@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

:root {
    --primary-base: 187;
    --primary-saturation: 50%;
    --primary-0: #fff;
    --primary-50: hsl(var(--primary-base), var(--primary-saturation), 95%);
    --primary-100: hsl(var(--primary-base), var(--primary-saturation), 90%);
    --primary-200: hsl(var(--primary-base), var(--primary-saturation), 80%);
    --primary-300: hsl(var(--primary-base), var(--primary-saturation), 70%);
    --primary-500: hsl(var(--primary-base), var(--primary-saturation), 50%);
    --primary-600: hsl(var(--primary-base), var(--primary-saturation), 40%);
    --primary-700: hsl(var(--primary-base), var(--primary-saturation), 30%);
    --primary-800: hsl(var(--primary-base), var(--primary-saturation), 20%);
}

*, *::before, *::after { box-sizing: border-box; }
html { font-size: 62.5%; }
body {
    margin: 0;
    min-height: 100dvh;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "Poppins", "Segoe UI", system-ui, sans-serif;
    font-size: 1.6rem;
    color: #444;
    background-image:
        radial-gradient(var(--primary-500) 1.7px, transparent 1.7px),
        radial-gradient(var(--primary-500) 1.7px, var(--primary-100) 1.7px);
    background-size: 68px 68px;
    background-position: 0 0, 34px 34px;
}

.login-form {
    width: 100%;
    max-width: 600px;
    padding: 4rem 4.8rem 5rem;
    display: flex;
    flex-direction: column;
    border: 1px solid #d4d7da;
    border-radius: 10px;
    background: var(--primary-0);
    box-shadow: 0 2px 20px rgba(0, 0, 0, .1);
}

.logo { align-self: center; width: 260px; height: 96px; }
.logo img { width: 100%; height: 100%; object-fit: contain; }
.brand-logo { display:flex; align-items:center; justify-content:center; gap:.18em; color:var(--primary-700); font-size:3.2rem; font-weight:300; letter-spacing:.03em; }
.brand-logo strong { font-weight:800; }
.product-name { margin-top: -.8rem; text-align: center; color: var(--primary-700); font-size: 2rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.product-description { margin: .4rem 0 3rem; text-align: center; color: #6b7280; font-size: 1.3rem; }
.fields { margin-bottom: 2.2rem; }
.fields label { display: block; margin-bottom: .8rem; font-weight: 500; }
.fields input {
    width: 100%;
    padding: 1.2rem .9rem;
    border: 1px solid var(--primary-200);
    border-radius: 4px;
    outline: none;
    color: inherit;
    font: 500 1.5rem "Poppins", sans-serif;
    transition: border-color .2s, box-shadow .2s;
}
.fields:focus-within { color: var(--primary-700); }
.fields input:focus { border-color: var(--primary-700); box-shadow: 0 0 1rem var(--primary-300); }
.remember { display: flex; align-items: center; gap: .8rem; margin: -1rem 0 2rem; color: #5f6670; font-size: 1.35rem; cursor: pointer; }
.remember input { width: 1.6rem; height: 1.6rem; accent-color: var(--primary-600); }
button {
    min-height: 48px;
    padding: 1.2rem .8rem;
    border: 0;
    border-radius: 5px;
    color: #fff;
    background: var(--primary-600);
    font: 700 1.6rem "Poppins", sans-serif;
    cursor: pointer;
    transition: background .2s, opacity .2s;
}
button:hover { background: var(--primary-700); }
button:disabled { cursor: wait; opacity: .85; }
.spinner { display: none; width: 22px; height: 22px; margin: auto; border: 3px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: rotate .7s linear infinite; }
button.loading span:first-child { display: none; }
button.loading .spinner { display: block; }
.error { margin-bottom: 2rem; padding: 1.4rem 1.6rem; border-radius: 8px; color: #a94442; background: #f2dede; font-size: 1.4rem; }
@keyframes rotate { to { transform: rotate(360deg); } }
@media (max-width: 600px) { html { font-size: 55%; } .login-form { padding: 3rem 2.6rem 4rem; } .logo { width: 190px; height: 95px; } }