/**
 * Buttons Component - Clean Architecture
 * =======================================
 * RESTORED TO ORIGINAL IDENTITY
 */

.btn,
a.btn,
button.btn,
input[type="submit"].btn,
input[type="button"].btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;

  padding: var(--spacing-md) var(--spacing-lg);

  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  text-transform: var(--btn-text-transform, uppercase);
  letter-spacing: var(--btn-letter-spacing, 0.1em);

  border: 1px solid transparent;
  border-radius: var(--radius-full);
  /* Original radius */

  cursor: pointer;
  user-select: none;

  transition: all 0.3s ease;
}

.btn:disabled,
a.btn:disabled,
button.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary Button */
.btn-primary,
a.btn-primary,
button.btn-primary {
  background: var(--color-accent);
  color: var(--color-text-on-primary);
  border: 2px solid var(--color-accent);
}

.btn-primary:hover,
a.btn-primary:hover,
button.btn-primary:hover {
  background: var(--color-background);
  color: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow-subtle);
}

/* Secondary Button */
.btn-secondary,
a.btn-secondary,
button.btn-secondary {
  background: var(--color-background-light);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover,
a.btn-secondary:hover,
button.btn-secondary:hover {
  background: var(--color-background);
  border-color: var(--color-text-primary);
  transform: translateY(-1px);
}

/* Sizes */
.btn-sm,
a.btn-sm,
button.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-lg,
a.btn-lg,
button.btn-lg {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

/* Responsive */
@media (max-width: 768px) {

  .btn,
  a.btn,
  button.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
  }
}

/* ==========================================================================
   PREMIUM BUTTONS - Tech Cinematic Aesthetic (SINGLE SOURCE OF TRUTH)
   ========================================================================== */

.btn-premium-primary {
  font-family: var(--font-display);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  text-transform: var(--btn-text-transform);
  letter-spacing: var(--btn-letter-spacing);
  
  background: var(--color-accent);
  color: #0D0D12 !important; /* Obsidian text on cyan */
  border-radius: var(--radius-full) !important;
  padding: var(--btn-padding-y) var(--btn-padding-x);
  border: 1px solid var(--color-accent);
  
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.2);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  cursor: pointer;
}

body .btn-premium-primary:hover {
  transform: translateY(-2px) scale(1.05) !important;
  background: linear-gradient(135deg, #22d3ee 0%, #0ea5e9 100%) !important;
  color: #0D0D12 !important;
  border-color: #0ea5e9 !important;
  box-shadow: 
    0 0 10px rgba(255, 255, 255, 0.4),
    0 0 35px rgba(14, 165, 233, 0.7),
    0 0 70px rgba(34, 211, 238, 0.4) !important;
}

.btn-premium-glass {
  font-family: var(--font-display);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  text-transform: var(--btn-text-transform);
  letter-spacing: var(--btn-letter-spacing);

  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff !important;
  border-radius: var(--radius-full) !important;
  padding: var(--btn-padding-y) var(--btn-padding-x);
  
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  cursor: pointer;
}

.btn-premium-glass:hover {
  background: rgba(34, 211, 238, 0.1);
  border-color: var(--color-accent);
  color: var(--color-accent) !important;
  box-shadow: 0 0 30px rgba(34, 211, 238, 0.15);
  transform: translateY(-2px);
}

/* Atomic Premium Glow (Derived from V18 prototype) */
.btn-tech-glow {
    font-family: var(--font-display);
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 2rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    text-transform: var(--btn-text-transform);
    letter-spacing: var(--btn-letter-spacing);
    text-decoration: none;
    border-radius: var(--radius-full) !important;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #ffffff !important;
    overflow: hidden;
    backdrop-filter: blur(4px);
}

.btn-tech-glow:hover {
    border-color: var(--neon-blue);
    background: rgba(34, 211, 238, 0.1);
    box-shadow: 0 0 20px rgba(34, 211, 238, 0.4);
    text-shadow: 0 0 2px rgba(255, 255, 255, 0.8), 0 0 10px rgba(34, 211, 238, 0.5);
    transform: translateY(-2px);
}

/* Base button override for premium looks */
.btn-premium {
  border-radius: var(--radius-full) !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--font-size-sm);
}