/* =========================================================
   HS-STYLES.CSS - HockeyStack Academy Demo
   Brand-aligned styles with distinctive learning aesthetic
   ========================================================= */

/* -------------------------
   CSS VARIABLES
   ------------------------- */

:root {
  /* HockeyStack Brand Colors */
  --hs-bg-primary: #0A0C0F;
  --hs-bg-secondary: #12151A;
  --hs-bg-tertiary: #1A1E25;
  --hs-bg-card: #151921;
  
  --hs-accent-primary: #00D4AA;
  --hs-accent-secondary: #00F0C0;
  --hs-accent-glow: rgba(0, 212, 170, 0.15);
  --hs-accent-subtle: rgba(0, 212, 170, 0.08);
  
  --hs-purple: #8B5CF6;
  --hs-purple-glow: rgba(139, 92, 246, 0.15);
  
  --hs-text-primary: #F1F5F9;
  --hs-text-secondary: #94A3B8;
  --hs-text-muted: #64748B;
  
  --hs-border: #262D3A;
  --hs-border-hover: #3D4654;
  
  --hs-success: #10B981;
  --hs-warning: #F59E0B;
  --hs-error: #EF4444;
  
  /* Typography */
  --font-display: 'Plus Jakarta Sans', 'DM Sans', system-ui, sans-serif;
  --font-body: 'Inter', 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  
  /* Borders */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

/* -------------------------
   RESET & BASE
   ------------------------- */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--hs-bg-primary);
  color: var(--hs-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle animated gradient background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse 80% 50% at 20% -20%, var(--hs-accent-glow), transparent),
    radial-gradient(ellipse 60% 40% at 80% 100%, var(--hs-purple-glow), transparent);
  pointer-events: none;
  z-index: -1;
}

a {
  color: var(--hs-accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--hs-accent-secondary);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  margin: 0;
}

img {
  max-width: 100%;
  height: auto;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* -------------------------
   UTILITIES
   ------------------------- */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--narrow {
  max-width: 900px;
}

.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-gradient {
  background: linear-gradient(135deg, var(--hs-accent-primary), var(--hs-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-purple {
  background: linear-gradient(135deg, var(--hs-purple), #A78BFA);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* -------------------------
   NAVIGATION BAR
   ------------------------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 12, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hs-border);
  padding: var(--space-md) 0;
}

.nav__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--hs-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav__brand-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--hs-accent-primary), var(--hs-purple));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.nav__links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav__link {
  color: var(--hs-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: var(--space-sm) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--hs-accent-primary);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
  color: var(--hs-text-primary);
}

.nav__link.active::after,
.nav__link:hover::after {
  width: 100%;
}

.nav__back {
  color: var(--hs-text-secondary);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  transition: color var(--transition-fast);
}

.nav__back:hover {
  color: var(--hs-accent-primary);
}

/* -------------------------
   HERO SECTION
   ------------------------- */

.hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  text-align: center;
  position: relative;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--hs-accent-subtle);
  border: 1px solid rgba(0, 212, 170, 0.2);
  padding: var(--space-sm) var(--space-md);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--hs-accent-primary);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease-out;
}

.hero__eyebrow-dot {
  width: 8px;
  height: 8px;
  background: var(--hs-accent-primary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--hs-text-secondary);
  max-width: 680px;
  margin: 0 auto var(--space-xl);
  line-height: 1.7;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* -------------------------
   BUTTONS
   ------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn--primary {
  background: var(--hs-accent-primary);
  color: var(--hs-bg-primary);
  box-shadow: 0 4px 20px rgba(0, 212, 170, 0.25);
}

.btn--primary:hover {
  background: var(--hs-accent-secondary);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 170, 0.35);
  color: var(--hs-bg-primary);
}

.btn--secondary {
  background: var(--hs-bg-tertiary);
  color: var(--hs-text-primary);
  border: 1px solid var(--hs-border);
}

.btn--secondary:hover {
  background: var(--hs-bg-card);
  border-color: var(--hs-border-hover);
  color: var(--hs-text-primary);
}

.btn--ghost {
  background: transparent;
  color: var(--hs-accent-primary);
  border: 1px solid var(--hs-accent-primary);
}

.btn--ghost:hover {
  background: var(--hs-accent-subtle);
  color: var(--hs-accent-primary);
}

.btn__icon {
  font-size: 1.1em;
  transition: transform var(--transition-fast);
}

.btn:hover .btn__icon {
  transform: translateX(4px);
}

/* -------------------------
   CARDS
   ------------------------- */

.card {
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--hs-border-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.card--clickable {
  cursor: pointer;
}

.card--highlight {
  border-color: var(--hs-accent-primary);
  background: linear-gradient(135deg, var(--hs-bg-card), rgba(0, 212, 170, 0.05));
}

.card--purple {
  border-color: var(--hs-purple);
  background: linear-gradient(135deg, var(--hs-bg-card), rgba(139, 92, 246, 0.05));
}

.card__icon {
  width: 48px;
  height: 48px;
  background: var(--hs-accent-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.card__icon--purple {
  background: var(--hs-purple-glow);
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--hs-text-primary);
}

.card__description {
  color: var(--hs-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--hs-border);
  font-size: 0.85rem;
  color: var(--hs-text-muted);
}

.card__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  background: var(--hs-bg-tertiary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* -------------------------
   GRID LAYOUTS
   ------------------------- */

.grid {
  display: grid;
  gap: var(--space-xl);
}

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

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

@media (max-width: 1024px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

/* -------------------------
   SECTIONS
   ------------------------- */

.section {
  padding: var(--space-3xl) 0;
}

.section--alt {
  background: var(--hs-bg-secondary);
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.section__eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--hs-accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--space-md);
}

.section__description {
  color: var(--hs-text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
}

/* -------------------------
   COMPARISON LAYOUT
   ------------------------- */

.comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-xl);
  align-items: stretch;
}

.comparison__side {
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.comparison__side--before {
  opacity: 0.7;
}

.comparison__side--after {
  border-color: var(--hs-accent-primary);
  box-shadow: 0 0 40px var(--hs-accent-glow);
}

.comparison__divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

.comparison__arrow {
  font-size: 2rem;
  color: var(--hs-accent-primary);
}

.comparison__label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--hs-text-muted);
}

.comparison__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.comparison__list {
  list-style: none;
}

.comparison__list li {
  padding: var(--space-sm) 0;
  padding-left: var(--space-lg);
  position: relative;
  color: var(--hs-text-secondary);
  font-size: 0.9rem;
}

.comparison__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--hs-text-muted);
}

.comparison__side--after .comparison__list li::before {
  background: var(--hs-accent-primary);
}

@media (max-width: 900px) {
  .comparison {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }
  
  .comparison__divider {
    flex-direction: row;
    padding: var(--space-md) 0;
  }
  
  .comparison__label {
    writing-mode: horizontal-tb;
  }
  
  .comparison__arrow {
    transform: rotate(90deg);
  }
}

/* -------------------------
   PILLARS / FEATURES GRID
   ------------------------- */

.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.pillar {
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.pillar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--hs-accent-primary), var(--hs-purple));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.pillar:hover {
  border-color: var(--hs-border-hover);
  transform: translateY(-4px);
}

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

.pillar__number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--hs-accent-primary);
  margin-bottom: var(--space-md);
}

.pillar__icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.pillar__title {
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
}

.pillar__description {
  color: var(--hs-text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

@media (max-width: 1100px) {
  .pillars {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .pillars {
    grid-template-columns: 1fr;
  }
}

/* -------------------------
   STATS ROW
   ------------------------- */

.stats {
  display: flex;
  justify-content: center;
  gap: var(--space-3xl);
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--hs-border);
  border-bottom: 1px solid var(--hs-border);
}

.stat {
  text-align: center;
}

.stat__value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--hs-accent-primary);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat__label {
  font-size: 0.85rem;
  color: var(--hs-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .stats {
    flex-direction: column;
    gap: var(--space-xl);
  }
}

/* -------------------------
   DASHBOARD LAYOUT
   ------------------------- */

.dashboard {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.dashboard__sidebar {
  background: var(--hs-bg-secondary);
  border-right: 1px solid var(--hs-border);
  padding: var(--space-lg);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.dashboard__main {
  padding: var(--space-xl);
  overflow-y: auto;
}

.dashboard__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--hs-border);
}

.dashboard__title {
  font-size: 1.5rem;
}

/* Sidebar Navigation */
.sidebar-nav__section {
  margin-bottom: var(--space-xl);
}

.sidebar-nav__label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--hs-text-muted);
  margin-bottom: var(--space-sm);
  padding: 0 var(--space-sm);
}

.sidebar-nav__list {
  list-style: none;
}

.sidebar-nav__item {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--hs-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar-nav__item:hover {
  background: var(--hs-bg-tertiary);
  color: var(--hs-text-primary);
}

.sidebar-nav__item.active {
  background: var(--hs-accent-subtle);
  color: var(--hs-accent-primary);
}

.sidebar-nav__icon {
  font-size: 1rem;
  width: 20px;
  text-align: center;
}

/* Role Selector */
.role-selector {
  background: var(--hs-bg-tertiary);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-xl);
}

.role-selector__label {
  font-size: 0.75rem;
  color: var(--hs-text-muted);
  margin-bottom: var(--space-sm);
  display: block;
}

.role-selector__dropdown {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-sm);
  color: var(--hs-text-primary);
  font-size: 0.9rem;
  cursor: pointer;
}

.role-selector__dropdown:focus {
  outline: none;
  border-color: var(--hs-accent-primary);
}

@media (max-width: 900px) {
  .dashboard {
    grid-template-columns: 1fr;
  }
  
  .dashboard__sidebar {
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--hs-border);
  }
  
  .sidebar-nav__list {
    display: flex;
    gap: var(--space-sm);
    overflow-x: auto;
    padding-bottom: var(--space-sm);
  }
  
  .sidebar-nav__item {
    white-space: nowrap;
  }
}

/* -------------------------
   LEARNING CARDS
   ------------------------- */

.learning-card {
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.learning-card:hover {
  border-color: var(--hs-accent-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.learning-card__badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background: var(--hs-accent-subtle);
  border: 1px solid rgba(0, 212, 170, 0.3);
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--hs-accent-primary);
}

.learning-card__badge--completed {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--hs-success);
}

.learning-card__badge--in-progress {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.3);
  color: var(--hs-warning);
}

.learning-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.learning-card__title {
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
}

.learning-card__description {
  color: var(--hs-text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: var(--space-md);
}

.learning-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.8rem;
  color: var(--hs-text-muted);
}

.learning-card__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Progress Bar */
.progress {
  height: 4px;
  background: var(--hs-bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
  margin-top: var(--space-md);
}

.progress__bar {
  height: 100%;
  background: linear-gradient(90deg, var(--hs-accent-primary), var(--hs-accent-secondary));
  border-radius: 2px;
  transition: width var(--transition-slow);
}

/* -------------------------
   AI COACH
   ------------------------- */

.ai-coach {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 200px);
  max-height: 700px;
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.ai-coach__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-bottom: 1px solid var(--hs-border);
  background: var(--hs-bg-tertiary);
}

.ai-coach__avatar {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--hs-accent-primary), var(--hs-purple));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.ai-coach__title {
  font-size: 1rem;
  font-weight: 600;
}

.ai-coach__subtitle {
  font-size: 0.8rem;
  color: var(--hs-text-muted);
}

.ai-coach__status {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.75rem;
  color: var(--hs-success);
}

.ai-coach__status-dot {
  width: 8px;
  height: 8px;
  background: var(--hs-success);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.ai-coach__messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.ai-coach__message {
  max-width: 80%;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  line-height: 1.5;
  animation: fadeInUp 0.3s ease-out;
}

.ai-coach__message--ai {
  background: var(--hs-bg-tertiary);
  border: 1px solid var(--hs-border);
  align-self: flex-start;
  border-bottom-left-radius: var(--radius-sm);
}

.ai-coach__message--user {
  background: var(--hs-accent-primary);
  color: var(--hs-bg-primary);
  align-self: flex-end;
  border-bottom-right-radius: var(--radius-sm);
}

.ai-coach__input-area {
  padding: var(--space-lg);
  border-top: 1px solid var(--hs-border);
  background: var(--hs-bg-tertiary);
}

.ai-coach__input-wrapper {
  display: flex;
  gap: var(--space-sm);
}

.ai-coach__input {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-md);
  color: var(--hs-text-primary);
  font-size: 0.95rem;
  font-family: inherit;
}

.ai-coach__input::placeholder {
  color: var(--hs-text-muted);
}

.ai-coach__input:focus {
  outline: none;
  border-color: var(--hs-accent-primary);
}

.ai-coach__send {
  padding: var(--space-md) var(--space-lg);
  background: var(--hs-accent-primary);
  color: var(--hs-bg-primary);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.ai-coach__send:hover {
  background: var(--hs-accent-secondary);
}

/* Prompt Starters */
.prompt-starters {
  margin-top: var(--space-md);
}

.prompt-starters__label {
  font-size: 0.75rem;
  color: var(--hs-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.prompt-starters__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-sm);
}

.prompt-starter {
  padding: var(--space-sm) var(--space-md);
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--hs-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
}

.prompt-starter:hover {
  border-color: var(--hs-accent-primary);
  color: var(--hs-text-primary);
  background: var(--hs-bg-tertiary);
}

/* -------------------------
   CONTENT LAB
   ------------------------- */

.content-lab {
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.content-lab__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.content-lab__title {
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.content-lab__flow {
  display: grid;
  grid-template-columns: 1fr auto 2fr;
  gap: var(--space-xl);
  align-items: start;
}

.content-lab__source {
  background: var(--hs-bg-tertiary);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.content-lab__source-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.content-lab__source-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.content-lab__source-meta {
  font-size: 0.8rem;
  color: var(--hs-text-muted);
}

.content-lab__arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding-top: var(--space-xl);
}

.content-lab__arrow-icon {
  font-size: 1.5rem;
  color: var(--hs-accent-primary);
  animation: arrowPulse 1.5s ease-in-out infinite;
}

@keyframes arrowPulse {
  0%, 100% { transform: translateX(0); opacity: 1; }
  50% { transform: translateX(5px); opacity: 0.7; }
}

.content-lab__arrow-label {
  font-size: 0.7rem;
  color: var(--hs-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.content-lab__outputs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.content-output {
  background: var(--hs-bg-tertiary);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transition: all var(--transition-base);
  cursor: pointer;
}

.content-output:hover {
  border-color: var(--hs-accent-primary);
  background: var(--hs-bg-card);
}

.content-output__icon {
  width: 40px;
  height: 40px;
  background: var(--hs-accent-subtle);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.content-output__info {
  flex: 1;
  min-width: 0;
}

.content-output__title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.content-output__meta {
  font-size: 0.75rem;
  color: var(--hs-text-muted);
}

.content-output__status {
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.1);
  color: var(--hs-success);
}

@media (max-width: 900px) {
  .content-lab__flow {
    grid-template-columns: 1fr;
  }
  
  .content-lab__arrow {
    flex-direction: row;
    padding: var(--space-md) 0;
  }
  
  .content-lab__arrow-icon {
    transform: rotate(90deg);
  }
}

/* -------------------------
   METRICS CARDS
   ------------------------- */

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.metric-card {
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.metric-card__label {
  font-size: 0.8rem;
  color: var(--hs-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.metric-card__value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--hs-text-primary);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.metric-card__value--accent {
  color: var(--hs-accent-primary);
}

.metric-card__change {
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.metric-card__change--positive {
  color: var(--hs-success);
}

.metric-card__change--negative {
  color: var(--hs-error);
}

@media (max-width: 1024px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }
}

/* -------------------------
   ARCHITECTURE DIAGRAM
   ------------------------- */

.architecture {
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.architecture__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  position: relative;
}

.architecture__layer {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.architecture__layer-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--hs-accent-primary);
  text-align: center;
  margin-bottom: var(--space-sm);
}

.architecture__node {
  background: var(--hs-bg-tertiary);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
}

.architecture__node:hover {
  border-color: var(--hs-accent-primary);
  transform: scale(1.02);
  box-shadow: 0 4px 20px rgba(0, 212, 170, 0.15);
}

.architecture__node-icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.architecture__node-title {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.architecture__node-description {
  font-size: 0.75rem;
  color: var(--hs-text-muted);
}

/* Connection lines (decorative) */
.architecture__connections {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  opacity: 0.3;
}

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

/* -------------------------
   COURSE PLAYER
   ------------------------- */

.course-player {
  background: var(--hs-bg-card);
  border: 1px solid var(--hs-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.course-player__header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--hs-border);
  background: var(--hs-bg-tertiary);
}

.course-player__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

.course-player__meta {
  font-size: 0.85rem;
  color: var(--hs-text-muted);
}

.course-player__progress {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.course-player__progress-bar {
  flex: 1;
  height: 6px;
  background: var(--hs-bg-primary);
  border-radius: 3px;
  overflow: hidden;
}

.course-player__progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--hs-accent-primary), var(--hs-accent-secondary));
  transition: width var(--transition-slow);
}

.course-player__progress-text {
  font-size: 0.8rem;
  color: var(--hs-text-muted);
  white-space: nowrap;
}

.course-player__content {
  padding: var(--space-xl);
}

.course-player__module-title {
  font-size: 1.1rem;
  margin-bottom: var(--space-md);
  color: var(--hs-accent-primary);
}

.course-player__module-body {
  color: var(--hs-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

.course-player__actions {
  display: flex;
  gap: var(--space-md);
}

/* -------------------------
   FOOTER
   ------------------------- */

.footer {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--hs-border);
  text-align: center;
}

.footer__content {
  max-width: 600px;
  margin: 0 auto;
}

.footer__text {
  color: var(--hs-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
}

.footer__link {
  color: var(--hs-text-secondary);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--hs-accent-primary);
}

/* -------------------------
   RESPONSIVE UTILITIES
   ------------------------- */

@media (max-width: 768px) {
  :root {
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
    --space-3xl: 2.5rem;
  }
  
  .container {
    padding: 0 var(--space-md);
  }
  
  .hero__title {
    font-size: 2rem;
  }
  
  .hero__subtitle {
    font-size: 1.1rem;
  }
  
  .nav__links {
    display: none;
  }
}

/* -------------------------
   ANIMATIONS
   ------------------------- */

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.slide-up {
  animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Stagger animations for lists */
.stagger > *:nth-child(1) { animation-delay: 0.1s; }
.stagger > *:nth-child(2) { animation-delay: 0.15s; }
.stagger > *:nth-child(3) { animation-delay: 0.2s; }
.stagger > *:nth-child(4) { animation-delay: 0.25s; }
.stagger > *:nth-child(5) { animation-delay: 0.3s; }
.stagger > *:nth-child(6) { animation-delay: 0.35s; }

/* -------------------------
   PRINT STYLES
   ------------------------- */

@media print {
  body::before {
    display: none;
  }
  
  .nav,
  .footer,
  .btn {
    display: none;
  }
  
  .card,
  .pillar,
  .learning-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
  }
}

/* -------------------------
   ACCESSIBILITY
   ------------------------- */

:focus-visible {
  outline: 2px solid var(--hs-accent-primary);
  outline-offset: 2px;
}

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