/* ═══════════════════════════════════════════
   COMPONENTS — MoMoney-inspired: Bold, neon, rounded
   ═══════════════════════════════════════════ */

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  border-radius: var(--border-radius-pill);
  border: 2px solid transparent;
  cursor: none;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
  text-transform: none;
  text-decoration: none;
}

.btn--primary {
  background: var(--neon-cyan);
  color: var(--surface-bg);
  border-color: var(--neon-cyan);
}

.btn--primary:hover {
  background: transparent;
  color: var(--neon-cyan);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-3px) scale(1.03);
}

.btn--outline {
  background: transparent;
  color: var(--surface-text);
  border-color: rgba(255,255,255,0.25);
}

.btn--outline:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-3px);
}

.btn--large {
  padding: var(--space-6) var(--space-12);
  font-size: var(--text-lg);
}

.btn__arrow {
  transition: transform var(--transition-bounce);
}

.btn:hover .btn__arrow {
  transform: translateX(6px);
}

.btn__loader {
  display: none;
  width: 24px;
  height: 24px;
  border: 3px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn.is-loading .btn__text { opacity: 0; }
.btn.is-loading .btn__arrow { display: none; }
.btn.is-loading .btn__loader { display: block; }

/* Ripple effect container */
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--ripple-x, 50%) var(--ripple-y, 50%),
    rgba(255,255,255,0.35) 0%, transparent 60%);
  opacity: 0;
  transform: scale(0);
  transition: opacity 0.5s, transform 0.5s;
}

.btn.is-rippling::after {
  opacity: 1;
  transform: scale(2.5);
}

/* ─── Tags ─── */
.tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-widest);
  text-transform: none;
  opacity: 0.8;
}

.tag--small {
  font-size: clamp(0.6rem, 0.55rem + 0.2vw, 0.7rem);
  padding: var(--space-1) var(--space-4);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--border-radius-pill);
  background: rgba(255,255,255,0.05);
}

.tag__separator {
  font-size: var(--text-xs);
  opacity: 0.3;
  margin: 0 var(--space-2);
}

/* ─── Pills (tech stack) ─── */
.pill {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--border-radius-pill);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.pill:hover {
  background: rgba(0,229,255,0.15);
  border-color: var(--neon-cyan);
  box-shadow: var(--shadow-glow-cyan);
  color: var(--neon-cyan);
}

/* ─── Tech Pills (floating orbit) ─── */
.tech-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--border-radius-xl);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: none;
  transition: all var(--transition-bounce);
  will-change: transform;
  color: var(--deep-text);
}

.tech-pill:hover {
  background: rgba(168,85,247,0.15);
  border-color: var(--neon-violet);
  box-shadow: var(--shadow-glow-violet);
  transform: scale(1.1);
  color: var(--neon-violet);
}

/* ─── Link Arrow ─── */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  text-transform: none;
  color: var(--neon-cyan);
  transition: gap var(--transition-bounce), color var(--transition-fast);
}

.link-arrow:hover {
  gap: var(--space-4);
  color: var(--surface-text);
}

.link-arrow svg {
  transition: transform var(--transition-bounce);
}

.link-arrow:hover svg {
  transform: translateX(6px);
}

/* ─── Link Underline ─── */
.link-underline {
  position: relative;
  display: inline;
}

.link-underline::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--neon-cyan);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-base);
}

.link-underline:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* ─── Form Elements (dark theme — MoMoney) ─── */
.form-group {
  position: relative;
  margin-bottom: var(--space-8);
}

.form-input {
  width: 100%;
  padding: var(--space-4) var(--space-4) var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--surface-text);
  background: rgba(255,255,255,0.04);
  border: none;
  border-bottom: 2px solid rgba(255,255,255,0.15);
  border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
  outline: none;
  cursor: none;
  transition: all var(--transition-base);
}

.form-input:focus {
  border-bottom-color: var(--neon-cyan);
  background: rgba(0,229,255,0.04);
}

.form-label {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: rgba(255,255,255,0.4);
  pointer-events: none;
  transition: all var(--transition-base);
}

.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  top: 0;
  font-size: var(--text-xs);
  color: var(--neon-cyan);
  letter-spacing: var(--tracking-wide);
  font-weight: var(--weight-bold);
}

.form-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--neon-cyan);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

.form-input:focus ~ .form-line {
  transform: scaleX(1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ─── Form Group States ─── */
.form-group.is-active .form-label {
  top: 0;
  font-size: var(--text-xs);
  color: var(--neon-cyan);
  letter-spacing: var(--tracking-wide);
  font-weight: var(--weight-bold);
}

.form-group.is-error .form-input {
  border-bottom-color: var(--coral);
  background: rgba(255,51,102,0.04);
}

.form-group.is-error .form-line {
  background: var(--coral);
  transform: scaleX(1);
}

.form-group.is-error .form-label {
  color: var(--coral);
}

/* ─── Button Ripple (dynamic span from JS) ─── */
.btn-ripple {
  position: absolute;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0);
}

/* ─── Button Success State ─── */
.btn.is-success {
  background: var(--neon-green);
  border-color: var(--neon-green);
  color: var(--surface-bg);
}

/* ─── Glass Card (reusable) ─── */
.glass-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--border-radius-xl);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all var(--transition-base);
}

.glass-card:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.15);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

/* ─── Particles Container ─── */
.particles {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

/* ─── Bubble Element ─── */
.bubble {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  will-change: transform;
}

/* ─── Liquid Metal Button ─── */

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   LIQUID METAL BUTTONS (CTA)
   Circular buttons that expand to pill shape on hover,
   revealing text inline with animated liquid metal shader.
   Powered by @paper-design/shaders.
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

/* Button base: starts circular, expands to pill on hover */
.liquid-metal-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  text-decoration: none;
  overflow: hidden;
  flex-shrink: 0;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              border-radius 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              gap 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              padding 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ShaderMount auto-creates a canvas — style it to match button shape */
.liquid-metal-btn > canvas {
  position: absolute !important;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  border-radius: inherit;
  z-index: 1;
  transition: border-radius 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark overlay for depth */
.liquid-metal-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: inherit;
  background: linear-gradient(135deg, #444, #000);
  box-shadow: inset 0 0 8px rgba(0,0,0,0.6);
  z-index: 2;
  pointer-events: none;
  opacity: 0.35;
  transition: opacity 0.3s ease,
              width 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              height 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              border-radius 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Outline ring with conic gradient */
.liquid-metal-btn__outline {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border-radius: inherit;
  z-index: 3;
  pointer-events: none;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              height 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              border-radius 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.liquid-metal-btn__outline::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 2px;
  background: conic-gradient(
    from 230deg,
    hsl(240deg 80% 70%) 0deg,
    hsl(280deg 80% 70%) 30deg,
    hsl(320deg 80% 70%) 60deg,
    hsl(360deg 80% 70%) 90deg,
    hsl(40deg 80% 70%) 120deg,
    hsl(80deg 80% 70%) 150deg,
    hsl(120deg 80% 70%) 180deg,
    hsl(160deg 80% 70%) 210deg,
    hsl(200deg 80% 70%) 240deg,
    hsl(240deg 80% 70%) 270deg,
    hsl(280deg 80% 70%) 300deg,
    hsl(320deg 80% 70%) 330deg,
    hsl(360deg 80% 70%) 360deg
  );
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  z-index: 1;
  filter: grayscale(1) brightness(0.7);
  transition: filter 0.3s ease;
}

/* Arrow icon */
.liquid-metal-btn__icon {
  fill: #65615f;
  z-index: 4;
  flex-shrink: 0;
  transition: transform 0.3s ease, fill 0.3s ease;
  transform: rotate(-45deg);
  position: relative;
}

/* Label text (inside button, hidden by default) */
.liquid-metal-btn__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-widest);
  text-transform: none;
  color: #fff;
  white-space: nowrap;
  max-width: 0;
  overflow: hidden;
  opacity: 0;
  z-index: 4;
  position: relative;
  transition: max-width 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.3s ease 0.15s;
}

/* Size variants */
.liquid-metal-btn--sm {
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 50%;
}

.liquid-metal-btn--sm::before {
  width: 2.9rem;
  height: 2.9rem;
  border-radius: 50%;
}

.liquid-metal-btn--sm .liquid-metal-btn__outline {
  width: 3.3rem;
  height: 3.3rem;
  border-radius: 50%;
}

.liquid-metal-btn--sm .liquid-metal-btn__icon {
  width: 1rem;
  height: 1rem;
}

.liquid-metal-btn--lg {
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
}

.liquid-metal-btn--lg::before {
  width: 5.4rem;
  height: 5.4rem;
  border-radius: 50%;
}

.liquid-metal-btn--lg .liquid-metal-btn__outline {
  width: 6.2rem;
  height: 6.2rem;
  border-radius: 50%;
}

.liquid-metal-btn--lg .liquid-metal-btn__icon {
  width: 1.5rem;
  height: 1.5rem;
}

/* Hover state: expand to pill, reveal text */
.liquid-metal-btn--sm:hover {
  width: 9rem;
  border-radius: 1.6rem;
  padding: 0 1rem;
  gap: var(--space-2);
}

.liquid-metal-btn--sm:hover::before {
  width: 8.2rem;
  height: 2.9rem;
  border-radius: 1.45rem;
}

.liquid-metal-btn--sm:hover .liquid-metal-btn__outline {
  width: 9.4rem;
  height: 3.3rem;
  border-radius: 1.65rem;
}

.liquid-metal-btn--lg:hover {
  width: 16rem;
  border-radius: 3rem;
  padding: 0 1.5rem;
  gap: var(--space-3);
}

.liquid-metal-btn--lg:hover::before {
  width: 14.4rem;
  height: 5.4rem;
  border-radius: 2.7rem;
}

.liquid-metal-btn--lg:hover .liquid-metal-btn__outline {
  width: 16.6rem;
  height: 6.2rem;
  border-radius: 3.1rem;
}

.liquid-metal-btn:hover::before {
  opacity: 0.25;
}

.liquid-metal-btn:hover .liquid-metal-btn__outline::before {
  filter: grayscale(0) brightness(1);
}

.liquid-metal-btn:hover .liquid-metal-btn__icon {
  transform: rotate(-45deg) translate(2px, -2px);
  fill: #fff;
}

.liquid-metal-btn:hover .liquid-metal-btn__label {
  max-width: 8rem;
  opacity: 1;
}

/* Loading state */
.liquid-metal-btn.is-loading .liquid-metal-btn__outline { opacity: 0.4; }
.liquid-metal-btn.is-loading .btn__loader { display: block; position: absolute; z-index: 2; }

/* Success state */
.liquid-metal-btn.is-success .liquid-metal-btn__outline::before {
  background: conic-gradient(from 180deg, #10b981, #22d3ee, #10b981);
  filter: grayscale(0);
}

/* Label in wrapper (outside button) — always visible */
.nav__cta-wrap > .liquid-metal-btn__label,
.section-contact__submit-wrap > .liquid-metal-btn__label {
  max-width: none;
  overflow: visible;
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

.nav__cta-wrap:hover > .liquid-metal-btn__label,
.section-contact__submit-wrap:hover > .liquid-metal-btn__label {
  opacity: 1;
}