:root {
    color-scheme: light;
    font-family: "Pretendard GOV", -apple-system, BlinkMacSystemFont, "Segoe UI", "Malgun Gothic", sans-serif;
    font-synthesis: none;
}

* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
    background: #e7ebf1;
    color: #111827;
}

button,
input,
a {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
input:focus-visible,
a:focus-visible,
.program-viewer-scroll:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.35);
    outline-offset: 1px;
}

[hidden] {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

.program-viewer {
    display: flex;
    width: 100%;
    height: 100%;
    min-height: 0;
    flex-direction: column;
}

.program-viewer-toolbar {
    position: relative;
    z-index: 5;
    display: flex;
    min-height: 58px;
    flex: 0 0 auto;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border-bottom: 1px solid #d4d9e2;
    background: rgba(255, 255, 255, 0.97);
    padding: 8px 12px 8px 16px;
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.08);
}

.program-viewer-heading {
    display: grid;
    min-width: 0;
    gap: 2px;
}

.program-viewer-heading strong {
    overflow: hidden;
    font-size: 15px;
    line-height: 1.3;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.program-viewer-heading span {
    overflow: hidden;
    color: #6b7280;
    font-size: 12px;
    line-height: 1.3;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.program-viewer-controls,
.program-viewer-control-group {
    display: flex;
    align-items: center;
}

.program-viewer-controls {
    gap: 8px;
}

.is-embedded-viewer .program-viewer-heading {
    display: none;
}

.is-embedded-viewer .program-viewer-toolbar {
    justify-content: flex-end;
}

.program-viewer-control-group {
    min-height: 40px;
    overflow: hidden;
    border: 1px solid #d8dee8;
    border-radius: 7px;
    background: #fff;
}

.program-viewer-icon-button,
.program-viewer-zoom-label {
    min-width: 40px;
    height: 40px;
    border: 0;
    border-right: 1px solid #e5e7eb;
    background: #fff;
    color: #1f2937;
    cursor: pointer;
    font-weight: 700;
}

.program-viewer-control-group > :last-child {
    border-right: 0;
}

.program-viewer-icon-button {
    font-size: 23px;
    line-height: 1;
}

.program-viewer-zoom-label {
    min-width: 88px;
    padding: 0 10px;
    font-size: 12px;
}

.program-viewer-icon-button:hover:not(:disabled),
.program-viewer-zoom-label:hover:not(:disabled) {
    background: #eff6ff;
    color: #1d4ed8;
}

.program-viewer-icon-button:disabled,
.program-viewer-zoom-label:disabled {
    background: #f8fafc;
    color: #a5adba;
    cursor: default;
}

.program-viewer-page-field {
    display: flex;
    height: 40px;
    align-items: center;
    gap: 5px;
    border-right: 1px solid #e5e7eb;
    color: #4b5563;
    padding: 0 9px;
    font-size: 13px;
}

.program-viewer-page-field input {
    width: 42px;
    height: 28px;
    border: 1px solid #d8dee8;
    border-radius: 5px;
    background: #fff;
    padding: 0 4px;
    text-align: center;
    -moz-appearance: textfield;
}

.program-viewer-page-field input::-webkit-inner-spin-button,
.program-viewer-page-field input::-webkit-outer-spin-button {
    margin: 0;
    -webkit-appearance: none;
}

.program-viewer-download {
    display: inline-flex;
    min-height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 7px;
    background: #2563eb;
    color: #fff;
    padding: 0 14px;
    text-decoration: none;
    white-space: nowrap;
    font-size: 13px;
    font-weight: 700;
}

.program-viewer-download:hover {
    background: #1d4ed8;
}

.program-viewer-scroll {
    position: relative;
    min-height: 0;
    flex: 1 1 auto;
    overflow: auto;
    overscroll-behavior: contain;
    background: #e7ebf1;
    -webkit-overflow-scrolling: touch;
}

.program-viewer-pages {
    display: flex;
    width: max-content;
    min-width: 100%;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 20px;
}

.program-viewer-page {
    position: relative;
    flex: 0 0 auto;
    scroll-margin-top: 20px;
}

.program-viewer-page-label {
    position: absolute;
    z-index: 2;
    top: 8px;
    right: 8px;
    border-radius: 999px;
    background: rgba(17, 24, 39, 0.72);
    color: #fff;
    padding: 4px 8px;
    pointer-events: none;
    font-size: 11px;
    line-height: 1;
}

.program-viewer-canvas-wrap {
    position: relative;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 5px 20px rgba(15, 23, 42, 0.2);
}

.program-viewer-canvas-wrap::before {
    position: absolute;
    inset: 0;
    z-index: 2;
    display: grid;
    place-items: center;
    background: #fff;
    color: #8a94a3;
    content: "페이지를 준비하는 중입니다.";
    font-size: 13px;
}

.program-viewer-page.is-rendered .program-viewer-canvas-wrap::before {
    display: none;
}

.program-viewer-canvas-wrap canvas {
    position: relative;
    z-index: 1;
    display: block;
    background: #fff;
}

.program-viewer-loading,
.program-viewer-error {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 24px;
    text-align: center;
}

.program-viewer-loading {
    gap: 12px;
    color: #4b5563;
    font-size: 14px;
}

.program-viewer-loading p,
.program-viewer-error p {
    margin: 0;
}

.program-viewer-spinner {
    width: 34px;
    height: 34px;
    border: 3px solid #cbd5e1;
    border-top-color: #2563eb;
    border-radius: 50%;
    animation: program-viewer-spin 0.8s linear infinite;
}

.program-viewer-error {
    gap: 10px;
    background: #f8fafc;
    color: #4b5563;
}

.program-viewer-error strong {
    color: #111827;
    font-size: 18px;
}

.program-viewer-error div {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
}

.program-viewer-error button,
.program-viewer-error a {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    border: 1px solid #cbd5e1;
    border-radius: 7px;
    background: #fff;
    color: #1f2937;
    padding: 0 15px;
    cursor: pointer;
    text-decoration: none;
    font-weight: 700;
}

.program-viewer-error button {
    border-color: #2563eb;
    background: #2563eb;
    color: #fff;
}

.program-viewer-image {
    min-width: 100%;
    min-height: 100%;
    padding: 20px;
    text-align: center;
}

.program-viewer-image img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
    background: #fff;
    box-shadow: 0 5px 20px rgba(15, 23, 42, 0.2);
}

@keyframes program-viewer-spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 760px) {
    .program-viewer-toolbar {
        display: grid;
        min-height: 0;
        gap: 6px;
        padding: max(7px, env(safe-area-inset-top)) 8px 7px;
    }

    .program-viewer-heading {
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: center;
        gap: 8px;
        padding: 0 2px;
    }

    .is-embedded-viewer .program-viewer-toolbar {
        display: block;
        padding-top: 7px;
    }

    .program-viewer-heading strong {
        font-size: 14px;
    }

    .program-viewer-heading span {
        font-size: 11px;
        text-align: right;
    }

    .program-viewer-controls {
        display: grid;
        grid-template-columns: auto minmax(0, 1fr) auto;
        gap: 6px;
    }

    .program-viewer-control-group {
        min-width: 0;
        min-height: 44px;
    }

    .program-viewer-icon-button,
    .program-viewer-zoom-label {
        min-width: 42px;
        height: 44px;
    }

    .program-viewer-zoom-label {
        min-width: 64px;
        flex: 1 1 auto;
        padding: 0 6px;
        font-size: 11px;
    }

    .program-viewer-page-field {
        height: 44px;
        padding: 0 6px;
    }

    .program-viewer-page-field input {
        width: 35px;
    }

    .program-viewer-download {
        min-height: 46px;
        padding: 0 10px;
        font-size: 12px;
    }

    .program-viewer-pages {
        gap: 12px;
        padding: 8px;
    }

    .program-viewer-page {
        scroll-margin-top: 8px;
    }

    .program-viewer-page-label {
        top: 6px;
        right: 6px;
    }

    .program-viewer-image {
        padding: 8px;
    }
}

@media (max-width: 390px) {
    .program-viewer-heading span {
        display: none;
    }

    .program-viewer-heading {
        grid-template-columns: 1fr;
    }

    .program-viewer-controls {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
    }

    .program-viewer-icon-button {
        min-width: 38px;
    }

    .program-viewer-download {
        width: 48px;
        overflow: hidden;
        padding: 0 7px;
        text-align: center;
        white-space: normal;
        line-height: 1.15;
    }
}

@media (max-width: 360px) {
    .program-viewer-controls {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    }

    .program-viewer-download {
        grid-column: 1 / -1;
        width: 100%;
        min-height: 44px;
        white-space: nowrap;
    }
}

@media (prefers-reduced-motion: reduce) {
    .program-viewer-spinner {
        animation-duration: 1.8s;
    }

    * {
        scroll-behavior: auto !important;
    }
}