:root {
    --primary: #6366F1;
    --primary-hover: #4F46E5;
    --bg-main: #F8FAFC;
    --bg-white: #FFFFFF;
    --border-color: #E2E8F0;
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --text-light: #94A3B8;
    --sidebar-global: #0F172A;
    --sidebar-sub: #F1F5F9;
    --status-online: #10B981;
    --status-away: #F59E0B;
    --status-offline: #94A3B8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
}

.workspace-wrapper {
    display: grid;
    grid-template-columns: 72px 240px 1fr;
    height: 100vh;
}

/* 1´Ü ±Û·Î¹ú ¹Ù */
.global-sidebar {
    background-color: var(--sidebar-global);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 0;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.brand-logo {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #6366F1, #8B5CF6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    font-weight: 800;
    font-size: 1.25rem;
    margin-bottom: 28px;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.global-nav {
    display: flex;
    flex-direction: column;
    gap: 14px;
    flex: 1;
}

.nav-item {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    text-decoration: none;
    font-size: 1.15rem;
    transition: all 0.2s ease;
    cursor: pointer;
}

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

.nav-item.active {
    background-color: var(--primary);
    color: #FFFFFF;
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
}

.global-bottom {
    margin-top: auto;
}

/* 2´Ü ä³Î/ÆÀ ¸ñ·Ï */
.channel-sidebar {
    background-color: var(--sidebar-sub);
    border-right: 1px solid var(--border-color);
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.channel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.channel-header h2 {
    font-size: 0.95rem;
    font-weight: 700;
}

.badge-plan {
    background: #E0E7FF;
    color: var(--primary);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 700;
}

.section-heading {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.btn-icon-add {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1;
}

.channel-list, .user-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.channel-item, .user-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: background 0.15s ease, color 0.15s ease;
}

.channel-item:hover, .user-item:hover {
    background-color: #E2E8F0;
    color: var(--text-primary);
}

.channel-item.active {
    background-color: #E2E8F0;
    color: var(--text-primary);
    font-weight: 700;
}

.channel-item .prefix {
    margin-right: 8px;
    color: var(--text-light);
}

.unread-pill {
    margin-left: auto;
    background-color: var(--primary);
    color: #FFFFFF;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 1px 7px;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
    flex-shrink: 0;
}
.status-indicator.online { background-color: var(--status-online); }
.status-indicator.away { background-color: var(--status-away); }
.status-indicator.offline { background-color: var(--status-offline); }

/* 3´Ü ¸ÞÀÎ ¿µ¿ª */
.main-stage {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: var(--bg-main);
}

.main-topbar {
    height: 64px;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    flex-shrink: 0;
}

.search-box {
    position: relative;
}

.search-box input {
    width: 380px;
    padding: 9px 14px 9px 36px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: #F8FAFC;
    font-size: 0.85rem;
    outline: none;
    transition: border 0.2s;
}

.search-box input:focus {
    border-color: var(--primary);
    background: #FFFFFF;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.85rem;
    color: var(--text-light);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.notification-btn {
    background: none;
    border: 1px solid var(--border-color);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    font-size: 1rem;
}

.notification-dot {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 7px;
    height: 7px;
    background: #EF4444;
    border-radius: 50%;
    border: 1px solid #FFFFFF;
}

.current-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-left: 12px;
    border-left: 1px solid var(--border-color);
}

.current-profile .avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #E0E7FF;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
}

.profile-info {
    display: flex;
    flex-direction: column;
}

.profile-name {
    font-size: 0.85rem;
    font-weight: 600;
}

.profile-role {
    font-size: 0.72rem;
    color: var(--text-secondary);
}

/* º»¹® ·¹À̾ƿô */
.content-body {
    flex: 1;
    display: grid;
    grid-template-columns: 1.8fr 1.2fr;
    gap: 20px;
    padding: 20px 28px 24px;
    overflow: hidden;
}

.chat-container {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

.chat-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-title h3 {
    font-size: 1rem;
    font-weight: 700;
}

.chat-title span {
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.message-stream {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.msg-item {
    display: flex;
    gap: 12px;
}

.msg-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #F1F5F9;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    font-weight: 700;
    flex-shrink: 0;
}

.msg-content {
    max-width: 80%;
}

.msg-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.msg-author {
    font-size: 0.85rem;
    font-weight: 600;
}

.msg-time {
    font-size: 0.72rem;
    color: var(--text-light);
}

.msg-bubble {
    background: #F8FAFC;
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.86rem;
    line-height: 1.5;
}

.chat-input-bar {
    padding: 14px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
    background: #FFFFFF;
}

.chat-input-bar input {
    flex: 1;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 0.85rem;
    outline: none;
    background: #F8FAFC;
}

.chat-input-bar input:focus {
    border-color: var(--primary);
    background: #FFFFFF;
}

.btn-send {
    background: var(--primary);
    color: #FFFFFF;
    border: none;
    border-radius: 8px;
    padding: 0 18px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease;
}

.btn-send:hover {
    background: var(--primary-hover);
}

.widget-pane {
    display: flex;
    flex-direction: column;
    gap: 18px;
    overflow-y: auto;
}

.widget-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

.widget-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.task-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.task-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #F8FAFC;
}

.task-info h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 3px;
}

.task-info span {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.tag-priority {
    font-size: 0.72rem;
    padding: 3px 8px;
    border-radius: 4px;
    font-weight: 700;
}
.tag-priority.High { background: #FEE2E2; color: #DC2626; }
.tag-priority.Medium { background: #FEF3C7; color: #D97706; }
.tag-priority.Low { background: #ECFDF5; color: #059669; }

.stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.stat-box {
    background: #F8FAFC;
    border: 1px solid var(--border-color);
    padding: 14px;
    border-radius: 8px;
    text-align: center;
}

.stat-value {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 4px;
}