* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Roboto, Arial, sans-serif;
    background: #0f1220;
    color: #e8e9f1;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: #151934;
    position: sticky;
    top: 0;
}

.navbar .brand {
    color: #fff;
    text-decoration: none;
    font-size: 1.4rem;
    font-weight: bold;
}

.navbar .brand span {
    color: #6c63ff;
}

.navbar nav a {
    color: #cfd0e0;
    text-decoration: none;
    margin-left: 1.5rem;
}

.navbar nav a:hover {
    color: #6c63ff;
}

.login-btn {
    border: 1px solid #6c63ff;
    padding: 0.4rem 1rem;
    border-radius: 6px;
}

.hero {
    text-align: center;
    padding: 5rem 2rem 4rem;
    background: linear-gradient(135deg, #1c1f3a, #0f1220);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.hero .subtitle {
    color: #b8b9d1;
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.hero-details {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
    color: #cfd0e0;
}

.cta {
    display: inline-block;
    background: #6c63ff;
    color: #fff;
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
}

.section {
    padding: 3rem 2rem;
}

.section.alt {
    background: #151934;
}

.section h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.card {
    background: #1c1f3a;
    padding: 1.2rem;
    border-radius: 10px;
    border: 1px solid #2a2e55;
}

.card h3 {
    margin: 0.4rem 0;
}

.card .role {
    color: #8f90b3;
    font-size: 0.9rem;
}

.tag {
    display: inline-block;
    background: #6c63ff;
    color: #fff;
    font-size: 0.75rem;
    padding: 0.15rem 0.6rem;
    border-radius: 12px;
}

.api-hint {
    text-align: center;
    color: #8f90b3;
    margin-top: 1.5rem;
}

.login-section {
    display: flex;
    justify-content: center;
    padding: 4rem 2rem;
}

.login-box {
    background: #1c1f3a;
    padding: 2rem;
    border-radius: 10px;
    width: 100%;
    max-width: 380px;
    text-align: center;
}

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

.login-box label {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #b8b9d1;
}

.login-box input {
    padding: 0.6rem;
    border-radius: 6px;
    border: 1px solid #2a2e55;
    background: #0f1220;
    color: #fff;
    margin-top: 0.3rem;
}

.login-box button {
    margin-top: 1.5rem;
    padding: 0.7rem;
    border: none;
    border-radius: 8px;
    background: #6c63ff;
    color: #fff;
    font-weight: bold;
    cursor: pointer;
}

.login-box .hint {
    font-size: 0.85rem;
    color: #8f90b3;
}

.error {
    color: #ff6b6b;
}

footer {
    text-align: center;
    padding: 1.5rem;
    color: #6d6e8a;
    font-size: 0.85rem;
}