/* =============================================
   WORD COUNTER — MODERN UI v2
   Glassmorphism + Responsive + Micro-animations
   ============================================= */

/* ─── CSS Variables (extend design system) ─── */
.wc-main-card {
    --wc-accent-green: #10b981;
    --wc-accent-amber: #f59e0b;
    --wc-accent-red: #ef4444;
    --wc-accent-green-bg: rgba(16,185,129,0.1);
    --wc-accent-red-bg: rgba(239,68,68,0.1);
}

/* ─── Toolbar ─── */
.wc-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-top: 1rem;
    margin-bottom: 0.75rem;
}
.wc-toolbar-left,
.wc-toolbar-right {
    display: flex;
    gap: 0.375rem;
    align-items: center;
}
.wc-tb-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.875rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.18s ease;
    white-space: nowrap;
    line-height: 1;
}
.wc-tb-btn:hover {
    border-color: var(--accent);
    background: var(--accent-light);
    color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px var(--accent-glow);
}
.wc-tb-btn:active {
    transform: translateY(0);
}
.wc-tb-btn-icon {
    padding: 0.5rem;
}
.wc-tb-btn-danger:hover {
    border-color: var(--wc-accent-red);
    background: var(--wc-accent-red-bg);
    color: var(--wc-accent-red);
    box-shadow: 0 2px 8px rgba(239,68,68,0.2);
}

/* ─── Textarea ─── */
.wc-input-section {
    margin-bottom: 1rem;
}
.wc-textarea-wrap {
    position: relative;
}
.wc-textarea-wrap textarea {
    width: 100%;
    min-height: 200px;
    padding: 1rem;
    padding-bottom: 2.75rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
    color: var(--text);
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    font-size: 0.92rem;
    line-height: 1.7;
    resize: vertical;
    transition: border-color 0.2s, box-shadow 0.2s;
    display: block;
}
.wc-textarea-wrap textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.wc-textarea-wrap textarea.error {
    border-color: var(--wc-accent-red);
    box-shadow: 0 0 0 3px rgba(239,68,68,0.15);
}
.wc-textarea-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 1rem;
    font-size: 0.72rem;
    color: var(--text-tertiary);
    pointer-events: none;
    user-select: none;
}
.wc-keyboard-hint {
    opacity: 0.65;
    font-size: 0.7rem;
}
.wc-keyboard-hint kbd {
    display: inline-block;
    padding: 1px 5px;
    border: 1px solid var(--border);
    border-radius: 3px;
    font-family: var(--font);
    font-size: 0.65rem;
    background: var(--bg-glass);
    line-height: 1.4;
}
.error-message {
    color: var(--wc-accent-red);
    font-size: 0.8rem;
    display: none;
    margin-top: 0.35rem;
    font-weight: 500;
}

/* ─── Tabs ─── */
.wc-tabs-wrap {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    position: relative;
    border-bottom: 1px solid var(--border);
}
.wc-tabs {
    display: flex;
    gap: 0.125rem;
    overflow-x: auto;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    flex: 1;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.wc-tabs::-webkit-scrollbar {
    display: none;
}
.wc-tabs-scroll {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 36px;
    flex-shrink: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
    z-index: 1;
    margin-bottom: -1px;
}
.wc-tabs-scroll:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-light);
}
.wc-tabs-scroll-left {
    margin-right: 2px;
}
.wc-tabs-scroll-right {
    margin-left: 2px;
}
.wc-tab {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.625rem 1rem;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.18s;
    white-space: nowrap;
    flex-shrink: 0;
    margin-bottom: -1px;
    position: relative;
}
.wc-tab:hover {
    color: var(--text);
    background: var(--accent-light);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
.wc-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    font-weight: 600;
}
.wc-tab-content {
    display: none;
    animation: wcFadeIn 0.25s ease;
}
.wc-tab-content.active {
    display: block;
}
@keyframes wcFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ─── Stats Grid ─── */
.wc-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.625rem;
}
.wc-stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 0.625rem;
    text-align: center;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}
.wc-stat-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: var(--accent);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}
.wc-stat-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    transform: translateY(-2px);
}
.wc-stat-card.wc-stat-pulse::after {
    animation: wcStatPulse 0.6s ease-out;
}
@keyframes wcStatPulse {
    0% { opacity: 0.12; }
    100% { opacity: 0; }
}
.wc-stat-highlight {
    border-color: var(--accent);
    background: linear-gradient(135deg, var(--accent-light), transparent 70%);
}
.wc-stat-highlight:hover {
    border-color: var(--accent);
    background: linear-gradient(135deg, rgba(255,107,74,0.15), transparent 70%);
}
.wc-stat-icon {
    font-size: 1.4rem;
    margin-bottom: 0.3rem;
    position: relative;
    z-index: 1;
}
.wc-stat-value {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.2;
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
    transition: color 0.2s;
}
.wc-stat-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

/* ─── Details Grid ─── */
.wc-details-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.625rem;
}
.wc-detail-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    transition: border-color 0.2s;
}
.wc-detail-item:hover {
    border-color: var(--accent);
}
.wc-detail-label {
    font-size: 0.72rem;
    color: var(--text-secondary);
    font-weight: 500;
}
.wc-detail-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    word-break: break-all;
    transition: color 0.2s;
}
.wc-detail-word {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
}

/* ─── Keywords ─── */
.wc-keywords-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.wc-keyword-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.8rem;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.18s;
    cursor: default;
}
.wc-keyword-tag:hover {
    background: var(--accent);
    color: #fff;
    transform: scale(1.05);
    box-shadow: 0 2px 10px var(--accent-glow);
}
.wc-keyword-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.4rem;
    height: 1.3rem;
    padding: 0 0.35rem;
    background: var(--accent);
    color: #fff;
    border-radius: 100px;
    font-size: 0.65rem;
    font-weight: 700;
    transition: background 0.18s;
}
.wc-keyword-tag:hover .wc-keyword-count {
    background: rgba(255,255,255,0.25);
}

/* ─── Readability ─── */
.wc-readability-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}
.wc-readability-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1rem;
    text-align: center;
    transition: all 0.2s;
}
.wc-readability-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    border-color: var(--accent);
}
.wc-readability-name {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.3rem;
}
.wc-readability-score {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--accent);
}
.wc-readability-level {
    font-size: 0.73rem;
    color: var(--text-tertiary);
    margin-top: 0.15rem;
}
.wc-readability-bar {
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    margin-top: 0.6rem;
    overflow: hidden;
}
.wc-readability-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.4s ease;
}

/* ─── Limits ─── */
.wc-limits-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-bottom: 1rem;
}
.wc-limit-field label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.3rem;
}
.wc-limit-field input[type="number"] {
    width: 100%;
    padding: 0.65rem 0.8rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text);
    font-size: 0.9rem;
    font-family: var(--font);
    transition: border-color 0.2s;
}
.wc-limit-field input[type="number"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.wc-limit-bar-wrap {
    margin-bottom: 0.7rem;
}
.wc-limit-bar-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}
.wc-limit-bar-track {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}
.wc-limit-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.45s ease;
    min-width: 2px;
}
.wc-limit-bar-fill.ok { background: var(--wc-accent-green); }
.wc-limit-bar-fill.warn { background: var(--wc-accent-amber); }
.wc-limit-bar-fill.over { background: var(--wc-accent-red); }
.wc-limit-status {
    font-size: 0.88rem;
    font-weight: 600;
    text-align: center;
    padding: 0.65rem;
    border-radius: var(--radius-sm);
}
.wc-limit-status.pass {
    color: var(--wc-accent-green);
    background: var(--wc-accent-green-bg);
}
.wc-limit-status.fail {
    color: var(--wc-accent-red);
    background: var(--wc-accent-red-bg);
}

/* ─── No Data ─── */
.wc-no-data {
    text-align: center;
    padding: 2rem;
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

/* ─── Find/Replace ─── */
.wc-findbar {
    margin-bottom: 0.75rem;
    padding: 0.8rem;
    background: var(--bg-card);
    border: 2px solid var(--accent);
    border-radius: var(--radius);
    animation: wcFadeIn 0.2s ease;
}
.wc-find-row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}
.wc-find-input-group {
    flex: 1;
    min-width: 140px;
    position: relative;
    display: flex;
    align-items: center;
}
.wc-find-input-icon {
    position: absolute;
    left: 0.65rem;
    color: var(--text-tertiary);
    pointer-events: none;
    flex-shrink: 0;
}
.wc-find-input-group input {
    width: 100%;
    padding: 0.5rem 0.75rem 0.5rem 1.8rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
    font-size: 0.85rem;
    font-family: var(--font);
    transition: border-color 0.2s;
}
.wc-find-input-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-glow);
}
.wc-find-count {
    position: absolute;
    right: 0.5rem;
    font-size: 0.65rem;
    color: var(--text-tertiary);
    pointer-events: none;
}
.wc-find-actions {
    display: flex;
    gap: 0.2rem;
    align-items: center;
}
.wc-find-replace-actions {
    gap: 0.35rem;
}
.wc-find-match-info {
    font-size: 0.7rem;
    color: var(--text-secondary);
    min-width: 2rem;
    text-align: center;
    font-weight: 600;
    user-select: none;
}
.wc-find-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.45rem 0.65rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.75rem;
    font-family: var(--font);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s;
    height: 2.1rem;
    font-weight: 500;
}
.wc-find-btn:hover {
    border-color: var(--accent);
    background: var(--accent-light);
    color: var(--accent);
}
.wc-find-nav {
    padding: 0.4rem 0.55rem;
}
.wc-find-btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.wc-find-btn-primary:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    filter: brightness(1.12);
    box-shadow: 0 2px 8px var(--accent-glow);
}
.wc-find-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.3rem;
    border-radius: var(--radius-sm);
    transition: all 0.15s;
    flex-shrink: 0;
}
.wc-find-close:hover {
    color: var(--wc-accent-red);
    background: var(--wc-accent-red-bg);
}
.wc-find-info {
    font-size: 0.72rem;
    color: var(--text-secondary);
    margin-top: 0.4rem;
    min-height: 1rem;
}

/* ─── Toast ─── */
.wc-toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(1rem);
    background: var(--accent);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 9999;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.16,1,0.3,1);
    pointer-events: none;
    box-shadow: 0 8px 32px var(--accent-glow);
    white-space: nowrap;
}
.wc-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* =============================================
   RESPONSIVE BREAKPOINTS
   ============================================= */

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
    .wc-stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .wc-details-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .wc-readability-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Small Tablet / Large Phone (640px - 767px) */
@media (max-width: 767px) {
    .calc-card.wc-main-card {
        padding: 20px;
    }
    .wc-toolbar {
        flex-direction: column;
        gap: 0.5rem;
        align-items: stretch;
    }
    .wc-toolbar-left,
    .wc-toolbar-right {
        justify-content: center;
        flex-wrap: wrap;
    }
    .wc-tb-btn {
        font-size: 0.78rem;
        padding: 0.45rem 0.7rem;
    }
    .wc-tb-btn-icon {
        padding: 0.45rem;
    }
    .wc-tb-label {
        display: inline;
    }
    .wc-textarea-wrap textarea {
        min-height: 160px;
        font-size: 0.88rem;
        padding: 0.85rem;
        padding-bottom: 2.5rem;
    }
    .wc-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    .wc-stat-card {
        padding: 0.75rem 0.5rem;
    }
    .wc-stat-value {
        font-size: 1.35rem;
    }
    .wc-details-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    .wc-detail-item {
        padding: 0.65rem;
    }
    .wc-readability-grid {
        grid-template-columns: 1fr;
        gap: 0.6rem;
    }
    .wc-limits-inputs {
        grid-template-columns: 1fr;
        gap: 0.6rem;
    }
    /* Find bar: stack inputs vertically */
    .wc-findbar {
        padding: 0.65rem;
    }
    .wc-find-row {
        gap: 0.4rem;
    }
    .wc-find-input-group {
        min-width: 100%;
    }
    .wc-find-actions {
        width: auto;
    }
    .wc-find-replace-actions {
        flex: 1;
    }
    .wc-find-replace-actions .wc-find-btn {
        flex: 1;
    }
    .wc-keyboard-hint {
        display: none;
    }
    .wc-tab span {
        display: inline;
    }
    /* Tabs: smaller on mobile */
    .wc-tab {
        padding: 0.55rem 0.75rem;
        font-size: 0.76rem;
        gap: 0.25rem;
    }
    .wc-tab svg {
        width: 14px;
        height: 14px;
    }
    /* Make toast smaller on mobile */
    .wc-toast {
        bottom: 5rem;
        padding: 0.6rem 1.2rem;
        font-size: 0.8rem;
    }
}

/* Small Phone (480px and below) */
@media (max-width: 480px) {
    .calc-card.wc-main-card {
        padding: 16px;
    }
    .wc-tb-btn {
        font-size: 0.75rem;
        padding: 0.4rem 0.6rem;
        gap: 0.25rem;
    }
    .wc-tb-btn-icon {
        padding: 0.4rem;
    }
    .wc-textarea-wrap textarea {
        min-height: 140px;
        font-size: 0.84rem;
        padding: 0.7rem;
        padding-bottom: 2.25rem;
    }
    .wc-stat-card {
        padding: 0.65rem 0.4rem;
    }
    .wc-stat-icon {
        font-size: 1.2rem;
        margin-bottom: 0.15rem;
    }
    .wc-stat-value {
        font-size: 1.2rem;
    }
    .wc-stat-label {
        font-size: 0.65rem;
    }
    .wc-stats-grid {
        gap: 0.4rem;
    }
    .wc-detail-item {
        padding: 0.55rem;
    }
    .wc-detail-label {
        font-size: 0.68rem;
    }
    .wc-detail-value {
        font-size: 0.9rem;
    }
    .wc-tab {
        padding: 0.5rem 0.65rem;
        font-size: 0.72rem;
    }
    .wc-tab span {
        display: none;
    }
    .wc-tab svg {
        width: 15px;
        height: 15px;
    }
    .wc-keyword-tag {
        padding: 0.3rem 0.6rem;
        font-size: 0.73rem;
    }
    .wc-readability-card {
        padding: 0.75rem;
    }
    .wc-readability-score {
        font-size: 1.2rem;
    }
}

/* Extra Small (380px and below) */
@media (max-width: 380px) {
    .wc-stats-grid {
        gap: 0.3rem;
    }
    .wc-stat-card {
        padding: 0.55rem 0.3rem;
    }
    .wc-stat-value {
        font-size: 1.1rem;
    }
    .wc-stat-icon {
        font-size: 1.1rem;
    }
    .wc-tabs-scroll {
        width: 24px;
        height: 30px;
    }
}