/* ==============================================
   Modal / Dialog — Material Design 3
   ============================================== */

/* Overlay */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-medium) var(--easing-standard),
                visibility var(--duration-medium) var(--easing-standard);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Card */
.modal {
    width: 100%;
    max-width: 600px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    background: var(--md-surface-container-high);
    color: var(--md-on-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--elevation-3);
    transform: scale(0.92);
    opacity: 0;
    transition: transform var(--duration-medium) var(--easing-standard),
                opacity var(--duration-medium) var(--easing-standard);
}

.modal-overlay.active .modal {
    transform: scale(1);
    opacity: 1;
}

/* Header */
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 24px 24px 16px;
    flex-shrink: 0;
}

.modal-title {
    margin: 0;
    font-size: 1.375rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--md-on-surface);
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--md-on-surface-variant);
    font-size: 1.25rem;
    cursor: pointer;
    flex-shrink: 0;
    transition: background var(--duration-short) var(--easing-standard);
}

.modal-close:hover {
    background: var(--md-surface-variant);
}

.modal-close:active {
    background: var(--md-outline-variant);
}

/* Body */
.modal-body {
    padding: 0 24px;
    overflow-y: auto;
    flex: 1 1 auto;
}

/* Footer */
.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px 24px 24px;
    flex-shrink: 0;
}

.modal-footer .btn {
    min-width: 80px;
}

/* Size variants */
.modal--sm {
    max-width: 400px;
}

.modal--lg {
    max-width: 800px;
}

.modal--full {
    max-width: calc(100vw - 96px);
    max-height: calc(100vh - 96px);
}

/* Dividers (optional) */
.modal-header--divided {
    border-bottom: 1px solid var(--md-outline-variant);
    padding-bottom: 16px;
}

.modal-footer--divided {
    border-top: 1px solid var(--md-outline-variant);
    padding-top: 16px;
}