/* Modern BEM Styling for LexiTact */
.wpwu-container {
    max-width: 600px;
    margin: 2rem auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: #333;
}

.wpwu-form {
    background: #ffffff;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0,0,0,0.05);
    text-align: center;
}

.wpwu-heading {
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: #111;
    font-weight: 700;
}

.wpwu-input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 1rem;
}

.wpwu-input {
    flex: 1;
    padding: 0.8rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    text-transform: uppercase;
}

.wpwu-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.wpwu-btn {
    background: #3b82f6;
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 130px;
}

.wpwu-btn:hover {
    background: #2563eb;
}

.wpwu-btn:active {
    transform: scale(0.98);
}

.wpwu-btn--loading {
    background: #93c5fd;
    cursor: not-allowed;
}

.wpwu-btn--loading .wpwu-btn-text {
    display: none;
}

.wpwu-btn--loading .wpwu-spinner {
    display: block !important;
}

.wpwu-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: wpwu-spin 1s linear infinite;
}

@keyframes wpwu-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.wpwu-error-msg {
    color: #ef4444;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    text-align: left;
}

/* Advanced Board Filters */
.wpwu-filters {
    display: flex;
    gap: 10px;
    margin-top: 0.25rem;
    margin-bottom: 0.5rem;
}

.wpwu-filter-group {
    flex: 1;
    text-align: left;
}

.wpwu-filter-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: #6b7280;
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.wpwu-filter-input {
    width: 100%;
    padding: 0.45rem 0.6rem;
    border: 2px solid #e2e8f0;
    border-radius: 6px;
    font-size: 0.85rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    text-transform: uppercase;
    box-sizing: border-box;
}

.wpwu-filter-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Results Area */
.wpwu-results {
    margin-top: 2rem;
}

.wpwu-group {
    background: #ffffff;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0,0,0,0.05);
    margin-bottom: 1.5rem;
}

.wpwu-group-heading {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    color: #1f2937;
    border-bottom: 2px solid #f3f4f6;
    padding-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.wpwu-badge {
    background: #e0f2fe;
    color: #0284c7;
    font-size: 0.8rem;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-weight: 600;
}

.wpwu-word-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.wpwu-word-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    color: #334155;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.1s ease;
    user-select: none;
}

.wpwu-word-item:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
}

.wpwu-word-item:active {
    transform: scale(0.96);
}

/* Scrabble Score Badge */
.wpwu-score-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #78350f;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 4px;
    line-height: 1;
    letter-spacing: 0.02em;
}

/* Copied feedback — floating indicator */
.wpwu-copied-indicator {
    position: absolute;
    z-index: 10001;
    padding: 0.3rem 0.75rem;
    background: #10b981;
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 700;
    border-radius: 6px;
    pointer-events: none;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
    animation: wpwu-copied-float 1s ease forwards;
}

@keyframes wpwu-copied-float {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    70% {
        opacity: 1;
        transform: translateY(-20px);
    }
    100% {
        opacity: 0;
        transform: translateY(-30px);
    }
}

@media (max-width: 480px) {
    .wpwu-input-group {
        flex-direction: column;
    }
    
    .wpwu-btn {
        width: 100%;
    }

    .wpwu-filters {
        flex-direction: column;
        gap: 8px;
    }
}

/* Word Definition Tooltip */
.wpwu-tooltip {
    position: absolute;
    z-index: 10000;
    max-width: 250px;
    background: #ffffff;
    border-radius: 10px;
    padding: 1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(0, 0, 0, 0.08);
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform: translateY(10px);
    font-family: inherit;
}

.wpwu-tooltip--visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.wpwu-tooltip__word {
    display: block;
    font-weight: 700;
    font-size: 1rem;
    color: #111;
    margin-bottom: 0.25rem;
    text-transform: capitalize;
}

.wpwu-tooltip__pos {
    display: inline-block;
    font-style: italic;
    font-size: 0.8rem;
    color: #3b82f6;
    margin-bottom: 0.5rem;
}

.wpwu-tooltip__definition {
    font-size: 0.9rem;
    line-height: 1.4;
    color: #4b5563;
}

.wpwu-tooltip__loading {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: #6b7280;
}

.wpwu-tooltip__spinner {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(59, 130, 246, 0.1);
    border-top: 2px solid #3b82f6;
    border-radius: 50%;
    animation: wpwu-spin 0.8s linear infinite;
}