/* Reset, typography and the primitives every screen shares: glass, buttons, icons. */

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

html {
  -webkit-text-size-adjust: 100%;
  background: var(--ivory);
  scroll-padding-top: 88px;
}

body {
  min-height: 100dvh;
  margin: 0;
  color: var(--ink);
  font: 400 var(--text-md) / 1.5 var(--font-sans);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1,
h2,
p {
  margin: 0;
}

h1,
h2 {
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

small {
  font-size: var(--text-xs);
}

a {
  color: inherit;
}

button,
input {
  color: inherit;
  font: inherit;
}

button,
a,
label,
input {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--lime);
  color: var(--navy);
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 2px;
  box-shadow: 0 0 0 2px var(--ivory);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: -80px;
  left: 16px;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  background: var(--navy);
  color: var(--on-navy);
  font-weight: 600;
  text-decoration: none;
  transition: top var(--fast) var(--ease);
}

.skip-link:focus {
  top: 12px;
}

/* Icons */

.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  flex: none;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon--small {
  width: 16px;
  height: 16px;
}

.solid {
  fill: currentColor;
  stroke: none;
}

.credit-amount {
  display: inline-flex;
  align-items: center;
  gap: 1px;
  font-variant-numeric: tabular-nums;
}

/* Glass: frosted fill, a light rim that catches the corners, and soft lift */

.glass {
  position: relative;
  border-radius: var(--radius-card);
  background: var(--glass-fill);
  box-shadow: var(--shadow-panel), inset 0 1px 0 var(--glass-highlight);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
}

.glass::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--glass-edge);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  pointer-events: none;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--tap);
  padding: 0 18px;
  border: 0;
  border-radius: var(--radius-full);
  background: none;
  font-size: var(--text-md);
  font-weight: 600;
  letter-spacing: -0.005em;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background-color var(--fast) var(--ease),
    box-shadow var(--fast) var(--ease),
    transform var(--fast) var(--ease);
}

.btn:active:not(:disabled) {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.5;
}

.btn--primary {
  background: var(--navy);
  color: var(--on-navy);
  box-shadow: var(--shadow-soft);
}

.btn--primary:hover:not(:disabled) {
  background: #0a3350;
}

.btn--glass {
  background: var(--glass-fill-strong);
  box-shadow: var(--shadow-soft), inset 0 0 0 1px var(--glass-highlight);
}

.btn--glass:hover:not(:disabled) {
  background: #ffffff;
}

.btn--ghost {
  color: var(--ink);
}

.btn--ghost:hover:not(:disabled) {
  background: rgb(255 255 255 / 0.6);
}

.btn--icon {
  width: var(--tap);
  padding: 0;
}

.btn--block {
  width: 100%;
}

/* Skeletons: shown only while real data is on its way */

.skeleton {
  display: block;
  height: 14px;
  border-radius: var(--radius-sm);
  background:
    linear-gradient(100deg, transparent 30%, rgb(255 255 255 / 0.7) 50%, transparent 70%) 0 0 / 220% 100%,
    rgb(6 38 59 / 0.08);
  animation: shimmer 1.5s linear infinite;
}

@keyframes shimmer {
  from { background-position: 120% 0, 0 0; }
  to { background-position: -120% 0, 0 0; }
}

/* Entrances */

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
}

@keyframes swap {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
}

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

@media (forced-colors: active) {
  .glass,
  .btn,
  .dropzone,
  .switch {
    border: 1px solid CanvasText;
  }

  .switch::before {
    background: CanvasText;
  }
}