/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    line-height: 1.5;
}

.btn:disabled, .btn.disabled {
    opacity: 0.65;
    pointer-events: none;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--clr-primary-500);
    color: #fff;
}
.btn-primary:hover {
    background-color: var(--clr-primary-700);
    color: #fff;
}

.btn-secondary {
    background-color: var(--clr-gray-200);
    color: var(--clr-gray-700);
}
.btn-secondary:hover {
    background-color: var(--clr-gray-300);
    color: var(--clr-gray-900);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--clr-primary-500);
    color: var(--clr-primary-500);
}
.btn-outline:hover {
    background-color: var(--clr-primary-50);
    color: var(--clr-primary-700);
}

/* Cards */
.card {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-gray-200);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card-img-top {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: var(--clr-gray-100);
}

.card-body {
    padding: var(--space-4);
    flex: 1;
}

.card-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
}

/* Forms */
.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    margin-bottom: var(--space-1);
    font-weight: 500;
    font-size: var(--text-sm);
    color: var(--clr-gray-700);
}

.form-control, .form-select {
    display: block;
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-base);
    line-height: 1.5;
    color: var(--clr-gray-900);
    background-color: #fff;
    border: 1px solid var(--clr-gray-300);
    border-radius: var(--radius-md);
    transition: border-color 0.15s, box-shadow 0.15s;
    font-family: inherit;
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--clr-primary-300);
    box-shadow: 0 0 0 3px rgba(0, 150, 136, 0.25);
}

.form-control.is-invalid {
    border-color: var(--clr-danger);
}
.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.25);
}
.invalid-feedback {
    display: block;
    width: 100%;
    margin-top: var(--space-1);
    font-size: var(--text-xs);
    color: var(--clr-danger);
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}
.form-check-input {
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}
.form-check-label {
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--clr-gray-700);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25em 0.6em;
    font-size: var(--text-xs);
    font-weight: 600;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: var(--radius-full);
}
.badge-primary { background-color: var(--clr-primary-100); color: var(--clr-primary-900); }
.badge-warning { background-color: var(--clr-warning-bg); color: var(--clr-warning); }
.badge-danger { background-color: var(--clr-danger-bg); color: var(--clr-danger); }
.badge-success { background-color: var(--clr-success-bg); color: var(--clr-success); }

/* Breadcrumb */
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    font-size: var(--text-sm);
    color: var(--clr-gray-500);
}
.breadcrumb-item + .breadcrumb-item::before {
    content: "/";
    padding: 0 var(--space-2);
    color: var(--clr-gray-400);
}
.breadcrumb-item a {
    color: var(--clr-primary-500);
}
.breadcrumb-item.active {
    color: var(--clr-gray-700);
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0; pointer-events: none;
    transition: opacity 0.3s;
}
.modal-backdrop.show {
    opacity: 1; pointer-events: auto;
}
.modal-content {
    background: #fff;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-20px);
    transition: transform 0.3s;
}
.modal-backdrop.show .modal-content {
    transform: translateY(0);
}
.modal-header {
    padding: var(--space-4);
    border-bottom: 1px solid var(--clr-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.modal-title { margin-bottom: 0; font-size: var(--text-lg); }
.modal-close {
    background: none; border: none; font-size: var(--text-xl); cursor: pointer; color: var(--clr-gray-500);
}
.modal-body { padding: var(--space-4); }
.modal-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--clr-gray-200);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
}

/* Toasts */
.toast-container {
    position: fixed;
    bottom: var(--space-4);
    right: var(--space-4);
    z-index: 1050;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}
.toast {
    min-width: 250px;
    background-color: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border-left: 4px solid var(--clr-primary-500);
}
.toast-success { border-left-color: var(--clr-success); }
.toast-danger { border-left-color: var(--clr-danger); }
.toast-body { padding: var(--space-3); font-size: var(--text-sm); }