/* ============================================
   IDAC - Toss Style Design System
   ============================================ */

/* ── Reset & Base ── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #FFFFFF;
    --color-bg-secondary: #F7F8FA;
    --color-bg-tertiary: #F2F3F6;
    --color-text: #191F28;
    --color-text-secondary: #4E5968;
    --color-text-tertiary: #8B95A1;
    --color-text-quaternary: #B0B8C1;
    --color-primary: #3182F6;
    --color-primary-light: #E8F3FF;
    --color-primary-dark: #1B64DA;
    --color-success: #34C759;
    --color-warning: #FF9500;
    --color-danger: #FF3B30;
    --color-border: #E5E8EB;
    --color-border-light: #F2F3F6;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --font-en: 'Outfit', 'Inter', sans-serif;
    --font-kr: 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
    --max-width: 1200px;
    --nav-height: 64px;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-kr);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s;
}

img {
    max-width: 100%;
    display: block;
}

/* ── Container ── */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Navigation ── */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    background: transparent;
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-img {
    height: 32px;
    width: auto;
}

.logo-white {
    display: block;
}

.logo-black {
    display: none;
}

.nav.scrolled .logo-white {
    display: none;
}

.nav.scrolled .logo-black {
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 4px;
}

.nav-link {
    font-family: var(--font-en);
    font-size: 14px;
    font-weight: 500;
    color: rgba(255,255,255,0.7);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}

.nav.scrolled .nav-link {
    color: var(--color-text-secondary);
}

.nav.scrolled .nav-link:hover {
    color: var(--color-text);
    background: var(--color-bg-secondary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: rgba(255,255,255,0.8);
}

.nav.scrolled .nav-user {
    color: var(--color-text-secondary);
}

.role-badge {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.role-master { background: #FFD700; color: #191F28; }
.role-admin { background: var(--color-primary); color: #fff; }
.role-manager { background: var(--color-success); color: #fff; }
.role-user { background: var(--color-bg-tertiary); color: var(--color-text-secondary); }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #fff;
    cursor: pointer;
}

.nav.scrolled .nav-toggle {
    color: var(--color-text);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    z-index: 999;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid var(--color-border);
}

.mobile-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.mobile-menu-inner {
    padding: 16px 24px 24px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mobile-link {
    padding: 12px 16px;
    font-size: 16px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    color: var(--color-text);
    transition: background 0.2s;
}

.mobile-link:hover {
    background: var(--color-bg-secondary);
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-family: var(--font-kr);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    font-size: 14px;
    padding: 10px 20px;
}

.btn-sm { font-size: 13px; padding: 6px 14px; }
.btn-lg { font-size: 16px; padding: 14px 32px; border-radius: var(--radius-md); }

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(49,130,246,0.3);
}

.btn-ghost {
    background: transparent;
    color: rgba(255,255,255,0.8);
}

.btn-ghost:hover {
    background: rgba(255,255,255,0.1);
}

.nav.scrolled .btn-ghost {
    color: var(--color-text-secondary);
}

.nav.scrolled .btn-ghost:hover {
    background: var(--color-bg-secondary);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary-light);
}

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

.btn-danger:hover {
    background: #E0342B;
}

/* ── Hero Section ── */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0a0a0f;
    overflow: hidden;
}

#heroCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
}

.hero-logo {
    height: clamp(60px, 10vw, 120px);
    width: auto;
    margin-bottom: 16px;
}

.hero-title {
    font-family: var(--font-en);
    font-size: clamp(64px, 12vw, 140px);
    font-weight: 900;
    letter-spacing: -3px;
    line-height: 1;
    background: linear-gradient(135deg, #ffffff 0%, #a8c8ff 50%, #3182F6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    text-shadow: none;
}

.hero-subtitle {
    font-family: var(--font-en);
    font-size: clamp(14px, 2vw, 20px);
    font-weight: 300;
    letter-spacing: 6px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.5);
    margin-bottom: 32px;
}

.hero-slogan {
    font-size: clamp(16px, 2.2vw, 22px);
    font-weight: 400;
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
}

.hero-slogan-kr {
    font-size: 0.85em;
    color: rgba(255,255,255,0.4);
}

.hero-scroll {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border: 1.5px solid rgba(255,255,255,0.2);
    border-radius: 50%;
    color: rgba(255,255,255,0.4);
    font-size: 20px;
    margin-top: 60px;
    animation: bounceDown 2s ease-in-out infinite;
    transition: all 0.3s;
}

.hero-scroll:hover {
    border-color: rgba(255,255,255,0.5);
    color: rgba(255,255,255,0.8);
}

@keyframes bounceDown {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* ── Section Common ── */
.section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-en);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 16px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.5px;
    margin-bottom: 12px;
}

.section-desc {
    font-size: 17px;
    color: var(--color-text-tertiary);
    max-width: 560px;
    margin: 0 auto;
}

/* ── Fade Up Animation ── */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Padlet Section ── */
.padlet-section {
    background: var(--color-bg-secondary);
}

.padlet-board {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 16px;
    scroll-snap-type: x mandatory;
    direction: rtl;
    cursor: grab;
}

.padlet-board::before {
    content: '';
    flex: 0 0 2vw;
    min-width: 2vw;
}

.padlet-board::after {
    content: '';
    flex: 0 0 2vw;
    min-width: 2vw;
}

.padlet-board > * {
    direction: ltr;
}

.padlet-board::-webkit-scrollbar {
    height: 6px;
}

.padlet-board::-webkit-scrollbar-track {
    background: var(--color-border-light);
    border-radius: 3px;
}

.padlet-board::-webkit-scrollbar-thumb {
    background: var(--color-text-quaternary);
    border-radius: 3px;
}

.padlet-column {
    flex: 0 0 320px;
    min-width: 320px;
    max-height: 70vh;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
}

.padlet-column-header {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.column-new-badge {
    position: absolute;
    top: -2px;
    left: 14px;
    background: #FF4D6A;
    color: #fff;
    font-size: 10px;
    font-weight: 800;
    font-family: var(--font-en);
    letter-spacing: 0.5px;
    padding: 2px 8px;
    border-radius: 0 0 6px 6px;
}

.padlet-column-header h3 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
}

.padlet-add-btn {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: rgba(255,255,255,0.25);
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.padlet-add-btn:hover {
    background: rgba(255,255,255,0.4);
}

.padlet-cards {
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1 1 auto;
    min-height: 200px;
    overflow-y: auto;
}

.padlet-card {
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    cursor: pointer;
    flex-shrink: 0;
}

.padlet-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.padlet-card-image {
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
}

.padlet-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.padlet-card-body {
    padding: 14px 16px 10px;
}

.padlet-card-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 6px;
}

.padlet-card-content {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.padlet-card-footer {
    padding: 8px 16px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.padlet-card-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.padlet-card-author {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-tertiary);
}

.padlet-card-time {
    font-size: 11px;
    color: var(--color-text-quaternary);
}

.padlet-like-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--color-text-quaternary);
    font-size: 14px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.padlet-like-btn:hover {
    color: #FF3B6F;
    background: rgba(255, 59, 111, 0.06);
}

.padlet-like-btn.liked {
    color: #FF3B6F;
}

.padlet-like-btn.liked i {
    animation: likePopIn 0.3s ease;
}

.padlet-like-btn .like-count {
    font-size: 12px;
    font-weight: 600;
}

@keyframes likePopIn {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.padlet-card-actions {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: opacity 0.2s;
}

.padlet-card:hover .padlet-card-actions {
    opacity: 1;
}

.padlet-card-actions button {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 6px;
    background: rgba(255,255,255,0.9);
    color: var(--color-text-secondary);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s;
}

.padlet-card-actions button:hover {
    background: #fff;
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.padlet-empty {
    text-align: center;
    padding: 80px 40px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    width: 100%;
}

.padlet-empty i {
    font-size: 48px;
    color: var(--color-text-quaternary);
    margin-bottom: 16px;
}

.padlet-empty p {
    color: var(--color-text-tertiary);
    margin-bottom: 24px;
}

/* ── About Section ── */
.about-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 64px;
    align-items: start;
}

.about-logo-box {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-logo-img {
    max-width: 180px;
    width: 100%;
    height: auto;
}

.about-content {
    padding-top: 8px;
}

.about-text {
    font-size: 17px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
}

.about-text:last-child {
    margin-bottom: 0;
}

/* ── Activities Section ── */
.activities-section {
    background: var(--color-bg-secondary);
}

.activities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.activity-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.activity-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.activity-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.activity-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--color-text);
}

.activity-card p {
    font-size: 14px;
    color: var(--color-text-tertiary);
    line-height: 1.6;
}

/* ── Goals Section (Org Chart - Table Layout) ── */
.org-chart {
    overflow-x: auto;
    padding-bottom: 16px;
}

.org-row {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.org-cell {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: stretch;
    max-width: 360px;
}

.org-full {
    max-width: 100%;
    flex: 0 0 100%;
}

.org-box {
    width: 100%;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.6;
    display: flex;
    align-items: center;
    justify-content: center;
}

.org-root {
    background: #0a0a0f;
    color: #fff;
    font-family: var(--font-en);
    font-size: 28px;
    font-weight: 900;
    letter-spacing: -0.5px;
    padding: 20px 48px;
    max-width: 200px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
}

.pillar-1 { background: #3182F6; color: #fff; font-size: 14px; font-weight: 700; }
.pillar-2 { background: #34C759; color: #fff; font-size: 14px; font-weight: 700; }
.pillar-3 { background: #FF9500; color: #fff; font-size: 14px; font-weight: 700; }

.org-lv3 {
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 700;
}

.org-lv4 {
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    font-size: 12px;
}

.org-lv5 {
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    font-size: 12px;
    font-weight: 500;
    border: 1px solid var(--color-border-light);
}

.org-bottom {
    background: #0a0a0f;
    color: rgba(255,255,255,0.85);
    font-size: 12px;
    font-weight: 600;
}

.org-lines {
    gap: 16px;
    height: 20px;
}

.org-lines .org-cell {
    align-items: center;
    justify-content: center;
}

.org-vline {
    width: 2px;
    height: 100%;
    background: var(--color-border);
}

.org-lines-single {
    height: 16px;
}

.org-branch-line {
    position: relative;
    height: 16px;
}

.org-branch-line::before {
    content: '';
    position: absolute;
    top: 0;
    left: calc(100% / 6);
    right: calc(100% / 6);
    height: 2px;
    background: var(--color-border);
}

/* Member english name */
.member-en {
    font-family: var(--font-en);
    font-size: 11px;
    color: var(--color-text-quaternary);
    margin-bottom: 2px;
}

/* Join notice */
.join-notice {
    font-size: 14px;
    color: rgba(255,255,255,0.35);
    line-height: 1.8;
    margin-bottom: 32px;
}

/* ── Members Section ── */
.members-section {
    background: var(--color-bg-secondary);
}

.members-group {
    margin-bottom: 56px;
}

.members-group:last-child {
    margin-bottom: 0;
}

.members-group-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 12px;
}

.members-group-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.member-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 32px 20px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.member-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border);
}

.member-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--color-text-quaternary);
    margin: 0 auto 16px;
}

.member-card h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
}

.member-card p {
    font-size: 13px;
    color: var(--color-text-tertiary);
}

/* ── Announcements & Press ── */
.announcement-list,
.press-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.announcement-item,
.press-item {
    display: flex;
    gap: 20px;
    align-items: center;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--color-border);
    transition: all 0.2s;
    cursor: pointer;
}

.announcement-item:hover,
.press-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.announcement-thumb,
.press-thumb {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--color-primary);
    flex-shrink: 0;
}

.announcement-content h4,
.press-content h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
}

.announcement-content p,
.press-content p {
    font-size: 14px;
    color: var(--color-text-tertiary);
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.announcement-date,
.press-date {
    font-size: 12px;
    color: var(--color-text-quaternary);
}

/* ── Press Section ── */
.press-section {
    background: var(--color-bg-secondary);
}

/* ── Join Section ── */
.join-section {
    background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 100%);
    text-align: center;
}

.join-content {
    max-width: 640px;
    margin: 0 auto;
}

.join-content .section-tag {
    color: #6DB3F8;
}

.join-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
    margin-top: 16px;
}

.join-desc {
    font-size: 17px;
    color: rgba(255,255,255,0.5);
    line-height: 1.8;
    margin-bottom: 40px;
}

.join-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.join-buttons .btn-outline {
    border-color: rgba(255,255,255,0.3);
    color: rgba(255,255,255,0.8);
}

.join-buttons .btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
}

/* ── Partners Section ── */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
}

.partner-logo {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: 32px 20px;
    text-align: center;
    border: 1px solid var(--color-border-light);
    transition: all 0.2s;
}

.partner-logo:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.partner-logo span {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-quaternary);
}

/* ── Footer ── */
.footer {
    background: #0a0a0f;
    color: rgba(255,255,255,0.6);
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-logo-img {
    height: 36px;
    width: auto;
    display: block;
    margin-bottom: 12px;
}

.footer-slogan {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255,255,255,0.35);
}

.footer-links h4 {
    font-family: var(--font-en);
    font-size: 13px;
    font-weight: 600;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 10px;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: #fff;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: rgba(255,255,255,0.5);
    transition: all 0.2s;
}

.footer-social a:hover {
    background: var(--color-primary);
    color: #fff;
}

.footer-bottom {
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,0.25);
}

/* ── Modal ── */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    padding: 32px;
    width: 90%;
    max-width: 480px;
    box-shadow: var(--shadow-xl);
    transform: scale(0.95) translateY(10px);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.open .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 700;
}

.modal-close {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--color-bg-tertiary);
}

/* Card View Modal */
.card-view-modal {
    max-width: 560px;
    max-height: 90vh;
    padding: 0;
    overflow-y: auto;
    position: relative;
}

.card-view-modal .modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 10;
    background: rgba(0,0,0,0.4);
    color: #fff;
}

.card-view-modal .modal-close:hover {
    background: rgba(0,0,0,0.6);
}

.card-view-image {
    width: 100%;
}

.card-view-image img {
    width: 100%;
    display: block;
}

.card-view-body {
    padding: 24px 28px;
}

.card-view-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
}

.card-view-text {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    white-space: pre-wrap;
}

.card-view-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 28px;
    border-top: 1px solid var(--color-border-light);
}

.card-view-info {
    font-size: 13px;
    color: var(--color-text-tertiary);
}

.card-view-info span + span::before {
    content: '·';
    margin: 0 6px;
}

/* ── Forms ── */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-kr);
    font-size: 15px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
    transition: all 0.2s;
    outline: none;
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(49,130,246,0.12);
}

.form-input::placeholder {
    color: var(--color-text-quaternary);
}

textarea.form-input {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 24px;
}

.form-actions .btn-ghost {
    color: var(--color-text-secondary);
}

.form-actions .btn-ghost:hover {
    background: var(--color-bg-secondary);
}

.color-picker {
    display: flex;
    gap: 8px;
}

.color-btn {
    width: 32px;
    height: 32px;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s;
}

.color-btn:hover {
    transform: scale(1.15);
}

.color-btn.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(49,130,246,0.3);
}

/* ── Auth Pages ── */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary);
    padding: 24px;
}

.auth-card {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.auth-logo {
    font-family: var(--font-en);
    font-size: 32px;
    font-weight: 900;
    text-align: center;
    margin-bottom: 8px;
    color: var(--color-text);
}

.auth-subtitle {
    text-align: center;
    font-size: 15px;
    color: var(--color-text-tertiary);
    margin-bottom: 36px;
}

.auth-form .btn {
    width: 100%;
    margin-top: 8px;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 14px;
    color: var(--color-text-tertiary);
}

.auth-footer a {
    color: var(--color-primary);
    font-weight: 600;
}

.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: 500;
}

.alert-error {
    background: #FFF2F0;
    color: var(--color-danger);
    border: 1px solid #FFD4CF;
}

.alert-success {
    background: #F0FFF4;
    color: var(--color-success);
    border: 1px solid #C6F6D5;
}

/* ── Admin Dashboard ── */
/* Admin page: force nav to dark text (white background) */
.admin-layout ~ .nav,
.admin-layout .nav,
body:has(.admin-layout) .nav {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
}

body:has(.admin-layout) .logo-white {
    display: none;
}

body:has(.admin-layout) .logo-black {
    display: block;
}

body:has(.admin-layout) .nav-link {
    color: var(--color-text-secondary);
}

body:has(.admin-layout) .nav-link:hover {
    color: var(--color-text);
    background: var(--color-bg-secondary);
}

body:has(.admin-layout) .nav-user {
    color: var(--color-text-secondary);
}

body:has(.admin-layout) .btn-ghost {
    color: var(--color-text-secondary);
}

body:has(.admin-layout) .btn-ghost:hover {
    background: var(--color-bg-secondary);
}

body:has(.admin-layout) .nav-toggle {
    color: var(--color-text);
}

.admin-layout {
    display: flex;
    min-height: 100vh;
    padding-top: var(--nav-height);
}

.admin-sidebar {
    width: 240px;
    background: var(--color-bg);
    border-right: 1px solid var(--color-border);
    padding: 24px 16px;
    position: fixed;
    top: var(--nav-height);
    bottom: 0;
    overflow-y: auto;
}

.admin-sidebar-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-quaternary);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 8px 12px;
    margin-bottom: 4px;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    margin-bottom: 2px;
}

.admin-nav-item:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text);
}

.admin-nav-item.active {
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
}

.admin-main {
    flex: 1;
    margin-left: 240px;
    padding: 32px;
    background: var(--color-bg-secondary);
}

.admin-header {
    margin-bottom: 32px;
}

.admin-header h1 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 4px;
}

.admin-header p {
    font-size: 15px;
    color: var(--color-text-tertiary);
}

.admin-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--color-border-light);
}

.stat-card .stat-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-text);
    font-family: var(--font-en);
}

.stat-card .stat-label {
    font-size: 14px;
    color: var(--color-text-tertiary);
    margin-top: 4px;
}

/* ── Table ── */
.table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.data-table th {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.data-table td {
    padding: 14px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
}

.data-table tr:hover td {
    background: var(--color-bg-secondary);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .admin-sidebar {
        display: none;
    }
    .admin-main {
        margin-left: 0;
    }
}

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

    .nav-toggle {
        display: flex;
    }

    .nav-user {
        display: none;
    }

    .section {
        padding: 80px 0;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-logo-box {
        max-width: 240px;
        margin: 0 auto;
    }

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

    .org-chart {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .org-chart > .org-row,
    .org-chart > .org-row.org-lines,
    .org-chart > .org-row.org-branch-line,
    .org-chart > .org-row.org-lines-single {
        min-width: 700px;
    }

    .org-box {
        font-size: 11px;
        padding: 10px 12px;
    }

    .org-root {
        font-size: 20px;
        padding: 14px 28px;
        max-width: 150px;
    }

    .org-lines, .org-lines-single, .org-branch-line {
        height: 14px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .padlet-column {
        flex: 0 0 280px;
        min-width: 280px;
    }

    .auth-card {
        padding: 32px 24px;
    }

    .join-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .hero-title {
        font-size: 56px;
    }

    .container {
        padding: 0 16px;
    }
}