@charset "utf-8";

/* =========================== 공통 변수 및 기본 설정 */
:root {
    --section-spacing: 120px;
    --inner-spacing: 100px;
    --border-radius: 20px;
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --shadow-light: 0 4px 25px rgba(0,0,0,0.08);
    --shadow-hover: 0 15px 40px rgba(0,0,0,0.15);
    
    /* 로드맵 컬러 스킴 */
    --phase-1-color: #3498db;
    --phase-2-color: #2ecc71;
    --phase-3-color: #f39c12;
    --phase-4-color: #e74c3c;
    
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    
    --text-dark: #2c3e50;
    --text-medium: #555;
    --text-light: #777;
    --border-color: #e1e1e1;
    --bg-light: #f8f9fa;
    --bg-dark: #1a1a2e;
}

/* =========================== 기본 페이지 설정 */
#roadmapPage {
    overflow: hidden;
    position: relative;
    margin: 100px auto;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-light);
    font-family: 'pretendard';
}

#roadmapPage .pl { white-space: pre-line; }
#roadmapPage * { word-break: keep-all; }
#roadmapPage .inner {
    overflow: hidden;
    max-width: var(--mainsize);
    margin: 0 20px;
    padding: var(--inner-spacing) 0;
}

/* =========================== 헤더 섹션 */
.section-header {
    position: relative;
    background: #fff;
    padding: 0;
    overflow: hidden;
}

#roadmapPage .tit {
    text-align: center;
    margin-bottom: 50px;
}

#roadmapPage .tit h1 {
    margin-bottom: 50px;
    font-size: clamp(25px, 2.6vw, 50px);
    font-weight: 700;
    color: var(--text-dark);
}

#roadmapPage .tit img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    position: relative;
}

#roadmapPage .full_txt {
    padding: 100px 0 150px;
}

#roadmapPage .full_txt h2 {
    position: relative;
    font-size: clamp(20px, 2.08vw, 40px);
    font-weight: 700;
    color: rgba(0,0,0,.3);
    text-align: center;
}

#roadmapPage .full_txt p {
    display: inline;
    background: linear-gradient(to right, var(--text-dark), var(--text-dark)) no-repeat;
    -webkit-background-clip: text;
    background-clip: text;
    background-size: 0%;
    transition: background-size cubic-bezier(.1,.5,.5,1) 0.5s;
    white-space: pre-line;
}

/* =========================== 단계별 섹션 공통 스타일 */
.section-phase {
    position: relative;
    padding: 120px 0;
    background: #fff;
}

.section-phase:nth-child(even) {
    background: var(--bg-light);
}

.phase-header {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
}

.phase-number {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.phase-header h3 {
    font-size: clamp(28px, 3vw, 48px);
    font-weight: 700;
    color: var(--text-dark);
    margin: 0;
    position: relative;
}

/* 단계별 컬러 */
.phase-1 .phase-number {
    background: linear-gradient(135deg, var(--phase-1-color), #2980b9);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.3);
}

.phase-2 .phase-number {
    background: linear-gradient(135deg, var(--phase-2-color), #27ae60);
    box-shadow: 0 8px 25px rgba(46, 204, 113, 0.3);
}

.phase-3 .phase-number {
    background: linear-gradient(135deg, var(--phase-3-color), #e67e22);
    box-shadow: 0 8px 25px rgba(243, 156, 18, 0.3);
}

.phase-4 .phase-number {
    background: linear-gradient(135deg, var(--phase-4-color), #c0392b);
    box-shadow: 0 8px 25px rgba(231, 76, 60, 0.3);
}

/* =========================== 로드맵 아이템 그리드 */
.roadmap-items {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.roadmap-item {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 40px 25px;
    text-align: center;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.roadmap-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 4px;
    transition: left 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.phase-1 .roadmap-item::before { background: var(--phase-1-color); }
.phase-2 .roadmap-item::before { background: var(--phase-2-color); }
.phase-3 .roadmap-item::before { background: var(--phase-3-color); }
.phase-4 .roadmap-item::before { background: var(--phase-4-color); }

.roadmap-item:hover::before {
    left: 0;
}

.item-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    transition: var(--transition);
    position: relative;
}

.phase-1 .item-icon {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.1), rgba(52, 152, 219, 0.2));
    border: 2px solid rgba(52, 152, 219, 0.3);
}

.phase-2 .item-icon {
    background: linear-gradient(135deg, rgba(46, 204, 113, 0.1), rgba(46, 204, 113, 0.2));
    border: 2px solid rgba(46, 204, 113, 0.3);
}

.phase-3 .item-icon {
    background: linear-gradient(135deg, rgba(243, 156, 18, 0.1), rgba(243, 156, 18, 0.2));
    border: 2px solid rgba(243, 156, 18, 0.3);
}

.phase-4 .item-icon {
    background: linear-gradient(135deg, rgba(231, 76, 60, 0.1), rgba(231, 76, 60, 0.2));
    border: 2px solid rgba(231, 76, 60, 0.3);
}

.item-icon i {
    width: 32px;
    height: 32px;
    color: var(--text-dark);
    transition: var(--transition);
}

.phase-1 .roadmap-item:hover .item-icon i { color: var(--phase-1-color); }
.phase-2 .roadmap-item:hover .item-icon i { color: var(--phase-2-color); }
.phase-3 .roadmap-item:hover .item-icon i { color: var(--phase-3-color); }
.phase-4 .roadmap-item:hover .item-icon i { color: var(--phase-4-color); }

.roadmap-item h4 {
    font-size: clamp(16px, 1.4vw, 20px);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
    line-height: 1.3;
}

.roadmap-item p {
    font-size: 14px;
    color: var(--text-medium);
    line-height: 1.5;
    margin: 0;
}

/* 호버 효과 */
@media(hover:hover) {
    .roadmap-item:hover {
        transform: translateY(-10px);
        box-shadow: var(--shadow-hover);
        border-color: transparent;
    }
    
    .phase-1 .roadmap-item:hover {
        box-shadow: 0 15px 40px rgba(52, 152, 219, 0.2);
    }
    
    .phase-2 .roadmap-item:hover {
        box-shadow: 0 15px 40px rgba(46, 204, 113, 0.2);
    }
    
    .phase-3 .roadmap-item:hover {
        box-shadow: 0 15px 40px rgba(243, 156, 18, 0.2);
    }
    
    .phase-4 .roadmap-item:hover {
        box-shadow: 0 15px 40px rgba(231, 76, 60, 0.2);
    }
    
    .roadmap-item:hover .item-icon {
        transform: scale(1.1);
    }
}

/* =========================== 타임라인 섹션 */
.section-timeline {
    background: var(--bg-dark);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.section-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%);
    opacity: 0.5;
}

.section-title {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
    z-index: 2;
}

.section-title h3 {
    font-size: clamp(28px, 3vw, 48px);
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

.title-line {
    width: 80px;
    height: 4px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    margin: 0 auto;
    border-radius: 2px;
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.5);
}

.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    z-index: 2;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, 
        var(--phase-1-color) 0%, 
        var(--phase-1-color) 25%, 
        var(--phase-2-color) 25%, 
        var(--phase-2-color) 50%, 
        var(--phase-3-color) 50%, 
        var(--phase-3-color) 75%, 
        var(--phase-4-color) 75%, 
        var(--phase-4-color) 100%);
    transform: translateX(-50%);
    border-radius: 2px;
    box-shadow: 0 0 20px rgba(255,255,255,0.3);
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
    opacity: 0;
    transform: translateY(30px);
}

.timeline-item:nth-child(2) {
    padding-right: 50%;
    text-align: right;
}

.timeline-item:nth-child(3) {
    padding-left: 50%;
    text-align: left;
}

.timeline-item:nth-child(4) {
    padding-right: 50%;
    text-align: right;
}

.timeline-item:nth-child(5) {
    padding-left: 50%;
    text-align: left;
}

.timeline-marker {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 4px solid #fff;
    box-shadow: 0 0 20px rgba(0,0,0,0.3);
    z-index: 3;
}

.phase-1-marker { background: var(--phase-1-color); }
.phase-2-marker { background: var(--phase-2-color); }
.phase-3-marker { background: var(--phase-3-color); }
.phase-4-marker { background: var(--phase-4-color); }

.timeline-content {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: 30px;
    transition: var(--transition);
}

.timeline-content h4 {
    font-size: clamp(18px, 1.6vw, 24px);
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.timeline-period {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.timeline-content p:last-child {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    line-height: 1.6;
}

@media(hover:hover) {
    .timeline-content:hover {
        background: rgba(255, 255, 255, 0.15);
        transform: scale(1.02);
    }
}

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

/* 대형 데스크탑 (1400px 이상) */
@media(min-width: 1400px) {
    .roadmap-items {
        gap: 40px;
    }
    
    .roadmap-item {
        padding: 50px 30px;
    }
}

/* 데스크탑 (1200px 이하) */
@media(max-width: 1200px) {
    .roadmap-items {
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
    }
}

/* 태블릿 (1024px 이하) */
@media(max-width: 1024px) {
    :root {
        --section-spacing: 80px;
        --inner-spacing: 60px;
    }
    
    #roadmapPage {
        margin: 50px auto;
    }
    
    .section-phase {
        padding: 80px 0;
    }
    
    .section-timeline {
        padding: 80px 0;
    }
    
    .phase-header {
        margin-bottom: 60px;
    }
    
    .roadmap-items {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .timeline-item:nth-child(2),
    .timeline-item:nth-child(3),
    .timeline-item:nth-child(4),
    .timeline-item:nth-child(5) {
        padding: 0 0 0 50px;
        text-align: left;
    }
    
    .timeline-line {
        left: 15px;
    }
    
    .timeline-marker {
        left: 15px !important;
        transform: translateX(0) !important;
    }
}

/* 모바일 (700px 이하) */
@media(max-width: 700px) {
    #roadmapPage {
        font-size: 14px;
        margin: 30px auto;
    }
    
    #roadmapPage .inner {
        margin: 0 15px;
        padding: 40px 0;
    }
    
    .section-header {
        min-height: 80vh;
        padding: 60px 0;
    }
    
    .section-phase {
        padding: 60px 0;
    }
    
    .section-timeline {
        padding: 60px 0;
    }
    
    .phase-header {
        margin-bottom: 40px;
    }
    
    .roadmap-items {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .roadmap-item {
        padding: 30px 20px;
    }
    
    .item-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 20px;
    }
    
    .item-icon i {
        width: 24px;
        height: 24px;
    }
    
    .timeline-content {
        padding: 20px;
    }
    
    .timeline-item {
        margin-bottom: 40px;
        padding: 0 0 0 40px;
    }
    
    .timeline-line {
        left: 10px;
    }
    
    .timeline-marker {
        left: 10px !important;
        transform: translateX(0) !important;
        width: 16px;
        height: 16px;
        border-width: 3px;
    }
}

/* 작은 모바일 (480px 이하) */
@media(max-width: 480px) {
    #roadmapPage .inner {
        margin: 0 10px;
        padding: 30px 0;
    }
    
    .section-header {
        min-height: 70vh;
        padding: 40px 0;
    }
    
    .section-phase {
        padding: 40px 0;
    }
    
    .section-timeline {
        padding: 40px 0;
    }
    
    .roadmap-item {
        padding: 25px 15px;
    }
    
    .timeline-content {
        padding: 15px;
    }
    
    .timeline-item {
        padding: 0 0 0 30px;
    }
}

/* =========================== 추가 애니메이션 효과 */

/* 스크롤 애니메이션을 위한 기본 상태 */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* 접근성 개선 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 포커스 상태 개선 */
.roadmap-item:focus {
    outline: 3px solid var(--phase-1-color);
    outline-offset: 3px;
}

/* 인쇄 스타일 */
@media print {
    #roadmapPage {
        margin: 0;
        font-size: 12px;
        background: #fff !important;
    }
    
    .section-header {
        background: #fff !important;
        color: #000 !important;
        min-height: auto;
        padding: 20px 0;
    }
    
    .section-phase {
        background: #fff !important;
        padding: 30px 0;
    }
    
    .section-timeline {
        background: #fff !important;
        padding: 30px 0;
    }
    
    .roadmap-items {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 15px !important;
    }
    
    .roadmap-item {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #ccc;
    }
    
    .timeline-content {
        background: #f9f9f9 !important;
        color: #000 !important;
        border: 1px solid #ccc;
    }
}

/* 다크모드 지원 */
@media (prefers-color-scheme: dark) {
    .section-phase {
        background: #1a1a2e;
        color: #fff;
    }
    
    .section-phase:nth-child(even) {
        background: #16213e;
    }
    
    .roadmap-item {
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.2);
        color: #fff;
    }
    
    .roadmap-item h4 {
        color: #fff;
    }
    
    .roadmap-item p {
        color: rgba(255, 255, 255, 0.8);
    }
}