:root {
    --primary-color: #2c3e50;
    --accent-color: #3498db;
    --bg-color: #f4f7f6;
    --text-color: #333;
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

a {
    text-decoration: none;
    color: white;
}

a:visited {
    text-decoration: none;
    color: white;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

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

.logo-icon {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.login-header h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.login-header p {
    color: #7f8c8d;
    font-size: 0.9rem;
}

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

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary-color);
}

.input-field {
    position: relative;
    display: flex;
    align-items: center;
}

.input-field i {
    position: absolute;
    left: 15px;
    color: #bdc3c7;
}

.input-field input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 1px solid #ddd;
    border-radius: 6px;
    outline: none;
    transition: border-color 0.3s;
}

.input-field input:focus {
    border-color: var(--accent-color);
}

.options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    margin-bottom: 25px;
}

.options a {
    color: var(--accent-color);
    text-decoration: none;
}

.btn-login {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-login:hover {
    background-color: #1a252f;
}