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

/* 基本設定 - 未来的AIダークテーマカラーパレット */
:root {
    --dark-bg: #0a0a0f;
    --dark-navy: #0f1419;
    --primary-electric-blue: #00d4ff;
    --primary-blue-glow: #0099cc;
    --neon-purple: #8b5cf6;
    --neon-pink: #ec4899;
    --accent-cyan: #22d3ee;
    --text-white: #ffffff;
    --text-gray-light: #e2e8f0;
    --text-gray: #94a3b8;
    --text-gray-dark: #64748b;
    --surface-dark: #1e1e2e;
    --surface-glass: rgba(255, 255, 255, 0.05);
    --border-glow: rgba(0, 212, 255, 0.3);
    --border-subtle: rgba(255, 255, 255, 0.1);
    --success-green: #10b981;
    --error-red: #ef4444;
    --glow-blue: 0 0 20px rgba(0, 212, 255, 0.5);
    --glow-purple: 0 0 20px rgba(139, 92, 246, 0.5);
    --glow-cyan: 0 0 20px rgba(34, 211, 238, 0.5);
    --shadow-dark: 0 4px 20px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 8px 32px rgba(0, 212, 255, 0.2);
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.7;
    color: var(--text-white);
    background: var(--dark-bg);
    position: relative;
    overflow-x: hidden;
}

/* 未来的AI背景レイヤー */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(34, 211, 238, 0.05) 0%, transparent 70%);
    z-index: -2;
}

/* メインビジュアル画像スタイル */
.main-visual-image {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 20px;
    margin-bottom: 40px;
}

.hero-image {
    max-width: 1000px;
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.3),
        0 0 50px rgba(0, 212, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 3px solid rgba(0, 212, 255, 0.2);
}

.hero-image:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 
        0 35px 100px rgba(0, 0, 0, 0.4),
        0 0 70px rgba(0, 212, 255, 0.3);
}

@media (max-width: 1024px) {
    .main-visual-image {
        padding: 30px 15px;
    }
    
    .hero-image {
        max-width: 90%;
        border-radius: 16px;
    }
}

@media (max-width: 768px) {
    .main-visual-image {
        padding: 20px 10px;
        margin-bottom: 30px;
    }
    
    .hero-image {
        max-width: 100%;
        border-radius: 12px;
        border: 2px solid rgba(0, 212, 255, 0.2);
    }
    
    .hero-image:hover {
        transform: translateY(-5px) scale(1.01);
    }
}

@media (max-width: 480px) {
    .main-visual-image {
        padding: 15px 5px;
    }
    
    .hero-image {
        border-radius: 10px;
    }
}



/* ニューラルネットワーク背景パターン */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 1px 1px, rgba(0, 212, 255, 0.3) 1px, transparent 0);
    background-size: 50px 50px;
    opacity: 0.1;
    z-index: -1;
    animation: networkPulse 4s ease-in-out infinite;
}

@keyframes networkPulse {
    0%, 100% { opacity: 0.1; }
    50% { opacity: 0.2; }
}

/* コンテナ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ヘッダー */
.header {
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glow);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-glow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-electric-blue);
    margin-bottom: 2px;
    text-shadow: var(--glow-blue);
}

.logo .tagline {
    font-size: 0.8rem;
    color: var(--text-gray);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav ul li a {
    text-decoration: none;
    color: var(--text-gray-light);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    padding: 8px 16px;
    border-radius: 8px;
    position: relative;
}

.nav ul li a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, var(--primary-electric-blue), var(--neon-purple));
    opacity: 0;
    border-radius: 8px;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.nav ul li a:hover {
    color: var(--text-white);
    text-shadow: var(--glow-blue);
}

.nav ul li a:hover::before {
    opacity: 0.2;
}

/* 固定CTAボタン */
.fixed-cta {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    opacity: 0;
    transform: translateY(100px);
    transition: all 0.3s ease;
}

.fixed-cta.show {
    opacity: 1;
    transform: translateY(0);
}

.fixed-cta-button {
    background: linear-gradient(135deg, var(--primary-electric-blue), var(--neon-purple));
    color: var(--text-white);
    border: none;
    padding: 16px 24px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--glow-blue);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border-glow);
}

.fixed-cta-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 
        var(--glow-purple),
        0 10px 25px rgba(139, 92, 246, 0.4);
}

/* メインビジュアル - プレミアムデザイン */
.main-visual {
    background: 
        linear-gradient(135deg, #0f172a 0%, #1e293b 25%, #334155 50%, #475569 75%, #64748b 100%);
    padding: 40px 0 100px;
    border-bottom: 3px solid #0ea5e9;
    position: relative;
    overflow: hidden;
    color: #ffffff;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.main-visual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 25% 25%, rgba(14, 165, 233, 0.15) 0%, transparent 60%),
        radial-gradient(circle at 75% 75%, rgba(139, 92, 246, 0.15) 0%, transparent 60%),
        linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.03) 50%, transparent 70%);
    animation: ambientGlow 8s ease-in-out infinite alternate;
}

.main-visual::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('assets/cover.pdf') center/cover no-repeat;
    opacity: 0.1;
    z-index: 1;
}

@keyframes ambientGlow {
    0% { opacity: 0.5; }
    100% { opacity: 0.8; }
}

/* セミナーハイライト - プレミアムデザイン */
.seminar-highlight {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(30px);
    padding: 32px;
    border-radius: 20px;
    margin-bottom: 40px;
    border: 2px solid rgba(14, 165, 233, 0.4);
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    position: relative;
    text-align: center;
}

.highlight-text {
    font-size: 1.3rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 16px;
    line-height: 1.6;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.highlight-subtitle {
    font-size: 1.1rem;
    color: #e2e8f0;
    font-weight: 400;
    margin: 0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

/* 企業紹介とセミナー説明 - 未来的デザイン */
.company-intro {
    background: var(--surface-glass);
    backdrop-filter: blur(20px);
    padding: 30px;
    border-radius: 16px;
    margin-bottom: 30px;
    border: 1px solid var(--border-glow);
    border-left: 4px solid var(--primary-electric-blue);
    box-shadow: var(--glow-blue);
    position: relative;
}

.company-intro::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--primary-electric-blue), var(--neon-purple), var(--primary-electric-blue));
    animation: scanLine 3s linear infinite;
}

@keyframes scanLine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.company-intro p {
    margin: 0;
    font-weight: 500;
    color: var(--text-gray-light);
}

.seminar-description {
    position: relative;
    z-index: 1;
}

.seminar-description p {
    margin-bottom: 16px;
    color: var(--text-gray-light);
    line-height: 1.8;
}

.seminar-description p:last-child {
    margin-bottom: 0;
}

.seminar-description strong {
    color: var(--primary-electric-blue);
    text-shadow: var(--glow-blue);
}

/* プレミアムヒーローヴィジュアル */
.hero-visual {
    position: relative;
    background: 
        linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 41, 59, 0.95) 50%, rgba(51, 65, 85, 0.95) 100%);
    padding: 80px 40px;
    margin-bottom: 60px;
    border-radius: 24px;
    overflow: hidden;
    border: 2px solid #0ea5e9;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(14, 165, 233, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    color: #ffffff;
    backdrop-filter: blur(20px);
}

.hero-visual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('assets/cover.pdf') center/contain no-repeat;
    opacity: 0.15;
    z-index: 1;
}

.hero-visual::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 30%, rgba(14, 165, 233, 0.1) 50%, transparent 70%),
        radial-gradient(circle at 30% 30%, rgba(139, 92, 246, 0.2) 0%, transparent 50%);
    animation: heroShimmer 6s ease-in-out infinite alternate;
    z-index: 1;
}

@keyframes heroShimmer {
    0% { opacity: 0.3; }
    100% { opacity: 0.6; }
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

/* AI回路パターン */
.geometric-shape {
    position: absolute;
    border-radius: 50%;
    backdrop-filter: blur(15px);
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: -100px;
    right: -100px;
    background: radial-gradient(circle, var(--primary-electric-blue) 0%, transparent 70%);
    opacity: 0.3;
    animation: pulseGlow 3s ease-in-out infinite;
}

.shape-2 {
    width: 200px;
    height: 200px;
    bottom: -50px;
    left: -50px;
    background: radial-gradient(circle, var(--neon-purple) 0%, transparent 70%);
    opacity: 0.2;
    animation: pulseGlow 4s ease-in-out infinite reverse;
}

.shape-3 {
    width: 150px;
    height: 150px;
    top: 30%;
    left: 15%;
    background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
    opacity: 0.25;
    animation: floatAndGlow 6s ease-in-out infinite;
}

/* デジタル波動エフェクト */
.hero-visual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(0, 212, 255, 0.03) 2px,
            rgba(0, 212, 255, 0.03) 4px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(139, 92, 246, 0.03) 2px,
            rgba(139, 92, 246, 0.03) 4px
        );
    animation: digitalWave 8s linear infinite;
}

@keyframes pulseGlow {
    0%, 100% { 
        opacity: 0.2;
        transform: scale(1);
    }
    50% { 
        opacity: 0.4;
        transform: scale(1.1);
    }
}

@keyframes floatAndGlow {
    0%, 100% { 
        transform: translateY(0px) scale(1);
        opacity: 0.25;
    }
    50% { 
        transform: translateY(-30px) scale(1.05);
        opacity: 0.4;
    }
}

@keyframes digitalWave {
    0% { transform: translateX(0px); }
    100% { transform: translateX(20px); }
}

.hero-content-wrapper {
    position: relative;
    z-index: 10;
    text-align: center;
    color: #ffffff;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    background: var(--surface-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glow);
    border-radius: 50px;
    padding: 16px 32px;
    margin-bottom: 40px;
    gap: 20px;
    box-shadow: var(--glow-blue);
}

.badge-text {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary-electric-blue);
    text-shadow: var(--glow-blue);
}

.badge-time {
    background: linear-gradient(45deg, var(--primary-electric-blue), var(--accent-cyan));
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 3px;
    color: var(--dark-bg);
    text-shadow: none;
    box-shadow: var(--glow-cyan);
}

.hero-main-text {
    margin-bottom: 50px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff, #0ea5e9, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    text-shadow: 0 0 40px rgba(14, 165, 233, 0.5);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    text-align: center;
}

.title-line1, .title-line2 {
    display: block;
    text-align: center;
}

.title-line1 {
    margin-bottom: 10px;
}

.title-line2 {
    margin-bottom: 20px;
}

.hero-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-electric-blue), var(--neon-purple));
    box-shadow: var(--glow-blue);
    animation: lineGlow 2s ease-in-out infinite alternate;
}

@keyframes lineGlow {
    0% { box-shadow: var(--glow-blue); }
    100% { box-shadow: var(--glow-purple); }
}

.hero-subtitle {
    display: block;
    font-size: 1.6rem;
    font-weight: 300;
    color: #ffffff;
    margin-top: 20px;
    opacity: 1;
    letter-spacing: 1px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.7);
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 32px 28px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(30px);
    border: 2px solid rgba(14, 165, 233, 0.4);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.feature-item:hover {
    transform: translateY(-6px) scale(1.03);
    border-color: #0ea5e9;
    box-shadow: 
        0 15px 40px rgba(0, 0, 0, 0.3),
        0 0 30px rgba(14, 165, 233, 0.4);
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.6s ease;
}

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--glow-blue);
    border-color: var(--primary-electric-blue);
}

.feature-item:hover::before {
    left: 100%;
}

.feature-item i {
    font-size: 3rem;
    margin-bottom: 12px;
    color: #0ea5e9;
    transition: all 0.3s ease;
    text-shadow: 0 0 20px rgba(14, 165, 233, 0.6);
}

.feature-item:hover i {
    color: #22d3ee;
    transform: scale(1.15);
    text-shadow: 0 0 30px rgba(34, 211, 238, 0.8);
}

.feature-item span {
    font-weight: 600;
    font-size: 1.1rem;
    text-align: center;
    color: #ffffff;
    letter-spacing: 0.5px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.visual-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: left;
}

.event-category {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.category-tag {
    background: var(--primary-blue);
    color: var(--white);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.event-date {
    color: var(--text-gray);
    font-size: 0.9rem;
    font-weight: 500;
}

.main-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.3;
    margin-bottom: 16px;
    text-align: center;
}

.main-title .title-line1, .main-title .title-line2 {
    display: block;
    text-align: center;
}

.main-title .title-line1 {
    margin-bottom: 8px;
}

.main-title .title-line2 {
    margin-bottom: 16px;
}

.main-title .subtitle {
    font-size: 1.8rem;
    color: var(--primary-blue);
    font-weight: 500;
}

.event-summary {
    margin-bottom: 40px;
}

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

/* 基本情報テーブル - 統一デザイン */
.quick-info {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(30px);
    border: 2px solid rgba(14, 165, 233, 0.4);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 50px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    position: relative;
    color: #ffffff;
}

.info-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 20px;
}

.info-row:last-child {
    margin-bottom: 0;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-item .label {
    font-size: 0.9rem;
    color: #94a3b8;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.info-item .value {
    font-size: 1rem;
    color: #ffffff;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.info-item .value.free {
    color: var(--primary-electric-blue);
    font-weight: 700;
    text-shadow: var(--glow-blue);
}

.info-item .value.event-date-large {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-electric-blue);
    text-shadow: var(--glow-blue);
}

.info-row.single-column {
    grid-template-columns: 1fr;
}

/* 講師ペア表示 */
.hero-speakers {
    margin-bottom: 30px;
}

.speaker-pair {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.speaker-info {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(30px);
    border: 2px solid rgba(14, 165, 233, 0.6);
    border-radius: 20px;
    padding: 24px;
    min-width: 220px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.speaker-info:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: #0ea5e9;
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.4),
        0 0 30px rgba(14, 165, 233, 0.3);
}

.speaker-info h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 8px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.speaker-info p {
    font-size: 0.95rem;
    color: #e2e8f0;
    line-height: 1.4;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.speaker-vs {
    font-size: 2rem;
    font-weight: 900;
    color: var(--neon-purple);
    text-shadow: var(--glow-purple);
}

.hero-subtitle-top {
    font-size: 1.3rem;
    color: #f1f5f9;
    margin-bottom: 24px;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    font-weight: 400;
}

/* CTAセクション - 統一デザイン */
.cta-section {
    text-align: center;
    position: relative;
    z-index: 10;
}

.main-cta-button {
    background: linear-gradient(45deg, var(--primary-electric-blue), var(--accent-cyan));
    color: var(--dark-bg);
    border: none;
    padding: 20px 50px;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: var(--glow-cyan);
    transition: all 0.4s ease;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.main-cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.6s ease;
}

.main-cta-button:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 
        var(--glow-cyan),
        0 15px 35px rgba(0, 212, 255, 0.4);
}

.main-cta-button:hover::before {
    left: 100%;
}

.cta-note {
    font-size: 0.9rem;
    color: var(--text-gray);
    opacity: 0.8;
}

/* セクション共通 - 統一デザイン */
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 50px;
    padding-bottom: 16px;
    border-bottom: 2px solid #0ea5e9;
    position: relative;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.section-title::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--primary-electric-blue);
    border-radius: 50%;
    box-shadow: 
        0 0 10px var(--primary-electric-blue),
        20px 0 0 var(--neon-purple),
        -20px 0 0 var(--accent-cyan);
    animation: dotPulse 2s ease-in-out infinite;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-electric-blue), var(--neon-purple), var(--accent-cyan));
    animation: titleGlow 3s ease-in-out infinite alternate;
}

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

@keyframes titleGlow {
    0% { box-shadow: 0 0 5px var(--primary-electric-blue); }
    100% { box-shadow: 0 0 20px var(--neon-purple); }
}

/* 概要セクション */
.overview {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
    color: #ffffff;
}

/* 開催概要の注意事項 */
.schedule-note {
    background: var(--light-blue);
    border: 1px solid #b3d9ff;
    border-radius: 8px;
    padding: 24px;
    margin-top: 30px;
}

.schedule-note h4 {
    color: var(--primary-blue);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.schedule-note ul {
    padding-left: 20px;
    color: var(--text-gray);
}

.schedule-note ul li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.overview-content {
    display: grid;
    gap: 50px;
}

.overview-subtitle {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.overview-description p {
    font-size: 1rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 40px;
}

/* 情報テーブル */
.info-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--light-gray);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.info-table th,
.info-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-gray);
}

.info-table th {
    background: var(--primary-blue);
    color: var(--white);
    font-weight: 600;
    width: 140px;
    vertical-align: top;
}

.info-table td {
    background: var(--white);
    color: var(--text-dark);
}

.info-table tr:last-child th,
.info-table tr:last-child td {
    border-bottom: none;
}

.free-badge {
    background: var(--success-green);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
}

/* プログラムセクション */
.program {
    padding: 80px 0;
    background: var(--light-gray);
}

.program-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 30px;
    margin-bottom: 40px;
    position: relative;
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 60px;
    top: 60px;
    bottom: -40px;
    width: 2px;
    background: var(--border-gray);
}

.timeline-item .time {
    background: var(--primary-blue);
    color: var(--white);
    padding: 12px 16px;
    border-radius: 6px;
    font-weight: 600;
    text-align: center;
    font-size: 0.9rem;
    height: fit-content;
}

.timeline-item .content {
    background: var(--white);
    padding: 24px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-gray);
}

.timeline-item .content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.timeline-item .content p {
    color: var(--text-gray);
    margin-bottom: 12px;
}

.timeline-item .content ul {
    padding-left: 20px;
    color: var(--text-gray);
}

.timeline-item .content ul li {
    margin-bottom: 6px;
}

/* 講師紹介 */
.speakers {
    padding: 80px 0;
    background: linear-gradient(135deg, #334155 0%, #475569 50%, #64748b 100%);
    color: #ffffff;
}

.speakers-content {
    display: grid;
    gap: 50px;
}

.speaker-card {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(14, 165, 233, 0.3);
    backdrop-filter: blur(20px);
}

.speaker-photo {
    display: flex;
    justify-content: center;
}

.speaker-image {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #0ea5e9;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.photo-placeholder {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 4rem;
}

.speaker-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 8px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.speaker-position {
    font-size: 1rem;
    color: #0ea5e9;
    font-weight: 600;
    margin-bottom: 24px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.speaker-profile h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 20px 0 8px 0;
    border-left: 4px solid var(--primary-blue);
    padding-left: 12px;
}

.speaker-profile h4:first-child {
    margin-top: 0;
}

.speaker-profile p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 16px;
}

.speaker-profile ul {
    padding-left: 20px;
    color: var(--text-gray);
    margin-bottom: 16px;
}

.speaker-profile ul li {
    margin-bottom: 4px;
}

/* 講師の資格・認定バッジ */
.certifications {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.cert-badge {
    background: var(--primary-blue);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.profile-summary {
    margin-bottom: 16px;
}

.profile-summary p {
    color: var(--text-gray);
    line-height: 1.7;
}

/* 専門分野タグ */
.expertise-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.expertise-tags .tag {
    background: var(--light-gray);
    color: var(--text-dark);
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border-gray);
}

/* 参加対象・学習内容 */
.benefits {
    padding: 80px 0;
    background: linear-gradient(135deg, #475569 0%, #64748b 50%, #1e293b 100%);
    color: #ffffff;
}

.benefits-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.target-list {
    space-y: 16px;
}

.target-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--white);
    border-radius: 8px;
    margin-bottom: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-gray);
}

.target-item i {
    color: var(--success-green);
    font-size: 1.2rem;
    width: 20px;
    text-align: center;
}

.target-item span {
    color: var(--text-dark);
    font-weight: 500;
}

.learning-grid {
    display: grid;
    gap: 24px;
}

.learning-item {
    background: var(--white);
    padding: 24px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-gray);
    position: relative;
}

.learning-number {
    position: absolute;
    top: -12px;
    left: 24px;
    background: var(--accent-orange);
    color: var(--white);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.learning-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 8px 0 12px 0;
}

.learning-item p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* 推奨対象グリッド - 4つのカードを横一列に均等配置 */
.recommend-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
    justify-items: center;
}

@media (max-width: 1024px) {
    .recommend-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .recommend-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .recommend-card {
        max-width: 100%;
        padding: 24px 20px;
    }
}

.recommend-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 28px 20px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(14, 165, 233, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    backdrop-filter: blur(20px);
    max-width: 280px;
    width: 100%;
}

.recommend-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.recommend-card.primary {
    border-top: 4px solid var(--primary-blue);
}

.recommend-card.secondary {
    border-top: 4px solid var(--accent-orange);
}

.recommend-card.accent {
    border-top: 4px solid var(--neon-purple);
}

.recommend-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.5rem;
    color: var(--white);
}

.recommend-card.primary .recommend-icon {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
}

.recommend-card.secondary .recommend-icon {
    background: linear-gradient(135deg, var(--accent-orange), #ff8533);
}

.recommend-card.accent .recommend-icon {
    background: linear-gradient(135deg, var(--neon-purple), #a855f7);
}

.recommend-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 12px;
    line-height: 1.4;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.recommend-card p {
    color: #e2e8f0;
    line-height: 1.6;
    font-size: 0.95rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

/* 申し込みセクション */
.registration {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
    color: #ffffff;
}

.registration-info {
    max-width: 800px;
    margin: 0 auto 50px;
}

.info-box {
    background: rgba(14, 165, 233, 0.1);
    border: 2px solid rgba(14, 165, 233, 0.3);
    border-radius: 12px;
    padding: 24px;
    backdrop-filter: blur(20px);
}

.info-box h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #0ea5e9;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.info-box ul {
    padding-left: 20px;
    color: #e2e8f0;
}

.info-box ul li {
    margin-bottom: 8px;
}

/* フォーム - 白背景デザイン */
.registration-form {
    max-width: 600px;
    margin: 0 auto;
    background: #ffffff;
    padding: 50px;
    border-radius: 20px;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 30px rgba(0, 212, 255, 0.2);
    border: 2px solid var(--border-glow);
    position: relative;
}

.registration-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(0, 212, 255, 0.05) 0%, 
        rgba(139, 92, 246, 0.05) 100%);
    border-radius: 20px;
    z-index: -1;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: #333333;
    margin-bottom: 8px;
    font-size: 1rem;
}

.required {
    color: var(--error-red);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #ffffff;
    color: #333333;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-electric-blue);
    box-shadow: 
        0 0 0 3px rgba(0, 212, 255, 0.1),
        0 4px 12px rgba(0, 212, 255, 0.15);
    transform: translateY(-1px);
}

.submit-button {
    width: 100%;
    background: linear-gradient(45deg, var(--primary-electric-blue), var(--accent-cyan));
    color: #ffffff;
    border: none;
    padding: 20px;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 
        0 8px 20px rgba(0, 212, 255, 0.3),
        0 0 30px rgba(0, 212, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.submit-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.submit-button:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 
        0 15px 35px rgba(0, 212, 255, 0.4),
        0 0 50px rgba(0, 212, 255, 0.3);
}

.submit-button:hover::before {
    left: 100%;
}

/* フォームメッセージ */
.form-message {
    max-width: 600px;
    margin: 30px auto;
    padding: 24px;
    border-radius: 8px;
    text-align: center;
}

.form-message.success {
    background: rgba(40, 167, 69, 0.1);
    border: 2px solid var(--success-green);
    color: var(--success-green);
}

.form-message.error {
    background: rgba(220, 53, 69, 0.1);
    border: 2px solid var(--error-red);
    color: var(--error-red);
}

.form-message i {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.form-message h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 8px;
}

/* 申し込みボタン */
.registration-button-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.registration-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(45deg, var(--primary-electric-blue), var(--accent-cyan));
    color: #ffffff;
    text-decoration: none;
    padding: 24px 48px;
    font-size: 1.3rem;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.4s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 
        0 12px 25px rgba(0, 212, 255, 0.3),
        0 0 40px rgba(0, 212, 255, 0.2);
    position: relative;
    overflow: hidden;
    border: 2px solid var(--border-glow);
}

.registration-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.registration-button:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 
        0 20px 40px rgba(0, 212, 255, 0.4),
        0 0 60px rgba(0, 212, 255, 0.3);
    color: #ffffff;
}

.registration-button:hover::before {
    left: 100%;
}

.registration-note {
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--text-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    opacity: 0.8;
}

.registration-note i {
    color: var(--primary-electric-blue);
}

/* フッター */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 50px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    margin-bottom: 30px;
}

.footer-main h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--secondary-blue);
}

.footer-main p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.6;
}

.contact-info {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-info p {
    color: var(--text-gray-light);
    margin-bottom: 8px;
    font-size: 0.9rem;
    line-height: 1.5;
}

.contact-info .contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.contact-item i {
    color: var(--secondary-blue);
    width: 16px;
}

.footer-links h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--white);
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 8px;
}

.footer-links ul li a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: var(--secondary-blue);
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 20px;
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .header-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .nav ul {
        gap: 20px;
    }

    .main-visual {
        padding: 30px 0 50px;
    }

    .hero-visual {
        padding: 50px 20px;
        margin-bottom: 40px;
    }

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

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .hero-features {
        gap: 30px;
    }

    .feature-item {
        padding: 24px 20px;
        min-width: 140px;
    }

    .feature-item i {
        font-size: 2rem;
    }

    .shape-1 {
        width: 200px;
        height: 200px;
        top: -75px;
        right: -75px;
    }

    .shape-2 {
        width: 150px;
        height: 150px;
        bottom: -40px;
        left: -40px;
    }

    .shape-3 {
        width: 100px;
        height: 100px;
    }

    .company-intro {
        padding: 24px;
    }

    .quick-info {
        padding: 30px;
    }

    .main-title {
        font-size: 2.2rem;
    }

    .main-title .subtitle {
        font-size: 1.4rem;
    }

    .info-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .overview-content {
        gap: 40px;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .timeline-item:not(:last-child)::after {
        display: none;
    }

    .speaker-card {
        grid-template-columns: 1fr;
        gap: 24px;
        text-align: center;
    }

    .benefits-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .fixed-cta {
        bottom: 10px;
        right: 10px;
    }

    .fixed-cta-button {
        padding: 12px 16px;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 1.8rem;
    }

    .main-title .subtitle {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .registration-form {
        padding: 40px 24px;
        margin: 0 16px;
    }

    .quick-info {
        padding: 20px;
    }

    .speaker-card {
        padding: 24px;
    }

    .photo-placeholder {
        width: 120px;
        height: 120px;
        font-size: 3rem;
    }

    .hero-visual {
        padding: 40px 16px;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-features {
        flex-direction: column;
        gap: 20px;
    }

    .feature-item {
        padding: 20px;
        flex-direction: row;
        gap: 16px;
    }

    .feature-item i {
        font-size: 1.8rem;
    }

    .hero-badge {
        flex-direction: column;
        gap: 12px;
        padding: 20px 24px;
    }

    .badge-text {
        font-size: 0.95rem;
    }

    .badge-time {
        font-size: 1.1rem;
        letter-spacing: 2px;
    }

    .main-cta-button {
        padding: 16px 40px;
        font-size: 1rem;
    }

    .company-intro {
        padding: 20px;
    }

    .quick-info {
        padding: 24px;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .company-intro {
        padding: 16px;
    }

    .certifications {
        justify-content: center;
    }

    .cert-badge {
        font-size: 0.75rem;
        padding: 3px 8px;
    }

    .expertise-tags {
        justify-content: center;
    }

    .recommend-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .recommend-card {
        padding: 24px 20px;
    }

    .recommend-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }

    .schedule-note {
        padding: 20px;
    }

    .registration-form {
        padding: 30px 20px;
        margin: 0 12px;
    }

    .form-group input,
    .form-group select {
        padding: 14px 16px;
        font-size: 0.95rem;
    }

    .submit-button {
        padding: 18px;
        font-size: 1.1rem;
    }
}