:root {
    --primary-blue: #2563EB;
    --primary-blue-hover: #1D4ED8;
    --primary-green: #10B981;
    --primary-green-hover: #059669;
    --bg-color: #F3F4F6;
    --surface-color: #FFFFFF;
    --text-main: #1F2937;
    --text-muted: #6B7280;
    --border-color: #E5E7EB;
    --sidebar-bg: #1E293B;
    --sidebar-text: #F8FAFC;
    --sidebar-hover: #334155;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
}

.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--sidebar-hover);
}

.sidebar-header h2 {
    color: var(--primary-green);
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.sidebar-header p {
    font-size: 0.8rem;
    color: #94A3B8;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
}

.nav-item {
    display: block;
    padding: 12px 20px;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: background-color 0.2s;
}

.nav-item:hover, .nav-item.active {
    background-color: var(--sidebar-hover);
    border-left: 4px solid var(--primary-green);
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--sidebar-hover);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.avatar {
    width: 32px;
    height: 32px;
    background-color: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.top-header {
    background-color: var(--surface-color);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.top-header h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

.header-actions {
    display: flex;
    gap: 10px;
}

/* Buttons */
.btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: white;
}

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

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

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

.btn-sm {
    padding: 4px 8px;
    font-size: 0.75rem;
}

/* Views */
.views {
    padding: 30px;
}

.view {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Cards & Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--surface-color);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border-top: 4px solid var(--primary-blue);
}

.stat-card h3 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.text-green {
    color: var(--primary-green);
}

/* Charts */
.charts-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
}

.chart-card {
    background: var(--surface-color);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Tables */
.action-bar {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.input-search {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    width: 300px;
}

.table-container {
    background: var(--surface-color);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    overflow: hidden;
}

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

.data-table th, .data-table td {
    padding: 12px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: #F8FAFC;
    font-weight: 600;
    color: var(--text-muted);
}

.badge {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-active {
    background-color: #D1FAE5;
    color: #065F46;
}

.badge-done {
    background-color: #E2E8F0;
    color: #475569;
}

/* Forms */
.form-container {
    background: var(--surface-color);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    max-width: 600px;
    margin: 0 auto;
}

.form-container h2 {
    margin-bottom: 20px;
    color: var(--primary-blue);
    border-bottom: 2px solid var(--bg-color);
    padding-bottom: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.rating-group {
    margin-bottom: 20px;
    background: var(--bg-color);
    padding: 15px;
    border-radius: 6px;
}

.rating-group h3 {
    font-size: 1rem;
    margin-bottom: 10px;
}

.radio-scale {
    display: flex;
    gap: 15px;
}

.radio-scale label {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
}