.modal-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--modal-z-index);
    display: none;
    pointer-events: none;
}
.modal-container--is-open {
    display: block;
    pointer-events: all;
}
.modal__backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-backdrop-bg);
    opacity: 0;
    transition: opacity var(--transition-speed) ease-out;
    pointer-events: all;
}
.modal__backdrop--blur {
    background-color: var(--modal-backdrop-blur-bg);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}
.modal__backdrop--none {
    background-color: transparent;
}
.modal-container--is-open .modal__backdrop {
    opacity: 1;
}

.modal {
    position: absolute;
    background-color: var(--color-bg-modal);
    box-shadow: var(--modal-shadow);
    color: var(--color-text-primary);
    display: flex;
    flex-direction: column;
    opacity: 0;
    pointer-events: all;
    overflow: hidden;
    transition:
        opacity var(--transition-speed) ease-out,
        transform var(--transition-speed) ease-out;
}

.modal--is-visible {
    opacity: 1;
}
.modal--is-hidden {
    opacity: 0;
    pointer-events: none;
    display: none;
}
.modal--is-leaving {
    opacity: 0;
}

.modal--position-center {
    top: 50%;
    left: 50%;
    border-radius: var(--border-radius-md);
    max-height: var(--modal-center-max-height);
}
.modal--position-center.modal--is-visible {
    transform: translate(-50%, -50%) scale(1);
}
.modal--position-center.modal--is-leaving {
    transform: translate(-50%, -50%) scale(0.95);
}

.modal--position-right {
    top: 0;
    right: 0;
    height: var(--modal-drawer-height);
    max-height: var(--modal-drawer-max-height);
    transform: translateX(100%);
}
.modal--position-right.modal--is-visible {
    transform: translateX(0);
}
.modal--position-right.modal--is-leaving {
    transform: translateX(100%);
}

.modal--position-left {
    top: 0;
    left: 0;
    height: var(--modal-drawer-height);
    max-height: var(--modal-drawer-max-height);
    transform: translateX(-100%);
}
.modal--position-left.modal--is-visible {
    transform: translateX(0);
}
.modal--position-left.modal--is-leaving {
    transform: translateX(-100%);
}

.modal--position-top {
    top: 0;
    left: 0;
    width: var(--modal-sheet-width);
    max-height: var(--modal-sheet-top-max-height);
    transform: translateY(-100%);
}
.modal--position-top.modal--is-visible {
    transform: translateY(0);
}
.modal--position-top.modal--is-leaving {
    transform: translateY(-100%);
}

.modal--position-bottom {
    bottom: 0;
    left: 0;
    width: var(--modal-sheet-width);
    max-height: var(--modal-sheet-bottom-max-height);
    top: auto;
    transform: translateY(100%);
}
.modal--position-bottom.modal--is-visible {
    transform: translateY(0);
}
.modal--position-bottom.modal--is-leaving {
    transform: translateY(100%);
}

.modal--position-center.modal--size-auto {
    width: var(--modal-center-size-auto-width);
    max-width: var(--modal-center-size-auto-max-width);
}
.modal--position-center.modal--size-small {
    width: var(--modal-center-size-small-width);
    max-width: var(--modal-center-size-auto-max-width);
}
.modal--position-center.modal--size-medium {
    width: var(--modal-center-size-medium-width);
    max-width: var(--modal-center-size-auto-max-width);
}
.modal--position-center.modal--size-large {
    width: var(--modal-center-size-large-width);
    max-width: var(--modal-center-size-auto-max-width);
}

.modal--position-right.modal--size-auto,
.modal--position-left.modal--size-auto {
    width: var(--modal-drawer-size-auto-width);
    max-width: var(--modal-drawer-size-auto-max-width);
}
.modal--position-right.modal--size-small,
.modal--position-left.modal--size-small {
    width: var(--modal-drawer-size-small-width);
    max-width: var(--modal-drawer-size-auto-max-width);
}
.modal--position-right.modal--size-medium,
.modal--position-left.modal--size-medium {
    width: var(--modal-drawer-size-medium-width);
    max-width: var(--modal-drawer-size-auto-max-width);
}
.modal--position-right.modal--size-large,
.modal--position-left.modal--size-large {
    width: var(--modal-drawer-size-large-width);
    max-width: var(--modal-drawer-size-auto-max-width);
}

.modal--position-top.modal--size-auto,
.modal--position-bottom.modal--size-auto {
    height: var(--modal-sheet-size-auto-height);
}
.modal--position-top.modal--size-small,
.modal--position-bottom.modal--size-small {
    height: var(--modal-sheet-size-small-height);
    max-height: var(--modal-sheet-size-small-height);
}
.modal--position-top.modal--size-medium,
.modal--position-bottom.modal--size-medium {
    height: var(--modal-sheet-size-medium-height);
    max-height: var(--modal-sheet-size-medium-height);
}
.modal--position-top.modal--size-large,
.modal--position-bottom.modal--size-large {
    height: var(--modal-sheet-size-large-height);
    max-height: var(--modal-sheet-size-large-height);
}

.modal--size-fullscreen {
    width: var(--modal-fullscreen-width);
    height: var(--modal-fullscreen-height);
    max-height: var(--modal-fullscreen-height);
    top: 0;
    left: 0;
    right: auto;
    bottom: auto;
    transform: none !important;
    border-radius: var(--modal-fullscreen-border-radius);
}

.modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--modal-header-padding);
    border-bottom: var(--modal-header-border-bottom-width) solid var(--color-border-default);
    flex-shrink: var(--modal-header-flex-shrink);
}
.modal__header--draggable {
    cursor: move;
}

.modal__nav {
    display: flex;
    align-items: center;
}

.modal__title {
    font-size: var(--modal-title-font-size);
    font-weight: var(--modal-title-font-weight);
    margin: var(--modal-title-margin);
    border-bottom: none;
    padding-bottom: var(--modal-title-padding-bottom);
    color: var(--color-text-bright);
}

.modal__back-button {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: var(--modal-nav-button-font-size);
    margin-right: var(--modal-back-button-margin-right);
    padding: var(--modal-nav-button-padding) var(--modal-back-button-padding-x);
    line-height: var(--modal-nav-button-line-height);
    color: var(--color-text-secondary);
    transition: color 0.2s;
}
.modal__back-button:hover {
    color: var(--color-text-primary);
}

.modal__close-button {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: var(--modal-nav-button-font-size);
    padding: var(--modal-nav-button-padding);
    line-height: var(--modal-nav-button-line-height);
    color: var(--color-text-secondary);
    font-weight: var(--modal-close-button-font-weight);
    transition: color 0.2s;
}
.modal__close-button:hover {
    color: var(--color-text-primary);
}

.modal__content {
    padding: var(--modal-content-padding);
    flex-grow: var(--modal-content-flex-grow);
    overflow-y: auto;
    overflow-x: hidden;
    user-select: auto;
    background-color: var(--color-bg-modal-content);
}

.modal__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--modal-footer-padding);
    border-top: var(--modal-footer-border-top-width) solid var(--color-border-default);
    background-color: var(--color-bg-modal-footer);
    flex-shrink: var(--modal-footer-flex-shrink);
}

.modal__footer-text {
    font-size: var(--modal-footer-text-font-size);
    color: var(--color-text-primary);
    opacity: var(--modal-footer-text-opacity);
}

.modal__footer-buttons {
    display: flex;
    gap: var(--modal-footer-buttons-gap);
}

.modal__button {
    border: none;
    padding: var(--modal-button-padding);
    border-radius: var(--border-radius-base);
    cursor: pointer;
    font-size: var(--modal-button-font-size);
    font-weight: var(--modal-button-font-weight);
    margin: var(--modal-button-margin);
    transition: background-color 0.2s;
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}
.modal__button:hover {
    background-color: var(--surface-level-4);
}

.modal__button--primary {
    background-color: var(--color-accent-primary);
    color: var(--color-text-on-accent);
}
.modal__button--primary:hover {
    background-color: var(--color-accent-hover);
}

.modal__button--secondary {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}
.modal__button--secondary:hover {
    background-color: var(--surface-level-4);
}

.modal__prompt {
    display: flex;
    flex-direction: column;
}
.modal__prompt-label {
    margin-bottom: var(--modal-prompt-label-margin-bottom);
}
.modal__prompt-input {
    padding: var(--modal-prompt-input-padding);
    border: var(--modal-prompt-input-border-width) solid var(--color-border-default);
    background-color: var(--color-bg-app);
    color: var(--color-text-primary);
    border-radius: var(--border-radius-sm);
    font-size: var(--modal-prompt-input-font-size);
    user-select: auto;
}
.modal__prompt-input:focus {
    outline: 2px solid var(--color-accent-primary);
    border-color: transparent;
}

.modal__spinner {
    border: var(--modal-spinner-border-width) solid var(--color-bg-hover);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    width: var(--modal-spinner-size);
    height: var(--modal-spinner-size);
    animation: modal-spin 1s linear infinite;
    margin: var(--modal-spinner-margin);
}
@keyframes modal-spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.modal-scroll-lock {
    overflow: hidden;
}

@media (max-width: 640px) {
    .modal--position-right.modal--size-small,
    .modal--position-left.modal--size-small,
    .modal--position-right.modal--size-medium,
    .modal--position-left.modal--size-medium {
        width: var(--modal-responsive-drawer-width);
    }

    .modal--position-center.modal--size-small,
    .modal--position-center.modal--size-medium {
        width: var(--modal-responsive-center-width);
        max-width: var(--modal-responsive-center-width);
    }

    .modal__content {
        padding: var(--modal-padding-small);
    }
    .modal__header,
    .modal__footer {
        padding: var(--modal-responsive-header-footer-padding);
    }
}