/* Shared design tokens (colors, shadows, radii, gradients) */
@import '../common.css';
/* Import refined typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* Landing-page color palette, surfaces, and scales */
:root {
  /* Map common tokens into landing palette names */
  --primary-600: var(--color-button-dark);
  --primary-500: var(--color-button);
  --neutral-800: var(--color-text);
  --success: var(--color-success);
  --error: var(--color-error);

  /* Extended brand palette — derived from common tokens */
  --primary-400: var(--color-button-light);
  --primary-300: var(--color-button-pale);
  --primary-100: rgba(var(--color-button-rgb), 0.1);
  --primary-50: rgba(var(--color-button-rgb), 0.05);

  /* Accent — derived from common tokens */
  --accent-500: var(--color-accent);
  --accent-400: var(--color-accent-light);

  /* Neutral scale */
  --neutral-950: #0f1419;
  --neutral-900: #1a202c;
  --neutral-700: #4a5568;
  --neutral-600: #718096;
  --neutral-500: #a0aec0;
  --neutral-200: #edf2f7;
  --neutral-100: #f7fafc;
  --neutral-50: var(--bg-page);

  /* Semantic light variants — derived from common tokens */
  --success-light: rgba(var(--color-success-rgb), 0.12);
  --error-light: rgba(var(--color-error-rgb), 0.12);

  /* Glass morphism */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --glass-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);

  /* Shadow scale */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.1);

  /* Extended radius scale */
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Gradients - cohesive light blue palette */
  --gradient-hero: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 25%, #dbeafe 50%, #c7d2fe 75%, #93c5fd 100%);
  --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.95) 0%, rgba(241,245,249,0.98) 100%);
  --gradient-accent: linear-gradient(135deg, rgba(var(--color-accent-rgb), 0.2) 0%, rgba(var(--color-accent-rgb), 0.08) 100%);
  --gradient-mesh: radial-gradient(ellipse at 20% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
                    radial-gradient(ellipse at 80% 80%, rgba(147, 197, 253, 0.08) 0%, transparent 50%);

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* Typography scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
}

/* Base reset */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--neutral-800);
  background: var(--neutral-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container - refined width */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* Typography hierarchy */
h1 {
  font-size: var(--text-5xl);
  font-weight: 700;
  line-height: 1.1;
  color: var(--neutral-950);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.2;
  color: var(--neutral-900);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1.3;
  color: var(--neutral-800);
}

p {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--neutral-600);
}

a {
  text-decoration: none;
  color: inherit;
}

.about-text a {
  color: var(--primary-600);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

.about-text a:hover {
  color: var(--primary-500);
  text-decoration-thickness: 2px;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

/* Section base - consistent cohesive background */
section {
  padding: var(--space-12) 0;
  position: relative;
}

/* Subtle mesh gradient overlay for depth */
section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-mesh);
  pointer-events: none;
  opacity: 0.5;
}

section > .container {
  position: relative;
  z-index: 1;
}

/* Header - Glass morphism effect */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-xs);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  position: relative;
}

.logo {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 0 1 auto;
}

.logo .landing-app-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: block;
}

.logo h1 {
  margin: 0;
  flex: 0 1 auto;
  min-width: 0;
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--primary-600);
  letter-spacing: -0.02em;
  white-space: nowrap;
  visibility: hidden;
  display: flex;
  align-items: center;
}

.logo h1.logo-ready {
  visibility: visible;
}

.logo-title-part-1, .logo-title-part-2 {
  font-weight: 700;
}

.logo-title-dash {
  display: none;
}

@media (min-width: 769px) {
  .logo-title-part-2 {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    font-size: var(--text-2xl);
  }
}

@media (max-width: 768px) {
  .logo {
    justify-content: center;
    width: 100%;
  }
  .logo h1 {
    justify-content: center;
    width: auto;
  }
  .logo-title-dash {
    display: inline;
    white-space: pre;
  }
}

nav ul {
  display: flex;
  align-items: center;
  /* Fluid gap: 32px at 1000px wide, ~10.67px (1/3) at 768px wide */
  gap: clamp(10.67px, calc(10.67px + (32 - 10.67) * (100vw - 768px) / (1000 - 768)), var(--space-8));
}

nav ul li a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--neutral-600);
  padding: var(--space-2) 0;
  position: relative;
}

nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-500);
  transition: width 0.3s ease;
}

nav ul li a:hover::after {
  width: 100%;
}

nav ul li a:hover {
  color: var(--primary-600);
}

/* Hero Section - Sophisticated gradient, compact to keep CTA above fold */
.hero {
  background: var(--gradient-hero);
  padding: var(--space-10) 0 var(--space-8) 0;
  display: flex;
  align-items: center;
}

.hero::before {
  opacity: 0.7;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.hero-title {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: 0;
}

.hero-content h1 {
  font-size: var(--text-5xl);
  font-weight: 800;
  background: linear-gradient(135deg, var(--neutral-950) 0%, var(--primary-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content h2 {
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--neutral-700);
  letter-spacing: -0.01em;
}

.hero-content p {
  font-size: var(--text-base);
  color: var(--neutral-600);
  max-width: 540px;
  line-height: 1.6;
  margin-bottom: var(--space-2);
}

/* CTA Button - Refined elevated design */
.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-cta);
  color: white;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--text-base);
  box-shadow: var(--shadow-cta);
  letter-spacing: 0.01em;
}

/* Hero image with glass effect */
.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image img {
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

/* Original Disclaimer Section styles - kept for compatibility but not used on landing */
.disclaimer {
  background: var(--neutral-100);
}

.disclaimer-box {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  box-shadow: var(--glass-shadow);
}

.disclaimer-box h2 {
  text-align: center;
  margin-bottom: var(--space-8);
  font-size: var(--text-2xl);
  color: var(--neutral-900);
}

.disclaimer-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.disclaimer-item {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  background: var(--gradient-card);
  border: 1px solid var(--neutral-200);
  box-shadow: var(--shadow-sm);
}

.disclaimer-item:first-child {
  background: linear-gradient(145deg, var(--success-light) 0%, rgba(255,255,255,0.9) 100%);
  border-color: rgba(16, 185, 129, 0.2);
}

.disclaimer-item:last-child {
  background: linear-gradient(145deg, var(--error-light) 0%, rgba(255,255,255,0.9) 100%);
  border-color: rgba(239, 68, 68, 0.2);
}

.disclaimer-item h3 {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  font-size: var(--text-lg);
  font-weight: 600;
}

.disclaimer-item h3 i {
  font-size: var(--text-base);
}

.disclaimer-item:first-child h3 {
  color: var(--success);
}

.disclaimer-item:last-child h3 {
  color: var(--error);
}

.disclaimer-item p {
  font-size: var(--text-base);
  color: var(--neutral-600);
  line-height: 1.7;
}

/* De-emphasized disclaimer at bottom */
.disclaimer-bottom {
  background: var(--neutral-100);
  padding: var(--space-8) 0;
}

.disclaimer-simple {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.disclaimer-simple p {
  font-size: var(--text-sm);
  color: var(--neutral-500);
  line-height: 1.6;
}

.disclaimer-simple i {
  color: var(--primary-400);
  margin-right: var(--space-2);
}

.disclaimer-simple strong {
  color: var(--neutral-600);
  font-weight: 600;
}

/* Features Section - Modern elevated cards */
.features {
  background: linear-gradient(180deg, #f0f9ff 0%, #e0f2fe 100%);
}

.features h2 {
  text-align: center;
  margin-bottom: var(--space-12);
  font-size: var(--text-3xl);
  color: var(--neutral-900);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.feature-card {
  background: var(--gradient-card);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-500), var(--accent-500));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: var(--gradient-cta);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
  box-shadow: var(--shadow-cta);
}

.feature-icon i {
  font-size: var(--text-2xl);
  color: white;
}

.feature-card h3 {
  margin-bottom: var(--space-3);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--neutral-900);
}

.feature-card p {
  font-size: var(--text-sm);
  color: var(--neutral-600);
  line-height: 1.6;
}

/* How It Works Section - Connected steps */
.how-it-works {
  background: linear-gradient(180deg, #e0f2fe 0%, #dbeafe 100%);
}

.how-it-works h2 {
  text-align: center;
  margin-bottom: var(--space-12);
  font-size: var(--text-3xl);
  color: var(--neutral-900);
}

.steps {
  display: flex;
  flex-direction: column;
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  gap: 0;
}

.step {
  padding: var(--space-3) 0;
  position: relative;
}

.step:first-child {
  padding-top: 0;
}

.step:last-child {
  padding-bottom: 0;
}

.step-content {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.step-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-500), var(--accent-500));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.step-content:hover::before {
  opacity: 1;
}

.step-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.step-number {
  background: var(--gradient-cta);
  color: white;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
  box-shadow: var(--shadow-cta);
}

.step-header h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--neutral-900);
  margin: 0;
}

.step-content p {
  font-size: var(--text-sm);
  color: var(--neutral-600);
  line-height: 1.6;
  padding-left: calc(32px + var(--space-3));
}

/* About Section - Refined text layout */
.about {
  background: linear-gradient(135deg, #dbeafe 0%, #f0f9ff 100%);
  padding: var(--space-12) 0;
}

.about h2 {
  text-align: center;
  margin-bottom: var(--space-12);
  font-size: var(--text-3xl);
  color: var(--neutral-900);
}

.about-content {
  max-width: 680px;
  margin: 0 auto;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.about-text p {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--neutral-700);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--glass-bg);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.about-text p::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-500), var(--accent-500));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.about-text p:hover::before {
  opacity: 1;
}

.about-text p i {
  color: var(--primary-500);
  font-size: var(--text-lg);
  flex-shrink: 0;
  width: 24px;
  text-align: center;
  margin-top: 2px;
}

/* CTA Section - Gradient with glass card */
.cta {
  background: linear-gradient(135deg, #e0f2fe 0%, #bfdbfe 50%, #93c5fd 100%);
  position: relative;
  overflow: hidden;
}

.cta::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(var(--color-button-rgb), 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta .container {
  position: relative;
  z-index: 1;
  text-align: center;
}

.cta-content {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-12) var(--space-8);
  box-shadow: var(--glass-shadow-lg);
  max-width: 600px;
  margin: 0 auto;
}

.cta h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-6);
  color: var(--neutral-900);
}

.cta .cta-button {
  box-shadow: 0 4px 16px rgba(var(--color-button-rgb), 0.4),
              0 2px 4px rgba(var(--color-button-rgb), 0.22);
}

/* Footer - Subtle refined */
footer {
  background: var(--neutral-100);
  border-top: 1px solid var(--neutral-200);
  padding: var(--space-10) 0;
}

footer .container {
  text-align: center;
}

footer p {
  font-size: var(--text-sm);
  color: var(--neutral-500);
}

/* Desktop-only styles */
@media (min-width: 769px) {
  .hero-content {
    text-align: center;
    align-items: center;
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero .container {
    gap: var(--space-6);
  }

  .hero-content h1 {
    font-size: var(--text-4xl);
  }

  .hero-content h2 {
    font-size: var(--text-xl);
  }

  .hero-image img {
    max-height: 250px;
  }
}

@media (max-width: 768px) {
  :root {
    --text-6xl: 2.5rem;
    --text-5xl: 2rem;
    --text-3xl: 1.5rem;
    --text-2xl: 1.25rem;
  }

  section {
    padding: var(--space-8) 0;
  }

  header .container {
    flex-direction: column;
    gap: var(--space-0);
    padding: var(--space-3) var(--space-4);
  }

  nav ul {
    gap: var(--space-8);
  }

  .hero {
    min-height: auto;
    padding: var(--space-8) 0;
  }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-6);
  }

  .hero-content {
    align-items: center;
    gap: var(--space-3);
  }

  .hero-title {
    justify-content: center;
    gap: var(--space-3);
  }

  .hero-content p {
    max-width: 100%;
    font-size: var(--text-sm);
  }

  .hero-image {
    order: -1;
  }

  .hero-image img {
    max-width: 70%;
    max-height: 200px;
    object-fit: contain;
  }

  .disclaimer-content {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .step-number {
    width: 28px;
    height: 28px;
    font-size: var(--text-xs);
  }

  .step-header {
    gap: var(--space-2);
  }

  .step-content p {
    padding-left: calc(28px + var(--space-2));
  }

  .about-text p {
    font-size: var(--text-sm);
  }

  .cta-content {
    padding: var(--space-8) var(--space-6);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }

  .disclaimer-box {
    padding: var(--space-6);
  }

  .hero-title {
    flex-direction: column;
    gap: var(--space-3);
  }
}

[data-scroll-to] {
  cursor: pointer;
}