:root {
  --wsk-primary: #0369a1;
  --wsk-secondary: #0d9488;
  --wsk-ink: #0f172a;
  --wsk-muted: #475569;
  --wsk-bg: #f8fafc;
  --wsk-surface: #ffffff;
  --wsk-border: #e2e8f0;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--wsk-ink);
  background-color: var(--wsk-bg);
  -webkit-font-smoothing: antialiased;
  padding-top: env(safe-area-inset-top);
}

.wsk-topbar {
  background: #0f172a;
  color: #e2e8f0;
  font-size: 0.8125rem;
}

.wsk-topbar a {
  color: #e2e8f0;
  text-decoration: none;
}

.wsk-navbar {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--wsk-border);
}

.btn-wsk-primary {
  background-color: var(--wsk-primary);
  border-color: var(--wsk-primary);
  color: #ffffff;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-weight: 600;
}

.btn-wsk-primary:hover,
.btn-wsk-primary:focus {
  filter: brightness(0.92);
  color: #ffffff;
}

.btn-wsk-secondary {
  background-color: var(--wsk-secondary);
  border-color: var(--wsk-secondary);
  color: #ffffff;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-weight: 600;
}

.btn-wsk-secondary:hover {
  filter: brightness(0.92);
  color: #ffffff;
}

.wsk-card {
  background: var(--wsk-surface);
  border: 1px solid var(--wsk-border);
  border-radius: 14px;
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.wsk-card-hover:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.08);
}

.wsk-hero {
  background: linear-gradient(135deg, #f0f9ff 0%, #ffffff 55%, #f0fdfa 100%);
  border-bottom: 1px solid var(--wsk-border);
}

.wsk-trust-strip {
  background: #ffffff;
  border-bottom: 1px solid var(--wsk-border);
}

.wsk-step-num {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--wsk-primary);
  color: #ffffff;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.wsk-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(3, 105, 161, 0.1);
  color: var(--wsk-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.tabular-nums {
  font-variant-numeric: tabular-nums;
}

/* Prevent iOS zoom on form inputs */
input.form-control,
select.form-select,
textarea.form-control {
  font-size: 16px;
  min-height: 44px;
}

/* MCQ option label touch targets */
.wsk-mcq-option {
  border: 1.5px solid var(--wsk-border);
  border-radius: 12px;
  padding: 14px 16px;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: border-color 0.15s ease, background-color 0.15s ease;
  background: #ffffff;
}

.wsk-mcq-option:hover {
  border-color: var(--wsk-primary);
  background: #f0f9ff;
}

.wsk-mcq-option input[type="radio"]:checked + span {
  font-weight: 600;
  color: var(--wsk-primary);
}

/* Mobile PWA Bottom Navigation */
.wsk-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--wsk-border);
  padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
  display: none;
}

.wsk-bottom-nav a {
  flex: 1;
  text-align: center;
  text-decoration: none;
  color: var(--wsk-muted);
  font-size: 0.72rem;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 4px 2px;
  min-height: 44px;
  justify-content: center;
}

.wsk-bottom-nav a.active {
  color: var(--wsk-primary);
}

.wsk-bottom-nav i {
  font-size: 1.15rem;
}

@media (max-width: 767.98px) {
  body.wsk-has-bottom-nav {
    padding-bottom: calc(72px + env(safe-area-inset-bottom));
  }
  .wsk-bottom-nav {
    display: flex;
  }
}

@media (display-mode: standalone) {
  body.wsk-has-bottom-nav {
    padding-bottom: calc(72px + env(safe-area-inset-bottom));
  }
  .wsk-bottom-nav {
    display: flex;
  }
  .wsk-hide-standalone {
    display: none !important;
  }
}

.wsk-offline-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1080;
  background: #b45309;
  color: #ffffff;
  text-align: center;
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 600;
  display: none;
}

.wsk-install-banner {
  background: linear-gradient(90deg, #0f172a, #1e293b);
  color: #ffffff;
  padding: 10px 16px;
  font-size: 0.9rem;
}