/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #DC143C;
    --secondary-color: #1e40af;
    --dark-bg: #1a1a1a;
    --light-bg: #f8fafc;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #fff;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    position: sticky;
    top: 0;
    background: #fff;
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 16px 0;
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 32px;
    width: auto;
    display: block;
}

.logo-text {
    font-size: 28px;
    font-weight: 900;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 16px;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background: #b01030;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-small {
    padding: 10px 24px;
    font-size: 14px;
}

.btn-large {
    padding: 18px 48px;
    font-size: 18px;
}

.btn-floating {
    padding: 16px 32px;
    box-shadow: var(--shadow-lg);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: #fff;
    padding: 80px 0 100px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.urgent-badge {
    display: inline-block;
    background: var(--warning-color);
    color: #fff;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 16px;
    animation: shake 0.5s infinite alternate;
}

@keyframes shake {
    0% { transform: rotate(-2deg); }
    100% { transform: rotate(2deg); }
}

.seminar-date {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 24px;
    opacity: 0.95;
}

.hero-title {
    font-size: 48px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero-title .highlight {
    background: linear-gradient(90deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-cta {
    margin-top: 40px;
}

.cta-note {
    margin-top: 16px;
    font-size: 14px;
    opacity: 0.8;
}

/* Alert Banner */
.alert-banner {
    background: #fef2f2;
    border-top: 4px solid var(--primary-color);
    border-bottom: 4px solid var(--primary-color);
    padding: 32px 0;
}

.alert-content {
    display: flex;
    align-items: center;
    gap: 24px;
    text-align: center;
    justify-content: center;
}

.alert-icon {
    font-size: 48px;
    animation: blink 1.5s infinite;
}

@keyframes blink {
    0%, 50%, 100% { opacity: 1; }
    25%, 75% { opacity: 0.5; }
}

.alert-text {
    font-size: 18px;
    line-height: 1.8;
}

.alert-text strong {
    color: var(--primary-color);
    font-weight: 900;
}

.alert-highlight {
    display: inline-block;
    background: var(--primary-color);
    color: #fff;
    padding: 4px 12px;
    border-radius: 4px;
    font-weight: 700;
    margin-top: 8px;
}

/* Section Styles */
.section {
    padding: 80px 0;
}

.section-title {
    font-size: 40px;
    font-weight: 900;
    text-align: center;
    margin-bottom: 24px;
    line-height: 1.3;
}

.section-description {
    text-align: center;
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 56px;
    line-height: 1.8;
}

.highlight-red {
    color: var(--primary-color);
}

.highlight-blue {
    color: var(--secondary-color);
}

.divider {
    width: 100px;
    height: 4px;
    background: var(--primary-color);
    margin: 48px auto;
}

/* Problem Section */
.problem-section {
    background: var(--light-bg);
}

.solution-title {
    margin-top: 40px;
}

/* Overview Section */
.overview-section {
    background: #fff;
}

.section-header {
    margin-bottom: 56px;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.content-card {
    background: #fff;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.content-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.content-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.content-card:hover::before {
    transform: scaleX(1);
}

.card-number {
    display: inline-block;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: #fff;
    font-size: 20px;
    font-weight: 900;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.card-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
}

.card-text {
    color: var(--text-light);
    line-height: 1.7;
}

/* Speakers Section */
.speakers-section {
    background: var(--light-bg);
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.speaker-card {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.speaker-photo {
    width: 150px;
    height: 150px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--primary-color);
    position: relative;
}

.speaker-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* 各登壇者の写真を個別にトリミング */
.speaker-img-fusumae {
    object-position: center center;
    transform: scale(1.0);
}

.speaker-img-nakajima {
    object-position: center center;
    transform: scale(1.0);
}

.speaker-img-tanabe {
    object-position: center center;
    transform: scale(1.0);
}

.speaker-icon {
    font-size: 80px;
    margin-bottom: 20px;
}

.speaker-name {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.speaker-company {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 16px;
}

.speaker-description {
    color: var(--text-light);
    line-height: 1.7;
}

/* Details Section */
.details-section {
    background: #fff;
}

.details-table {
    max-width: 700px;
    margin: 0 auto;
    background: var(--light-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.detail-row {
    display: grid;
    grid-template-columns: 150px 1fr;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.3s ease;
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-row:hover {
    background: #fff;
}

.detail-label {
    padding: 24px;
    font-weight: 700;
    background: rgba(0, 0, 0, 0.02);
    border-right: 1px solid var(--border-color);
}

.detail-value {
    padding: 24px;
    font-size: 16px;
}

.free-badge {
    display: inline-block;
    background: var(--success-color);
    color: #fff;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 18px;
}

/* Why Section */
.why-section {
    background: var(--light-bg);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.why-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.why-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.why-icon {
    font-size: 24px;
    color: var(--success-color);
    font-weight: 900;
    flex-shrink: 0;
}

.why-item p {
    font-weight: 500;
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: #fff;
}

.cta-box {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 36px;
    font-weight: 900;
    line-height: 1.4;
    margin-bottom: 40px;
}

.cta-content {
    margin-bottom: 48px;
}

.cta-text {
    font-size: 20px;
    margin-bottom: 16px;
    font-weight: 600;
}

.cta-list {
    list-style: none;
    font-size: 22px;
    margin: 24px 0;
    text-align: left;
    max-width: 500px;
    margin: 24px auto;
}

.cta-list li {
    padding: 12px 0;
    font-weight: 700;
}

.cta-button-wrapper {
    margin-top: 40px;
}

/* Form Section */
.form-section {
    background: var(--light-bg);
}

.form-description {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 40px;
    font-size: 16px;
}

.form-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.google-form {
    border: none;
    width: 100%;
    min-height: 1200px;
}

/* Footer */
.footer {
    background: var(--dark-bg);
    color: #fff;
    padding: 48px 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

.footer-logo .logo-img-footer {
    height: 28px;
    filter: brightness(0) invert(1);
}

.footer-logo .logo-text {
    color: #fff;
}

.footer-info p {
    margin: 8px 0;
}

.footer-copyright {
    opacity: 0.6;
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-link {
    color: #fff;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-link:hover {
    opacity: 1;
}

/* Floating CTA */
.floating-cta {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    opacity: 0;
    transform: translateY(100px);
    transition: all 0.3s ease;
}

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

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Responsive Design */
@media (max-width: 768px) {
    .logo-img {
        height: 26px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .section-title {
        font-size: 28px;
    }

    .alert-content {
        flex-direction: column;
    }

    .alert-text {
        font-size: 16px;
    }

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

    .detail-row {
        grid-template-columns: 1fr;
    }

    .detail-label {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

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

    .cta-title {
        font-size: 24px;
    }

    .cta-list {
        font-size: 18px;
    }

    .btn-large {
        padding: 14px 32px;
        font-size: 16px;
    }

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

    .floating-cta {
        bottom: 16px;
        right: 16px;
        left: 16px;
    }

    .btn-floating {
        width: 100%;
        padding: 14px 24px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 60px 0 80px;
    }

    .section {
        padding: 60px 0;
    }

    .hero-title {
        font-size: 26px;
    }

    .section-title {
        font-size: 24px;
    }
}