/* ==========================================================================
   Nitro Simracing - Button Components
   ========================================================================== */

.sn-btn {
  --_btn-bg: var(--sn-grad-theme);
  --_btn-bg-hover: linear-gradient(135deg, var(--sn-theme-primary-hover), var(--sn-theme-primary-accent));
  --_btn-color: #fff;
  --_btn-border: var(--sn-theme-primary-accent);
  
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sn-space-2);
  
  font: 600 var(--sn-font-size)/1 var(--sn-font-sans);
  color: var(--_btn-color);
  background: var(--_btn-bg);
  border: 1px solid var(--_btn-border);
  border-radius: var(--sn-radius-btn);
  padding: 12px 20px;
  
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  
  box-shadow: 0 4px 12px rgba(201, 13, 5, 0.3);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

/* Glass Edge Highlight */
.sn-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  opacity: 0.6;
}

.sn-btn:hover,
.sn-btn:focus {
  background: var(--_btn-bg-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(201, 13, 5, 0.5);
  outline: none;
}

.sn-btn:active {
  transform: translateY(1px);
  box-shadow: 0 2px 4px rgba(201, 13, 5, 0.3);
}

.sn-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  filter: grayscale(0.5);
}

/* Button Variants */
.sn-btn--primary {
  /* Default handled by base btn class */
  color: #fff;
}

.sn-btn--outline {
  background: rgba(26, 29, 36, 0.6);
  backdrop-filter: blur(8px);
  --_btn-border: rgba(255, 59, 48, 0.5);
  color: var(--sn-theme-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.sn-btn--outline::after { display: none; }

.sn-btn--outline:hover {
  background: rgba(255, 59, 48, 0.1);
  border-color: var(--sn-theme-primary);
  box-shadow: 0 4px 12px rgba(255, 59, 48, 0.2);
}

.sn-btn--ghost {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  color: var(--sn-color-text-soft);
}

.sn-btn--ghost::after { display: none; }

.sn-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  box-shadow: none;
}

/* Button Sizes */
.sn-btn--sm {
  padding: 8px 16px;
  font-size: var(--sn-font-size-sm);
  border-radius: var(--sn-radius-sm);
}

.sn-btn--xs {
  padding: 6px 12px;
  font-size: var(--sn-font-size-xs);
  border-radius: var(--sn-radius-xs);
}

.sn-btn--lg {
  padding: 16px 28px;
  font-size: var(--sn-font-size-md);
  border-radius: var(--sn-radius-lg);
}

/* Icon Buttons */
.sn-btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--sn-radius-pill);
}

.sn-btn--icon.sn-btn--sm {
  width: 36px;
  height: 36px;
}

.sn-btn--icon svg {
  width: 20px;
  height: 20px;
}

.sn-btn--block {
  width: 100%;
}

.sn-btn-mini {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 28px;
  padding: 0 10px;
  border-radius: var(--sn-radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.08);
  color: var(--sn-color-text);
  font: 700 var(--sn-font-size-xs)/1 var(--sn-font-sans);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: var(--sn-transition-fast);
}

.sn-btn-mini:hover,
.sn-btn-mini:focus {
  background: rgba(255, 59, 48, 0.14);
  border-color: rgba(255, 59, 48, 0.32);
  color: #fff;
}