:root {
    --status-info: var(--ring-color);
    --status-success: rgba(34, 197, 94, 0.16);
    --status-error: rgba(248, 113, 113, 0.16);
}
/* Dark mode overrides */
[data-theme="dark"] {
    --tool-bg: #0f172a;
    --tool-border: #334155;
    --tool-border-hover: #475569;
    --tool-text: #f8fafc;
    --tool-text-secondary: #94a3b8;
    --tool-input-bg: #1e293b;
    --tool-input-border: #334155;
    --tool-button-bg: #1e293b;
    --tool-button-hover: #334155;
    --tool-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
    --tool-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --surface-color: #1e293b;
    --surface-hover: #334155;
    --background-color: #0f172a;
    --text-color: #f8fafc;
    --status-info: rgba(96, 165, 250, 0.2);
    --status-success: rgba(34, 197, 94, 0.2);
    --status-error: rgba(248, 113, 113, 0.2);
    --bg-color: #0f172a;
}

/* Dark mode element overrides */
[data-theme="dark"] .tool-card {
    background: var(--bg-card, #1e293b);
    border-color: var(--border-color, #334155);
}

[data-theme="dark"] .tool-hero {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background: var(--input-bg, #1e293b);
    color: var(--text-primary, #f8fafc);
    border-color: var(--border-color, #334155);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
    color: var(--text-muted, #64748b);
}

[data-theme="dark"] .tab-btn.active {
    color: white;
}

[data-theme="dark"] label {
    color: var(--text-primary, #f8fafc);
}

[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3,
[data-theme="dark"] h4, [data-theme="dark"] h5, [data-theme="dark"] h6 {
    color: var(--text-primary, #f8fafc);
}

[data-theme="dark"] p {
    color: var(--text-secondary, #cbd5e1);
}


.tools-page {
    background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.12), transparent 55%),
        linear-gradient(135deg, var(--bg-primary), var(--color-indigo-soft));
}

.tool-hero {
    padding: 4rem 0 2rem;
    text-align: left;
}

.tool-interface {
    padding: 1.5rem 0 4rem;
}

.tool-layout {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1.5rem;
}

.tool-card {
    background: var(--bg-card);
    border-radius: 1.25rem;
    padding: 1.75rem;
    box-shadow: 0 24px 48px rgba(15, 23, 42, 0.08);
    -webkit-backdrop-filter: blur(22px);
    backdrop-filter: blur(22px);
    position: relative;
    overflow: hidden;
}

.tool-card::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(148, 163, 184, 0.18);
    pointer-events: none;
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-12 { grid-column: span 12; }

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.section-header h2 {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
}

.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.control-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.field span {
    font-weight: 600;
    color: var(--text-primary);
}

.checkbox-row {
    flex-direction: row;
    align-items: center;
    gap: 0.65rem;
    font-weight: 600;
}

.checkbox-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border-radius: 6px;
    border: 1px solid rgba(148, 163, 184, 0.5);
}

.text-input {
    background: var(--bg-card);
    border: 1px solid rgba(148, 163, 184, 0.4);
    border-radius: 0.9rem;
    padding: 0.75rem 0.95rem;
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.text-input:focus {
    outline: none;
    border-color: rgba(59, 130, 246, 0.6);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
}

.btn {
    border-radius: 999px;
    padding: 0.65rem 1.3rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--color-indigo));
    color: var(--bg-primary);
    box-shadow: 0 16px 32px rgba(37, 99, 235, 0.25);
}

.btn-secondary {
    background: rgba(15, 23, 42, 0.85);
    color: var(--bg-secondary);
}

.btn-outline {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid rgba(148, 163, 184, 0.5);
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.25rem;
}

.status {
    margin-top: 1.25rem;
    padding: 0.85rem 1rem;
    border-radius: 1rem;
    background: var(--status-info);
    color: var(--primary-hover);
    font-weight: 600;
    min-height: 44px;
    display: none;
}

.status.show {
    display: block;
}

.status.success {
    background: var(--status-success);
    color: var(--text-success);
}

.status.error {
    background: var(--status-error);
    color: var(--text-danger);
}

.result-display {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.total {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 800;
    color: var(--primary-hover);
}

.result-meta .label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.dice-breakdown {
    background: rgba(59, 130, 246, 0.08);
    border-radius: 1rem;
    padding: 0.9rem 1rem;
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--text-primary);
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 0.92rem;
    line-height: 1.5;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.summary-item {
    background: var(--bg-glass);
    border-radius: 1rem;
    border: 1px solid rgba(148, 163, 184, 0.25);
    padding: 0.75rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.summary-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.summary-value {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.history-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.75rem;
    max-height: 280px;
    overflow-y: auto;
}

.history-list li {
    background: var(--bg-card);
    border-radius: 1rem;
    border: 1px solid rgba(148, 163, 184, 0.22);
    padding: 0.75rem 1rem;
    display: grid;
    gap: 0.2rem;
}

.history-list .meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.history-list .expression {
    font-family: "JetBrains Mono", "Fira Code", monospace;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.history-list .detail {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: "JetBrains Mono", "Fira Code", monospace;
}

.history-list .placeholder {
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
}

.info-card {
    background: rgba(37, 99, 235, 0.08);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
}

.insight-block {
    background: var(--bg-glass);
    border-radius: 1rem;
    border: 1px solid var(--ring-color);
    padding: 1.25rem;
}

.insight-block h3 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    color: var(--primary-hover);
}

.insight-block p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.55;
}

@media (max-width: 1100px) {
    .span-5, .span-4, .span-3 {
        grid-column: span 6;
    }

    .control-grid {
        grid-template-columns: repeat(1, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .tool-hero {
        text-align: center;
        padding-bottom: 1rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .toolbar {
        width: 100%;
        justify-content: flex-start;
    }

    .button-row {
        flex-direction: column;
        align-items: stretch;
    }

    .history-list {
        max-height: none;
    }

    .tool-card {
        padding: 1.5rem;
    }

    .span-5, .span-4, .span-3, .span-12 {
        grid-column: span 12;
    }
}