/* CSS Design System for Standalone Psychomotor Vigilance Task (PVT-B) */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&family=Space+Grotesk:wght@500;700&display=swap');

:root {
  /* HSL Color System - Dark Mode Core (Default) */
  --bg-base-h: 222;
  --bg-base-s: 47%;
  --bg-base-l: 6%;
  
  --bg-gradient: linear-gradient(135deg, hsl(222, 47%, 6%), hsl(244, 38%, 9%));
  --card-bg: hsla(222, 35%, 12%, 0.65);
  --card-border: hsla(222, 20%, 25%, 0.3);
  --card-shadow: 0 16px 40px -8px rgba(0, 0, 0, 0.6), 0 0 1px 1px hsla(0, 0%, 100%, 0.05) inset;
  
  --text-primary: hsl(210, 40%, 96%);
  --text-secondary: hsl(215, 20%, 78%);
  --text-muted: hsl(215, 12%, 56%);
  
  /* Vigilance Neon Color Accents */
  --brand-primary: hsl(265, 88%, 68%);      /* Electric Twilight / Main Theme */
  --brand-primary-rgb: 167, 102, 255;
  --brand-secondary: hsl(280, 80%, 55%);
  --brand-hover: hsl(265, 95%, 74%);
  --brand-glow: rgba(167, 102, 255, 0.22);
  
  --success: hsl(150, 84%, 44%);          /* Optimal Speed Neon Green */
  --success-glow: rgba(20, 214, 136, 0.25);
  --warning: hsl(38, 96%, 52%);            /* Sluggish / Alert Warning Amber */
  --warning-glow: rgba(244, 160, 26, 0.25);
  --danger: hsl(350, 84%, 60%);            /* Stimulus Trigger / Attention Lapse Crimson */
  --danger-glow: rgba(239, 68, 68, 0.35);
  
  --purple: hsl(275, 80%, 65%);
  
  /* Structural Tokens */
  --border-radius-lg: 24px;
  --border-radius-md: 16px;
  --border-radius-sm: 8px;
  --transition-bezier: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1100px;
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-base-h: 215;
  --bg-base-s: 30%;
  --bg-base-l: 95%;
  
  --bg-gradient: linear-gradient(135deg, hsl(215, 30%, 95%), hsl(220, 25%, 90%));
  --card-bg: hsla(215, 30%, 100%, 0.85);
  --card-border: hsla(215, 20%, 80%, 0.45);
  --card-shadow: 0 16px 36px -12px rgba(90, 100, 130, 0.15), 0 0 1px 1px hsla(0, 0%, 100%, 0.85) inset;
  
  --text-primary: hsl(222, 40%, 12%);
  --text-secondary: hsl(218, 20%, 35%);
  --text-muted: hsl(218, 15%, 55%);
  
  --brand-glow: rgba(167, 102, 255, 0.12);
}

/* Global Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', sans-serif;
  color: var(--text-primary);
  background-color: hsl(var(--bg-base-h), var(--bg-base-s), var(--bg-base-l));
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background: var(--bg-gradient);
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

p {
  line-height: 1.6;
  color: var(--text-secondary);
}

/* Base Layout Wrapper */
.app-container {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Premium Navigation Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--card-border);
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  cursor: pointer;
  text-decoration: none;
}

.company-logo {
  width: 280px;
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--border-radius-sm);
  background-color: #ffffff;
  padding: 8px 14px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: var(--transition-bezier);
}

@media (max-width: 480px) {
  .company-logo {
    width: 200px;
    padding: 6px 10px;
  }
}

.logo-wrapper:hover .company-logo {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

.theme-toggle-btn {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  box-shadow: var(--card-shadow);
  transition: var(--transition-bezier);
}

.theme-toggle-btn:hover {
  transform: translateY(-2px);
  border-color: var(--brand-primary);
  box-shadow: 0 0 12px var(--brand-glow);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.theme-toggle-btn:hover svg {
  transform: rotate(30deg);
}

.hidden {
  display: none !important;
}

/* Glassmorphic Base Cards */
.glass-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
  padding: 2.5rem;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  transition: var(--transition-bezier);
  position: relative;
  overflow: hidden;
}

/* Badge Visuals */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: hsla(265, 88%, 68%, 0.1);
  border: 1px solid hsla(265, 88%, 68%, 0.2);
  color: var(--brand-primary);
  font-family: 'Outfit', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  align-self: flex-start;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Buttons System */
.primary-btn {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  color: hsl(222, 47%, 6%);
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  padding: 1.1rem 2.2rem;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  box-shadow: 0 8px 24px var(--brand-glow);
  transition: var(--transition-bezier);
  position: relative;
  overflow: hidden;
}

.primary-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 200%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transform: skewX(-20deg);
  transition: 0.8s ease;
}

.primary-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(167, 102, 255, 0.4);
}

.primary-btn:hover::before {
  left: 100%;
}

.secondary-btn {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  padding: 1rem 1.8rem;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  box-shadow: var(--card-shadow);
  transition: var(--transition-bezier);
}

.secondary-btn:hover {
  transform: translateY(-3px);
  border-color: var(--text-secondary);
  background: hsla(222, 20%, 25%, 0.15);
}

/* SCREEN 1: LAB CONFIGURATION SCREEN */
.intro-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: stretch;
}

@media (max-width: 900px) {
  .intro-grid {
    grid-template-columns: 1fr;
  }
}

.science-intro-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  justify-content: center;
}

.hero-title {
  font-size: 2.8rem;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title span {
  background: linear-gradient(135deg, var(--brand-primary) 20%, var(--brand-secondary) 50%, var(--danger));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}

.hero-description {
  font-size: 1.05rem;
  line-height: 1.65;
}

.instructions-block {
  margin-top: 0.5rem;
  border-top: 1px dashed var(--card-border);
  padding-top: 1.5rem;
}

.instructions-block h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.instruction-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.instruction-list li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.bullet-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: hsla(var(--brand-primary-rgb), 0.15);
  color: var(--brand-primary);
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.instruction-list p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.control-config-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  justify-content: space-between;
}

.section-card-title {
  font-size: 1.75rem;
}

.card-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: -1rem;
}

.config-options-group {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  margin: 1rem 0;
}

.config-option {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.option-label {
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Segmented Selector Switch */
.segmented-selector {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  background: hsla(222, 30%, 8%, 0.4);
  border: 1px solid var(--card-border);
  padding: 4px;
  border-radius: 14px;
  position: relative;
}

.selector-btn {
  background: transparent;
  border: none;
  border-radius: 10px;
  padding: 0.65rem 0.5rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
  color: var(--text-muted);
}

.selector-btn:hover:not(.active) {
  color: var(--text-secondary);
  background: hsla(0, 0%, 100%, 0.03);
}

.selector-btn.active {
  color: hsl(222, 47%, 6%);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  box-shadow: 0 4px 12px var(--brand-glow);
}

[data-theme="light"] .selector-btn.active {
  color: #ffffff;
}

.btn-primary-txt {
  font-family: 'Outfit', sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
}

.btn-sub-txt {
  font-size: 0.72rem;
  font-weight: 500;
  opacity: 0.85;
}

.option-tip {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.launch-btn {
  margin-top: 1rem;
}

/* SCREEN 2: ACTIVE TIMING TIMERS ARENA */
.arena-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

.arena-hud {
  display: grid;
  grid-template-columns: repeat(4, 1fr) auto;
  gap: 1rem;
  align-items: center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius-md);
  box-shadow: var(--card-shadow);
}

@media (max-width: 720px) {
  .arena-hud {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
  .arena-quit-btn {
    grid-column: span 2;
  }
}

.hud-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.hud-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.hud-val {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
}

.text-lapses {
  color: var(--danger) !important;
}

.text-false-starts {
  color: var(--warning) !important;
}

.arena-quit-btn {
  background: hsla(350, 84%, 60%, 0.08);
  border: 1px solid hsla(350, 84%, 60%, 0.2);
  color: var(--danger);
  padding: 0.6rem 1.2rem;
  border-radius: 10px;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.arena-quit-btn:hover {
  background: var(--danger);
  color: hsl(222, 47%, 6%);
}

.arena-progress-container {
  height: 6px;
  background: hsla(0, 0%, 100%, 0.05);
  border-radius: 100px;
  overflow: hidden;
  position: relative;
}

.arena-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
  transition: width 0.1s linear;
  box-shadow: 0 0 10px rgba(167, 102, 255, 0.4);
}

/* STIMULUS DISPLAY Backdrops & Arena viewport click box */
.stimulus-backdrop {
  height: 400px;
  background: hsla(222, 30%, 8%, 0.3);
  border: 2px solid var(--card-border);
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
  position: relative;
  transition: var(--transition-bezier);
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.stimulus-backdrop:active {
  background: hsla(222, 30%, 8%, 0.5);
}

/* Stimulus Core Target Box */
.stimulus-box {
  width: 340px;
  height: 220px;
  border-radius: 20px;
  border: 4px solid var(--danger);
  background: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: var(--transition-fast);
  box-shadow: 0 0 0 rgba(239, 68, 68, 0);
}

/* Waiting / Inter-Stimulus breathing pulse */
.stimulus-backdrop.phase-waiting .stimulus-box {
  border-color: hsla(350, 84%, 60%, 0.25);
  animation: breathingBox 3.5s ease-in-out infinite;
}

/* Trigger Stimulus state - neon radiant glow! */
.stimulus-backdrop.phase-counting .stimulus-box {
  border-color: var(--danger);
  box-shadow: 0 0 45px var(--danger-glow), 0 0 20px rgba(239, 68, 68, 0.15) inset;
  background: hsla(350, 80%, 4%, 1);
}

/* Feedback State - Color shifts according to timing score */
.stimulus-backdrop.phase-feedback-valid .stimulus-box {
  border-color: var(--success);
  box-shadow: 0 0 35px var(--success-glow);
}

.stimulus-backdrop.phase-feedback-lapse .stimulus-box {
  border-color: var(--danger);
  box-shadow: 0 0 35px var(--danger-glow);
}

.stimulus-backdrop.phase-feedback-false .stimulus-box {
  border-color: var(--warning);
  box-shadow: 0 0 35px var(--warning-glow);
  animation: falseStartShake 0.4s ease-in-out;
}

.stimulus-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.stimulus-state-text {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.15em;
  color: hsla(0, 0%, 100%, 0.4);
  text-transform: uppercase;
}

.stimulus-backdrop.phase-waiting .stimulus-state-text {
  animation: blinkText 2s ease-in-out infinite;
}

.stimulus-backdrop.phase-counting .stimulus-state-text {
  display: none;
}

/* Monospaced digital dynamic timer */
.stimulus-timer {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 5.5rem;
  font-weight: 700;
  color: hsl(45, 100%, 55%);
  letter-spacing: -0.02em;
  text-shadow: 0 0 12px rgba(244, 196, 26, 0.35);
}

.stimulus-feedback-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  animation: popScale 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.feedback-rt {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 4.8rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

.stimulus-backdrop.phase-feedback-valid .feedback-rt {
  color: var(--success);
  text-shadow: 0 0 15px rgba(20, 214, 136, 0.3);
}

.stimulus-backdrop.phase-feedback-lapse .feedback-rt {
  color: var(--danger);
  text-shadow: 0 0 15px rgba(239, 68, 68, 0.3);
}

.stimulus-backdrop.phase-feedback-false .feedback-rt {
  color: var(--warning);
  text-shadow: 0 0 15px rgba(244, 160, 26, 0.3);
}

.feedback-msg {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
}

.stimulus-backdrop.phase-feedback-valid .feedback-msg {
  color: var(--success);
}

.stimulus-backdrop.phase-feedback-lapse .feedback-msg {
  color: var(--danger);
}

.stimulus-backdrop.phase-feedback-false .feedback-msg {
  color: var(--warning);
}

.tap-instruction-prompt {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  position: absolute;
  bottom: 2.2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  animation: blinkText 2.5s ease-in-out infinite;
}

/* SCREEN 3: SCIENTIFIC RESULTS DASHBOARD */
.results-section {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.results-summary-card {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

@media (max-width: 768px) {
  .results-summary-card {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.summary-grade-info {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.score-badge {
  background: hsla(265, 88%, 68%, 0.1);
  border-color: hsla(265, 88%, 68%, 0.2);
}

.grade-title {
  font-size: 2.4rem;
  background: linear-gradient(135deg, var(--text-primary), var(--text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.grade-subtitle-desc {
  font-size: 1.05rem;
  line-height: 1.6;
}

.summary-quick-scores {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 2rem;
}

.quick-score-circle {
  width: 140px;
  height: 140px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.circle-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.gauge-fill-ring {
  transition: stroke-dashoffset 1s ease-in-out;
}

.quick-score-inner {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.qs-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}

.qs-unit {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-top: 0.1rem;
}

.lapse-summary-box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.ls-count {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--danger);
}

.ls-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-top: 0.4rem;
}

/* Technical stats metrics details grids */
.results-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .results-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .md-span-2 {
    grid-column: span 2;
  }
}

@media (max-width: 580px) {
  .results-stats-grid {
    grid-template-columns: 1fr;
  }
  .md-span-2 {
    grid-column: span 1;
  }
}

.stats-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  display: flex;
  gap: 1.25rem;
  align-items: center;
  box-shadow: var(--card-shadow);
  transition: var(--transition-bezier);
}

.stats-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand-primary);
}

.sc-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sc-icon.text-primary {
  background: hsla(265, 88%, 68%, 0.12);
  color: var(--brand-primary);
}

.sc-icon.text-lapses {
  background: hsla(350, 84%, 60%, 0.12);
  color: var(--danger);
}

.sc-icon.text-false-starts {
  background: hsla(38, 96%, 52%, 0.12);
  color: var(--warning);
}

.sc-icon.text-purple {
  background: hsla(275, 80%, 65%, 0.12);
  color: var(--purple);
}

.sc-icon.text-green {
  background: hsla(150, 84%, 44%, 0.12);
  color: var(--success);
}

.sc-icon svg {
  width: 26px;
  height: 26px;
}

.sc-content {
  display: flex;
  flex-direction: column;
}

.sc-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.sc-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  margin-top: 0.1rem;
}

.sc-unit {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
}

.sc-comparison {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* Attentional Chart Layout */
.chart-container-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card-header-with-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.card-title-icon h3 {
  font-size: 1.35rem;
  font-weight: 600;
}

.chart-legend-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.chart-canvas-wrapper {
  width: 100%;
  background: hsla(222, 30%, 8%, 0.35);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-md);
  padding: 1rem;
  overflow: hidden;
}

.chart-canvas-wrapper svg {
  display: block;
  width: 100%;
  height: auto;
}

/* Diagnostic Fatigue Assessments */
.diagnostic-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.diagnostic-content-text {
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.diagnostic-content-text p {
  margin-bottom: 0.75rem;
}

.diagnostic-content-text p:last-child {
  margin-bottom: 0;
}

.diagnostic-content-text strong {
  color: var(--text-primary);
}

/* Session Logs Table list */
.history-container-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.history-table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.clear-history-btn {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.clear-history-btn:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.history-table-wrapper {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--card-border);
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.history-table th, .history-table td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--card-border);
}

.history-table th {
  background: hsla(222, 30%, 8%, 0.4);
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}

.history-table tbody tr:last-child td {
  border-bottom: none;
}

.history-table tbody tr:hover {
  background: hsla(0, 0%, 100%, 0.015);
}

.history-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 2.5rem !important;
}

/* Result controls alignment */
.btn-group-results {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 1.25rem;
  margin-top: 1rem;
}

@media (max-width: 768px) {
  .btn-group-results {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* Footer structure */
.app-footer {
  text-align: center;
  border-top: 1px solid var(--card-border);
  padding: 1.75rem 0;
  margin-top: 1rem;
}

.footer-citation {
  font-size: 0.78rem;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.5;
}

.footer-citation em {
  color: var(--text-secondary);
}

/* KEYFRAMES & MICRO-ANIMATIONS */
@keyframes breathingBox {
  0% {
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.02);
    border-color: hsla(350, 84%, 60%, 0.15);
  }
  50% {
    box-shadow: 0 0 25px rgba(239, 68, 68, 0.1);
    border-color: hsla(350, 84%, 60%, 0.35);
  }
  100% {
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.02);
    border-color: hsla(350, 84%, 60%, 0.15);
  }
}

@keyframes rotateClock {
  100% {
    transform: rotate(360deg);
  }
}

@keyframes blinkText {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 0.95; }
}

@keyframes blinkWarning {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

@keyframes popScale {
  0% { transform: scale(0.85); opacity: 0.7; }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes falseStartShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-8px); }
  40%, 80% { transform: translateX(8px); }
}

@keyframes fadeIn {
  0% { opacity: 0; transform: translateY(12px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* Printing styles adjustments for Export Lab Report */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .app-container {
    max-width: 100% !important;
    padding: 0 !important;
    gap: 1.5rem !important;
  }
  .theme-toggle-btn, .btn-group-results, .arena-section, .config-section, .clear-history-btn, .app-header button {
    display: none !important;
  }
  .glass-card {
    background: #ffffff !important;
    border: 1px solid #cccccc !important;
    box-shadow: none !important;
    color: #000000 !important;
    padding: 1.5rem !important;
    page-break-inside: avoid;
  }
  .sc-icon {
    background: #eeeeee !important;
    color: #333333 !important;
  }
  .grade-title, .sc-value, .qs-value, .ls-count {
    color: #000000 !important;
    background: none !important;
    -webkit-text-fill-color: initial !important;
  }
}