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

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: linear-gradient(160deg, #0a0e1a 0%, #131b2e 40%, #1a1030 70%, #0d1117 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    color: #e0e0e0;
}

.login-card {
    background: rgba(18, 22, 34, 0.85);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    padding: 48px 40px 40px;
    border-radius: 16px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.4), 0 1px 3px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.06);
}

.login-card h1 {
    color: #c4d8f0;
    margin: 0 0 4px;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.subtitle {
    color: #5a6a7e;
    font-size: 0.9rem;
    margin: 0 0 32px;
    font-weight: 400;
}

.form-group {
    text-align: left;
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: #7a8a9e;
    font-size: 0.85rem;
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    box-sizing: border-box;
    font-size: 1rem;
    font-family: inherit;
    color: #e8ecf0;
    background: rgba(0,0,0,0.25);
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.form-group input:focus {
    border-color: #4a7eb8;
    box-shadow: 0 0 0 3px rgba(74, 126, 184, 0.15);
}

.form-group input::placeholder {
    color: #3a4a5e;
}

button {
    width: 100%;
    padding: 13px;
    background: linear-gradient(135deg, #3a6b96 0%, #4a82b4 100%);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
    margin-top: 4px;
}

button:hover {
    opacity: 0.92;
}

button:active {
    transform: scale(0.99);
}

.error-message {
    background: rgba(192, 57, 43, 0.12);
    color: #e74c3c;
    padding: 10px 14px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.85rem;
    border: 1px solid rgba(231, 76, 60, 0.2);
}

.security-note {
    font-size: 0.75rem;
    color: #3a4a5e;
    margin-top: 24px;
}

.go-home-link {
    display: inline-block;
    padding: 12px 32px;
    background: linear-gradient(135deg, #3a6b96 0%, #4a82b4 100%);
    color: #fff;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-family: inherit;
    font-size: 0.95rem;
    margin-top: 16px;
}