:root {
    --bg-color: #000000;
    --text-color: #ffffff;
    --text-secondary: #b0b0b0;
    --card-bg: #23262f;
    --card-border: rgba(255,255,255,0.07);
    --primary: #85d6ff;
    --primary-hover: #1976d2;
    --accent-yellow: #00eeff;
    --accent-green: #0ecb81;
    --accent-red: #f6465d;
    --accent-blue: #007aff;
    --danger: #ff4d4d;
    --warning: #f0b90b;
    --shadow: rgba(255,255,255,0.08);
    --radius: 14px;
    --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    width: 100%;
    font-family: 'DM Sans', sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
    -webkit-user-select: none;
    user-select: none;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.admin-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--card-bg);
    box-shadow: 0 2px 12px var(--shadow);
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    padding: 0 2rem;
    z-index: 1000;
}

.header-left h1 {
    font-family: 'Syne', sans-serif;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.header-right {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 1rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: all var(--transition);
}

.menu-toggle:hover {
    background: rgba(255,255,255,0.1);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-badge {
    position: relative;
    cursor: pointer;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: rgba(133,214,255,0.1);
    border: 1px solid rgba(133,214,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1rem;
    transition: all var(--transition);
}

.header-badge:hover {
    background: rgba(133,214,255,0.2);
}

.badge-dot {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-red);
    border: 2px solid var(--card-bg);
}

.admin-avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--accent-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 0.85rem;
    color: #000;
    cursor: pointer;
    letter-spacing: 0.03em;
}

.sidebar {
    position: fixed;
    top: 4px;
    left: 0;
    bottom: 0;
    width: 260px;
    background: var(--card-bg);
    box-shadow: 2px 0 12px var(--shadow);
    display: grid;
    grid-template-rows: auto 1fr auto;
    z-index: 999;
    overflow-y: auto;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 2rem 0.7rem 0.5rem;
}

.nav-section-label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.25);
    padding: 0.5rem 1.2rem 0.25rem;
    margin-top: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1.2rem;
    border-radius: var(--radius);
    color: var(--text-secondary);
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: background var(--transition), color var(--transition), transform var(--transition);
    text-decoration: none;
}

.nav-link:hover {
    background: rgba(133,214,255,0.08);
    color: var(--primary);
    transform: translateX(4px);
}

.nav-link.active {
    background: var(--primary);
    color: #000;
    font-weight: 600;
}

.nav-link i {
    font-size: 1.1rem;
    min-width: 1.4rem;
}

.nav-link .nav-count {
    margin-left: auto;
    font-size: 0.72rem;
    font-weight: 700;
    background: rgba(246,70,93,0.2);
    color: var(--accent-red);
    padding: 2px 7px;
    border-radius: 20px;
}

.nav-link.active .nav-count {
    background: rgba(0,0,0,0.2);
    color: #000;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.btn-logout {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.7rem;
    padding: 0.85rem 1rem;
    border-radius: var(--radius);
    background: rgba(246,70,93,0.1);
    border: 1px solid rgba(246,70,93,0.2);
    color: var(--accent-red);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition);
}

.btn-logout:hover {
    background: rgba(246,70,93,0.2);
}

.mobile-menu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 998;
    opacity: 0;
    transition: opacity var(--transition);
}

.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
}

.main-content {
    position: fixed;
    top: 64px;
    left: 260px;
    right: 0;
    bottom: 0;
    overflow-y: auto;
    padding: 2rem;
    background: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(133,214,255,0.05) 0%, transparent 60%);
}

.main-content[data-loading="true"] {
    opacity: 0;
    pointer-events: none;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header-left h2 {
    font-family: 'Syne', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-color);
}

.page-header-left p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.2rem;
}

.page-header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.2rem;
    border-radius: 10px;
    background: var(--primary);
    color: #000;
    border: none;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary:hover {
    background: #a0dfff;
    transform: translateY(-1px);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.2rem;
    border-radius: 10px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid rgba(255,255,255,0.12);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

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

.time-badge {
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: var(--card-bg);
    padding: 0.5rem 0.9rem;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.time-badge i {
    color: var(--accent-green);
    font-size: 0.65rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

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

.kpi-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--card-border);
    padding: 1.25rem 1.4rem;
    position: relative;
    overflow: hidden;
    transition: border-color var(--transition), transform var(--transition);
    animation: slideUp 0.4s ease both;
}

.kpi-card:hover {
    border-color: rgba(133,214,255,0.2);
    transform: translateY(-2px);
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--kpi-color, var(--primary)), transparent);
    opacity: 0.6;
}

.kpi-card:nth-child(1) { --kpi-color: var(--primary); animation-delay: 0.05s; }
.kpi-card:nth-child(2) { --kpi-color: var(--accent-green); animation-delay: 0.1s; }
.kpi-card:nth-child(3) { --kpi-color: var(--warning); animation-delay: 0.15s; }
.kpi-card:nth-child(4) { --kpi-color: var(--accent-red); animation-delay: 0.2s; }

@keyframes slideUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.kpi-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.kpi-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    background: rgba(255,255,255,0.05);
    color: var(--kpi-color, var(--primary));
}

.kpi-trend {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.78rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 6px;
}

.kpi-trend.up {
    color: var(--accent-green);
    background: rgba(14,203,129,0.1);
}

.kpi-trend.down {
    color: var(--accent-red);
    background: rgba(246,70,93,0.1);
}

.kpi-value {
    font-family: 'Syne', sans-serif;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-color);
    letter-spacing: -0.02em;
    line-height: 1;
}

.kpi-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.35rem;
    font-weight: 400;
}

.kpi-sub {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.kpi-sub span {
    color: var(--text-color);
    font-weight: 500;
}

.mid-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.chart-card,
.quick-stats-card,
.activity-card,
.pending-card,
.ticker-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--card-border);
}

.chart-card,
.quick-stats-card {
    padding: 1.4rem;
}

.chart-card {
    animation: slideUp 0.4s ease 0.25s both;
}

.quick-stats-card {
    display: flex;
    flex-direction: column;
    gap: 0;
    animation: slideUp 0.4s ease 0.3s both;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.card-title {
    font-family: 'Syne', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-color);
}

.card-subtitle {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
}

.chart-tabs {
    display: flex;
    gap: 0.25rem;
}

.chart-tab {
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    color: var(--text-secondary);
    background: transparent;
    transition: all var(--transition);
}

.chart-tab.active {
    background: var(--primary);
    color: #000;
}

.chart-tab:hover:not(.active) {
    background: rgba(255,255,255,0.07);
    color: var(--text-color);
}

.bar-chart {
    width: 100%;
    overflow: visible;
}

.bar-chart .bar {
    transition: opacity 0.2s;
    cursor: pointer;
}

.bar-chart .bar:hover {
    opacity: 0.8;
}

.bar-chart .axis-label {
    font-family: 'DM Sans', sans-serif;
}

.chart-legend {
    display: flex;
    gap: 1.25rem;
    margin-top: 0.75rem;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.qs-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.qs-item:last-child {
    border-bottom: none;
}

.qs-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.qs-icon {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
}

.qs-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-color);
}

.qs-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.qs-right {
    text-align: right;
}

.qs-value {
    font-family: 'Syne', sans-serif;
    font-size: 1rem;
    font-weight: 700;
}

.qs-change {
    font-size: 0.72rem;
    margin-top: 1px;
}

.qs-change.up {
    color: var(--accent-green);
}

.qs-change.down {
    color: var(--accent-red);
}

.bottom-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.activity-card,
.pending-card {
    padding: 1.4rem;
}

.activity-card {
    animation: slideUp 0.4s ease 0.35s both;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.85rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    position: relative;
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-dot {
    width: 32px;
    height: 32px;
    border-radius: 9px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.activity-body {
    flex: 1;
    min-width: 0;
}

.activity-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-color);
    line-height: 1.35;
}

.activity-title strong {
    color: var(--primary);
    font-weight: 600;
}

.activity-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.2rem;
}

.activity-amount {
    font-family: 'Syne', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    white-space: nowrap;
    flex-shrink: 0;
}

.pending-card {
    animation: slideUp 0.4s ease 0.4s both;
}

.pending-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.25rem;
}

.pending-item {
    background: rgba(255,255,255,0.03);
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.06);
    padding: 0.85rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: border-color var(--transition);
}

.pending-item:hover {
    border-color: rgba(133,214,255,0.2);
}

.pending-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pending-avatar {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, #1a1f2e, #2d3748);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    flex-shrink: 0;
}

.pending-name {
    font-size: 0.85rem;
    font-weight: 500;
}

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

.pending-right {
    text-align: right;
}

.pending-amount {
    font-family: 'Syne', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--warning);
}

.pending-time {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

.view-all-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    margin-top: 0.75rem;
    font-size: 0.8rem;
    color: var(--primary);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity var(--transition);
}

.view-all-link:hover {
    opacity: 1;
}

.ticker-card {
    padding: 1.4rem;
    animation: slideUp 0.4s ease 0.45s both;
    margin-bottom: 1.5rem;
}

.ticker-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.ticker-item {
    background: rgba(255,255,255,0.03);
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.06);
    padding: 0.75rem 0.9rem;
    transition: border-color var(--transition);
}

.ticker-item:hover {
    border-color: rgba(133,214,255,0.25);
}

.ticker-symbol {
    font-family: 'Syne', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-color);
}

.ticker-price {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-color);
    margin-top: 0.25rem;
}

.ticker-change {
    font-size: 0.73rem;
    font-weight: 500;
    margin-top: 0.15rem;
}

.ticker-change.up {
    color: var(--accent-green);
}

.ticker-change.down {
    color: var(--accent-red);
}

.main-content::-webkit-scrollbar {
    width: 5px;
}

.main-content::-webkit-scrollbar-track {
    background: transparent;
}

.main-content::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
}

@media (max-width: 1200px) {
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 900px) {
    .mid-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        top: 0;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        left: 0;
    }

    .menu-toggle {
        display: block;
    }

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

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

    .main-content {
        padding: 1rem;
    }

    .page-header {
        margin-bottom: 1.25rem;
    }

    .page-header-right .btn-outline {
        display: none;
    }
}

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

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