/* ==========================================================================
   Button (.qhr-btn)
   ========================================================================== */
.qhr-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--qhr-font-body);
  font-weight: 600;
  border-radius: var(--qhr-radius-md, 10px);
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--qhr-duration-fast, 150ms) var(--qhr-ease-default, ease),
              border-color var(--qhr-duration-fast, 150ms) var(--qhr-ease-default, ease),
              box-shadow var(--qhr-duration-fast, 150ms) var(--qhr-ease-default, ease),
              transform var(--qhr-duration-fast, 150ms) var(--qhr-ease-default, ease);
}

.qhr-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--qhr-ring-focus, rgba(11, 107, 203, 0.35));
}

.qhr-btn:active {
  transform: scale(0.98);
}

/* Sizing */
.qhr-btn--xs {
  font-size: var(--qhr-text-xs, 0.75rem);
  padding-block: var(--qhr-space-1, 4px);
  padding-inline: var(--qhr-space-2, 8px);
  gap: var(--qhr-space-1, 4px);
  border-radius: var(--qhr-radius-xs, 4px);
}

.qhr-btn--sm {
  font-size: var(--qhr-text-sm, 0.875rem);
  padding-block: var(--qhr-space-1-5, 6px);
  padding-inline: var(--qhr-space-3, 12px);
  gap: var(--qhr-space-1-5, 6px);
  border-radius: var(--qhr-radius-sm, 6px);
}

.qhr-btn--md {
  font-size: var(--qhr-text-base, 1rem);
  padding-block: var(--qhr-space-2, 8px);
  padding-inline: var(--qhr-space-4, 16px);
  gap: var(--qhr-space-2, 8px);
  border-radius: var(--qhr-radius-md, 10px);
}

.qhr-btn--lg {
  font-size: var(--qhr-text-lg, 1.125rem);
  padding-block: var(--qhr-space-3, 12px);
  padding-inline: var(--qhr-space-6, 24px);
  gap: var(--qhr-space-3, 12px);
  border-radius: var(--qhr-radius-lg, 16px);
}

.qhr-btn--xl {
  font-size: var(--qhr-text-xl, 1.25rem);
  padding-block: var(--qhr-space-4, 16px);
  padding-inline: var(--qhr-space-8, 32px);
  gap: var(--qhr-space-4, 16px);
  border-radius: var(--qhr-radius-xl, 24px);
}

/* Variants - Light & Default */
.qhr-btn--primary {
  background-color: var(--qhr-button-primary-background, var(--qhr-color-primary, var(--qhr-color-primary-bg, #0b6bcb)));
  color: var(--qhr-button-primary-foreground, var(--qhr-color-primary-fg, #ffffff));
  border-color: var(--qhr-button-primary-border, var(--qhr-color-primary, #0b6bcb));
  box-shadow: 0 1px 2px 0 rgba(11, 107, 203, 0.2);
}
.qhr-btn--primary:hover {
  background-color: var(--qhr-button-primary-hover, var(--qhr-color-primary-hover, #0958a5));
  border-color: var(--qhr-button-primary-hover, var(--qhr-color-primary-hover, #0958a5));
}

.qhr-btn--secondary {
  background-color: var(--qhr-button-secondary-background, var(--qhr-color-secondary, var(--qhr-color-secondary-bg, #f1f5f9)));
  color: var(--qhr-button-secondary-foreground, var(--qhr-color-secondary-fg, #0f172a));
  border-color: var(--qhr-button-secondary-border, var(--qhr-color-secondary-border, #cbd5e1));
}
.qhr-btn--secondary:hover {
  background-color: var(--qhr-button-secondary-hover, var(--qhr-color-secondary-hover, #e2e8f0));
  border-color: var(--qhr-border-strong, #94a3b8);
}

.qhr-btn--outline {
  background-color: transparent;
  border: 1.5px solid var(--qhr-button-outline-border, var(--qhr-color-primary-border, var(--qhr-color-primary, #0b6bcb)));
  color: var(--qhr-button-outline-foreground, var(--qhr-color-primary, var(--qhr-color-primary-bg, #0b6bcb)));
}
.qhr-btn--outline:hover {
  background-color: var(--qhr-button-outline-hover, var(--qhr-color-primary-subtle, #eff6ff));
}

.qhr-btn--ghost {
  background-color: transparent;
  color: var(--qhr-button-ghost-foreground, var(--qhr-color-primary, var(--qhr-color-primary-bg, #0b6bcb)));
}
.qhr-btn--ghost:hover {
  background-color: var(--qhr-button-ghost-hover, var(--qhr-color-primary-subtle, #eff6ff));
}

.qhr-btn--destructive {
  background-color: var(--qhr-button-destructive-background, var(--qhr-color-danger-bg, #e11d48));
  color: #ffffff;
  box-shadow: 0 1px 2px 0 rgba(225, 29, 72, 0.2);
}
.qhr-btn--destructive:hover {
  background-color: var(--qhr-button-destructive-hover, var(--qhr-color-danger-hover, #be123c));
}

.qhr-btn.is-disabled, .qhr-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}

/* ── Tones (General Buttons) ────────────────────────────────────────── */
.qhr-btn--tone-default {
  background-color: var(--qhr-color-slate-100, #f1f5f9);
  color: var(--qhr-color-slate-900, #0f172a);
  border-color: var(--qhr-color-slate-300, #cbd5e1);
}
.qhr-btn--tone-default:hover {
  background-color: var(--qhr-color-slate-200, #e2e8f0);
}

.qhr-btn--tone-primary {
  background-color: var(--qhr-color-primary-bg, #0b6bcb);
  color: #ffffff;
}
.qhr-btn--tone-primary:hover {
  background-color: var(--qhr-color-primary-hover, #0958a5);
}

.qhr-btn--tone-secondary {
  background-color: #64748b;
  color: #ffffff;
}
.qhr-btn--tone-secondary:hover {
  background-color: #475569;
}

.qhr-btn--tone-info {
  background-color: var(--qhr-color-purple-600, #7c3aed);
  color: #ffffff;
}
.qhr-btn--tone-info:hover {
  background-color: var(--qhr-color-purple-700, #6d28d9);
}

.qhr-btn--tone-success {
  background-color: var(--qhr-color-success-bg, #059669);
  color: #ffffff;
}
.qhr-btn--tone-success:hover {
  background-color: var(--qhr-color-success-hover, #047857);
}

.qhr-btn--tone-danger {
  background-color: var(--qhr-color-danger-bg, #e11d48);
  color: #ffffff;
}
.qhr-btn--tone-danger:hover {
  background-color: var(--qhr-color-danger-hover, #be123c);
}

.qhr-btn--tone-warning {
  background-color: var(--qhr-color-warning-bg, #d97706);
  color: #ffffff;
}
.qhr-btn--tone-warning:hover {
  background-color: var(--qhr-color-warning-hover, #b45309);
}

.qhr-btn--tone-dark {
  background-color: #0f172a;
  color: #ffffff;
}
.qhr-btn--tone-dark:hover {
  background-color: #020617;
}

.qhr-btn--tone-light {
  background-color: #f8fafc;
  color: #0f172a;
  border-color: #e2e8f0;
}
.qhr-btn--tone-light:hover {
  background-color: #f1f5f9;
}

/* ── Gradient Buttons (.qhr-btn--gradient) ──────────────────────────── */
.qhr-btn--gradient {
  color: #ffffff !important;
  border: none !important;
}
.qhr-btn--gradient.qhr-btn--tone-primary,
.qhr-btn--gradient-primary {
  background: linear-gradient(135deg, #0b6bcb 0%, #3b82f6 100%);
}
.qhr-btn--gradient.qhr-btn--tone-secondary,
.qhr-btn--gradient-secondary {
  background: linear-gradient(135deg, #64748b 0%, #94a3b8 100%);
}
.qhr-btn--gradient.qhr-btn--tone-info,
.qhr-btn--gradient-info {
  background: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
}
.qhr-btn--gradient.qhr-btn--tone-success,
.qhr-btn--gradient-success {
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
}
.qhr-btn--gradient.qhr-btn--tone-danger,
.qhr-btn--gradient-danger {
  background: linear-gradient(135deg, #e11d48 0%, #f43f5e 100%);
}
.qhr-btn--gradient.qhr-btn--tone-warning,
.qhr-btn--gradient-warning {
  background: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
}
.qhr-btn--gradient:hover {
  opacity: 0.92;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* ── Light Buttons (Soft background, colored text) ───────────────────── */
.qhr-btn--light {
  border-color: transparent !important;
}
.qhr-btn--light.qhr-btn--tone-primary {
  background-color: var(--qhr-color-blue-50, #eff6ff);
  color: var(--qhr-color-primary-bg, #0b6bcb);
}
.qhr-btn--light.qhr-btn--tone-info {
  background-color: var(--qhr-color-purple-50, #faf5ff);
  color: var(--qhr-color-purple-600, #7c3aed);
}
.qhr-btn--light.qhr-btn--tone-success {
  background-color: var(--qhr-color-emerald-50, #ecfdf5);
  color: var(--qhr-color-success-bg, #059669);
}
.qhr-btn--light.qhr-btn--tone-danger {
  background-color: var(--qhr-color-rose-50, #fff1f2);
  color: var(--qhr-color-danger-bg, #e11d48);
}
.qhr-btn--light.qhr-btn--tone-warning {
  background-color: var(--qhr-color-amber-50, #fffbeb);
  color: var(--qhr-color-warning-bg, #d97706);
}

/* ── Outline Buttons with Tones ─────────────────────────────────────── */
.qhr-btn--outline.qhr-btn--tone-default {
  background-color: transparent;
  border: 1.5px solid #cbd5e1;
  color: #475569;
}
.qhr-btn--outline.qhr-btn--tone-primary {
  background-color: transparent;
  border: 1.5px solid var(--qhr-color-primary-bg, #0b6bcb);
  color: var(--qhr-color-primary-bg, #0b6bcb);
}
.qhr-btn--outline.qhr-btn--tone-secondary {
  background-color: transparent;
  border: 1.5px solid #64748b;
  color: #64748b;
}
.qhr-btn--outline.qhr-btn--tone-info {
  background-color: transparent;
  border: 1.5px solid #7c3aed;
  color: #7c3aed;
}
.qhr-btn--outline.qhr-btn--tone-success {
  background-color: transparent;
  border: 1.5px solid #059669;
  color: #059669;
}
.qhr-btn--outline.qhr-btn--tone-danger {
  background-color: transparent;
  border: 1.5px solid #e11d48;
  color: #e11d48;
}
.qhr-btn--outline.qhr-btn--tone-warning {
  background-color: transparent;
  border: 1.5px solid #d97706;
  color: #d97706;
}
.qhr-btn--outline.qhr-btn--tone-dark {
  background-color: transparent;
  border: 1.5px solid #0f172a;
  color: #0f172a;
}
.qhr-btn--outline.qhr-btn--tone-light {
  background-color: transparent;
  border: 1.5px solid #e2e8f0;
  color: #64748b;
}

/* ── Light Outline Buttons (Soft border with colored text) ──────────── */
.qhr-btn--outline-light.qhr-btn--tone-primary {
  border: 1px solid rgba(11, 107, 203, 0.3);
  color: #0b6bcb;
  background-color: transparent;
}
.qhr-btn--outline-light.qhr-btn--tone-info {
  border: 1px solid rgba(124, 58, 237, 0.3);
  color: #7c3aed;
  background-color: transparent;
}
.qhr-btn--outline-light.qhr-btn--tone-success {
  border: 1px solid rgba(5, 150, 105, 0.3);
  color: #059669;
  background-color: transparent;
}
.qhr-btn--outline-light.qhr-btn--tone-danger {
  border: 1px solid rgba(225, 29, 72, 0.3);
  color: #e11d48;
  background-color: transparent;
}
.qhr-btn--outline-light.qhr-btn--tone-warning {
  border: 1px solid rgba(217, 119, 6, 0.3);
  color: #d97706;
  background-color: transparent;
}

/* ── Rounded Pill Buttons (.qhr-btn--rounded) ───────────────────────── */
.qhr-btn--rounded {
  border-radius: var(--qhr-radius-pill, 9999px) !important;
}

/* ── Flat Buttons (.qhr-btn--flat) ──────────────────────────────────── */
.qhr-btn--flat {
  box-shadow: none !important;
  border-radius: 0px !important;
}

/* ── Circle Buttons (.qhr-btn--circle) ──────────────────────────────── */
.qhr-btn--circle {
  border-radius: 50% !important;
  padding: 0 !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  flex-shrink: 0;
}
.qhr-btn--circle.qhr-btn--xs {
  width: 24px;
  height: 24px;
  font-size: 11px;
}
.qhr-btn--circle.qhr-btn--sm {
  width: 32px;
  height: 32px;
  font-size: 13px;
}
.qhr-btn--circle.qhr-btn--md {
  width: 40px;
  height: 40px;
  font-size: 15px;
}
.qhr-btn--circle.qhr-btn--lg {
  width: 48px;
  height: 48px;
  font-size: 18px;
}
.qhr-btn--circle.qhr-btn--xl {
  width: 56px;
  height: 56px;
  font-size: 22px;
}

/* ── Split Buttons (.qhr-btn-split) ─────────────────────────────────── */
.qhr-btn-split {
  display: inline-flex;
  align-items: stretch;
  vertical-align: middle;
}
.qhr-btn-split > .qhr-btn:first-child {
  border-start-end-radius: 0;
  border-end-end-radius: 0;
}
.qhr-btn-split > .qhr-btn:last-child {
  border-start-start-radius: 0;
  border-end-start-radius: 0;
  padding-inline: var(--qhr-space-2, 8px);
  border-inline-start: 1px solid rgba(255, 255, 255, 0.25);
}

/* ── Button Groups (.qhr-btn-group / .qhr-btn-group--vertical) ──────── */
.qhr-btn-group {
  display: inline-flex;
  align-items: stretch;
  vertical-align: middle;
}
.qhr-btn-group > .qhr-btn {
  border-radius: 0;
}
.qhr-btn-group > .qhr-btn:not(:first-child) {
  margin-inline-start: -1px;
}
.qhr-btn-group > .qhr-btn:first-child {
  border-start-start-radius: var(--qhr-radius-md, 10px);
  border-end-start-radius: var(--qhr-radius-md, 10px);
}
.qhr-btn-group > .qhr-btn:last-child {
  border-start-end-radius: var(--qhr-radius-md, 10px);
  border-end-end-radius: var(--qhr-radius-md, 10px);
}

.qhr-btn-group--vertical {
  display: inline-flex;
  flex-direction: column;
  align-items: stretch;
}
.qhr-btn-group--vertical > .qhr-btn {
  border-radius: 0;
  width: 100%;
}
.qhr-btn-group--vertical > .qhr-btn:not(:first-child) {
  margin-block-start: -1px;
}
.qhr-btn-group--vertical > .qhr-btn:first-child {
  border-start-start-radius: var(--qhr-radius-md, 10px);
  border-start-end-radius: var(--qhr-radius-md, 10px);
}
.qhr-btn-group--vertical > .qhr-btn:last-child {
  border-end-start-radius: var(--qhr-radius-md, 10px);
  border-end-end-radius: var(--qhr-radius-md, 10px);
}

/* ── Social Buttons (.qhr-btn--social) ──────────────────────────────── */
.qhr-btn--social {
  display: inline-flex;
  align-items: center;
  gap: var(--qhr-space-2, 8px);
  color: #ffffff !important;
}
.qhr-btn--social-github   { background-color: #24292e; }
.qhr-btn--social-twitter  { background-color: #1da1f2; }
.qhr-btn--social-facebook { background-color: #1877f2; }
.qhr-btn--social-linkedin { background-color: #0a66c2; }
.qhr-btn--social-youtube  { background-color: #ff0000; }
.qhr-btn--social-whatsapp { background-color: #25d366; }

/* ── Application Buttons (.qhr-btn-app) ─────────────────────────────── */
.qhr-btn-app {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 80px;
  height: 70px;
  padding: var(--qhr-space-3, 12px);
  font-size: var(--qhr-text-xs, 0.75rem);
  font-weight: 600;
  border-radius: var(--qhr-radius-md, 10px);
  border: 1px solid var(--qhr-border-subtle, rgba(255, 255, 255, 0.1));
  background-color: var(--qhr-surface-elevated, #1e293b);
  color: var(--qhr-text-base, #ffffff);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--qhr-duration-fast, 150ms) ease;
}
.qhr-btn-app:hover {
  border-color: var(--qhr-brand-primary, #0b6bcb);
  transform: translateY(-2px);
}
.qhr-btn-app svg {
  width: 24px;
  height: 24px;
  margin-block-end: var(--qhr-space-1, 4px);
}
.qhr-btn-app .qhr-badge {
  position: absolute;
  top: -6px;
  inset-inline-end: -6px;
}

/* ── 1. Floating Action Button (.qhr-btn--fab) ────────────────────── */
.qhr-btn--fab {
  position: fixed;
  inset-block-end: var(--qhr-space-6, 24px);
  inset-inline-end: var(--qhr-space-6, 24px);
  width: 56px;
  height: 56px;
  border-radius: var(--qhr-radius-pill, 9999px);
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--qhr-shadow-lg, 0 10px 25px -5px rgba(0,0,0,0.4));
  z-index: var(--qhr-z-sticky, 900);
  transition: transform var(--qhr-motion-duration-fast, 150ms) var(--qhr-motion-ease-standard),
              box-shadow var(--qhr-motion-duration-fast, 150ms) var(--qhr-motion-ease-standard);
}
.qhr-btn--fab:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: var(--qhr-shadow-xl, 0 20px 30px -10px rgba(0,0,0,0.5));
}
.qhr-btn--fab--sm {
  width: 44px;
  height: 44px;
}