/* CSS 变量定义明暗主题 */
:root {
    --bg-color: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --container-bg: rgba(0, 0, 0, 0.7);
    --text-color: #e0e0e0;
    --shadow-color: rgba(0, 255, 255, 0.3);
    --bookmark-bg: rgba(255, 255, 255, 0.05);
    --input-bg: rgba(255, 255, 255, 0.1);
    --input-text-color: #ffffff;
    --placeholder-color: rgba(255, 255, 255, 0.7);
}

[data-theme="light"] {
    --bg-color: linear-gradient(135deg, #f0f0f0 0%, #e0e0e0 100%);
    --container-bg: rgba(255, 255, 255, 0.9);
    --text-color: #333333;
    --shadow-color: rgba(0, 0, 0, 0.2);
    --bookmark-bg: rgba(0, 0, 0, 0.05);
    --input-bg: rgba(0, 0, 0, 0.1);
    --input-text-color: #333333;
    --placeholder-color: rgba(0, 0, 0, 0.7);
}

/* 全局样式 */
body {
    font-family: 'Orbitron', sans-serif;
    margin: 0;
    padding: 20px;
    background: var(--bg-color);
    color: var(--text-color);
    overflow-x: hidden;
    position: relative;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--container-bg);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 0 20px var(--shadow-color);
    backdrop-filter: blur(5px);
}

/* 修改 header-top 布局 */
.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    width: 100%;
}

.title-wrapper {
    flex: 1;
    text-align: center;
}

/* 标题 */
h1 {
    color: var(--text-color);
    font-size: 2.5em;
    margin: 0;
}

/* 搜索栏 */
.search-bar {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
}

#search {
    padding: 10px;
    width: 60%;
    border: 2px solid #ff007a;
    border-radius: 25px;
    background: var(--input-bg);
    color: var(--input-text-color);
    outline: none;
    transition: border-color 0.3s;
}

#search::placeholder {
    color: var(--placeholder-color);
}

#search:focus {
    border-color: #00ffcc;
}

/* 按钮通用样式 */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 25px;
    color: #fff;
    text-decoration: none;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}

.btn.small {
    padding: 8px;
    font-size: 0.9em;
    min-width: 32px;
}

/* 具体按钮样式 */
.search-btn {
    background: linear-gradient(45deg, #ff007a, #ff00cc);
    box-shadow: 0 0 15px rgba(255, 0, 122, 0.5);
}

.search-btn:hover {
    background: linear-gradient(45deg, #ff00cc, #ff007a);
}

.add-btn {
    background: linear-gradient(45deg, #00ffcc, #00ccff);
    box-shadow: 0 0 15px rgba(0, 255, 204, 0.5);
}

.add-btn:hover {
    background: linear-gradient(45deg, #00ccff, #00ffcc);
}

.edit-btn {
    background: linear-gradient(45deg, #ffcc00, #ff9900);
    box-shadow: 0 0 15px rgba(255, 204, 0, 0.5);
}

.edit-btn:hover {
    background: linear-gradient(45deg, #ff9900, #ffcc00);
}

.delete-btn {
    background: linear-gradient(45deg, #ff3333, #ff6666);
    box-shadow: 0 0 15px rgba(255, 51, 51, 0.5);
}

.delete-btn:hover {
    background: linear-gradient(45deg, #ff6666, #ff3333);
}

.cancel-btn {
    background: linear-gradient(45deg, #ff3333, #ff6666);
    box-shadow: 0 0 15px rgba(255, 51, 51, 0.5);
}

.cancel-btn:hover {
    background: linear-gradient(45deg, #ff6666, #ff3333);
}

.save-btn {
    background: linear-gradient(45deg, #00ffcc, #00ccff);
    box-shadow: 0 0 15px rgba(0, 255, 204, 0.5);
}

.save-btn:hover {
    background: linear-gradient(45deg, #00ccff, #00ffcc);
}

/* 分类导航 */
.category-nav {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.category-nav a {
    padding: 8px 16px;
    background: var(--input-bg);
    color: var(--text-color);
    text-decoration: none;
    border-radius: 20px;
    transition: all 0.3s;
    border: 1px solid #00ffcc;
}

.category-nav a:hover, .category-nav a.active {
    background: #00ffcc;
    color: #1a1a2e;
    box-shadow: 0 0 15px #00ffcc;
}

/* 新增分类包裹器 */
.category-wrapper {
    width: 100%;
    display: block;
    margin-bottom: 30px;
}

/* 更新分类样式 */
.category {
    margin-bottom: 20px;
    display: block;
    width: 100%;
}

.category h2 {
    color: var(--text-color);
    font-size: 1.5em;
    margin: 0 0 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 书签容器 */
.bookmark-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    width: 100%;
    padding-bottom: 20px;
}

.bookmark {
    width: 107px;
    height: 107px;
    padding: 10px;
    background: var(--bookmark-bg);
    border-radius: 10px;
    box-shadow: 0 0 15px var(--shadow-color);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    border: 1px solid #00ffcc;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.bookmark:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 25px var(--shadow-color);
}

.bookmark a {
    text-decoration: none;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.bookmark-text {
    text-align: center;
    padding: 5px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 5px;
    width: 100%;
    max-width: 100%;
    height: 100%;
    z-index: 2;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2em;
}

.name {
    font-size: 0.73em;
    font-weight: bold;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    transition: font-size 0.2s;
    text-shadow: 0 0 5px #000000;
    color: #ffffff;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
    padding-top: 5px;
    line-height: 1.2em;
    max-height: 2.4em;
}

.note {
    font-size: 0.6em;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    transition: font-size 0.2s;
    text-shadow: 0 0 5px #000000;
    color: #ffffff;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
    line-height: 1.2em;
    max-height: 3.6em;
}

.actions {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    border-radius: 10px;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.bookmark.active .actions {
    display: flex;
}

.actions a {
    flex: 1;
    margin: 0;
    font-size: 0.67em;
    color: #00ffcc;
    text-decoration: none;
    text-align: center;
    padding: 7px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.actions .delete {
    color: #ff3333;
}

.actions .close {
    color: #fff;
}

/* 表单 */
form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 500px;
    margin: 0 auto;
}

label {
    color: var(--text-color);
    font-weight: bold;
}

input, textarea, select {
    padding: 10px;
    border: 2px solid #ff007a;
    border-radius: 10px;
    background: var(--input-bg);
    color: var(--input-text-color);
    outline: none;
    transition: border-color 0.3s;
    font-size: 1em;
    font-family: 'Orbitron', sans-serif;
    width: 100%;
    box-sizing: border-box;
}

input::placeholder, textarea::placeholder, select:invalid {
    color: var(--placeholder-color);
}

input:focus, textarea:focus, select:focus {
    border-color: #00ffcc;
}

textarea {
    resize: vertical;
    min-height: 80px;
}

#newCategoryInput {
    margin-top: 10px;
    padding: 10px;
    border: 2px solid #ff007a;
    border-radius: 10px;
    background: var(--input-bg);
    color: var(--input-text-color);
    outline: none;
    transition: border-color 0.3s;
    font-size: 1em;
    font-family: 'Orbitron', sans-serif;
    width: 100%;
    box-sizing: border-box;
    text-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}

#newCategoryInput:focus {
    border-color: #00ffcc;
}

select {
    text-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}

select option {
    background: #1a1a2e;
    color: #ffffff;
    text-shadow: none;
}

[data-theme="light"] select {
    text-shadow: none;
}

[data-theme="light"] select option {
    background: #ffffff;
    color: #333333;
}

[data-theme="light"] #newCategoryInput {
    text-shadow: none;
}

/* 表单按钮容器 */
.form-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

.form-buttons .btn {
    padding: 10px 30px;
    font-size: 1em;
}

/* 错误和成功提示 */
.success-message {
    background: rgba(0, 255, 128, 0.2);
    color: #00ff80;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: block;
    text-align: center;
}

.error-message {
    background: rgba(255, 51, 51, 0.2);
    color: #ff3333;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: block;
    text-align: center;
}

[data-theme="light"] .error-message {
    text-shadow: none;
}

/* 添加空分类时的提示样式 */
.category p {
    color: var(--text-color);
    font-size: 1em;
    margin: 10px 0;
    opacity: 0.7;
}

/* 樱花特效 Canvas */
#sakura {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

/* 备份功能样式 */
.backup-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
    max-width: 600px;
    margin: 0 auto;
}

.backup-section {
    background: var(--bookmark-bg);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 0 15px var(--shadow-color);
    border: 1px solid #00ffcc;
}

.backup-section h2 {
    margin-top: 0;
    color: var(--text-color);
    border-bottom: 1px solid #00ffcc;
    padding-bottom: 10px;
}

.backup-section p {
    color: var(--text-color);
    margin-bottom: 20px;
}

.drag-drop-area {
    border: 2px dashed #00ffcc;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
    color: var(--text-color);
    background: var(--input-bg);
    cursor: pointer;
}

.drag-drop-area.dragover {
    background: rgba(0, 255, 204, 0.1);
}

.drag-drop-area .icon {
    font-size: 48px;
    margin-bottom: 10px;
}

.file-input {
    display: none;
}

.checkbox-container {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.checkbox-container input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
}

.space-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 响应式设计 */
@media (max-width: 600px) {
    .container {
        padding: 15px;
    }

    .header-top {
        gap: 10px;
    }

    .title-wrapper h1 {
        font-size: 1.5em;
    }

    .search-bar {
        gap: 5px;
    }

    .btn.search-btn {
        padding: 8px 10px;
        font-size: 0.8em;
    }

    .btn.small {
        padding: 6px;
        font-size: 0.8em;
    }

    .category h2 {
        font-size: 1.2em;
    }

    .bookmark {
        width: 80px;
        height: 80px;
    }

    .bookmark-text {
        padding: 3px;
        max-width: 100%;
        background: rgba(0, 0, 0, 0.5);
        width: 100%;
        height: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1.2em;
    }

    .name {
        font-size: 0.6em;
        font-weight: bold;
        color: #ffffff;
        text-shadow: 0 0 3px rgba(0, 0, 0, 0.8);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
        text-align: center;
        padding-top: 3px;
        margin: 0;
        line-height: 1.2em;
        max-height: 2.4em;
    }

    .note {
        font-size: 0.5em;
        color: #ffffff;
        text-shadow: 0 0 3px rgba(0, 0, 0, 0.8);
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
        text-align: center;
        margin: 0;
        line-height: 1.2em;
        max-height: 3.6em;
    }

    .actions {
        display: none;
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.9);
        border-radius: 10px;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        z-index: 10;
    }

    .bookmark.active .actions {
        display: flex;
    }

    .actions a {
        flex: 1;
        margin: 0;
        font-size: 0.67em;
        color: #00ffcc;
        text-decoration: none;
        text-align: center;
        padding: 7px;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .actions .delete {
        color: #ff3333;
    }

    .actions .close {
        color: #fff;
    }

    .backup-section {
        padding: 15px;
    }
    
    .drag-drop-area {
        padding: 20px;
    }
}