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

body {
    background: #f5f5f5;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0,0,0,.08);
    width: 100%;
    max-width: 380px;
    padding: 40px 36px;
}

.sidebar-logo{
    margin-bottom: 10px;
}

.subtitle {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 32px;
    text-align: center;
}

.field { margin-bottom: 16px; }

label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .04em;
    margin-bottom: 5px;
}

input {
    width: 100%;
    padding: 10px 13px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text);
    outline: none;
    transition: border-color .15s;
    font-family: inherit;
}

input:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(34, 253, 38, 0.12);
}

.feedback {
    display: none;
    padding: 10px 13px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 16px;
}

.feedback.error {
    display: block;
    background: #fef2f2;
    color: var(--danger);
    border: 1px solid #fecaca;
}

button {
    width: 100%;
    padding: 12px;
    background: var(--brand);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    margin-top: 8px;
    transition: background .15s, opacity .15s;
    font-family: inherit;
}

button:hover:not(:disabled) { background: var(--brand-dk); }
button:disabled { opacity: .6; cursor: not-allowed; }