/* UX polish — clearer hierarchy, color cues, light motion */

@keyframes tt-fade-up {
  from {
    opacity: 0;
    transform: translateY(0.5rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes tt-soft-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--tt-accent) 0%, transparent);
  }
  50% {
    box-shadow: 0 0 0 6px color-mix(in srgb, var(--tt-accent) 12%, transparent);
  }
}

@keyframes tt-check-pop {
  0% {
    transform: scale(0.85);
  }
  60% {
    transform: scale(1.06);
  }
  100% {
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .tt-step-pane--enter,
  .tt-file-card,
  .tt-metric-card,
  .tt-step-tip,
  .tt-stepper__indicator,
  .tt-btn-primary,
  .tt-btn-secondary,
  .tt-btn-success,
  .tt-btn-violet,
  .tt-btn-sky {
    animation: none !important;
    transition: none !important;
  }
}

/* Richer action buttons */
.tt-btn-primary {
  background: linear-gradient(180deg, color-mix(in srgb, var(--tt-accent) 92%, #fff) 0%, var(--tt-accent) 100%);
  box-shadow:
    0 1px 2px rgb(15 23 42 / 0.08),
    0 4px 12px -4px color-mix(in srgb, var(--tt-accent) 45%, transparent);
}

.tt-btn-primary:hover:not(:disabled) {
  background: linear-gradient(180deg, var(--tt-accent) 0%, var(--tt-accent-hover) 100%);
  transform: translateY(-1px);
  box-shadow:
    0 2px 4px rgb(15 23 42 / 0.1),
    0 8px 16px -6px color-mix(in srgb, var(--tt-accent) 50%, transparent);
}

.tt-btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.tt-btn-success {
  background: linear-gradient(180deg, color-mix(in srgb, var(--tt-success) 88%, #fff) 0%, var(--tt-success) 100%);
  box-shadow:
    0 1px 2px rgb(15 23 42 / 0.06),
    0 4px 12px -4px color-mix(in srgb, var(--tt-success) 40%, transparent);
}

.tt-btn-success:hover:not(:disabled) {
  background: linear-gradient(180deg, var(--tt-success) 0%, var(--tt-success-hover) 100%);
  transform: translateY(-1px);
}

.tt-btn-secondary {
  border-color: color-mix(in srgb, var(--tt-accent) 22%, var(--tt-border));
  background: color-mix(in srgb, var(--tt-accent) 4%, var(--tt-card));
  color: var(--tt-accent-muted-fg);
}

.tt-btn-secondary:hover:not(:disabled) {
  background: color-mix(in srgb, var(--tt-accent) 10%, var(--tt-card));
  border-color: color-mix(in srgb, var(--tt-accent) 40%, var(--tt-border));
  color: var(--tt-accent);
  transform: translateY(-1px);
}

.tt-btn-sky {
  border: 1px solid color-mix(in srgb, #0284c7 35%, var(--tt-border));
  background: color-mix(in srgb, #0284c7 10%, var(--tt-card));
  color: #0369a1;
}

.tt-btn-sky:hover:not(:disabled) {
  background: color-mix(in srgb, #0284c7 18%, var(--tt-card));
  border-color: #0284c7;
  color: #0c4a6e;
  transform: translateY(-1px);
}

.tt-btn-violet {
  border: 1px solid color-mix(in srgb, #7c3aed 35%, var(--tt-border));
  background: color-mix(in srgb, #7c3aed 10%, var(--tt-card));
  color: #6d28d9;
}

.tt-btn-violet:hover:not(:disabled) {
  background: color-mix(in srgb, #7c3aed 18%, var(--tt-card));
  border-color: #7c3aed;
  color: #5b21b6;
  transform: translateY(-1px);
}

[data-theme="dark"] .tt-btn-sky {
  color: #7dd3fc;
}

[data-theme="dark"] .tt-btn-violet {
  color: #c4b5fd;
}

.tt-btn-primary,
.tt-btn-secondary,
.tt-btn-success,
.tt-btn-sky,
.tt-btn-violet,
.tt-btn-ghost {
  transition:
    background 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease,
    box-shadow 0.18s ease,
    transform 0.18s ease,
    opacity 0.15s ease;
}

/* Step tips — readable guidance */
.tt-step-tip {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin: 0 0 1.25rem;
  padding: 0.875rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid color-mix(in srgb, var(--tt-accent) 22%, var(--tt-border));
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--tt-accent) 8%, var(--tt-card)) 0%,
    color-mix(in srgb, #0284c7 5%, var(--tt-card)) 100%
  );
  animation: tt-fade-up 0.35s ease both;
}

.tt-step-tip__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  border-radius: 999px;
  background: var(--tt-accent);
  color: #fff;
  font-size: 0.875rem;
}

.tt-step-tip__body {
  min-width: 0;
}

.tt-step-tip__title {
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--tt-heading);
}

.tt-step-tip__text {
  margin: 0.2rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--tt-cell);
}

/* Step panel & heading icon badge */
.tt-step-panel {
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--tt-border) 85%, transparent);
  box-shadow:
    0 1px 2px rgb(15 23 42 / 0.04),
    0 12px 32px -16px rgb(15 23 42 / 0.14);
}

.tt-step-panel__heading-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.65rem;
  background: color-mix(in srgb, var(--tt-accent) 12%, var(--tt-card));
  color: var(--tt-accent);
}

.tt-step-panel__footer {
  background: color-mix(in srgb, var(--tt-elevated) 80%, var(--tt-card));
}

.tt-step-pane--enter {
  animation: tt-fade-up 0.32s ease both;
}

/* Stepper readability */
.tt-stepper__title {
  background: linear-gradient(90deg, var(--tt-heading), color-mix(in srgb, var(--tt-accent) 70%, var(--tt-heading)));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tt-stepper__item--current .tt-stepper__label {
  color: var(--tt-accent);
}

.tt-stepper__item--complete .tt-stepper__indicator {
  animation: tt-check-pop 0.35s ease both;
}

.tt-stepper__item--current .tt-stepper__indicator {
  animation: tt-soft-pulse 2.4s ease-in-out infinite;
}

/* File cards by role */
.tt-file-card {
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
  animation: tt-fade-up 0.4s ease both;
}

.tt-file-card:nth-child(2) {
  animation-delay: 0.04s;
}
.tt-file-card:nth-child(3) {
  animation-delay: 0.08s;
}
.tt-file-card:nth-child(4) {
  animation-delay: 0.12s;
}

.tt-file-card:hover {
  transform: translateY(-2px);
  box-shadow:
    0 4px 6px rgb(15 23 42 / 0.04),
    0 14px 28px -12px rgb(15 23 42 / 0.16);
}

.tt-file-card--baseline {
  border-color: color-mix(in srgb, var(--tt-accent) 28%, var(--tt-border));
}

.tt-file-card--baseline .tt-rpt-card-eyebrow {
  color: var(--tt-accent);
}

.tt-file-card--baseline .tt-rpt-funding-icon {
  background: color-mix(in srgb, var(--tt-accent) 12%, var(--tt-card));
  color: var(--tt-accent);
}

.tt-file-card--comparison {
  border-color: color-mix(in srgb, #7c3aed 26%, var(--tt-border));
}

.tt-file-card--comparison .tt-rpt-card-eyebrow {
  color: #6d28d9;
}

.tt-file-card--comparison .tt-rpt-funding-icon {
  background: color-mix(in srgb, #7c3aed 12%, var(--tt-card));
  color: #7c3aed;
}

[data-theme="dark"] .tt-file-card--comparison .tt-rpt-card-eyebrow,
[data-theme="dark"] .tt-file-card--comparison .tt-rpt-funding-icon {
  color: #c4b5fd;
}

.tt-files-toolbar__hint {
  margin: 0;
  max-width: 36rem;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--tt-cell);
}

.tt-files-toolbar__hint strong {
  color: var(--tt-heading);
  font-weight: 600;
}

/* Metrics with accent rails */
.tt-metric-card {
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tt-metric-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--tt-accent);
}

.tt-metric-card--success::before {
  background: var(--tt-success);
}

.tt-metric-card--warning::before {
  background: var(--tt-warning);
}

.tt-metric-card--violet::before {
  background: #7c3aed;
}

.tt-metric-card--sky::before {
  background: #0284c7;
}

.tt-metric-card:hover {
  transform: translateY(-2px);
  box-shadow:
    0 4px 6px rgb(15 23 42 / 0.04),
    0 12px 24px -10px rgb(15 23 42 / 0.14);
}

/* Key pairs & filters clearer */
.tt-key-pair {
  border-color: color-mix(in srgb, var(--tt-accent) 18%, var(--tt-border));
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--tt-accent) 4%, var(--tt-card)) 0%,
    var(--tt-card) 48%
  );
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.tt-key-pair:hover {
  border-color: color-mix(in srgb, var(--tt-accent) 35%, var(--tt-border));
  box-shadow: 0 4px 14px -8px color-mix(in srgb, var(--tt-accent) 35%, transparent);
}

.tt-key-pair__num {
  background: var(--tt-accent);
  color: #fff;
}

.tt-row-filters {
  border-top-color: color-mix(in srgb, #0284c7 25%, var(--tt-border));
  padding: 0.75rem;
  border-radius: 0.75rem;
  background: color-mix(in srgb, #0284c7 5%, var(--tt-card));
  border: 1px solid color-mix(in srgb, #0284c7 18%, var(--tt-border));
  border-top: 1px solid color-mix(in srgb, #0284c7 18%, var(--tt-border));
}

.tt-row-filters__count {
  font-weight: 600;
  color: #0369a1;
}

[data-theme="dark"] .tt-row-filters__count {
  color: #7dd3fc;
}

/* Options bar */
.tt-options-bar {
  padding: 0.875rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid color-mix(in srgb, var(--tt-border) 85%, transparent);
  background: color-mix(in srgb, var(--tt-elevated) 70%, var(--tt-card));
}

/* Results tabs a bit clearer */
.tt-seg {
  background: color-mix(in srgb, var(--tt-accent) 4%, var(--tt-elevated));
}

.tt-seg__btn--active {
  box-shadow: 0 1px 3px rgb(15 23 42 / 0.08);
  color: var(--tt-accent);
}

/* Empty state softer */
.tt-empty-state__icon {
  color: color-mix(in srgb, var(--tt-accent) 55%, var(--tt-cell));
}