/**
 * メインスタイルシート
 * リセット、ベーススタイル、コンポーネント、レイアウト
 */

/* ==================== CSS変数のインポート ==================== */
@import url('variables.css');

/* ==================== リセット & ベース ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--gray-900);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    color: var(--gray-900);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
    margin-bottom: var(--spacing-4);
    line-height: var(--leading-relaxed);
}

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

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

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

/* ==================== ユーティリティクラス ==================== */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-6);
    padding-right: var(--spacing-6);
}

.section {
    padding-top: var(--spacing-20);
    padding-bottom: var(--spacing-20);
}

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

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

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

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4) var(--spacing-6);
}

.logo {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--gray-900);
    text-decoration: none;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-6);
}

.nav-link {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--gray-700);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background-color: var(--primary-lightest);
}

.language-switcher {
    display: flex;
    gap: var(--spacing-2);
}

.lang-btn {
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    background: var(--white);
    color: var(--gray-700);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.lang-btn:hover,
.lang-btn.active {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: var(--primary-lightest);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--gray-700);
    margin: 5px 0;
    transition: var(--transition-base);
    border-radius: var(--border-radius-full);
}

/* ==================== ボタン ==================== */
.btn {
    display: inline-block;
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    border-radius: var(--border-radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
    text-decoration: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.btn-secondary:hover {
    background: var(--primary-lightest);
    transform: translateY(-2px);
}

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

.btn-dark:hover {
    background: var(--dark-bg-light);
    transform: translateY(-2px);
}

/* ==================== カード ==================== */
.card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: var(--spacing-4);
    color: var(--primary-color);
}

.card-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-3);
    color: var(--gray-900);
}

.card-description {
    color: var(--gray-600);
    line-height: var(--leading-relaxed);
}

/* ==================== ヒーローセクション ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.8) 0%, 
        rgba(118, 75, 162, 0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    color: var(--white);
    max-width: 800px;
}

.hero-subtitle {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-4);
    opacity: 0.9;
}

.hero-title {
    font-size: clamp(var(--text-3xl), 5vw, var(--text-6xl));
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-6);
    line-height: var(--leading-tight);
}

.hero-description {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-8);
    opacity: 0.95;
    line-height: var(--leading-relaxed);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
    flex-wrap: wrap;
}

/* ==================== グリッドレイアウト ==================== */
.grid {
    display: grid;
    gap: var(--spacing-8);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ==================== セクション背景 ==================== */
.bg-gray {
    background-color: var(--gray-50);
}

.bg-dark {
    background-color: var(--dark-bg);
    color: var(--white);
}

.bg-dark h1, .bg-dark h2, .bg-dark h3,
.bg-dark h4, .bg-dark h5, .bg-dark h6 {
    color: var(--white);
}

.bg-dark p {
    color: var(--gray-300);
}

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

/* ==================== フッター ==================== */
.footer {
    background-color: var(--dark-bg);
    color: var(--gray-300);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-12);
    margin-bottom: var(--spacing-12);
}

.footer-section h4 {
    color: var(--white);
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-4);
}

.footer-link {
    color: var(--gray-400);
    display: block;
    padding: var(--spacing-2) 0;
    transition: color var(--transition-base);
}

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

.footer-bottom {
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--dark-bg-light);
    text-align: center;
    color: var(--gray-500);
}

/* ==================== CTAセクション ==================== */
.cta-section {
    background: var(--primary-gradient);
    color: var(--white);
    padding: var(--spacing-20) 0;
    text-align: center;
}

.cta-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--spacing-4);
    color: var(--white);
}

.cta-description {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-8);
    opacity: 0.95;
}

/* ==================== フォーム ==================== */
.form-group {
    margin-bottom: var(--spacing-6);
}

.form-label {
    display: block;
    font-weight: var(--font-medium);
    margin-bottom: var(--spacing-2);
    color: var(--gray-700);
}

.form-label.required::after {
    content: " *";
    color: var(--danger-color);
}

.form-control {
    width: 100%;
    padding: var(--spacing-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-lg);
    font-size: var(--text-base);
    transition: all var(--transition-base);
    background-color: var(--white);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.form-control.error {
    border-color: var(--danger-color);
}

.form-error {
    color: var(--danger-color);
    font-size: var(--text-sm);
    margin-top: var(--spacing-1);
}

.form-success {
    background-color: var(--success-color);
    color: var(--white);
    padding: var(--spacing-4);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-4);
}

/* ==================== レスポンシブ ==================== */
@media (max-width: 1024px) {
    .grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-list {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-8);
        transition: left var(--transition-base);
        box-shadow: var(--shadow-xl);
    }
    
    .nav-list.active {
        left: 0;
    }
    
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: var(--text-3xl);
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
}

@media (max-width: 640px) {
    .container {
        padding-left: var(--spacing-4);
        padding-right: var(--spacing-4);
    }
    
    .section {
        padding-top: var(--spacing-12);
        padding-bottom: var(--spacing-12);
    }
}

/* ==================== アニメーション ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp var(--transition-slow) ease-out;
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-slideInRight {
    animation: slideInRight var(--transition-slow) ease-out;
}

/* ==================== モダンデザインスタイル ==================== */

/* モダンヘッダー */
.modern-header {
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 0;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    text-decoration: none;
}

.nav-modern {
    display: flex;
    align-items: center;
}

.nav-link-modern {
    padding: 0.5rem 1rem;
    color: var(--gray-600);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    border-radius: 0.5rem;
}

.nav-link-modern:hover {
    color: var(--primary-color);
    background: rgba(102, 126, 234, 0.08);
}

.nav-link-modern.active {
    color: var(--primary-color);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.language-switcher-modern {
    display: flex;
    gap: 0.25rem;
}

.lang-btn-modern {
    padding: 0.375rem 0.75rem;
    color: var(--gray-600);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
}

.lang-btn-modern:hover {
    background: var(--gray-50);
}

.lang-btn-modern.active {
    color: var(--primary-color);
    background: rgba(102, 126, 234, 0.08);
    border-color: var(--primary-color);
}

.btn-modern {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 2rem;
    transition: all 0.2s;
}

.btn-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(102, 126, 234, 0.25);
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(102, 126, 234, 0.35);
}

.btn-arrow {
    width: 18px;
    height: 18px;
    transition: transform 0.2s;
}

.btn-modern:hover .btn-arrow {
    transform: translateX(2px);
}

/* モダンヒーローセクション */
.hero-modern {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 6rem 0;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.1) 0%, 
        rgba(118, 75, 162, 0.1) 100%);
}

.hero-pattern {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(118, 75, 162, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(159, 122, 234, 0.1) 0%, transparent 50%);
}

.hero-content-modern {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.hero-title-modern {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: 2rem;
}

.text-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description-modern {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 3rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-hero {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 2rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(102, 126, 234, 0.35);
}

.btn-primary-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(102, 126, 234, 0.45);
}

.btn-secondary-hero {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary-hero:hover {
    background: rgba(102, 126, 234, 0.08);
    transform: translateY(-2px);
}

/* モダンサービスセクション */
.services-modern {
    padding: 5rem 0;
    background: var(--gray-50);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-label {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.service-icon-wrapper {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon {
    width: 30px;
    height: 30px;
    color: var(--primary-color);
}

.service-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.service-description {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--gray-600);
}

/* サービスカードの番号表示 */
.service-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

/* 開発領域セクション */
.development-areas {
    background: var(--gray-50);
}

.areas-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.area-card {
    background: white;
    padding: 1.5rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.area-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.area-icon {
    width: 40px;
    height: 40px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.area-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
    margin-bottom: 0.25rem;
}

.area-description {
    font-size: 0.75rem;
    line-height: 1.4;
    color: var(--gray-600);
    margin: 0;
}

/* Our Worksセクション */
.our-works {
    padding: 5rem 0;
}

.works-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 3rem;
}

.btn-all-projects {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 2rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-all-projects:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
}

.works-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.work-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.work-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.work-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
}

.work-placeholder-icon {
    width: 60px;
    height: 60px;
}

.work-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 1.5rem 1.5rem 0.5rem;
}

.work-description {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--gray-600);
    padding: 0 1.5rem 1.5rem;
}

/* ==================== Workページスタイル ==================== */
.page-hero {
    padding: 5rem 0 3rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
}

.page-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--gray-900);
    text-align: center;
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    text-align: center;
}

.works-list {
    padding: 3rem 0 5rem;
}

.works-grid-full {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 2rem;
}

.project-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    text-decoration: none;
    display: block;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.project-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-content {
    padding: 1.5rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.project-description {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--gray-600);
    margin-bottom: 1rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-item {
    padding: 0.25rem 0.5rem;
    background: var(--gray-50);
    color: var(--gray-700);
    border-radius: 0.25rem;
    font-size: 0.75rem;
}

/* ==================== プロジェクト詳細ページ ==================== */
.project-hero {
    padding: 5rem 0 3rem;
    background: var(--gray-50);
}

.project-hero-content {
    text-align: center;
}

.project-detail-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.breadcrumb {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
    transition: opacity 0.2s;
}

.breadcrumb a:hover {
    opacity: 0.8;
}

.project-visual {
    padding: 0 0 3rem;
    background: var(--gray-50);
}

.project-main-image {
    max-width: 1200px;
    margin: 0 auto;
}

.project-summary {
    padding: 5rem 0;
}

.summary-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 3rem;
}

.summary-lead {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--gray-700);
    margin-bottom: 3rem;
    font-weight: 500;
}

.summary-points {
    display: grid;
    gap: 2rem;
}

.point-item {
    display: flex;
    gap: 1.5rem;
    align-items: start;
}

.point-icon {
    width: 40px;
    height: 40px;
    color: var(--primary-color);
    flex-shrink: 0;
    padding: 0.5rem;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 0.5rem;
}

.point-item h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.point-item p {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--gray-600);
    margin: 0;
}

.tech-stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.tech-stack-item {
    background: white;
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.tech-stack-item h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.tech-stack-item ul {
    list-style: none;
    padding: 0;
}

.tech-stack-item li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--gray-600);
}

.tech-stack-item li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.project-detail-content {
    max-width: 900px;
}

.project-detail-content h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 2rem;
}

.project-detail-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.project-detail-content p {
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--gray-600);
    border-bottom: 1px solid var(--gray-100);
}

.feature-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.project-cta {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    padding: 3rem;
    border-radius: 1rem;
    margin-top: 3rem;
    text-align: center;
}

.project-cta h3 {
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.project-cta p {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.related-projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.related-project-card {
    background: white;
    border-radius: 0.75rem;
    overflow: hidden;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.related-project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.related-project-image {
    width: 100%;
    height: 150px;
}

.related-project-card h4 {
    padding: 1rem 1.5rem 0.5rem;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
}

.related-project-card p {
    padding: 0 1.5rem 1.5rem;
    font-size: 0.875rem;
    color: var(--gray-600);
    margin: 0;
}

/* レスポンシブ調整 */
@media (max-width: 768px) {
    .nav-modern {
        display: none;
    }
    
    .header-actions {
        gap: 1rem;
    }
    
    .hero-title-modern {
        font-size: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-hero {
        width: 100%;
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .areas-grid {
        grid-template-columns: 1fr;
    }
    
    .works-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
    
    .works-grid {
        grid-template-columns: 1fr;
    }
}