:root {
  --bg-color: #ffffff;
  --text-color: #111111;
  --text-muted: #666666;
  --accent-color: #2D5BFF;
  --accent-hover: #1e45db;
  --border-color: #eeeeee;
  --card-bg: #fafafa;
  --border-radius: 16px;
  --container-max-width: 1200px;
  --section-padding: 6rem 1.5rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: var(--accent-color);
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-hover);
}

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography */
h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

p.subtitle {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* Buttons */
.button-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  font-size: 1rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.button-primary {
  background-color: var(--text-color);
  color: white;
}

.button-primary:hover {
  background-color: #000;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.button-secondary {
  background-color: transparent;
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.button-secondary:hover {
  background-color: var(--card-bg);
  color: var(--text-color);
}

/* Hero Section */
.hero {
  padding: 8rem 1.5rem 4rem;
  text-align: center;
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero-branding {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 1rem;
  display: block;
}

.accent-dot {
  color: var(--accent-color);
}

.hero-mockup {
  margin-top: 5rem;
  position: relative;
  width: 100%;
  max-width: 800px;
}

.hero-mockup img {
  width: 100%;
  height: auto;
  border-radius: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
  /* Placeholder background for when there's no real image yet */
  background-color: var(--card-bg);
  min-height: 400px;
  object-fit: cover;
  border: 1px solid var(--border-color);
}

/* Screenshots Section */
.screenshots {
  padding: var(--section-padding);
  background-color: var(--card-bg);
  text-align: center;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.screenshot-card {
  position: relative;
}

.screenshot-card img {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease;
  /* Placeholder style */
  background-color: white;
  min-height: 500px;
  object-fit: cover;
}

.screenshot-card:hover img {
  transform: translateY(-5px);
}

/* Features Section */
.features-section {
  padding: var(--section-padding);
  background-color: var(--bg-color);
}

.feature-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
  margin-bottom: 8rem;
}

.feature-row.reverse {
  flex-direction: row-reverse;
}

.feature-row:last-child {
  margin-bottom: 0;
}

.feature-text {
  flex: 1;
}

.feature-text h2 {
    margin-bottom: 1.5rem;
}

.feature-image {
  flex: 1;
}

.feature-img-landscape {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-color);
  object-fit: cover;
  background-color: var(--card-bg);
}

.feature-img-portrait {
  width: 100%;
  max-width: 320px;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-color);
  object-fit: cover;
  background-color: var(--card-bg);
}

/* Simple Sections (Privacy, Support, Donation) */
.simple-section {
  padding: var(--section-padding);
  text-align: center;
}

.card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 4rem 2rem;
  max-width: 800px;
  margin: 0 auto;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card p {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

/* Contact Form */
.support-form {
  max-width: 500px;
  margin: 0 auto;
  text-align: left;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-family: inherit;
  font-size: 1rem;
  background-color: var(--card-bg);
  transition: all 0.2s ease;
  color: var(--text-color);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  background-color: white;
  box-shadow: 0 0 0 3px rgba(45, 91, 255, 0.1);
}

/* Footer */
.footer {
  padding: 4rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--border-color);
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

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

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

.copyright {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Responsive utilities */
@media (max-width: 768px) {
  .hero {
    padding-top: 6rem;
  }
  
  .button-group {
    flex-direction: column;
    padding: 0 2rem;
  }
  
  .button {
    width: 100%;
  }

  .screenshots-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  .feature-row,
  .feature-row.reverse {
    flex-direction: column;
    gap: 3rem;
    margin-bottom: 6rem;
    text-align: center;
  }
}