/* ============================================
   Plus One Daily — Company Website Styles
   ============================================ */

/* --- CSS Variables --- */
:root {
  --color-bg: #050505;
  --color-surface: #0a0a0a;
  --color-surface-2: #111111;
  --color-surface-3: #1a1a1a;
  --color-border: #222222;
  --color-border-light: #2a2a2a;
  --color-text: #f0f0f0;
  --color-text-secondary: #999999;
  --color-text-muted: #666666;
  --color-primary: #00d4aa;
  --color-primary-dark: #00b894;
  --color-primary-glow: rgba(0, 212, 170, 0.15);
  --color-accent: #00f0c0;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1100px;
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

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

img {
  max-width: 100%;
  display: block;
}

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Section Common --- */
.section {
  padding: 100px 0;
}

.section-header {
  margin-bottom: 56px;
}

.section-header.centered {
  text-align: center;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding: 6px 14px;
  background: var(--color-primary-glow);
  border-radius: 100px;
}

.section-header h2 {
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.section-desc {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 16px auto 0;
  line-height: 1.7;
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all var(--transition);
}

.navbar.scrolled {
  background: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 14px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--color-primary);
  color: var(--color-bg);
  font-weight: 800;
  font-size: 0.95rem;
  border-radius: 10px;
  letter-spacing: -0.02em;
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 36px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition);
  position: relative;
}

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

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  padding: 8px 20px;
  border: 1px solid rgba(0, 212, 170, 0.25);
  border-radius: 100px;
  margin-bottom: 32px;
  background: rgba(0, 212, 170, 0.06);
}

.hero h1 {
  font-size: 4.5rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary), #00f0c0, #40e0d0);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  max-width: 580px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

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

.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-family);
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-accent);
  color: var(--color-bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 170, 0.3);
}

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

.btn-secondary:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
  transform: translateY(-2px);
}

/* --- About Section --- */
.about-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.about-card {
  padding: 36px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.about-card:hover {
  border-color: var(--color-border-light);
  transform: translateY(-4px);
}

.about-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--color-primary-glow);
  color: var(--color-primary);
  border-radius: 14px;
  margin-bottom: 20px;
}

.about-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.about-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- Mission Section --- */
.mission-section {
  background: var(--color-bg);
}

.mission-content {
  max-width: 720px;
}

.mission-text {
  margin-bottom: 40px;
}

.mission-text p {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.mission-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-align: center;
}

.stat-icon {
  font-size: 1.6rem;
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  letter-spacing: 0.02em;
}

/* --- Product Section --- */
.product-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.product-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 48px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.product-visual {
  display: flex;
  justify-content: center;
}

.phone-mockup {
  width: 240px;
  height: 480px;
  background: var(--color-surface-3);
  border: 2px solid var(--color-border-light);
  border-radius: 36px;
  padding: 12px;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #0d1117 0%, #0a0f14 100%);
  border-radius: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.app-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.app-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: var(--color-primary);
  color: var(--color-bg);
  font-weight: 800;
  font-size: 1.6rem;
  border-radius: 18px;
  letter-spacing: -0.02em;
}

.app-tagline {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.coming-soon-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  padding: 8px 16px;
  background: var(--color-primary-glow);
  border-radius: 100px;
  margin-bottom: 20px;
}

.product-info h3 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.product-info p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.feature-list li svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* --- Contact Section --- */
.contact-section {
  background: var(--color-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.contact-card {
  text-align: center;
  padding: 36px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: var(--color-border-light);
  transform: translateY(-4px);
}

.contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--color-primary-glow);
  color: var(--color-primary);
  border-radius: 16px;
  margin-bottom: 18px;
}

.contact-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.contact-link {
  font-size: 0.9rem;
  color: var(--color-primary);
  word-break: break-all;
}

.contact-detail {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* --- Footer --- */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand .logo-icon {
  width: 30px;
  height: 30px;
  font-size: 0.75rem;
  border-radius: 8px;
}

.footer-brand .logo-text {
  font-size: 0.95rem;
}

.footer-legal {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .hero h1 {
    font-size: 3.2rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 36px 24px;
  }

  .product-info {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .feature-list {
    align-items: flex-start;
    text-align: left;
  }

  .mission-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 100px 20px 60px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section {
    padding: 72px 0;
  }

  .section-header h2 {
    font-size: 2rem;
  }

  .nav-links {
    display: none;
  }

  .product-card {
    padding: 28px 20px;
    gap: 36px;
  }

  .phone-mockup {
    width: 200px;
    height: 400px;
  }

  .footer-content {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }

  .mission-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}