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

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --cruise-primary: #0066cc;
    --cruise-primary-light: #3399ff;
    --cruise-primary-dark: #004499;
    --cruise-secondary: #00a8cc;
    --cruise-accent: #ff6b35;
    --cruise-success: #28a745;
    --cruise-warning: #ffc107;
    --cruise-danger: #dc3545;
    
    /* Neutrals */
    --cruise-white: #ffffff;
    --cruise-gray-50: #f8f9fa;
    --cruise-gray-100: #f1f3f4;
    --cruise-gray-200: #e9ecef;
    --cruise-gray-300: #dee2e6;
    --cruise-gray-400: #ced4da;
    --cruise-gray-500: #adb5bd;
    --cruise-gray-600: #6c757d;
    --cruise-gray-700: #495057;
    --cruise-gray-800: #343a40;
    --cruise-gray-900: #212529;
    
    /* Spacing */
    --cruise-space-xs: 0.25rem;
    --cruise-space-sm: 0.5rem;
    --cruise-space-md: 1rem;
    --cruise-space-lg: 1.5rem;
    --cruise-space-xl: 2rem;
    --cruise-space-2xl: 3rem;
    --cruise-space-3xl: 4rem;
    
    /* Typography */
    --cruise-font-size-xs: 0.75rem;
    --cruise-font-size-sm: 0.875rem;
    --cruise-font-size-base: 1rem;
    --cruise-font-size-lg: 1.125rem;
    --cruise-font-size-xl: 1.25rem;
    --cruise-font-size-2xl: 1.5rem;
    --cruise-font-size-3xl: 1.875rem;
    --cruise-font-size-4xl: 2.25rem;
    --cruise-font-size-5xl: 3rem;
    
    /* Shadows */
    --cruise-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --cruise-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --cruise-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --cruise-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Borders */
    --cruise-border-radius-sm: 0.25rem;
    --cruise-border-radius-md: 0.5rem;
    --cruise-border-radius-lg: 0.75rem;
    --cruise-border-radius-xl: 1rem;
    --cruise-border-radius-full: 9999px;
    
    /* Breakpoints */
    --cruise-breakpoint-sm: 640px;
    --cruise-breakpoint-md: 768px;
    --cruise-breakpoint-lg: 1024px;
    --cruise-breakpoint-xl: 1280px;
    --cruise-breakpoint-2xl: 1536px;
    
    /* Z-index */
    --cruise-z-dropdown: 1000;
    --cruise-z-sticky: 1020;
    --cruise-z-fixed: 1030;
    --cruise-z-modal-backdrop: 1040;
    --cruise-z-modal: 1050;
    --cruise-z-popover: 1060;
    --cruise-z-tooltip: 1070;
}

/* ===== Utility Classes ===== */
.cruise-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--cruise-space-md);
}

.cruise-container--wide {
    max-width: 1400px;
}

.cruise-container--narrow {
    max-width: 800px;
}

.cruise-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Text utilities */
.cruise-text-center { text-align: center; }
.cruise-text-left { text-align: left; }
.cruise-text-right { text-align: right; }

.cruise-text-primary { color: var(--cruise-primary); }
.cruise-text-secondary { color: var(--cruise-secondary); }
.cruise-text-accent { color: var(--cruise-accent); }
.cruise-text-muted { color: var(--cruise-gray-600); }

/* Background utilities */
.cruise-bg-primary { background-color: var(--cruise-primary); }
.cruise-bg-secondary { background-color: var(--cruise-secondary); }
.cruise-bg-accent { background-color: var(--cruise-accent); }
.cruise-bg-light { background-color: var(--cruise-gray-50); }
.cruise-bg-white { background-color: var(--cruise-white); }

/* Spacing utilities */
.cruise-mt-0 { margin-top: 0; }
.cruise-mt-1 { margin-top: var(--cruise-space-sm); }
.cruise-mt-2 { margin-top: var(--cruise-space-md); }
.cruise-mt-3 { margin-top: var(--cruise-space-lg); }
.cruise-mt-4 { margin-top: var(--cruise-space-xl); }
.cruise-mt-5 { margin-top: var(--cruise-space-2xl); }

.cruise-mb-0 { margin-bottom: 0; }
.cruise-mb-1 { margin-bottom: var(--cruise-space-sm); }
.cruise-mb-2 { margin-bottom: var(--cruise-space-md); }
.cruise-mb-3 { margin-bottom: var(--cruise-space-lg); }
.cruise-mb-4 { margin-bottom: var(--cruise-space-xl); }
.cruise-mb-5 { margin-bottom: var(--cruise-space-2xl); }

.cruise-py-1 { padding-top: var(--cruise-space-sm); padding-bottom: var(--cruise-space-sm); }
.cruise-py-2 { padding-top: var(--cruise-space-md); padding-bottom: var(--cruise-space-md); }
.cruise-py-3 { padding-top: var(--cruise-space-lg); padding-bottom: var(--cruise-space-lg); }
.cruise-py-4 { padding-top: var(--cruise-space-xl); padding-bottom: var(--cruise-space-xl); }
.cruise-py-5 { padding-top: var(--cruise-space-2xl); padding-bottom: var(--cruise-space-2xl); }

/* Display utilities */
.cruise-hidden { display: none; }
.cruise-block { display: block; }
.cruise-inline-block { display: inline-block; }
.cruise-flex { display: flex; }
.cruise-grid { display: grid; }

/* Flex utilities */
.cruise-flex-col { flex-direction: column; }
.cruise-flex-row { flex-direction: row; }
.cruise-items-center { align-items: center; }
.cruise-items-start { align-items: flex-start; }
.cruise-items-end { align-items: flex-end; }
.cruise-justify-center { justify-content: center; }
.cruise-justify-between { justify-content: space-between; }
.cruise-justify-start { justify-content: flex-start; }
.cruise-justify-end { justify-content: flex-end; }

/* Responsive utilities */
@media (max-width: 767px) {
    .cruise-hidden-mobile { display: none !important; }
}

@media (min-width: 768px) {
    .cruise-hidden-desktop { display: none !important; }
}

/* ===== 共通コンポーネント ===== */

/* セクション共通スタイル */
.cruise-section {
    padding: var(--cruise-space-3xl) 0;
}

.cruise-section--gray {
    background-color: var(--cruise-gray-50);
}

.cruise-section--primary {
    background: linear-gradient(135deg, var(--cruise-primary), var(--cruise-primary-dark));
    color: var(--cruise-white);
}

.cruise-section--hero {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.05), rgba(0, 168, 204, 0.1));
    border-bottom: 1px solid var(--cruise-gray-200);
}

.cruise-section__header {
    text-align: center;
    margin-bottom: var(--cruise-space-2xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cruise-section__title {
    font-size: var(--cruise-font-size-4xl);
    font-weight: 700;
    color: var(--cruise-gray-900);
    margin-bottom: var(--cruise-space-md);
    line-height: 1.2;
}

.cruise-section--primary .cruise-section__title {
    color: var(--cruise-white);
}

.cruise-section__subtitle {
    font-size: var(--cruise-font-size-lg);
    color: var(--cruise-gray-600);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

.cruise-section--primary .cruise-section__subtitle {
    color: rgba(255, 255, 255, 0.9);
}

/* グリッドシステム */
.cruise-grid {
    display: grid;
    gap: var(--cruise-space-xl);
}

.cruise-grid--2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.cruise-grid--3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.cruise-grid--4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* カード共通スタイル */
.cruise-card {
    background: var(--cruise-white);
    border-radius: var(--cruise-border-radius-xl);
    box-shadow: var(--cruise-shadow-md);
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.cruise-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--cruise-shadow-xl);
}

.cruise-card__content {
    padding: var(--cruise-space-xl);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.cruise-card__title {
    font-size: var(--cruise-font-size-xl);
    font-weight: 600;
    color: var(--cruise-gray-900);
    margin-bottom: var(--cruise-space-md);
    line-height: 1.3;
}

.cruise-card__description {
    color: var(--cruise-gray-600);
    line-height: 1.6;
    margin-bottom: var(--cruise-space-lg);
    flex-grow: 1;
}

.cruise-card__footer {
    margin-top: auto;
    padding-top: var(--cruise-space-lg);
}

/* 特徴カード */
.cruise-feature-card {
    text-align: center;
    padding: var(--cruise-space-2xl);
    background: var(--cruise-white);
    border-radius: var(--cruise-border-radius-xl);
    box-shadow: var(--cruise-shadow-sm);
    border: 1px solid var(--cruise-gray-200);
    transition: all 0.3s ease;
    height: 100%;
}

.cruise-feature-card__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--cruise-space-lg);
    background: linear-gradient(135deg, var(--cruise-gray-800), var(--cruise-gray-700));
    border-radius: var(--cruise-border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cruise-white);
    font-size: var(--cruise-font-size-2xl);
    position: relative;
    overflow: hidden;
}

.cruise-feature-card__icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s;
}

.cruise-feature-card:hover .cruise-feature-card__icon::before {
    left: 100%;
}

.cruise-feature-card__title {
    font-size: var(--cruise-font-size-xl);
    font-weight: 600;
    color: var(--cruise-gray-900);
    margin-bottom: var(--cruise-space-md);
    line-height: 1.3;
}

.cruise-feature-card__description {
    color: var(--cruise-gray-600);
    line-height: 1.6;
}

/* レスポンシブ対応 */
@media (max-width: 1024px) {
    .cruise-section {
        padding: var(--cruise-space-2xl) 0;
    }
    
    .cruise-section__title {
        font-size: var(--cruise-font-size-3xl);
    }
}

@media (max-width: 767px) {
    .cruise-grid--2,
    .cruise-grid--3,
    .cruise-grid--4 {
        grid-template-columns: 1fr;
    }
    
    .cruise-section {
        padding: var(--cruise-space-xl) 0;
    }
    
    .cruise-section__title {
        font-size: var(--cruise-font-size-2xl);
    }
    
    .cruise-section__subtitle {
        font-size: var(--cruise-font-size-base);
    }
    
    .cruise-card__content,
    .cruise-feature-card {
        padding: var(--cruise-space-lg);
    }
}