/* @import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Montserrat:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap'); */

/* CSS Variables - Design System */
:root {
  /* Primary: ネイビー（革製品の高級感） */
  --color-primary: #1B2A4A;
  --color-primary-light: #2C3E6B;
  --color-primary-dark: #0F1A2E;

  /* Secondary: ホワイト（医療の清潔感） */
  --color-secondary: #FFFFFF;
  --color-secondary-light: #F8F9FA;
  --color-secondary-dark: #E9ECEF;

  /* Accent: ゴールド（信頼・品質） */
  --color-accent: #C5A355;
  --color-accent-light: #D4B76A;
  --color-accent-dark: #A68B3E;

  /* Text */
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #4A4A4A;
  --color-text-light: #FFFFFF;

  /* Fonts */
  --font-primary: 'Noto Sans JP', 'Inter', sans-serif;
  --font-heading: 'Montserrat', 'Noto Sans JP', sans-serif;

  /* Spacing */
  --section-padding: 80px 0;
  --container-max-width: 1200px;

  /* Shadows */
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-heavy: 0 8px 32px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Border Radius */
  --radius-small: 4px;
  --radius-medium: 8px;
  --radius-large: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-secondary);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
}

h2 {
  font-size: 2rem;
  font-weight: 600;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
}

h4 {
  font-size: 1.25rem;
  font-weight: 500;
}

p {
  margin-bottom: 1rem;
  color: var(--color-text-secondary);
}

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

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

/* Container */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-medium);
  font-family: var(--font-heading);
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-fast);
  background-color: var(--color-primary);
  color: var(--color-text-light);
}

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

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-text-light);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-text-light);
}

.btn-accent:hover {
  background-color: var(--color-accent-dark);
}

/* Sections */
.section {
  padding: var(--section-padding);
}

.section-alt {
  background-color: var(--color-secondary-light);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.p-5 { padding: 3rem; }

.d-none {
  display: none !important;
}

.d-block {
  display: block !important;
}

.d-flex {
  display: flex !important;
}

.justify-center {
  justify-content: center;
}

.align-center {
  align-items: center;
}

.flex-column {
  flex-direction: column;
}

.w-100 {
  width: 100%;
}

.h-100 {
  height: 100%;
}