/* 基础样式设置 */
:root {
    --primary-color: #4c8bf5;
    --primary-light: #d6e4ff;
    --primary-dark: #3a6bc5;
    --secondary-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --grey-light: #f8f9fa;
    --grey-medium: #e9ecef;
    --grey-dark: #6c757d;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background-color: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 头部样式 */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

header h1 {
    margin-bottom: 10px;
    font-size: 2.2rem;
    animation: slideInFromTop 0.5s ease;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
    animation: slideInFromBottom 0.5s ease 0.2s both;
}

@keyframes slideInFromTop {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideInFromBottom {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* 步骤导航 */
.steps-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 50px;
    background-color: var(--grey-light);
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 1;
}

.step-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: white;
    border: 2px solid var(--grey-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    transition: var(--transition);
}

.step-circle.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.step-circle.completed {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
}

.step-line {
    flex: 1;
    height: 3px;
    background-color: var(--grey-dark);
    margin: 0 10px;
    transition: var(--transition);
}

.step-line.active {
    background-color: var(--primary-color);
}

.step-name {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--grey-dark);
    transition: var(--transition);
}

.step-name.active {
    color: var(--primary-color);
    font-weight: bold;
}

/* 通用区域样式 */
.section {
    padding: 30px;
    animation: fadeIn 0.5s ease;
}

.section h2 {
    margin-bottom: 20px;
    color: var(--primary-dark);
    position: relative;
    padding-bottom: 10px;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
}

.hidden {
    display: none;
}

/* 按钮样式 */
button {
    cursor: pointer;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
    padding: 10px 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.next-btn {
    background-color: var(--primary-color);
    color: white;
    float: right;
}

.next-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 139, 245, 0.3);
}

.back-btn {
    background-color: var(--grey-medium);
    color: var(--grey-dark);
}

.back-btn:hover {
    background-color: var(--grey-dark);
    color: white;
    transform: translateY(-2px);
}

.save-btn {
    background-color: var(--secondary-color);
    color: white;
}

.save-btn:hover {
    background-color: #218838;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.3);
}

.restart-btn {
    background-color: var(--warning-color);
    color: #212529;
}

.restart-btn:hover {
    background-color: #e0a800;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 193, 7, 0.3);
}

.btn-group {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* 步骤1: 任务输入 */
.task-input-container {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

#taskInput {
    flex: 1;
    padding: 12px 15px;
    border: 2px solid var(--grey-medium);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}

#taskInput:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(76, 139, 245, 0.25);
}

#addTaskBtn {
    background-color: var(--primary-color);
    color: white;
    padding: 12px 20px;
}

#addTaskBtn:hover {
    background-color: var(--primary-dark);
}

.task-error {
    color: var(--danger-color);
    font-size: 0.9rem;
    margin-bottom: 15px;
    font-weight: 500;
    min-height: 20px;
}

.task-list {
    list-style: none;
    margin-bottom: 30px;
}

.task-item {
    background-color: var(--grey-light);
    border-radius: var(--radius);
    padding: 15px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease;
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.task-item:hover {
    background-color: white;
    box-shadow: var(--shadow);
}

.task-name {
    font-weight: 500;
    flex: 1;
}

.task-actions {
    display: flex;
    gap: 10px;
}

.task-actions button {
    background-color: transparent;
    color: var(--grey-dark);
    padding: 5px;
    font-size: 1rem;
}

.task-actions button:hover {
    color: var(--danger-color);
}

/* 步骤2: 优先级排序 */
.priority-list {
    list-style: none;
}

.priority-item {
    background-color: white;
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: grab;
    position: relative;
    border-left: 5px solid var(--primary-color);
}

.priority-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.priority-item:active {
    cursor: grabbing;
}

.priority-handle {
    padding: 10px;
    color: var(--grey-dark);
    margin-right: 15px;
}

.priority-rank {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    margin-right: 15px;
}

/* 步骤3: 任务详细信息 */
.task-details-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.task-detail-card {
    background-color: white;
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border-left: 5px solid var(--primary-color);
    animation: fadeIn 0.3s ease;
}

.task-detail-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.task-detail-number {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    margin-right: 15px;
}

.task-detail-title {
    font-weight: 600;
    font-size: 1.1rem;
    flex: 1;
}

.task-detail-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--grey-dark);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--grey-medium);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(76, 139, 245, 0.25);
}

/* 滑块样式 */
.slider-container {
    padding: 0 10px;
}

.range-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: var(--grey-medium);
    outline: none;
    margin-top: 10px;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
}

.range-slider::-webkit-slider-thumb:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--grey-dark);
}

/* 日程规划表样式 */
.schedule-container {
    background-color: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 30px;
    overflow: hidden;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background-color: var(--primary-color);
    color: white;
}

.calendar-header button {
    background-color: transparent;
    color: white;
    font-size: 1.2rem;
}

.calendar-header button:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    font-weight: 600;
    padding: 10px 0;
    background-color: var(--grey-light);
    border-bottom: 1px solid var(--grey-medium);
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-gap: 1px;
    background-color: var(--grey-medium);
}

.calendar-day {
    height: 80px;
    background-color: white;
    padding: 5px;
    position: relative;
    transition: var(--transition);
}

.calendar-day:hover {
    background-color: var(--primary-light);
}

.calendar-day.today {
    background-color: rgba(76, 139, 245, 0.1);
}

.calendar-day.has-tasks {
    position: relative;
}

.calendar-day.has-tasks::after {
    content: '';
    position: absolute;
    right: 5px;
    top: 5px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--primary-color);
}

.calendar-day-number {
    font-size: 0.9rem;
    color: var(--grey-dark);
    position: absolute;
    top: 5px;
    left: 5px;
}

.calendar-tasks {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow: hidden;
}

.calendar-task-dot {
    width: 100%;
    padding: 2px 4px;
    border-radius: 3px;
    font-size: 0.7rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: white;
    margin-bottom: 2px;
}

/* 日程详细视图 */
.day-schedule-header {
    display: flex;
    align-items: center;
    padding: 15px;
    background-color: var(--primary-color);
    color: white;
}

.day-schedule-header button {
    background-color: transparent;
    color: white;
    margin-right: 15px;
}

.day-schedule-content {
    padding: 20px;
}

.day-task {
    background-color: white;
    border-radius: var(--radius);
    padding: 15px;
    margin-bottom: 15px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    border-left: 4px solid var(--primary-color);
    animation: fadeIn 0.3s ease;
}

.day-task-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.day-task-title {
    font-weight: 600;
    font-size: 1.1rem;
}

.day-task-time {
    color: var(--grey-dark);
    font-size: 0.9rem;
}

.day-task-details {
    color: var(--grey-dark);
    font-size: 0.95rem;
}

.day-empty-message {
    text-align: center;
    padding: 40px 0;
    color: var(--grey-dark);
}

/* 尾部样式 */
footer {
    text-align: center;
    padding: 20px;
    color: var(--grey-dark);
    font-size: 0.9rem;
    margin-top: 30px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .steps-container {
        padding: 20px;
    }
    
    .step-name {
        font-size: 0.75rem;
    }
    
    .section {
        padding: 20px;
    }
    
    .task-input-container {
        flex-direction: column;
    }
    
    .btn-group.final-btns {
        flex-direction: column;
        gap: 10px;
    }
    
    .btn-group.final-btns button {
        width: 100%;
    }
}

/* 动画 */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 1.5s infinite;
}

/* 拖拽样式 */
.sortable-ghost {
    opacity: 0.5;
    background-color: var(--grey-light) !important;
}

.sortable-drag {
    opacity: 0.8;
    transform: rotate(2deg);
}

/* Flatpickr 样式覆盖 */
.flatpickr-calendar {
    border-radius: var(--radius) !important;
    box-shadow: var(--shadow) !important;
}

.flatpickr-day.selected {
    background: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
}

/* 任务颜色标记 */
.priority-high {
    border-left-color: var(--danger-color) !important;
}

.priority-medium {
    border-left-color: var(--warning-color) !important;
}

.priority-low {
    border-left-color: var(--secondary-color) !important;
}

.task-dot-high {
    background-color: var(--danger-color);
}

.task-dot-medium {
    background-color: var(--warning-color);
}

.task-dot-low {
    background-color: var(--secondary-color);
}