/* ==========================================
   TYK株式会社ドローン事業部 スタイルシート
   ========================================== */

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

:root {
    --primary-color: #0a1929;
    --secondary-color: #1e3a5f;
    --accent-color: #00d9ff;
    --accent-hover: #00b8d4;
    --text-light: #ffffff;
    --text-gray: #b0bec5;
    --bg-dark: #0d1b2a;
    --gradient-1: linear-gradient(135deg, #0a1929 0%, #1e3a5f 100%);
    --gradient-2: linear-gradient(135deg, #00d9ff 0%, #0066ff 100%);
}

body {
    font-family: 'Inter', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* グリッド背景アニメーション */
.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(90deg, rgba(0, 217, 255, 0.05) 1px, transparent 1px),
        linear-gradient(rgba(0, 217, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* ヘッダー */
header {
    background: rgba(10, 25, 41, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 217, 255, 0.2);
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 0.5rem 0;
    box-shadow: 0 5px 20px rgba(0, 217, 255, 0.1);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    font-size: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--accent-color);
    transition: all 0.3s ease;
}

/* メインコンテンツ */
main {
    margin-top: 80px;
    min-height: calc(100vh - 80px);
}

/* セクション共通 */
section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

/* ヒーローセクション */
.hero {
    text-align: center;
    padding: 8rem 2rem 5rem;
    background: var(--gradient-1);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.1) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-30px); }
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.hero .tagline {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 2rem;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--gradient-2);
    color: var(--text-light);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
}

.btn-outline:hover {
    background: var(--accent-color);
    color: var(--primary-color);
}

/* カード */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    margin-left: auto;
    margin-right: auto;
    max-width: 1200px;
    justify-items: center;
    width: 100%;
}

.card {
    background: rgba(30, 58, 95, 0.3);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: 15px;
    padding: 2rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    width: 100%;
    max-width: 500px;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-color);
    box-shadow: 0 15px 40px rgba(0, 217, 255, 0.2);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* お問い合わせフォーム */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

.form-container {
    background: rgba(30, 58, 95, 0.3);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: 15px;
    padding: 2.5rem;
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--accent-color);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(10, 25, 41, 0.5);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 8px;
    color: var(--text-light);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.2);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-gray);
}

.honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-card {
    background: rgba(30, 58, 95, 0.3);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: 15px;
    padding: 2rem;
    backdrop-filter: blur(10px);
}

.info-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-card p {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.info-card a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.info-card a:hover {
    color: var(--text-light);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 50%;
    color: var(--accent-color);
    font-size: 1.3rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--accent-color);
    color: var(--primary-color);
    transform: translateY(-5px);
}

/* 成功/エラーメッセージ */
.message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: none;
}

.message.show {
    display: block;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.success {
    background: rgba(0, 217, 100, 0.1);
    border: 1px solid rgba(0, 217, 100, 0.3);
    color: #00ff88;
}

.message.error {
    background: rgba(255, 50, 50, 0.1);
    border: 1px solid rgba(255, 50, 50, 0.3);
    color: #ff5555;
}

/* FAQ */
.faq-container {
    margin-top: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.faq-item {
    background: rgba(30, 58, 95, 0.3);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--accent-color);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-light);
}

.faq-icon {
    color: var(--accent-color);
    transition: transform 0.3s ease;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    color: var(--text-gray);
    padding-top: 0;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-top: 1rem;
}

/* フッター */
footer {
    background: rgba(10, 25, 41, 0.95);
    border-top: 1px solid rgba(0, 217, 255, 0.2);
    padding: 3rem 2rem 1.5rem;
    margin-top: 5rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section a {
    color: var(--text-gray);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 217, 255, 0.1);
    color: var(--text-gray);
}

/* レスポンシブ */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(10, 25, 41, 0.98);
        width: 100%;
        text-align: center;
        transition: left 0.3s ease;
        padding: 2rem 0;
        border-bottom: 1px solid rgba(0, 217, 255, 0.2);
    }

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

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .tagline {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .contact-container {
        grid-template-columns: 1fr;
    }

    .cards {
        grid-template-columns: 1fr;
    }
}

/* アニメーション */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* 理念セクション */
.philosophy-section {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1) 0%, rgba(0, 102, 255, 0.05) 100%);
    border: 2px solid rgba(0, 217, 255, 0.3);
    border-radius: 20px;
    padding: 3rem;
    margin: 3rem auto;
    max-width: 900px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.philosophy-section::before {
    content: '"';
    position: absolute;
    top: -20px;
    left: 30px;
    font-size: 120px;
    color: rgba(0, 217, 255, 0.1);
    font-family: Georgia, serif;
}

.philosophy-section h3 {
    font-size: 2rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.philosophy-section p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
}

/* 認定バッジ */
.certification-badges {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin: 2rem auto;
    max-width: 1200px;
}

.badge {
    background: rgba(30, 58, 95, 0.5);
    border: 2px solid var(--accent-color);
    border-radius: 15px;
    padding: 1.5rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    min-width: 150px;
}

.badge:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.3);
    background: rgba(30, 58, 95, 0.7);
}

.badge-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
}

.badge-text {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-light);
    text-align: center;
    line-height: 1.4;
}

/* パートナーシップセクション */
.partnership {
    background: rgba(30, 58, 95, 0.3);
    border-left: 4px solid var(--accent-color);
    padding: 1.5rem 2rem;
    margin: 2rem 0;
    border-radius: 10px;
}

.partnership h4 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.partnership p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* 担当者情報 */
.contact-person {
    background: rgba(30, 58, 95, 0.3);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: 15px;
    padding: 2rem;
    margin-top: 2rem;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.contact-person-icon {
    font-size: 4rem;
    color: var(--accent-color);
}

.contact-person-info h4 {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.contact-person-info p {
    color: var(--text-gray);
    margin-bottom: 0.3rem;
}

.contact-person-info a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-person-info a:hover {
    color: var(--text-light);
}

/* 会社情報テーブル */
.company-info-table {
    max-width: 900px;
    margin: 0 auto;
}

.company-info-table table {
    width: 100%;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .philosophy-section {
        padding: 2rem 1.5rem;
    }
    
    .philosophy-section h3 {
        font-size: 1.5rem;
    }
    
    .certification-badges {
        gap: 1rem;
    }
    
    .badge {
        min-width: 120px;
        padding: 1rem 1.5rem;
    }
    
    .contact-person {
        flex-direction: column;
        text-align: center;
    }
}