.doors-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--color-bg-primary);
}

.doors {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto 1fr;
    align-items: stretch;
    transition: grid-template-columns 420ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.doors[data-open="0"] { grid-template-columns: 2.4fr 0.8fr 0.8fr; }
.doors[data-open="1"] { grid-template-columns: 0.8fr 2.4fr 0.8fr; }
.doors[data-open="2"] { grid-template-columns: 0.8fr 0.8fr 2.4fr; }

.door {
    position: relative;
    grid-row: 1 / 3;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    overflow: hidden;
    border-right: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    transition: background 320ms ease, filter 320ms ease;
}

.door:last-of-type { border-right: 0; }
.door.is-open { grid-row: 1 / 2; }

.door.is-dim {
    background: var(--color-bg-tertiary);
    filter: saturate(0.4);
}

.door.is-dim:hover { filter: saturate(0.75); background: var(--color-bg-secondary); }

.door__tint {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--door-accent), transparent 62%);
    opacity: 0.16;
    transition: opacity 320ms ease;
    pointer-events: none;
}

.door.is-open .door__tint { opacity: 0.1; }
.door.is-dim .door__tint { opacity: 0.05; }

.door__choose {
    position: relative;

    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    width: 100%;
    padding: var(--space-6) var(--space-5);
    border: 0;
    background: transparent;
    color: inherit;
    text-align: center;
    font: inherit;
    cursor: pointer;
}

.door.is-open .door__choose { cursor: default; }

.door.is-dim {
    overflow: visible;

    justify-content: flex-start;
}

.door.is-dim .door__choose {
    position: sticky;
    top: 0;
    min-height: 100vh;
    max-height: 100vh;
}

.door__title {
    font-size: var(--font-size-xl);
    font-weight: 650;
    letter-spacing: -0.018em;
    line-height: 1.15;
    transition: font-size 380ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.door.is-open .door__title { font-size: var(--font-size-2xl); }

.door__promise {
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: var(--color-text-secondary);
    max-width: 34ch;
    margin-inline: auto;
}

.door.is-dim .door__promise { display: none; }

.door-form {
    grid-row: 2 / 3;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: 0 var(--space-5) var(--space-6);
    background: var(--color-bg-secondary);
    position: relative;
}

.door-form__inner {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    max-width: 460px;
    width: 100%;
    margin-inline: auto;
}

.door-form__inner fieldset.stack {
    border: 0;
    margin: 0;
    padding: 0;
    min-inline-size: 0;
}

.door-form__heading {
    text-align: center;
    padding-top: var(--space-5);
}

.door-form__heading .auth-logo {
    display: block;
}

.door-form__heading h1 {
    margin-bottom: var(--space-2);
    font-size: var(--font-size-xl);
}

.door-form__footer {
    margin-top: 14px;
}

.door-form__inner .form-group {
    margin-bottom: 0;
}

.door-form[data-col="0"] { grid-column: 1; }
.door-form[data-col="1"] { grid-column: 2; }
.door-form[data-col="2"] { grid-column: 3; }

.door-roles {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.door-role {
    border: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border-radius: 999px;
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.door-role:hover { border-color: var(--color-text-secondary); color: var(--color-text-primary); }

.door-role.is-active {
    background: var(--door-accent);
    border-color: var(--door-accent);
    color: #fff;
}

.door-form .btn-door {
    width: 100%;
    border: 0;
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    background: var(--door-accent);
    color: #fff;
    font-weight: 600;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: filter 150ms ease, transform 150ms ease;
}

.door-form .btn-door:hover { filter: brightness(1.08); transform: translateY(-1px); }
.door-form .btn-door:active { transform: none; }

.doors-backbar { display: none; }

.doors-back {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    border: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border-radius: 999px;
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
}

.doors-back:hover { background: var(--color-bg-tertiary); }

.doors-backbar__now {
    font-size: var(--font-size-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--door-accent, var(--color-accent-primary));
}

@media (max-width: 900px) {
    .doors,
    .doors[data-open="0"],
    .doors[data-open="1"],
    .doors[data-open="2"] {
        display: flex;
        flex-direction: column;
        gap: 0;
    }

    .door,
    .door.is-open {
        grid-row: auto;
        border-right: 0;
        border-bottom: 1px solid var(--color-border);
        min-height: 0;
    }

    .door__choose { padding: var(--space-5); gap: var(--space-2); }
    .door.is-open .door__title { font-size: var(--font-size-xl); }

    .door.is-dim .door__choose {
        position: static;
        min-height: 0;
        max-height: none;
    }

    .door-form {
        grid-column: auto;
        grid-row: auto;
        padding: var(--space-5);
        border-bottom: 1px solid var(--color-border);
    }

    .door-form__inner { max-width: none; }

    .doors-page[data-chosen="false"] .doors { flex: 1; }

    .doors-page[data-chosen="false"] .door {
        flex: 1;
        min-height: 132px;
    }

    .doors-page[data-chosen="false"] .door.is-dim {
        background: var(--color-bg-secondary);
        filter: none;
    }

    .doors-page[data-chosen="false"] .door.is-dim .door__promise { display: block; }
    .doors-page[data-chosen="false"] .door.is-dim .door__choose { min-height: 0; }
    .doors-page[data-chosen="false"] .door-form,
    .doors-page[data-chosen="false"] .doors-backbar { display: none; }

    .doors-page[data-chosen="true"] .door { display: none; }

    .doors-page[data-chosen="true"] .doors-backbar {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: var(--space-3);
        padding: var(--space-3) var(--space-5);
        border-bottom: 1px solid var(--color-border);
        background: var(--color-bg-secondary);
    }

    .doors-page[data-chosen="true"] .door-form {
        padding-top: var(--space-5);
    }
}

@media (prefers-reduced-motion: reduce) {
    .doors,
    .door,
    .door__tint,
    .door__title,
    .door-role,
    .door-form .btn-door {
        transition: none;
    }

    .door-form__inner > * { animation: none; }
}

/* Compatibility additions are scoped to the imported authentication pages. */
.phase2-auth .auth-card { padding: 19px 30px 9px; }
.phase2-auth .auth-logo, .doors-page .auth-logo { display: block; }
.phase2-auth .auth-footer, .doors-page .auth-footer { margin-top: 14px; padding-top: 12px; }
.phase2-auth .split { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.doors-page .stack { display: flex; flex-direction: column; gap: var(--space-3); }
.doors-page [x-cloak], .phase2-auth [x-cloak] { display: none !important; }
.doors-page .preview-select { position: relative; }
.doors-page .preview-select select { appearance: none; padding-right: 40px; }
.doors-page .preview-select > span { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); pointer-events: none; }
.door-form .btn-door:disabled { opacity: .5; cursor: not-allowed; filter: none; transform: none; }
.phase2-auth .custom-checkbox { position: relative; display: inline-flex; align-items: center; gap: var(--space-2); cursor: pointer; }
.phase2-auth .custom-checkbox input { position: absolute; left: 0; top: 50%; width: 20px; height: 20px; opacity: 0; transform: translateY(-50%); margin: 0; cursor: pointer; }
.phase2-auth .custom-checkbox-box { display: inline-flex; align-items: center; justify-content: center; width: 20px; height: 20px; flex-shrink: 0; border: 2px solid var(--color-border); border-radius: var(--radius-sm); color: transparent; }
.phase2-auth .custom-checkbox input:checked + .custom-checkbox-box { background: var(--color-accent-primary); border-color: var(--color-accent-primary); color: white; }
.phase2-auth .custom-checkbox input:focus-visible + .custom-checkbox-box { outline: 2px solid var(--color-accent-primary); outline-offset: 3px; }
@media (max-width: 640px) { .phase2-auth .auth-card { padding: 19px 20px 9px; } }

/* Phase 2 form sizing, without changing main's other forms. */
.doors-page, .phase2-auth {
    --color-accent-primary: #4F46E5;
    --color-accent-primary-hover: #4338CA;
    --color-text-tertiary: var(--color-text-secondary);
}
.doors-page .form-label, .phase2-auth .form-label { font-size: var(--font-size-xs); font-weight: 500; color: var(--color-text-secondary); margin-bottom: var(--space-1); }
.doors-page .form-input, .phase2-auth .form-input { min-height: 44px; padding: var(--space-2) var(--space-4); line-height: 1.4; }
.doors-page .input-with-icon .form-input, .phase2-auth .input-with-icon .form-input { padding-right: 48px; }

[data-theme="dark"] .doors-page, [data-theme="dark"] .phase2-auth { --color-accent-primary: #818CF8; --color-accent-primary-hover: #A5B4FC; }