/* ==========================================================
   Agile AI University
   Student & Executive Portal

   File      : overlay.css
   Version   : 1.0.1
   Status    : ACTIVE
   Phase     : UI Foundation

   Purpose
   ----------------------------------------------------------
   Shared Overlay Framework
========================================================== */

/* ==========================================================
   OVERLAY
========================================================== */

.overlay {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* ==========================================================
   ACTIVE
========================================================== */

.overlay.is-open {
    display: flex;
}

/* ==========================================================
   BACKDROP
========================================================== */

.overlay-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(2px);
}

/* ==========================================================
   CONTAINER
========================================================== */

.overlay-container {
    position: relative;
    width: min(900px, 92vw);
    max-height: 90vh;
    overflow: hidden;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    z-index: 1;
}

/* ==========================================================
   HEADER
========================================================== */

.overlay-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #e5e7eb;
}

.overlay-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

/* ==========================================================
   CLOSE BUTTON
========================================================== */

.overlay-close {
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    padding: .25rem;
}

/* ==========================================================
   BODY
========================================================== */

.overlay-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

/* ==========================================================
   FOOTER
========================================================== */

.overlay-footer {
    display: flex;
    justify-content: flex-end;
    gap: .75rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid #e5e7eb;
}

/* ==========================================================
   RESPONSIVE
========================================================== */

@media (max-width: 768px) {
    .overlay {
        align-items: stretch;
    }

    .overlay-container {
        width: 100%;
        height: 100%;
        max-height: none;
        border-radius: 0;
    }
}