:root {
    --bg-sky: #87CEEB;
    --bg-light: #0099ff;
    --bg-panel: #3049ff;
    --bg-header: #003cff;
    --bg-hover: #3498DB;
    --bg-active: #2980B9;
    --border-color: #3498DB;
    --border-dark: #2980B9;
    --text-white: #ffffff;
    --text-dark: #2874A6;
    --text-light: #5DADE2;
    --text-sub: #D6EAF8;
    --chart-line-1: #2980B9;
    --chart-line-2: #3498DB;
    --chart-line-3: #1ABC9C;
    --chart-line-4: #E74C3C;
    --chart-line-5: #F39C12;
    --chart-line-6: #9B59B6;
    --chart-grid: #5DADE2;
    --chart-tick: #ffffff;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-sky);
    color: var(--text-white);
    overflow: hidden;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Topbar */
.topbar {
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    padding: 0 10px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.sidebar-toggle {
    background: transparent;
    border: none;
    color: var(--text-white);
    font-size: 18px;
    cursor: pointer;
    padding: 8px;
    margin-right: 10px;
    transition: background 0.1s;
}

.sidebar-toggle:hover {
    background: var(--bg-hover);
}

.topbar-left {
    display: flex;
    align-items: center;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.topbar-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-white);
    white-space: nowrap;
}

/* Main Layout */
.main-container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 300px;
    background: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    flex-shrink: 0;
    transition: width 0.3s ease;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.sidebar::-webkit-scrollbar {
    display: none;
}

.sidebar.collapsed {
    width: 0;
    border-right: none;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-grid {
    display: none;
}

.sidebar-section-header {
    color: var(--text-white);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 25px 20px 8px 20px;
}

.sidebar-divider {
    height: 1px;
    background: var(--text-white);
    margin: 0 20px 15px 20px;
    opacity: 0.5;
}

.sidebar-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    padding: 0 20px 20px 20px;
}

.sidebar-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-header);
    border: 2px solid transparent;
    padding: 15px 10px;
    text-decoration: none;
    transition: all 0.2s;
    min-height: 40px;
}

.sidebar-button:hover {
    background: var(--bg-hover);
    border-color: var(--text-white);
}

.sidebar-button.active {
    background: var(--bg-hover);
    border-color: var(--text-white);
    box-shadow: 0 0 10px rgba(0, 89, 255, 0.3);
}

.sidebar-button-icon {
    font-size: 32px;
    color: var(--text-white);
    margin-bottom: 10px;
}

.sidebar-button-text {
    font-size: 12px;
    color: var(--text-white);
    text-align: center;
    font-weight: 500;
}

/* Content Area */
.content {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    background: var(--bg-light);
}

.content-header {
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.content-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-white);
}

/* Cards/Panels */
.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    margin-bottom: 15px;
}

.panel-header {
    padding: 10px 15px;
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-dark);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-white);
}

.panel-body {
    padding: 15px;
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 15px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 15px;
}

/* Metrics */
.metric {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    padding: 15px;
}

.metric-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-white);
}

.metric-value-icon {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 32px;
    font-weight: 700;
    color: var(--text-white);
}

.metric-value-icon i {
    font-size: 28px;
    color: var(--text-white);
}

.metric-label {
    font-size: 12px;
    color: var(--text-white);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-sub {
    font-size: 11px;
    color: var(--text-sub);
}

/* Charts */
.chart-container {
    position: relative;
    height: 300px;
    margin: 15px 0;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

th {
    background: var(--bg-header);
    padding: 10px;
    text-align: left;
    font-weight: 600;
    color: var(--text-white);
    border-bottom: 1px solid var(--border-dark);
}

td {
    padding: 10px;
    border-bottom: 1px solid var(--bg-panel);
}

tr:hover td {
    background: var(--bg-header);
}

/* Buttons */
.btn {
    background: var(--bg-header);
    border: none;
    color: white;
    padding: 8px 16px;
    font-size: 13px;
    cursor: pointer;
    transition: background 0.1s;
}

.btn:hover {
    background: var(--border-dark);
}

.btn-secondary {
    background: var(--bg-panel);
}

.btn-secondary:hover {
    background: var(--bg-header);
}

/* Player controls */
.player-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.player-select-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 180px;
}

.player-select-group label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-sub);
}

.player-select {
    background: var(--bg-header);
    border: 1px solid var(--border-color);
    color: var(--text-white);
    border-radius: 4px;
    min-width: 100%;
}

.player-select:focus {
    border-color: var(--border-dark);
}

/* Forms */
input, select {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    color: var(--text-dark);
    padding: 8px 12px;
    font-size: 13px;
    width: 100%;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--border-dark);
}

/* Utility */
.text-blue {
    color: var(--border-dark);
}

.text-sub {
    color: var(--text-white);
}

.text-small {
    font-size: 12px;
}

.mt-10 {
    margin-top: 10px;
}

.mb-10 {
    margin-bottom: 10px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-panel);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bg-header);
}

/* Records Table */
.records-table {
    width: 100%;
    border-collapse: collapse;
    color: var(--text-white);
}

.records-table thead {
    background: var(--bg-panel);
}

.records-table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
}

.records-table td {
    padding: 10px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.records-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

.records-table tbody tr:last-child td {
    border-bottom: none;
}