:root {
    --erp-ink: #0f172a;
    --erp-muted: #64748b;
    --erp-accent: #0d9488;
    --erp-accent-dark: #0f766e;
    --erp-surface: #f3f6fb;
    --erp-font: "Plus Jakarta Sans", "Segoe UI", system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
    min-height: 100vh;
    background: var(--erp-surface);
    color: var(--erp-ink);
    font-family: var(--erp-font);
}

.auth-split {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr;
}

.auth-hero {
    display: none;
    color: #ecfeff;
    background:
        radial-gradient(ellipse 80% 60% at 10% 0%, rgba(45, 212, 191, 0.28), transparent 55%),
        radial-gradient(ellipse 50% 40% at 100% 100%, rgba(15, 23, 42, 0.35), transparent 50%),
        linear-gradient(165deg, #0f766e 0%, #134e4a 42%, #0b1220 100%);
    padding: 3rem;
}

.auth-hero-inner {
    max-width: 28rem;
}

.auth-mark {
    width: 2.6rem;
    height: 2.6rem;
    border-radius: 0.85rem;
    display: grid;
    place-items: center;
    background: rgba(255, 255, 255, 0.14);
    font-weight: 700;
    letter-spacing: 0.02em;
    margin-bottom: 1.25rem;
}

.auth-hero h1 {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    margin-bottom: 0.75rem;
}

.auth-hero p {
    color: rgba(204, 251, 241, 0.86);
    margin-bottom: 1.75rem;
}

.auth-points {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.85rem;
}

.auth-points li {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    color: #ccfbf1;
    font-size: 0.95rem;
}

.auth-points i {
    margin-top: 0.15rem;
    color: #5eead4;
}

.auth-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background:
        radial-gradient(ellipse 70% 45% at 0% 0%, rgba(13, 148, 136, 0.12), transparent),
        radial-gradient(ellipse 50% 40% at 100% 100%, rgba(15, 23, 42, 0.05), transparent),
        var(--erp-surface);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 1.15rem;
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
    padding: 2rem;
}

.auth-brand {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.auth-brand span { color: var(--erp-accent); }

.form-control,
.form-select {
    border-radius: 0.7rem;
    border-color: #e2e8f0;
    padding: 0.62rem 0.85rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--erp-accent);
    box-shadow: 0 0 0 0.2rem rgba(13, 148, 136, 0.16);
}

.btn {
    border-radius: 0.7rem;
    font-weight: 600;
}

.btn-accent {
    background: var(--erp-accent);
    border-color: var(--erp-accent);
    color: #fff;
}

.btn-accent:hover,
.btn-accent:focus {
    background: var(--erp-accent-dark);
    border-color: var(--erp-accent-dark);
    color: #fff;
}

.auth-card a {
    color: var(--erp-accent);
}

.auth-card a:hover {
    color: var(--erp-accent-dark);
}

.input-group .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-color: #e2e8f0;
}

.alert {
    border: 0;
    border-radius: 0.85rem;
}

@media (min-width: 992px) {
    .auth-split {
        grid-template-columns: minmax(280px, 1.05fr) minmax(420px, 0.95fr);
    }

    .auth-hero {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }

    .auth-panel {
        padding: 2.5rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}