/* Screen management */
.screen {
  display: none;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}
.screen.active {
  display: flex;
  flex-direction: column;
}

/* Landing screen */
.landing-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.btn-admin-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s;
}
.btn-admin-link:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
}

.btn-signout {
  padding: 8px 12px;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all 0.15s;
}
.btn-signout:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.logo-img {
  height: 48px;
  width: auto;
}

.logo-text h1 {
  color: var(--color-accent);
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-tagline {
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.landing-main {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-xl) var(--space-xl) var(--space-2xl);
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.landing-intro {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.landing-intro h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.landing-intro p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
}

.landing-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-md);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}
.landing-footer .powered-by-inline {
  font-size: var(--font-size-xs);
  margin-top: var(--space-xs);
  opacity: 0.7;
  transition: opacity 0.2s;
}
.landing-footer .powered-by-inline:hover { opacity: 1; }
.landing-footer .powered-by-inline a {
  color: inherit;
  text-decoration: none;
}
.landing-footer .powered-by-inline a:hover { color: var(--color-primary); }
.landing-footer .repgym-mini {
  font-family: var(--font-family-brand);
  letter-spacing: -0.02em;
  font-weight: 900;
}

/* Scenarios grid */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}

/* Summary screen */
.summary-container {
  max-width: 700px;
  margin: 0 auto;
  padding: var(--space-2xl);
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.summary-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.summary-header .logo-img {
  height: 64px;
  margin: 0 auto var(--space-md);
}

.summary-header h2 {
  font-size: var(--font-size-2xl);
  color: var(--color-text);
}

.summary-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  width: 100%;
  margin-bottom: var(--space-xl);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
}

.stat-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-primary);
}

.summary-feedback {
  width: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.summary-feedback h3 {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.feedback-content {
  color: var(--color-text-secondary);
  line-height: 1.7;
  white-space: pre-wrap;
}

.summary-actions {
  display: flex;
  gap: var(--space-md);
}

/* Responsive */
@media (max-width: 768px) {
  .landing-main {
    padding: var(--space-lg) var(--space-md);
  }
  .scenarios-grid {
    grid-template-columns: 1fr;
  }
  .summary-stats {
    grid-template-columns: 1fr;
  }
}