*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    background: #000000;
    color: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.main-container {
    width: 100%;
    max-width: 240px;
    position: relative;
    transition: height 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.form-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transform: scale(0.98);
    transition: opacity 0.4s ease, transform 0.4s ease;
    pointer-events: none;
}

.form-wrapper.active {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

h1 {
    font-size: 1rem;
    font-weight: 400;
    text-align: center;
    margin: 0 0 0.5rem 0;
    color: #c4c4c4;
}

.input-group {
    position: relative;
    margin-bottom: 0.5rem;
}

.input-group input {
    width: 100%;
    padding: 0.5rem 0.2rem;
    font-size: 0.7rem;
    color: #ffffff;
    background-color: transparent;
    border: none;
    border-bottom: 1px solid #444;
    outline: none;
    border-radius: 0;
    transition: border-color 0.2s ease;
}

.input-group input:focus {
    border-bottom-color: #c4c4c4;
}

input::placeholder {
    color: #999;
    opacity: 0.6;
}

.input-group input:-webkit-autofill,
.input-group input:-webkit-autofill:hover, 
.input-group input:-webkit-autofill:focus, 
.input-group input:-webkit-autofill:active  {
    -webkit-box-shadow: 0 0 0 30px #000000 inset !important;
    -webkit-text-fill-color: #c4c4c4 !important;
}

.submit-btn {
    width: 100%;
    background-color: #000000;
    color: #c4c4c4;
    border: none;
    padding: 0.5rem;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: 0;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-top: 0.5rem;
}

.submit-btn:hover {
    background-color: #141414;
    color: #c4c4c4;
}

.page-footer {
    position: absolute;
    bottom: 2rem;
    text-align: center;
}

.page-footer a {
    color: #888;
    text-decoration: none;
    font-size: 0.75rem;
    transition: color 0.2s ease;
}

.page-footer a:hover {
    color: #fff;
}

.message {
    text-align: center;
    margin-bottom: 1.2rem;
    font-size: 0.8rem;
}

.message.error {
    color: #ff5252;
}

.message.success {
    color: #00c853;
}