/* =========================================
   QR CODE GENERATOR & SCANNER TOOL CSS
   ========================================= */

:root { --tool-accent-tint: #eef2ff; --mono-font: 'JetBrains Mono', 'Courier New', monospace; }
[data-theme="dark"] { --tool-accent-tint: #1e1b4b; }

.tool-hero {
    padding: 4rem 0 3rem;
    background: radial-gradient(circle at center, var(--bg-light) 0%, var(--bg-main) 100%);
    border-bottom: 1px solid var(--border-color);
}
.category-badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.35rem 1rem; border-radius: 50px; font-size: 0.85rem; font-weight: 700;
    color: #fff; margin-bottom: 1.5rem; text-transform: uppercase; letter-spacing: 0.5px;
}

.tool-interface-wrapper { padding: 2rem 0 4rem; background-color: var(--bg-main); }
.tool-container { max-width: 1100px; margin: 0 auto; }

/* Mode toggle (top-level generate/scan) */
.mode-toggle {
    display: flex; max-width: 420px; margin: 0 auto 2rem; background: var(--bg-light);
    border-radius: 10px; padding: 4px;
}
.mode-btn {
    flex: 1; background: transparent; border: none; padding: 0.65rem;
    font-size: 0.9rem; font-weight: 600; color: var(--text-muted); border-radius: 8px;
    cursor: pointer; transition: all 0.2s ease;
}
.mode-btn.active { background: var(--bg-main); color: var(--cat-encode); box-shadow: 0 1px 3px var(--card-shadow); }

.qr-panel { display: none; }
.qr-panel.active { display: block; }

.qr-card {
    background: var(--bg-main); border: 1px solid var(--border-color); border-radius: 16px;
    padding: 1.5rem; height: 100%; box-shadow: 0 4px 6px -1px var(--card-shadow);
}
.qr-card h4 { margin-top: 0; margin-bottom: 1rem; font-size: 1.05rem; }

/* Type chips */
.type-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.25rem; }
.type-chip {
    background: var(--bg-light); border: 2px solid var(--border-color); color: var(--text-muted);
    border-radius: 50px; padding: 0.4rem 0.9rem; font-size: 0.82rem; font-weight: 600;
    cursor: pointer; transition: all 0.15s ease;
}
.type-chip.active { border-color: var(--cat-encode); background: var(--tool-accent-tint); color: var(--cat-encode); }

.field-group label {
    display: block; font-size: 0.85rem; font-weight: 600; color: var(--text-main);
    margin-bottom: 0.5rem; margin-top: 1rem;
}
.field-group label:first-child { margin-top: 0; }
.form-control {
    width: 100%; padding: 0.6rem 0.75rem; border: 1px solid var(--border-color); border-radius: 8px;
    background-color: var(--bg-main); color: var(--text-main); font-family: inherit; font-size: 0.9rem;
    outline: none; transition: border-color var(--transition-speed);
}
.form-control:focus { border-color: var(--cat-encode); }
.color-picker { padding: 0.2rem; height: 40px; cursor: pointer; }

.qr-settings label {
    display: block; font-size: 0.85rem; font-weight: 600; color: var(--text-main);
    margin-bottom: 0.5rem; margin-top: 1rem;
}
.form-range { width: 100%; accent-color: var(--cat-encode); }

/* Preview */
.qr-preview-card { display: flex; flex-direction: column; align-items: center; }
.qr-canvas-wrapper {
    background: #fff; border-radius: 12px; padding: 1.25rem; display: inline-flex;
    align-items: center; justify-content: center; margin: 0.5rem 0 1.5rem; border: 1px solid var(--border-color);
}
#qr-canvas { max-width: 100%; height: auto; display: block; }
.qr-download-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; justify-content: center; }

.btn-primary-tool {
    background: var(--cat-encode); color: #fff; border: none; cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    padding: 0.75rem 1.5rem; border-radius: 8px; font-weight: 600; transition: all var(--transition-speed);
}
.btn-primary-tool:hover { background: #4f46e5; }
.btn-outline {
    background: transparent; border: 1px solid var(--border-color); color: var(--text-main);
    cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
    gap: 0.5rem; padding: 0.75rem 1.5rem; border-radius: 8px; font-weight: 600;
    transition: all var(--transition-speed);
}
.btn-outline:hover { background: var(--bg-light); border-color: var(--cat-encode); color: var(--cat-encode); }

.btn-chip {
    background: var(--bg-light); border: 1px solid var(--border-color); color: var(--text-main);
    font-size: 0.78rem; font-weight: 600; padding: 0.4rem 0.85rem; border-radius: 50px;
    cursor: pointer; transition: all 0.15s ease;
}
.btn-chip:hover { border-color: var(--cat-encode); color: var(--cat-encode); }
.btn-chip:disabled { opacity: 0.5; cursor: not-allowed; }

/* Scan panel */
.drop-zone {
    border: 2px dashed var(--border-color); border-radius: 14px; padding: 2.5rem 1.5rem;
    text-align: center; background: var(--bg-light); transition: all var(--transition-speed); cursor: pointer;
}
.drop-zone.dragover { background: var(--tool-accent-tint); border-color: var(--cat-encode); }
.drop-icon {
    width: 64px; height: 64px; margin: 0 auto 1rem; background: var(--tool-accent-tint);
    border-radius: 50%; display: flex; align-items: center; justify-content: center; pointer-events: none;
}
.drop-zone h3, .drop-zone p { pointer-events: none; }
.drop-zone h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.3rem; }
.drop-zone p { color: var(--text-muted); margin-bottom: 1.25rem; font-size: 0.85rem; }

.camera-preview-wrapper {
    position: relative; border-radius: 12px; overflow: hidden; background: #000;
    aspect-ratio: 4 / 3; max-height: 320px;
}
#camera-video { width: 100%; height: 100%; object-fit: cover; display: block; }

.scan-result-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.scan-result-header h4 { margin: 0; }
.scan-result-box {
    background: var(--bg-light); border: 1px solid var(--border-color); border-radius: 10px;
    padding: 1.25rem; min-height: 120px; font-family: var(--mono-font); font-size: 0.9rem;
    color: var(--text-main); word-break: break-word; white-space: pre-wrap;
}
.results-empty { color: var(--text-muted); text-align: center; margin: 0; font-family: var(--font-family); font-size: 0.9rem; }

.scan-history-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; }
.scan-history-header h5 { margin: 0; font-size: 0.95rem; }
.scan-history-list { display: flex; flex-direction: column; gap: 0.5rem; max-height: 200px; overflow-y: auto; }
.scan-history-item {
    background: var(--bg-light); border: 1px solid var(--border-color); border-radius: 8px;
    padding: 0.6rem 0.75rem; font-size: 0.78rem; font-family: var(--mono-font); color: var(--text-main);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: pointer;
}
.scan-history-item:hover { border-color: var(--cat-encode); }

.step-card { padding: 2rem 1rem; }
.step-icon {
    width: 64px; height: 64px; margin: 0 auto 1.5rem; background: var(--tool-accent-tint);
    color: var(--cat-encode); border-radius: 50%; display: flex; align-items: center; justify-content: center;
}
.feature-card { background: var(--bg-main); border: 1px solid var(--border-color); border-radius: 12px; padding: 1.5rem; height: 100%; }

.faq-accordion { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 1rem; }
.accordion-item { background: var(--bg-main); border: 1px solid var(--border-color); border-radius: 8px; overflow: hidden; }
.accordion-header {
    width: 100%; text-align: left; padding: 1.25rem; background: none; border: none;
    font-size: 1.05rem; font-weight: 600; color: var(--text-main); cursor: pointer;
    display: flex; justify-content: space-between; align-items: center; font-family: var(--font-family);
}
.accordion-header svg { transition: transform 0.3s ease; }
.accordion-header[aria-expanded="true"] svg { transform: rotate(180deg); }
.accordion-content {
    max-height: 0;
    overflow: hidden;
    padding: 0 1.25rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    transition: max-height 0.35s ease, padding 0.35s ease;
}

.accordion-content.open {
    max-height: 600px;
    padding: 0 1.25rem 1.25rem;
}
@media (max-width: 991px) {
    .qr-preview-card { margin-top: 1.5rem; }
}