/*
 * Virtual Buttons - Minimalist Landing Page Stylesheet
 * Colors and styles directly from Android resources (colors.xml, themes.xml)
 */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --color-primary: #0D62B6;
  --color-primary-light: #63a4ff;
  --color-primary-dark: #004ba0;
  --color-secondary: #00e5ff;
  --color-secondary-light: #6effff;
  
  --bg-page: #0b111e;
  --bg-card: #131b2e;
  --bg-card-hover: #18233c;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: rgba(99, 164, 255, 0.15);
  --border-hover: rgba(0, 229, 255, 0.4);
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
}

body {
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  padding: 24px 0;
  border-bottom: 1px solid var(--border-color);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-main);
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.header-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.header-link:hover {
  color: var(--color-secondary);
}

/* Hero */
.hero {
  padding: 80px 0 60px;
  text-align: center;
}

.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: 24px;
  margin-bottom: 24px;
  box-shadow: 0 10px 30px rgba(13, 98, 182, 0.4), 0 0 20px rgba(0, 229, 255, 0.25);
  transition: transform 0.3s ease;
}

.hero-icon:hover {
  transform: scale(1.05);
}

.hero-tag {
  display: inline-block;
  background: rgba(0, 229, 255, 0.1);
  color: var(--color-secondary);
  border: 1px solid rgba(0, 229, 255, 0.25);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 18px;
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero-title span {
  background: linear-gradient(135deg, #ffffff 40%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(13, 98, 182, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 229, 255, 0.35);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-secondary);
}

/* Features Grid */
.features-section {
  padding: 60px 0 80px;
}

.section-title {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 40px;
  letter-spacing: -0.02em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  transition: all 0.25s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

.feature-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.feature-icon {
  font-size: 1.5rem;
}

.feature-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
}

.feature-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Quick Specs Strip */
.specs-section {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 36px 0;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
  text-align: center;
}

.spec-item h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 4px;
}

.spec-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Footer */
.footer {
  margin-top: auto;
  padding: 36px 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
}

.footer a {
  color: var(--color-secondary);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  .hero-title {
    font-size: 2.1rem;
  }
  .hero {
    padding: 50px 0 40px;
  }
}