/**
 * Modal 컴포넌트 스타일
 *
 * Material Design 기반 모달/다이얼로그 스타일
 * - 테마 변수 사용
 * - 애니메이션 효과
 * - 반응형 대응
 *
 * @author Claude (AI Agent)
 * @date 2025-12-13
 */

/* ==================== 백드롭 ==================== */

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: auto;
}

.modal-backdrop.open {
    opacity: 1;
}

/* ==================== 모달 컨테이너 ==================== */

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 320px;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    opacity: 0;
    transition: opacity var(--transition-base), transform var(--transition-base);
    outline: none;
}

.modal.open {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

/* ==================== 모달 헤더 ==================== */

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    cursor: move;
    user-select: none;
    background-color: var(--color-primary);
    color: var(--color-on-primary);
}

.modal__title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-on-primary);
    margin: 0;
    line-height: 1.4;
}

.modal__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: none;
    border: none;
    border-radius: var(--radius-full);
    color: var(--color-on-primary);
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast);
    margin-left: var(--spacing-md);
    flex-shrink: 0;
    opacity: 0.8;
}

.modal__close:hover {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.1);
}

.modal__close:focus {
    outline: 2px solid var(--color-on-primary);
    outline-offset: 2px;
}

/* ==================== 모달 본문 ==================== */

.modal__body {
    padding: var(--spacing-md);
    overflow-y: auto;
    flex: 1;
    color: var(--color-text-primary);
}

.modal__message {
    margin: 0;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* ==================== 모달 푸터 ==================== */

.modal__footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

/* ==================== 모달 버튼 ==================== */

.modal__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    height: 24px;
    padding: 0 var(--spacing-lg);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-align: center;
    white-space: nowrap;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: transparent;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: background-color var(--transition-fast),
                border-color var(--transition-fast),
                color var(--transition-fast);
}

.modal__btn:hover {
    background-color: rgba(var(--color-primary-rgb), 0.08);
    border-color: var(--color-primary);
}

.modal__btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.modal__btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Primary 버튼 */
.modal__btn--primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-on-primary);
}

.modal__btn--primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

/* Danger 버튼 */
.modal__btn--danger {
    background-color: var(--color-error);
    border-color: var(--color-error);
    color: #FFFFFF;
}

.modal__btn--danger:hover {
    background-color: #C62828;
    border-color: #C62828;
}

/* ==================== 모달 타입별 스타일 ==================== */

/* Alert 모달 */
.modal--alert .modal__body {
    text-align: center;
    padding: var(--spacing-md) var(--spacing-lg);
}

.modal--alert .modal__footer {
    justify-content: center;
}

/* Confirm 모달 */
.modal--confirm .modal__body {
    text-align: center;
    padding: var(--spacing-md) var(--spacing-lg);
}

.modal--confirm .modal__footer {
    justify-content: center;
}

/* ==================== 모달 크기 변형 ==================== */

.modal--sm {
    min-width: 280px;
    max-width: 360px;
}

.modal--lg {
    min-width: 480px;
    max-width: 720px;
}

.modal--xl {
    min-width: 600px;
    max-width: 960px;
}

.modal--full {
    min-width: calc(100vw - 40px);
    min-height: calc(100vh - 40px);
    max-width: calc(100vw - 40px);
    max-height: calc(100vh - 40px);
}

/* ==================== 모달 위치 변형 ==================== */

/* 상단 정렬 모달 */
.modal--top {
    top: var(--modal-top-offset, 60px);
    transform: translate(-50%, 0) scale(0.95);
    max-height: calc(100vh - var(--modal-top-offset, 60px) - 60px);
}

.modal--top.open {
    transform: translate(-50%, 0) scale(1);
}

/* ==================== 모달 스타일 변형 ==================== */

/* Body padding 없음 */
.modal--no-padding .modal__body {
    padding: 0;
}

/* ==================== 헤더 도움말 텍스트 ==================== */

.modal__help-text {
    flex: 1;
    text-align: right;
    font-size: var(--font-size-sm);
    color: var(--color-on-primary);
    opacity: 0.9;
    margin-right: var(--spacing-md);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ==================== 상태 메시지 영역 ==================== */

.modal__status {
    display: none;
    padding: 10px 16px;
    background-color: var(--color-primary);
    color: var(--color-on-primary);
    font-size: var(--font-size-sm);
}

.modal__status:not(:empty) {
    display: block;
}

.modal__status--success {
    background-color: var(--color-success);
    color: #fff;
}

.modal__status--error {
    background-color: var(--color-error);
    color: #fff;
}

.modal__status--info {
    background-color: var(--color-primary);
    color: var(--color-on-primary);
}

/* ==================== 폼 요소 스타일 ==================== */

.modal__form-group {
    margin-bottom: var(--spacing-lg);
}

.modal__form-group:last-child {
    margin-bottom: 0;
}

.modal__label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.modal__input {
    width: 100%;
    height: 40px;
    padding: 0 var(--spacing-md);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.modal__input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

.modal__textarea {
    width: 100%;
    min-height: 100px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    resize: vertical;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.modal__textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

/* ==================== 반응형 ==================== */

@media (max-width: 576px) {
    .modal {
        min-width: calc(100vw - 32px);
        max-width: calc(100vw - 32px);
        margin: var(--spacing-md);
    }

    .modal__header {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .modal__body {
        padding: var(--spacing-sm);
    }

    .modal__footer {
        padding: var(--spacing-xs) var(--spacing-sm);
        flex-direction: column-reverse;
    }

    .modal__btn {
        width: 100%;
    }
}

/* ==================== 다크 모드 ==================== */

[data-mode="dark"] .modal-backdrop {
    background-color: rgba(0, 0, 0, 0.7);
}

[data-mode="dark"] .modal {
    background-color: var(--color-surface);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

[data-mode="dark"] .modal__close:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* ==================== 스크롤바 (모달 본문) ==================== */

.modal__body::-webkit-scrollbar {
    width: 8px;
}

.modal__body::-webkit-scrollbar-track {
    background-color: transparent;
}

.modal__body::-webkit-scrollbar-thumb {
    background-color: var(--color-outline);
    border-radius: 4px;
}

.modal__body::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-primary);
}