/* AB Auth — compact, modern, viewport-fit layout */
:root {
    --ab-bg: #e8edf5;
    --ab-bg-accent: #dce4f2;
    --ab-card: #ffffff;
    --ab-text: #0f172a;
    --ab-muted: #64748b;
    --ab-border: #e2e8f0;
    --ab-border-focus: color-mix(in srgb, var(--ab-primary) 35%, var(--ab-border));
    --ab-error: #dc2626;
    --ab-success: #16a34a;
    --ab-info: #0369a1;
    --ab-radius: 16px;
    --ab-radius-sm: 10px;
    --ab-shadow: 0 4px 24px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
    --ab-input-h: 40px;
    --ab-gap: 10px;
    --ab-font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}

html.ab-auth-html {
    height: 100%;
    overflow: hidden;
}

body.ab-auth {
    background:
        radial-gradient(ellipse 80% 60% at 10% 0%, color-mix(in srgb, var(--ab-primary) 12%, transparent), transparent 55%),
        radial-gradient(ellipse 70% 50% at 100% 100%, color-mix(in srgb, var(--ab-accent) 18%, transparent), transparent 50%),
        linear-gradient(160deg, var(--ab-bg) 0%, var(--ab-bg-accent) 100%);
    color: var(--ab-text);
    font-family: var(--ab-font);
    font-size: 14px;
    line-height: 1.4;
    min-height: 100dvh;
    min-height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

body.ab-auth .ab-auth__shell {
    align-items: center;
    display: flex;
    justify-content: center;
    min-height: 100dvh;
    min-height: 100vh;
    padding:
        max(10px, env(safe-area-inset-top, 0px))
        max(12px, env(safe-area-inset-right, 0px))
        max(10px, env(safe-area-inset-bottom, 0px))
        max(12px, env(safe-area-inset-left, 0px));
}

body.ab-auth .ab-auth__card {
    background: var(--ab-card);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: var(--ab-radius);
    box-shadow: var(--ab-shadow);
    display: flex;
    flex-direction: column;
    gap: var(--ab-gap);
    max-height: calc(100dvh - 20px);
    max-height: calc(100vh - 20px);
    max-width: 400px;
    overflow: hidden;
    padding: 20px 22px 14px;
    width: 100%;
}

body.ab-auth.ab-auth--signup .ab-auth__card,
body.ab-auth.ab-auth--reset .ab-auth__card {
    max-width: 440px;
}

body.ab-auth .ab-auth__header {
    align-items: center;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    gap: 12px;
}

body.ab-auth .ab-auth__logo-link {
    display: block;
    line-height: 0;
}

body.ab-auth .ab-auth__logo {
    height: auto;
    margin: 0 auto;
    max-height: 44px;
    max-width: min(200px, 70vw);
    object-fit: contain;
    width: auto;
}

body.ab-auth .ab-auth__body {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    gap: var(--ab-gap);
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
}

body.ab-auth .ab-auth__body::-webkit-scrollbar {
    width: 4px;
}

body.ab-auth .ab-auth__body::-webkit-scrollbar-thumb {
    background: var(--ab-border);
    border-radius: 4px;
}

body.ab-auth .ab-auth__subtitle {
    color: var(--ab-muted);
    font-size: 13px;
    line-height: 1.35;
    margin: 0;
}

body.ab-auth form.ab-auth__form {
    display: flex;
    flex-direction: column;
    gap: var(--ab-gap);
}

body.ab-auth .ab-auth__grid {
    display: grid;
    gap: var(--ab-gap);
    grid-template-columns: 1fr;
}

@media (min-width: 420px) {
    body.ab-auth.ab-auth--signup .ab-auth__grid {
        grid-template-columns: 1fr 1fr;
    }

    body.ab-auth.ab-auth--signup .ab-auth__field--full {
        grid-column: 1 / -1;
    }
}

body.ab-auth .ab-auth__field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

body.ab-auth .ab-auth__field label {
    color: var(--ab-muted);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.01em;
}

body.ab-auth .ab-auth__input {
    appearance: none;
    background: #f8fafc;
    border: 1px solid var(--ab-border);
    border-radius: var(--ab-radius-sm);
    color: var(--ab-text);
    font-size: 14px;
    height: var(--ab-input-h);
    line-height: 1.2;
    padding: 0 12px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
    width: 100%;
}

body.ab-auth .ab-auth__input:hover {
    border-color: color-mix(in srgb, var(--ab-muted) 40%, var(--ab-border));
}

body.ab-auth .ab-auth__input:focus {
    background: #fff;
    border-color: var(--ab-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--ab-primary) 14%, transparent);
    outline: none;
}

body.ab-auth .ab-auth__input--invalid {
    border-color: var(--ab-error);
}

body.ab-auth .ab-auth__honeypot {
    height: 1px;
    left: -9999px !important;
    opacity: 0;
    pointer-events: none;
    position: absolute !important;
    top: -9999px !important;
    width: 1px;
}

body.ab-auth .ab-auth__row {
    align-items: center;
    color: var(--ab-muted);
    display: flex;
    font-size: 12px;
    gap: 8px;
    justify-content: space-between;
    margin: -2px 0 0;
}

body.ab-auth .ab-auth__row label {
    align-items: center;
    cursor: pointer;
    display: flex;
    gap: 6px;
}

body.ab-auth .ab-auth__row input[type="checkbox"] {
    accent-color: var(--ab-primary);
    height: 14px;
    width: 14px;
}

body.ab-auth .ab-auth__row a {
    color: var(--ab-primary);
    font-weight: 500;
    white-space: nowrap;
}

body.ab-auth .ab-auth__row a:hover {
    text-decoration: underline;
}

body.ab-auth .ab-auth__submit {
    background: var(--ab-primary);
    border-radius: var(--ab-radius-sm);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    height: 42px;
    letter-spacing: 0.01em;
    margin-top: 2px;
    transition: filter 0.15s ease, transform 0.05s ease;
    width: 100%;
}

body.ab-auth .ab-auth__submit:hover {
    filter: brightness(1.06);
}

body.ab-auth .ab-auth__submit:active {
    transform: translateY(1px);
}

body.ab-auth .ab-auth__submit:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

a.ab-auth__submit {
    align-items: center;
    display: inline-flex;
    justify-content: center;
    text-decoration: none;
}

body.ab-auth .ab-auth__link-back {
    color: var(--ab-muted);
    display: inline-flex;
    font-size: 12px;
    font-weight: 500;
    gap: 4px;
    margin-top: 2px;
}

body.ab-auth .ab-auth__link-back:hover {
    color: var(--ab-primary);
}

body.ab-auth .ab-auth__notice {
    border-radius: var(--ab-radius-sm);
    flex-shrink: 0;
    font-size: 13px;
    line-height: 1.4;
    padding: 8px 10px;
}

body.ab-auth .ab-auth__notice--error {
    background: rgba(220, 38, 38, 0.07);
    border: 1px solid rgba(220, 38, 38, 0.18);
    color: var(--ab-error);
}

body.ab-auth .ab-auth__notice--success {
    background: rgba(22, 163, 74, 0.07);
    border: 1px solid rgba(22, 163, 74, 0.18);
    color: var(--ab-success);
}

body.ab-auth .ab-auth__notice--info {
    background: rgba(3, 105, 161, 0.07);
    border: 1px solid rgba(3, 105, 161, 0.18);
    color: var(--ab-info);
}

body.ab-auth .ab-auth__hint {
    color: var(--ab-muted);
    font-size: 11px;
    line-height: 1.3;
}

body.ab-auth .ab-auth__field--password:not(:focus-within) .ab-auth__hint {
    display: none;
}

body.ab-auth .ab-auth__match-hint:not(:empty) {
    color: var(--ab-error);
    display: block;
}

body.ab-auth .ab-auth__strength {
    background: var(--ab-border);
    border-radius: 2px;
    display: block;
    height: 3px;
    margin-top: 2px;
    overflow: hidden;
}

body.ab-auth .ab-auth__strength i {
    background: var(--ab-error);
    display: block;
    height: 100%;
    transition: width 0.2s ease, background-color 0.2s ease;
    width: 0%;
}

body.ab-auth .ab-auth__strength[data-score="2"] i {
    background: #d97706;
    width: 50%;
}

body.ab-auth .ab-auth__strength[data-score="3"] i {
    background: #0d9488;
    width: 75%;
}

body.ab-auth .ab-auth__strength[data-score="4"] i {
    background: var(--ab-success);
    width: 100%;
}

/* Segmented tabs */
body.ab-auth .ab-auth__tabs {
    background: #f1f5f9;
    border-radius: 999px;
    display: grid;
    flex-shrink: 0;
    gap: 3px;
    grid-template-columns: 1fr 1fr;
    padding: 3px;
    width: 100%;
}

body.ab-auth .ab-auth__tab {
    border-radius: 999px;
    color: var(--ab-muted);
    font-size: 13px;
    font-weight: 600;
    padding: 8px 10px;
    text-align: center;
    transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

body.ab-auth .ab-auth__tab:hover:not(.is-active) {
    color: var(--ab-text);
}

body.ab-auth .ab-auth__tab.is-active {
    background: #fff;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
    color: var(--ab-primary);
}

body.ab-auth .ab-auth__recaptcha {
    display: flex;
    justify-content: center;
    margin: 0;
    transform-origin: center top;
}

body.ab-auth .ab-auth__recaptcha .g-recaptcha {
    transform: scale(0.92);
    transform-origin: center top;
}

@media (max-width: 380px) {
    body.ab-auth .ab-auth__recaptcha .g-recaptcha {
        transform: scale(0.82);
    }
}

body.ab-auth .ab-auth__footer {
    border-top: 1px solid var(--ab-border);
    color: var(--ab-muted);
    flex-shrink: 0;
    font-size: 11px;
    margin-top: 2px;
    padding-top: 10px;
    text-align: center;
}

/* Login / lostpass: fit viewport without inner scroll on typical screens */
@media (min-height: 520px) {
    body.ab-auth.ab-auth--login .ab-auth__body,
    body.ab-auth.ab-auth--lostpass .ab-auth__body,
    body.ab-auth.ab-auth--verify .ab-auth__body {
        overflow-y: hidden;
    }
}

@media (max-width: 480px) {
    body.ab-auth .ab-auth__card {
        border-radius: 14px;
        max-height: calc(100dvh - 16px);
        max-height: calc(100vh - 16px);
        padding: 16px 16px 12px;
    }

    body.ab-auth .ab-auth__logo {
        max-height: 38px;
    }

    body.ab-auth .ab-auth__shell {
        padding:
            max(8px, env(safe-area-inset-top, 0px))
            max(10px, env(safe-area-inset-right, 0px))
            max(8px, env(safe-area-inset-bottom, 0px))
            max(10px, env(safe-area-inset-left, 0px));
    }
}

@media (prefers-reduced-motion: reduce) {
    body.ab-auth *,
    body.ab-auth *::before,
    body.ab-auth *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}