/* Phase 12: Authentication — minimal tabbed login/register */

.shop-auth {
    min-height: 100vh;
    background-color: var(--color-bg);
    color: var(--color-text);
}

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

.shop-auth__main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-6) var(--space-4);
}

.shop-auth__brand {
    display: inline-flex;
    align-items: center;
    align-self: center;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
    color: var(--color-text);
    text-decoration: none;
}

.shop-auth__brand img {
    width: 3rem;
    height: auto;
}

.shop-auth__brand span {
    font-size: 1rem;
    font-weight: 700;
}

.shop-auth__card {
    width: 100%;
    max-width: 28rem;
    margin-inline: auto;
    padding: var(--space-5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background-color: var(--color-surface);
    box-shadow: var(--shadow-auth);
}

.shop-auth__tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-1);
    margin-bottom: var(--space-5);
    padding: var(--space-1);
    border-radius: var(--radius-md);
    background-color: var(--color-bg);
}

.shop-auth__tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--touch-target-min);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    transition:
        background-color var(--transition-fast),
        color var(--transition-fast);
}

.shop-auth__tab:hover,
.shop-auth__tab:focus {
    color: var(--color-text);
    text-decoration: none;
}

.shop-auth__tab.is-active {
    background-color: var(--color-surface);
    color: var(--color-text);
    box-shadow: var(--shadow-auth);
}

.shop-auth__guide {
    margin-bottom: var(--space-4);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    background-color: var(--color-bg);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    line-height: 1.6;
}

.shop-auth__title {
    margin: 0 0 var(--space-4);
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.4;
}

.shop-auth__intro {
    margin: 0 0 var(--space-4);
}

.shop-auth__back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.shop-auth__back-icon {
    font-size: 1.125rem;
    line-height: 1;
}

.shop-auth__form {
    margin-top: var(--space-2);
}

.shop-auth .sms-verification {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.shop-auth .sms-verification__block {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.shop-auth .sms-verification__label {
    display: block;
    margin: 0;
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 600;
}

.shop-auth .sms-verification__recipient {
    margin: 0;
    padding: var(--space-3);
    border-radius: var(--radius-md);
    background-color: var(--color-bg);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    line-height: 1.6;
}

.shop-auth .sms-verification__recipient strong {
    color: var(--color-text);
    font-weight: 700;
}

.shop-auth .sms-verification__input {
    width: 100%;
    min-height: var(--touch-target-min);
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
    color: var(--color-text);
    font-size: 0.9375rem;
}

.shop-auth .sms-verification__input:focus {
    outline: none;
    border-color: var(--color-auth);
    box-shadow: var(--shadow-focus-auth);
}

.shop-auth .sms-verification__input::placeholder {
    color: var(--color-text-muted);
}

.shop-auth .sms-verification__inline-row {
    display: flex;
    align-items: stretch;
    gap: var(--space-2);
}

.shop-auth .sms-verification__inline-row .sms-verification__input {
    flex: 1;
    min-width: 0;
}

.shop-auth .sms-verification__actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.shop-auth .sms-verification__send {
    flex-shrink: 0;
    align-self: stretch;
    width: auto;
    min-height: var(--touch-target-min);
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-surface) !important;
    border-color: var(--color-border) !important;
    color: var(--color-auth) !important;
    font-size: 0.8125rem;
    font-weight: 600;
    line-height: 1.2;
    box-shadow: none;
    white-space: nowrap;
    cursor: pointer;
    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast);
}

.shop-auth .sms-verification__send:hover,
.shop-auth .sms-verification__send:focus {
    background-color: var(--color-bg) !important;
    border-color: var(--color-auth) !important;
    color: var(--color-auth-hover) !important;
}

.shop-auth .sms-verification__send:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.shop-auth .sms-verification__timer {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    text-align: start;
}

.shop-auth .sms-verification__timer-value {
    display: inline-block;
    min-width: 2.5rem;
    margin-inline-start: var(--space-1);
    color: var(--color-text);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.shop-auth .sms-verification__errors:empty {
    display: none;
}

.shop-auth .sms-verification__error {
    margin: 0;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    background-color: rgba(189, 8, 28, 0.08);
    color: #bd081c;
    font-size: 0.875rem;
    line-height: 1.5;
}

.shop-auth__field {
    margin-bottom: var(--space-4);
}

.shop-auth__label {
    display: block;
    margin-bottom: var(--space-2);
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 600;
}

.shop-auth__input,
.shop-auth__select {
    width: 100%;
    min-height: var(--touch-target-min);
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
    color: var(--color-text);
    font-size: 0.9375rem;
}

.shop-auth__input:focus,
.shop-auth__select:focus {
    outline: none;
    border-color: var(--color-auth);
    box-shadow: var(--shadow-focus-auth);
}

.shop-auth__input::placeholder {
    color: var(--color-text-muted);
}

.shop-auth__link {
    display: inline-block;
    margin-bottom: var(--space-3);
    color: var(--color-auth);
    font-size: 0.875rem;
    text-decoration: none;
}

.shop-auth__link:hover,
.shop-auth__link:focus {
    color: var(--color-auth-hover);
    text-decoration: underline;
}

.shop-auth__link--secondary {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

.shop-auth__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: var(--touch-target-min);
    padding: var(--space-2) var(--space-4);
    border: 0;
    border-radius: var(--radius-md);
    background-color: var(--color-accent);
    color: var(--color-text);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-auth);
    transition: background-color var(--transition-fast);
}

.shop-auth__btn:hover,
.shop-auth__btn:focus {
    background-color: var(--color-accent-hover);
    color: var(--color-text);
}

.shop-auth .btn-primary.shop-auth__btn,
.shop-auth .shop-auth__btn.btn-primary {
    background-color: var(--color-accent) !important;
    border-color: var(--color-accent) !important;
    color: var(--color-text) !important;
}

.shop-auth .btn-primary.shop-auth__btn:hover,
.shop-auth .btn-primary.shop-auth__btn:focus,
.shop-auth .shop-auth__btn.btn-primary:hover,
.shop-auth .shop-auth__btn.btn-primary:focus {
    background-color: var(--color-accent-hover) !important;
    border-color: var(--color-accent-hover) !important;
    color: var(--color-text) !important;
}

.shop-auth__btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.shop-auth__btn--ghost {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    box-shadow: none;
}

.shop-auth__footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.shop-auth__hint {
    margin-top: var(--space-2);
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    line-height: 1.5;
}

.shop-auth__aside {
    display: none;
}

.shop-auth-products {
    width: 100%;
    max-width: 28rem;
}

.shop-auth-products__title {
    margin: 0 0 var(--space-4);
    font-size: 1.125rem;
    font-weight: 700;
}

.shop-auth-products__list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin: 0;
    padding: 0;
    list-style: none;
}

.shop-auth-products__item a {
    display: grid;
    grid-template-columns: 4.5rem minmax(0, 1fr);
    gap: var(--space-3);
    align-items: center;
    padding: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
    color: var(--color-text);
    text-decoration: none;
    box-shadow: var(--shadow-auth);
    transition: border-color var(--transition-fast);
}

.shop-auth-products__item a:hover,
.shop-auth-products__item a:focus {
    border-color: var(--color-auth);
    text-decoration: none;
}

.shop-auth-products__thumb {
    overflow: hidden;
    width: 4.5rem;
    height: 4.5rem;
    border-radius: var(--radius-sm);
    background-color: var(--color-bg);
}

.shop-auth-products__thumb img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.shop-auth-products__name {
    margin: 0 0 var(--space-1);
    overflow: hidden;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.4;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.shop-auth-products__price {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

.shop-auth-products__cta {
    display: inline-flex;
    margin-top: var(--space-4);
    color: var(--color-auth);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
}

.shop-auth-products__cta:hover,
.shop-auth-products__cta:focus {
    color: var(--color-auth-hover);
    text-decoration: underline;
}

@media (min-width: 992px) {
    .shop-auth__layout {
        grid-template-columns: minmax(0, 1fr) minmax(22rem, 28rem);
    }

    .shop-auth__main {
        padding: var(--space-8);
    }

    .shop-auth__aside {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: var(--space-8);
        border-inline-start: 1px solid var(--color-border);
        background-color: var(--color-surface);
    }
}