/* Covren Landing Page (LP-01) — extends design-system.css variables */

/* --- View Transitions (progressive enhancement, Chromium 126+) --- */
@view-transition { navigation: auto; }

::view-transition-old(covren-logo) {
  animation: var(--duration-normal) var(--ease-spring) both fade-out-scale;
}
::view-transition-new(covren-logo) {
  animation: var(--duration-normal) var(--ease-spring) both fade-in-scale;
}
::view-transition-old(root) {
  animation: var(--duration-fast) var(--ease-default) both vt-fade-out;
}
::view-transition-new(root) {
  animation: var(--duration-fast) var(--ease-default) both vt-fade-in;
}

@keyframes fade-out-scale { to { opacity: 0; transform: scale(0.95); } }
@keyframes fade-in-scale { from { opacity: 0; transform: scale(0.95); } }
@keyframes vt-fade-out { to { opacity: 0; } }
@keyframes vt-fade-in { from { opacity: 0; } }

/* --- Global --- */
html { scroll-behavior: smooth; }

/* --- Container --- */
.landing-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* --- Nav (frosted glass) --- */
.landing-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-xs);
  padding: var(--space-3) 0;
}
.landing-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 100%;
  padding: 0 var(--space-8);
}
.landing-nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--weight-semibold);
  font-size: var(--text-lg);
  color: var(--text);
  text-decoration: none;
}
.landing-nav__logo:hover { text-decoration: none; color: var(--text); }
.landing-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  background: none;
  border-bottom: none;
  padding: 0;
}
.landing-nav__links a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.landing-nav__links a:hover { color: var(--text); text-decoration: none; }
.landing-nav__login { font-weight: var(--weight-medium); }
.landing-nav__cta {
  font-size: var(--text-sm) !important;
  padding: var(--space-2) var(--space-5) !important;
  text-decoration: none !important;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast) !important;
}
.landing-nav__cta:hover {
  box-shadow: var(--shadow-accent);
}
.landing-nav__links .landing-nav__cta {
  color: var(--accent-text);
}
.landing-nav__links .landing-nav__cta:hover {
  color: var(--accent-text);
}
.landing-nav__mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: var(--space-1);
}

/* --- Hero --- */
.landing-hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-12) 0;
  text-align: center;
}
.landing-hero__glow {
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(var(--accent-rgb), 0.15) 0%,
    rgba(var(--accent-rgb), 0.05) 40%,
    transparent 70%
  );
  pointer-events: none;
  z-index: 0;
}
.landing-hero .landing-container {
  position: relative;
  z-index: 1;
}
.landing-hero__headline {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: var(--weight-bold);
  line-height: 1.15;
  letter-spacing: var(--tracking-tighter);
  margin: 0 0 var(--space-6);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.landing-hero__sub {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 580px;
  margin: 0 auto var(--space-8);
}
.landing-hero__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}
.landing-hero__cta {
  font-size: var(--text-base) !important;
  padding: var(--space-3) var(--space-8) !important;
  text-decoration: none !important;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast) !important;
}
.landing-hero__cta.btn-primary {
  box-shadow: var(--shadow-accent-lg);
}
.landing-hero__cta.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent-lg), var(--shadow-md);
}
.landing-hero__trial-badge {
  display: inline-block;
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--accent);
  background: var(--accent-muted);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
}
.landing-pricing__trial-badge {
  display: block;
  width: fit-content;
  margin: 0 auto var(--space-8);
}

/* --- Sections --- */
.landing-section {
  padding: var(--space-12) 0;
}
.landing-section--alt {
  background: var(--surface-gradient);
}
.landing-section__title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  text-align: center;
  margin: 0 0 var(--space-10);
  letter-spacing: var(--tracking-tight);
  position: relative;
  padding-bottom: var(--space-4);
}
.landing-section__title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

/* --- Steps (card treatment) --- */
.landing-steps {
  display: flex;
  align-items: stretch;
  gap: var(--space-6);
  justify-content: center;
}
.landing-step {
  flex: 1;
  max-width: 260px;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.landing-step:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.landing-step__number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  box-shadow: var(--shadow-accent);
}
.landing-step h3 {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  margin: 0 0 var(--space-2);
}
.landing-step p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin: 0;
}
.landing-step__arrow {
  flex-shrink: 0;
  color: var(--accent);
  opacity: 0.5;
  align-self: center;
  /* Prevent stagger-in animation from overriding transform */
  animation: none !important;
}

/* --- Pricing (gradient border + glow) --- */
.landing-pricing {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  max-width: 840px;
  margin: 0 auto;
}
.landing-pricing__card {
  position: relative;
  background: var(--bg);
  border: none;
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-xl), var(--shadow-accent-lg);
  transition: box-shadow var(--transition-normal);
}
.landing-pricing__card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(var(--accent-rgb), 0.4),
    rgba(var(--accent-rgb), 0.1) 50%,
    rgba(var(--accent-rgb), 0.3)
  );
  z-index: -1;
}
.landing-pricing__card--growth::before {
  background: linear-gradient(
    135deg,
    rgba(var(--accent-rgb), 0.2),
    rgba(var(--accent-rgb), 0.05) 50%,
    rgba(var(--accent-rgb), 0.15)
  );
}
.landing-pricing__card--growth {
  box-shadow: var(--shadow-xl);
}
.landing-pricing__card:hover {
  box-shadow: var(--shadow-xl), 0 0 0 4px rgba(var(--accent-rgb), 0.18), 0 4px 16px rgba(var(--accent-rgb), 0.12);
}
.landing-pricing__tier-name {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  margin: 0 0 var(--space-4);
  color: var(--text);
}
.landing-pricing__tagline {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin: 0 0 var(--space-6);
  line-height: 1.5;
}
/* Growth inquiry inline form */
.landing-growth-form {
  width: 100%;
  margin-bottom: var(--space-6);
}
.landing-growth-form__row {
  display: flex;
  gap: var(--space-2);
}
.landing-growth-form__input {
  flex: 1;
  font-family: var(--font-family);
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition-fast);
}
.landing-growth-form__input:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(var(--accent-rgb), 0.2);
}
.landing-growth-form__input::placeholder {
  color: var(--text-tertiary);
}
.landing-growth-form__btn {
  white-space: nowrap;
  font-size: var(--text-sm) !important;
  padding: var(--space-2) var(--space-4) !important;
}
.landing-growth-form__msg {
  font-size: var(--text-xs);
  margin: var(--space-2) 0 0;
  min-height: 1.2em;
}
.landing-growth-form__msg--success {
  color: var(--success);
}
.landing-growth-form__msg--error {
  color: var(--danger);
}

.landing-pricing__toggle {
  display: inline-flex;
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: 2px;
  margin-bottom: var(--space-6);
}
.landing-pricing__tab {
  font-family: var(--font-family);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  padding: var(--space-2) var(--space-5);
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.landing-pricing__tab--active {
  background: var(--accent);
  color: var(--accent-text);
}
.landing-pricing__tab:hover:not(.landing-pricing__tab--active) {
  color: var(--text);
}
.landing-pricing__price {
  margin-bottom: var(--space-2);
}
.landing-pricing__amount {
  font-size: 3.5rem;
  font-weight: var(--weight-bold);
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--text) 60%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.landing-pricing__period {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-left: var(--space-1);
}
.landing-pricing__annual-note {
  display: none;
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-bottom: var(--space-6);
}
.landing-pricing__cta {
  width: 100%;
  font-size: var(--text-base) !important;
  padding: var(--space-3) var(--space-6) !important;
  text-decoration: none !important;
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-accent);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast) !important;
}
.landing-pricing__cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent-lg);
}
.landing-pricing__features {
  text-align: left;
  border-top: 1px solid var(--border);
  padding-top: var(--space-6);
}
.landing-pricing__features h4 {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  margin: 0 0 var(--space-4);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.landing-pricing__features ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.landing-pricing__features li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  padding: var(--space-2) 0;
  color: var(--text-secondary);
}
.landing-pricing__features li svg {
  flex-shrink: 0;
}

/* --- FAQ (container card + animations) --- */
.landing-faq {
  max-width: 640px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-2) var(--space-6);
  box-shadow: var(--shadow-sm);
}
.landing-faq__item {
  border-bottom: 1px solid var(--border);
}
.landing-faq__item:last-child {
  border-bottom: none;
}
.landing-faq__item summary {
  padding: var(--space-5) 0;
  font-weight: var(--weight-medium);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color var(--transition-fast);
}
.landing-faq__item summary:hover {
  color: var(--accent);
}
.landing-faq__item summary::after {
  content: '+';
  font-size: var(--text-lg);
  color: var(--text-tertiary);
  flex-shrink: 0;
  margin-left: var(--space-4);
  transition: transform var(--transition-fast), color var(--transition-fast);
}
.landing-faq__item[open] summary::after {
  content: '+';
  transform: rotate(45deg);
  color: var(--accent);
}
.landing-faq__item summary::-webkit-details-marker { display: none; }
.landing-faq__item p {
  margin: 0 0 var(--space-5);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  font-size: var(--text-sm);
}
/* Fade-in for FAQ answers (graceful degradation) */
@supports (selector(:open)) {
  .landing-faq__item p {
    animation: faq-reveal 0.25s var(--ease-default);
  }
  @keyframes faq-reveal {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

/* --- Footer --- */
.landing-footer {
  padding: var(--space-6) 0;
  border-top: 1px solid var(--border);
}
.landing-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 100%;
  padding: 0 var(--space-8);
}
.landing-footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  color: var(--text);
}
.landing-footer__links {
  display: flex;
  gap: var(--space-6);
  background: none;
  border-bottom: none;
  padding: 0;
}
.landing-footer__links a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.landing-footer__links a:hover {
  color: var(--text);
}

/* --- Light theme overrides --- */
[data-theme="light"] .landing-pricing__card {
  background: var(--surface-raised);
}
[data-theme="light"] .landing-hero__glow {
  opacity: 0.6;
}

/* --- Landing exit transition (universal) --- */
.landing--exiting {
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity var(--duration-fast) var(--ease-default),
              transform var(--duration-fast) var(--ease-default);
  pointer-events: none;
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .stagger-in > * { animation: none !important; opacity: 1 !important; }
  .landing-step,
  .landing-hero__cta,
  .landing-pricing__cta,
  .landing-nav__cta { transition: none !important; }
  .landing-step:hover,
  .landing-hero__cta.btn-primary:hover,
  .landing-pricing__cta:hover { transform: none !important; }
  .landing-faq__item p { animation: none !important; }
  .landing--exiting { opacity: 1; transform: none; transition: none; }
  ::view-transition-old(covren-logo),
  ::view-transition-new(covren-logo),
  ::view-transition-old(root),
  ::view-transition-new(root) { animation: none !important; }
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .landing-hero__sub {
    font-size: var(--text-base);
  }
  .landing-hero__glow {
    width: 500px;
    height: 500px;
  }
  .landing-steps {
    flex-direction: column;
    align-items: center;
  }
  .landing-step {
    max-width: 100%;
  }
  .landing-step__arrow {
    transform: rotate(90deg);
    margin: 0;
    align-self: center;
  }
  .landing-nav__links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: color-mix(in srgb, var(--bg) 95%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: var(--space-4) var(--space-6);
    gap: var(--space-4);
  }
  .landing-nav__links--open {
    display: flex;
  }
  .landing-nav__mobile-toggle {
    display: block;
  }
  .landing-nav {
    position: relative;
  }
}

@media (max-width: 480px) {
  .landing-hero {
    padding: var(--space-8) 0;
  }
  .landing-hero__glow {
    width: 350px;
    height: 350px;
  }
  .landing-section {
    padding: var(--space-8) 0;
  }
  .landing-container {
    padding: 0 var(--space-4);
  }
  .landing-pricing {
    grid-template-columns: 1fr;
  }
  .landing-pricing__card {
    padding: var(--space-6);
  }
  .landing-footer__inner {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}