:root {
    --primary-color: #2d60ff;
    --secondary-color: #fe5c73;
    --bg-color: #f5f7fa;
    --sidebar-bg: #ffffff;
    --text-color: #343c6a;
    --text-light: #718ebf;
    --border-color: #e6eff5;
    --card-bg: #ffffff;
    --success-color: #16dbcc;
    --warning-color: #f5b97f;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px;
    position: fixed;
    height: 100%;
}

.sidebar-logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-menu {
    list-style: none;
    padding: 0;
}

.sidebar-menu li {
    margin-bottom: 10px;
}

.sidebar-menu a {
    text-decoration: none;
    color: var(--text-light);
    font-size: 16px;
    display: flex;
    align-items: center;
    padding: 12px 15px;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    color: var(--primary-color);
    background-color: rgba(45, 96, 255, 0.05);
}

.sidebar-menu i {
    margin-right: 15px;
    font-size: 20px;
}

/* Main Content */
.main-content {
    margin-left: 250px;
    padding: 30px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.header-title {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-color);
}

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

.user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text-light);
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
    margin-bottom: 25px;
}

.card-header {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-color);
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    color: var(--text-color);
    background-color: #fff;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn {
    padding: 12px 25px;
    border-radius: 10px;
    border: none;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: #1a4bd6;
}

.btn-danger {
    background-color: var(--secondary-color);
    color: #fff;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

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

th,
td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    color: var(--text-light);
    font-weight: 500;
    font-size: 14px;
}

td {
    color: var(--text-color);
    font-size: 15px;
}

/* Login Page */
.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    width: 100%;
    background-color: var(--bg-color);
}

.login-card {
    width: 400px;
    padding: 40px;
    text-align: center;
    margin: auto;
}

.login-title {
    font-size: 24px;
    margin-bottom: 30px;
    color: var(--primary-color);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
        padding: 10px;
    }

    .sidebar-logo span,
    .sidebar-menu span {
        display: none;
    }

    .main-content {
        margin-left: 70px;
    }
}