:root {
    --pm-bg: #f8f3ef;
    --pm-card: #ffffff;
    --pm-text: #302621;
    --pm-muted: #7d6d66;
    --pm-primary: #9b6a58;
    --pm-primary-dark: #745043;
    --pm-border: #eadfd8;
    --pm-danger: #b42318;
    --pm-success: #157347;
    --pm-shadow: 0 24px 70px rgba(74, 51, 42, .14);
    --pm-radius: 26px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--pm-text);
    background:
        radial-gradient(circle at top left, rgba(155, 106, 88, .22), transparent 34%),
        radial-gradient(circle at bottom right, rgba(234, 208, 190, .65), transparent 32%),
        var(--pm-bg);
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-shell {
    width: min(100%, 980px);
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    background: rgba(255, 255, 255, .72);
    border: 1px solid rgba(255, 255, 255, .78);
    border-radius: 34px;
    overflow: hidden;
    box-shadow: var(--pm-shadow);
    backdrop-filter: blur(14px);
}

.login-brand {
    padding: 54px;
    background:
        linear-gradient(135deg, rgba(155, 106, 88, .92), rgba(80, 55, 47, .94)),
        radial-gradient(circle at top right, rgba(255,255,255,.26), transparent 38%);
    color: #fff;
    min-height: 560px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.brand-kicker {
    display: inline-flex;
    width: fit-content;
    padding: 8px 14px;
    border: 1px solid rgba(255,255,255,.35);
    border-radius: 999px;
    font-size: 13px;
    letter-spacing: .08em;
    text-transform: uppercase;
    opacity: .92;
}

.login-brand h1 {
    margin: 28px 0 16px;
    font-size: clamp(38px, 5vw, 60px);
    line-height: .96;
    letter-spacing: -0.06em;
}

.login-brand p {
    max-width: 390px;
    margin: 0;
    color: rgba(255,255,255,.82);
    font-size: 17px;
    line-height: 1.65;
}

.brand-footer {
    font-size: 14px;
    color: rgba(255,255,255,.72);
}

.login-panel {
    padding: 54px;
    background: rgba(255,255,255,.84);
    display: flex;
    align-items: center;
}

.login-card {
    width: 100%;
}

.login-card h2 {
    margin: 0 0 8px;
    font-size: 30px;
    letter-spacing: -0.03em;
}

.login-card .subtitle {
    margin: 0 0 28px;
    color: var(--pm-muted);
    line-height: 1.5;
}

.alert {
    padding: 13px 15px;
    border-radius: 16px;
    margin-bottom: 18px;
    font-size: 14px;
    line-height: 1.4;
}

.alert-danger {
    color: var(--pm-danger);
    background: rgba(180, 35, 24, .08);
    border: 1px solid rgba(180, 35, 24, .16);
}

.alert-success {
    color: var(--pm-success);
    background: rgba(21, 115, 71, .08);
    border: 1px solid rgba(21, 115, 71, .16);
}

.form-group {
    margin-bottom: 18px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 700;
    color: #4c3d37;
}

input {
    width: 100%;
    height: 52px;
    border: 1px solid var(--pm-border);
    border-radius: 16px;
    padding: 0 16px;
    font-size: 15px;
    outline: none;
    background: #fff;
    color: var(--pm-text);
    transition: border-color .18s ease, box-shadow .18s ease;
}

input:focus {
    border-color: rgba(155, 106, 88, .72);
    box-shadow: 0 0 0 4px rgba(155, 106, 88, .12);
}

.btn {
    width: 100%;
    height: 54px;
    border: none;
    border-radius: 18px;
    background: var(--pm-primary);
    color: #fff;
    font-weight: 800;
    font-size: 15px;
    cursor: pointer;
    transition: transform .16s ease, background .16s ease, box-shadow .16s ease;
    box-shadow: 0 14px 34px rgba(155, 106, 88, .24);
}

.btn:hover {
    background: var(--pm-primary-dark);
    transform: translateY(-1px);
}

.hint {
    margin-top: 22px;
    color: var(--pm-muted);
    font-size: 13px;
    line-height: 1.5;
    text-align: center;
}

@media (max-width: 820px) {
    body {
        padding: 14px;
    }

    .login-shell {
        grid-template-columns: 1fr;
        border-radius: 26px;
    }

    .login-brand {
        min-height: auto;
        padding: 34px;
        gap: 34px;
    }

    .login-panel {
        padding: 34px;
    }

    .login-brand h1 {
        font-size: 42px;
    }
}