:root {
  --color-bg: #282c34;
  --color-surface: #323640;
  --color-text: #ffffff;
  --color-text-muted: #98a0b3;
  --color-accent: #fff000;
  --color-accent-text: #1a1d24;
  --color-brand-diamond: #ffffff;
  --color-figure-left: #98a0b3;
  --color-error: #ff6b6b;
  --radius: 10px;
  --space: 1rem;
  --touch: 48px;
  font-size: 100%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: system-ui, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.45;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  background: var(--color-accent);
  color: var(--color-accent-text);
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus {
  left: var(--space);
  top: var(--space);
}

.shell {
  max-width: 28rem;
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 1.75rem);
  padding-bottom: 3rem;
}

.brand {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.5rem;
}

.brand-logo {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
}

.logo-img {
  display: block;
  width: 56px;
  height: 56px;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.brand-text h1 {
  font-size: clamp(1.35rem, 4vw, 1.6rem);
  font-weight: 700;
  margin: 0 0 0.35rem;
  letter-spacing: -0.02em;
  color: #fff;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.lede {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: clamp(1rem, 3vw, 1.35rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.field label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  color: var(--color-text-muted);
}

.req {
  color: var(--color-accent);
}

.field input[type="text"],
.field input:not([type]) {
  width: 100%;
  min-height: var(--touch);
  padding: 0.65rem 0.85rem;
  border-radius: calc(var(--radius) - 4px);
  border: 1px solid rgba(152, 160, 179, 0.45);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1rem;
}

.field input:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.field input::placeholder {
  color: rgba(152, 160, 179, 0.65);
}

.hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: 0.35rem 0 0;
}

.date-picker-label {
  display: block;
  margin: 0.75rem 0 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.date-picker-assist {
  margin-top: 0;
  width: 100%;
  min-height: var(--touch);
  padding: 0.5rem;
  border-radius: calc(var(--radius) - 4px);
  border: 1px dashed rgba(152, 160, 179, 0.5);
  background: transparent;
  color: var(--color-text);
  font-size: 0.95rem;
}

.field-error {
  margin: 0.35rem 0 0;
  font-size: 0.85rem;
  color: var(--color-error);
  min-height: 1.2em;
}

.field-error:empty,
.field-error[hidden] {
  display: none;
}

.banner {
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.banner-error {
  background: rgba(255, 107, 107, 0.12);
  border: 1px solid rgba(255, 107, 107, 0.35);
  color: #ffb4b4;
}

.btn-primary {
  margin-top: 0.5rem;
  width: 100%;
  min-height: var(--touch);
  border: none;
  border-radius: var(--radius);
  background: var(--color-accent);
  color: var(--color-accent-text);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: filter 0.15s ease, transform 0.05s ease;
}

.btn-primary:hover:not(:disabled) {
  filter: brightness(1.05);
}

.btn-primary:active:not(:disabled) {
  transform: scale(0.99);
}

.btn-primary:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.btn-spinner {
  width: 1.1rem;
  height: 1.1rem;
  border: 2px solid rgba(26, 29, 36, 0.25);
  border-top-color: var(--color-accent-text);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

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

@media (min-width: 480px) {
  .shell {
    max-width: 32rem;
  }
}