:root {
    --panel-sidebar-width: 260px;
    --panel-header-height: 70px;
    --panel-bg: #0f111a;
    --panel-card-bg: #161925;
    --panel-sidebar-bg: #121520;
    --panel-accent: #77acff;
    --panel-accent-glow: rgba(119, 172, 255, 0.3);
    --panel-text: #e0e0e0;
    --panel-text-muted: #9499b0;
    --panel-border: rgba(255, 255, 255, 0.05);
    --panel-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.panel-body {
    background-color: var(--panel-bg);
    color: var(--panel-text);
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Sidebar */
.panel-sidebar {
    width: var(--panel-sidebar-width);
    height: 100vh;
    background: var(--panel-sidebar-bg);
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    border-right: 1px solid var(--panel-border);
    transition: transform 0.3s ease;
}

.panel-sidebar-logo {
    height: var(--panel-header-height);
    display: flex;
    align-items: center;
    padding: 0 25px;
    border-bottom: 1px solid var(--panel-border);
}

.panel-sidebar-logo img {
    height: 35px;
}

.panel-sidebar-nav {
    padding: 20px 0;
}

.panel-nav-item {
    display: flex;
    align-items: center;
    padding: 12px 25px;
    color: var(--panel-text-muted);
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.panel-nav-item i {
    width: 25px;
    font-size: 18px;
    margin-right: 15px;
}

.panel-nav-item:hover, .panel-nav-item.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.03);
    border-left-color: var(--panel-accent);
}

.panel-nav-item.active i {
    color: var(--panel-accent);
}

/* Header */
.panel-header {
    height: var(--panel-header-height);
    background: var(--panel-sidebar-bg);
    position: fixed;
    top: 0;
    left: var(--panel-sidebar-width);
    right: 0;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    border-bottom: 1px solid var(--panel-border);
}

.panel-header-user {
    display: flex;
    align-items: center;
    gap: 15px;
}

.panel-user-info {
    text-align: right;
}

.panel-user-name {
    display: block;
    font-weight: 600;
    font-size: 14px;
}

.panel-user-balance {
    display: block;
    font-size: 12px;
    color: var(--panel-accent);
}

.panel-user-avatar {
    width: 40px;
    height: 40px;
    background: var(--panel-card-bg);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--panel-accent);
}

/* Main Content */
.panel-main {
    margin-left: var(--panel-sidebar-width);
    margin-top: var(--panel-header-height);
    padding: 30px;
    flex: 1;
}

.panel-page-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Cards & Sections */
.panel-card {
    background: var(--panel-card-bg);
    border-radius: 12px;
    border: 1px solid var(--panel-border);
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: var(--panel-shadow);
}

.panel-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--panel-border);
    padding-bottom: 15px;
}

.panel-card-title {
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.panel-card-title i {
    color: var(--panel-accent);
}

/* Dashboard Summary Cards */
.panel-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--panel-card-bg);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--panel-border);
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    background: rgba(119, 172, 255, 0.1);
    color: var(--panel-accent);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-content .stat-value {
    display: block;
    font-size: 20px;
    font-weight: 700;
}

.stat-content .stat-label {
    display: block;
    font-size: 13px;
    color: var(--panel-text-muted);
}

/* Buttons */
.btn-panel {
    background: var(--panel-accent);
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-panel:hover {
    filter: brightness(1.1);
    box-shadow: 0 0 15px var(--panel-accent-glow);
}

.btn-panel-outline {
    background: transparent;
    border: 1px solid var(--panel-border);
    color: var(--panel-text);
}

.btn-panel-outline:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Forms in Panel */
.panel-form-group {
    margin-bottom: 20px;
}

.panel-form-group label {
    display: block;
    font-size: 13px;
    margin-bottom: 8px;
    color: var(--panel-text-muted);
}

.panel-control {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    padding: 12px 15px;
    color: #fff;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s ease;
}

.panel-control:focus {
    border-color: var(--panel-accent);
}

/* Tables */
.panel-table {
    width: 100%;
    border-collapse: collapse;
}

.panel-table th {
    text-align: left;
    padding: 15px;
    font-size: 13px;
    color: var(--panel-text-muted);
    border-bottom: 2px solid var(--panel-border);
}

.panel-table td {
    padding: 15px;
    border-bottom: 1px solid var(--panel-border);
    font-size: 14px;
}

.badge-status {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-completed { background: rgba(46, 204, 113, 0.1); color: #2ecc71; }
.badge-pending { background: rgba(241, 196, 15, 0.1); color: #f1c40f; }
.badge-failed { background: rgba(231, 76, 60, 0.1); color: #e74c3c; }

/* Panel Footer */
.panel-footer {
    margin-left: var(--panel-sidebar-width);
    border-top: 1px solid var(--panel-border);
    background: var(--panel-sidebar-bg);
}

.panel-footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 30px;
    max-width: 100%;
}

.panel-footer__left {
    display: flex;
    align-items: center;
    gap: 0;
    font-size: 13px;
    color: var(--panel-text-muted);
}

.panel-footer__copy {
    font-weight: 600;
    color: rgba(255, 255, 255, 0.4);
}

.panel-footer__sep {
    margin: 0 8px;
    opacity: 0.3;
}

.panel-footer__text {
    opacity: 0.5;
    font-size: 12px;
}

.panel-footer__right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.panel-footer__link {
    font-size: 12px;
    color: var(--panel-text-muted);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 6px;
    border: 1px solid var(--panel-border);
    transition: all 0.2s ease;
}

.panel-footer__link:hover {
    color: var(--panel-accent);
    border-color: var(--panel-accent);
    background: rgba(119, 172, 255, 0.05);
}

/* Responsive */
@media (max-width: 992px) {
    .panel-sidebar {
        transform: translateX(-100%);
    }
    .panel-header, .panel-main, .panel-footer {
        left: 0;
        margin-left: 0;
    }
}