/* ═══════════════════════════════════════════════════════
   INVISIBLE CHARACTER TOOL – Full Stylesheet
   Matches OnlineNotes.io design system
   ═══════════════════════════════════════════════════════ */

/* ─── LOCAL VARIABLES ─────────────────────────────────── */
:root {
    --ic-bg: var(--surface-2);
    --ic-card-bg: var(--surface);
    --ic-card-border: rgba(68, 97, 242, 0.07);
    --ic-card-shadow: 0 1px 4px rgba(68, 97, 242, .06), 0 4px 24px rgba(0, 0, 0, .04);
    --ic-text-main: var(--ink);
    --ic-text-muted: var(--ink-3);
    --ic-text-sub: var(--ink-2);
    --ic-surface-2: var(--surface-2);
    --ic-surface-3: var(--surface-3);
    --ic-divider: var(--surface-3);
    --ic-toolbar-border: rgba(68, 97, 242, 0.07);
    --ic-btn-bg: var(--surface-3);

    /* accent palette */
    --ic-green: #10b981;
    --ic-green-bg: rgba(16, 185, 129, .1);
    --ic-amber: #f59e0b;
    --ic-amber-bg: rgba(245, 158, 11, .1);
    --ic-cyan: #06b6d4;
    --ic-cyan-bg: rgba(6, 182, 212, .1);
    --ic-purple: #7c3aed;
    --ic-purple-bg: rgba(124, 58, 237, .1);
    --ic-rose: #f43f5e;
    --ic-rose-bg: rgba(244, 63, 94, .1);
}

[data-theme="dark"] {
    --ic-bg: #111318;
    --ic-card-bg: #1a1d24;
    --ic-card-border: #252836;
    --ic-card-shadow: 0 4px 28px rgba(0, 0, 0, .35);
    --ic-text-main: #f1f5f9;
    --ic-text-muted: #64748b;
    --ic-text-sub: #94a3b8;
    --ic-surface-2: #141720;
    --ic-surface-3: #1e2130;
    --ic-divider: #252836;
    --ic-toolbar-border: #252836;
    --ic-btn-bg: #1e2130;
    --ic-green-bg: rgba(16, 185, 129, .15);
    --ic-amber-bg: rgba(245, 158, 11, .15);
    --ic-cyan-bg: rgba(6, 182, 212, .13);
    --ic-purple-bg: rgba(124, 58, 237, .18);
    --ic-rose-bg: rgba(244, 63, 94, .15);
}
.tool-card{
    background:white !important;
}
/* ─── PAGE WRAPPER ────────────────────────────────────── */
.ic-page-wrapper {
    background: var(--ic-bg);
    min-height: calc(100vh - 80px);
    padding: 100px 0 80px;
    transition: background .3s ease;
}

/* ─── PAGE HEADER ─────────────────────────────────────── */
.ic-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 36px;
}

.ic-header .tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 18px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    padding: 5px 14px;
    border-radius: 99px;
    background: var(--indigo-light);
    color: var(--indigo);
}

[data-theme="dark"] .ic-header .tag {
    background: rgba(68, 97, 242, .15);
    color: #818cf8;
}

.ic-header h1 {
    font-family: var(--font-display);
    font-size: clamp(28px, 4.5vw, 46px);
    font-weight: 800;
    color: var(--ic-text-main);
    line-height: 1.15;
    letter-spacing: -.025em;
    margin-bottom: 14px;
}

.ic-header h1 span {
    background: var(--grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ic-header p {
    font-size: 16px;
    color: var(--ic-text-muted);
    line-height: 1.7;
    max-width: 560px;
    margin: 0 auto;
}

/* ─── SHARED CARD ─────────────────────────────────────── */
.ic-card {
    background: var(--ic-card-bg);
    border: 1px solid var(--ic-card-border);
    border-radius: 18px;
    box-shadow: var(--ic-card-shadow);
    transition: background .3s, border-color .3s;
}

/* ─── MAIN TOOL CARD ──────────────────────────────────── */
.ic-tool-card {
    margin-bottom: 24px;
    overflow: hidden;
}

/* Tool Card Header */
.ic-tool-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--ic-toolbar-border);
    flex-wrap: wrap;
}

.ic-tool-title-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ic-tool-doc-icon {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    background: var(--grad);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ic-tool-doc-name {
    font-size: 14.5px;
    font-weight: 600;
    color: var(--ic-text-main);
}

.ic-tool-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

/* ─── ACTION BUTTONS ──────────────────────────────────── */
.ic-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: 9px;
    font-size: 13px;
    font-weight: 500;
    color: var(--ic-text-sub);
    background: var(--ic-card-bg);
    border: 1px solid var(--ic-card-border);
    cursor: pointer;
    transition: all .2s var(--ease);
}

.ic-action-btn:hover {
    background: var(--indigo-light);
    color: var(--indigo);
    border-color: rgba(68, 97, 242, .2);
    transform: translateY(-1px);
}

[data-theme="dark"] .ic-action-btn {
    border-color: var(--ic-card-border);
    color: var(--ic-text-sub);
}

[data-theme="dark"] .ic-action-btn:hover {
    background: rgba(68, 97, 242, .15);
    color: #818cf8;
    border-color: rgba(68, 97, 242, .3);
}

.ic-action-btn--danger {
    color: var(--ic-rose) !important;
    background: var(--ic-rose-bg) !important;
    border-color: rgba(244, 63, 94, .15) !important;
}

.ic-action-btn--danger:hover {
    background: var(--ic-rose) !important;
    color: #fff !important;
    border-color: var(--ic-rose) !important;
}

.ic-action-btn--primary {
    background: var(--grad) !important;
    color: #fff !important;
    border-color: transparent !important;
    box-shadow: 0 4px 16px rgba(68, 97, 242, .3);
}

.ic-action-btn--primary:hover {
    box-shadow: 0 6px 22px rgba(68, 97, 242, .45);
    transform: translateY(-2px);
}

.ic-action-divider {
    width: 1px;
    height: 22px;
    background: var(--ic-toolbar-border);
    margin: 0 2px;
}

/* ─── TOOL BODY: 2-COLUMN GRID ────────────────────────── */
.ic-tool-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.ic-method-panel {
    padding: 28px 28px 24px;
}

.ic-method-panel:first-child {
    border-right: 1px solid var(--ic-toolbar-border);
}

.ic-method-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--ic-text-muted);
    margin-bottom: 10px;
}

.ic-method-label-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--grad);
    flex-shrink: 0;
}

.ic-method-title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 8px;
}

.ic-method-desc {
    font-size: 14px;
    color: var(--ic-text-muted);
    line-height: 1.65;
    margin-bottom: 20px;
}

/* ─── CHARACTER TYPE TABS ─────────────────────────────── */
.ic-char-tabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.ic-char-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 13px;
    border-radius: 8px;
    font-size: 12.5px;
    font-weight: 600;
    cursor: pointer;
    border: 1.5px solid var(--ic-card-border);
    background: var(--ic-surface-2);
    color: var(--ic-text-muted);
    transition: all .2s var(--ease);
}

.ic-char-tab:hover {
    border-color: rgba(68, 97, 242, .3);
    color: var(--indigo);
    background: var(--indigo-light);
}

.ic-char-tab.active {
    background: var(--grad);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 3px 12px rgba(68, 97, 242, .3);
}

[data-theme="dark"] .ic-char-tab.active {
    box-shadow: 0 3px 12px rgba(68, 97, 242, .4);
}

/* ─── COPY METHOD 1: SINGLE COPY ─────────────────────── */
.ic-copy-preview-wrap {
    position: relative;
    margin-bottom: 16px;
}

.ic-copy-preview {
    width: 100%;
    height: 52px;
    border: 1.5px dashed rgba(68, 97, 242, .22);
    border-radius: 10px;
    background: var(--ic-surface-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    color: var(--ic-text-muted);
    letter-spacing: .03em;
    transition: border-color .2s, background .2s;
}

.ic-copy-preview.highlight {
    border-color: var(--indigo);
    background: var(--indigo-light);
    animation: icPulse .5s ease;
}

[data-theme="dark"] .ic-copy-preview.highlight {
    background: rgba(68, 97, 242, .12);
}

.ic-copy-preview-hidden {
    /* holds the actual invisible char for selection */
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
    font-size: 20px;
    text-align: center;
    border: none;
    background: transparent;
    resize: none;
    z-index: 1;
    user-select: all;
}

.ic-method1-btns {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.ic-copy-btn {
    flex: 1;
    min-width: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    border: 1.5px solid var(--ic-card-border);
    background: var(--ic-surface-2);
    color: var(--ic-text-sub);
    transition: all .2s var(--ease);
    white-space: nowrap;
}

.ic-copy-btn:hover {
    background: var(--indigo-light);
    color: var(--indigo);
    border-color: rgba(68, 97, 242, .25);
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(68, 97, 242, .12);
}

.ic-copy-btn.ic-copy-btn--primary {
    background: var(--grad);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 16px rgba(68, 97, 242, .3);
}

.ic-copy-btn.ic-copy-btn--primary:hover {
    box-shadow: 0 6px 24px rgba(68, 97, 242, .45);
    transform: translateY(-2px);
}

/* ─── COPY METHOD 2: BULK GENERATOR ──────────────────── */
.ic-generator-wrap {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.ic-count-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ic-count-label {
    font-size: 13.5px;
    color: var(--ic-text-muted);
    flex-shrink: 0;
}

.ic-count-ctrl {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--ic-surface-2);
    border: 1.5px solid var(--ic-card-border);
    border-radius: 10px;
    overflow: hidden;
    padding: 3px;
}

.ic-count-btn {
    width: 30px;
    height: 30px;
    border-radius: 7px;
    border: none;
    background: transparent;
    color: var(--ic-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    transition: all .18s;
}

.ic-count-btn:hover {
    background: var(--indigo-light);
    color: var(--indigo);
}

[data-theme="dark"] .ic-count-btn:hover {
    background: rgba(68, 97, 242, .15);
    color: #818cf8;
}

.ic-count-input {
    width: 60px;
    text-align: center;
    border: none;
    background: transparent;
    color: var(--ic-text-main);
    font-size: 15px;
    font-weight: 700;
    font-family: var(--font-body);
    outline: none;
    -moz-appearance: textfield;
}

.ic-count-input::-webkit-inner-spin-button,
.ic-count-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
}

.ic-gen-output {
    width: 100%;
    min-height: 90px;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1.5px dashed rgba(68, 97, 242, .18);
    background: var(--ic-surface-2);
    color: var(--ic-text-main);
    font-family: var(--font-body);
    font-size: 14px;
    resize: vertical;
    outline: none;
    transition: border-color .2s, background .2s;
    cursor: default;
    user-select: all;
}

.ic-gen-output::placeholder {
    color: var(--ic-text-muted);
    font-style: italic;
}

.ic-gen-output:focus {
    border-color: rgba(68, 97, 242, .35);
}

.ic-gen-row {
    display: flex;
    gap: 8px;
}

.ic-gen-row .ic-copy-btn {
    flex: 1;
}

/* ─── TOOL FOOTER ─────────────────────────────────────── */
.ic-tool-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    border-top: 1px solid var(--ic-toolbar-border);
    font-size: 12.5px;
    color: var(--ic-text-muted);
    flex-wrap: wrap;
    gap: 8px;
}

.ic-tool-status {
    display: flex;
    align-items: center;
    gap: 7px;
}

.ic-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--ic-green);
    box-shadow: 0 0 8px rgba(16, 185, 129, .5);
    animation: icDotPulse 2.5s ease infinite;
}

.ic-char-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ic-char-count-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    border-radius: 99px;
    background: var(--ic-surface-2);
    border: 1px solid var(--ic-card-border);
    font-size: 12px;
    font-weight: 600;
    color: var(--ic-text-sub);
}

/* ─── TEST AREA ───────────────────────────────────────── */
.ic-test-section {
    margin-bottom: 24px;
}

.ic-test-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: 1px solid var(--ic-toolbar-border);
}

.ic-test-title-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ic-test-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--ic-cyan-bg);
    color: var(--ic-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ic-test-title {
    font-size: 14.5px;
    font-weight: 600;
    color: var(--ic-text-main);
}

.ic-test-meta {
    font-size: 12px;
    color: var(--ic-text-muted);
}

.ic-test-body {
    padding: 20px;
}

.ic-test-textarea-wrap {
    position: relative;
}

#ic-test-area {
    width: 100%;
    min-height: 130px;
    padding: 14px 16px;
    border-radius: 12px;
    border: 1.5px solid var(--ic-card-border);
    background: var(--ic-surface-2);
    color: var(--ic-text-main);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.7;
    resize: vertical;
    outline: none;
    transition: border-color .2s;
}

#ic-test-area::placeholder {
    color: var(--ic-text-muted);
    font-style: italic;
}

#ic-test-area:focus {
    border-color: rgba(68, 97, 242, .35);
    box-shadow: 0 0 0 3px rgba(68, 97, 242, .06);
}

.ic-test-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 12px;
    font-size: 12.5px;
    color: var(--ic-text-muted);
    flex-wrap: wrap;
    gap: 8px;
}

.ic-test-char-count {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 99px;
    background: var(--ic-surface-2);
    border: 1px solid var(--ic-card-border);
    font-size: 12px;
    font-weight: 600;
    color: var(--ic-text-sub);
}

.ic-test-char-count .count-val {
    color: var(--indigo);
    font-weight: 700;
}

[data-theme="dark"] .ic-test-char-count .count-val {
    color: #818cf8;
}

.ic-test-paste-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 12.5px;
    font-weight: 500;
    background: var(--ic-card-bg);
    color: var(--ic-text-muted);
    border: 1px solid var(--ic-card-border);
    cursor: pointer;
    transition: all .18s;
}

.ic-test-paste-btn:hover {
    background: var(--indigo-light);
    color: var(--indigo);
    border-color: rgba(68, 97, 242, .2);
}

/* success/fail indicator */
.ic-test-indicator {
    display: none;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 99px;
}

.ic-test-indicator.success {
    display: inline-flex;
    background: var(--ic-green-bg);
    color: var(--ic-green);
    border: 1px solid rgba(16, 185, 129, .2);
}

.ic-test-indicator.fail {
    display: inline-flex;
    background: var(--ic-rose-bg);
    color: var(--ic-rose);
    border: 1px solid rgba(244, 63, 94, .2);
}

/* ─── QUICK-COPY CHARACTER CARDS ──────────────────────── */
.ic-qc-section {
    margin-bottom: 24px;
}

.ic-qc-section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: 1px solid var(--ic-toolbar-border);
}

.ic-qc-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14.5px;
    font-weight: 600;
    color: var(--ic-text-main);
}

.ic-qc-title-icon {
    width: 30px;
    height: 30px;
    border-radius: 7px;
    background: var(--ic-amber-bg);
    color: var(--ic-amber);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ic-qc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 14px;
    padding: 20px;
}

.ic-qc-card {
    background: var(--ic-surface-2);
    border: 1.5px solid var(--ic-card-border);
    border-radius: 14px;
    padding: 18px 16px;
    cursor: pointer;
    transition: all .22s var(--ease);
    text-align: left;
    position: relative;
    overflow: hidden;
}

.ic-qc-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--grad-soft);
    opacity: 0;
    transition: opacity .25s;
}

.ic-qc-card:hover {
    border-color: rgba(68, 97, 242, .3);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.ic-qc-card:hover::before {
    opacity: 1;
}

.ic-qc-card > * {
    position: relative;
    z-index: 1;
}

.ic-qc-char-display {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--ic-card-bg);
    border: 1.5px solid var(--ic-card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    color: var(--ic-text-muted);
    font-family: monospace;
    margin-bottom: 12px;
    letter-spacing: .03em;
    transition: border-color .2s, background .2s;
}

.ic-qc-card:hover .ic-qc-char-display {
    border-color: var(--indigo);
    background: var(--indigo-light);
    color: var(--indigo);
}

.ic-qc-card-name {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 4px;
}

.ic-qc-card-unicode {
    font-size: 11.5px;
    color: var(--ic-text-muted);
    font-family: monospace;
    margin-bottom: 8px;
}

.ic-qc-card-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 99px;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: .04em;
}

.ic-qc-card-badge--works {
    background: var(--ic-green-bg);
    color: var(--ic-green);
}

.ic-qc-card-badge--wide {
    background: var(--ic-purple-bg);
    color: var(--ic-purple);
}

.ic-qc-card-badge--game {
    background: var(--ic-amber-bg);
    color: var(--ic-amber);
}

.ic-qc-copy-indicator {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--ic-green);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(.6);
    transition: all .3s var(--ease);
    z-index: 2;
}

.ic-qc-card.copied .ic-qc-copy-indicator {
    opacity: 1;
    transform: scale(1);
}

/* ─── FEATURES GRID ───────────────────────────────────── */
.ic-features-section {
    margin-bottom: 24px;
}

.ic-features-section-head {
    padding: 20px 20px 0;
    margin-bottom: 20px;
}

.ic-feat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    padding: 0 20px 20px;
}

.ic-feat-card {
    background: var(--ic-surface-2);
    border: 1px solid var(--ic-card-border);
    border-radius: var(--radius-sm);
    padding: 20px 18px;
    transition: all .25s var(--ease);
    position: relative;
    overflow: hidden;
}

.ic-feat-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--grad-soft);
    opacity: 0;
    transition: opacity .25s;
}

.ic-feat-card:hover {
    border-color: rgba(68, 97, 242, .25);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.ic-feat-card:hover::before {
    opacity: 1;
}

.ic-feat-card > * {
    position: relative;
    z-index: 1;
}

.ic-feat-icon {
    width: 42px;
    height: 42px;
    border-radius: 11px;
    background: var(--indigo-light);
    color: var(--indigo);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    transition: background .25s, color .25s;
    flex-shrink: 0;
}

.ic-feat-card:hover .ic-feat-icon {
    background: var(--grad);
    color: #fff;
}

.ic-feat-card h3 {
    font-family: var(--font-display);
    font-size: 14.5px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 6px;
}

.ic-feat-card p {
    font-size: 13.5px;
    color: var(--ic-text-muted);
    line-height: 1.6;
}

/* ─── HOW IT WORKS ────────────────────────────────────── */
.ic-how-section {
    margin-bottom: 24px;
}

.ic-how-head {
    padding: 20px 20px 0;
    margin-bottom: 20px;
    text-align: left;
}

.ic-how-head h2 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 6px;
}

.ic-how-head p {
    font-size: 14px;
    color: var(--ic-text-muted);
    line-height: 1.6;
}

.ic-steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0;
    padding: 0 20px 20px;
    position: relative;
}

.ic-step {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 16px;
    position: relative;
}

.ic-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 30px;
    right: -10%;
    width: 20%;
    height: 2px;
    background: linear-gradient(90deg, var(--indigo) 0%, transparent 100%);
    opacity: .25;
}

.ic-step-num {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--grad);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
    margin-bottom: 12px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(68, 97, 242, .3);
}

.ic-step h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 5px;
}

.ic-step p {
    font-size: 13px;
    color: var(--ic-text-muted);
    line-height: 1.6;
}

/* ─── USE CASES ───────────────────────────────────────── */
.ic-usecases-section {
    margin-bottom: 24px;
}

.ic-usecases-head {
    padding: 20px 20px 0;
    margin-bottom: 20px;
}

.ic-usecases-head h2 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 6px;
}

.ic-usecases-head p {
    font-size: 14px;
    color: var(--ic-text-muted);
}

.ic-usecases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 14px;
    padding: 0 20px 20px;
}

.ic-usecase-card {
    background: var(--ic-surface-2);
    border: 1px solid var(--ic-card-border);
    border-radius: 12px;
    padding: 18px 16px;
    transition: all .22s var(--ease);
}

.ic-usecase-card:hover {
    border-color: rgba(68, 97, 242, .2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.ic-usecase-icon-wrap {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 10px;
}

.ic-usecase-card h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 5px;
}

.ic-usecase-card p {
    font-size: 13px;
    color: var(--ic-text-muted);
    line-height: 1.6;
}

/* ─── FAQ ─────────────────────────────────────────────── */
.ic-faq-section {
    margin-bottom: 24px;
}

.ic-faq-head {
    padding: 20px 20px 0;
    margin-bottom: 20px;
}

.ic-faq-head h2 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 6px;
}

.ic-faq-head p {
    font-size: 14px;
    color: var(--ic-text-muted);
}

.ic-faq-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 0 20px 20px;
}

.ic-faq-item {
    background: var(--ic-surface-2);
    border: 1.5px solid var(--ic-card-border);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color .2s;
}

.ic-faq-item.open {
    border-color: rgba(68, 97, 242, .25);
}

.ic-faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14.5px;
    color: var(--ic-text-main);
    gap: 12px;
    transition: color .18s;
    user-select: none;
}

.ic-faq-q:hover {
    color: var(--indigo);
}

.ic-faq-chevron {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--ic-card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ic-text-muted);
    transition: all .25s var(--ease);
    border: 1px solid var(--ic-card-border);
}

.ic-faq-item.open .ic-faq-chevron {
    background: var(--indigo);
    color: #fff;
    border-color: transparent;
    transform: rotate(180deg);
}

.ic-faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s var(--ease);
}

.ic-faq-a-inner {
    padding: 0 20px 18px;
    font-size: 14px;
    color: var(--ic-text-sub);
    line-height: 1.75;
}

.ic-faq-item.open .ic-faq-a {
    max-height: 300px;
}

/* ─── RELATED TOOLS ───────────────────────────────────── */
.ic-related-section {
    margin-bottom: 24px;
}

.ic-related-head {
    padding: 20px 20px 0;
    margin-bottom: 20px;
}

.ic-related-head h2 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 6px;
}

.ic-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
    padding: 0 20px 20px;
}

.ic-related-card {
    background: var(--ic-surface-2);
    border: 1.5px solid var(--ic-card-border);
    border-radius: 14px;
    padding: 20px 16px;
    text-align: center;
    cursor: pointer;
    transition: all .22s var(--ease);
    display: block;
    text-decoration: none;
}

.ic-related-card:hover {
    background: var(--ic-card-bg);
    border-color: rgba(68, 97, 242, .3);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    color: inherit;
}

.ic-related-icon {
    width: 46px;
    height: 46px;
    border-radius: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin: 0 auto 12px;
}

.ic-related-card h4 {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 4px;
}

.ic-related-card p {
    font-size: 12px;
    color: var(--ic-text-muted);
    line-height: 1.5;
}

/* ─── SEO CONTENT SECTION ─────────────────────────────── */
.ic-seo-section {
    margin-bottom: 24px;
}

.ic-seo-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--ic-divider);
}

.ic-seo-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--grad);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ic-seo-header h2 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin: 0;
}

.ic-seo-body {
    padding: 24px 28px 28px;
}

.ic-seo-body p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--ic-text-sub);
    margin: 0 0 16px;
}

.ic-seo-body p strong {
    color: var(--ic-text-main);
    font-weight: 600;
}

.ic-seo-body h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin: 28px 0 14px;
}

.ic-seo-body ul,
.ic-seo-body ol {
    margin: 0 0 20px;
    padding-left: 22px;
}

.ic-seo-body ul {
    list-style-type: disc;
}

.ic-seo-body ol {
    list-style-type: decimal;
}

.ic-seo-body li {
    font-size: 15px;
    line-height: 1.8;
    color: var(--ic-text-sub);
    margin-bottom: 8px;
}

.ic-seo-body li strong {
    color: var(--ic-text-main);
    font-weight: 600;
}

.ic-seo-table-wrap {
    overflow-x: auto;
    margin: 20px 0;
    border-radius: 12px;
    border: 1px solid var(--ic-card-border);
}

.ic-seo-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}

.ic-seo-table th {
    background: var(--ic-surface-2);
    color: var(--ic-text-muted);
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: .05em;
    text-transform: uppercase;
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--ic-card-border);
}

.ic-seo-table td {
    padding: 11px 16px;
    color: var(--ic-text-sub);
    border-bottom: 1px solid var(--ic-divider);
    vertical-align: top;
}

.ic-seo-table tr:last-child td {
    border-bottom: none;
}

.ic-seo-table tr:hover td {
    background: var(--ic-surface-2);
}

.ic-seo-table .mono {
    font-family: monospace;
    font-size: 12px;
    color: var(--indigo);
    background: var(--indigo-light);
    padding: 2px 7px;
    border-radius: 5px;
}

[data-theme="dark"] .ic-seo-table .mono {
    color: #818cf8;
    background: rgba(68, 97, 242, .15);
}

/* ─── FEATURE BAR ─────────────────────────────────────── */
.ic-feature-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 24px;
    padding: 22px 28px;
}

.ic-feature-main {
    display: flex;
    align-items: center;
    gap: 14px;
    flex: 0 0 auto;
    max-width: 260px;
}

.ic-feature-main-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: var(--grad);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ic-feature-main strong {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 3px;
}

.ic-feature-main span {
    font-size: 12.5px;
    color: var(--ic-text-muted);
    line-height: 1.4;
}

.ic-feature-chips {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    flex: 1;
    justify-content: flex-end;
}

.ic-feature-chip {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ic-chip-icon {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    background: var(--ic-surface-2);
    color: var(--indigo);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 1px solid var(--ic-card-border);
}

.ic-feature-chip strong {
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: var(--ic-text-main);
    margin-bottom: 2px;
}

.ic-feature-chip span {
    font-size: 12px;
    color: var(--ic-text-muted);
}



/* ─── ANIMATIONS ──────────────────────────────────────── */
@keyframes icPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

@keyframes icDotPulse {
    0%, 100% { box-shadow: 0 0 8px rgba(16, 185, 129, .5); }
    50% { box-shadow: 0 0 14px rgba(16, 185, 129, .8); }
}

@keyframes icFadeUp {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ─── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 900px) {
    .ic-tool-body {
        grid-template-columns: 1fr;
    }

    .ic-method-panel:first-child {
        border-right: none;
        border-bottom: 1px solid var(--ic-toolbar-border);
    }

    .ic-steps-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ic-step:not(:last-child)::after {
        display: none;
    }

    .ic-feature-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .ic-feature-chips {
        justify-content: flex-start;
    }

    .ic-qc-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }
}

@media (max-width: 700px) {
    .ic-page-wrapper {
        padding: 88px 0 60px;
    }

    .ic-seo-body {
        padding: 20px;
    }

    .ic-seo-header {
        padding: 16px 20px;
    }

    .ic-seo-body h3 {
        font-size: 16px;
    }

    .ic-seo-body p,
    .ic-seo-body li {
        font-size: 14px;
    }

    .ic-steps-grid {
        grid-template-columns: 1fr;
    }

    .ic-usecases-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ic-related-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 576px) {
    .ic-header h1 {
        font-size: clamp(24px, 7vw, 34px);
    }

    /* .ic-tool-header {
        flex-direction: column;
        align-items: flex-start;
    } */

    .ic-method-panel {
        padding: 20px 16px;
    }

    .ic-method1-btns {
        flex-direction: column;
    }

    .ic-copy-btn {
        min-width: unset;
        flex: unset;
        width: 100%;
    }

    .ic-qc-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ic-feat-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ic-usecases-grid {
        grid-template-columns: 1fr;
    }

    .ic-related-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ic-feature-chips {
        gap: 14px;
    }

    .ic-action-btn .btn-text {
        display: none;
    }

    .ic-faq-q {
        font-size: 13.5px;
    }
}

@media (max-width: 400px) {
    .ic-qc-grid,
    .ic-feat-grid,
    .ic-related-grid {
        grid-template-columns: 1fr;
    }

    .ic-header {
        display: none;
    }
}