/* 完成頁面樣式 */
.completion-card {
    background: linear-gradient(135deg, 
        rgba(52, 73, 94, 0.9) 0%, 
        rgba(44, 62, 80, 0.9) 100%);
    border-radius: 20px;
    padding: 40px;
    margin: 30px 0;
    border: 2px solid var(--color-primary-red);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.completion-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, 
        transparent 30%, 
        rgba(196, 30, 58, 0.1) 50%, 
        transparent 70%);
    pointer-events: none;
}

.mentor-welcome {
    position: relative;
    z-index: 2;
    margin-bottom: 40px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.mentor-avatar {
    font-size: 64px;
    margin-bottom: 20px;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.welcome-message {
    color: white;
    font-size: 1.2em;
    line-height: 1.6;
    margin: 0;
    font-weight: 500;
}

.first-task {
    position: relative;
    z-index: 2;
    margin-bottom: 40px;
    padding: 25px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.first-task h3 {
    color: var(--color-primary-red);
    font-size: 1.3em;
    margin-bottom: 15px;
}

.first-task p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
    line-height: 1.6;
}

.task-reward {
    background: rgba(196, 30, 58, 0.2);
    padding: 15px;
    border-radius: 10px;
    margin: 20px 0;
    border: 1px solid rgba(196, 30, 58, 0.3);
}

.task-reward strong {
    color: var(--color-primary-red);
}

.task-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 25px;
}

.features-preview {
    position: relative;
    z-index: 2;
    margin-bottom: 40px;
}

.features-preview h3 {
    color: white;
    font-size: 1.3em;
    margin-bottom: 25px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.feature-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 15px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.feature-item h4 {
    color: white;
    font-size: 1.1em;
    margin-bottom: 10px;
}

.feature-item p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9em;
    line-height: 1.5;
    margin: 0;
}

.congratulations {
    position: relative;
    z-index: 2;
    margin-bottom: 30px;
    padding: 25px;
    background: linear-gradient(135deg, 
        rgba(39, 174, 96, 0.2) 0%, 
        rgba(46, 204, 113, 0.2) 100%);
    border-radius: 15px;
    border: 1px solid rgba(39, 174, 96, 0.3);
}

.congratulations h3 {
    color: #2ecc71;
    font-size: 1.3em;
    margin-bottom: 15px;
}

.congratulations p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    margin: 0;
}

/* 按鈕樣式增強 */
.completion-card .btn {
    position: relative;
    z-index: 2;
    margin: 10px;
    padding: 15px 30px;
    font-size: 1.1em;
    font-weight: bold;
    border-radius: 25px;
    transition: all 0.3s ease;
    min-width: 200px;
}

.completion-card .btn-primary {
    background: var(--color-primary-red);
    border: none;
    color: white;
}

.completion-card .btn-primary:hover {
    background: var(--color-secondary-red);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(196, 30, 58, 0.4);
}

.completion-card .btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
}

.completion-card .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.completion-card .btn.completed {
    background: #27ae60;
    color: white;
}

.completion-card .btn.completed:hover {
    background: #229954;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .completion-card {
        padding: 25px 20px;
        margin: 20px 0;
    }
    
    .mentor-welcome {
        padding: 20px;
        margin-bottom: 30px;
    }
    
    .mentor-avatar {
        font-size: 48px;
        margin-bottom: 15px;
    }
    
    .welcome-message {
        font-size: 1.1em;
    }
    
    .first-task {
        padding: 20px;
        margin-bottom: 30px;
    }
    
    .task-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .feature-item {
        padding: 15px;
    }
    
    .feature-icon {
        font-size: 28px;
    }
    
    .completion-card .btn {
        margin: 8px;
        padding: 12px 25px;
        font-size: 1em;
        min-width: 180px;
    }
}

@media (max-width: 480px) {
    .completion-card {
        padding: 20px 15px;
    }
    
    .mentor-welcome {
        padding: 15px;
    }
    
    .mentor-avatar {
        font-size: 40px;
    }
    
    .welcome-message {
        font-size: 1em;
    }
    
    .first-task {
        padding: 15px;
    }
    
    .feature-item {
        padding: 12px;
    }
    
    .completion-card .btn {
        min-width: 150px;
        padding: 10px 20px;
        font-size: 0.9em;
    }
}