:root {
    --space-bg: linear-gradient(135deg, #09071b 0%, #1a1645 50%, #12122b 100%);
    --moon-glow: rgba(255, 255, 255, 0.15);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-hover: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.6);
    --accent-blue: #00d2ff;
    --accent-purple: #9d50bb;
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.8);
}

body {
    background: var(--space-bg);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

#starfield {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.fade-in {
    animation: fadeIn 0.8s ease-out forwards;
}

/* Moon Simulator Styles */
.moon-simulator-card {
    background: linear-gradient(145deg, rgba(15, 12, 41, 0.9), rgba(48, 43, 99, 0.4)) !important;
    border: 1px solid rgba(0, 210, 255, 0.2) !important;
    border-radius: 24px;
}

.moon-display-container {
    position: relative;
    display: inline-block;
}

.simulator-moon-img {
    width: 200px;
    height: 200px;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 0 15px rgba(255, 255, 255, 0.2));
    transition: transform 0.1s ease-out;
}

.moon-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, rgba(0, 210, 255, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 1;
}

/* Custom Range Slider */
.custom-moon-range {
    height: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.custom-moon-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--accent-blue);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px var(--accent-blue);
    border: 2px solid white;
}

.custom-moon-range::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--accent-blue);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px var(--accent-blue);
    border: 2px solid white;
}

/* SNS Brand Colors */
.btn-x-share {
    background-color: #000000;
    color: #ffffff;
    border: none;
    transition: transform 0.2s, opacity 0.2s;
}

.btn-x-share:hover {
    color: #ffffff;
    opacity: 0.8;
    transform: translateY(-2px);
}

.btn-line-share {
    background-color: #06c755;
    color: #ffffff;
    border: none;
    transition: transform 0.2s, opacity 0.2s;
}

.btn-line-share:hover {
    color: #ffffff;
    opacity: 0.8;
    transform: translateY(-2px);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Staggered Entrance */
.calendar-day {
    animation: fadeIn 0.6s ease-out both;
}

.calendar-day:nth-child(7n+1) {
    animation-delay: 0.1s;
}

.calendar-day:nth-child(7n+2) {
    animation-delay: 0.15s;
}

.calendar-day:nth-child(7n+3) {
    animation-delay: 0.2s;
}

.calendar-day:nth-child(7n+4) {
    animation-delay: 0.25s;
}

.calendar-day:nth-child(7n+5) {
    animation-delay: 0.3s;
}

.calendar-day:nth-child(7n+6) {
    animation-delay: 0.35s;
}

.calendar-day:nth-child(7n+7) {
    animation-delay: 0.4s;
}

/* Calendar Grid Upgrade */
.calendar-container {
    padding: 2rem 0;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 12px;
}

.calendar-header {
    text-align: center;
    font-weight: 600;
    padding: 1rem 0;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.calendar-day {
    min-height: 120px;
    padding: 1rem;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.calendar-day:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 210, 255, 0.4);
    background: var(--glass-bg-hover);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
    z-index: 10;
}

.day-number {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.day-today {
    border: 2px solid var(--accent-blue) !important;
    box-shadow: 0 0 20px rgba(0, 210, 255, 0.3);
}

.day-today::after {
    content: 'TODAY';
    position: absolute;
    top: 5px;
    right: 8px;
    font-size: 0.6rem;
    color: var(--accent-blue);
    font-weight: 800;
}

.moon-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 5px;
}

/* Moon image styles (returning to stable individual images) */
.moon-display-container {
    padding: 0.5rem;
}

.moon-img-sm {
    width: 48px;
    height: 48px;
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.3));
    object-fit: contain;
}

/* Event Marker */
.event-marker {
    position: absolute;
    bottom: 8px;
    right: 8px;
    color: #ffcc00;
    font-size: 0.9rem;
    animation: eventPulse 2s infinite;
}

@keyframes eventPulse {
    0% {
        transform: scale(1);
        filter: drop-shadow(0 0 2px rgba(255, 204, 0, 0.5));
    }

    50% {
        transform: scale(1.3);
        filter: drop-shadow(0 0 8px rgba(255, 204, 0, 0.8));
    }

    100% {
        transform: scale(1);
        filter: drop-shadow(0 0 2px rgba(255, 204, 0, 0.5));
    }
}

/* Responsive Layout Switch: Grid to List (Canceled for Compact View) */
@media (max-width: 768px) {
    .calendar-grid {
        gap: 4px; /* 極限まで詰める */
    }

    .calendar-header {
        display: block; /* 曜日を表示 */
        padding: 0.5rem 0;
        font-size: 0.6rem;
    }

    .calendar-day {
        min-height: 70px; /* 高さを抑える */
        padding: 4px;
        border-radius: 8px;
    }

    .day-number {
        font-size: 0.8rem;
        margin-bottom: 2px;
        width: auto;
        border: none;
        margin-right: 0;
        text-align: left;
    }

    .moon-info {
        flex-direction: column;
        align-items: center;
        margin-top: 0;
    }

    .moon-img-sm {
        width: 24px;
        height: 24px;
        margin-right: 0;
    }

    .moon-age-text {
        font-size: 0.6rem;
        margin-top: 2px;
    }

    /* モバイルでは月の出などを非表示にする */
    .moon-details .text-secondary {
        display: none !important;
    }

    .day-today::after {
        font-size: 0.5rem;
        top: 2px;
        right: 4px;
    }

    .event-marker {
        font-size: 0.7rem;
        bottom: 4px;
        right: 4px;
    }

    .photo-marker {
        top: 4px !important;
        right: 4px !important;
    }
}

/* Base Card & UI Refinement */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border) !important;
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.card.text-dark {
    color: #212529;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border-color: var(--accent-blue) !important;
}

.card-title {
    color: white !important;
    /* デフォルトは白 */
}

/* 明るい背景（text-dark/bg-light）がある場合は黒くする。
   ただし、明示的に .glass-panel などが指定されている場合は白を優先する */
.text-dark:not(.glass-panel):not(.auth-card) .card-title,
.bg-light:not(.glass-panel):not(.auth-card) .card-title,
.text-dark:not(.glass-panel):not(.auth-card) h3,
.text-dark:not(.glass-panel):not(.auth-card) h5 {
    color: #212529;
}

/* 認証カードおよびダークパネル内のテキスト強制確保 */
.auth-card, .glass-panel-dark, .auth-container {
    color: #ffffff !important;
}

.auth-card p, .auth-card span, .auth-card label,
.glass-panel-dark p, .glass-panel-dark span, .glass-panel-dark li {
    color: rgba(255, 255, 255, 0.9) !important;
}

.auth-card .text-secondary, .glass-panel-dark .text-secondary,
.auth-card .text-muted, .glass-panel-dark .text-muted {
    color: rgba(255, 255, 255, 0.6) !important;
}

.auth-card h1, .auth-card h2, .auth-card h3, .auth-card h4, .auth-card h5,
.glass-panel-dark h1, .glass-panel-dark h2, .glass-panel-dark h3 {
    color: #ffffff !important;
}

.card-text {
    color: var(--text-secondary);
}


.btn-outline-primary {
    color: var(--accent-blue);
    border-color: var(--accent-blue);
}

.btn-outline-primary:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: #000;
}

.badge {
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* Custom Badge Colors for Astro Events */
.badge-lunar-eclipse {
    background-color: #d63031 !important;
    color: #fff !important;
}

/* Blood Moon Red */
.badge-meteor-shower {
    background-color: #fdcb6e !important;
    color: #2d3436 !important;
}

/* Meteor Gold */
.badge-planetary {
    background-color: #0984e3 !important;
    color: #fff !important;
}

/* Planet Blue */
.badge-full-moon {
    background-color: #dfe6e9 !important;
    color: #2d3436 !important;
}

/* Moon Silver */
.badge-rare {
    background-color: #6c5ce7 !important;
    color: #fff !important;
}

/* Rare Purple */

footer {
    background: rgba(15, 12, 41, 0.9) !important;
    border-top: 1px solid var(--glass-border);
    margin-top: 4rem;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #0f0c29;
}

::-webkit-scrollbar-thumb {
    background: #302b63;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #24243e;
}

/* Breadcrumbs */
.breadcrumb-item a {
    color: var(--accent-blue);
    text-decoration: none;
}

.breadcrumb-item.active {
    color: var(--text-secondary);
}

/* Tables */
.table {
    color: var(--text-primary);
}

.table-hover tbody tr:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

/* ハートポップアニメーション */
.heart-pop {
    position: fixed;
    pointer-events: none;
    z-index: 10000;
    font-size: 1.2rem;
    color: #ff4757;
    text-shadow: 0 0 10px rgba(255, 71, 87, 0.5);
    animation: heartPopAnim 0.8s ease-out forwards;
    transform: translate(-50%, -50%);
}

@keyframes heartPopAnim {
    0% {
        transform: translate(-50%, -50%) scale(0.3);
        opacity: 1;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -150px) scale(var(--random-scale, 1.2)) rotate(var(--random-rotate, 30deg));
        opacity: 0;
    }
}