/* ── Button CSS Variables ── */
:root {
  --surface: #3f49d4;
  --accent: #444444;
  --accent-dim: #333333;
  --text-primary: #f0f0f0;
  --text-muted: rgba(255,255,255,0.45);
  --border: rgba(255,255,255,0.15);
  --radius: 6px;
}

/* ── Base Button ── */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  font-family: Arial, Calibri, sans-serif !important;
  font-size: 14px !important;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  outline: none;
  overflow: hidden;
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.3s ease,
    transform 0.12s ease,
    color 0.2s ease !important;
}

/* ── Hover ── */
.btn:hover {
  border-color: rgba(68,68,68,0.35);
  background: #4a55e8;
  box-shadow:
      0 0 0 10px rgba(236, 236, 236, 0.15),
      0 8px 15px rgba(68, 68, 68, 0.25) !important;
}

/* ── Focus ── */
.btn:focus-visible {
  border-color: var(--accent);
  box-shadow:
    0 0 0 3px rgba(68,68,68,0.25),
    0 0 15px rgba(68,68,68,0.12) !important;
}

/* ── Active / Press ── */
.btn:active {
  transform: scale(0.98); 
  background: #3a44cc;
  border-color: rgba(255,255,255,0.2);
  box-shadow: inset 0 2px 6px rgba(0,0,0,0.3);
  color: var(--text-primary);
}

/* ── Disabled ── */
.btn:disabled,
.btn.disabled {
  cursor: not-allowed;
  opacity: 1;
  background: #2e3699;
  border-color: rgba(255,255,255,0.04);
  color: var(--text-muted);
  pointer-events: none;
  box-shadow: none;
}
.btn:disabled .btn-icon,
.btn.disabled .btn-icon {
  opacity: 0.3;
}

/* ── Icon ── */
.btn-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  transition: transform 0.2s ease, opacity 0.2s;
}
.btn:hover .btn-icon {
  transform: translateX(2px);
}

/* ── Accent Variant ── */
.btn-accent {
  background: var(--accent);
  color: #f0f0f0;
  border-color: transparent;
}
.btn-accent:hover {
  background: #555555;
  border-color: transparent;
  box-shadow: 0 8px 32px rgba(68,68,68,0.12);
}
.btn-accent:focus-visible {
  box-shadow:
    0 0 0 3px rgba(68,68,68,0.4),
    0 0 24px rgba(68,68,68,0.2);
  border-color: transparent;
}
.btn-accent:active {
  background: #4a4a4a;
  border-color: transparent;
}
.btn-accent:disabled {
  background: #2e2e2e;
  color: rgba(255,255,255,0.25);
  border-color: transparent;
}

/* ── Size Variants ── */
.btn-xs {
  padding: 4px 16px;
  font-size: 12px !important;
  border-radius: 6px;
  letter-spacing: 0.07em;
}

.btn-sm {
  padding: 6px 18px;
  font-size: 12px !important;
  border-radius: 6px;
  letter-spacing: 0.07em;
}

.btn-inline {
  padding: 6px 18px;
  font-size: 14px !important;
  border-radius: 6px;
  letter-spacing: 0.07em;
}


.btn-lg {
  padding: 15px 36px;
  font-size: 14px !important;
  border-radius: 8px;
  letter-spacing: 0.08em;
}