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

:root {
    --primary-color: #2c5f7a;
    --primary-dark: #1e4559;
    --primary-light: #4a8db7;
    --secondary-color: #5a9a5a;
    --secondary-dark: #4a7a4a;
    --accent-color: #e8a838;
    --danger-color: #d9534f;
    --warning-color: #f0ad4e;
    --success-color: #5cb85c;
    --info-color: #5bc0de;
    --text-primary: #333;
    --text-secondary: #666;
    --text-light: #999;
    --bg-primary: #fff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e9ecef;
    --border-color: #ddd;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-dark);
}

/* Login Page Styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.login-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 420px;
    padding: 40px;
}

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

.login-header h1 {
    color: var(--primary-color);
    font-size: 28px;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-form .form-group {
    margin-bottom: 24px;
}

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

.login-form input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 16px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 95, 122, 0.1);
}

.help-text {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.login-footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-secondary);
}

/* Alert Styles */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.alert-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    vertical-align: middle;
    cursor: pointer;
    border: none;
    border-radius: var(--radius-md);
    transition: all 0.2s;
}

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

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

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

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

.btn-block {
    display: block;
    width: 100%;
}

.text-center {
    text-align: center;
}

.mt-3 {
    margin-top: 1rem;
}