:root {
  --pkl-bg: #F4F6F7;
  --pkl-surface: #ffffff;
  --pkl-card: #ffffff;
  --pkl-navy: #1B2A4A;
  --pkl-primary: #008080;
  --pkl-primary-dark: #006666;
  --pkl-teal-light: #A3E4D7;
  --pkl-accent: #008080;
  --pkl-success: #008080;
  --pkl-danger: #c0392b;
  --pkl-warning: #b45309;
  --pkl-text: #1B2A4A;
  --pkl-muted: #5a6880;
  --pkl-border: #d4dde6;
  --pkl-input-bg: #ffffff;
  --pkl-radius: 14px;
  --pkl-shadow: 0 12px 40px rgba(27, 42, 74, 0.08);
  --pkl-font: "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

.pkl-body {
  margin: 0;
  font-family: var(--pkl-font);
  background: linear-gradient(165deg, var(--pkl-bg) 0%, #eef1f4 45%, var(--pkl-bg) 100%);
  color: var(--pkl-text);
  min-height: 100vh;
}

.pkl-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.pkl-site-header {
  border-bottom: 1px solid var(--pkl-border);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 0 rgba(27, 42, 74, 0.04);
}

.pkl-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}

.pkl-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--pkl-text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
}

.pkl-brand-icon {
  font-size: 1.4rem;
}

.pkl-nav a {
  color: var(--pkl-muted);
  text-decoration: none;
  margin-left: 20px;
  font-weight: 500;
  transition: color 0.2s;
}

.pkl-nav a:hover {
  color: var(--pkl-primary);
}

.pkl-nav-user {
  color: var(--pkl-muted);
  margin-left: 20px;
  font-weight: 500;
  font-size: 0.95rem;
}

.pkl-site-footer {
  margin-top: 48px;
  padding: 24px 0;
  border-top: 1px solid var(--pkl-border);
  color: var(--pkl-muted);
  text-align: center;
  font-size: 0.9rem;
}

/* Landing (legacy — layout hero nằm ở home-picker.css) */
.pkl-badge {
  display: inline-block;
  background: var(--pkl-teal-light);
  color: var(--pkl-primary-dark);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.pkl-landing-copy h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.15;
  margin: 0 0 16px;
  color: var(--pkl-navy);
}

.pkl-landing-copy h1 em {
  color: var(--pkl-accent);
  font-style: normal;
}

.pkl-landing-copy p {
  color: var(--pkl-muted);
  font-size: 1.05rem;
  max-width: 520px;
  line-height: 1.6;
}

.pkl-landing-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.pkl-landing-cards {
  display: grid;
  gap: 16px;
}

.pkl-feature-card {
  background: var(--pkl-card);
  border: 1px solid var(--pkl-border);
  border-radius: var(--pkl-radius);
  padding: 20px 22px;
  box-shadow: var(--pkl-shadow);
}

.pkl-feature-card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--pkl-navy);
}

.pkl-feature-card p {
  margin: 0;
  color: var(--pkl-muted);
  font-size: 0.95rem;
}

.pkl-feature-card code {
  background: var(--pkl-teal-light);
  color: var(--pkl-navy);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.85rem;
}

/* Buttons */
.pkl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
  text-decoration: none;
  font-family: inherit;
}

.pkl-btn:hover {
  transform: translateY(-1px);
}

.pkl-btn-primary {
  background: linear-gradient(135deg, var(--pkl-primary), var(--pkl-primary-dark));
  color: white;
  box-shadow: 0 8px 24px rgba(0, 128, 128, 0.35);
}

.pkl-btn-ghost {
  background: #fff;
  color: var(--pkl-text);
  border: 1px solid var(--pkl-border);
  box-shadow: 0 1px 2px rgba(27, 42, 74, 0.04);
}

.pkl-btn-ghost:hover {
  background: var(--pkl-bg);
  color: var(--pkl-navy);
  border-color: var(--pkl-muted);
}

.pkl-btn-danger {
  background: var(--pkl-danger);
  color: white;
}

.pkl-btn-sm {
  padding: 6px 12px;
  font-size: 0.85rem;
}

.pkl-input,
select.pkl-input,
textarea.pkl-input {
  width: 100%;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--pkl-border);
  background: var(--pkl-input-bg);
  color: var(--pkl-text);
  font-family: inherit;
  font-size: 0.95rem;
  margin-top: 6px;
  line-height: 1.5;
}

.pkl-input::placeholder {
  color: var(--pkl-muted);
  opacity: 0.65;
}

.pkl-input:focus,
select.pkl-input:focus,
textarea.pkl-input:focus {
  outline: none;
  border-color: var(--pkl-primary);
  box-shadow: 0 0 0 3px rgba(0, 128, 128, 0.15);
}

/* Radio / checkbox — đồng bộ light */
.pkl-ui-check,
input[type="radio"].pkl-compose-correct,
input[type="checkbox"].pkl-ui-check {
  width: 1.125rem;
  height: 1.125rem;
  margin: 0;
  accent-color: var(--pkl-primary);
  cursor: pointer;
  flex-shrink: 0;
}

select.pkl-input {
  cursor: pointer;
  appearance: auto;
}