/* ==========================================================================
   Reusable components: buttons, pills & helpers
   ========================================================================== */

:root {
    /* Button design tokens */
    --vp-radius-pill: 999px;
    --vp-btn-font-size: 0.9rem;
    --vp-btn-padding-y: 0.7rem;
    --vp-btn-padding-x: 1.4rem;

    --vp-color-primary-amber: #fbbf24;
    --vp-color-primary-orange: #f97316;
    --vp-color-btn-text-dark: #111827;
    --vp-color-btn-border-muted: rgba(148, 163, 184, 0.6);
}

/* Base button
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: var(--vp-btn-padding-y) var(--vp-btn-padding-x);
    border-radius: var(--vp-radius-pill);
    border: 1px solid transparent;
    font-size: var(--vp-btn-font-size);
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition:
        border-color 0.18s ease-out,
        background 0.18s ease-out,
        color 0.18s ease-out,
        transform 0.18s ease-out,
        box-shadow 0.18s ease-out;
    cursor: pointer;
    white-space: nowrap;
    background: transparent;
    color: inherit;
    text-decoration: none;
}

/* Disabled state */
.btn:disabled,
.btn[disabled] {
    opacity: 0.55;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

/* Focus state (keyboard) */
.btn:focus-visible {
    outline: 2px solid rgba(251, 191, 36, 0.85);
    outline-offset: 2px;
}

/* Primary button
   -------------------------------------------------------------------------- */
.btn-primary {
    background: radial-gradient(
        circle at top left,
        var(--vp-color-primary-amber),
        var(--vp-color-primary-orange)
    );
    border-color: rgba(251, 191, 36, 0.8);
    color: var(--vp-color-btn-text-dark);
    box-shadow:
        0 0 0 1px rgba(251, 191, 36, 0.5),
        0 18px 45px rgba(251, 191, 36, 0.4);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow:
        0 0 0 1px rgba(251, 191, 36, 0.7),
        0 20px 55px rgba(251, 191, 36, 0.5);
}

/* Ghost / outline button
   -------------------------------------------------------------------------- */
.btn-ghost {
    border-color: var(--vp-color-btn-border-muted);
    background: rgba(15, 23, 42, 0.75);
    color: #e5e7eb;
}

.btn-ghost:hover:not(:disabled) {
    border-color: rgba(251, 191, 36, 0.75);
    background: radial-gradient(
        circle at top,
        rgba(251, 191, 36, 0.12),
        rgba(15, 23, 42, 0.9)
    );
    transform: translateY(-1px);
}

/* Size modifiers
   -------------------------------------------------------------------------- */
.btn--sm {
    padding: 0.5rem 1.1rem;
    font-size: 0.8rem;
}

.btn--lg {
    padding: 0.9rem 1.7rem;
    font-size: 0.95rem;
}

/* Full-width button */
.btn--full {
    width: 100%;
}

/* Icon helpers (optional spans inside buttons)
   -------------------------------------------------------------------------- */
.btn-icon-left,
.btn-icon-right {
    display: inline-flex;
    align-items: center;
}

.btn-icon-left {
    margin-right: 0.25rem;
}

.btn-icon-right {
    margin-left: 0.25rem;
}