/**
 * Licznik Slow v2.2.2 - Base Styles
 * Core styles for the word counter widget
 *
 * @package Licznik_Slow
 */

/* ==========================================================================
   CSS Custom Properties (Theming)
   ========================================================================== */
:root {
    /* Colors */
    --ls-primary-color: #37352f;
    --ls-secondary-color: #6b7280;
    --ls-accent-color: #2563eb;
    --ls-accent-hover: #1d4ed8;
    --ls-accent-light: #dbeafe;
    --ls-success-color: #10b981;
    --ls-warning-color: #f59e0b;
    --ls-danger-color: #ef4444;
    --ls-background: #ffffff;
    --ls-surface: #f9fafb;
    --ls-surface-hover: #f3f4f6;
    --ls-border: #e5e7eb;
    --ls-border-focus: #2563eb;

    /* Shadows */
    --ls-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --ls-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --ls-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --ls-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);

    /* Border Radius */
    --ls-radius-sm: 6px;
    --ls-radius-md: 8px;
    --ls-radius-lg: 12px;
    --ls-radius-xl: 16px;

    /* Transitions */
    --ls-transition-fast: 100ms ease;
    --ls-transition: 150ms ease;
    --ls-transition-slow: 250ms ease;

    /* Typography */
    --ls-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ==========================================================================
   Container
   ========================================================================== */
.licznik-slow-container {
    font-family: var(--ls-font-family);
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1rem;
    color: var(--ls-primary-color);
    line-height: 1.6;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity var(--ls-transition-slow), transform var(--ls-transition-slow);
}

.licznik-slow-container.ls-loaded {
    opacity: 1;
    transform: translateY(0);
}

.licznik-slow-container *,
.licznik-slow-container *::before,
.licznik-slow-container *::after {
    box-sizing: border-box;
}

/* ==========================================================================
   Textarea Section (TOP)
   ========================================================================== */
.ls-textarea-wrapper {
    position: relative;
    margin-bottom: 1.25rem;
}

.ls-textarea {
    width: 100%;
    min-height: 200px;
    max-height: 500px;
    padding: 1rem 1.25rem;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--ls-primary-color);
    background: var(--ls-background);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius-lg);
    resize: vertical;
    transition: border-color var(--ls-transition), box-shadow var(--ls-transition);
    box-shadow: var(--ls-shadow-xs);
}

.ls-textarea:hover {
    border-color: #d1d5db;
}

.ls-textarea:focus {
    outline: none;
    border-color: var(--ls-border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.ls-textarea::placeholder {
    color: var(--ls-secondary-color);
    opacity: 0.6;
}

/* Textarea Actions */
.ls-textarea-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.ls-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.875rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--ls-secondary-color);
    background: var(--ls-surface);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius-md);
    cursor: pointer;
    transition: all var(--ls-transition);
}

.ls-action-btn:hover {
    color: var(--ls-primary-color);
    background: var(--ls-surface-hover);
    border-color: #d1d5db;
}

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

.ls-action-btn svg {
    flex-shrink: 0;
    opacity: 0.7;
}

.ls-action-btn:hover svg {
    opacity: 1;
}

.ls-action-btn.ls-copied {
    color: var(--ls-success-color);
    border-color: var(--ls-success-color);
    background: #ecfdf5;
}

/* Checkbox Label */
.ls-checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.875rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--ls-secondary-color);
    background: var(--ls-surface);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius-md);
    cursor: pointer;
    transition: all var(--ls-transition);
    user-select: none;
}

.ls-checkbox-label:hover {
    color: var(--ls-primary-color);
    background: var(--ls-surface-hover);
    border-color: #d1d5db;
}

.ls-checkbox-label input[type="checkbox"] {
    width: 14px;
    height: 14px;
    margin: 0;
    cursor: pointer;
    accent-color: var(--ls-accent-color);
}

.ls-checkbox-label.ls-active {
    color: var(--ls-danger-color);
    border-color: var(--ls-danger-color);
    background: #fef2f2;
}

/* Textarea Container with Overlay */
.ls-textarea-container {
    position: relative;
}

.ls-text-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 1rem 1.25rem;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.7;
    color: transparent;
    background: transparent;
    pointer-events: none;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow: hidden;
    border: 1px solid transparent;
    border-radius: var(--ls-radius-lg);
    z-index: 1;
}

.ls-textarea-container .ls-textarea {
    position: relative;
    background: var(--ls-background);
    z-index: 2;
}

.ls-textarea-container.ls-overlay-active .ls-textarea {
    background: transparent;
}

.ls-textarea-container.ls-overlay-active .ls-text-overlay {
    background: var(--ls-background);
    z-index: 0;
}

/* Difficult sentence highlighting */
.ls-difficult {
    background: rgba(239, 68, 68, 0.2);
    border-radius: 2px;
    color: transparent;
    padding: 0 2px;
    margin: 0 -2px;
}

/* ==========================================================================
   Main Stats Bar
   ========================================================================== */
.ls-main-stats-bar {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.75rem;
    background: var(--ls-background);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius-xl);
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: var(--ls-shadow-sm);
}

.ls-main-stat {
    text-align: center;
    padding: 0.5rem;
}

.ls-main-stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--ls-primary-color);
    font-variant-numeric: tabular-nums;
}

.ls-main-stat-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--ls-secondary-color);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-top: 0.25rem;
}

/* ==========================================================================
   Secondary Stats Row
   ========================================================================== */
.ls-secondary-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.ls-stat-item {
    background: var(--ls-surface);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius-md);
    padding: 0.875rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ls-stat-item .ls-stat-label {
    font-size: 0.8125rem;
    color: var(--ls-secondary-color);
}

.ls-stat-item .ls-stat-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ls-primary-color);
    font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Section Common Styles
   ========================================================================== */
.ls-section {
    background: var(--ls-background);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius-xl);
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: var(--ls-shadow-sm);
}

.ls-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.ls-section-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    margin: 0;
    color: var(--ls-primary-color);
}

.ls-section-title svg {
    color: var(--ls-secondary-color);
    opacity: 0.7;
}

/* ==========================================================================
   Readability Section
   ========================================================================== */
.ls-readability-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.ls-readability-card {
    background: var(--ls-surface);
    border-radius: var(--ls-radius-md);
    padding: 1rem;
}

.ls-readability-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.625rem;
}

.ls-readability-name {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--ls-secondary-color);
}

.ls-readability-value {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--ls-primary-color);
    font-variant-numeric: tabular-nums;
}

.ls-readability-bar {
    height: 6px;
    background: #e5e7eb;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.625rem;
}

.ls-readability-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.4s ease, background-color 0.3s ease;
    background: var(--ls-secondary-color);
}

.ls-readability-fill.ls-level-easy {
    background: linear-gradient(90deg, #10b981 0%, #34d399 100%);
}

.ls-readability-fill.ls-level-medium {
    background: linear-gradient(90deg, #f59e0b 0%, #fbbf24 100%);
}

.ls-readability-fill.ls-level-hard {
    background: linear-gradient(90deg, #ef4444 0%, #f87171 100%);
}

.ls-readability-level {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 0.25rem 0.5rem;
    border-radius: var(--ls-radius-sm);
    background: var(--ls-surface-hover);
    color: var(--ls-secondary-color);
}

.ls-readability-level.ls-level-easy {
    background: #d1fae5;
    color: #059669;
}

.ls-readability-level.ls-level-medium {
    background: #fef3c7;
    color: #d97706;
}

.ls-readability-level.ls-level-hard {
    background: #fee2e2;
    color: #dc2626;
}

/* ==========================================================================
   Keywords Section
   ========================================================================== */
.ls-keywords-section .ls-section-title {
    margin-bottom: 0;
}

/* N-gram Dropdown */
.ls-ngram-dropdown {
    position: relative;
}

.ls-dropdown-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.75rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--ls-accent-color);
    background: var(--ls-accent-light);
    border: 1px solid transparent;
    border-radius: var(--ls-radius-md);
    cursor: pointer;
    transition: all var(--ls-transition);
}

.ls-dropdown-btn:hover {
    background: #bfdbfe;
}

.ls-dropdown-btn[aria-expanded="true"] {
    background: #bfdbfe;
}

.ls-dropdown-btn svg {
    transition: transform var(--ls-transition);
}

.ls-dropdown-btn[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.ls-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.25rem;
    min-width: 180px;
    background: var(--ls-background);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius-md);
    box-shadow: var(--ls-shadow-lg);
    padding: 0.375rem;
    list-style: none;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--ls-transition);
}

.ls-dropdown-menu.ls-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.ls-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    border-radius: var(--ls-radius-sm);
    cursor: pointer;
    transition: background var(--ls-transition);
}

.ls-dropdown-item:hover {
    background: var(--ls-surface);
}

.ls-dropdown-item.active {
    background: var(--ls-accent-light);
}

.ls-dropdown-value {
    font-weight: 600;
    font-size: 0.8125rem;
    color: var(--ls-accent-color);
    min-width: 24px;
}

.ls-dropdown-desc {
    font-size: 0.8125rem;
    color: var(--ls-secondary-color);
}

/* Keywords List */
.ls-keywords-list {
    max-height: 400px;
    overflow-y: auto;
}

.ls-empty-state {
    color: var(--ls-secondary-color);
    text-align: center;
    padding: 2.5rem 1rem;
    margin: 0;
    font-size: 0.9375rem;
}

.ls-word-item {
    display: grid;
    grid-template-columns: 32px 1fr auto 150px auto;
    gap: 1rem;
    align-items: center;
    padding: 0.625rem 0;
    border-bottom: 1px solid var(--ls-border);
    opacity: 0;
    animation: ls-fadeInUp 0.3s ease forwards;
}

.ls-word-item:last-child {
    border-bottom: none;
}

.ls-word-rank {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ls-surface);
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ls-secondary-color);
}

.ls-word-item:nth-child(1) .ls-word-rank {
    background: var(--ls-accent-light);
    color: var(--ls-accent-color);
}

.ls-word-item:nth-child(2) .ls-word-rank {
    background: #fef3c7;
    color: #d97706;
}

.ls-word-item:nth-child(3) .ls-word-rank {
    background: #fee2e2;
    color: #dc2626;
}

.ls-word-text {
    font-weight: 500;
    color: var(--ls-primary-color);
    font-size: 0.9375rem;
}

.ls-word-count {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ls-secondary-color);
    font-variant-numeric: tabular-nums;
}

.ls-word-bar {
    height: 8px;
    background: var(--ls-surface);
    border-radius: 4px;
    overflow: hidden;
}

.ls-word-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--ls-accent-color) 0%, #60a5fa 100%);
    border-radius: 4px;
    transition: width 0.4s ease;
}

.ls-word-percent {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--ls-secondary-color);
    text-align: right;
    min-width: 48px;
    font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Platform Limits Section
   ========================================================================== */
.ls-platforms-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.ls-platform-item {
    background: var(--ls-surface);
    border-radius: var(--ls-radius-md);
    padding: 0.75rem;
    text-align: center;
}

.ls-platform-name {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--ls-secondary-color);
    margin-bottom: 0.375rem;
}

.ls-platform-bar {
    height: 6px;
    background: #e5e7eb;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.375rem;
}

.ls-platform-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.4s ease, background-color 0.3s ease;
    background: var(--ls-accent-color);
}

.ls-platform-fill.ls-over {
    background: var(--ls-danger-color);
}

.ls-platform-fill.ls-near {
    background: var(--ls-warning-color);
}

.ls-platform-limit {
    display: block;
    font-size: 0.6875rem;
    color: var(--ls-secondary-color);
    font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Animations
   ========================================================================== */
.ls-stat-updated {
    animation: ls-pulse 0.3s ease;
}

@keyframes ls-pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

@keyframes ls-fadeInUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.licznik-slow-container.ls-cleared .ls-main-stat-value,
.licznik-slow-container.ls-cleared .ls-stat-value {
    animation: ls-clearPulse 0.3s ease;
}

@keyframes ls-clearPulse {
    0% { opacity: 1; }
    50% { opacity: 0.3; }
    100% { opacity: 1; }
}