:root {
    --primary-color: #4a90e2;
    --secondary-color: #357abd;
    --background-color: #f4f7f6;
    --text-color: #333;
    --white: #ffffff;
    --error: #e74c3c;
    --success: #2ecc71;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navigation */
.navbar {
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    margin-left: 20px;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a.btn-logout {
    color: var(--error);
}

/* Container */
.container {
    max-width: 1200px;
    min-width: 800px;
    margin: 2rem auto;
    padding: 0 20px;
    flex: 1;
}

/* Forms */
.auth-wrapper {
    max-width: 400px;
    margin: 4rem auto;
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

h2 {
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
    text-align: center;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    font-size: 1rem;
    transition: background 0.3s;
}

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

.alert {
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 1rem;
    text-align: center;
}

.alert-error {
    background-color: #fde8e7;
    color: var(--error);
    border: 1px solid #fadbd8;
}

.alert-success {
    background-color: #eafaf1;
    color: var(--success);
    border: 1px solid #d5f5e3;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    margin-top: 1rem;
}

th,
td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

th {
    background-color: var(--primary-color);
    color: var(--white);
}

tr:hover {
    background-color: #f1f1f1;
}

.badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.badge-admin {
    background-color: #e8daef;
    color: #8e44ad;
}

.badge-user {
    background-color: #d6eaf8;
    color: #2980b9;
}

.footer {
    text-align: center;
    padding: 1.5rem;
    background: var(--white);
    color: #666;
    margin-top: auto;
}


/* Dropdown menu */
.dropbtn {
    background-color: #ffffff;
    color: black;
    padding: 16px;
    font-size: 16px;
    border: none;
    cursor: pointer;
}

.dropbtn:hover,
.dropbtn:focus {
    background-color: #ffffff;
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    overflow: auto;
    box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
}

.dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

.dropdown a:hover {
    background-color: #f1f1f1
}

.show {
    display: block;
}