:root {
    --login-bg1: #0f172a;
    --login-bg2: #0f766e;
    --login-card: #ffffff;
    --login-text: #0f172a;
    --login-muted: #64748b;
    --login-border: #dbe3ee;
    --login-focus: #38bdf8;
    --login-btn1: #0ea5e9;
    --login-btn2: #0369a1;
    --login-danger: #b91c1c;
}

@font-face {
    font-family: "Ubuntu";
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: local("Ubuntu"), local("Ubuntu Regular"), url("../webfonts/ubuntu/ubuntu-400-latin.woff2") format("woff2");
}

@font-face {
    font-family: "Ubuntu";
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: local("Ubuntu Medium"), local("Ubuntu"), url("../webfonts/ubuntu/ubuntu-500-latin.woff2") format("woff2");
}

@font-face {
    font-family: "Ubuntu";
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: local("Ubuntu Bold"), local("Ubuntu"), url("../webfonts/ubuntu/ubuntu-700-latin.woff2") format("woff2");
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body.login-page {
    margin: 0;
    font-family: 'Ubuntu', 'Segoe UI', Tahoma, sans-serif;
    color: var(--login-text);
    background:
        radial-gradient(1100px 520px at 15% -10%, rgba(14, 165, 233, .22), transparent 60%),
        radial-gradient(900px 460px at 90% 110%, rgba(20, 184, 166, .20), transparent 60%),
        linear-gradient(145deg, var(--login-bg1), #111827 48%, var(--login-bg2));
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-shell {
    width: min(430px, 96vw);
    background: rgba(255, 255, 255, .96);
    border: 1px solid rgba(255, 255, 255, .6);
    border-radius: 18px;
    box-shadow: 0 26px 54px rgba(2, 8, 23, .38), 0 8px 20px rgba(2, 8, 23, .22);
    overflow: hidden;
}

.login-head {
    padding: 26px 30px 18px;
    background: linear-gradient(180deg, #f8fafc, #f0f9ff);
    border-bottom: 1px solid #e2e8f0;
}

.login-title {
    margin: 0;
    font-size: 2rem;
    line-height: 1.1;
    font-weight: 700;
    letter-spacing: .01em;
}

.login-sub {
    margin: 7px 0 0;
    color: var(--login-muted);
    font-size: .97rem;
}

body.login-page form {
    padding: 22px 30px 30px;
}

.form-group {
    margin-bottom: 14px;
}

body.login-page label {
    display: block;
    margin: 0 0 6px;
    font-size: .86rem;
    font-weight: 700;
    color: #334155;
    letter-spacing: .01em;
}

body.login-page input {
    width: 100%;
    height: 46px;
    border-radius: 12px;
    border: 1px solid var(--login-border);
    padding: 0 14px;
    font-size: 1rem;
    outline: none;
    background: #fff;
    box-shadow: 0 6px 14px rgba(15, 23, 42, .06);
    transition: border-color .16s ease, box-shadow .16s ease, transform .16s ease;
}

body.login-page input:focus {
    border-color: var(--login-focus);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, .20), 0 10px 18px rgba(14, 165, 233, .15);
    transform: translateY(-1px);
}

.err {
    margin: 0 0 14px;
    background: #fee2e2;
    border: 1px solid #fecaca;
    color: var(--login-danger);
    border-radius: 10px;
    padding: 10px 12px;
    font-size: .9rem;
    font-weight: 600;
}

.btn-login {
    width: 100%;
    height: 48px;
    border: 0;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--login-btn1), var(--login-btn2));
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 12px 24px rgba(14, 165, 233, .28);
    transition: transform .16s ease, filter .16s ease, box-shadow .18s ease;
}

@media (hover: hover) and (pointer: fine) {
    .btn-login:hover {
        transform: translateY(-1px);
        filter: brightness(1.03);
        box-shadow: 0 14px 26px rgba(14, 165, 233, .34);
    }
}

.btn-login:active {
    transform: translateY(0);
    filter: brightness(.97);
}

.login-foot {
    margin-top: 10px;
    text-align: center;
    color: #94a3b8;
    font-size: .79rem;
}