/* =========================================================
   Landing Page Styles - Refined Design
   ========================================================= */

:root {
  /* Brand Colors - Professional Navy & Blue */
  --primary-color: #0f2350;
  --accent-color: #0066cc;
  --accent-hover: #0052a3;

  /* Text Colors */
  --text-main: #333333;
  --text-light: #666666;
  --text-muted: #999999;

  /* Background Colors */
  --bg-white: #ffffff;
  --bg-light: #f4f7fa;
  --bg-gradient: linear-gradient(180deg, #ffffff 0%, #f4f7fa 100%);

  /* Border Colors */
  --border-light: #eaeaea;
  --border-medium: #dddddd;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 80px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 6px rgba(0, 102, 204, 0.15);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 12px 24px rgba(0, 0, 0, 0.12);

  /* Typography */
  --font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;

  /* Transitions */
  --transition: all 0.3s ease;
}

/* =========================================================
   Reset & Base Styles
   ========================================================= */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--text-main);
  line-height: 1.6;
  background-color: var(--bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* =========================================================
   Container
   ========================================================= */

.container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* =========================================================
   Header - Sticky & Clean
   ========================================================= */

.landing-header {
  height: 70px;
  display: flex;
  align-items: center;
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.logo-section {
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-color);
  margin: 0;
  letter-spacing: 0.02em;
  transition: var(--transition);
}

.site-title:hover {
  color: var(--accent-color);
}

.site-tagline {
  display: none; /* Simplified header - hide tagline */
}

/* Header Navigation */
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.header-nav a {
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

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

.header-nav a[href*="forms"] {
  background-color: transparent;
  color: var(--accent-color);
  border: 1px solid var(--accent-color);
  padding: 10px 24px;
}

.header-nav a[href*="forms"]:hover {
  background-color: var(--accent-color);
  color: var(--bg-white);
}

/* =========================================================
   Main Content
   ========================================================= */

.landing-main {
  flex: 1;
}

/* =========================================================
   Hero Section
   ========================================================= */

.hero-section {
  text-align: center;
  padding: 100px var(--spacing-lg) 80px;
  background: var(--bg-gradient);
}

.hero-content {
  max-width: 1000px;
  margin: 0 auto;
}

.hero-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 24px;
  line-height: 1.4;
  letter-spacing: 0.05em;
}

.hero-description {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 40px;
  line-height: 1.8;
}

/* CTA Buttons */
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--bg-white);
  border-color: var(--accent-color);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--bg-white);
  color: var(--accent-color);
  border-color: var(--accent-color);
}

.btn-secondary:hover {
  background-color: #e6f0fa;
}

/* =========================================================
   Features Section
   ========================================================= */

.features-section {
  padding: 80px var(--spacing-lg);
  background-color: var(--bg-white);
}

.section-title {
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 50px;
  position: relative;
  padding-bottom: 15px;
}

/* Title underline decoration */
.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background-color: var(--accent-color);
  border-radius: 2px;
}

.features-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
}

.feature-card {
  background: var(--bg-white);
  padding: 30px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow);
  transition: var(--transition);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent-color);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.feature-description {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  text-align: left;
}

/* =========================================================
   About Section
   ========================================================= */

.about-section {
  padding: 60px var(--spacing-lg) 100px;
  background-color: var(--bg-white);
}

.about-section .section-title {
  margin-bottom: 40px;
}

.about-content {
  max-width: 700px;
  margin: 0 auto;
  background-color: var(--bg-light);
  padding: 60px 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.about-content p {
  font-size: 15px;
  color: var(--text-main);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-content p:last-child {
  margin-bottom: 0;
}

/* =========================================================
   Footer
   ========================================================= */

.landing-footer {
  background-color: var(--primary-color);
  color: var(--bg-white);
  padding: 40px var(--spacing-lg);
  text-align: center;
}

.landing-footer p {
  color: #6a7c99;
  font-size: 12px;
  margin-bottom: var(--spacing-md);
}

.footer-nav {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.footer-nav a {
  color: #a0b4d9;
  font-size: 12px;
  font-weight: 500;
  transition: var(--transition);
}

.footer-nav a:hover {
  color: var(--bg-white);
}

/* =========================================================
   Responsive Design
   ========================================================= */

@media (max-width: 768px) {
  .logo-section {
    padding: 0 var(--spacing-md);
  }

  .site-title {
    font-size: 18px;
  }

  .header-nav {
    gap: var(--spacing-sm);
  }

  .header-nav a {
    font-size: 13px;
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .header-nav a[href*="forms"] {
    padding: 8px 16px;
  }

  .hero-section {
    padding: 60px var(--spacing-md) 50px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-description {
    font-size: 15px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-md);
  }

  .btn {
    width: 100%;
  }

  .features-section {
    padding: 60px var(--spacing-md);
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .section-title {
    font-size: 22px;
  }

  .about-section {
    padding: 50px var(--spacing-md) 80px;
  }

  .about-content {
    padding: 40px 24px;
  }

  .landing-footer {
    padding: 30px var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .site-title {
    font-size: 16px;
  }

  .header-nav {
    gap: var(--spacing-xs);
  }

  .header-nav a {
    font-size: 12px;
  }

  .hero-title {
    font-size: 24px;
    letter-spacing: 0.02em;
  }

  .hero-description {
    font-size: 14px;
  }

  .feature-card {
    padding: var(--spacing-lg);
  }

  .feature-title {
    font-size: 16px;
  }

  .feature-description {
    font-size: 13px;
  }

  .about-content {
    padding: 30px 20px;
  }

  .about-content p {
    font-size: 14px;
  }
}