:root {
    --bg-page: var(--hero-bg-start);
    --card-bg: var(--bg-primary);
    --card-border: #dfe6ff;
    --text-primary: #152044;
    --text-secondary: #4c5885;
    --muted: #7b86a8;
    --accent: #3156ff;
    --accent-strong: #243fd3;
    --danger: #d94a4a;
    --focus-ring: rgba(49, 86, 255, 0.35);
    --soft-surface: var(--color-indigo-soft);
    --soft-highlight: #e2e9ff;
    --shadow-soft: 0 14px 36px rgba(15, 32, 74, 0.12);
}

[data-theme="dark"] {
    --bg-page: #0f172a;
    --card-border: #374151;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --muted: #94a3b8;
    --accent: #60a5fa;
    --accent-strong: #3b82f6;
    --danger: #f87171;
}

body.tools-page {
    background: var(--bg-page);
    color: var(--text-secondary);
}

.tool-hero {
    background: linear-gradient(125deg, rgba(49, 86, 255, 0.18), rgba(120, 151, 255, 0.22));
    padding: 4.5rem 0 3.5rem;
}

.tool-hero .tool-hero-content {
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
}

/* .tool-icon-large - using global style */

.tool-title {
    font-size: clamp(2.1rem, 4vw, 2.9rem);
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.tool-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.tool-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.meta-pill {
    background: rgba(49, 86, 255, 0.12);
    color: var(--accent-strong);
    padding: 0.5rem 1.05rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
}

.tool-interface {
    margin: 0;
    padding: 3.5rem 0;
}

.tool-layout {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1.8rem;
}

.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1.25rem;
    box-shadow: var(--shadow-soft);
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.tool-card.info-card {
    background: var(--soft-surface);
    border-style: dashed;
    box-shadow: none;
}

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

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

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

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

.btn {
    border: 0;
    border-radius: 0.85rem;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.8rem 1.35rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px var(--focus-ring);
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
    box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
    transform: translateY(-1px);
    background: var(--accent-strong);
}

.btn-secondary {
    background: var(--soft-surface);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}

.btn-secondary:hover {
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent-strong);
}

.input-grid {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.field-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}

.text-input {
    width: 100%;
    border-radius: 0.85rem;
    border: 1px solid var(--card-border);
    padding: 0.85rem 1rem;
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.text-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--focus-ring);
}

.checkbox-grid {
    display: grid;
    gap: 0.6rem;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.checkbox input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    border-radius: 0.3rem;
    border: 1px solid var(--card-border);
    accent-color: var(--accent);
}

.notification {
    background: rgba(49, 86, 255, 0.12);
    color: var(--text-primary);
    border-radius: 0.85rem;
    padding: 0.85rem 1rem;
    border: 1px solid rgba(49, 86, 255, 0.2);
    font-size: 0.9rem;
}

.notification.error {
    background: rgba(217, 74, 74, 0.12);
    color: var(--danger);
    border-color: rgba(217, 74, 74, 0.28);
}

.notification.success {
    background: rgba(41, 179, 123, 0.12);
    color: var(--text-success);
    border-color: rgba(41, 179, 123, 0.28);
}

.notification.hidden {
    display: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.85rem;
}

.stat-card {
    background: var(--soft-surface);
    border-radius: 1rem;
    padding: 1rem 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    border: 1px solid rgba(49, 86, 255, 0.14);
}

.stat-label {
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
}

.stat-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
}

.tip-list {
    display: grid;
    gap: 0.65rem;
    padding-left: 1.1rem;
    color: var(--text-secondary);
}

.preview-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    background: var(--soft-surface);
    border-radius: 1.1rem;
    border: 1px solid var(--card-border);
    padding: 1.75rem;
}

#barcodeCanvas {
    max-width: 100%;
    height: auto;
    background: var(--bg-primary);
    border-radius: 0.75rem;
    border: 1px solid rgba(49, 86, 255, 0.14);
}

.preview-text {
    font-family: "JetBrains Mono", "Fira Code", "SFMono-Regular", Consolas, monospace;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.4rem;
}

.info-block {
    background: var(--bg-primary);
    border-radius: 1rem;
    border: 1px solid rgba(49, 86, 255, 0.14);
    padding: 1.35rem;
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    color: var(--text-secondary);
}

.helper-text {
    font-size: 0.9rem;
    color: var(--muted);
}

.hidden {
    display: none !important;
}

.span-12 {
    grid-column: span 12;
}

.span-7 {
    grid-column: span 7;
}

.span-5 {
    grid-column: span 5;
}

@media (max-width: 1100px) {
    .span-7,
    .span-5 {
        grid-column: span 12;
    }
}

@media (max-width: 768px) {
    .tool-card {
        padding: 1.4rem;
    }

    .btn {
        width: 100%;
    }

    .field-row {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    }

    .preview-wrapper {
        padding: 1.4rem;
    }
}

/* 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);
}

/* Notification dark mode */
[data-theme="dark"] .notification.success {
    background: rgba(34, 197, 94, 0.2);
    border-color: rgba(34, 197, 94, 0.4);
    color: #4ade80;
}

[data-theme="dark"] .notification.warn {
    background: rgba(251, 191, 36, 0.2);
    border-color: rgba(251, 191, 36, 0.4);
    color: #fbbf24;
}

[data-theme="dark"] .notification.error {
    background: rgba(248, 113, 113, 0.2);
    border-color: rgba(248, 113, 113, 0.4);
    color: #f87171;
}

[data-theme="dark"] .notification.info {
    background: rgba(96, 165, 250, 0.2);
    border-color: rgba(96, 165, 250, 0.4);
    color: #60a5fa;
}