/* Portal — Base styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: #2c3e50;
    color: #fff;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

nav a {
    color: #ecf0f1;
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 500;
}

nav a:hover {
    color: #3498db;
}

main {
    flex: 1;
    max-width: 960px;
    width: 100%;
    margin: 2rem auto;
    padding: 0 1rem;
}

.hero {
    text-align: center;
    padding: 3rem 1rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.hero h2 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.hero p {
    color: #666;
    font-size: 1.1rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.card h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.card p {
    color: #666;
}

.info {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    text-align: center;
}

.info code {
    background: #ecf0f1;
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 0.9em;
}

.login-form {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    max-width: 400px;
    margin: 0 auto;
}

.login-form label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 600;
    color: #2c3e50;
}

.login-form input {
    width: 100%;
    padding: 0.5rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.login-form input:disabled {
    background: #f5f5f5;
    color: #999;
}

.login-form button {
    width: 100%;
    padding: 0.75rem;
    background: #3498db;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
}

.login-form button:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
}

footer {
    text-align: center;
    padding: 1.5rem;
    color: #999;
    font-size: 0.85rem;
}

a {
    color: #3498db;
}