/* =============================================
   ランディングページ専用スタイルシート (landing.css)
   ============================================= */

:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: rgba(26, 34, 53, 0.6);
    --bg-card-hover: rgba(31, 42, 64, 0.8);

    --text-primary: #e8ecf1;
    --text-secondary: #8892a4;
    --text-muted: #4a5568;

    --accent: #00d4ff;
    --accent-glow: rgba(0, 212, 255, 0.4);
    --accent-hover: #33ddff;

    --green: #00e676;
    --red: #ff5252;

    --border: rgba(255, 255, 255, 0.08);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Outfit', 'Inter', sans-serif;

    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    background-image:
        radial-gradient(circle at 15% 50%, rgba(0, 212, 255, 0.08), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(0, 212, 255, 0.05), transparent 25%);
}

/* Typography */
h1,
h2,
h3,
.app-name {
    font-family: var(--font-display);
}

.text-gradient {
    background: linear-gradient(135deg, #fff, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ヘッダー */
.landing-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 14, 23, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 32px;
    width: auto;
    border-radius: 6px;
}

.app-name {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* ボタン共通 */
a {
    text-decoration: none;
}

.btn-primary-small,
.btn-primary-large {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, #00b4d8, #00d4ff);
    color: #000;
    font-weight: 700;
    border-radius: 8px;
    transition: var(--transition);
    box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary-small {
    padding: 10px 20px;
    font-size: 14px;
}

.btn-primary-large {
    padding: 16px 32px;
    font-size: 18px;
    border-radius: 12px;
}

.btn-primary-small:hover,
.btn-primary-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
    background: linear-gradient(135deg, #33c3e5, #33ddff);
}

/* ヒーローセクション */
.hero-section {
    max-width: 1200px;
    margin: 140px auto 80px;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    color: var(--accent);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 64px;
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -1.5px;
}

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
    line-height: 1.8;
}

/* モックアップUI */
.hero-image-wrapper {
    perspective: 1000px;
}

.mockup-window {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.mockup-window:hover {
    transform: rotateY(0) rotateX(0);
}

.mockup-header {
    background: rgba(255, 255, 255, 0.03);
    padding: 12px 16px;
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--border);
}

.mac-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.red {
    background: #ff5f56;
}

.yellow {
    background: #ffbd2e;
}

.green {
    background: #27c93f;
}

.mockup-body {
    padding: 24px;
    background: var(--bg-primary);
}

.mockup-summary {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(0, 212, 255, 0.02));
    border: 1px solid rgba(0, 212, 255, 0.12);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    text-align: center;
}

.mockup-label {
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.mockup-value {
    font-size: 40px;
    font-weight: 800;
    font-family: var(--font-display);
    background: linear-gradient(135deg, #fff, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.mockup-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mockup-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.mockup-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #333;
}

.btc {
    background: linear-gradient(135deg, #f7931a, #bd7114);
}

.eth {
    background: linear-gradient(135deg, #627eea, #3c54a5);
}

.sol {
    background: linear-gradient(135deg, #00ffa3, #03e1ff);
}

.mockup-text {
    flex: 1;
}

.m-title {
    font-weight: 600;
    font-size: 16px;
}

.m-sub {
    color: var(--text-secondary);
    font-size: 13px;
}

.mockup-right {
    font-weight: 700;
    font-size: 15px;
}

.text-green {
    color: var(--green);
}

.text-red {
    color: var(--red);
}


/* 特徴セクション */
.features-section {
    max-width: 1200px;
    margin: 120px auto;
    padding: 0 24px;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.feature-card:hover {
    transform: translateY(-5px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-title {
    font-size: 20px;
    margin-bottom: 12px;
}

.feature-desc {
    color: var(--text-secondary);
    font-size: 15px;
}

/* CTAセクション */
.cta-section {
    padding: 80px 24px;
    text-align: center;
    background: linear-gradient(180deg, transparent, rgba(0, 212, 255, 0.05));
    border-top: 1px solid var(--border);
}

.cta-inner {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: 36px;
    margin-bottom: 16px;
}

.cta-desc {
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 40px;
}

/* フッター */
.landing-footer {
    border-top: 1px solid var(--border);
    padding: 40px 24px;
    background: var(--bg-secondary);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-family: var(--font-display);
}

.logo-img-small {
    height: 24px;
    border-radius: 4px;
}

.copyright {
    color: var(--text-muted);
    font-size: 14px;
}

/* レスポンシブ */
@media (max-width: 992px) {
    .hero-section {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-desc {
        margin: 0 auto 40px;
    }

    .badge {
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 40px;
    }

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

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

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