@charset "UTF-8";

/* --- 基本設定 (Variables) --- */
:root {
    /* Colors */
    --color-primary: #7e22ce;       /* メインカラー（洗練された紫） */
    --color-primary-hover: #6b21a8; /* ホバー時の濃い紫 */
    --color-primary-light: #f3e8ff; /* 薄い紫（背景など） */
    --color-secondary: #64748b;     /* サブカラー（落ち着いたグレー青） */
    --color-success: #22c55e;       /* 成功色（緑） */
    --color-danger: #ef4444;        /* エラー・削除色（赤） */
    --color-warning: #f59e0b;       /* 警告色（オレンジ） */

    --color-bg-main: #f8fafc;       /* 全体の背景色（非常に薄いグレー青） */
    --color-bg-white: #ffffff;      /* コンテンツ背景色（白） */
    --color-text-main: #1e293b;     /* メインテキスト色（濃いグレー） */
    --color-text-muted: #64748b;    /* 薄いテキスト色 */
    --color-border: #e2e8f0;        /* 枠線色 */

    /* Typography */
    --font-family-base: 'Helvetica Neue', Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    --font-size-base: 16px;

    /* Spacing & Layout */
    --header-height: 70px;
    --footer-height: 60px; /* 追加 */
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* --- リセット & ベーススタイル --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-main);
    background-color: var(--color-bg-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--color-primary-hover);
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: bottom;
}

/* --- レイアウト --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    flex: 1; /* フッターを下に押しやる */
}

/* --- ヘッダー --- */
.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
}

.site-branding {
    display: flex;
    align-items: center;
}

.site-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-main);
    letter-spacing: -0.025em;
}
.site-title a {
    color: inherit;
}

/* パンくずリスト風タイトル */
.breadcrumb-title {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 8px;
}
.breadcrumb-separator {
    color: var(--color-text-muted);
    font-weight: normal;
    font-size: 1.2rem;
}
.breadcrumb-current {
    color: var(--color-primary);
}

.header-nav {
    display: flex;
    gap: 12px;
}

/* --- フッター (新規追加) --- */
.site-footer {
    background-color: var(--color-bg-white);
    color: var(--color-text-muted);
    text-align: center;
    padding: 20px;
    font-size: 0.875rem;
    border-top: 1px solid var(--color-border);
    margin-top: 40px;
}

/* --- ボタン --- */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--border-radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    white-space: nowrap;
}
.button:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}
.button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
.button svg {
    width: 1.2em;
    height: 1.2em;
}

/* ボタンバリエーション */
.button-primary {
    background-color: var(--color-primary);
    color: #fff;
}
.button-primary:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.button-secondary {
    background-color: var(--color-bg-white);
    color: var(--color-text-main);
    border-color: var(--color-border);
}
.button-secondary:hover:not(:disabled) {
    background-color: var(--color-bg-main);
    border-color: var(--color-secondary);
}

.button-outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.button-outline:hover:not(:disabled) {
    background-color: var(--color-primary-light);
}

.button-danger {
    background-color: var(--color-danger);
    color: #fff;
}
.button-danger:hover:not(:disabled) {
    background-color: #dc2626; /* より濃い赤 */
    box-shadow: var(--shadow-md);
}
.button-text-danger {
    color: var(--color-danger);
    background: transparent;
    padding: 8px 12px;
}
.button-text-danger:hover {
    background-color: #fee2e2; /* 薄い赤背景 */
}
/* 小さいアイコンボタン用 */
.button-icon-sm {
    padding: 8px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: var(--color-text-muted);
    background-color: transparent;
}
.button-icon-sm:hover {
    background-color: var(--color-bg-main);
    color: var(--color-text-main);
}
.button-icon-sm.danger:hover {
    background-color: #fee2e2;
    color: var(--color-danger);
}

/* --- フォーム --- */
.form-group {
    margin-bottom: 1.5rem;
}
.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text-main);
}
.form-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-md);
    transition: border-color 0.2s, box-shadow 0.2s;
    background-color: var(--color-bg-white);
}
.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* --- カード (アルバム一覧など) --- */
.album-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.album-card {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid var(--color-border);
    position: relative; /* 削除ボタン配置用 */
}

.album-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-light);
}

/* アルバム削除ボタン */
.album-delete-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 10;
    background-color: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0; /* デフォルトは非表示 */
    transition: all 0.2s;
}
.album-card:hover .album-delete-btn {
    opacity: 1; /* ホバー時に表示 */
}
.album-delete-btn:hover {
    background-color: var(--color-danger);
    color: #fff;
    border-color: var(--color-danger);
}

.album-link {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    color: inherit;
}

.album-thumbnail {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-color: var(--color-bg-main);
    position: relative;
}

.album-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.album-card:hover .album-thumbnail img {
    transform: scale(1.08);
}

.album-info {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.album-date {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}

.album-title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.4;
    color: var(--color-text-main);
}
.album-card:hover .album-title {
    color: var(--color-primary);
}

/* --- 写真ギャラリー --- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.photo-item {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.photo-item:hover {
    box-shadow: var(--shadow-md);
}

.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.photo-item:hover img {
    transform: scale(1.05);
}

/* 選択モード時のスタイル */
.gallery-container.selection-mode .photo-item {
    cursor: pointer;
}
.gallery-container.selection-mode .photo-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.1); /* 非選択時は少し暗く */
    transition: background-color 0.2s;
}
.gallery-container.selection-mode .photo-item.selected::after {
    background-color: rgba(126, 34, 206, 0.3); /* 選択時は紫のオーバーレイ */
    box-shadow: inset 0 0 0 4px var(--color-primary);
}

.photo-checkbox {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 10;
    width: 24px;
    height: 24px;
    opacity: 0; /* 実際のチェックボックスは隠す */
    pointer-events: none; /* クリックは親要素で拾う */
}

/* カスタムチェックマーク */
.photo-check-indicator {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 5;
    width: 28px;
    height: 28px;
    background-color: rgba(255, 255, 255, 0.8);
    border: 2px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    opacity: 0;
    transform: scale(0.8);
}
.gallery-container.selection-mode .photo-check-indicator {
    opacity: 1;
    transform: scale(1);
}
.photo-item.selected .photo-check-indicator {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}
.photo-check-indicator svg {
    width: 16px;
    height: 16px;
    stroke-width: 3;
}

/* --- ツールバー --- */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
    padding: 16px;
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}
.toolbar-group {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* --- モーダル (共通) --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}
.modal-overlay.active .modal-container {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border);
}
.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
}
.modal-close {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s;
}
.modal-close:hover {
    background-color: var(--color-bg-main);
    color: var(--color-text-main);
}
.modal-body {
    padding: 24px;
}

/* --- アップロードモーダル専用 --- */
.upload-area {
    border: 3px dashed var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background-color: var(--color-bg-main);
}
.upload-area:hover, .upload-area.dragover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}
.upload-icon {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: 16px;
    opacity: 0.7;
}

/* 進捗バー */
.progress-container {
    margin-top: 20px;
}
.progress-bar {
    height: 8px;
    background-color: var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}
.progress-value {
    height: 100%;
    background-color: var(--color-success);
    width: 0%;
    transition: width 0.3s ease;
}
.progress-status {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* --- ライトボックス --- */
.lightbox-overlay {
    background-color: rgba(0, 0, 0, 0.95);
}
.lightbox-container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.lightbox-image-wrapper {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 80vh;
    position: relative;
}
.lightbox-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    user-select: none; /* スワイプ時の誤選択防止 */
}
.lightbox-controls {
    display: flex;
    gap: 20px;
    padding: 20px;
    width: 100%;
    justify-content: center;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    position: absolute;
    bottom: 0;
    left: 0;
}
.lightbox-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: none;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s;
    z-index: 10;
}
.lightbox-nav-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
}
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }
.lightbox-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(0,0,0,0.3);
    color: #fff;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 20;
}

/* --- ログイン画面 --- */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg-main) 100%);
}
.login-box {
    background-color: var(--color-bg-white);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 400px;
    text-align: center;
}
.login-logo {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 10px;
}

/* --- メッセージ表示 --- */
.alert {
    padding: 16px;
    border-radius: var(--border-radius-md);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}
.alert-danger {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}
.alert-success {
    background-color: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

/* --- ユーティリティ --- */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-4 { margin-top: 1rem; }

/* --- レスポンシブ調整 --- */
@media (max-width: 768px) {
    .site-header {
        padding: 15px 20px;
    }
    .site-title {
        font-size: 1.3rem;
    }
    .header-nav .button-text {
        display: none; /* スマホではボタンテキストを隠してアイコンのみにする等の調整も可 */
    }
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    .toolbar-group {
        justify-content: space-between;
    }
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr); /* スマホでは3列表示 */
        gap: 8px;
    }
    .lightbox-nav-btn {
        display: none; /* スマホではスワイプ前提で矢印ボタンを隠す（邪魔になるため） */
    }
    
    /* スマホではアルバム削除ボタンを常時表示（ホバーがないため） */
    .album-delete-btn {
        opacity: 1;
        background-color: rgba(255, 255, 255, 0.95);
        box-shadow: var(--shadow-sm);
    }
}