/* ========================================
   ランディングページ
   ======================================== */

/* ナビゲーション */
.landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.landing-nav.scrolled {
    background: rgba(0, 0, 0, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.logo-main {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.5px;
}

.logo-badge {
    font-size: 0.7rem;
    font-weight: 600;
    color: #fff;
    background: var(--color-primary);
    padding: 2px 8px;
    border-radius: 12px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: #fff;
}

.nav-cta {
    display: inline-block;
    padding: 8px 20px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background 0.2s, transform 0.2s;
}

.nav-cta:hover {
    background: var(--color-primary-600);
    transform: translateY(-1px);
}

.nav-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    transition: transform 0.3s, opacity 0.3s;
}

.nav-menu-btn.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-menu-btn.open span:nth-child(2) {
    opacity: 0;
}

.nav-menu-btn.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.98);
    padding: 80px 24px 24px;
    flex-direction: column;
    gap: 8px;
    z-index: 98;
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 1rem;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu-cta {
    display: block;
    padding: 12px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    margin-top: 8px;
}

/* 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, #000000 0%, #1a1a2e 50%, #16213e 100%);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(59, 130, 246, 0.15);
}

.hero-circle-1 {
    width: 500px;
    height: 500px;
    top: -150px;
    right: -150px;
    animation: float 20s ease-in-out infinite;
}

.hero-circle-2 {
    width: 700px;
    height: 700px;
    bottom: -250px;
    left: -200px;
    animation: float 25s ease-in-out infinite reverse;
}

.hero-circle-3 {
    width: 300px;
    height: 300px;
    top: 40%;
    left: 10%;
    border-color: rgba(59, 130, 246, 0.08);
    animation: float 18s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(10px, -15px); }
    50% { transform: translate(-5px, 10px); }
    75% { transform: translate(8px, 5px); }
}

.hero-inner {
    position: relative;
    z-index: 1;
    max-width: 700px;
    padding: 120px 24px 80px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-accent {
    background: linear-gradient(135deg, var(--color-primary) 0%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.8;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.btn-primary-lg {
    display: inline-block;
    padding: 14px 36px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 10px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}

.btn-primary-lg:hover {
    background: var(--color-primary-600);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.35);
}

.btn-secondary-lg {
    display: inline-block;
    padding: 14px 36px;
    background: transparent;
    color: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 10px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.btn-secondary-lg:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
}

.hero-note {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

/* セクション共通 */
.section-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-gray-900);
    text-align: center;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--color-gray-500);
    text-align: center;
    margin-bottom: 48px;
}

/* 機能セクション */
.features {
    padding: 100px 0;
    background: var(--color-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.feature-card {
    padding: 36px;
    background: var(--color-gray-50);
    border-radius: 16px;
    border: 1px solid var(--color-gray-100);
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary) 0%, #60a5fa 100%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 10px;
}

.feature-desc {
    font-size: 0.95rem;
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* 料金セクション */
.pricing {
    padding: 100px 0;
    background: var(--color-gray-50);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.pricing-card {
    background: var(--color-white);
    border-radius: 16px;
    padding: 36px;
    border: 1px solid var(--color-gray-200);
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.pricing-card-popular {
    border-color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.15);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: #fff;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--color-gray-100);
}

.pricing-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 12px;
}

.price-amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-gray-900);
}

.price-unit {
    font-size: 1rem;
    color: var(--color-gray-500);
}

.price-coming {
    font-size: 1.2rem;
    color: var(--color-gray-400);
    font-weight: 500;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 32px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.pricing-features li {
    font-size: 0.95rem;
    color: var(--color-gray-700);
    padding-left: 28px;
    position: relative;
}

.pricing-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 5px;
    width: 16px;
    height: 16px;
    background: var(--color-success);
    border-radius: 50%;
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
}

.pricing-btn {
    display: block;
    width: 100%;
    padding: 12px;
    text-align: center;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    background: var(--color-primary);
    color: #fff;
    transition: background 0.2s, transform 0.2s;
}

.pricing-btn:hover {
    background: var(--color-primary-600);
    transform: translateY(-1px);
}

.pricing-btn-disabled {
    background: var(--color-gray-200);
    color: var(--color-gray-500);
    cursor: default;
}

.pricing-btn-disabled:hover {
    background: var(--color-gray-200);
    transform: none;
}

/* CTAセクション */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, #000000 0%, #1a1a2e 100%);
    text-align: center;
}

.cta-title {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

.cta-desc {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 36px;
}

/* フッター */
.landing-footer {
    background: #000;
    padding: 40px 0;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-logo {
    font-size: 1rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.8);
}

.footer-copy {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.35);
    margin-top: 6px;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: rgba(255, 255, 255, 0.8);
}

/* レスポンシブ - タブレット */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .nav-menu-btn {
        display: flex;
    }

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

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

    .hero-description br {
        display: none;
    }

    .hero-inner {
        padding: 100px 20px 60px;
    }

    .features {
        padding: 64px 0;
    }

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

    .pricing {
        padding: 64px 0;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .cta {
        padding: 64px 0;
    }

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

    .footer-inner {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

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

    .section-subtitle {
        font-size: 0.95rem;
        margin-bottom: 32px;
    }
}

/* レスポンシブ - スマートフォン */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.7rem;
    }

    .hero-inner {
        padding: 88px 16px 48px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-primary-lg,
    .btn-secondary-lg {
        width: 100%;
        text-align: center;
        padding: 14px 24px;
    }

    .features {
        padding: 48px 0;
    }

    .feature-card {
        padding: 24px;
    }

    .pricing {
        padding: 48px 0;
    }

    .pricing-grid {
        max-width: none;
    }

    .pricing-card {
        padding: 28px 20px;
    }

    .price-amount {
        font-size: 2.5rem;
    }

    .cta {
        padding: 48px 0;
    }

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

    .cta-desc {
        font-size: 0.95rem;
    }

    .section-inner {
        padding: 0 16px;
    }

    .landing-footer {
        padding: 32px 0;
    }
}

/* レスポンシブ - 極小画面 */
@media (max-width: 360px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .hero-description {
        font-size: 0.9rem;
    }

    .hero-note {
        font-size: 0.75rem;
    }

    .nav-inner {
        padding: 12px 16px;
    }

    .logo-main {
        font-size: 1.1rem;
    }

    .feature-card {
        padding: 20px;
    }

    .feature-title {
        font-size: 1.05rem;
    }

    .feature-desc {
        font-size: 0.875rem;
    }

    .pricing-card {
        padding: 24px 16px;
    }

    .price-amount {
        font-size: 2.2rem;
    }

    .pricing-features li {
        font-size: 0.875rem;
    }
}