/* naonax\static\css\utility\bgremove.css */
:root {
    --br-bg: #f4f7fb;
    --br-card: #ffffff;
    --br-line: #d7dfec;
    --br-text: #18212f;
    --br-sub: #627187;
    --br-primary: #2a59ce;
    --br-primary-dark: #193d96;
    --br-soft: #eef4ff;
    --br-shadow: 0 18px 34px rgba(22, 41, 87, 0.08);
    --br-success: #14a44d;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: linear-gradient(180deg, #f8fafe 0%, #eef3fb 100%);
    color: var(--br-text);
    font-family: 'Pretendard', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
}

.br-shell {
    width: min(1320px, calc(100% - 28px));
    margin: 0 auto;
}

.br-topbar {
    padding-top: 18px;
}

.br-topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--br-line);
    border-radius: 18px;
    box-shadow: 0 10px 24px rgba(22, 41, 87, 0.06);
}

.br-topbar-left,
.br-topbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.br-top-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0 14px;
    border-radius: 12px;
    background: var(--br-soft);
    border: 1px solid #d6e3ff;
    color: var(--br-primary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
}

.br-top-btn {
    font-family: inherit;
    cursor: pointer;
}

.br-btn-top {
    min-width: 144px;
    height: 38px;
    font-size: 13px;
}

.br-hero {
    padding: 26px 0 18px;
}

.br-eyebrow {
    margin: 0 0 10px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--br-primary);
}

.br-hero h1 {
    margin: 0;
    font-size: 36px;
    line-height: 1.22;
}

.br-hero-copy > p {
    margin: 14px 0 0;
    max-width: 760px;
    font-size: 16px;
    line-height: 1.75;
    color: var(--br-sub);
}

.br-hero-note {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 18px;
}

.br-hero-note span {
    display: inline-flex;
    align-items: center;
    height: 32px;
    padding: 0 12px;
    background: var(--br-soft);
    border: 1px solid #d6e3ff;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    color: var(--br-primary);
}

.br-main {
    padding: 8px 0 52px;
}

.br-panel {
    background: var(--br-card);
    border: 1px solid var(--br-line);
    border-radius: 24px;
    box-shadow: var(--br-shadow);
}

.br-panel-head {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 12px;
    margin-bottom: 16px;
}

.br-panel-head.compact {
    margin-bottom: 14px;
}

.br-panel-head h2 {
    margin: 0;
    font-size: 22px;
}

.br-panel-head p {
    margin: 0;
    font-size: 14px;
    color: var(--br-sub);
}

.br-setting-panel {
    max-width: 1120px;
    margin: 0 auto 16px;
    padding: 20px 22px;
}

.br-setting-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr minmax(280px, 360px);
    gap: 14px;
    align-items: start;
}

.br-setting-item,
.br-setting-action {
    border: 1px solid var(--br-line);
    border-radius: 18px;
    background: #fbfcff;
    padding: 16px;
}

.br-setting-item h3 {
    margin: 0 0 10px;
    font-size: 15px;
}

.br-inline-radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.br-inline-radio-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 40px;
    padding: 0 14px;
    border: 1px solid #dbe4f5;
    border-radius: 999px;
    background: #fff;
    font-size: 14px;
    color: var(--br-text);
}

.br-status-box {
    padding: 14px 16px;
    border: 1px solid #dce5f8;
    border-radius: 16px;
    background: #f8fbff;
}

.br-status-box.compact {
    margin: 0;
}

.br-status-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--br-primary);
}

.br-status-box p {
    margin: 8px 0 0;
    font-size: 14px;
    line-height: 1.7;
}

.br-top-action-row {
    display: flex;
    gap: 10px;
    margin-top: 12px;
}

.br-preview-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    align-items: start;
}

.br-preview-panel,
.br-result-panel,
.br-guide-panel {
    padding: 22px;
}

.br-preview-wrap {
    min-height: 500px;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
    border-radius: 18px;
    background: #f8fafc;
    border: 1px solid var(--br-line);
    overflow: hidden;
    position: relative;
}

.br-upload-preview-wrap {
    border: 1.5px dashed #b8caea;
    background: linear-gradient(180deg, #fbfdff 0%, #f3f7ff 100%);
    transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.br-upload-preview-wrap.is-dragover,
.br-upload-preview-wrap:hover {
    border-color: var(--br-primary);
    box-shadow: 0 16px 28px rgba(42, 89, 206, 0.10);
    transform: translateY(-1px);
}

.br-preview-wrap.checker {
    background-image:
        linear-gradient(45deg, #eef2f8 25%, transparent 25%),
        linear-gradient(-45deg, #eef2f8 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #eef2f8 75%),
        linear-gradient(-45deg, transparent 75%, #eef2f8 75%);
    background-size: 24px 24px;
    background-position: 0 0, 0 12px, 12px -12px, -12px 0;
}

.br-result-preview-wrap {
    border-width: 2px;
}

.br-result-panel.is-done .br-result-preview-wrap {
    border-color: rgba(20, 164, 77, 0.55);
    box-shadow: 0 0 0 6px rgba(20, 164, 77, 0.08);
}

.br-preview-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 10px 26px rgba(18, 34, 73, 0.14);
}

.br-empty {
    color: var(--br-sub);
    text-align: center;
    font-size: 15px;
    line-height: 1.7;
}

.br-panel-meta {
    margin-top: 12px;
}

.br-bottom-meta {
    min-height: 24px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--br-text);
    word-break: break-all;
}

.br-bottom-guide {
    margin-top: 4px;
    font-size: 13px;
    color: var(--br-sub);
}

.br-panel-action {
    margin-top: 14px;
}

.br-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 152px;
    height: 50px;
    padding: 0 18px;
    border: 0;
    border-radius: 14px;
    text-decoration: none;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
}

.br-btn-wide {
    width: 100%;
}

.br-btn.primary {
    background: var(--br-primary);
    color: #fff;
}

.br-btn.primary:hover {
    background: var(--br-primary-dark);
}

.br-btn.line {
    background: #fff;
    color: var(--br-text);
    border: 1px solid var(--br-line);
}

.br-btn:disabled {
    opacity: 0.6;
    cursor: wait;
}

.br-result-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: rgba(255, 255, 255, 0.84);
    backdrop-filter: blur(2px);
    z-index: 2;
}

.br-result-loading-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--br-primary-dark);
    text-align: center;
    padding: 0 20px;
    line-height: 1.6;
}

.br-spinner {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 4px solid #d8e4ff;
    border-top-color: var(--br-primary);
    animation: br-spin 0.9s linear infinite;
}

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

.br-guide-panel {
    margin-top: 16px;
}

.br-guide-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.br-guide-grid article {
    border: 1px solid var(--br-line);
    border-radius: 18px;
    background: #fbfcff;
    padding: 18px;
}

.br-guide-grid h3 {
    margin: 0 0 12px;
    font-size: 16px;
}

.br-guide-grid ul {
    margin: 0;
    padding-left: 18px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--br-sub);
}

@media (max-width: 1180px) {
    .br-setting-grid {
        grid-template-columns: 1fr 1fr;
    }

    .br-setting-action {
        grid-column: 1 / -1;
    }
}

@media (max-width: 920px) {
    .br-shell {
        width: min(100% - 20px, 100%);
    }

    .br-topbar-inner {
        flex-direction: column;
        align-items: stretch;
    }

    .br-topbar-left,
    .br-topbar-right {
        width: 100%;
    }

    .br-topbar-right .br-btn,
    .br-topbar-left .br-top-link {
        width: 100%;
    }

    .br-hero {
        padding-top: 24px;
    }

    .br-hero h1 {
        font-size: 30px;
    }

    .br-setting-grid,
    .br-preview-grid,
    .br-guide-grid {
        grid-template-columns: 1fr;
    }

    .br-panel-head {
        flex-direction: column;
        align-items: start;
    }

    .br-top-action-row {
        flex-direction: column;
    }

    .br-top-action-row .br-btn {
        width: 100%;
    }

    .br-preview-wrap {
        min-height: 320px;
        height: 320px;
    }
}