* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: #0f172a;
    color: #e2e8f0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: #1e293b;
    border-bottom: 2px solid #38bdf8;
}

.navbar-brand {
    font-size: 1.4rem;
    font-weight: bold;
}

.navbar-brand span {
    color: #38bdf8;
}

.navbar nav a {
    color: #e2e8f0;
    text-decoration: none;
    margin-left: 1.2rem;
}

.navbar nav a:hover {
    color: #38bdf8;
}

.navbar-user {
    margin-left: 1.2rem;
    color: #94a3b8;
}

main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

.hero {
    text-align: center;
    padding: 3rem 1rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    color: #38bdf8;
}

.subtitle {
    font-size: 1.2rem;
    color: #cbd5e1;
}

.details {
    margin: 1rem 0;
    color: #94a3b8;
}

.cta {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.75rem 1.5rem;
    background: #38bdf8;
    color: #0f172a;
    font-weight: bold;
    text-decoration: none;
    border-radius: 6px;
}

.cta:hover {
    background: #0ea5e9;
}

.welcome {
    margin-top: 1.5rem;
    color: #4ade80;
}

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

.card {
    background: #1e293b;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #334155;
}

.card h2 {
    margin-top: 0;
    color: #38bdf8;
    font-size: 1.2rem;
}

.card a {
    color: #38bdf8;
}

.login-section {
    max-width: 400px;
    margin: 3rem auto;
    text-align: center;
}

.login-form {
    display: flex;
    flex-direction: column;
    text-align: left;
    margin-top: 1.5rem;
}

.login-form label {
    margin-top: 1rem;
    margin-bottom: 0.3rem;
}

.login-form input {
    padding: 0.6rem;
    border-radius: 4px;
    border: 1px solid #334155;
    background: #0f172a;
    color: #e2e8f0;
}

.login-form button {
    margin-top: 1.5rem;
    padding: 0.7rem;
    background: #38bdf8;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
}

.login-form button:hover {
    background: #0ea5e9;
}

.error {
    color: #f87171;
}

.hint {
    margin-top: 1rem;
    color: #94a3b8;
    font-size: 0.9rem;
}

footer {
    text-align: center;
    padding: 1.5rem;
    color: #64748b;
    font-size: 0.85rem;
}