:root {
    /* [Color System] */
    --color-primary-dark: #1e293b; /* Slate 800 */
    --color-primary: #334155; /* Slate 700 */
    --color-secondary: #475569; /* Slate 600 */
    --color-accent: #2563eb; /* Royal Blue */
    --color-accent-light: #eff6ff; /* Blue 50 */
    --color-danger: #be123c; /* Rose 700 */
    --color-danger-bg: #fff1f2; /* Rose 50 */
    --color-warning-bg: #fff7ed; /* Orange 50 */
    --color-warning-text: #c2410c; /* Orange 700 */

    /* [Backgrounds] */
    --bg-body: #64748b;
    --bg-paper: #ffffff;
    --bg-section: #f8fafc;

    /* [Borders] */
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;

    /* [Dimensions] */
    --page-width: 210mm;
    --page-padding: 16mm 20mm; /* 상하 여백 약간 줄임 */
}

/* [Reset & Typography] */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    background-color: var(--bg-body);
    color: var(--color-primary-dark);
    line-height: 1.45;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 0;
    gap: 30px;
}

h1, h2, h3, h4 {
    line-height: 1.2;
    letter-spacing: -0.03em;
}

p, li {
    letter-spacing: -0.01em;
}

ul {
    list-style: none;
}

code {
    font-family: 'Consolas', 'Monaco', monospace;
    background-color: var(--color-accent-light);
    padding: 2px 4px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--color-accent);
    border: 1px solid #dbeafe;
}

/* [Page Layout] */
.page {
    width: var(--page-width);
    height: auto;
    background: var(--bg-paper);
    padding: var(--page-padding);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* [Header] */
header {
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--color-primary-dark);
}

.header-left h1 {
    font-size: 34px;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 6px;
    letter-spacing: -0.04em;
}

.header-left .eng-name {
    font-size: 18px;
    font-weight: 400;
    color: var(--color-secondary);
    margin-left: 6px;
}

.header-left .job-role {
    font-size: 15px;
    color: var(--color-accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-info {
    text-align: right;
    font-size: 13px;;
    color: var(--color-secondary);
    font-weight: 500;
    line-height: 1.5;
}

.contact-info a {
    color: var(--color-secondary);
    text-decoration: none;
    border-bottom: 1px dotted var(--color-secondary);
}

/* [Section Titles] */
section {
    margin-bottom: 20px;
}

.section-title {
    font-size: 16px;
    font-weight: 800;
    color: var(--color-primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}

.section-title::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border-light);
    margin-left: 12px;
}

/* [Summary Box] */
.summary-box {
    background-color: var(--bg-section);
    border-radius: 0 6px 6px 0;
    padding: 18px 22px;
    border-left: 4px solid var(--color-accent); /* 왼쪽 강조선 */
}

.summary-slogan {
    font-size: 15.5px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
    font-style: italic;
    position: relative;
}

.summary-slogan::before {
    content: "“";
    font-size: 24px;
    color: var(--color-accent);
    position: absolute;
    left: -18px;
    top: -5px;
}

.summary-desc {
    font-size: 13.5px;
    line-height: 1.5;
    color: var(--color-secondary);
    margin-bottom: 12px;
    text-align: justify;
}

.summary-points li {
    position: relative;
    padding-left: 16px;
    margin-bottom: 4px;
    font-size: 13.5px;
    color: var(--color-primary);
    font-weight: 600;
}

.summary-points li::before {
    content: "✔";
    position: absolute;
    left: 0;
    top: 1px;
    color: var(--color-accent);
    font-size: 11px;
}

/* [Skills] */
.skills-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skill-row {
    display: flex;
    align-items: center; /* 수직 중앙 정렬 */
}

.skill-category {
    width: 140px;
    flex-shrink: 0;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    flex: 1;
}

/* Tech Tag Redesign */
.tech-tag {
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 600;
    letter-spacing: 0;
}

.tech-tag.main {
    background-color: var(--color-primary-dark);
    color: #ffffff;
    border: 1px solid var(--color-primary-dark);
}

.tech-tag.sub {
    background-color: #fff;
    color: var(--color-secondary);
    border: 1px solid var(--border-medium);
}

/* [Work Experience - Resume Page 1] */
.job-block {
    margin-bottom: 18px;
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 2px;
}

.job-company {
    font-size: 17px;
    font-weight: 800;
    color: var(--color-primary-dark);
}

.job-period {
    font-size: 13px;
    color: var(--color-secondary);
    font-weight: 600;
    background: var(--bg-section);
    padding: 2px 6px;
    border-radius: 4px;
}

.job-role-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 8px;
    display: block;
}

.job-desc li {
    position: relative;
    padding-left: 14px;
    margin-bottom: 4px;
    font-size: 14px;
    color: var(--color-secondary);
}

.job-desc li::before {
    content: "•";
    position: absolute;
    left: 2px;
    color: var(--border-medium);
}

.job-desc li strong {
    color: var(--color-primary-dark);
    font-weight: 700;
}

/* [Education] */
.edu-row {
    display: flex;
    margin-bottom: 6px;
    font-size: 14px;
    border-bottom: 1px dashed var(--border-light);
    padding-bottom: 6px;
}

.edu-row:last-child {
    border-bottom: none;
}

.edu-date {
    width: 140px;
    flex-shrink: 0;
    color: var(--color-secondary);
    font-variant-numeric: tabular-nums;
}

/* [Page 2: Career Description] */
.cd-header {
    text-align: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-light);

    page-break-after: avoid;
    break-after: avoid;
}

.cd-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--color-primary-dark);
}

.cd-subtitle {
    font-size: 15px;
    color: var(--color-secondary);
    font-weight: 500;
}

/* [Project Detail] */
.project-block {
    margin-bottom: 24px;
    page-break-inside: avoid;
}

.project-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-left: 12px;
    border-left: 5px solid var(--color-primary-dark);
}

.project-name {
    font-size: 20px;
    font-weight: 800;
    color: var(--color-primary-dark);
    line-height: 1.1;
}

.project-info-grid {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 6px 15px;
    margin-bottom: 18px;
    font-size: 13.5px;
    padding: 12px 16px;
    background: var(--bg-section);
    border: 1px solid var(--border-light);
    border-radius: 6px;
}

.info-label {
    font-weight: 700;
    color: var(--color-secondary);
    text-align: right;
    text-transform: uppercase;
    font-size: 11px;
    margin-top: 3px;
}

.tech-detail-box {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 16px 20px;
    margin-bottom: 12px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.tech-topic {
    font-size: 15px;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border-light);
}

/* [Problem / Solution Badge System] */
.ps-row {
    display: flex;
    gap: 12px;
    font-size: 14px;
    margin-bottom: 8px;
    align-items: flex-start;
}

.ps-badge {
    min-width: 70px;
    text-align: center;
    font-size: 11px;
    font-weight: 800;
    padding: 2px 0;
    border-radius: 4px;
    text-transform: uppercase;
    flex-shrink: 0;
    margin-top: 1px;
}

.ps-badge.problem {
    background: var(--bg-section);
    color: var(--color-secondary);
    border: 1px solid var(--border-medium);
}

.ps-badge.solution {
    background: var(--color-accent-light);
    color: var(--color-accent);
    border: 1px solid #dbeafe;
}

.ps-badge.risk {
    background: var(--color-danger-bg);
    color: var(--color-danger);
    border: 1px solid #ffe4e6;
}

.ps-badge.action {
    background: #f0fdf4;
    color: #15803d;
    border: 1px solid #dcfce7;
}

.ps-badge.issue {
    background: var(--color-warning-bg);
    color: var(--color-warning-text);
    border: 1px solid #ffedd5;
}

.ps-content {
    font-size: 13.5px;
    color: var(--color-primary);
    line-height: 1.5;
}

.ps-content strong {
    color: var(--color-primary-dark);
    font-weight: 700;
    background: linear-gradient(to top, rgba(239, 246, 255, 0.8) 50%, transparent 50%);
}

@media print {
    @page {
        size: A4;
        margin: 0;
    }

    body {
        background: none;
        padding: 0;
        margin: 0;
    }

    .page {
        height: auto;
        margin: 0;
        padding: var(--page-padding);
        box-shadow: none;
        border: none;
        page-break-after: always;
    }
}

/* [Mobile & Tablet Responsive] */
@media screen and (max-width: 210mm) {
    :root {
        --page-padding: 20px;
    }

    body {
        padding: 20px 0;
    }

    .page {
        width: 100%;
        max-width: 100%;
        min-height: auto;
        box-shadow: none;
        border-radius: 0;
    }

    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .contact-info {
        text-align: left;
    }
}