/* PART 2 PLACEHOLDER */
    /* ==========
   Root + Reset
   ========== */
:root {
  --bg: #050816;
  --bg-elevated: rgba(15, 23, 42, 0.98);
  --bg-elevated-soft: rgba(15, 23, 42, 0.9);
  --bg-card: rgba(15, 23, 42, 0.96);
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.25);
  --accent-strong: #0ea5e9;
  --accent-alt: #a855f7;
  --accent-alt-soft: rgba(168, 85, 247, 0.25);
  --border-subtle: rgba(148, 163, 184, 0.2);
  --border-strong: rgba(148, 163, 184, 0.5);
  --text: #e5e7eb;
  --text-soft: #9ca3af;
  --text-muted: #6b7280;
  --danger: #f97373;
  --danger-soft: rgba(248, 113, 113, 0.12);
  --success: #4ade80;
  --success-soft: rgba(74, 222, 128, 0.14);
  --warning: #facc15;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 999px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.75);
  --shadow-button: 0 12px 25px rgba(15, 23, 42, 0.9);
  --shadow-glow: 0 0 40px rgba(56, 189, 248, 0.45);
  --transition-fast: 150ms ease-out;
  --transition-med: 220ms ease-out;
  --transition-slow: 320ms ease;
}

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

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #0b1120 0, #020617 40%, #020617 100%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Remove number spinners in some browsers */
input[type="number"] {
  -moz-appearance: textfield;
}
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

button {
  font-family: inherit;
}

/* ==========
   Layout Shell
   ========== */
.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

/* Subtle animated background orbs */
.app-shell::before,
.app-shell::after {
  content: "";
  position: fixed;
  inset: auto;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.6;
  z-index: -1;
  pointer-events: none;
}

.app-shell::before {
  bottom: -180px;
  left: -140px;
  background: radial-gradient(circle, #0ea5e9 0, transparent 70%);
  animation: orbDrift1 24s ease-in-out infinite alternate;
}

.app-shell::after {
  top: -160px;
  right: -120px;
  background: radial-gradient(circle, #a855f7 0, transparent 70%);
  animation: orbDrift2 26s ease-in-out infinite alternate;
}

@keyframes orbDrift1 {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(80px, -40px, 0);
  }
}

@keyframes orbDrift2 {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(-60px, 60px, 0);
  }
}

/* Header & Footer */
.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(24px);
  background: linear-gradient(
      to bottom,
      rgba(15, 23, 42, 0.95),
      rgba(15, 23, 42, 0.75),
      transparent
    );
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
  padding: 0.85rem 1.75rem;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 16px;
  background: radial-gradient(circle at 20% 20%, #38bdf8, #0f172a);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
}

.logo-pill {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #e0f2fe;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #e5e7eb;
}

.logo-subtitle {
  font-size: 0.78rem;
  color: var(--text-soft);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-pill {
  font-size: 0.78rem;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.35);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.1), rgba(15, 23, 42, 0.9));
}

.header-pill--mode {
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), rgba(15, 23, 42, 0.9));
  border-color: rgba(56, 189, 248, 0.6);
  color: #e0f2fe;
}

.header-pill--timer {
  background: radial-gradient(circle at top right, rgba(148, 163, 184, 0.14), rgba(15, 23, 42, 0.96));
}

.timer-icon {
  font-size: 0.9rem;
  opacity: 0.9;
}

.app-main {
  flex: 1;
  padding: 1.5rem 1.5rem 1.2rem;
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
}

.app-footer {
  padding: 0.7rem 1.5rem 1rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(15, 23, 42, 0.9);
  background: radial-gradient(circle at bottom, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.7));
}

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

/* ==========
   Page Transitions
   ========== */
.page {
  display: none;
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity var(--transition-med),
    transform var(--transition-med);
}

.page--active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.page-inner {
  animation: fadeInUp 360ms ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========
   Cards & Surfaces
   ========== */
.card {
  background: radial-gradient(circle at top left, rgba(148, 163, 184, 0.1), rgba(15, 23, 42, 0.96));
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  position: relative;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.12), transparent 55%);
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}

.card:hover::before {
  opacity: 1;
}

.card-header {
  padding: 1.15rem 1.35rem 0.65rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.13);
}

.card-body {
  padding: 1rem 1.35rem 1.25rem;
}

.card-footer {
  padding: 0.8rem 1.35rem 0.95rem;
  border-top: 1px solid rgba(148, 163, 184, 0.12);
}

/* ==========
   Intro / Hero Layout
   ========== */
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(260px, 1.2fr);
  gap: 1.25rem;
}

.hero-title {
  font-size: 1.4rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 0.45rem;
}

.hero-subtitle {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.9rem 0 1.05rem;
}

.tag-pill {
  font-size: 0.7rem;
  border-radius: var(--radius-pill);
  padding: 0.22rem 0.55rem;
  border: 1px dashed rgba(148, 163, 184, 0.6);
  color: var(--text-soft);
  background: rgba(15, 23, 42, 0.92);
}

.tag-pill--outline {
  border-style: solid;
  border-color: rgba(148, 163, 184, 0.8);
}

.hero-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.hero-option-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.field-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.hero-actions {
  margin-top: 1.2rem;
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

/* Sidebar on intro */
.hero-side {
  backdrop-filter: blur(20px);
}

.side-title {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-soft);
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0.4rem 0 0;
  font-size: 0.85rem;
  color: var(--text-soft);
}

.feature-list li {
  position: relative;
  padding-left: 1.15rem;
  margin-bottom: 0.35rem;
}

.feature-list li::before {
  content: "•";
  position: absolute;
  left: 0.2rem;
  top: 0;
  color: var(--accent);
}

/* ==========
   Buttons
   ========== */
.btn {
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.85rem;
  padding: 0.45rem 0.9rem;
  background: transparent;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    transform 80ms ease-out,
    box-shadow var(--transition-fast);
  box-shadow: var(--shadow-button);
  white-space: nowrap;
}

.btn-lg {
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
}

.btn-full {
  width: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  border-color: rgba(56, 189, 248, 0.9);
  color: #0f172a;
  font-weight: 600;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

.btn-secondary {
  background: radial-gradient(circle at top left, rgba(148, 163, 184, 0.28), rgba(15, 23, 42, 0.98));
  border-color: rgba(148, 163, 184, 0.65);
}

.btn-secondary:hover {
  background: radial-gradient(circle at top left, rgba(148, 163, 184, 0.4), rgba(15, 23, 42, 0.98));
}

.btn-ghost {
  background: rgba(15, 23, 42, 0.7);
  border-color: rgba(148, 163, 184, 0.5);
}

.btn-ghost:hover {
  background: rgba(15, 23, 42, 0.9);
}

.btn-danger-outline {
  border-color: rgba(248, 113, 113, 0.8);
  color: var(--danger);
  background: var(--danger-soft);
}

.btn-danger-outline:hover {
  background: rgba(248, 113, 113, 0.2);
}

.btn:disabled,
.btn[disabled] {
  opacity: 0.5;
  cursor: default;
  box-shadow: none;
  transform: none;
}

.btn-icon-left .btn-icon {
  margin-right: 0.15rem;
}

.btn-icon {
  font-size: 0.9rem;
}

.btn:active {
  transform: translateY(1px) scale(0.99);
  box-shadow: none;
}

/* ==========
   Pill Toggles
   ========== */
.pill-toggle-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.pill-toggle {
  border-radius: var(--radius-pill);
  padding: 0.34rem 0.75rem;
  font-size: 0.78rem;
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(15, 23, 42, 0.95);
  color: var(--text-soft);
  cursor: pointer;
  white-space: nowrap;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform 80ms ease-out;
}

.pill-toggle:hover {
  border-color: rgba(148, 163, 184, 0.9);
  color: var(--text);
}

.pill-toggle--active {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.18), rgba(168, 85, 247, 0.15));
  border-color: rgba(56, 189, 248, 0.85);
  color: #e0f2fe;
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.4);
}

/* ==========
   Quiz Layout
   ========== */
.quiz-layout {
  display: grid;
  grid-template-columns: minmax(0, 2.1fr) minmax(260px, 1.1fr);
  gap: 1.25rem;
}

.quiz-main {
  min-height: 420px;
}

.quiz-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.quiz-meta-left {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.quiz-progress {
  font-size: 0.86rem;
  font-weight: 500;
}

.quiz-submeta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.quiz-meta-right {
  display: flex;
  align-items: center;
}

.quiz-timer-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.32rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.98));
  font-size: 0.78rem;
  color: var(--text-soft);
}

.quiz-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.quiz-question-stem {
  font-size: 0.98rem;
  line-height: 1.5;
}

.quiz-question-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.quiz-choices {
  margin-top: 0.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* Answer choices */
.choice-option {
  position: relative;
  display: flex;
  gap: 0.75rem;
  padding: 0.55rem 0.7rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.9));
  cursor: pointer;
  font-size: 0.9rem;
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast),
    transform 80ms ease-out;
}

.choice-option:hover {
  border-color: rgba(56, 189, 248, 0.7);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.35);
  transform: translateY(-1px);
}

.choice-option.disabled {
  cursor: default;
  opacity: 0.9;
  box-shadow: none;
  transform: none;
}

.choice-key {
  width: 24px;
  height: 24px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  color: var(--text-soft);
  flex-shrink: 0;
  background: rgba(15, 23, 42, 0.98);
}

.choice-label {
  flex: 1;
}

.choice-label-main {
  line-height: 1.45;
}

.choice-label-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* Selected state, correctness states (for JS to toggle) */
.choice-option--selected {
  border-color: rgba(56, 189, 248, 0.9);
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.2), rgba(15, 23, 42, 0.98));
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.6);
}

.choice-option--correct {
  border-color: rgba(74, 222, 128, 0.9);
  background: radial-gradient(circle at top left, rgba(74, 222, 128, 0.18), rgba(15, 23, 42, 0.98));
  box-shadow: 0 0 0 1px rgba(74, 222, 128, 0.7);
}

.choice-option--incorrect {
  border-color: rgba(248, 113, 113, 0.9);
  background: radial-gradient(circle at top left, rgba(248, 113, 113, 0.18), rgba(15, 23, 42, 0.98));
  box-shadow: 0 0 0 1px rgba(248, 113, 113, 0.7);
}

.choice-option--correct .choice-key {
  border-color: rgba(74, 222, 128, 0.9);
  color: var(--success);
}

.choice-option--incorrect .choice-key {
  border-color: rgba(248, 113, 113, 0.9);
  color: var(--danger);
}

/* Feedback panel */
.quiz-feedback {
  margin-top: 0.6rem;
  padding: 0.7rem 0.8rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.98));
  font-size: 0.86rem;
}

.quiz-feedback-title {
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.quiz-feedback-correct {
  color: var(--success);
}

.quiz-feedback-incorrect {
  color: var(--danger);
}

.quiz-feedback-text {
  color: var(--text-soft);
  line-height: 1.5;
}

/* Quiz footer */
.quiz-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.quiz-footer-center {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.quiz-footer-left,
.quiz-footer-right {
  display: flex;
  align-items: center;
}

/* Sidebar */
.quiz-side {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.quiz-side-card {
  font-size: 0.85rem;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.35rem;
}

.stat-label {
  color: var(--text-muted);
}

.stat-value {
  font-weight: 600;
}

.divider {
  margin: 0.7rem 0 0.55rem;
  border-bottom: 1px dashed rgba(148, 163, 184, 0.4);
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(32px, 1fr));
  gap: 0.3rem;
}

/* Question nav pills */
.nav-pill {
  padding: 0.25rem 0;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  font-size: 0.7rem;
  text-align: center;
  cursor: pointer;
  background: rgba(15, 23, 42, 0.96);
  color: var(--text-soft);
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    transform 80ms ease-out;
}

.nav-pill:hover {
  border-color: rgba(148, 163, 184, 0.9);
  color: var(--text);
  transform: translateY(-1px);
}

.nav-pill--current {
  border-color: rgba(56, 189, 248, 0.9);
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.25), rgba(15, 23, 42, 0.98));
  color: #e0f2fe;
}

.nav-pill--correct {
  border-color: rgba(74, 222, 128, 0.9);
  background: radial-gradient(circle at top left, rgba(74, 222, 128, 0.18), rgba(15, 23, 42, 0.98));
  color: var(--success);
}

.nav-pill--incorrect {
  border-color: rgba(248, 113, 113, 0.9);
  background: radial-gradient(circle at top left, rgba(248, 113, 113, 0.18), rgba(15, 23, 42, 0.98));
  color: var(--danger);
}

.nav-pill--flagged::after {
  content: "⚑";
  font-size: 0.7rem;
  margin-left: 0.1rem;
}

/* Mode & timer in sidebar */
.mode-indicator-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.35rem;
}

.stat-pill {
  font-size: 0.75rem;
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.9);
}

/* ==========
   Results Page
   ========== */
.results-layout {
  display: grid;
  grid-template-columns: minmax(0, 2.1fr) minmax(260px, 1.1fr);
  gap: 1.25rem;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.1rem;
}

.results-stat {
  border-radius: 18px;
  padding: 0.55rem 0.7rem;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.9));
  text-align: left;
}

.results-stat--score {
  grid-row: span 2;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.22), rgba(15, 23, 42, 0.98));
  border-color: rgba(56, 189, 248, 0.8);
}

.results-label {
  font-size: 0.76rem;
  color: var(--text-muted);
}

.results-value {
  margin-top: 0.2rem;
  font-size: 1.2rem;
  font-weight: 600;
}

.results-stat--score .results-value {
  font-size: 1.6rem;
}

.results-subtext {
  margin-top: 0.15rem;
  font-size: 0.78rem;
  color: var(--text-soft);
}

.results-breakdown {
  margin-top: 0.7rem;
}

#results-objective-breakdown {
  margin-top: 0.45rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.8rem;
}

/* Objective breakdown rows */
.objective-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.32rem 0.5rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.objective-label {
  color: var(--text-soft);
}

.objective-score {
  font-weight: 500;
}

.objective-score--good {
  color: var(--success);
}

.objective-score--warn {
  color: var(--warning);
}

.objective-score--bad {
  color: var(--danger);
}

.results-actions {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* History + export sidebar */
.results-side {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.history-item {
  padding: 0.4rem 0.5rem;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  font-size: 0.78rem;
  margin-bottom: 0.3rem;
  cursor: pointer;
  background: rgba(15, 23, 42, 0.95);
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    transform 80ms ease-out;
}

.history-item:hover {
  background: rgba(15, 23, 42, 0.98);
  border-color: rgba(148, 163, 184, 0.8);
  transform: translateY(-1px);
}

.history-item-title {
  font-weight: 500;
}

.history-item-meta {
  color: var(--text-muted);
  margin-top: 0.12rem;
}

.export-textarea {
  width: 100%;
  min-height: 140px;
  background: rgba(15, 23, 42, 0.97);
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  padding: 0.55rem 0.6rem;
  font-size: 0.78rem;
  color: var(--text-soft);
  resize: vertical;
}

/* ==========
   Utility & Helpers
   ========== */
[data-route="intro"] .card {
  animation: subtleFloatIn 260ms ease-out;
}

@keyframes subtleFloatIn {
  from {
    opacity: 0;
    transform: translateY(6px) scale(0.99);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Hide [hidden] elements */
[hidden] {
  display: none !important;
}

/* Scrollbars */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(148, 163, 184, 0.7) rgba(15, 23, 42, 0.9);
}

*::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

*::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.9);
}

*::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.8);
  border-radius: 999px;
}

/* ==========
   Responsive
   ========== */
@media (max-width: 1024px) {
  .app-main {
    padding-inline: 1rem;
  }

  .hero-grid,
  .quiz-layout,
  .results-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-side,
  .results-side {
    order: -1;
  }

  .card {
    border-radius: 20px;
  }
}

@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
    padding-inline: 1rem;
  }

  .header-right {
    align-self: stretch;
    justify-content: space-between;
  }

  .app-main {
    padding-inline: 0.75rem;
  }

  .card-header,
  .card-body,
  .card-footer {
    padding-inline: 1rem;
  }

  .hero-options {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.15rem;
  }

  .quiz-card-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .quiz-footer-center {
    width: 100%;
    justify-content: space-between;
  }

  .quiz-footer-left,
  .quiz-footer-right {
    width: 100%;
    justify-content: space-between;
  }

  .results-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .app-main {
    padding-inline: 0.6rem;
    padding-top: 1.1rem;
  }

  .logo-title {
    font-size: 0.85rem;
  }

  .logo-subtitle {
    font-size: 0.72rem;
  }

  .hero-title {
    font-size: 1.25rem;
  }

  .btn,
  .pill-toggle {
    font-size: 0.8rem;
  }
}