/* ============================================
   Aetion AI - 랜딩 페이지 스타일
   ============================================ */

/* 랜딩 페이지 전체 */
.landing-page {
    background: var(--bg-primary);
    min-height: 100vh;
}

/* ============================================
   네비게이션
   ============================================ */
.landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.landing-nav.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.landing-nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.landing-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-light);
}

.landing-logo .brain-icon {
    width: 32px;
    height: 32px;
    color: #22d3ee;
}

.landing-nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--text-primary);
}

/* ============================================
   히어로 섹션
   ============================================ */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 6rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(34, 211, 238, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 600px;
    z-index: 10;
    margin-left: 10%;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.3);
    border-radius: 9999px;
    font-size: 0.875rem;
    color: #22d3ee;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.gradient-text {
    background: linear-gradient(135deg, #22d3ee 0%, #3b82f6 50%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* 히어로 비주얼 (오비탈 애니메이션) */
.hero-visual {
    position: absolute;
    right: 10%;
    top: 50%;
    transform: translateY(-50%);
    width: 500px;
    height: 500px;
}

.orbit-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.orbit {
    position: absolute;
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.orbit-1 {
    width: 200px;
    height: 200px;
    animation: rotate 20s linear infinite;
}

.orbit-2 {
    width: 320px;
    height: 320px;
    animation: rotate 30s linear infinite reverse;
}

.orbit-3 {
    width: 440px;
    height: 440px;
    animation: rotate 40s linear infinite;
}

@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.center-node {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #22d3ee, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 60px rgba(34, 211, 238, 0.5);
}

.center-node svg {
    width: 40px;
    height: 40px;
    color: white;
}

.satellite {
    position: absolute;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.sat-1 { top: 5%; left: 45%; animation: float 3s ease-in-out infinite; }
.sat-2 { top: 25%; right: 5%; animation: float 3s ease-in-out infinite 0.5s; }
.sat-3 { top: 60%; right: 0%; animation: float 3s ease-in-out infinite 1s; }
.sat-4 { bottom: 10%; right: 20%; animation: float 3s ease-in-out infinite 1.5s; }
.sat-5 { bottom: 20%; left: 10%; animation: float 3s ease-in-out infinite 2s; }
.sat-6 { top: 35%; left: 0%; animation: float 3s ease-in-out infinite 2.5s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ============================================
   섹션 공통
   ============================================ */
.section {
    padding: 6rem 2rem;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #22d3ee;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* ============================================
   비전 섹션
   ============================================ */
.vision-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.vision-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.vision-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.vision-card:hover {
    border-color: rgba(34, 211, 238, 0.5);
    transform: translateY(-4px);
}

.vision-icon {
    width: 48px;
    height: 48px;
    background: rgba(34, 211, 238, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.vision-icon svg {
    width: 24px;
    height: 24px;
    color: #22d3ee;
}

.vision-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: #22d3ee;
}

.vision-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.philosophy-box {
    background: rgba(34, 211, 238, 0.05);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    text-align: center;
}

.philosophy-label {
    display: inline-block;
    background: rgba(34, 211, 238, 0.2);
    color: #22d3ee;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.philosophy-box p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   문제점 섹션
   ============================================ */
.problem-section {
    background: var(--bg-secondary);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.problem-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-left: 4px solid #ef4444;
    border-radius: 12px;
    padding: 1.5rem;
}

.problem-number {
    font-size: 2rem;
    font-weight: 800;
    color: rgba(239, 68, 68, 0.3);
    margin-bottom: 0.5rem;
}

.problem-card h3 {
    font-size: 1rem;
    color: #f87171;
    margin-bottom: 0.5rem;
}

.problem-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.solution-arrow {
    text-align: center;
    margin-bottom: 2rem;
}

.solution-arrow svg {
    width: 48px;
    height: 48px;
    color: #10b981;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}

.solution-highlight {
    text-align: center;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.solution-highlight span {
    color: var(--text-muted);
}

.solution-highlight em {
    color: #10b981;
    font-style: normal;
    font-weight: 600;
}

/* ============================================
   솔루션 섹션
   ============================================ */
.solution-section {
    background: var(--bg-primary);
}

.architecture-visual {
    margin-bottom: 3rem;
}

.arch-layer {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: linear-gradient(90deg, rgba(34, 211, 238, 0.1) 0%, transparent 100%);
    border: 1px solid rgba(34, 211, 238, 0.3);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.layer-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #22d3ee, #3b82f6);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.layer-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.layer-content h3 {
    font-size: 1.25rem;
    color: #22d3ee;
    margin-bottom: 0.5rem;
}

.layer-content p {
    color: var(--text-secondary);
}

.arch-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 1rem 0;
}

.connector-line {
    width: 2px;
    height: 40px;
    background: linear-gradient(180deg, #22d3ee, #3b82f6);
}

.connector-arrows {
    display: flex;
    gap: 3rem;
}

.connector-arrows span {
    width: 2px;
    height: 30px;
    background: var(--border-color);
}

.sub-agents-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
}

.sub-agent-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem 1rem;
    text-align: center;
    transition: all 0.3s ease;
}

.sub-agent-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.agent-badge {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.arch-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.arch-feature {
    display: flex;
    gap: 1rem;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: rgba(34, 211, 238, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: #22d3ee;
}

.arch-feature h4 {
    color: #22d3ee;
    margin-bottom: 0.5rem;
}

.arch-feature p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.innovation-box {
    background: rgba(34, 211, 238, 0.05);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    text-align: center;
}

.innovation-label {
    display: inline-block;
    background: rgba(34, 211, 238, 0.2);
    color: #22d3ee;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.innovation-box p {
    color: var(--text-secondary);
}

/* ============================================
   기술 섹션
   ============================================ */
.tech-section {
    background: var(--bg-secondary);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
}

.tech-header {
    margin-bottom: 1.5rem;
}

.tech-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.tech-icon.macro {
    background: rgba(34, 211, 238, 0.1);
}

.tech-icon.risk {
    background: rgba(16, 185, 129, 0.1);
}

.tech-icon svg {
    width: 28px;
    height: 28px;
}

.tech-icon.macro svg { color: #22d3ee; }
.tech-icon.risk svg { color: #10b981; }

.tech-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.tech-badge {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.tech-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.tech-feature-item {
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 1rem;
}

.feature-label {
    display: block;
    font-weight: 600;
    color: #22d3ee;
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
}

.feature-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.tech-highlight {
    background: rgba(34, 211, 238, 0.05);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: 8px;
    padding: 1rem;
}

.tech-highlight.risk-highlight {
    background: rgba(16, 185, 129, 0.05);
    border-color: rgba(16, 185, 129, 0.2);
}

.tech-highlight p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.tech-highlight ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tech-highlight li {
    font-size: 0.875rem;
    color: var(--text-muted);
    padding-left: 1rem;
    position: relative;
    margin-bottom: 0.25rem;
}

.tech-highlight li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 4px;
    height: 4px;
    background: #22d3ee;
    border-radius: 50%;
}

/* ============================================
   로드맵 섹션
   ============================================ */
.roadmap-section {
    background: var(--bg-primary);
}

.roadmap-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

.roadmap-timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, #22d3ee, #3b82f6, #8b5cf6);
}

.timeline-item {
    position: relative;
    padding-bottom: 2.5rem;
}

.timeline-marker {
    position: absolute;
    left: -40px;
    top: 0;
    width: 18px;
    height: 18px;
    background: var(--bg-primary);
    border: 3px solid #22d3ee;
    border-radius: 50%;
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.timeline-date {
    display: inline-block;
    background: rgba(34, 211, 238, 0.1);
    color: #22d3ee;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.timeline-content h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.timeline-content p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.roadmap-footer {
    text-align: center;
    margin-top: 3rem;
}

.roadmap-tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.roadmap-tagline .highlight {
    color: #22d3ee;
    font-weight: 600;
}

/* ============================================
   CTA 섹션
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.1) 0%, rgba(37, 99, 235, 0.1) 100%);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.cta-content {
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* ============================================
   푸터
   ============================================ */
.landing-footer {
    background: var(--bg-secondary);
    padding: 4rem 2rem 2rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 4rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border-color);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .landing-logo {
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 4rem;
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.footer-column a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============================================
   반응형
   ============================================ */
@media (max-width: 1024px) {
    .hero-visual {
        display: none;
    }

    .hero-content {
        margin-left: 0;
        max-width: 100%;
        text-align: center;
    }

    .hero-actions {
        justify-content: center;
    }

    .vision-grid {
        grid-template-columns: 1fr;
    }

    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sub-agents-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .arch-features {
        grid-template-columns: 1fr;
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .landing-nav-links {
        display: none;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .problem-grid {
        grid-template-columns: 1fr;
    }

    .sub-agents-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-container {
        flex-direction: column;
        gap: 2rem;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 2rem;
    }
}