/* === Landing page overrides === */
html:has(.landing-nav) {
  background: var(--surface-page-light);
  overflow: hidden;
  height: 100vh;
}

body:has(.landing-nav) {
  color: var(--text-primary);
  background: var(--surface-page-light);
  overflow: hidden;
  height: 100vh;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(147, 51, 234, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(251, 188, 5, 0.03) 0%, transparent 60%);
  background-attachment: fixed;
}

/* === Full-page scroll snap === */
.landing-scroll {
  height: 100vh;
  overflow-y: auto;
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
}

.landing-snap-section {
  min-height: 100vh;
  min-height: 100dvh;
  scroll-snap-align: start;
}

body:has(.landing-nav) a {
  color: var(--color-gray-600);
}

body:has(.landing-nav) a:hover {
  color: var(--text-primary);
}

/* === Navbar (glass) === */
.landing-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: var(--glass-blur-xl);
  -webkit-backdrop-filter: var(--glass-blur-xl);
  background: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-panel-shadow), var(--glass-panel-inset);
  transition: all var(--duration-normal) var(--ease-default);
}

.landing-nav.scrolled {
  background: var(--surface-glass-strong);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.landing-nav .container {
  max-width: none;
  padding-inline: var(--space-8);
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.nav-left,
.nav-center,
.nav-right {
  flex: 1;
  min-width: 0;
}

.nav-left {
  display: flex;
  align-items: center;
}

.nav-right {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: var(--font-bold);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-logo-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-gradient);
  color: white;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.nav-logo-icon i {
  font-size: 1rem;
  line-height: 1;
}

.nav-center {
  gap: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-cta {
  background: var(--color-gray-900);
  color: #ffffff;
  border-radius: var(--radius-2xl);
  padding: 0.65rem 1.75rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: var(--font-semibold);
  transition: all var(--duration-normal) var(--ease-default);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.nav-cta:hover {
  background: var(--color-primary-600);
  color: #ffffff;
  transform: translateY(-1px);
}

/* === Hero === */
.hero {
  min-height: 100vh;
  padding: 0;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  background: transparent;
}

.hero::before {
  content: "";
  position: absolute;
  width: 40%;
  height: 40%;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.15);
  top: -10%;
  left: -10%;
  pointer-events: none;
  filter: blur(120px);
  animation: float-1 20s ease-in-out infinite;
}

.hero::after {
  content: "";
  position: absolute;
  width: 40%;
  height: 40%;
  border-radius: 50%;
  background: rgba(147, 51, 234, 0.12);
  bottom: -10%;
  right: -10%;
  pointer-events: none;
  filter: blur(120px);
  animation: float-2 25s ease-in-out infinite;
}

.hero-content {
  max-width: 55rem;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 6vw, 4.5rem);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.03em;
  line-height: var(--leading-tight);
  white-space: nowrap;
  animation: fade-in-up 0.8s 0.15s var(--ease-default) both;
}

.hero h1 em {
  font-style: normal;
  color: var(--color-primary-500);
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-10);
  margin-inline: auto;
  animation: fade-in-up 0.8s 0.3s var(--ease-default) both;
}

/* === Landing search box === */
.landing-search-wrap {
  max-width: 640px;
  margin: 0 auto;
  width: 100%;
  animation: fade-in-up 0.8s 0.45s var(--ease-default) both;
}

.landing-search-wrap .search-input-wrap {
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.3);
}

.landing-search-wrap .search-input-wrap:focus-within {
  box-shadow: var(--shadow-xl), 0 0 0 3px var(--color-primary-100);
}

/* === Example query chips === */
.landing-examples {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
  animation: fade-in-up 0.8s 0.6s var(--ease-default) both;
}

.landing-example-chip {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-2xl);
  background: var(--glass-card-bg);
  border: 1px solid var(--glass-card-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-default);
  font-family: var(--font-sans);
}

.landing-example-chip:hover {
  background: rgba(255, 255, 255, 0.8);
  border-color: var(--color-primary-300);
  color: var(--color-primary-700);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
}

/* === Scroll arrow (reused for hero -> why) === */
.section-nav-arrow {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--glass-card-bg);
  border: 1px solid var(--glass-card-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-default);
  animation: bounce-arrow 2s ease-in-out infinite;
  color: var(--color-primary-500);
  font-size: 1.25rem;
}

.section-nav-arrow:hover {
  background: rgba(255, 255, 255, 0.85);
  border-color: var(--color-primary-300);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.2);
  transform: translateX(-50%) translateY(-2px);
  animation: none;
}

@keyframes bounce-arrow {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* Up-arrow variant (top of section) */
.section-nav-arrow--up {
  bottom: auto;
  top: 2rem;
  animation-name: bounce-arrow-up;
}

.section-nav-arrow--up:hover {
  transform: translateX(-50%) translateY(2px);
}

@keyframes bounce-arrow-up {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-6px); }
}

/* === Section dots indicator === */
.section-dots {
  position: fixed;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.section-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-gray-300);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-default);
  padding: 0;
}

.section-dot:hover {
  background: var(--color-primary-400);
  transform: scale(1.3);
}

.section-dot.active {
  background: var(--color-primary-500);
  transform: scale(1.3);
  box-shadow: 0 0 8px rgba(59, 130, 246, 0.4);
}

/* === Why section (below the fold, full-page) === */
.landing-why {
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: 6rem 0 0;
}

.landing-why .container {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 1200px;
  margin: 0 auto;
  padding-inline: var(--space-8);
}

.landing-why .landing-footer {
  flex-shrink: 0;
}

/* === How It Works steps === */
.landing-steps-header {
  text-align: center;
  margin: var(--space-12) 0 var(--space-8);
}

.landing-steps-header h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.landing-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  position: relative;
}

.landing-steps::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 16.6%;
  right: 16.6%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--glass-card-border), var(--glass-card-border), transparent);
}

.landing-step {
  text-align: center;
  position: relative;
}

.landing-step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--glass-card-bg);
  border: 1px solid var(--glass-card-border);
  color: var(--color-primary-500);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  position: relative;
  z-index: 1;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--glass-panel-shadow);
}

.landing-step-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.landing-step-desc {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  line-height: var(--leading-relaxed);
  margin: 0;
}

/* === Section header (reused) === */
.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-12);
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.section-header p {
  font-size: var(--text-lg);
  color: var(--color-gray-500);
  line-height: var(--leading-relaxed);
}

/* === Features (glass cards) === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

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

.feature-card {
  background: var(--glass-card-bg);
  border: 1px solid var(--glass-card-border);
  border-radius: var(--radius-3xl);
  padding: var(--space-8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--duration-slow) var(--ease-default);
}

.feature-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow-glass-hover);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(-3deg);
  transition: transform 0.4s var(--ease-spring);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: var(--space-5);
}

.feature-icon i {
  font-size: 1.2rem;
  line-height: 1;
}

.feature-icon-primary {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.15);
  color: var(--color-primary-500);
}

.feature-icon-accent {
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.15);
  color: var(--color-accent-500);
}

.feature-icon-info {
  background: rgba(96, 165, 250, 0.1);
  border: 1px solid rgba(96, 165, 250, 0.15);
  color: var(--color-info);
}

.feature-icon-success {
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.15);
  color: var(--color-success);
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.feature-card p {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  line-height: var(--leading-relaxed);
}

/* === Footer (light) === */
.landing-footer {
  background: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-200);
  padding: 4rem 0;
}

.footer-content {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 4rem;
}

.footer-brand-block {
  max-width: 22rem;
}

.footer-brand-name {
  font-family: var(--font-display);
  font-weight: var(--font-bold);
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links span {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-primary-500);
  font-weight: var(--font-bold);
  margin-bottom: 0.3rem;
}

.footer-links a {
  color: var(--color-gray-500);
  font-size: 0.78rem;
  font-weight: var(--font-medium);
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* === Responsive === */
@media (max-width: 768px) {
  .hero {
    min-height: 100vh;
    min-height: 100dvh;
    padding-top: 72px;
    padding-bottom: var(--space-8);
  }

  .hero h1 {
    font-size: clamp(1.6rem, 6vw, var(--text-3xl));
  }

  .hero-subtitle {
    font-size: var(--text-base);
  }

  .landing-search-wrap {
    padding-inline: var(--space-2);
  }

  .landing-examples {
    gap: var(--space-2);
  }

  .landing-example-chip {
    font-size: 0.8rem;
    padding: var(--space-1) var(--space-3);
  }

  .features-grid,
  .landing-why-grid {
    grid-template-columns: 1fr;
  }

  .landing-steps {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .landing-steps::before {
    display: none;
  }

  .landing-steps-header {
    margin: var(--space-8) 0 var(--space-6);
  }

  .nav-center {
    display: none;
  }

  .landing-nav .container {
    padding-inline: 1rem;
    height: 72px;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--space-4);
    text-align: left;
  }

  .section-dots {
    right: 0.75rem;
  }

  .section-dot {
    width: 8px;
    height: 8px;
  }

  .landing-why {
    padding: 4rem 0 0;
  }
}

/* === Login Modal === */
.login-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.login-overlay-visible {
  opacity: 1;
}

.login-dialog {
  position: relative;
  width: 100%;
  max-width: 480px;
  margin: 1rem;
  background: var(--surface-glass-light-strong);
  backdrop-filter: var(--glass-blur-strong);
  -webkit-backdrop-filter: var(--glass-blur-strong);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-3xl);
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.18);
  padding: 2.5rem 2.5rem 2rem;
  transform: translateY(12px) scale(0.97);
  transition: transform 0.3s var(--ease-spring);
}

.login-overlay-visible .login-dialog {
  transform: translateY(0) scale(1);
}

.login-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  border: none;
  font-size: 1.25rem;
  color: var(--color-gray-500);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast) var(--ease-default);
}

.login-close:hover {
  background: rgba(255, 255, 255, 0.8);
  color: var(--text-primary);
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: var(--font-bold);
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.login-subtitle {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  line-height: 1.5;
}

.login-providers {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 1.5rem;
}

.login-empty {
  margin: -0.5rem 0 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-gray-500);
}

.login-provider-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.875rem 1.25rem;
  border: 1px solid var(--glass-card-border);
  border-radius: var(--radius-2xl);
  background: rgba(255, 255, 255, 0.5);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: var(--font-medium);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-default);
}

.login-provider-btn:hover {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(255, 255, 255, 0.8);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}

.login-provider-btn:active {
  transform: scale(0.98);
}

.login-provider-btn:disabled {
  opacity: 0.6;
  cursor: wait;
}

.login-provider-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.login-provider-icon svg {
  display: block;
}

.login-provider-loading {
  position: relative;
}

.login-provider-loading::after {
  content: "";
  position: absolute;
  right: 1rem;
  top: 50%;
  width: 18px;
  height: 18px;
  margin-top: -9px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--color-primary-500);
  border-radius: 50%;
  animation: login-spin 0.6s linear infinite;
}

@keyframes login-spin {
  to { transform: rotate(360deg); }
}

.login-terms {
  text-align: center;
  font-size: 0.72rem;
  color: var(--color-gray-400);
  line-height: 1.5;
}

.login-terms a {
  color: var(--color-primary-500);
  text-decoration: none;
  font-weight: var(--font-medium);
}

.login-terms a:hover {
  text-decoration: underline;
}