:root {
  --bg:             #F5F0FF;
  --fg:             #1A0533;
  --card:           #FFFFFF;
  --card-fg:        #1A0533;
  --border:         #DDD6FE;
  --input:          #EDE9FE;
  --ring:           #7C3AED;
  --primary:        #6B21A8;
  --primary-fg:     #FFFFFF;
  --secondary:      #F5A623;
  --secondary-fg:   #1A0533;
  --accent:         #7C3AED;
  --accent-fg:      #FFFFFF;
  --muted:          #EDE9FE;
  --muted-fg:       #6B21A8;

  --know-bg:        #DBEAFE; --know-fg:#1E40AF; --know-border:#93C5FD;
  --spot-bg:        #FEF3C7; --spot-fg:#92400E; --spot-border:#FCD34D;
  --choose-bg:      #D1FAE5; --choose-fg:#065F46; --choose-border:#6EE7B7;
  --think-bg:       #EDE0FE; --think-fg:#5B21B6; --think-border:#C4B5FD;

  --correct-bg:     #D1FAE5; --correct-fg:#065F46; --correct-border:#6EE7B7;
  --incorrect-bg:   #FEE2E2; --incorrect-fg:#991B1B; --incorrect-border:#FCA5A5;

  --hero-grad: linear-gradient(160deg, #1A0533 0%, #3B0764 42%, #6B21A8 100%);
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-5: 24px; --space-6: 32px; --space-7: 48px; --space-8: 64px;

  --shadow-card: 0 20px 45px -15px rgba(26,5,51,0.5);
  --shadow-soft: 0 8px 24px -10px rgba(26,5,51,0.18);
}

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

body {
  font-family: var(--font-body);
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
}

h1, h2, h3, h4, p { margin: 0; }
button { font-family: inherit; }

:focus-visible { 
  outline: 3px solid var(--ring); 
  outline-offset: 2px; 
  border-radius: 6px; 
}

/* ==========================================================================
   Full-Width & Theme Structural Overrides
   ========================================================================== */
.abtt-wp-wrap {
  width: 100% !important;
  max-width: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
}

.entry-content .abtt-wp-wrap,
.site-content .abtt-wp-wrap,
.woocommerce-MyAccount-content .abtt-wp-wrap {
  width: 100%;
  margin-left: 0;
  margin-right: 0;
}

/* ==========================================================================
   App Base Layout & Hardware Acceleration Fixes
   ========================================================================== */
.abtt-app {
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  background: var(--hero-grad);
  color: #ffffff;
  /* Hardware Acceleration to eliminate scrolling jitter */
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.abtt-app::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 12% 18%, rgba(245,166,35,0.16), transparent 40%),
    radial-gradient(circle at 88% 82%, rgba(124,58,237,0.35), transparent 45%);
  z-index: 0;
  /* GPU layer optimization */
  transform: translateZ(0);
  will-change: transform;
}

.abtt-screen {
  width: 100%;
  min-height: 100vh;
  display: none;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 1;
  /* Prevent scrolling layout jitter */
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.abtt-screen.is-active { 
  display: flex; 
  animation: abtt-fade .35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes abtt-fade {
  from { opacity: 0; transform: translate3d(0, 10px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

/* ==========================================================================
   Brand Header Bar
   ========================================================================== */
.abtt-brandbar {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-6) var(--space-5) var(--space-4);
}

.abtt-owl {
  width: 56px; 
  height: 56px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--accent), var(--primary));
  display: flex; 
  align-items: center; 
  justify-content: center;
  font-size: 26px;
  margin: 0 auto var(--space-2);
  box-shadow: 0 10px 24px -8px rgba(124,58,237,0.7);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.abtt-brand-title {
  font-size: clamp(22px, 4vw, 28px);
  font-weight: 800;
  color: var(--secondary);
  letter-spacing: -0.02em;
}

.abtt-brand-sub {
  font-size: 14px;
  color: #C9B7EE;
  margin-top: var(--space-1);
}

/* ==========================================================================
   WooCommerce Login Section & Form Overrides
   ========================================================================== */
.abtt-login-page-wrap {
  width: 100%;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-7) var(--space-4);
  position: relative;
  z-index: 1;
}

.abtt-login-card {
  width: 100%;
  max-width: 440px;
  background: rgba(26, 5, 51, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
  color: #ffffff;
  margin: 0 auto;
}

.abtt-login-header {
  text-align: center;
  margin-bottom: var(--space-5);
}

.abtt-login-header h2 {
  font-size: 24px !important;
  font-weight: 800 !important;
  color: var(--secondary) !important;
  margin-bottom: var(--space-2) !important;
  letter-spacing: -0.01em;
}

.abtt-login-header p {
  font-size: 14px !important;
  color: #DCCBF7 !important;
  line-height: 1.45;
}

.abtt-login-card form.woocommerce-form-login,
.abtt-login-card form.login {
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  margin: 0 !important;
  box-shadow: none !important;
}

.abtt-login-card form.woocommerce-form-login p.form-row,
.abtt-login-card form.login p.form-row {
  padding: 0 !important;
  margin-bottom: 16px !important;
  float: none !important;
  width: 100% !important;
}

.abtt-login-card form.woocommerce-form-login label,
.abtt-login-card form.login label {
  color: #E7DBF8 !important;
  font-size: 12px !important;
  font-weight: 700 !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px !important;
  display: block !important;
}

.abtt-login-card form.woocommerce-form-login input.input-text,
.abtt-login-card form.login input.input-text {
  width: 100% !important;
  height: 48px !important;
  padding: 10px 14px !important;
  border-radius: var(--radius-sm) !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  background: rgba(255, 255, 255, 0.08) !important;
  color: #FFFFFF !important;
  font-size: 15px !important;
  box-shadow: none !important;
  transition: all 0.2s ease !important;
}

.abtt-login-card form.woocommerce-form-login input.input-text:focus,
.abtt-login-card form.login input.input-text:focus {
  border-color: var(--secondary) !important;
  background: rgba(255, 255, 255, 0.16) !important;
  outline: none !important;
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.25) !important;
}

.abtt-login-card form.woocommerce-form-login .button,
.abtt-login-card form.login .button,
.abtt-login-card form.woocommerce-form-login button[type="submit"] {
  width: 100% !important;
  height: 48px !important;
  background: linear-gradient(135deg, #FCD34D, var(--secondary)) !important;
  color: #1A0533 !important;
  border: none !important;
  border-radius: var(--radius-full) !important;
  padding: 0 24px !important;
  font-weight: 800 !important;
  font-size: 15px !important;
  letter-spacing: 0.02em;
  box-shadow: 0 10px 24px -8px rgba(245,166,35,0.65) !important;
  cursor: pointer;
  margin-top: 10px !important;
  transition: transform 0.15s ease, filter 0.15s ease !important;
}

.abtt-login-card form.woocommerce-form-login .button:hover,
.abtt-login-card form.login .button:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.abtt-login-card form.woocommerce-form-login .woocommerce-form-login__rememberme,
.abtt-login-card form.login .woocommerce-form-login__rememberme {
  display: flex !important;
  align-items: center;
  gap: 8px;
  color: #DCCBF7 !important;
  font-size: 13px !important;
  text-transform: none !important;
  margin-bottom: 16px !important;
  cursor: pointer;
}

.abtt-login-card form.woocommerce-form-login input[type="checkbox"] {
  accent-color: var(--secondary) !important;
  width: 16px;
  height: 16px;
  margin: 0 !important;
  cursor: pointer;
}

.abtt-login-card form.woocommerce-form-login .woocommerce-LostPassword,
.abtt-login-card form.login .woocommerce-LostPassword {
  text-align: center !important;
  margin-top: 16px !important;
  margin-bottom: 0 !important;
  font-size: 13px !important;
}

.abtt-login-card form.woocommerce-form-login .woocommerce-LostPassword a,
.abtt-login-card form.login .woocommerce-LostPassword a {
  color: var(--secondary) !important;
  text-decoration: underline !important;
  font-weight: 600 !important;
  transition: color 0.15s ease;
}

.abtt-login-card form.woocommerce-form-login .woocommerce-LostPassword a:hover {
  color: #FCD34D !important;
}

/* ==========================================================================
   Dashboard View
   ========================================================================== */
.abtt-dashboard-wrap {
  width: 100%;
  max-width: 980px;
  padding: var(--space-4) var(--space-5) var(--space-8);
}

.abtt-dash-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  backdrop-filter: blur(12px);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
  gap: var(--space-3);
  flex-wrap: wrap;
}

.abtt-user-badge { 
  font-size: 14px; 
  color: #DCCBF7; 
  font-weight: 600; 
}
.abtt-user-badge strong { 
  color: #ffffff; 
  font-weight: 800; 
}

.abtt-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}

.abtt-quiz-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color .2s ease, transform .2s ease, background-color .2s ease;
  /* Prevent scroll stuttering on cards */
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transform: translateZ(0);
}

/* Unlocked Hover State for all Cards */
.abtt-quiz-card:hover {
  border-color: rgba(245,166,35,0.5);
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}

/* Overridden: All cards render unlocked regardless of class */
.abtt-quiz-card.is-locked {
  opacity: 1 !important;
  background: rgba(255,255,255,0.07) !important;
  border-style: solid !important;
  pointer-events: auto !important;
  filter: none !important;
}

.abtt-quiz-card.is-completed {
  border-color: rgba(110,231,183,0.4);
}

.abtt-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.abtt-card-icon { font-size: 24px; }

.abtt-status-pill {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.abtt-status-pill.locked { 
  background: rgba(245,166,35,0.2) !important; 
  color: var(--secondary) !important; 
  border: 1px solid rgba(245,166,35,0.4) !important;
}

.abtt-status-pill.unlocked { 
  background: rgba(245,166,35,0.2); 
  color: var(--secondary); 
  border: 1px solid rgba(245,166,35,0.4); 
}

.abtt-status-pill.passed { 
  background: var(--correct-bg); 
  color: var(--correct-fg); 
}

.abtt-card-title { 
  font-size: 16px; 
  font-weight: 800; 
  color: #ffffff; 
  margin-bottom: 4px; 
}

.abtt-card-desc { 
  font-size: 12.5px; 
  color: #C9B7EE; 
  margin-bottom: var(--space-4); 
  flex-grow: 1; 
  line-height: 1.45;
}

.abtt-card-result {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255,255,255,0.12);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 700;
}
.abtt-card-result .score-good { color: #6EE7B7; }
.abtt-card-result .score-retry { color: #FCA5A5; }

/* Grand Challenge Card */
.abtt-grand-card {
  background: linear-gradient(145deg, rgba(124,58,237,0.25), rgba(245,166,35,0.18));
  border: 2px solid rgba(245,166,35,0.4);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  margin-bottom: var(--space-6);
  backdrop-filter: blur(10px);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transform: translateZ(0);
}

/* Overridden: Grand Card is always unlocked */
.abtt-grand-card.is-locked {
  opacity: 1 !important;
  border-style: solid !important;
  border-color: rgba(245,166,35,0.4) !important;
  background: linear-gradient(145deg, rgba(124,58,237,0.25), rgba(245,166,35,0.18)) !important;
  pointer-events: auto !important;
}

.abtt-grand-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: var(--space-2);
}

.abtt-grand-title { 
  font-size: clamp(20px, 4vw, 26px); 
  font-weight: 800; 
  color: #ffffff; 
  margin-bottom: var(--space-2); 
}

.abtt-grand-desc { 
  font-size: 14px; 
  color: #DCCBF7; 
  max-width: 580px; 
  margin: 0 auto var(--space-5); 
  line-height: 1.5;
}

/* ==========================================================================
   Quiz Runner View
   ========================================================================== */
.abtt-quiz-topbar {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  gap: var(--space-4);
}

.abtt-progress-track {
  width: 100%; 
  height: 6px;
  background: rgba(255,255,255,0.12);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.abtt-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--secondary), #FCD34D);
  width: 0%;
  transition: width .3s ease;
  border-radius: var(--radius-full);
}

.abtt-quiz-body {
  width: 100%;
  max-width: 640px;
  padding: var(--space-5) var(--space-4) var(--space-8);
  flex: 1;
  /* GPU acceleration prevents flickering during option selection */
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.abtt-book-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--secondary);
  background: rgba(245,166,35,0.15);
  border: 1px solid rgba(245,166,35,0.3);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}

.abtt-q-card {
  background: var(--card);
  color: var(--card-fg);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  font-size: clamp(16px, 2.5vw, 19px);
  font-weight: 700;
  line-height: 1.4;
  box-shadow: var(--shadow-soft);
  margin: var(--space-2) 0 var(--space-4);
}

.abtt-options { 
  display: flex; 
  flex-direction: column; 
  gap: 10px; 
  margin-bottom: var(--space-4); 
}

.abtt-option {
  display: flex; 
  align-items: center; 
  gap: 12px; 
  width: 100%; 
  text-align: left;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  color: #F3EBFF;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 15px; 
  font-weight: 600; 
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, transform .1s ease;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.abtt-option:hover:not(:disabled) { 
  background: rgba(255,255,255,0.16); 
  border-color: rgba(255,255,255,0.3);
}

.abtt-option:disabled { cursor: default; }

.abtt-opt-letter {
  width: 28px; 
  height: 28px; 
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.15);
  display: flex; 
  align-items: center; 
  justify-content: center;
  font-size: 13px; 
  font-weight: 800; 
  flex-shrink: 0;
}

.abtt-option.correct { 
  background: var(--correct-bg); 
  border-color: var(--correct-border); 
  color: var(--correct-fg); 
}
.abtt-option.correct .abtt-opt-letter { 
  background: #ffffff; 
  color: var(--correct-fg); 
}

.abtt-option.incorrect { 
  background: var(--incorrect-bg); 
  border-color: var(--incorrect-border); 
  color: var(--incorrect-fg); 
}
.abtt-option.incorrect .abtt-opt-letter { 
  background: #ffffff; 
  color: var(--incorrect-fg); 
}

.abtt-option.dim { opacity: 0.4; }

.abtt-feedback {
  display: flex; 
  align-items: center; 
  gap: 10px;
  padding: 12px 16px; 
  border-radius: var(--radius-sm);
  font-weight: 700; 
  font-size: 14px; 
  margin-bottom: var(--space-3);
  /* Reserved height prevents layout jump during option rendering */
  min-height: 48px;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
.abtt-feedback.good { background: var(--correct-bg); color: var(--correct-fg); }
.abtt-feedback.bad { background: var(--incorrect-bg); color: var(--incorrect-fg); }

.abtt-insight {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: var(--radius-md);
  padding: var(--space-4); 
  margin-bottom: var(--space-4);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
.abtt-insight-title { 
  font-weight: 800; 
  font-size: 13.5px; 
  color: var(--secondary); 
  margin-bottom: 4px; 
}
.abtt-insight-body { 
  font-size: 13.5px; 
  color: #E7DBF8; 
  line-height: 1.5; 
}

/* Submeter Grid & Certificate Box */
.abtt-submeter-grid {
  display: grid; 
  grid-template-columns: 1fr 1fr; 
  gap: 12px; 
  margin: var(--space-4) 0;
}

.abtt-submeter {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: var(--radius-sm);
  padding: 12px; 
  text-align: left;
}

.abtt-submeter-top { 
  display: flex; 
  justify-content: space-between; 
  font-size: 12px; 
  font-weight: 700; 
  margin-bottom: 6px; 
}

.abtt-dots { display: flex; gap: 4px; flex-wrap: wrap; }
.abtt-dot { 
  width: 8px; 
  height: 8px; 
  border-radius: 50%; 
  background: rgba(255,255,255,0.2); 
}
.abtt-dot.filled.know { background: #60A5FA; }
.abtt-dot.filled.spot { background: #FBBF24; }
.abtt-dot.filled.choose { background: #34D399; }
.abtt-dot.filled.think { background: #A78BFA; }

.abtt-cert-box {
  border: 2px dashed rgba(245,166,35,0.5);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: rgba(245,166,35,0.06);
  margin-top: var(--space-4);
}

/* Utilities */
.abtt-wp-error {
  padding: 16px 20px;
  background: #FEE2E2;
  color: #991B1B;
  border-radius: var(--radius-sm);
  margin: 15px 0;
  font-weight: 600;
  font-size: 14px;
}

.abtt-hidden { display: none !important; }

/* Responsive Adjustments */
@media (max-width: 600px) {
  .abtt-submeter-grid { grid-template-columns: 1fr; }
  .abtt-dash-header { flex-direction: column; align-items: flex-start; }
  .abtt-login-card { padding: var(--space-5) var(--space-4); }
}