/* Base - Grid & Utilities (replaces Bootstrap/MDB layout) */
*, *::before, *::after { box-sizing: border-box; }

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -0.5em;
}

.row > * {
    padding: 0 0.5em;
}

[class*="col-"] {
    width: 100%;
}

.col-12 { flex: 0 0 100%; max-width: 100%; }
.col-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
.col-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
.col-9 { flex: 0 0 75%; max-width: 75%; }
.col-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
.col-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
.col-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }

@media (min-width: 576px) {
    .col-sm-12 { flex: 0 0 100%; max-width: 100%; }
    .col-sm-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
    .col-sm-6 { flex: 0 0 50%; max-width: 50%; }
    .col-sm-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
    .col-sm-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-sm-3 { flex: 0 0 25%; max-width: 25%; }
}

@media (min-width: 768px) {
    .col-md-12 { flex: 0 0 100%; max-width: 100%; }
    .col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .col-md-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
}

@media (min-width: 992px) {
    .col-lg-3 { flex: 0 0 25%; max-width: 25%; }
}

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu {
    display: none;
    position: absolute;
    z-index: 1000;
    min-width: 10rem;
    padding: 0.5rem 0;
    background: #fff;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    right: 0;
    left: auto;
}

.dropdown-menu.show { display: block; }

.dropdown-item {
    display: block;
    padding: 0.5rem 1rem;
    color: #333;
    text-decoration: none;
}

.dropdown-item.disabled { opacity: 0.6; pointer-events: none; }

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1050;
    overflow-x: hidden;
    overflow-y: auto;
}

.modal.show { display: flex !important; }
.modal.fade .modal-dialog { transition: transform 0.3s ease-out; }

/* Form base */
.form-control {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: #333;
    background-color: #fff;
    border: 1px solid rgba(0,0,0,0.2);
    border-radius: 0.375rem;
}

.form-control:focus {
    border-color: var(--primary, #24568f);
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(36, 86, 143, 0.15);
}

.btn {
    display: inline-block;
    font-weight: 400;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    border: 1px solid transparent;
}

.text-center { text-align: center; }
.float-left { float: left; }
.d-block { display: block; }
.w-100 { width: 100%; }