:root {
    --dark-green: #2E7D32;
    --medium-green: #388E3C;
    --light-green: #4CAF50;
    --lighter-green: #C8E6C9;
    --light-bg: #F1F8E9;
}

body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    line-height: 1.6;
}

.bg-dark-green {
    background-color: var(--dark-green);
}

.bg-medium-green {
    background-color: var(--medium-green);
}

.bg-light-green {
    background-color: var(--light-green);
}

.bg-lighter-green {
    background-color: var(--lighter-green);
}

.btn-dark-green {
    background-color: var(--dark-green);
    color: white;
    border: none;
}

.btn-dark-green:hover {
    background-color: #1B5E20;
    color: white;
}

.btn-light-green {
    background-color: var(--light-green);
    color: white;
    border: none;
}

.btn-light-green:hover {
    background-color: var(--medium-green);
    color: white;
}

.trip-card {
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
}

.trip-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.timeline {
    position: relative;
    padding-left: 1rem;
    margin-left: 1rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--light-green);
}

.timeline-day {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-day::before {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--dark-green);
    z-index: 1;
}

.icon-circle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--light-bg);
    color: var(--dark-green);
}

.min-vh-100 {
    min-height: 100vh;
}

.fixed-bottom {
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

@media (max-width: 768px) {
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .timeline {
        padding-left: 0.5rem;
        margin-left: 0.5rem;
    }
    
    .timeline-day::before {
        left: -0.8rem;
    }
}
/* 待办事项样式 */
.todo-item {
    padding: 6px 0;
    border-bottom: 1px solid #f0f0f0;
}

.todo-item:last-child {
    border-bottom: none;
}

.todo-checkbox {
    margin-top: 0.2em;
}

.todo-checkbox:checked + label {
    text-decoration: line-through;
    color: #6c757d;
    opacity: 0.8;
}

.todo-container {
    margin-top: 8px;
    padding-left: 10px;
    border-left: 2px solid #e9ecef;
}

.completed {
    text-decoration: line-through;
    color: #6c757d !important;
}
/* 重复项提示样式 */
.todo-duplicate {
    border-color: #dc3545 !important;
}

.todo-error-message {
    color: #dc3545;
    font-size: 0.875em;
    margin-top: -0.5rem;
    margin-bottom: 0.5rem;
    display: none;
}
/* 覆盖 Bootstrap 的按钮变量 */
.btn-outline-info.detail-btn:hover i {
    color: white !important;
    /* 覆盖 Bootstrap 的变量 */
    --bs-btn-hover-color: #fff !important;
}

.btn-outline-info.detail-btn:hover {
    /* 覆盖 Bootstrap 的变量 */
    --bs-btn-hover-color: #fff !important;
    color: #fff !important;
}
        
/* 确保过渡效果 */
.btn-outline-info.detail-btn i {
    transition: color 0.2s ease;
}