@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+KR:wght@300;400;500;700&display=swap');

:root {
    /* Variant Color Scheme */
    --color-sandstone: #D9D1B4;
    --color-aegean: #2A3251;
    --color-black: #11110F;
    --color-white: #F2F2F2;
    
    --color-sandstone-600: #8B856C;
    --color-aegean-600: #7380B0;
    --color-aegean-700: #4B5880;
    --color-aegean-800: #354066;

    /* Extra UI Colors */
    --color-gray-100: #F9F9F8;
    --color-gray-200: #E5E5E3;
    --color-gray-300: #C7C7C3;
    --color-gray-500: #767672;
    --color-accent: #D0533C; /* 부드러운 코랄 붉은빛 포인트 */
    
    /* Layout */
    --radius-none: 0px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --gap-tight: 12px;
    --gap-base: 24px;
    --gap-loose: 48px;
    
    /* Typography */
    --font-main: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-base: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base resets */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-white);
    color: var(--color-black);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Common Layout Components */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--gap-loose);
}

.section-padding {
    padding: 100px 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 60px;
    border-bottom: 1px solid rgba(17, 17, 15, 0.15);
    padding-bottom: 24px;
}

.section-header.dark {
    border-bottom-color: var(--color-aegean-700);
}

.section-header h2 {
    font-size: 36px;
    font-weight: 500;
    letter-spacing: -0.03em;
}

.label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    display: block;
    opacity: 0.8;
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.25;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Button & UI elements */
.btn-aegean {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-aegean);
    color: var(--color-white);
    padding: 14px 28px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
    cursor: pointer;
    border: none;
}

.btn-aegean:hover {
    background: var(--color-aegean-700);
}

.btn-aegean:active {
    transform: scale(0.98);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--color-black);
    padding: 13px 27px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid var(--color-black);
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
    cursor: pointer;
}

.btn-outline:hover {
    background: var(--color-black);
    color: var(--color-white);
}

.btn-outline:active {
    transform: scale(0.98);
}

/* Header styling */
header {
    background: var(--color-white);
    border-bottom: 1px solid rgba(17, 17, 15, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

header.scrolled {
    background: rgba(242, 242, 242, 0.95);
    backdrop-filter: blur(10px);
    border-bottom-color: rgba(17, 17, 15, 0.05);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    padding: 0 var(--gap-loose);
    max-width: 100%;
}

.logo {
    font-weight: 700;
    font-size: 18px;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-symbol {
    display: inline-block;
    width: 14px;
    height: 14px;
    background-color: var(--color-aegean);
    transform: rotate(45deg);
}

.logo-img {
    height: 65px;
    width: auto;
    object-fit: contain;
    mix-blend-mode: multiply;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 36px;
    align-items: center;
}

nav a {
    color: var(--color-black);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    padding: 8px 0;
    transition: opacity var(--transition-fast);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-aegean);
    transition: width var(--transition-fast);
}

nav a:hover::after,
nav a.active::after {
    width: 100%;
}

nav a:hover {
    opacity: 0.8;
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-black);
    margin: 5px 0;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Footer styling */
footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: 80px var(--gap-loose);
    font-size: 12px;
    opacity: 0.9;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    max-width: 100%;
    margin: 0 auto;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-logo {
    font-weight: 700;
    font-size: 16px;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

.footer-info {
    opacity: 0.6;
    line-height: 1.8;
    letter-spacing: 0.05em;
}

.footer-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 16px;
}

.footer-links {
    display: flex;
    gap: 24px;
    list-style: none;
}

.footer-links a {
    opacity: 0.6;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: opacity var(--transition-fast);
}

.footer-links a:hover {
    opacity: 1;
}

/* Fade-in Page animation */
.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Editorial Board Table Style */
.board-table-container {
    overflow-x: auto;
    margin-top: 40px;
}

.board-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
}

.board-table th, .board-table td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--color-gray-200);
}

.board-table th {
    background-color: var(--color-aegean);
    color: var(--color-white);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.board-table tr:hover td {
    background-color: var(--color-gray-100);
}

/* Center card style for intro page */
.center-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap-base);
    margin-top: 40px;
}

.center-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    padding: 40px 32px;
    transition: border-color var(--transition-base), transform var(--transition-base);
    display: flex;
    flex-direction: column;
}

.center-card:hover {
    border-color: var(--color-aegean-600);
    transform: translateY(-4px);
}

.center-icon {
    font-size: 20px;
    color: var(--color-sandstone-600);
    margin-bottom: 16px;
    font-weight: 700;
    font-family: monospace;
}

.center-card h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--color-aegean);
}

.center-card p {
    font-size: 14px;
    color: var(--color-gray-500);
    line-height: 1.8;
    text-align: justify;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--gap-base);
    }
    
    .section-padding {
        padding: 70px 0;
    }

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

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
        z-index: 110;
    }
    
    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--color-white);
        box-shadow: -10px 0 30px rgba(0,0,0,0.05);
        padding: 120px var(--gap-base) var(--gap-base);
        transition: right var(--transition-base);
        z-index: 105;
    }
    
    nav.active {
        right: 0;
    }
    
    nav ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
    }
    
    nav a {
        font-size: 18px;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    
    .footer-container {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-right {
        align-items: flex-start;
    }
}