/* Custom CSS for Todo App */

/* Body and overall layout */
body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
}

.container {
    flex: 1;
}

/* Stats Cards */
.stat-card {
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.stat-card .card-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

/* Todo Cards */
.todo-card {
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border-left: 4px solid #0d6efd;
}

.todo-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    transform: translateX(5px);
}

.todo-card.completed {
    background-color: #f8f9fa;
    border-left-color: #198754;
    opacity: 0.85;
}

.todo-card .card-title {
    margin-bottom: 0.5rem;
    font-weight: 500;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: nowrap;
}

.action-buttons .btn {
    transition: all 0.2s ease;
}

.action-buttons .btn:hover {
    transform: scale(1.1);
}

/* Filter buttons */
.btn-group .btn {
    transition: all 0.2s ease;
}

.btn-group .btn.active {
    font-weight: 600;
}

/* Forms */
.form-control {
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    padding: 0.6rem 0.9rem;
    font-size: 0.95rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    background-color: #f8fafc;
    color: #1e293b;
}

.form-control::placeholder {
    color: #a0aec0;
    font-style: italic;
}

.form-control:hover {
    border-color: #b3bfff;
    background-color: #fff;
}

.form-control:focus {
    border-color: #667eea;
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
    outline: none;
}

.form-check-input {
    width: 1.15em;
    height: 1.15em;
    border: 2px solid #cbd5e1;
    border-radius: 4px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
}

.form-check-input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.form-check-input:checked {
    background-color: #667eea;
    border-color: #667eea;
}

.form-label {
    font-weight: 600;
    font-size: 0.875rem;
    color: #475569;
    margin-bottom: 0.35rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

/* Card styling */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.card-header {
    border-radius: 10px 10px 0 0 !important;
    font-weight: 600;
}

/* Navbar */
.navbar {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.5rem;
}

/* Footer */
footer {
    margin-top: auto;
    border-top: 1px solid #dee2e6;
}

/* Empty state */
.alert i.bi-inbox {
    color: #0dcaf0;
    display: block;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.todo-card {
    animation: fadeIn 0.3s ease;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .action-buttons {
        flex-direction: column;
    }
    
    .stat-card .card-title {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 2rem;
    }
}