/* ==========================================================================
   Motion & Micro-Interaction CSS — ColorLab Premium UX Layer
   Linear / Framer / Vercel inspired motion principles:
   - Fast (200–350ms)
   - Spring-like easing
   - Purposeful (never decorative noise)
   ========================================================================== */

/* --------------------------------------------------------------------------
   GLOBAL EASING TOKENS
   -------------------------------------------------------------------------- */

:root {
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 180ms;
  --dur-base: 280ms;
  --dur-slow: 420ms;
}

/* --------------------------------------------------------------------------
   1. ICON SYSTEM — Inline SVG utilities
   -------------------------------------------------------------------------- */

.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: middle;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition:
    transform var(--dur-fast) var(--ease-spring),
    color var(--dur-fast) var(--ease-out);
}

/* Sizes */
.icon-sm {
  width: 16px;
  height: 16px;
}
.icon-md {
  width: 20px;
  height: 20px;
}
.icon-lg {
  width: 24px;
  height: 24px;
}
.icon-xl {
  width: 32px;
  height: 32px;
}

/* Icon in icon-box wrapper */
.icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: #f5f5f5;
  color: #555;
  transition:
    background var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out),
    transform var(--dur-fast) var(--ease-spring);
  flex-shrink: 0;
}

.icon-box.accent {
  background: #f0f4ff;
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   2. BUTTON MOTION — Tactile press feeling
   -------------------------------------------------------------------------- */

.btn {
  position: relative;
  overflow: hidden;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-spring),
    color var(--dur-fast) var(--ease-out);
}

.btn:active {
  transform: scale(0.97) translateY(1px);
}

.btn-primary:hover {
  transform: translateY(-1px);
}

/* Ripple effect on click */
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.08);
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease-out);
  border-radius: inherit;
  pointer-events: none;
}

.btn:hover::after {
  opacity: 1;
}

/* Icon inside button */
.btn .icon {
  transition: transform var(--dur-base) var(--ease-spring);
  margin-left: 0.35em;
}

.btn:hover .icon {
  transform: translateX(3px);
}

/* --------------------------------------------------------------------------
   3. CARD HOVER — Premium lift with shadow bloom
   -------------------------------------------------------------------------- */

.card,
.feature-card,
.service-card,
.testimonial-card,
.pricing-card {
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out);
  will-change: transform;
}

/* Icon box lifts with card */
.service-card:hover .icon-box,
.feature-card:hover .icon-box {
  background: #f0f4ff;
  color: var(--color-accent);
  transform: scale(1.08) rotate(-3deg);
}

/* --------------------------------------------------------------------------
   4. NAVIGATION MOTION
   -------------------------------------------------------------------------- */

/* Active nav highlight */
.nav-link.active {
  color: var(--color-text);
}

.nav-link.active::after {
  width: 100%;
}

/* Hamburger icon morph (mobile) */
.hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition:
    transform var(--dur-base) var(--ease-spring),
    opacity var(--dur-fast) var(--ease-out);
  transform-origin: center;
}

.nav-hamburger.open .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-hamburger.open .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-hamburger.open .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav animates with responsive.css — see responsive.css for full definition */

/* --------------------------------------------------------------------------
   5. FAQ ACCORDION — Smooth height animation using grid trick
   -------------------------------------------------------------------------- */

.faq-card {
  transition:
    box-shadow var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out);
}

.faq-content-wrapper {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-base) var(--ease-spring);
  overflow: hidden;
}

.faq-content-wrapper.open {
  grid-template-rows: 1fr;
}

.faq-content-inner {
  overflow: hidden;
  padding: 0 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.925rem;
  line-height: 1.75;
}

.faq-content-wrapper.open .faq-content-inner {
  padding: 0 1.5rem 1.5rem;
}

/* Icon rotation */
.faq-chevron {
  width: 18px;
  height: 18px;
  color: var(--color-text-light);
  flex-shrink: 0;
  transition:
    transform var(--dur-base) var(--ease-spring),
    color var(--dur-fast) var(--ease-out);
}

.faq-card.open .faq-chevron {
  transform: rotate(180deg);
  color: var(--color-text);
}

.faq-card.open .faq-header {
  border-bottom: 1px solid var(--color-border);
}

/* Remove old display:none approach */
.faq-content {
  display: block !important;
  padding: 0 !important;
  animation: none !important;
}

/* --------------------------------------------------------------------------
   6. SCROLL REVEAL — Entrance animations with stagger
   -------------------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-spring);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.reveal-delay-1 {
  transition-delay: 80ms;
}
.reveal-delay-2 {
  transition-delay: 160ms;
}
.reveal-delay-3 {
  transition-delay: 240ms;
}
.reveal-delay-4 {
  transition-delay: 320ms;
}

/* Horizontal variant */
.reveal-left {
  opacity: 0;
  transform: translateX(-20px);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-spring);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(20px);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-spring);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* --------------------------------------------------------------------------
   7. FORM — Animated focus states
   -------------------------------------------------------------------------- */

.form-control {
  transition:
    border-color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out);
}

/* Label animates up when input focused (floating label prep) */
.form-group {
  position: relative;
}

/* Input wrapper icon support */
.input-icon-wrapper {
  position: relative;
}

.input-icon-wrapper .icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  transition: color var(--dur-fast) var(--ease-out);
  pointer-events: none;
}

.input-icon-wrapper:focus-within .icon {
  color: var(--color-accent);
}

.input-icon-wrapper .form-control {
  padding-left: 2.75rem;
}

/* --------------------------------------------------------------------------
   8. HERO — Staggered entrance on load
   -------------------------------------------------------------------------- */

@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  animation: heroFadeUp var(--dur-slow) var(--ease-spring) 50ms both;
}

.hero-subtitle {
  animation: heroFadeUp var(--dur-slow) var(--ease-spring) 150ms both;
}

.hero-actions {
  animation: heroFadeUp var(--dur-slow) var(--ease-spring) 250ms both;
}

.hero-interactive {
  animation: heroFadeUp var(--dur-slow) var(--ease-spring) 350ms both;
}

.hero-visuals {
  animation: heroFadeUp var(--dur-slow) var(--ease-spring) 200ms both;
}

/* --------------------------------------------------------------------------
   9. COLOR BUTTON PICKER — Interactive feedback
   -------------------------------------------------------------------------- */

.color-btn {
  cursor: pointer;
  transition:
    transform var(--dur-fast) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-out);
}

.color-btn:hover {
  transform: scale(1.22);
}

.color-btn.active {
  transform: scale(1.18);
}

/* --------------------------------------------------------------------------
   9b. HERO VISUAL CARDS — Subtle float effect
   -------------------------------------------------------------------------- */

@keyframes heroFloat {
  0%,
  100% {
    transform: rotate(2.5deg) translateY(0px);
  }
  50% {
    transform: rotate(2.5deg) translateY(-6px);
  }
}

@keyframes heroFloat2 {
  0%,
  100% {
    transform: rotate(-3.5deg) translateY(0px);
  }
  50% {
    transform: rotate(-3.5deg) translateY(-5px);
  }
}

.hero-palette-card {
  animation: heroFloat 5s ease-in-out infinite;
}

.hero-ui-block {
  animation: heroFloat2 5.8s ease-in-out 0.4s infinite;
}

/* Pause float on hover so user can inspect */
.hero-palette-card:hover,
.hero-ui-block:hover {
  animation-play-state: paused;
}

/* --------------------------------------------------------------------------
   10. SECTION LABELS — Subtle entrance indicator
   -------------------------------------------------------------------------- */

.section-label {
  opacity: 0.8;
  letter-spacing: 0.1em;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.section-label:hover {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   11. TESTIMONIAL — Subtle quote pulse
   -------------------------------------------------------------------------- */

.testimonial-card::before {
  transition: opacity var(--dur-base) var(--ease-out);
}

.testimonial-card:hover::before {
  opacity: 0.1;
}

/* --------------------------------------------------------------------------
   12. STEP CARDS — Number accent reveal
   -------------------------------------------------------------------------- */

.step-card {
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-out);
}

.step-card:hover {
  transform: translateY(-4px);
}

.step-card:hover .step-number {
  opacity: 0.12;
  transition: opacity var(--dur-base) var(--ease-out);
}

/* --------------------------------------------------------------------------
   13. FOOTER LINK HOVER — Slide right
   -------------------------------------------------------------------------- */

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition:
    color var(--dur-fast) var(--ease-out),
    gap var(--dur-fast) var(--ease-spring);
}

.footer-links a:hover {
  gap: 0.5rem;
}

/* --------------------------------------------------------------------------
   14. PRICING CARD — Popular badge glow pulse
   -------------------------------------------------------------------------- */

@keyframes subtlePulse {
  0%,
  100% {
    box-shadow:
      0 0 0 0 rgba(124, 58, 237, 0),
      var(--shadow-hover);
  }
  50% {
    box-shadow:
      0 0 0 4px rgba(124, 58, 237, 0.08),
      var(--shadow-hover);
  }
}

.pricing-card.popular {
  animation: subtlePulse 3s var(--ease-in-out) infinite;
}

.pricing-card.popular:hover {
  animation: none;
}

/* --------------------------------------------------------------------------
   15. SCROLL PROGRESS BAR — Top edge indicator
   -------------------------------------------------------------------------- */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-pink));
  transform-origin: left;
  transform: scaleX(0);
  z-index: 200;
  transition: transform 60ms linear;
  pointer-events: none;
}

[dir="rtl"] .scroll-progress {
  transform-origin: right;
}

/* --------------------------------------------------------------------------
   16. BACK TO TOP BUTTON
   -------------------------------------------------------------------------- */

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-text);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0;
  transform: translateY(12px) scale(0.9);
  transition:
    opacity var(--dur-fast) var(--ease-out),
    transform var(--dur-base) var(--ease-spring);
  z-index: 150;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.back-to-top:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.back-to-top:active {
  transform: scale(0.95);
}

/* --------------------------------------------------------------------------
   17. MOBILE RESPONSIVENESS
   -------------------------------------------------------------------------- */

@media (max-width: 991px) {
  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    cursor: pointer;
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    transition: background var(--dur-fast) var(--ease-out);
  }

  .nav-hamburger:hover {
    background: var(--color-bg-alt);
  }
}

@media (min-width: 992px) {
  .nav-hamburger {
    display: none !important;
  }
  .mobile-nav {
    display: none !important;
  }
}