/**
 * Prime Number Calculator — Math Studio page styles
 */
:root {
    --pn-accent: #10b981;
    --pn-accent-dark: #059669;
    --pn-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --pn-light: rgba(16, 185, 129, 0.08);
    --tool-primary: #10b981;
    --tool-primary-dark: #059669;
    --tool-gradient: var(--pn-gradient);
    --tool-light: var(--pn-light);
}
[data-theme="dark"] {
    --pn-light: rgba(16, 185, 129, 0.12);
    --tool-light: rgba(16, 185, 129, 0.12);
}

.ic-hero--compact { padding: 1.1rem 1.25rem 1rem; }
.ic-hero--compact .ic-hero-top { margin-bottom: 0.75rem; align-items: flex-start; }

.pn-hero-badges {
    display: flex; flex-wrap: wrap; gap: 0.35rem;
}
.pn-badge {
    font: 600 0.68rem var(--ms-font-sans, Inter, sans-serif);
    padding: 0.15rem 0.5rem;
    border-radius: var(--ms-radius-pill, 999px);
    background: var(--pn-light);
    color: var(--pn-accent-dark);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.pn-main-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 0.5rem;
    align-items: end;
    margin-bottom: 0.85rem;
}
@media (max-width: 640px) {
    .pn-main-row { grid-template-columns: 1fr; }
    .pn-main-row .pn-btn-row { justify-content: stretch; }
}

.pn-tools-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem 1rem;
}
@media (max-width: 720px) {
    .pn-tools-grid { grid-template-columns: 1fr; }
}

.pn-tool-block {
    padding: 0.65rem 0.75rem;
    background: var(--ms-panel-bg-soft, #faf8f4);
    border: 1px solid var(--ms-line, rgba(0,0,0,0.08));
    border-radius: var(--ms-radius-sm, 8px);
}
.pn-tool-block--wide { grid-column: 1 / -1; }

.pn-label {
    display: block;
    font: 600 0.72rem var(--ms-font-sans, Inter, sans-serif);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--ms-muted, #78716c);
    margin-bottom: 0.35rem;
}
.pn-input {
    width: 100%;
    padding: 0.45rem 0.625rem;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 0.8125rem;
    border: 1.5px solid var(--ms-line-strong, rgba(0,0,0,0.14));
    border-radius: var(--ms-radius-sm, 8px);
    background: var(--ms-panel-bg, #fefdfb);
    color: var(--ms-ink, #1c1917);
    transition: border-color 0.15s, box-shadow 0.15s;
    box-sizing: border-box;
}
.pn-input:focus {
    outline: none;
    border-color: var(--pn-accent);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}
.pn-inline-row {
    display: flex;
    gap: 0.375rem;
    align-items: center;
    margin-top: 0.35rem;
}
.pn-inline-row .pn-input { flex: 1; min-width: 0; }
.pn-range-sep { color: var(--ms-muted); font-size: 0.75rem; }

.pn-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 0.4rem 0.75rem;
    font: 600 0.75rem var(--ms-font-sans, Inter, sans-serif);
    border: none;
    border-radius: var(--ms-radius-sm, 8px);
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
    white-space: nowrap;
}
.pn-btn-primary {
    background: var(--pn-gradient);
    color: #fff;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.25);
}
.pn-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}
.pn-btn-secondary {
    background: var(--ms-panel-bg, #fefdfb);
    color: var(--ms-ink-soft, #44403c);
    border: 1px solid var(--ms-line-strong, rgba(0,0,0,0.14));
}
.pn-btn-secondary:hover {
    border-color: var(--pn-accent);
    color: var(--pn-accent-dark);
}
.pn-btn-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.pn-output {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 0.78rem;
    color: var(--ms-muted, #78716c);
    margin-top: 0.4rem;
    line-height: 1.45;
    min-height: 1.1rem;
}

.pn-hero {
    padding: 1rem 1.25rem;
    border-radius: var(--ms-radius, 14px);
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 1.35rem;
    font-weight: 700;
    color: #6b7280;
    text-align: center;
    letter-spacing: 0.02em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-height: 3.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
}
.pn-hero.prime { color: #22c55e; text-shadow: 0 2px 16px rgba(34, 197, 94, 0.35); }
.pn-hero.composite { color: #f87171; text-shadow: 0 2px 16px rgba(248, 113, 113, 0.3); }
.pn-hero.info { color: #60a5fa; font-size: 1.05rem; text-shadow: 0 2px 12px rgba(96, 165, 250, 0.25); }

.pn-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    max-height: 360px;
    overflow-y: auto;
    padding: 0.15rem 0;
}
.pn-chip {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--pn-light);
    color: var(--pn-accent-dark);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 999px;
}
.pn-chip.twin {
    background: rgba(245, 158, 11, 0.15);
    color: #b45309;
    border-color: rgba(245, 158, 11, 0.35);
}
.pn-chip.twin-dim { opacity: 0.35; }
.pn-overflow { font-size: 0.75rem; color: var(--ms-muted); padding: 0.25rem 0; }

.pn-list-controls {
    padding: 0 0 0.5rem;
    font-size: 0.75rem;
    color: var(--ms-muted);
}
.pn-list-controls label {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    cursor: pointer;
}

.pn-chart-card {
    margin-top: 0.75rem;
    background: var(--ms-panel-bg);
    border: 1px solid var(--ms-line);
    border-radius: var(--ms-radius);
    overflow: hidden;
}
.pn-chart-head {
    padding: 0.55rem 0.85rem;
    font: 600 0.8rem var(--ms-font-sans);
    color: #fff;
}
.pn-chart-head--gap { background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%); }
.pn-chart-head--density { background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%); }
.pn-chart-body { padding: 0.5rem; }
.pn-chart-caption {
    font-size: 0.6875rem;
    color: var(--ms-muted);
    margin: 0.35rem 0 0;
    text-align: center;
}

.pn-algo { font-size: 0.8125rem; color: var(--ms-ink-soft); line-height: 1.6; margin: 0; padding-left: 1.15rem; }
.pn-algo code {
    background: var(--pn-light);
    padding: 1px 5px;
    border-radius: 3px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85em;
}

.ic-hero .math-ai-tab-btn {
    display: inline-flex; align-items: center; gap: 0.35rem;
    padding: 0.35rem 0.75rem; border-radius: 999px;
    border: 1px solid rgba(16, 185, 129, 0.35);
    background: rgba(16, 185, 129, 0.08);
    color: var(--ms-ink, #1c1917);
    font: 600 0.8125rem var(--ms-font-sans);
    cursor: pointer;
    transition: background 0.15s, transform 0.15s;
    white-space: nowrap;
}
.ic-hero .math-ai-tab-btn:hover {
    background: rgba(16, 185, 129, 0.16);
    transform: translateY(-1px);
}