:root {
    --by-ink: #142b32;
    --by-muted: #627b7c;
    --by-teal: #166b6b;
    --by-teal-dark: #105a5b;
    --by-border: #dfe9e5;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }

body.by-login-page {
    margin: 0;
    color: var(--by-ink);
    background: #f5f8f5;
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

.by-login-layout {
    min-height: 100vh;
    min-height: 100dvh;
    display: grid;
    place-items: center;
    padding: 48px 20px;
    background:
        radial-gradient(circle at 12% 14%, rgba(217, 238, 229, .85), transparent 34%),
        radial-gradient(circle at 90% 84%, rgba(222, 239, 232, .72), transparent 32%),
        #f7f8f6;
}

.by-login-content { width: min(100%, 440px); }

.by-login-brand {
    display: flex;
    width: max-content;
    align-items: center;
    gap: 12px;
    margin: 0 auto 30px;
    color: var(--by-ink);
    font-size: 29px;
    font-weight: 400;
    letter-spacing: -.065em;
    line-height: 1;
    text-decoration: none;
}

.by-login-brand:hover { color: var(--by-teal); }
.by-login-brand strong { font-weight: 800; }

.by-brand-mark {
    display: grid;
    grid-template-columns: repeat(2, 10px);
    grid-template-rows: repeat(2, 10px);
    gap: 4px;
    transform: rotate(-12deg);
}

.by-brand-mark span { background: var(--by-teal); border-radius: 3px; }
.by-brand-mark span:first-child { grid-row: span 2; }
.by-brand-mark span:last-child { background: #f7a972; }

.by-login-card {
    padding: 39px 40px 40px;
    border: 1px solid var(--by-border);
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 22px 60px rgba(20, 53, 53, .09), 0 2px 8px rgba(20, 53, 53, .025);
}

.by-login-card-top { margin-bottom: 32px; }

.by-login-kicker {
    display: block;
    margin-bottom: 12px;
    color: var(--by-teal);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .15em;
}

.by-login-card h1 {
    margin: 0 0 9px;
    font-size: 30px;
    font-weight: 750;
    letter-spacing: -.045em;
    line-height: 1.2;
}

.by-login-card-top p {
    margin: 0;
    color: var(--by-muted);
    font-size: 14px;
    line-height: 1.6;
}

.by-form-field { margin-bottom: 20px; }

.by-form-field label {
    display: block;
    margin-bottom: 9px;
    color: #315052;
    font-size: 13px;
    font-weight: 700;
}

.by-input-wrap { position: relative; }

.by-input-wrap .bi {
    position: absolute;
    top: 50%;
    left: 16px;
    z-index: 1;
    color: #78918d;
    font-size: 17px;
    line-height: 1;
    transform: translateY(-50%);
    pointer-events: none;
}

.by-input-wrap .form-control {
    width: 100%;
    height: 50px;
    padding: 12px 16px 12px 47px;
    border: 1px solid #d8e3df;
    border-radius: 9px;
    background: #fbfcfb;
    color: var(--by-ink);
    font-size: 15px;
    box-shadow: none;
}

.by-input-wrap .form-control::placeholder { color: #93a5a1; }

.by-input-wrap .form-control:focus {
    border-color: var(--by-teal);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(22, 107, 107, .1);
}

.by-login-submit {
    display: flex;
    width: 100%;
    min-height: 52px;
    align-items: center;
    justify-content: center;
    gap: 11px;
    margin-top: 28px;
    border: 0;
    border-radius: 9px;
    background: var(--by-teal);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: background .2s ease, transform .2s ease;
}

.by-login-submit:hover { background: var(--by-teal-dark); transform: translateY(-1px); }
.by-login-submit:active { transform: translateY(0); }

.by-login-submit:focus-visible,
.by-login-brand:focus-visible {
    outline: 3px solid #efaa77;
    outline-offset: 4px;
}

.by-login-footer {
    margin: 26px 0 0;
    color: #7f9692;
    font-size: 12px;
    text-align: center;
}

@media (max-width: 480px) {
    .by-login-layout { padding: 32px 16px; }
    .by-login-brand { margin-bottom: 24px; font-size: 27px; }
    .by-login-card { padding: 32px 25px; }
    .by-login-card h1 { font-size: 28px; }
}

@media (prefers-reduced-motion: reduce) {
    .by-login-submit { transition: none; }
}

.by-login-footer a { color: var(--by-teal); text-underline-offset: 3px; }