:root {
    --login-primary: #6d28d9;
    --login-primary-dark: #4c1d95;
    --login-accent: #8b5cf6;
    --login-surface: rgba(255, 255, 255, 0.96);
    --login-text: #1f2937;
    --login-muted: #6b7280;
    --login-border: #dbe2ea;
    --login-danger: #b91c1c;
    --login-focus: rgba(109, 40, 217, 0.24);
}

.login-page {
    min-height: 100vh;
    width: 100%;
    display: grid;
    place-items: center;
    padding: 2rem 1rem;
}

.login-shell {
    width: min(960px, 100%);
    display: grid;
    grid-template-columns: minmax(260px, 0.9fr) minmax(340px, 1.1fr);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 24px;
    box-shadow: 0 24px 70px rgba(8, 7, 22, 0.42);
    background: var(--login-surface);
}

.login-brand-panel {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 560px;
    padding: 3rem;
    color: #fff;
    background:
        radial-gradient(circle at 20% 20%, rgba(167, 139, 250, 0.65), transparent 32%),
        radial-gradient(circle at 85% 75%, rgba(59, 130, 246, 0.5), transparent 36%),
        linear-gradient(145deg, #111827, #312e81 55%, #581c87);
}

.login-brand-mark {
    width: 56px;
    height: 56px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    font-size: 1.45rem;
    font-weight: 800;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
}

.login-brand-copy h1 {
    margin: 0 0 0.75rem;
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.05;
    font-weight: 800;
    letter-spacing: -0.04em;
}

.login-brand-copy p {
    max-width: 32rem;
    margin: 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: 1rem;
    line-height: 1.65;
}

.login-brand-footer {
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.875rem;
}

.login-card {
    padding: 3rem;
    color: var(--login-text);
    background: var(--login-surface);
}

.login-heading {
    margin-bottom: 1.5rem;
}

.login-heading h2 {
    margin: 0 0 0.4rem;
    font-size: 1.8rem;
    font-weight: 750;
    letter-spacing: -0.025em;
}

.login-heading p {
    margin: 0;
    color: var(--login-muted);
}

.login-mode-switch {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.35rem;
    padding: 0.35rem;
    margin-bottom: 1.5rem;
    border-radius: 12px;
    background: #eef1f6;
}

.login-mode-button {
    min-height: 42px;
    border: 0;
    border-radius: 9px;
    color: var(--login-muted);
    background: transparent;
    font-weight: 650;
    transition: background 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.login-mode-button[aria-selected="true"] {
    color: var(--login-primary-dark);
    background: #fff;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.12);
}

.login-field {
    margin-bottom: 1rem;
}

.login-label {
    display: block;
    margin-bottom: 0.4rem;
    color: var(--login-text);
    font-size: 0.9rem;
    font-weight: 650;
}

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

.login-input {
    width: 100%;
    min-height: 48px;
    padding: 0.7rem 0.85rem;
    border: 1px solid var(--login-border);
    border-radius: 10px;
    color: var(--login-text);
    background: #fff;
    font-size: 1rem;
    outline: none;
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.login-input:focus {
    border-color: var(--login-primary);
    box-shadow: 0 0 0 4px var(--login-focus);
}

.login-input.has-toggle {
    padding-right: 4.5rem;
}

.password-toggle {
    position: absolute;
    top: 50%;
    right: 0.55rem;
    min-height: 34px;
    padding: 0 0.65rem;
    transform: translateY(-50%);
    border: 0;
    border-radius: 7px;
    color: var(--login-primary-dark);
    background: #f3f0ff;
    font-size: 0.8rem;
    font-weight: 700;
}

.login-validation,
.field-validation-error,
.validation-summary-errors {
    display: block;
    margin-top: 0.35rem;
    color: var(--login-danger);
    font-size: 0.82rem;
}

.validation-summary-errors ul {
    margin: 0 0 1rem;
    padding-left: 1.2rem;
}

.login-submit {
    width: 100%;
    min-height: 50px;
    margin-top: 0.5rem;
    border: 0;
    border-radius: 11px;
    color: #fff;
    background: linear-gradient(135deg, var(--login-primary), var(--login-primary-dark));
    font-size: 1rem;
    font-weight: 750;
    box-shadow: 0 10px 24px rgba(76, 29, 149, 0.24);
    transition: transform 150ms ease, box-shadow 150ms ease;
}

.login-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 28px rgba(76, 29, 149, 0.3);
}

.login-submit:focus-visible,
.login-mode-button:focus-visible,
.password-toggle:focus-visible {
    outline: 3px solid rgba(109, 40, 217, 0.35);
    outline-offset: 2px;
}

.login-error {
    margin-bottom: 1rem;
    padding: 0.8rem 0.9rem;
    border: 1px solid #fecaca;
    border-radius: 10px;
    color: #991b1b;
    background: #fef2f2;
    font-size: 0.9rem;
}

.login-help {
    margin-top: 1.25rem;
    color: var(--login-muted);
    text-align: center;
    font-size: 0.82rem;
}

@media (max-width: 760px) {
    .login-page {
        padding: 1rem;
    }

    .login-shell {
        grid-template-columns: 1fr;
        border-radius: 18px;
    }

    .login-brand-panel {
        min-height: auto;
        padding: 2rem;
        gap: 2rem;
    }

    .login-brand-copy h1 {
        font-size: 2.2rem;
    }

    .login-card {
        padding: 2rem;
    }
}

@media (max-width: 430px) {
    .login-page {
        padding: 0;
    }

    .login-shell {
        min-height: 100vh;
        border: 0;
        border-radius: 0;
    }

    .login-brand-panel,
    .login-card {
        padding: 1.5rem;
    }
}