/* ============================================
   リセット＆基本設定
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* カラーパレット - クール系 */
    --primary-color: #0066cc;
    --primary-dark: #004c99;
    --primary-light: #3385d6;
    --secondary-color: #1a2332;
    --secondary-light: #2d3e50;
    --accent-color: #00d4ff;
    --text-primary: #1a2332;
    --text-secondary: #5a6c7d;
    --text-light: #8899aa;
    --bg-primary: #ffffff;
    --bg-secondary: #f5f8fa;
    --bg-dark: #1a2332;
    --border-color: #e1e8ed;
    --success-color: #00c48c;
    --warning-color: #ff9500;
    
    /* タイポグラフィ */
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* シャドウ */
    --shadow-sm: 0 2px 8px rgba(26, 35, 50, 0.08);
    --shadow-md: 0 4px 16px rgba(26, 35, 50, 0.12);
    --shadow-lg: 0 8px 32px rgba(26, 35, 50, 0.16);
    --shadow-xl: 0 16px 48px rgba(26, 35, 50, 0.24);
    
    /* ボーダー半径 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* トランジション */
    --transition-base: 0.3s ease;
    --transition-fast: 0.15s ease;
}

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

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   コンテナ
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   ヘッダー
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: var(--transition-base);
}

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

.logo {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.02em;
}

.nav {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-base);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--bg-secondary);
}

.nav-link.cta-button {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
}

.nav-link.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   ヒーローセクション
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: 
        linear-gradient(135deg, rgba(0, 102, 204, 0.92) 0%, rgba(0, 76, 153, 0.93) 50%, rgba(26, 35, 50, 0.95) 100%),
        url('../images/hero-bg.jpg') center/cover no-repeat;
    color: white;
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 102, 204, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero-subtitle {
    font-family: var(--font-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-color);
    margin-bottom: var(--spacing-sm);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.hero-description {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-badge {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.badge-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.95);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ============================================
   ボタン
   ============================================ */
.button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
}

.button-primary {
    background: white;
    color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.button-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    background: var(--bg-secondary);
}

.button-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.button-secondary:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-3px);
}

.button-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

/* ============================================
   セクション共通
   ============================================ */
section {
    padding: var(--spacing-xxl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-subtitle {
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1.3;
    letter-spacing: -0.02em;
}

/* ============================================
   課題提起セクション
   ============================================ */
.problem {
    background: var(--bg-secondary);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.problem-item {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.problem-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.problem-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.problem-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.problem-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

.problem-solution {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.solution-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    position: relative;
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
}

.solution-text::before,
.solution-text::after {
    content: '→';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-color);
    font-size: 2rem;
    animation: arrowBounce 1.5s ease-in-out infinite;
}

.solution-text::before {
    left: -3rem;
}

.solution-text::after {
    right: -3rem;
}

@keyframes arrowBounce {
    0%, 100% { transform: translateY(-50%) translateX(0); }
    50% { transform: translateY(-50%) translateX(5px); }
}

/* ============================================
   特徴セクション
   ============================================ */
.features {
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    position: relative;
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-color);
    transition: var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-card-highlight {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border-color: var(--primary-color);
}

.feature-card-highlight .feature-number,
.feature-card-highlight .feature-title,
.feature-card-highlight .feature-description,
.feature-card-highlight .feature-list {
    color: white;
}

.feature-badge {
    position: absolute;
    top: -12px;
    right: var(--spacing-md);
    background: var(--accent-color);
    color: var(--text-primary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.feature-number {
    font-family: var(--font-secondary);
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary-color);
    opacity: 0.15;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.feature-list {
    list-style: none;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-md);
}

.feature-card-highlight .feature-list {
    background: rgba(255, 255, 255, 0.15);
}

.feature-list li {
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: 1.5rem;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

.feature-card-highlight .feature-list li::before {
    color: var(--accent-color);
}

/* ============================================
   制作フローセクション
   ============================================ */
.flow {
    background: var(--bg-secondary);
}

.flow-timeline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    max-width: 1000px;
    margin: 0 auto;
}

.flow-item {
    flex: 1;
    min-width: 250px;
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.flow-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.flow-step {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    font-family: var(--font-secondary);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.flow-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.flow-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

.flow-arrow {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 700;
}

/* ============================================
   料金セクション
   ============================================ */
.pricing {
    background: white;
}

.pricing-card {
    max-width: 700px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, white 100%);
    border: 3px solid var(--primary-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.pricing-header {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-lg);
    text-align: center;
}

.pricing-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.pricing-subtitle {
    font-size: 1rem;
    opacity: 0.9;
}

.pricing-price {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background: white;
}

.price-currency {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-secondary);
    vertical-align: top;
}

.price-amount {
    font-size: 4.5rem;
    font-weight: 900;
    color: var(--primary-color);
    line-height: 1;
    font-family: var(--font-secondary);
}

.price-tax {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-left: var(--spacing-xs);
}

.pricing-includes {
    padding: var(--spacing-xl);
}

.includes-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.includes-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
}

.includes-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: white;
    border-radius: var(--radius-md);
    font-weight: 500;
}

.check-icon {
    color: var(--success-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.pricing-notes {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    margin: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--warning-color);
}

.notes-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.notes-text:last-child {
    margin-bottom: 0;
}

/* ============================================
   よくある質問セクション
   ============================================ */
.faq {
    background: var(--bg-secondary);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.faq-question {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.faq-answer {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ============================================
   CTAセクション
   ============================================ */
.cta {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-color) 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.cta-description {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.cta-buttons {
    margin-bottom: var(--spacing-md);
}

.cta-note {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ============================================
   フッター
   ============================================ */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-brand {
    flex: 1;
    min-width: 250px;
}

.footer-logo {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition-base);
    padding: var(--spacing-xs);
}

.footer-link:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ============================================
   レスポンシブデザイン
   ============================================ */
@media (max-width: 768px) {
    .nav {
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        font-size: 0.85rem;
        padding: var(--spacing-xs);
    }
    
    .hero {
        min-height: 90vh;
        padding-top: 100px;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .button {
        width: 100%;
        text-align: center;
    }
    
    .problem-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .flow-timeline {
        flex-direction: column;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
    }
    
    .includes-list {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .solution-text::before,
    .solution-text::after {
        display: none;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xxl: 3rem;
    }
    
    .hero-badge {
        flex-direction: column;
        align-items: stretch;
    }
    
    .badge-text {
        text-align: center;
    }
}

/* ============================================
   アクセシビリティ
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* フォーカス表示 */
a:focus,
button:focus {
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
}