:root {
    --bg-dark: #07080e;
    --card-bg: rgba(18, 20, 32, 0.65);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-blue: #38bdf8;
    --accent-purple: #818cf8;
    --accent-gold: #fbbf24;
    --status-red: #f43f5e;
    --glow-color-1: rgba(56, 189, 248, 0.15);
    --glow-color-2: rgba(129, 140, 248, 0.15);
    --glow-color-3: rgba(244, 63, 94, 0.1);
}

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

body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
    line-height: 1.6;
    padding: 24px;
}

/* 背景エフェクト */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    animation: floatOrb 20s infinite ease-in-out alternate;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--glow-color-1);
    top: -10%;
    left: -10%;
}

.orb-2 {
    width: 450px;
    height: 450px;
    background: var(--glow-color-2);
    bottom: -10%;
    right: -10%;
    animation-delay: -7s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: var(--glow-color-3);
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes floatOrb {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(40px, 30px) scale(1.1); }
    100% { transform: translate(-30px, 50px) scale(0.95); }
}

/* メインコンテナ・カード */
.container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 680px;
}

.main-card {
    background: var(--card-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--card-border);
    border-radius: 28px;
    padding: 48px 44px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 
                0 0 0 1px rgba(255, 255, 255, 0.05);
    animation: cardAppear 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes cardAppear {
    0% { opacity: 0; transform: translateY(24px) scale(0.98); }
    100% { opacity: 1; transform: translateY(0) scale(1); }
}

/* ヘッダー・バッジ */
.card-header {
    display: flex;
    justify-content: center;
    margin-bottom: 32px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(244, 63, 94, 0.12);
    border: 1px solid rgba(244, 63, 94, 0.3);
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: #fda4af;
    box-shadow: 0 0 15px rgba(244, 63, 94, 0.15);
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--status-red);
    border-radius: 50%;
    position: relative;
}

.status-dot::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background-color: var(--status-red);
    border-radius: 50%;
    animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(2.4); opacity: 0; }
}

/* メッセージセクション */
.message-section {
    text-align: center;
}

.owner-tag {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: 600;
}

.main-title {
    font-family: 'Outfit', 'Noto Sans JP', sans-serif;
    font-size: 1.85rem;
    font-weight: 800;
    line-height: 1.4;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.highlight-name {
    background: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    filter: drop-shadow(0 2px 12px rgba(129, 140, 248, 0.25));
}

.status-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* 区切り線 */
.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    border: none;
    margin: 36px 0;
}

/* 広告・PRセクション */
.promo-section {
    text-align: left;
}

.promo-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.promo-badge {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 6px;
    letter-spacing: 0.05em;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.promo-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.promo-card {
    position: relative;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 24px;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

.promo-card-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.06),
        transparent
    );
    transform: skewX(-20deg);
    transition: left 0.7s ease;
}

.promo-card:hover .promo-card-glow {
    left: 150%;
}

.promo-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(56, 189, 248, 0.4);
    box-shadow: 0 12px 30px -10px rgba(56, 189, 248, 0.2);
}

.promo-icon-wrapper {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(129, 140, 248, 0.2));
    border: 1px solid rgba(56, 189, 248, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #38bdf8;
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.15);
}

.promo-icon {
    width: 24px;
    height: 24px;
}

.promo-content {
    flex-grow: 1;
}

.promo-title-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
}

.promo-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
    line-height: 1.35;
    transition: color 0.2s;
}

.promo-card:hover .promo-title {
    color: var(--accent-blue);
}

.promo-arrow {
    font-size: 1.1rem;
    color: var(--text-muted);
    transition: transform 0.2s, color 0.2s;
}

.promo-card:hover .promo-arrow {
    transform: translate(3px, -3px);
    color: var(--accent-blue);
}

.promo-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 12px;
}

.promo-url {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-family: monospace;
    color: #38bdf8;
    background: rgba(56, 189, 248, 0.1);
    padding: 4px 10px;
    border-radius: 6px;
}

/* フッター・関連リンク */
.card-footer {
    text-align: center;
}

.footer-links {
    margin-bottom: 24px;
}

.footer-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.footer-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* レスポンシブ調整 */
@media (max-width: 600px) {
    .main-card {
        padding: 36px 24px;
    }

    .main-title {
        font-size: 1.5rem;
    }

    .promo-card {
        flex-direction: column;
        gap: 16px;
    }
}