:root {
    --primary-color: #0083B0;
    --primary-gradient: linear-gradient(135deg, #00b4db, #0083B0);
    --primary-light: #00b4db;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --error-bg: #fee2e2;
    --error-border: #fecaca;
    --error-text: #dc2626;
    --success-bg: #dcfce7;
    --success-border: #bbf7d0;
    --success-text: #16a34a;
    --footer-border: rgba(0, 0, 0, 0.1);
    --footer-text: #7f8c8d;
    --copyright-text: #95a5a6;
    --input-border: #e0e0e0;
    --separator-color: #bdc3c7;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    background: var(--primary-gradient);
    min-height: 100vh;
}

.container {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.logo {
    text-align: center;
    margin-bottom: 30px;
}

.logo h1 {
    color: var(--text-dark);
    font-size: 28px;
    margin: 0;
    font-weight: 600;
}

.logo p {
    color: var(--text-light);
    margin: 5px 0 0 0;
    font-size: 16px;
}

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

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

input {
    width: 100%;
    padding: 12px;
    margin-top: 5px;
    border: 2px solid var(--input-border);
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
}

button {
    width: 100%;
    padding: 12px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 131, 176, 0.3);
}

.error {
    background-color: var(--error-bg);
    color: var(--error-text);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    border: 1px solid var(--error-border);
}

.success {
    background-color: var(--success-bg);
    color: var(--success-text);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    border: 1px solid var(--success-border);
}

.footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--footer-border);
    color: var(--footer-text);
    font-size: 13px;
}

.footer p {
    margin: 8px 0;
    line-height: 1.5;
}

.copyright {
    color: var(--copyright-text);
    font-size: 12px;
}

.powered-by {
    color: var(--primary-color);
    font-weight: 500;
    position: relative;
    padding-right: 5px;
}

.navtech {
    color: var(--text-dark);
    font-weight: 600;
    position: relative;
    padding-left: 5px;
}

.powered-by::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 12px;
    background-color: var(--separator-color);
}

/* Navigation styles */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 15px 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    color: var(--text-dark);
    font-size: 20px;
    font-weight: 600;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Card styles */
.card {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Table styles */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

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

.table th {
    background-color: rgba(0, 131, 176, 0.1);
    color: var(--text-dark);
    font-weight: 600;
}

.table tr:hover {
    background-color: rgba(0, 131, 176, 0.05);
}

/* Utility classes */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.p-20 {
    padding: 20px;
}