.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(4, 7, 13, 0.82);
    background-image: repeating-linear-gradient(
        0deg,
        rgba(255, 255, 255, 0.04) 0,
        rgba(255, 255, 255, 0.04) 0.2rem,
        transparent 0.2rem,
        transparent 0.6rem
    );
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 200;
    opacity: 0;
    transition: opacity 0.22s ease;
    overflow-y: auto; /* allow vertical scrolling when content exceeds viewport */
    overscroll-behavior: contain; /* prevent background scroll chaining on mobile */
}
.modal-overlay.active {
    display: flex;
    opacity: 1;
    animation: modal-overlay-scan 520ms ease-out;
}
.modal-content {
    background: linear-gradient(180deg, var(--surface) 0%, #162238 100%);
    padding: 2rem var(--space-xl);
    text-align: center;
    border: var(--pixel-border);
    box-shadow: var(--shadow-hard);
    transform: translateY(18px) scale(0.9);
    transition: transform 0.28s cubic-bezier(0.18, 0.9, 0.2, 1.22),
        box-shadow 0.28s ease;
    width: 90%;
    max-width: 600px;
    border-radius: var(--radius-lg);
    max-height: 90vh; /* keep inside viewport on mobile */
    overflow-y: auto; /* enable internal scroll if needed */

    /* 커스텀 스크롤바 스타일 */
    scrollbar-width: thin; /* Firefox */
    scrollbar-color: var(--accent) rgba(255, 255, 255, 0.1); /* Firefox */
}

/* Webkit 기반 브라우저 (Chrome, Safari, Edge) 스크롤바 커스터마이징 */
.modal-content::-webkit-scrollbar {
    width: 12px;
}

.modal-content::-webkit-scrollbar-track {
    background: var(--surface-muted);
    border-radius: 0;
    border: 0.2rem solid var(--border-strong);
}

.modal-content::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 0;
    border: 0.2rem solid var(--border-strong);
    transition: none;
}

.modal-content::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

.modal-content::-webkit-scrollbar-thumb:active {
    background: var(--primary);
}

.modal-overlay.active .modal-content {
    transform: translateY(0) scale(1);
    animation: modal-content-pop 460ms cubic-bezier(0.18, 0.9, 0.2, 1.18);
}

#repair-notice-modal {
    padding: var(--space-md);
}

#repair-notice-modal .repair-notice-content {
    width: min(92%, 52rem);
    padding: var(--space-lg);
    overflow-x: hidden;
}

.repair-notice-image {
    display: block;
    width: min(100%, 42rem);
    height: auto;
    aspect-ratio: 1;
    margin: 0 auto var(--space-lg);
    border: var(--pixel-border);
    object-fit: cover;
}

#repair-notice-title {
    margin-bottom: var(--space-sm);
    font-size: 2.4rem;
    line-height: 1.35;
}

#repair-notice-description {
    max-width: 42rem;
    margin: 0 auto var(--space-lg);
    color: var(--text-muted);
    font-size: 1.6rem;
    line-height: 1.65;
    word-break: keep-all;
}

#repair-notice-admin-modal {
    z-index: 240;
    padding: var(--space-md);
}

#site-migration-modal {
    z-index: 260;
    padding: var(--space-md);
}

#site-migration-modal .site-migration-content {
    width: min(100%, 42rem);
    padding: var(--space-lg);
}

#site-migration-title {
    margin-bottom: var(--space-md);
    font-size: 2.4rem;
    word-break: keep-all;
}

#site-migration-description {
    margin-bottom: var(--space-lg);
    color: var(--text-muted);
    font-size: 1.6rem;
    line-height: 1.65;
    word-break: keep-all;
}

#site-migration-description p + p {
    margin-top: var(--space-sm);
}

.site-migration-copy-line {
    display: block;
}

.site-migration-address {
    padding: var(--space-sm);
    border: 2px solid var(--border-soft);
    background: var(--surface-muted);
    font-size: 1.4rem;
}

.site-migration-address a {
    color: var(--text-light);
    font-family: var(--font-mono);
    text-decoration: underline;
    text-underline-offset: 0.3rem;
}

.site-migration-address a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 0.2rem;
}

.site-migration-status {
    margin-bottom: var(--space-md);
    color: var(--revealed);
    font-size: 1.4rem;
    line-height: 1.5;
    text-align: center;
    word-break: keep-all;
}

.site-migration-status:empty {
    display: none;
}

.site-migration-actions {
    display: grid;
    gap: var(--space-sm);
}

.site-migration-transfer {
    text-align: center;
    text-decoration: none;
}

.site-migration-transfer[aria-disabled='true'] {
    pointer-events: none;
    cursor: wait;
    filter: brightness(0.75);
    transform: none;
}

.site-migration-dismiss {
    background: var(--surface-muted);
}

#repair-notice-admin-modal .repair-notice-admin-content {
    width: min(100%, 42rem);
    padding: var(--space-lg);
    text-align: left;
}

.repair-notice-admin-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

#repair-notice-admin-modal .repair-notice-admin-header h2 {
    margin: 0;
    font-size: 2.4rem;
    word-break: keep-all;
}

#repair-notice-admin-modal .repair-notice-admin-header .btn {
    flex: 0 0 auto;
}

#repair-notice-admin-description {
    margin-bottom: var(--space-lg);
    color: var(--text-muted);
    font-size: 1.4rem;
    line-height: 1.6;
    word-break: keep-all;
}

.repair-notice-admin-password-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-size: 1.4rem;
}

.repair-notice-admin-password {
    width: 100%;
    margin-bottom: var(--space-lg);
    padding: var(--space-sm);
    border: var(--pixel-border);
    background: var(--surface-muted);
    color: var(--text-primary);
    font: inherit;
}

.repair-notice-admin-status-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: var(--surface-muted);
    border: var(--pixel-border);
    font-size: 1.6rem;
}

.repair-notice-admin-action {
    width: 100%;
}

#repair-notice-admin-modal .repair-notice-admin-feedback {
    margin: var(--space-md) 0 0;
    color: var(--text-muted);
    font-size: 1.4rem;
    line-height: 1.6;
    word-break: keep-all;
}

@media (max-width: 480px) {
    #repair-notice-modal {
        padding: var(--space-sm);
    }

    #repair-notice-modal .repair-notice-content {
        width: 100%;
        padding: var(--space-md);
    }

    #repair-notice-title {
        font-size: 2rem;
    }

    #repair-notice-description {
        font-size: 1.4rem;
    }
}
.modal-content h2 {
    color: var(--text-light);
    font-size: 3rem;
    margin-bottom: 1.2rem;
    margin-top: 0;
    background: none;
    border: none;
    padding: 0;
    font-family: var(--font-display);
}
.modal-content p {
    font-family: var(--font-base);
    color: var(--text-light);
    font-size: 1.8rem;
    margin-bottom: 2rem;
}

#guide-modal .modal-content {
    text-align: left;
    padding: 3rem 3.5rem;
}
#guide-modal h3 {
    text-align: center;
    font-family: var(--font-display);
    color: var(--correct);
    margin-bottom: 3rem;
    font-size: 2.4rem;
}
.guide-steps {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}
.guide-step {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px dotted var(--secondary);
}
.guide-steps .guide-step:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.guide-label {
    font-family: var(--font-display);
    color: var(--primary);
    font-size: 1.4rem;
    flex-shrink: 0;
    padding-top: 2px;
}
.guide-text {
    font-size: 1.6rem;
    line-height: 1.7;
}
.guide-text strong {
    color: var(--revealed);
    font-weight: 700;
}
#guide-modal .tip {
    font-size: 1.4rem;
    text-align: center;
    color: var(--text-dark);
    margin-top: 3rem;
    background: var(--secondary);
    padding: 1rem;
    border: 0.2rem solid var(--border-strong);
    border-radius: 0;
    box-shadow: 0.3rem 0.3rem 0 var(--border-strong);
}
#close-guide-btn {
    display: block;
    margin: 2.5rem auto 0;
    font-family: var(--font-display);
}
#result-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.8rem;
    margin-bottom: 2rem;
    flex: 1;
    justify-content: center;
}
#result-details {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}
#result-info p {
    font-size: 1.6rem;
    margin: 0;
    background: var(--surface-muted);
    color: var(--text-light);
    padding: 0.5rem 1rem;
    border: 0.2rem solid var(--border-strong);
    box-shadow: 0.2rem 0.2rem 0 var(--border-strong);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    white-space: nowrap;
}
#result-info .label {
    font-weight: bold;
    margin-right: 0.5rem;
}
.progress-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    width: 100%;
    max-width: 400px;
}
.progress-bar {
    flex: 1;
    height: 20px;
    background: var(--bg-dark);
    border: 0.2rem solid var(--border-strong);
    box-shadow: 0.15rem 0.15rem 0 var(--border-strong);
    border-radius: 0;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(
        90deg,
        var(--correct) 0%,
        var(--accent) 58%,
        var(--accent-cool) 100%
    );
    background-size: 180% 100%;
    transition: width 0.45s steps(12, end);
    animation: progress-fill-energy 1.1s linear infinite;
}
#result-percentage {
    font-size: 1.6rem;
    min-width: 3rem;
    text-align: right;
    font-family: var(--font-display);
}

/* Result modal: force all content to use display font (Galmuri9) */
#progress-modal .modal-content,
#progress-modal .modal-content * {
    font-family: var(--font-display) !important;
}

.result-buttons {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

.result-buttons .btn {
    width: 12rem;
    font-family: var(--font-display);
}

@keyframes modal-overlay-scan {
    0% {
        background-position: 0 -2rem;
    }
    100% {
        background-position: 0 0;
    }
}

@keyframes modal-content-pop {
    0% {
        transform: translateY(18px) scale(0.9);
    }
    54% {
        transform: translateY(-4px) scale(1.025);
    }
    100% {
        transform: translateY(0) scale(1);
    }
}

@keyframes progress-fill-energy {
    0% {
        background-position: 0% 50%;
    }
    100% {
        background-position: 180% 50%;
    }
}