/**
 * Account UI Styles
 * Login, signup, lock screen, and data migration overlay styles.
 * Uses existing design system variables and BEM naming.
 */

/* ── Account Screen Overlay ──────────────────────────── */

.account-screen {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary, #f5f5f3);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.account-screen--visible {
    opacity: 1;
}

.account-screen--hidden {
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
}

/* ── Account Card ────────────────────────────────────── */

.account-card {
    width: 100%;
    max-width: 400px;
    margin: 0 var(--spacing-md, 1rem);
    background: var(--card-bg, #fff);
    border-radius: var(--border-radius-lg, 12px);
    box-shadow: 0 8px 32px rgb(0 0 0 / 12%);
    overflow: hidden;
}

.account-card__header {
    padding: var(--spacing-xl, 2rem) var(--spacing-xl, 2rem) var(--spacing-md, 1rem);
    text-align: center;
}

.account-card__icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm, 0.5rem);
    line-height: 1;
}

.account-card__title {
    font-size: var(--font-size-xl, 1.5rem);
    font-weight: 700;
    color: var(--text-primary, #333);
    margin: 0 0 var(--spacing-xs, 0.25rem);
}

.account-card__subtitle {
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--text-secondary, #4d4d4d);
    margin: 0;
}

/* ── Account Form ────────────────────────────────────── */

.account-card__body {
    padding: var(--spacing-md, 1rem) var(--spacing-xl, 2rem) var(--spacing-xl, 2rem);
}

.account-form__group {
    margin-bottom: var(--spacing-md, 1rem);
}

.account-form__label {
    display: block;
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 500;
    color: var(--text-primary, #333);
    margin-bottom: var(--spacing-xs, 0.25rem);
}

.account-form__input {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--font-size-md, 1rem);
    font-family: var(--font-primary, -apple-system, blinkmacsystemfont, sans-serif);
    color: var(--text-primary, #333);
    background: var(--bg-secondary, #fff);
    border: 1px solid var(--card-border, rgb(0 0 0 / 12%));
    border-radius: var(--border-radius-md, 8px);
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}

.account-form__input:focus {
    outline: none;
    border-color: var(--accent-color, #06c);
    box-shadow: 0 0 0 3px rgb(6 106 201 / 10%);
}

.account-form__input--error {
    border-color: var(--color-error, #ef4444);
}

.account-form__input--error:focus {
    box-shadow: 0 0 0 3px rgb(239 68 68 / 10%);
}

.account-form__error {
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--color-error, #ef4444);
    margin-top: var(--spacing-xs, 0.25rem);
    min-height: 1.2em;
}

.account-form__hint {
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--text-muted, #767676);
    margin-top: var(--spacing-xs, 0.25rem);
}

/* ── Buttons ─────────────────────────────────────────── */

.account-form__submit {
    width: 100%;
    padding: 14px 24px;
    font-size: var(--font-size-md, 1rem);
    font-weight: 600;
    font-family: var(--font-primary, -apple-system, blinkmacsystemfont, sans-serif);
    color: var(--btn-primary-text, #fff);
    background: var(--btn-primary-bg, #333);
    border: none;
    border-radius: var(--border-radius-md, 8px);
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s, box-shadow 0.2s;
    min-height: 48px;
    margin-top: var(--spacing-sm, 0.5rem);
}

.account-form__submit:hover:not(:disabled) {
    background: var(--btn-primary-hover, #222);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgb(0 0 0 / 15%);
}

.account-form__submit:active:not(:disabled) {
    transform: translateY(0);
}

.account-form__submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.account-form__submit--loading {
    position: relative;
    color: transparent;
}

.account-form__submit--loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid rgb(255 255 255 / 30%);
    border-top-color: #fff;
    border-radius: 50%;
    animation: account-spin 0.6s linear infinite;
}

@keyframes account-spin {
    to { transform: rotate(360deg); }
}

/* ── Footer Links ────────────────────────────────────── */

.account-card__footer {
    padding: 0 var(--spacing-xl, 2rem) var(--spacing-xl, 2rem);
    text-align: center;
}

.account-card__link {
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--accent-color, #06c);
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-primary, -apple-system, blinkmacsystemfont, sans-serif);
    text-decoration: none;
    padding: 0;
}

.account-card__link:hover {
    text-decoration: underline;
}

.account-card__link:focus-visible {
    outline: 2px solid var(--accent-color, #06c);
    outline-offset: 2px;
    border-radius: 2px;
}

/* ── Avatar Picker ───────────────────────────────────── */

.account-form__avatars {
    display: flex;
    gap: var(--spacing-sm, 0.5rem);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xs, 0.25rem);
}

.account-form__avatar {
    width: 44px;
    height: 44px;
    font-size: 1.5rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--card-border, rgb(0 0 0 / 12%));
    border-radius: var(--border-radius-full, 9999px);
    background: var(--bg-tertiary, #fafafa);
    cursor: pointer;
    transition: border-color 0.2s, transform 0.15s, box-shadow 0.2s;
    padding: 0;
}

.account-form__avatar:hover {
    border-color: var(--text-secondary, #4d4d4d);
    transform: scale(1.1);
}

.account-form__avatar--selected {
    border-color: var(--accent-color, #06c);
    box-shadow: 0 0 0 2px rgb(6 106 201 / 20%);
    background: rgb(6 106 201 / 5%);
}

.account-form__avatar:focus-visible {
    outline: 2px solid var(--accent-color, #06c);
    outline-offset: 2px;
}

/* ── Lock Screen ─────────────────────────────────────── */

.account-card--lock .account-card__header {
    padding-bottom: var(--spacing-sm, 0.5rem);
}

.account-card__avatar-large {
    width: 72px;
    height: 72px;
    font-size: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm, 0.5rem);
    background: var(--bg-tertiary, #fafafa);
    border: 2px solid var(--card-border, rgb(0 0 0 / 12%));
    border-radius: var(--border-radius-full, 9999px);
}

.account-card__username {
    font-size: var(--font-size-lg, 1.25rem);
    font-weight: 600;
    color: var(--text-primary, #333);
    margin: 0;
}

/* ── User Picker (multiple users exist) ──────────────── */

.account-user-list {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-md, 1rem);
}

.account-user-list__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md, 1rem);
    padding: 12px 16px;
    border: 1px solid var(--card-border, rgb(0 0 0 / 12%));
    border-radius: var(--border-radius-md, 8px);
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s;
    background: var(--bg-secondary, #fff);
    margin-bottom: var(--spacing-sm, 0.5rem);
    width: 100%;
    text-align: left;
    font-family: var(--font-primary, -apple-system, blinkmacsystemfont, sans-serif);
}

.account-user-list__item:hover {
    background: var(--bg-tertiary, #fafafa);
    border-color: var(--text-muted, #767676);
}

.account-user-list__item:focus-visible {
    outline: 2px solid var(--accent-color, #06c);
    outline-offset: 2px;
}

.account-user-list__avatar {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary, #fafafa);
    border: 1px solid var(--card-border, rgb(0 0 0 / 12%));
    border-radius: var(--border-radius-full, 9999px);
    flex-shrink: 0;
}

.account-user-list__name {
    font-size: var(--font-size-md, 1rem);
    font-weight: 500;
    color: var(--text-primary, #333);
}

.account-user-list__arrow {
    margin-left: auto;
    color: var(--text-muted, #767676);
    font-size: var(--font-size-sm, 0.875rem);
}

/* ── Migration Overlay ───────────────────────────────── */

.account-migration {
    text-align: center;
}

.account-migration__progress {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary, #fafafa);
    border-radius: 4px;
    overflow: hidden;
    margin: var(--spacing-md, 1rem) 0;
}

.account-migration__bar {
    height: 100%;
    background: var(--accent-color, #06c);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.account-migration__status {
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--text-secondary, #4d4d4d);
    margin: var(--spacing-sm, 0.5rem) 0;
}

/* ── Skip / Guest Link ───────────────────────────────── */

.account-card__skip {
    display: block;
    margin-top: var(--spacing-md, 1rem);
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--text-muted, #767676);
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-primary, -apple-system, blinkmacsystemfont, sans-serif);
    padding: 0;
}

.account-card__skip:hover {
    color: var(--text-secondary, #4d4d4d);
    text-decoration: underline;
}

/* ── Password Toggle ─────────────────────────────────── */

.account-form__input-wrap {
    position: relative;
}

.account-form__input-wrap .account-form__input {
    padding-right: 48px;
}

.account-form__toggle-pw {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--text-muted, #767676);
    border-radius: var(--border-radius-sm, 4px);
}

.account-form__toggle-pw:hover {
    color: var(--text-secondary, #4d4d4d);
}

.account-form__toggle-pw:focus-visible {
    outline: 2px solid var(--accent-color, #06c);
    outline-offset: 2px;
}

/* ── Responsive ──────────────────────────────────────── */

@media (max-width: 480px) {
    .account-card {
        margin: 0 var(--spacing-sm, 0.5rem);
        border-radius: var(--border-radius-md, 8px);
    }

    .account-card__header {
        padding: var(--spacing-lg, 1.5rem) var(--spacing-lg, 1.5rem) var(--spacing-sm, 0.5rem);
    }

    .account-card__body {
        padding: var(--spacing-sm, 0.5rem) var(--spacing-lg, 1.5rem) var(--spacing-lg, 1.5rem);
    }

    .account-card__footer {
        padding: 0 var(--spacing-lg, 1.5rem) var(--spacing-lg, 1.5rem);
    }

    .account-card__icon {
        font-size: 2.5rem;
    }

    .account-card__title {
        font-size: var(--font-size-lg, 1.25rem);
    }
}