
}

.app-button-secondary {
  border-color: var(--app-border);
  background: var(--app-surface);
  box-shadow: var(--app-shadow-small);
}

.app-button-secondary:hover:not(:disabled) {
  border-color: var(--app-border-strong);
  background: var(--app-surface-hover);
}

.app-button-quiet {
  min-height: 36px;
  padding-inline: 11px;
  color: var(--app-muted);
}

.app-button-quiet:hover:not(:disabled) {
  color: var(--app-ink);
  background: var(--app-surface-hover);
}

.app-button-danger {
  color: var(--app-danger);
  background: var(--app-danger-soft);
}

:where(a, button, input, select, summary):focus-visible {
  outline: 3px solid rgba(99, 102, 241, 0.28);
  outline-offset: 2px;
}

.app-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: app-spin 700ms linear infinite;
}

.app-inline-message {
  padding: 12px 14px;
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius-small);
  color: var(--app-muted);
  background: var(--app-surface-soft);
  font-size: 0.88rem;
  line-height: 1.45;
}

.app-inline-message[data-tone='error'] {
  border-color: #f3c9d0;
  color: #962f42;
  background: var(--app-danger-soft);
}

.app-inline-message[data-tone='success'] {
  border-color: #bde5d1;
  color: var(--app-success);
  background: var(--app-success-soft);
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}