/* ==================== 
   リセット & 基本設定
   ==================== */

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

:root {
    /* カラーパレット */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #ec4899;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* タイポグラフィ */
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-secondary: 'Montserrat', sans-serif;
    
    /* スペーシング */
    --section-padding: 100px 0;
    --container-padding: 0 20px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.7;
    background: var(--bg-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* ==================== 
   ナビゲーション
   ==================== */

.navbar {
    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;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: 1px;
    transition: var(--transition);
}

.logo:hover {
    color: var(--primary-dark);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
    align-items: center;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: var(--transition);
    border-radius: 3px;
}

/* ==================== 
   ヒーローセクション
   ==================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    padding: 120px 20px 80px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: pulse 15s ease-in-out infinite;
}

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

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-subtitle {
    display: inline-block;
    color: rgba(255, 255, 255, 0.9);
    font-family: var(--font-secondary);
    font-size: 1.1rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    color: #ffffff;
    line-height: 1.2;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.2s both;
}

.highlight {
    background: linear-gradient(to right, #f093fb, #f5576c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 40px;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.6s both;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    letter-spacing: 2px;
    animation: fadeInUp 1s ease 0.8s both;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: rgba(255, 255, 255, 0.5);
    animation: scrollAnimation 2s ease-in-out infinite;
}

@keyframes scrollAnimation {
    0%, 100% {
        transform: translateY(0);
        opacity: 1;
    }
    50% {
        transform: translateY(20px);
        opacity: 0.3;
    }
}

/* ==================== 
   ボタン
   ==================== */

.btn {
    display: inline-block;
    padding: 15px 40px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    font-family: var(--font-primary);
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-full {
    width: 100%;
}

/* ==================== 
   セクション共通
   ==================== */

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-subtitle {
    display: inline-block;
    color: var(--primary-color);
    font-family: var(--font-secondary);
    font-size: 0.95rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 15px;
    font-weight: 600;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ==================== 
   サービスセクション
   ==================== */

.services {
    padding: var(--section-padding);
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: rotate(5deg) scale(1.1);
}

.service-icon i {
    font-size: 2rem;
    color: var(--bg-white);
}

.service-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.service-description {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

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

.service-list li {
    padding: 8px 0;
    color: var(--text-light);
    position: relative;
    padding-left: 25px;
}

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

/* ==================== 
   ポートフォリオセクション
   ==================== */

.portfolio {
    padding: var(--section-padding);
    background: var(--bg-white);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.portfolio-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
}

.portfolio-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.portfolio-placeholder i {
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.5);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(99, 102, 241, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-placeholder {
    transform: scale(1.1);
}

.portfolio-title {
    color: var(--bg-white);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-align: center;
}

.portfolio-category {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    margin-bottom: 20px;
    text-align: center;
}

.portfolio-link {
    color: var(--bg-white);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.portfolio-link:hover {
    gap: 15px;
}

/* ==================== 
   プロフィールセクション
   ==================== */

.about {
    padding: var(--section-padding);
    background: var(--bg-light);
}

.about-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-photo {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
}

.about-photo i {
    font-size: 8rem;
    color: rgba(255, 255, 255, 0.5);
}

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

.about-content .section-subtitle,
.about-content .section-title {
    text-align: left;
}

.about-text {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.9;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin: 40px 0;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-color);
    font-family: var(--font-secondary);
}

.stat-label {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-top: 5px;
}

.about-skills {
    margin-top: 40px;
}

.skills-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-tag {
    display: inline-block;
    padding: 10px 20px;
    background: var(--bg-white);
    color: var(--text-dark);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.skill-tag:hover {
    background: var(--primary-color);
    color: var(--bg-white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ==================== 
   お問い合わせセクション
   ==================== */

.contact {
    padding: var(--section-padding);
    background: var(--bg-white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    margin-top: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.5rem;
    color: var(--bg-white);
}

.contact-details h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.contact-details a,
.contact-details p {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

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

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-link {
    width: 50px;
    height: 50px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--bg-white);
    transform: translateY(-5px);
}

.social-link i {
    font-size: 1.2rem;
}

.contact-form {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 20px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.required {
    color: var(--secondary-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* ==================== 
   フッター
   ==================== */

.footer {
    background: var(--text-dark);
    padding: 30px 0;
    text-align: center;
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

/* ==================== 
   レスポンシブデザイン
   ==================== */

@media (max-width: 968px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .about-wrapper {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .about-content .section-subtitle,
    .about-content .section-title {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--bg-white);
        width: 100%;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        transition: left 0.3s ease;
        gap: 20px;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .services-grid,
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .contact-form {
        padding: 25px;
    }
    
    .about-photo i {
        font-size: 5rem;
    }
}