/*================================================
 * 1. 基本設定 & 変数
 *================================================*/
:root {
    --primary-color: #4A90E2; /* 明るい青 */
    --secondary-color: #50E3C2; /* ティールグリーン */
    --background-color: #0a0a0a; /* さらに深い黒 */
    --surface-color: rgba(30, 30, 30, 0.7); /* 半透明のサーフェス */
    --surface-color-solid: #1E1E1E;
    --text-color: #EAEAEA;
    --text-color-secondary: #B0B0B0;
    --border-color: rgba(255, 255, 255, 0.1);
    --font-primary: 'Poppins', 'Noto Sans JP', sans-serif;
    --font-secondary: 'Noto Sans JP', sans-serif;
    --shadow-light: 0 4px 15px rgba(0, 0, 0, 0.2);
    --shadow-strong: 0 8px 30px rgba(0, 0, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

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

.main-container {
    background: linear-gradient(180deg, var(--background-color) 0%, #1a1a1a 100%);
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

/*================================================
 * 2. タイポグラフィ & 共通コンポーネント
 *================================================*/
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    color: var(--text-color);
}

@keyframes title-shine {
    from { background-position: 200% center; }
    to { background-position: -200% center; }
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 1rem;
    font-weight: 700;
    color: transparent;
    background: linear-gradient(90deg, var(--text-color), var(--primary-color), var(--secondary-color), var(--text-color));
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
}

.section-title.visible {
    animation: title-shine 2s ease-out forwards;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-color-secondary);
    margin-bottom: 4rem;
}

.cta-button {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-light);
    text-align: center;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    background-size: 200% auto;
    color: white;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background-position: right center;
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

.cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

.cta-button i {
    margin-left: 8px;
    transition: transform 0.3s ease;
}

.cta-button:hover i {
    transform: translateX(5px);
}

section {
    padding: 100px 0;
    overflow: hidden;
}

/*================================================
 * 3. ナビゲーションバー
 *================================================*/
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    transition: background-color 0.4s ease, padding 0.4s ease, box-shadow 0.4s ease;
}

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

.nav-logo {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
}

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

.nav-item {
    margin: 0 15px;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

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

.cta-button-nav {
    padding: 10px 22px;
    border: 2px solid var(--primary-color);
    border-radius: 50px;
    background-color: transparent;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.cta-button-nav:hover {
    background-color: var(--primary-color);
    color: white;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
    background-color: white;
}

.navbar.scrolled {
    background-color: rgba(18, 18, 18, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

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

.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

#hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(
            circle 400px at var(--mouse-x, 50%) var(--mouse-y, 50%), 
            rgba(74, 144, 226, 0.15), 
            transparent 80%
        ),
        radial-gradient(ellipse at center, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0.8) 100%);
    z-index: -1;
    transition: background 0.2s ease-out;
}

.hero-content {
    max-width: 850px;
    padding: 0 20px;
    transform: translateY(-50px);
    opacity: 0;
    animation: hero-fade-in 1.5s 0.5s ease-out forwards;
}

@keyframes hero-fade-in {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.hero-title {
    font-family: var(--font-primary);
    font-size: 3.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #FFFFFF;
    line-height: 1.2;
}

#typing-text {
    color: transparent;
    background: linear-gradient(45deg, #ffffff, var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
}

#typing-text::after {
    content: '|';
    color: var(--secondary-color);
    animation: blink 0.7s infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-color-secondary);
}

/*================================================
 * 5. サービスセクション
 *================================================*/
.service-section {
    position: relative;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 35px;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-strong);
    border-color: var(--primary-color);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.service-card h3 {
    margin-top: 0;
    font-size: 1.5rem;
    color: var(--text-color);
}
.service-card h4 {
    font-family: var(--font-secondary);
    font-size: 1.1rem;
    color: var(--text-color-secondary);
    font-weight: bold;
    margin-bottom: 15px;
}

.service-card p {
    flex-grow: 1;
    color: var(--text-color-secondary);
}

.service-button {
    background-color: transparent;
    color: var(--secondary-color);
    padding: 10px 20px;
    margin-top: 20px;
    border: 2px solid var(--secondary-color);
    border-radius: 50px;
    text-decoration: none;
    text-align: center;
    font-weight: bold;
    transition: all 0.3s ease;
}

.service-button:hover {
    background-color: var(--secondary-color);
    color: var(--background-color);
    transform: translateY(-2px);
}

/*================================================
 * 6. 専門性セクション
 *================================================*/
.professional-section {
    background-color: var(--surface-color-solid);
}

.professional-content {
    display: flex;
    gap: 60px;
    align-items: center;
}

.professional-image {
    flex: 0 0 300px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: var(--shadow-strong);
    border: 5px solid var(--primary-color);
}

.professional-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.professional-text {
    flex: 1;
}

.section-title-left {
    text-align: left;
    font-size: 2.8rem;
    margin-bottom: 1rem;
    font-weight: 700;
    color: transparent;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
}

.section-subtitle-left {
    text-align: left;
    font-size: 1.1rem;
    color: var(--text-color-secondary);
    margin-bottom: 2rem;
}

.professional-text blockquote {
    font-size: 1.1rem;
    border-left: 4px solid var(--primary-color);
    padding-left: 25px;
    margin: 0 0 20px 0;
    font-style: italic;
    color: var(--text-color-secondary);
}

.professional-name {
    text-align: right;
    font-weight: bold;
    font-size: 1.1rem;
    color: var(--text-color);
}

/*================================================
 * 7. 実績セクション
 *================================================*/
.works-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 250px);
    gap: 20px;
}

.work-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.work-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-strong);
    z-index: 10;
}

.work-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.work-item:hover img {
    transform: scale(1.1);
}

.work-item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0) 100%);
    color: white;
    transform: translateY(30%);
    opacity: 0;
    transition: all 0.4s ease;
}

.work-item:hover .work-item-overlay {
    transform: translateY(0);
    opacity: 1;
}

.work-item-overlay h5 {
    font-size: 1.4rem;
    margin-bottom: 5px;
}

.work-item-overlay p {
    font-size: 0.9rem;
    color: var(--text-color-secondary);
}

.qualification-card {
    background: var(--surface-color-solid);
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.qualification-card h4 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.qualification-card ul {
    list-style: none;
}

.qualification-card ul li {
    font-size: 1.1rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.qualification-card ul li i {
    font-size: 1.5rem;
    margin-right: 15px;
    color: var(--secondary-color);
    width: 30px;
    text-align: center;
}

/*================================================
 * 8. お客様の声セクション
 *================================================*/
.testimonials-section {
    background-color: var(--surface-color-solid);
}

.testimonial-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.testimonial {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 30px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.testimonial p {
    font-style: italic;
    margin-bottom: 20px;
    color: var(--text-color-secondary);
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 15px;
    object-fit: cover;
}

.testimonial-author span {
    font-weight: bold;
    color: var(--text-color);
}

/*================================================
 * 9. FAQセクション
 *================================================*/
.faq-container {
    max-width: 750px;
    margin: 0 auto;
}

.faq-item {
    background: var(--surface-color-solid);
    border-radius: 10px;
    margin-bottom: 10px;
    border: 1px solid var(--border-color);
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
    font-size: 1.1rem;
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, padding 0.5s ease;
}

.faq-answer p {
    padding: 0 20px 20px;
    color: var(--text-color-secondary);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-item.active .faq-answer {
    max-height: 200px; /* Adjust as needed */
    padding-bottom: 20px;
}

/*================================================
 * 10. フッター
 *================================================*/
.footer-section {
    background-color: #000;
    color: var(--text-color-secondary);
    text-align: center;
    padding: 80px 20px 30px;
}

.footer-section .section-title {
    font-size: 2.5rem;
}

.footer-message {
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 30px;
    color: var(--text-color);
}

.footer-section .cta-button {
    font-size: 1.2rem;
    padding: 18px 40px;
}

.footer-section .line-button {
    background: #06C755;
}

.footer-section .line-button:hover {
    background: #05a546;
    box-shadow: 0 6px 20px rgba(6, 199, 85, 0.4);
}

.contact-info {
    margin: 40px 0;
    font-size: 0.9rem;
}

.footer-bottom {
    margin-top: 40px;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    font-size: 0.9rem;
}

/*================================================
 * 11. レスポンシブ対応
 *================================================*/
@media (max-width: 992px) {
    .works-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        gap: 20px;
    }
    .work-item {
        height: 250px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 0;
        flex-direction: column;
        justify-content: center;
        background-color: var(--background-color);
        width: 100%;
        height: 100vh;
        text-align: center;
        transition: 0.3s;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 20px 0;
    }
    
    .nav-link {
        font-size: 1.5rem;
    }

    .hamburger {
        display: block;
        z-index: 1001; /* Ensure it's above the nav menu */
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title, .section-title-left {
        font-size: 2.2rem;
    }

    .professional-content {
        flex-direction: column;
        text-align: center;
    }

    .professional-image {
        margin-bottom: 30px;
    }

    .section-title-left, .section-subtitle-left, .professional-name {
        text-align: center;
    }
}

/*================================================
 * 12. アニメーション
 *================================================*/
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/*================================================
 * 13. Service Details
 *================================================*/
.service-details {
    background: var(--surface-color-solid);
    border: 1px solid var(--border-color);
    padding: 35px;
    border-radius: 15px;
    margin-top: 2rem;
    text-align: left;
}

.service-details h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 0.5rem;
}

.service-details h3:first-child {
    margin-top: 0;
}

.service-details h4 {
    font-size: 1.3rem;
    color: var(--text-color);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.service-details p, .service-details ul {
    color: var(--text-color-secondary);
    margin-bottom: 1rem;
}

.service-details ul {
    list-style-position: inside;
    padding-left: 1rem;
}

.service-details ul li {
    margin-bottom: 0.5rem;
}

.service-details strong {
    color: var(--text-color);
}