/* ================================================================
   MICROINTERACTIONS.CSS
   Subtle, elegant motion for every interactive element.
   Philosophy: motion should feel physical, not decorative.
   All animations respect prefers-reduced-motion.
================================================================ */

/* ── GLOBAL EASING CURVES ─────────────────────────────────── */
:root {
  --ease-bounce:   cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth:   cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-sharp:    cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out:      cubic-bezier(0, 0, 0.2, 1);
}


/* ================================================================
   WORK CARDS — lift + border glow + image zoom + arrow reveal
================================================================ */
.work-card {
  transition: transform 0.30s var(--ease-smooth), border-color 0.25s var(--ease-sharp), box-shadow 0.30s var(--ease-smooth);;
  will-change: transform;
}

.work-card:not(.work-card--locked):hover {
  transform: translateY(-1px) scale(1.005);
}

.work-card:not(.work-card--locked):active {
  transform: translateY(-2px) scale(1.002);
  transition-duration: 0.12s;
}

/* Thumb image scale on hover */
.work-card__thumb {
  overflow: hidden;
}
.work-card__thumb img {
  transition: transform 0.55s var(--ease-smooth);
}
.work-card:not(.work-card--locked):hover .work-card__thumb img {
  transform: scale(1.01);
}

/* Arrow slides in from below-right */
.work-card__arrow {
  opacity: 0;
  display: none;
  transform: translate(4px, 4px);
  transition: opacity 0.22s var(--ease-out), transform 0.22s var(--ease-out);;
}
.work-card:not(.work-card--locked):hover .work-card__arrow {
  opacity: 1;
  transform: translate(0, 0);
}

/* Tag colour shift on hover */
.work-card:not(.work-card--locked):hover .work-card__tag {
  color: var(--gold-light);
  transition: color 0.22s;
}

/* Title nudge on hover */
.work-card:not(.work-card--locked):hover .work-card__title {
  color: #FD2E35;
  transition: color 0.22s;
}


/* ================================================================
   BUTTONS — press feedback + glow pulse
================================================================ */
.btn-primary {
  transition: transform 0.18s var(--ease-bounce), box-shadow 0.22s var(--ease-smooth), background 0.22s var(--ease-sharp);;
  position: relative;
  overflow: hidden;
}

/* Ripple on click */
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.15);
  border-radius: inherit;
  opacity: 0;
  transform: scale(0.85);
  transition: opacity 0.3s, transform 0.3s;
}
.btn-primary:active::after {
  opacity: 1;
  transform: scale(1);
  transition-duration: 0.08s;
}
.btn-primary:hover {
  transform: translateY(0px) scale(1.0);
}
.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-secondary {
  transition: transform 0.18s var(--ease-bounce), border-color 0.22s var(--ease-sharp), color 0.22s var(--ease-sharp), background 0.22s var(--ease-sharp);;
}
.btn-secondary:hover {
  transform: translateY(0px) scale(1.0);
}
.btn-secondary:active {
  transform: translateY(0) scale(0.98);
}

/* SVG arrow inside buttons slides right on hover */
.btn-primary svg,
.btn-secondary svg {
  transition: transform 0.22s var(--ease-smooth);
}
.btn-primary:hover svg,
.btn-secondary:hover svg {
  transform: translateX(3px);
}


/* ================================================================
   FILTER BUTTONS — press scale + colour fill
================================================================ */
.filter-btn {
  transition: background 0.20s var(--ease-sharp), border-color 0.20s var(--ease-sharp), color 0.20s var(--ease-sharp), transform 0.15s var(--ease-bounce), box-shadow 0.20s;;
}
.filter-btn:hover {
  transform: translateY(0px);
}
.filter-btn:active {
  transform: scale(1);
}


/* Navigation links — colour only on hover/active, no underline */
.nav-link { transition: color 0.20s; }


/* ================================================================
   SKILL CARDS — lift + icon colour pop
================================================================ */
.skill-card {
  transition: transform 0.25s var(--ease-smooth), border-color 0.22s var(--ease-sharp), box-shadow 0.25s var(--ease-smooth);;
  will-change: transform;
}
.skill-card:hover {
  transform: translateY(-4px);
}
.skill-card:active {
  transform: translateY(0px);
}

.skill-card__icon {
  transition: background 0.22s, transform 0.25s var(--ease-bounce);;
}
.skill-card:hover .skill-card__icon {
  /* background: var(--gold-border); */
  transform: scale(1.12) rotate(-4deg);
}

/* Tags slide-pop on card hover */
.skill-tag {
  transition: border-color 0.20s, color 0.20s, transform 0.20s var(--ease-smooth);;
}
.skill-card:hover .skill-tag {
  border-color: var(--gold-border);
  color: var(--text-primary);
}


/* ================================================================
   TOOL ITEMS — bounce lift
================================================================ */
.tool-item {
  transition: transform 0.22s var(--ease-bounce), border-color 0.20s, box-shadow 0.22s;;
}
.tool-item:hover {
  transform: translateY(-3px) scale(1.03);
}
.tool-item:active {
  transform: translateY(-1px) scale(1.01);
}
.tool-item img {
  transition: transform 0.22s var(--ease-bounce);
}
.tool-item:hover img {
  transform: scale(1.10);
}


/* ================================================================
   CONTACT ITEMS — slide-border on hover
================================================================ */
.contact-item {
  transition: border-color 0.22s, box-shadow 0.22s, transform 0.20s var(--ease-smooth);;
}
.contact-item:hover {
  transform: translateY(-2px);
}

.contact-item a {
  transition: color 0.18s, letter-spacing 0.18s;
}
.contact-item:hover a {
  letter-spacing: 0.015em;
}


/* ================================================================
   TIMELINE DOTS — pulse on scroll-reveal
================================================================ */
.timeline-dot {
  transition: box-shadow 0.30s;
}
.timeline-item.visible .timeline-dot {
  animation: dotAppear 0.5s var(--ease-bounce) both;
}
@keyframes dotAppear {
  0%   { transform: scale(0); opacity: 0; }
  60%  { transform: scale(1.3); }
  100% { transform: scale(1); opacity: 1; }
}

/* Timeline list items stagger in */
.timeline-item.visible .timeline-resp li {
  animation: fadeSlideIn 0.4s var(--ease-out) both;
}
.timeline-item.visible .timeline-resp li:nth-child(1) { animation-delay: 0.05s; }
.timeline-item.visible .timeline-resp li:nth-child(2) { animation-delay: 0.10s; }
.timeline-item.visible .timeline-resp li:nth-child(3) { animation-delay: 0.15s; }
.timeline-item.visible .timeline-resp li:nth-child(4) { animation-delay: 0.20s; }
.timeline-item.visible .timeline-resp li:nth-child(5) { animation-delay: 0.25s; }
.timeline-item.visible .timeline-resp li:nth-child(6) { animation-delay: 0.30s; }
.timeline-item.visible .timeline-resp li:nth-child(7) { animation-delay: 0.35s; }
.timeline-item.visible .timeline-resp li:nth-child(8) { animation-delay: 0.40s; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}


/* ================================================================
   HERO BADGE — subtle hover glow
================================================================ */
.hero-badge {
  transition: background var(--transition), border-color 0.22s, box-shadow 0.22s;;
}
.hero-badge:hover {
  box-shadow: 0 0 8px var(--green-glow);
  border-color: var(--green);
}


/* ================================================================
   PILLS — hover colour fill
================================================================ */
.pill {
  transition: border-color 0.20s, color 0.20s, background 0.20s, transform 0.18s var(--ease-bounce);;
}
.pill:hover {
  transform: scale(1.04);
}


/* ================================================================
   LOGO — subtle scale on hover
================================================================ */
.nav-logo img {
  transition: opacity 0.20s, transform 0.22s var(--ease-smooth);
}
.nav-logo:hover img {
  opacity: 0.80;
  transform: scale(1.04);
}


/* ================================================================
   THEME TOGGLE BUTTON
================================================================ */
.toggle-btn {
  transition: background 0.22s var(--ease-sharp), transform 0.18s var(--ease-bounce);;
}
.toggle-btn:hover {
  transform: scale(1.12) rotate(8deg);
}
.toggle-btn:active {
  transform: scale(0.94);
}


/* ================================================================
   SECTION HEADERS — label line grows on scroll-reveal
================================================================ */
.section-label::before {
  transition: width 0.5s var(--ease-smooth);
}
.section-header.visible .section-label::before {
  animation: lineGrow 0.6s var(--ease-smooth) both;
}
@keyframes lineGrow {
  from { width: 0; }
  to   { width: 22px; }
}


/* ================================================================
   ABOUT PHOTO — parallax-style subtle float
================================================================ */
.about-photo img {
  transition: transform 0.40s var(--ease-smooth);
}
.about-photo:hover img {
  transform: scale(1.02) translateY(-4px);
}


/* ================================================================
   HERO STAT BAR NUMBERS — count-up feel on reveal
================================================================ */
.hero-stat-bar {
  transition: box-shadow 0.30s;
}
.hero-photo:hover .hero-stat-bar {
  box-shadow: 0 2px 4px rgba(0,0,0,0.16), 0 8px 24px rgba(0,0,0,0.12), 0 18px 44px rgba(0,0,0,0.08);
}


/* ================================================================
   SCROLL PROGRESS INDICATOR — hidden per design spec
================================================================ */
.scroll-progress {
  display: none; /* removed */
}


/* ================================================================
   BACK TO TOP BUTTON
   Floating icon, bottom-right corner.
   Appears after user scrolls past the first fold.
================================================================ */
.back-to-top {
  position:      fixed;
  bottom:        28px;
  right:         28px;
  z-index:       90;
  width:         44px;
  height:        44px;
  border-radius: 100px;
  border:        1px solid var(--border-card);
  background:    var(--bg-card);
  backdrop-filter:         blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  box-shadow:    0 2px 6px  rgba(0, 0, 0, 0.20),
                 0 0 0 1px rgba(255,255,255,0.06) inset;
  display:       flex;
  align-items:   center;
  justify-content: center;
  cursor:        pointer;
  color:         var(--gold);

  /* Hidden by default — revealed with JS .visible class */
  opacity:    0;
  transform:  translateY(16px) scale(0.85);
  pointer-events: none;
  transition: opacity 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), background var(--fast), border-color var(--fast), box-shadow var(--fast);;
}

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

.back-to-top:hover {
  background:   var(--gold-dim);
  border-color: var(--gold-border);
  box-shadow:   0 6px 28px rgba(0, 0, 0, 0.40),
                0 0 16px rgba(212,144,10,0.16);
  transform:    translateY(-3px) scale(1.05);
}

.back-to-top:active {
  transform:  translateY(0) scale(0.96);
}

.back-to-top svg {
  width:  18px;
  height: 18px;
  stroke: var(--gold);
  fill:   none;
  stroke-width: 2.2;
  stroke-linecap:  round;
  stroke-linejoin: round;
  transition: stroke var(--fast), transform 0.22s;
}
.back-to-top:hover svg {
  transform: translateY(-1px);
}

[data-theme="light"] .back-to-top {
  background:   rgba(255, 253, 248, 0.85);
  border-color: rgba(201, 136, 0, 0.20);
  box-shadow:   0 4px 16px rgba(0,0,0,0.12);
  color:        var(--gold);
}
[data-theme="light"] .back-to-top svg {
  stroke: var(--gold);
}

@media (max-width: 600px) {
  .back-to-top { bottom: 20px; right: 16px; width: 40px; height: 40px; }
}


/* ================================================================
   REDUCED MOTION — disable all non-essential animation
================================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .work-card:not(.work-card--locked):hover { transform: none; }
  .btn-primary:hover, .btn-secondary:hover { transform: none; }
  .skill-card:hover, .tool-item:hover      { transform: none; }
}