:root {
    --colour-bg: #ffffff;
    --colour-bg-secondary: #f8fafc;
    --colour-text: #1e293b;
    --colour-text-muted: #64748b;
    --colour-border: #e2e8f0;
    --colour-card-bg: #ffffff;
    --colour-card-shadow: rgba(0, 0, 0, 0.08);
    --colour-link: #0077c7;
    --colour-link-hover: #015ea1;
    --colour-header-bg: rgba(255, 255, 255, 0.9);
    --colour-footer-bg: #f1f5f9;
    --colour-bg-splash-overlay: rgba(0, 0, 0, 0.6);
    --colour-tour-bg: #ffffff;
    --colour-tour-text: #1e293b;
}

[data-theme="dark"] {
    --colour-bg: #0f172a;
    --colour-bg-secondary: #1e293b;
    --colour-text: #e2e8f0;
    --colour-text-muted: #94a3b8;
    --colour-border: #334155;
    --colour-card-bg: #1e293b;
    --colour-card-shadow: rgba(0, 0, 0, 0.3);
    --colour-link: #38bdf8;
    --colour-link-hover: #7dd3fc;
    --colour-header-bg: rgba(15, 23, 42, 0.9);
    --colour-footer-bg: #1e293b;
    --colour-bg-splash-overlay: rgba(0, 0, 0, 0.75);
    --colour-tour-bg: #1e293b;
    --colour-tour-text: #e2e8f0;
}

/* Global font stack */
body {
    font-family: 'Aptos', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* Shepherd.js theme overrides */
.shepherd-element {
    font-family: 'Aptos', 'Segoe UI', system-ui, -apple-system, sans-serif;
    border-radius: 0.75rem;
    box-shadow: 0 10px 25px var(--colour-card-shadow);
}

.shepherd-content {
    background: var(--colour-tour-bg);
    color: var(--colour-tour-text);
    border-radius: 0.75rem;
    padding: 0;
}

.shepherd-header {
    background: var(--colour-tour-bg);
    padding: 1rem 1.25rem 0.25rem;
    border-radius: 0.75rem 0.75rem 0 0;
}

.shepherd-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--colour-tour-text);
}

.shepherd-text {
    padding: 0.5rem 1.25rem;
    font-size: 0.9rem;
    color: var(--colour-text-muted);
}

.shepherd-footer {
    padding: 0.75rem 1.25rem 1rem;
    border-top: 1px solid var(--colour-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.shepherd-button {
    font-family: 'Aptos', 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 0.85rem;
    padding: 0.4rem 1rem;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: background 0.15s ease;
}

.shepherd-button-primary {
    background: var(--colour-link);
    color: #ffffff;
}

.shepherd-button-primary:hover {
    background: var(--colour-link-hover);
}

.shepherd-button-secondary {
    background: transparent;
    color: var(--colour-text-muted);
    border: 1px solid var(--colour-border);
}

.shepherd-button-secondary:hover {
    background: var(--colour-bg-secondary);
}

.shepherd-cancel-icon {
    color: var(--colour-text-muted);
}

.shepherd-cancel-icon:hover {
    color: var(--colour-text);
}

.shepherd-arrow::before {
    background: var(--colour-tour-bg);
}

/* Tour progress indicator */
.shepherd-progress {
    font-size: 0.75rem;
    color: var(--colour-text-muted);
    display: flex;
    align-items: center;
}