/* Engagement Engine — Frontend CSS (Shell V1) */

:root {
    --tc-eng-bg: #1a1a2e;
    --tc-eng-border: rgba(255, 255, 255, 0.08);
    --tc-eng-text: #e0e0e0;
    --tc-eng-text-sec: #aaa;
    --tc-eng-accent: #6c5ce7;
    --tc-eng-accent-alt: #a29bfe;
    --tc-eng-success: #00cec9;
    --tc-eng-warning: #fdcb6e;
    --tc-eng-radius: 10px;
    --tc-eng-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

/* ─── Base Widget Container ───────────────────────────────────────────── */

.tc-engagement-widget {
    margin: 1.5rem 0;
    padding: 1.25rem;
    border-radius: var(--tc-eng-radius);
    background: var(--tc-eng-bg);
    border: 1px solid var(--tc-eng-border);
    box-shadow: var(--tc-eng-shadow);
}

.tc-engagement-widget__title {
    font-size: 1.1em;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--tc-eng-text);
}

/* ─── Gate ────────────────────────────────────────────────────────────── */

.tc-engagement-gate {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--tc-eng-bg);
    border: 1px dashed rgba(108, 92, 231, 0.4);
    border-radius: var(--tc-eng-radius);
    margin: 1.5rem 0;
}

.tc-engagement-gate__icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.tc-engagement-gate__text {
    color: var(--tc-eng-text-sec);
    margin-bottom: 1rem;
}

.tc-engagement-gate__cta {
    display: inline-block;
    margin: 0.25rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    background: var(--tc-eng-accent);
    color: #fff;
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.2s;
    cursor: pointer;
    border: none;
}

.tc-engagement-gate__cta:hover {
    background: var(--tc-eng-accent-alt);
}

/* ─── Clash Result ────────────────────────────────────────────────────── */

.tc-engagement-widget--clash .tc-engagement-clash-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    transition: transform 0.15s, opacity 0.2s;
}

.tc-engagement-widget--clash .tc-engagement-clash-btn:hover {
    transform: scale(1.03);
}

.tc-engagement-widget--clash .tc-engagement-clash-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.tc-clash-result {
    padding: 1rem;
    border-radius: 8px;
    background: rgba(108, 92, 231, 0.1);
    border-left: 3px solid var(--tc-eng-accent);
}

.tc-clash-result__type {
    font-size: 0.85em;
    text-transform: uppercase;
    color: var(--tc-eng-accent-alt);
    margin-bottom: 0.5rem;
}

.tc-clash-result__text {
    color: var(--tc-eng-text);
    line-height: 1.6;
    margin-bottom: 0.75rem;
}

.tc-clash-result__evolution,
.tc-clash-result__challenge {
    font-size: 0.9em;
    color: var(--tc-eng-text-sec);
    margin: 0.25rem 0;
}

/* ─── Archetype Card ──────────────────────────────────────────────────── */

.tc-archetype-card {
    padding: 1.25rem;
    border-radius: var(--tc-eng-radius);
    background: linear-gradient(145deg, #1a1a2e 0%, #2d2d44 100%);
    border: 1px solid var(--tc-eng-border);
}

.tc-archetype-card__header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.tc-archetype-card__level {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--tc-eng-accent);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
}

.tc-archetype-card__dominant {
    font-size: 1.1em;
    font-weight: 600;
    color: var(--tc-eng-text);
    text-transform: capitalize;
    margin: 0;
}

.tc-archetype-card__shadow {
    font-size: 0.9em;
    color: var(--tc-eng-accent-alt);
    margin: 0.25rem 0;
}

.tc-archetype-card__readings {
    font-size: 0.8em;
    color: var(--tc-eng-text-sec);
    margin: 0.25rem 0;
}

.tc-archetype-card__evolution {
    font-size: 0.8em;
    color: var(--tc-eng-text-sec);
    margin-top: 0.75rem;
}

.tc-archetype-card__evolution span {
    display: inline-block;
    margin-right: 0.75rem;
}

.tc-archetype-empty {
    color: var(--tc-eng-text-sec);
    font-style: italic;
}

/* ─── Diary History ───────────────────────────────────────────────────── */

.tc-diary-history h4 {
    color: var(--tc-eng-text);
    margin-bottom: 0.75rem;
}

.tc-diary-history__list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tc-diary-history__item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--tc-eng-border);
}

.tc-diary-history__item:last-child {
    border-bottom: none;
}

.tc-diary-history__date {
    font-size: 0.75rem;
    color: var(--tc-eng-text-sec);
    margin-right: 0.5rem;
}

.tc-diary-history__mood {
    display: inline-block;
    padding: 0.1rem 0.5rem;
    border-radius: 10px;
    background: rgba(108, 92, 231, 0.2);
    font-size: 0.75rem;
    color: var(--tc-eng-accent-alt);
}

.tc-diary-history__text {
    color: var(--tc-eng-text);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0.25rem 0 0;
}

.tc-diary-empty {
    color: var(--tc-eng-text-sec);
    font-style: italic;
}

/* ─── Diary Save Form ─────────────────────────────────────────────────── */

.tc-engagement-widget--diary textarea {
    width: 100%;
    min-height: 80px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--tc-eng-border);
    color: var(--tc-eng-text);
    padding: 0.75rem;
    font-size: 0.9rem;
    resize: vertical;
}

.tc-engagement-widget--diary select {
    margin: 0.5rem 0;
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--tc-eng-border);
    color: var(--tc-eng-text);
}

.tc-engagement-diary-save {
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    background: var(--tc-eng-accent);
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background 0.2s;
}

.tc-engagement-diary-save:hover {
    background: var(--tc-eng-accent-alt);
}

/* ─── Arcs ────────────────────────────────────────────────────────────── */

.tc-arcs-progress h4,
.tc-arcs-available h4 {
    color: var(--tc-eng-text);
    margin-bottom: 0.75rem;
}

.tc-arcs-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    flex-wrap: wrap;
}

.tc-arcs-item__icon {
    font-size: 1.3em;
}

.tc-arcs-item__title {
    font-weight: 600;
    color: var(--tc-eng-text);
    flex: 1;
    min-width: 80px;
}

.tc-arcs-item__bar {
    flex: 2;
    min-width: 80px;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.tc-arcs-item__fill {
    height: 100%;
    background: linear-gradient(90deg, var(--tc-eng-accent), var(--tc-eng-success));
    border-radius: 3px;
    transition: width 0.3s;
}

.tc-arcs-item__label {
    font-size: 0.8em;
    color: var(--tc-eng-text-sec);
    min-width: 40px;
}

.tc-arcs-advance,
.tc-arcs-start {
    padding: 0.3rem 0.7rem;
    border-radius: 5px;
    background: var(--tc-eng-accent);
    color: #fff;
    border: none;
    font-size: 0.8rem;
    cursor: pointer;
}

.tc-arcs-advance:hover,
.tc-arcs-start:hover {
    background: var(--tc-eng-accent-alt);
}

/* ─── Astro ───────────────────────────────────────────────────────────── */

.tc-astro-widget {
    padding: 0.5rem 0;
}

.tc-astro-phase {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    color: var(--tc-eng-text);
    margin-bottom: 0.5rem;
}

.tc-astro-phase__icon {
    font-size: 1.4em;
}

.tc-astro-rec {
    font-size: 0.85rem;
    color: var(--tc-eng-text-sec);
    margin: 0.25rem 0;
}

.tc-astro-fomo-banner {
    margin-top: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(253, 203, 110, 0.15), rgba(108, 92, 231, 0.15));
    border: 1px solid var(--tc-eng-warning);
    animation: tc-fomo-pulse 2s infinite alternate;
}

.tc-astro-fomo-banner p {
    margin: 0 0 0.5rem;
    color: var(--tc-eng-warning);
    font-weight: 500;
}

@keyframes tc-fomo-pulse {
    0% { border-color: var(--tc-eng-warning); }
    100% { border-color: var(--tc-eng-accent); }
}

/* ─── Notification Toast ──────────────────────────────────────────────── */

.tc-notification-toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    max-width: 320px;
    padding: 1rem 1.25rem;
    border-radius: var(--tc-eng-radius);
    background: #2d2d44;
    border: 1px solid var(--tc-eng-accent);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    z-index: 99999;
    animation: tc-toast-in 0.3s ease-out;
}

.tc-notification-toast strong {
    display: block;
    color: var(--tc-eng-accent-alt);
    margin-bottom: 0.25rem;
}

.tc-notification-toast p {
    color: var(--tc-eng-text);
    font-size: 0.9rem;
    margin: 0;
}

.tc-notification-toast__close {
    position: absolute;
    top: 6px;
    right: 8px;
    background: none;
    border: none;
    color: var(--tc-eng-text-sec);
    cursor: pointer;
    font-size: 1rem;
}

@keyframes tc-toast-in {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.tc-notification-badge {
    display: none;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #e74c3c;
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0 4px;
}

/* ─── Social Feed ─────────────────────────────────────────────────────── */

.tc-social-feed__theme {
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    background: rgba(108, 92, 231, 0.1);
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--tc-eng-accent-alt);
}

.tc-social-feed__post {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--tc-eng-border);
}

.tc-social-feed__post:last-child {
    border-bottom: none;
}

.tc-social-feed__author {
    font-weight: 600;
    color: var(--tc-eng-text);
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.tc-social-feed__author small {
    font-weight: 400;
    color: var(--tc-eng-accent-alt);
}

.tc-social-feed__text {
    color: var(--tc-eng-text);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0.25rem 0;
}

.tc-social-feed__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--tc-eng-text-sec);
    margin-top: 0.25rem;
}

.tc-social-react-btn {
    background: none;
    border: 1px solid var(--tc-eng-border);
    border-radius: 14px;
    padding: 0.2rem 0.6rem;
    color: var(--tc-eng-accent-alt);
    font-size: 0.8rem;
    cursor: pointer;
    transition: background 0.2s;
}

.tc-social-react-btn:hover {
    background: rgba(108, 92, 231, 0.15);
}

.tc-social-react-btn:disabled {
    opacity: 0.5;
    cursor: default;
}

/* ─── Memory Timeline ─────────────────────────────────────────────────── */

.tc-memory-timeline h4 {
    color: var(--tc-eng-text);
    margin-bottom: 0.75rem;
}

.tc-memory-timeline__items {
    position: relative;
    padding-left: 1rem;
    border-left: 2px solid var(--tc-eng-accent);
}

.tc-memory-timeline__item {
    padding: 0.5rem 0 0.5rem 0.75rem;
    position: relative;
}

.tc-memory-timeline__item::before {
    content: '';
    position: absolute;
    left: -1.35rem;
    top: 0.75rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--tc-eng-accent);
}

.tc-memory-timeline__date {
    font-size: 0.75rem;
    color: var(--tc-eng-text-sec);
}

.tc-memory-timeline__spread {
    display: inline-block;
    margin-left: 0.5rem;
    font-size: 0.85rem;
    color: var(--tc-eng-text);
}

.tc-memory-timeline__theme {
    display: block;
    font-size: 0.8rem;
    color: var(--tc-eng-accent-alt);
}

.tc-memory-empty {
    color: var(--tc-eng-text-sec);
    font-style: italic;
}

/* ─── Suggestions ─────────────────────────────────────────────────────── */

.tc-suggestion-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--tc-eng-border);
    margin-bottom: 0.5rem;
    transition: border-color 0.2s;
}

.tc-suggestion-card:hover {
    border-color: var(--tc-eng-accent);
}

.tc-suggestion-card__reason {
    flex: 1;
    font-size: 0.85rem;
    color: var(--tc-eng-text-sec);
}

.tc-suggestion-card__name {
    font-weight: 600;
    color: var(--tc-eng-text);
    font-size: 0.95rem;
}

.tc-playlist-add-btn {
    padding: 0.3rem 0.6rem;
    border-radius: 5px;
    background: var(--tc-eng-success);
    color: #fff;
    border: none;
    font-size: 0.75rem;
    cursor: pointer;
}

.tc-playlist-add-btn:disabled {
    background: var(--tc-eng-text-sec);
    cursor: default;
}

/* ─── Quiz Widget ─────────────────────────────────────────────────────── */

.tc-quiz-container {
    padding: 1rem;
}

.tc-quiz-question {
    color: var(--tc-eng-text);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.tc-quiz-option {
    display: block;
    width: 100%;
    text-align: left;
    padding: 0.6rem 1rem;
    margin-bottom: 0.5rem;
    border-radius: 6px;
    border: 1px solid var(--tc-eng-border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--tc-eng-text);
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

.tc-quiz-option:hover {
    border-color: var(--tc-eng-accent);
    background: rgba(108, 92, 231, 0.1);
}

.tc-quiz-result {
    text-align: center;
    padding: 1.5rem;
}

.tc-quiz-result h3 {
    color: var(--tc-eng-accent-alt);
}

/* ─── Playlist Widget ─────────────────────────────────────────────────── */

.tc-playlist-items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tc-playlist-items li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--tc-eng-border);
}

.tc-playlist-items li:last-child {
    border-bottom: none;
}

.tc-playlist-items .tc-playlist-spread {
    color: var(--tc-eng-text);
    font-size: 0.9rem;
}

.tc-playlist-items .tc-playlist-remove {
    background: none;
    border: none;
    color: #e74c3c;
    cursor: pointer;
    font-size: 0.85rem;
}

/* ─── Onboarding Wizard ───────────────────────────────────────────────── */

.tc-onboarding-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: tc-fade-in 0.3s ease-out;
}

.tc-onboarding-modal {
    background: var(--tc-eng-bg, #1a1a2e);
    border: 1px solid var(--tc-eng-accent, #6c5ce7);
    border-radius: 12px;
    padding: 2rem;
    max-width: 420px;
    width: 90%;
    box-shadow: 0 8px 40px rgba(108, 92, 231, 0.3);
}

.tc-onboarding-content h3 {
    color: var(--tc-eng-accent-alt, #a29bfe);
    margin: 0 0 0.75rem;
}

.tc-onboarding-content p {
    color: var(--tc-eng-text, #e0e0e0);
    line-height: 1.6;
    margin: 0;
}

.tc-onboarding-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 1.5rem;
    gap: 0.5rem;
}

.tc-onboarding-skip {
    background: none;
    border: none;
    color: var(--tc-eng-text-sec, #aaa);
    cursor: pointer;
    font-size: 0.85rem;
}

.tc-onboarding-next {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    background: var(--tc-eng-accent, #6c5ce7);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
}

.tc-onboarding-dots {
    display: flex;
    gap: 4px;
}

.tc-onboarding-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
}

.tc-onboarding-dot.active {
    background: var(--tc-eng-accent, #6c5ce7);
}

.tc-onboarding-highlight {
    outline: 2px solid var(--tc-eng-accent, #6c5ce7) !important;
    outline-offset: 4px;
    animation: tc-highlight-pulse 1s infinite alternate;
}

@keyframes tc-highlight-pulse {
    from { outline-color: var(--tc-eng-accent); }
    to { outline-color: var(--tc-eng-accent-alt); }
}

@keyframes tc-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ─── Accessibility ───────────────────────────────────────────────────── */

.tc-skip-link:focus {
    top: 0 !important;
    outline: 2px solid var(--tc-eng-accent, #6c5ce7);
}

*:focus-visible {
    outline: 2px solid var(--tc-eng-accent, #6c5ce7);
    outline-offset: 2px;
}

.tc-push-subscribe-btn {
    display: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    background: var(--tc-eng-accent, #6c5ce7);
    color: #fff;
    border: none;
    cursor: pointer;
    margin: 0.5rem 0;
}

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

.tc-export-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin: 1rem 0;
}

.tc-export-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    background: var(--tc-eng-accent, #6c5ce7);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 0.85rem;
    text-decoration: none;
    transition: background 0.2s;
}

.tc-export-btn:hover {
    background: var(--tc-eng-accent-alt, #a29bfe);
}

.tc-export-btn--danger {
    background: #e74c3c;
}

.tc-export-btn--danger:hover {
    background: #c0392b;
}

/* ═══════════════════════════════════════════════════════════════════════════
   PREMIUM DESIGN SYSTEM — Gradients, Animations, Grid, Dark/Light Mode
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Dark/Light Mode Variables ───────────────────────────────────────── */

:root {
    --tc-eng-gradient-quiz: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
    --tc-eng-gradient-clash: linear-gradient(135deg, #2d1b69 0%, #6c5ce7 100%);
    --tc-eng-gradient-astro: linear-gradient(135deg, #0c3547 0%, #1a535c 100%);
    --tc-eng-gradient-diary: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --tc-eng-gradient-arcs: linear-gradient(135deg, #2d1b69 0%, #4a0e8f 100%);
    --tc-eng-gradient-social: linear-gradient(135deg, #1a1a2e 0%, #2d3436 100%);
    --tc-eng-gradient-gold: linear-gradient(135deg, #f5af19 0%, #f12711 100%);
    --tc-eng-glass-bg: rgba(255, 255, 255, 0.05);
    --tc-eng-glass-border: rgba(255, 255, 255, 0.1);
    --tc-eng-card-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --tc-eng-card-hover-shadow: 0 8px 32px rgba(108, 92, 231, 0.3);
}

[data-theme="light"],
.tc-theme-light {
    --tc-eng-bg: #f8f9fa;
    --tc-eng-border: rgba(0, 0, 0, 0.08);
    --tc-eng-text: #2d3436;
    --tc-eng-text-sec: #636e72;
    --tc-eng-glass-bg: rgba(255, 255, 255, 0.85);
    --tc-eng-glass-border: rgba(0, 0, 0, 0.06);
    --tc-eng-card-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    --tc-eng-card-hover-shadow: 0 8px 24px rgba(108, 92, 231, 0.15);
    --tc-eng-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* ─── Premium Card Styles ─────────────────────────────────────────────── */

.tc-quiz-widget,
.tc-playlist-widget,
.tc-clash-result,
.tc-archetype-card,
.tc-diary-widget,
.tc-arcs-progress,
.tc-arcs-available,
.tc-astro-widget,
.tc-suggestions,
.tc-social-feed,
.tc-memory-widget,
.tc-export-widget {
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--tc-eng-glass-border);
    box-shadow: var(--tc-eng-card-shadow);
    backdrop-filter: blur(8px);
    transition: box-shadow 0.3s ease, transform 0.2s ease;
}

.tc-quiz-widget:hover,
.tc-archetype-card:hover,
.tc-arcs-progress:hover,
.tc-astro-widget:hover {
    box-shadow: var(--tc-eng-card-hover-shadow);
    transform: translateY(-2px);
}

/* ─── Quiz Premium Styles ─────────────────────────────────────────────── */

.tc-quiz-question {
    text-align: center;
    padding: 2rem 1rem;
}

.tc-quiz-question__progress {
    margin-bottom: 1.5rem;
}

.tc-quiz-question__bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin-top: 0.5rem;
    overflow: hidden;
}

.tc-quiz-question__bar > div {
    height: 100%;
    background: var(--tc-eng-gradient-quiz);
    border-radius: 2px;
    transition: width 0.4s ease;
}

.tc-quiz-question__text {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.tc-quiz-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.75rem;
    max-width: 600px;
    margin: 0 auto;
}

.tc-quiz-option {
    padding: 1rem;
    border-radius: 10px;
    background: var(--tc-eng-glass-bg);
    border: 1px solid var(--tc-eng-glass-border);
    color: var(--tc-eng-text);
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.25s ease;
}

.tc-quiz-option:hover {
    background: rgba(108, 92, 231, 0.15);
    border-color: var(--tc-eng-accent);
    transform: scale(1.03);
}

.tc-quiz-option--selected {
    background: var(--tc-eng-gradient-quiz) !important;
    color: #fff !important;
    border-color: transparent !important;
    transform: scale(0.97);
}

.tc-quiz-timer {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    background: rgba(231, 76, 60, 0.2);
    color: #e74c3c;
}

.tc-quiz-loading {
    text-align: center;
    padding: 3rem 1rem;
    font-size: 1.1rem;
}

.tc-quiz-result {
    text-align: center;
    padding: 2rem;
    animation: tc-scale-in 0.4s ease;
}

.tc-quiz-result__title {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    background: var(--tc-eng-gradient-quiz);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tc-quiz-result__card {
    padding: 2rem;
    border-radius: 12px;
    background: var(--tc-eng-glass-bg);
    border: 1px solid var(--tc-eng-glass-border);
    margin-bottom: 1rem;
}

.tc-quiz-result__icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.tc-quiz-result__cta {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    background: var(--tc-eng-gradient-quiz);
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s ease;
}

.tc-quiz-result__cta:hover {
    transform: scale(1.05);
}

.tc-quiz-result__xp {
    margin-top: 1rem;
    color: var(--tc-eng-success);
    font-weight: 600;
}

/* ─── Clash Result Animation ──────────────────────────────────────────── */

.tc-clash-result--reveal {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.6s ease, transform 0.6s ease;
    background: var(--tc-eng-gradient-clash);
}

.tc-clash-result--visible {
    opacity: 1;
    transform: scale(1);
}

.tc-clash-result__header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.tc-clash-result__icon {
    font-size: 2rem;
    animation: tc-pulse 2s infinite;
}

.tc-clash-result__type {
    font-size: 1.2rem;
    background: linear-gradient(90deg, #fff 0%, #a29bfe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tc-clash-result__body {
    line-height: 1.7;
}

.tc-clash-result__section {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-left: 3px solid var(--tc-eng-accent);
}

.tc-clash-result__section--challenge {
    border-left-color: var(--tc-eng-warning);
}

/* ─── Archetype Card Premium ──────────────────────────────────────────── */

.tc-archetype-card {
    background: var(--tc-eng-gradient-clash);
    position: relative;
    overflow: hidden;
}

.tc-archetype-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.1) 0%, transparent 70%);
    animation: tc-orbit 20s linear infinite;
}

.tc-archetype-card__header {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.tc-archetype-card__level-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    background: var(--tc-eng-gradient-gold);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
}

.tc-archetype-card__dominant {
    font-size: 1.3rem;
    margin: 0;
}

.tc-archetype-card__body {
    position: relative;
    z-index: 1;
}

.tc-archetype-card__shadow {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.2);
    margin: 0.75rem 0;
}

.tc-archetype-card__evo-timeline {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.tc-archetype-evo-dot {
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    background: rgba(108, 92, 231, 0.2);
    font-size: 0.75rem;
}

.tc-archetype-tag,
.tc-archetype-theme-tag {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    background: rgba(162, 155, 254, 0.15);
    font-size: 0.8rem;
    margin: 0.2rem;
}

.tc-archetype-card__footer {
    position: relative;
    z-index: 1;
    margin-top: 1.25rem;
    text-align: center;
}

.tc-archetype-empty {
    text-align: center;
    padding: 2rem;
}

.tc-archetype-empty__icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 0.75rem;
    animation: tc-float 3s ease-in-out infinite;
}

/* ─── Diary Widget Premium ────────────────────────────────────────────── */

.tc-diary-streak {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    background: rgba(253, 203, 110, 0.15);
    border: 1px solid rgba(253, 203, 110, 0.3);
    margin-bottom: 1rem;
    width: fit-content;
}

.tc-diary-streak__fire {
    animation: tc-pulse 1.5s infinite;
}

.tc-diary-form__prompt {
    font-style: italic;
    color: var(--tc-eng-accent-alt);
    margin-bottom: 1rem;
    padding-left: 1rem;
    border-left: 2px solid var(--tc-eng-accent);
}

.tc-diary-form__textarea {
    width: 100%;
    padding: 1rem;
    border-radius: 8px;
    background: var(--tc-eng-glass-bg);
    border: 1px solid var(--tc-eng-glass-border);
    color: var(--tc-eng-text);
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
    transition: border-color 0.2s;
}

.tc-diary-form__textarea:focus {
    border-color: var(--tc-eng-accent);
    outline: none;
}

.tc-diary-form__textarea--error {
    border-color: #e74c3c;
    animation: tc-shake 0.3s;
}

.tc-diary-form__options {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin: 1rem 0;
    flex-wrap: wrap;
}

.tc-diary-form__mood {
    padding: 0.5rem;
    border-radius: 6px;
    background: var(--tc-eng-glass-bg);
    border: 1px solid var(--tc-eng-glass-border);
    color: var(--tc-eng-text);
}

.tc-diary-history__item {
    padding: 1rem;
    border-radius: 8px;
    background: var(--tc-eng-glass-bg);
    margin-bottom: 0.75rem;
    border-left: 3px solid var(--tc-eng-accent);
    transition: background 0.2s;
}

.tc-diary-history__item:hover {
    background: rgba(108, 92, 231, 0.08);
}

.tc-diary-history__meta {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
    color: var(--tc-eng-text-sec);
}

/* ─── Arcs Premium ────────────────────────────────────────────────────── */

.tc-arcs-title {
    margin-bottom: 1.25rem;
}

.tc-arcs-item {
    padding: 1.25rem;
    border-radius: 10px;
    background: var(--tc-eng-glass-bg);
    border: 1px solid var(--tc-eng-glass-border);
    margin-bottom: 1rem;
    transition: transform 0.2s;
}

.tc-arcs-item:hover {
    transform: translateX(4px);
}

.tc-arcs-item--completed {
    border-color: var(--tc-eng-success);
}

.tc-arcs-item__header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.tc-arcs-item__icon {
    font-size: 1.5rem;
}

.tc-arcs-item__bar-wrapper {
    margin-bottom: 0.75rem;
}

.tc-arcs-item__bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.tc-arcs-item__fill {
    height: 100%;
    background: var(--tc-eng-gradient-arcs);
    border-radius: 3px;
    transition: width 0.6s ease;
}

.tc-arcs-item__chapter {
    font-size: 0.85rem;
    color: var(--tc-eng-text-sec);
    margin-bottom: 0.5rem;
}

.tc-arcs-item__done {
    color: var(--tc-eng-success);
    font-weight: 600;
}

.tc-arcs-available__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.tc-arcs-available__card {
    padding: 1.5rem;
    border-radius: 12px;
    background: var(--tc-eng-glass-bg);
    border: 1px solid var(--tc-eng-glass-border);
    text-align: center;
    transition: all 0.3s ease;
}

.tc-arcs-available__card:hover {
    border-color: var(--tc-eng-accent);
    box-shadow: var(--tc-eng-card-hover-shadow);
    transform: translateY(-4px);
}

.tc-arcs-available__icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.75rem;
}

/* ─── Astro Premium ───────────────────────────────────────────────────── */

.tc-astro-widget {
    background: var(--tc-eng-gradient-astro);
}

.tc-astro-phase {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.tc-astro-phase__icon {
    font-size: 2.5rem;
    animation: tc-float 4s ease-in-out infinite;
}

.tc-astro-recommended__list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.tc-astro-recommended__item {
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    background: rgba(108, 92, 231, 0.2);
    color: var(--tc-eng-accent-alt);
    text-decoration: none;
    font-size: 0.85rem;
    transition: background 0.2s;
}

.tc-astro-recommended__item:hover {
    background: rgba(108, 92, 231, 0.4);
}

.tc-astro-retrograde {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    background: rgba(253, 203, 110, 0.1);
    border: 1px solid rgba(253, 203, 110, 0.3);
    margin: 1rem 0;
    font-size: 0.9rem;
}

.tc-astro-fomo-banner {
    margin-top: 1.25rem;
    padding: 1rem 1.25rem;
    border-radius: 10px;
    background: var(--tc-eng-gradient-gold);
    color: #fff;
}

.tc-astro-fomo-banner--pulse {
    animation: tc-pulse-bg 3s infinite;
}

.tc-astro-fomo-banner__content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.tc-astro-fomo-banner__icon {
    font-size: 1.5rem;
}

.tc-astro-fomo-cta {
    background: rgba(255, 255, 255, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: #fff !important;
}

/* ─── Memory Timeline Premium ─────────────────────────────────────────── */

.tc-memory-timeline__items {
    position: relative;
    padding-left: 2rem;
}

.tc-memory-timeline__items::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--tc-eng-accent), transparent);
}

.tc-memory-timeline__item {
    position: relative;
    padding: 0.75rem 0;
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.tc-memory-timeline__dot {
    position: absolute;
    left: -1.75rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--theme-color, var(--tc-eng-accent));
    border: 2px solid var(--tc-eng-bg);
}

.tc-memory-constellation__map {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    padding: 1rem;
}

.tc-memory-constellation__node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
}

.tc-memory-constellation__circle {
    width: var(--size, 40px);
    height: var(--size, 40px);
    border-radius: 50%;
    background: var(--tc-eng-gradient-quiz);
    opacity: 0.7;
}

.tc-memory-patterns {
    margin-bottom: 1.25rem;
    padding: 1rem;
    border-radius: 8px;
    background: rgba(108, 92, 231, 0.08);
}

.tc-memory-pattern {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0;
}

/* ─── Suggestions Premium ─────────────────────────────────────────────── */

.tc-suggestions__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.tc-suggestions__ai-badge {
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    background: var(--tc-eng-gradient-quiz);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
}

.tc-suggestions__item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    border-radius: 8px;
    background: var(--tc-eng-glass-bg);
    border: 1px solid var(--tc-eng-glass-border);
    margin-bottom: 0.5rem;
    transition: border-color 0.2s;
}

.tc-suggestions__item--high {
    border-left: 3px solid var(--tc-eng-success);
}

.tc-suggestions__item--medium {
    border-left: 3px solid var(--tc-eng-warning);
}

.tc-suggestions__item--low {
    border-left: 3px solid var(--tc-eng-text-sec);
}

.tc-suggestions__item-reason {
    font-size: 0.85rem;
    color: var(--tc-eng-text-sec);
    margin-top: 0.25rem;
}

.tc-suggestions__item-actions {
    display: flex;
    gap: 0.5rem;
}

/* ─── Social Feed Premium ─────────────────────────────────────────────── */

.tc-social-feed__theme {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: 10px;
    background: rgba(108, 92, 231, 0.1);
    border: 1px solid rgba(108, 92, 231, 0.2);
    margin-bottom: 1.25rem;
}

.tc-social-feed__theme-icon {
    font-size: 1.5rem;
}

.tc-social-feed__post {
    padding: 1.25rem;
    border-radius: 10px;
    background: var(--tc-eng-glass-bg);
    border: 1px solid var(--tc-eng-glass-border);
    margin-bottom: 0.75rem;
    transition: background 0.2s;
}

.tc-social-feed__post:hover {
    background: rgba(108, 92, 231, 0.05);
}

.tc-social-feed__author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.tc-social-feed__avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--tc-eng-gradient-quiz);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
}

.tc-social-feed__badge {
    font-size: 0.75rem;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    background: rgba(162, 155, 254, 0.2);
}

.tc-social-feed__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.75rem;
    font-size: 0.85rem;
}

.tc-social-react-btn {
    padding: 0.3rem 0.7rem;
    border-radius: 16px;
    background: var(--tc-eng-glass-bg);
    border: 1px solid var(--tc-eng-glass-border);
    color: var(--tc-eng-text);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.tc-social-react-btn:hover:not(:disabled) {
    background: rgba(108, 92, 231, 0.15);
    border-color: var(--tc-eng-accent);
}

/* ─── Gate Overlay Glassmorphism ──────────────────────────────────────── */

.tc-gate-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(6px);
    animation: tc-fade-in 0.3s ease;
}

.tc-gate-overlay--exit {
    animation: tc-fade-out 0.3s ease forwards;
}

.tc-gate-overlay__card {
    position: relative;
    padding: 2.5rem;
    border-radius: 16px;
    background: rgba(26, 26, 46, 0.95);
    border: 1px solid var(--tc-eng-glass-border);
    backdrop-filter: blur(12px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
    max-width: 420px;
    width: 90%;
    text-align: center;
    animation: tc-scale-in 0.3s ease;
}

.tc-gate-overlay__close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--tc-eng-text-sec);
    font-size: 1.2rem;
    cursor: pointer;
}

.tc-gate-overlay__options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.tc-gate-overlay__credits {
    background: var(--tc-eng-gradient-quiz) !important;
}

.tc-gate-overlay__premium {
    background: var(--tc-eng-gradient-gold) !important;
}

/* ─── Export Widget Premium ────────────────────────────────────────────── */

.tc-export-widget__actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin: 1.25rem 0;
}

.tc-export-widget__progress {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 8px;
    background: var(--tc-eng-glass-bg);
}

.tc-export-widget__bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin-bottom: 0.5rem;
    overflow: hidden;
}

.tc-export-widget__fill {
    height: 100%;
    width: 0%;
    background: var(--tc-eng-gradient-quiz);
    border-radius: 2px;
    transition: width 0.5s ease;
}

/* ─── Notification Toast Premium ──────────────────────────────────────── */

.tc-notification-toast {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 99990;
    max-width: 360px;
    width: calc(100% - 3rem);
    border-radius: 12px;
    background: rgba(26, 26, 46, 0.98);
    border: 1px solid var(--tc-eng-glass-border);
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}

.tc-notification-toast--enter {
    animation: tc-slide-in-right 0.4s ease;
}

.tc-notification-toast--exit {
    animation: tc-slide-out-right 0.3s ease forwards;
}

.tc-notification-toast__content {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
}

.tc-notification-toast__icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tc-notification-toast__close {
    position: absolute;
    top: 0.5rem;
    right: 0.75rem;
    background: none;
    border: none;
    color: var(--tc-eng-text-sec);
    cursor: pointer;
    font-size: 0.9rem;
}

.tc-notification-badge--active {
    animation: tc-pulse 2s infinite;
}

/* ─── Onboarding Premium ──────────────────────────────────────────────── */

.tc-onboarding-overlay {
    position: fixed;
    inset: 0;
    z-index: 100000;
    animation: tc-fade-in 0.3s;
}

.tc-onboarding-overlay--exit {
    animation: tc-fade-out 0.3s forwards;
}

.tc-onboarding-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.tc-onboarding-tooltip {
    position: absolute;
    z-index: 100001;
    padding: 1.5rem;
    border-radius: 12px;
    background: rgba(26, 26, 46, 0.98);
    border: 1px solid var(--tc-eng-accent);
    box-shadow: 0 8px 32px rgba(108, 92, 231, 0.3);
    max-width: 350px;
    animation: tc-scale-in 0.3s ease;
}

.tc-onboarding-tooltip__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.tc-onboarding-tooltip__icon {
    font-size: 1.5rem;
}

.tc-onboarding-tooltip__progress {
    font-size: 0.8rem;
    color: var(--tc-eng-text-sec);
}

.tc-onboarding-tooltip__actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.tc-onboarding-highlight {
    position: relative;
    z-index: 100000;
    outline: 2px solid var(--tc-eng-accent) !important;
    outline-offset: 4px;
    animation: tc-highlight-pulse 1.5s infinite alternate;
}

/* ─── Spinner ─────────────────────────────────────────────────────────── */

.tc-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: tc-spin 0.6s linear infinite;
}

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

.btn-outline {
    background: transparent !important;
    border: 1px solid var(--tc-eng-accent) !important;
    color: var(--tc-eng-accent) !important;
}

.btn-outline:hover {
    background: rgba(108, 92, 231, 0.1) !important;
}

.btn-danger {
    background: #e74c3c !important;
    color: #fff !important;
}

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

@media (max-width: 768px) {
    .tc-quiz-options {
        grid-template-columns: 1fr;
    }

    .tc-arcs-available__grid {
        grid-template-columns: 1fr;
    }

    .tc-suggestions__item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .tc-export-widget__actions {
        flex-direction: column;
    }

    .tc-gate-overlay__card {
        width: 95%;
        padding: 1.5rem;
    }

    .tc-notification-toast {
        bottom: 0.5rem;
        right: 0.5rem;
        width: calc(100% - 1rem);
    }
}

/* ─── Animations ──────────────────────────────────────────────────────── */

@keyframes tc-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@keyframes tc-pulse-bg {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.85; }
}

@keyframes tc-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

@keyframes tc-orbit {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes tc-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes tc-scale-in {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes tc-fade-out {
    from { opacity: 1; }
    to { opacity: 0; }
}

@keyframes tc-slide-in-right {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes tc-slide-out-right {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

@keyframes tc-shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}