:root {
    --bg-color: #f5f7fa;
    --card-bg: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    
    /* Default Accent (Blue) */
    --accent-color: #3498db;
    --accent-gradient: linear-gradient(135deg, #3498db, #2980b9);
    --stripe-color: rgba(255, 255, 255, 0.15);
    --danger-color: #e74c3c;

    --border-radius: 12px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* Status Colors */
/* Pending (Grey) */
.task-card.status-pending,
.modal-content.status-pending {
    --accent-color: #95a5a6;
    --accent-gradient: linear-gradient(135deg, #bdc3c7, #95a5a6);
}

/* Active (Orange/Amber) */
.task-card.status-active,
.modal-content.status-active {
    --accent-color: #f39c12;
    --accent-gradient: linear-gradient(135deg, #f1c40f, #f39c12);
}

/* Completed (Green) */
.task-card.status-completed,
.modal-content.status-completed {
    --accent-color: #27ae60;
    --accent-gradient: linear-gradient(135deg, #2ecc71, #27ae60);
}

/* Error Status Styles */
.task-card.status-error,
.modal-content.status-error {
    --accent-color: #e74c3c;
    --accent-gradient: linear-gradient(135deg, #c0392b, #e74c3c);
    border: 2px solid #e74c3c !important;
}

/* Card Animation: Border Pulse (Attention) - Background flash removed */
.task-card.status-error {
    animation: error-border-pulse 2s infinite;
}

/* Modal Animation: Pulse only */
.modal-content.status-error {
    animation: error-border-pulse 2s infinite;
}

@keyframes error-border-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.4);
        border-color: rgba(231, 76, 60, 0.6);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(231, 76, 60, 0);
        border-color: rgba(231, 76, 60, 1);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0);
        border-color: rgba(231, 76, 60, 0.6);
    }
}

/* Log Levels */
.log-item.level-info .log-content {
    border-left-color: #3498db;
    background-color: #f5faff;
}

.log-item.level-success .log-content {
    border-left-color: #27ae60;
    background-color: #f0f9f4;
}

.log-item.level-warning .log-content {
    border-left-color: #f39c12;
    background-color: #fef9e7;
}

.log-item.level-error .log-content {
    border-left-color: #e74c3c;
    background-color: #fdedec;
}

.log-item.level-error .log-content,
.log-item.level-warning .log-content {
    font-weight: 500;
}

/* Override accent color inside logs based on level */
.log-item.level-info { --accent-color: #3498db; }
.log-item.level-success { --accent-color: #27ae60; }
.log-item.level-warning { --accent-color: #f39c12; }
.log-item.level-error { --accent-color: #e74c3c; }

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box; /* 确保 padding 不会撑大容器 */
}

main.container {
    flex: 1;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: auto;
}

footer a {
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 1px dotted var(--text-secondary);
    transition: color 0.2s;
}

footer a:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

/* Header */
header {
    background: var(--card-bg);
    padding: 2rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    margin-bottom: 2rem;
    transition: padding 0.3s;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; /* 允许换行，防止挤压 */
    gap: 15px;
}

header h1 {
    margin: 0;
    font-size: 2rem;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.5px;
}

header p {
    margin: 0.5rem 0 0;
    color: var(--text-secondary);
}

/* Embed Mode Support */
body.embed-mode header {
    padding: 0.5rem 0;
    margin-bottom: 1rem;
}

body.embed-mode #header-title-area,
body.embed-mode #share-btn,
body.embed-mode #delete-all-btn,
body.embed-mode #add-task-btn,
body.embed-mode footer,
body.embed-mode .divider {
    display: none;
}

body.embed-mode .header-content {
    justify-content: flex-end;
}

/* Controls */
.controls {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap; /* 允许按钮组在极小屏幕换行 */
}

.control-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.divider {
    width: 1px;
    height: 24px;
    background-color: #e0e0e0;
    margin: 0 5px;
}

/* Icon Button */
.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px; /* 稍微增加点击区域 */
    border-radius: 50%;
    color: var(--text-secondary);
    transition: background-color 0.2s, color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background-color: #f0f0f0;
    color: var(--text-primary);
}

.icon-btn:active {
    background-color: #e0e0e0;
}

.icon-btn.primary-icon-btn {
    color: var(--accent-color);
}

.icon-btn.primary-icon-btn:hover {
    background-color: rgba(52, 152, 219, 0.1);
}

.icon-btn.danger-btn:hover {
    color: var(--danger-color);
    background-color: rgba(231, 76, 60, 0.1);
}

/* Switch Toggle */
.switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 22px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
}

input:checked + .slider {
    background-color: var(--accent-color);
}

input:focus + .slider {
    box-shadow: 0 0 1px var(--accent-color);
}

input:checked + .slider:before {
    transform: translateX(18px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

/* Grid Layout - Changed to Flex for left alignment preference */
.task-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: flex-start; /* Align left */
    padding-bottom: 40px;
}

/* Task Card */
.task-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    border: 1px solid rgba(0,0,0,0.02);
    position: relative;
    overflow: hidden;
    
    /* Flex properties: Fixed width for desktop, responsive for mobile via media query */
    flex: 0 0 300px;
    max-width: 100%; 
    box-sizing: border-box; /* 确保 padding 包含在宽度内 */
}

.task-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

/* Pinned Task Style */
.task-card.pinned {
    border: 1px solid var(--accent-color);
    background: #fbfdff;
}

.task-card.pinned::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-color);
}

/* Drop-in Animation */
@keyframes dropIn {
    0% {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    60% {
        transform: translateY(10px) scale(1.02);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.task-card.new-task {
    animation: dropIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* 
   ============================
   更新动画 (+1 飘字效果)
   ============================
*/
.update-animation {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 20;
}

.update-plus {
    display: inline-block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-color);
    text-shadow: 
        0 0 10px rgba(52, 152, 219, 0.5),
        0 0 20px rgba(52, 152, 219, 0.3),
        2px 2px 4px rgba(0, 0, 0, 0.2);
    animation: floatUp 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

@keyframes floatUp {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.5);
    }
    20% {
        opacity: 1;
        transform: translateY(0) scale(1.2);
    }
    40% {
        transform: translateY(-10px) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateY(-50px) scale(0.8);
    }
}

/* 更新时卡片边框闪烁 */
.task-card:has(.update-animation) {
    animation: cardPulse 0.5s ease-out;
}

@keyframes cardPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(52, 152, 219, 0.7);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(52, 152, 219, 0);
    }
    100% {
        box-shadow: var(--shadow);
    }
}

/* Task Card Actions */
.task-actions {
    position: absolute;
    top: 15px;
    right: 15px;
    display: flex;
    gap: 5px;
    z-index: 2;
}

.action-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: #bdc3c7;
    padding: 5px;
    border-radius: 50%;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-btn:hover {
    background-color: #f0f2f5;
    color: var(--text-secondary);
}

.action-btn.active {
    color: var(--accent-color);
    background-color: rgba(52, 152, 219, 0.1);
}

.action-btn.active:hover {
    background-color: rgba(52, 152, 219, 0.2);
}

.action-btn.delete-btn:hover {
    color: var(--danger-color);
    background-color: rgba(231, 76, 60, 0.1);
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start; /* Align to top to accommodate actions */
    margin-bottom: 15px;
    padding-right: 70px; /* Space for actions */
}

.task-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
    word-break: break-word;
}

/* State Badges */
.error-badge, .warning-badge {
    flex-shrink: 0;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    line-height: 1.6;
    margin-left: 6px;
}

.error-badge {
    color: #fff;
    background: #e74c3c;
    animation: badge-pulse 1.5s infinite;
}

.warning-badge {
    color: #fff;
    background: #f39c12;
}

@keyframes badge-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.task-percent {
    font-weight: 700;
    color: var(--accent-color);
    font-size: 1.1rem;
    display: none; /* Hide top percent as requested */
}

/* Progress Bar & Stripe Animation */
@keyframes stripes {
    from {
        background-position: 1rem 0;
    }
    to {
        background-position: 0 0;
    }
}

.progress-bar-bg {
    background-color: #ecf0f1;
    height: 10px;
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--accent-color);
    background-image: linear-gradient(
        45deg,
        var(--stripe-color) 25%,
        transparent 25%,
        transparent 50%,
        var(--stripe-color) 50%,
        var(--stripe-color) 75%,
        transparent 75%,
        transparent
    );
    background-size: 1rem 1rem;
    border-radius: 5px;
    transition: width 1s cubic-bezier(0.22, 0.61, 0.36, 1);
    animation: stripes 1s linear infinite;
}

/* Stop animation for pending (empty) and completed tasks if desired, but usually looks good on active */
.task-card.status-pending .progress-bar-fill,
.modal-content.status-pending .progress-bar-fill {
    animation: none;
    background-image: none; /* No stripes for empty */
    background-color: var(--accent-color); /* Just plain grey */
}

.task-stats {
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.task-stats .stats-percent {
    font-weight: 700;
    color: var(--text-primary);
}

.task-times {
    font-size: 0.8rem;
    color: #95a5a6;
    border-top: 1px solid #f0f0f0;
    padding-top: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.loading {
    text-align: center;
    width: 100%;
    padding: 40px;
    color: var(--text-secondary);
}

/* Modal */
.modal {
    position: fixed;
    z-index: 100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.modal.show {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    position: relative;
    box-sizing: border-box;
}

.close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    z-index: 10; /* Ensure it's above content */
}

.close-btn:hover {
    color: var(--text-primary);
}

.modal-progress-section {
    margin: 20px 0;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.meta-info {
    font-size: 0.85rem;
    color: #95a5a6;
    margin-top: 10px;
}

/* Form Styles */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    box-sizing: border-box;
    font-family: inherit;
}

.form-input:focus {
    border-color: var(--accent-color);
    outline: none;
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .form-group {
    flex: 1;
}

/* Password Modal Elements */
.password-input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 1rem;
    box-sizing: border-box;
}

.password-input:focus {
    border-color: var(--accent-color);
    outline: none;
}

.remember-me {
    display: block;
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.btn {
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.secondary-btn {
    background: #f0f2f5;
    color: var(--text-primary);
}

.secondary-btn:hover {
    background: #e4e6e9;
}

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

.primary-btn:hover {
    opacity: 0.9;
}

/* Logs */
.logs-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.log-item {
    display: flex;
    gap: 15px;
}

.log-time {
    font-size: 0.85rem;
    color: var(--text-secondary);
    min-width: 140px;
    text-align: right;
}

.log-content {
    background: #f8f9fa;
    padding: 10px 15px;
    border-radius: 8px;
    flex-grow: 1;
    border-left: 4px solid var(--accent-color);
    font-size: 0.95rem;
    word-break: break-word; /* 防止长日志撑开容器 */
}

/* 
   ============================
   Mobile Responsive Styles 
   ============================
*/
@media (max-width: 768px) {
    .container {
        padding: 0 15px; /* 减小两侧 padding */
    }

    /* Header Changes */
    header {
        padding: 1.5rem 0;
    }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    #header-title-area {
        width: 100%;
    }
    
    .controls {
        width: 100%;
        justify-content: space-between; /* 按钮分散对齐 */
    }

    /* Task Card Changes */
    .task-card {
        flex: 0 0 100%; /* 强制占满一行 */
        max-width: 100%;
    }
    
    .task-grid {
        gap: 15px; /* 减小卡片间距 */
    }

    /* Modal Adjustments */
    .modal-content {
        padding: 20px;
        width: 95%;
        max-height: 90vh;
    }
    
    .log-item {
        flex-direction: column;
        gap: 5px;
    }
    
    .log-time {
        min-width: auto;
        text-align: left;
        font-size: 0.8rem;
    }
    
    /* 分页组件移动端适配 */
    .pagination-container {
        padding: 15px 0;
    }
    
    .pagination {
        gap: 10px;
    }
    
    .pagination-total {
        display: none;
    }
}

/* 
   ============================
   分页组件样式
   ============================
*/
.pagination-container {
    display: flex;
    justify-content: center;
    padding: 30px 0;
    margin-top: 10px;
}

.pagination {
    display: flex;
    align-items: center;
    gap: 15px;
    background: var(--card-bg);
    padding: 12px 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.pagination-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
}

.pagination-btn:hover:not(:disabled) {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

.pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination-info {
    font-size: 0.95rem;
    color: var(--text-secondary);
    user-select: none;
}

.pagination-info strong {
    color: var(--accent-color);
    font-weight: 600;
}

.pagination-total {
    color: #95a5a6;
    font-size: 0.85rem;
}

/* 
   ============================
   日志区域样式
   ============================
*/
.logs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.logs-header h3 {
    margin: 0;
}

.logs-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: #f0f2f5;
    padding: 4px 10px;
    border-radius: 12px;
}

.logs-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.logs-pagination .pagination-btn {
    width: 32px;
    height: 32px;
}

.logs-pagination .pagination-info {
    font-size: 0.85rem;
}