/* WhereShot - モダン撮影時刻・場所解析ツール スタイルシート */
/* Created by IPUSIRON - セキュリティ重視のOSINTツール */

/* ========== リセット & ベース ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* モダンカラーパレット */
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #06d6a0;
    --accent-warm: #f59e0b;
    --danger: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
    --info: #06b6d4;
    
    /* 背景グラデーション */
    --bg-gradient: linear-gradient(135deg, #0f0f23 0%, #1a1a3e 25%, #2d1b69 50%, #1a1a3e 75%, #0f0f23 100%);
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --bg-glass: rgba(255, 255, 255, 0.1);
    --bg-input: rgba(255, 255, 255, 0.05);
    
    /* テキスト */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-accent: #a78bfa;
    
    /* ボーダー */
    --border: rgba(255, 255, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.15);
    
    /* シャドウ & ブラー */
    --shadow-glass: 0 8px 32px rgba(31, 38, 135, 0.37);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    --blur: blur(8px);
    
    /* アニメーション */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease-out;
    
    /* フォント */
    --font-sans: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========== アニメーション キーフレーム ========== */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(99, 102, 241, 0.3); }
    50% { box-shadow: 0 0 40px rgba(99, 102, 241, 0.6); }
}

/* 地図初期化用のアニメーション */
@keyframes mapLoading {
    0% { opacity: 0.6; }
    50% { opacity: 0.8; }
    100% { opacity: 0.6; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ========== レイアウト ========== */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

.app-container::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(6, 214, 160, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

.main-content {
    flex: 1;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    animation: slideUp 0.8s ease-out;
}

/* ========== ヘッダー ========== */
.app-header {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 0;
    box-shadow: var(--shadow-glass);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.app-title {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.title-main {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(99, 102, 241, 0.3);
    animation: glow 3s ease-in-out infinite;
}

.title-sub {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.05em;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

/* ========== モダンボタン ========== */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

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

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 100%);
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    backdrop-filter: var(--blur);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-external {
    background: linear-gradient(135deg, var(--info) 0%, #0891b2 100%);
    color: white;
    font-size: 0.8rem;
    padding: 0.5rem 1rem;
    border-radius: 0.75rem;
}

.btn-link {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    border-radius: 0.75rem;
}

.btn-link:hover {
    background: var(--primary);
    color: white;
}

/* ========== ファイルアップロード（グラスモルフィズム） ========== */
.upload-section {
    margin-bottom: 3rem;
}

.drop-zone {
    border: 2px dashed var(--border-light);
    border-radius: 2rem;
    padding: 4rem 2rem;
    text-align: center;
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.drop-zone::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary), var(--secondary), var(--accent));
    border-radius: 2rem;
    opacity: 0;
    z-index: -1;
    transition: opacity 0.3s;
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--primary);
    background: var(--bg-card-hover);
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

.drop-zone:hover::before,
.drop-zone.drag-over::before {
    opacity: 1;
}

.drop-zone-content h3 {
    margin: 1rem 0 1rem;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.5rem;
}

.drop-zone-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.drop-zone-content small {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: float 3s ease-in-out infinite;
}

/* ========== 画像プレビューエリア ========== */
.image-preview {
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border-radius: 2rem;
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: var(--shadow-glass);
    border: 1px solid var(--border);
    animation: slideUp 0.5s ease-out;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.preview-header h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.preview-controls {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.preview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.file-info {
    background: var(--bg-card);
    border-radius: 1.5rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.file-basic-info p {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.4;
}

.file-basic-info span {
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-weight: 500;
}

.image-display {
    background: var(--bg-card);
    border-radius: 1.5rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
    text-align: center;
}

.image-display img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    object-fit: contain;
}

.image-display img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

.privacy-notice {
    margin-top: 1rem;
    padding: 0.75rem;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 0.5rem;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.privacy-notice small {
    color: var(--success);
    font-size: 0.8rem;
    line-height: 1.3;
}

/* ========== アップロード完了状態 ========== */
.drop-zone.uploaded {
    padding: 2rem;
    background: var(--bg-card);
    border-color: var(--success);
}

.drop-zone.uploaded .drop-zone-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-align: left;
}

.drop-zone.uploaded .upload-icon {
    font-size: 2rem;
    animation: none;
    margin-bottom: 0;
}

.drop-zone.uploaded h3 {
    font-size: 1.2rem;
    margin: 0;
    color: var(--success);
}

.drop-zone.uploaded p,
.drop-zone.uploaded small {
    margin: 0;
    font-size: 0.9rem;
}

/* ========== カード（グラスモルフィズム） ========== */
.info-panel, .map-panel, .sun-panel, .external-panel {
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border-radius: 2rem;
    padding: 2rem;
    box-shadow: var(--shadow-glass);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.info-panel::before, .map-panel::before, .sun-panel::before, .external-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.5;
}

.info-panel:hover, .map-panel:hover, .sun-panel:hover, .external-panel:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-light);
}

.info-panel h2, .map-panel h2, .sun-panel h2, .external-panel h2 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* ========== 解析結果 ========== */
.analysis-results {
    display: grid;
    gap: 2rem;
    animation: slideUp 0.8s ease-out;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.info-card {
    background: var(--bg-card);
    backdrop-filter: var(--blur);
    border-radius: 1.5rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s;
}

.info-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    background: var(--bg-card-hover);
}

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

.info-card h4 {
    color: var(--text-accent);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

.info-content {
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    line-height: 1.5;
    word-break: break-all;
}

/* ========== 推定日時セクション ========== */
.datetime-estimation-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.datetime-estimation-section h3 {
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.estimation-result {
    display: grid;
    gap: 1.5rem;
}

.estimated-datetime {
    background: var(--bg-card);
    backdrop-filter: var(--blur);
    border-radius: 1.5rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.estimated-datetime:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: var(--bg-card-hover);
}

.estimation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.estimation-header h4 {
    color: var(--text-accent);
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.estimation-value {
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.estimation-confidence {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.estimation-confidence.high {
    color: var(--success);
}

.estimation-confidence.medium {
    color: var(--warning);
}

.estimation-confidence.low {
    color: var(--danger);
}

/* 警告メッセージ */
.estimation-warnings {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 1rem;
    border-left: 4px solid var(--warning);
}

.warning-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    padding: 0.5rem;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    line-height: 1.4;
}

.warning-item:last-child {
    margin-bottom: 0;
}

.warning-item.error {
    background: rgba(239, 68, 68, 0.1);
    border-left: 3px solid var(--danger);
    color: var(--danger);
}

.warning-item.warning {
    background: rgba(245, 158, 11, 0.1);
    border-left: 3px solid var(--warning);
    color: var(--warning);
}

.warning-item.info {
    background: rgba(6, 182, 212, 0.1);
    border-left: 3px solid var(--info);
    color: var(--info);
}

.warning-icon {
    font-size: 1rem;
    margin-top: 0.1rem;
}

/* ソースリスト */
.estimation-sources {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 1rem;
    border: 1px solid var(--border);
}

.estimation-sources h5 {
    color: var(--text-accent);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sources-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.source-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--bg-input);
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    transition: var(--transition-fast);
    flex-wrap: wrap;
    gap: 0.5rem;
}

.source-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
}

.source-type {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
    flex: 1;
    min-width: 150px;
}

.source-datetime {
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    flex: 2;
    min-width: 200px;
}

.source-reliability {
    color: var(--text-accent);
    font-weight: 600;
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    background: var(--bg-glass);
    border-radius: 0.5rem;
    border: 1px solid var(--border);
}

/* 信頼度による色分け */
.source-reliability.high {
    color: var(--success);
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.source-reliability.medium {
    color: var(--warning);
    border-color: var(--warning);
    background: rgba(245, 158, 11, 0.1);
}

.source-reliability.low {
    color: var(--danger);
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

/* ========== 地図コントロール（修正版） ========== */
.map-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.form-select, .form-input {
    background: var(--bg-input);
    backdrop-filter: var(--blur);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 0.75rem 1rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    transition: var(--transition);
    outline: none;
}

.form-select:focus, .form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* 地図ラッパー */
.map-wrapper {
    position: relative;
}

/* 地図コンテナ（修正版） */
.map-container {
    width: 100%;
    height: 500px;
    min-height: 400px;
    min-width: 300px;
    border-radius: 1.5rem;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-glass);
    position: relative;
    background: var(--bg-card);
    z-index: 1;
}

/* 地図初期化状態 */
.map-container.map-initializing {
    pointer-events: none;
    opacity: 0.8;
}

.map-container.map-initializing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-card);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: mapLoading 1.5s infinite;
}

.map-container.map-initializing::after {
    content: '🗺️ 地図を読み込み中...';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1001;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    animation: pulse 1.5s infinite;
}

/* 地図準備完了状態 */
.map-container.map-ready {
    pointer-events: all;
    opacity: 1;
    animation: fadeIn 0.5s ease-out;
}

.map-container.map-ready::before,
.map-container.map-ready::after {
    display: none;
}

/* 地図エラー状態 */
.map-container.map-error {
    pointer-events: none;
    background: var(--bg-card);
    border-color: var(--danger);
}

.map-container.map-error::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-card);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-container.map-error::after {
    content: '❌ 地図の読み込みに失敗しました';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1001;
    color: var(--danger);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
}

/* Leaflet固有の調整 */
.leaflet-container {
    background: var(--bg-card) !important;
    font-family: var(--font-sans) !important;
    border-radius: 1.5rem;
}

.leaflet-control-container {
    font-family: var(--font-sans) !important;
}

.leaflet-popup-content-wrapper {
    background: var(--bg-glass) !important;
    backdrop-filter: var(--blur);
    border: 1px solid var(--border);
    border-radius: 1rem !important;
    color: var(--text-primary) !important;
}

.leaflet-popup-tip {
    background: var(--bg-glass) !important;
    border: 1px solid var(--border);
}

/* 地図情報 */
.map-info {
    margin-top: 1rem;
    text-align: center;
}

.map-info small {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

.map-info small:hover {
    color: var(--text-secondary);
}

/* 方向矢印（修正版） */
.direction-arrow {
    color: var(--danger) !important;
    font-size: 1.2rem !important;
    font-weight: bold !important;
    text-shadow: 0 0 10px rgba(239, 68, 68, 0.5) !important;
    transform-origin: center !important;
    z-index: 1000 !important;
}

/* 位置ポップアップ */
.location-popup {
    min-width: 200px;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.location-popup h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    color: var(--text-primary);
}

.location-popup p {
    margin: 0.25rem 0;
    line-height: 1.4;
    color: var(--text-secondary);
}

.popup-actions {
    margin-top: 0.75rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
}

.popup-actions .btn {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
}

/* ========== 太陽位置計算 ========== */
.sun-controls {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.sun-controls label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
}

.sun-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.sun-info-card {
    background: var(--bg-card);
    backdrop-filter: var(--blur);
    border-radius: 1.5rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.sun-info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-warm), var(--accent));
    transform: scaleX(0);
    transition: transform 0.3s;
}

.sun-info-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.sun-info-card h4 {
    color: var(--text-accent);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.sun-value {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

/* ========== 外部データ連携 ========== */
.external-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.link-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 1.5rem;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.link-group:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.link-group h4 {
    color: var(--text-accent);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

/* ========== モーダル ========== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: var(--blur);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    animation: slideUp 0.3s ease-out;
}

.modal-content {
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    border-radius: 2rem;
    padding: 3rem;
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-xl);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition-fast);
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-card);
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--danger);
    transform: scale(1.1);
}

.help-content h3 {
    color: var(--primary);
    margin: 2rem 0 1rem;
    font-weight: 700;
}

.help-content h3:first-child {
    margin-top: 0;
}

.help-content ol, .help-content ul {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.help-content li {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========== フッター区切り線 ========== */
.footer-divider {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-light), transparent);
    margin: 3rem auto 0;
    max-width: 60%;
    opacity: 0.6;
}

/* ========== フッター ========== */
.app-footer {
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    margin-top: 2rem;
}

.footer {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center !important;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer a {
    color: #007bff;
    transition: var(--transition-fast);
}

.footer a:hover {
    color: var(--primary);
    text-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

/* ========== レスポンシブ ========== */
@media (max-width: 768px) {
    .main-content {
        padding: 1rem;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
        padding: 0 1rem;
    }
    
    .title-main {
        font-size: 2rem;
    }
    
    .drop-zone {
        padding: 3rem 1.5rem;
        margin: 0 1rem;
    }
    
    .info-panel, .map-panel, .sun-panel, .external-panel {
        padding: 1.5rem;
        margin: 0 1rem;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .sun-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .map-controls {
        flex-direction: column;
    }
    
    .map-container {
        height: 400px;
        min-height: 350px;
    }
    
    .external-links {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        padding: 2rem;
        margin: 1rem;
    }

    .estimation-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .source-item {
        flex-direction: column;
        align-items: stretch;
        text-align: left;
    }
    
    .source-type,
    .source-datetime,
    .source-reliability {
        min-width: auto;
        flex: none;
    }
    
    .source-reliability {
        align-self: flex-start;
        margin-top: 0.5rem;
    }

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

@media (max-width: 480px) {
    .title-main {
        font-size: 1.75rem;
    }
    
    .drop-zone {
        padding: 2rem 1rem;
    }
    
    .upload-icon {
        font-size: 3rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.8rem;
    }
    
    .map-container {
        height: 350px;
        min-height: 300px;
    }
}

/* ========== スクロールバー ========== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-card);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
}

/* ========== フォーカス状態 ========== */
.btn:focus,
.form-input:focus,
.form-select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

/* ========== ユーティリティクラス ========== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none !important; }
.visible { display: block !important; }

/* ========== 成功・エラーメッセージのスタイル強化 ========== */
.success-message, .error-message {
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border-radius: 1rem;
    border: 1px solid var(--border);
    animation: slideUp 0.3s ease-out;
}

/* プログレスバー風のローディング効果 */
.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--primary));
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}