/* ============================================================
   PREMIUM ANIMATIONS & TRANSITIONS (2026 EDITION)
   Professional micro-interactions and scroll-triggered effects
   ============================================================ */

/* ── Advanced Keyframe Animations ── */

/* Text reveal animation (character by character) */
@keyframes textReveal {
  0% {
    opacity: 0;
    transform: translateX(-30px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Smooth fade and scale up */
@keyframes fadeScaleUp {
  0% {
    opacity: 0;
    transform: scale(0.92);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Slide up with fade */
@keyframes slideUpFade {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Slide left with fade */
@keyframes slideLeftFade {
  0% {
    opacity: 0;
    transform: translateX(-40px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Slide right with fade */
@keyframes slideRightFade {
  0% {
    opacity: 0;
    transform: translateX(40px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Bounce entrance */
@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    transform: scale(1);
  }
}

/* Subtle pulse glow */
@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(37, 99, 235, 0);
  }
}

/* Text gradient shift */
@keyframes gradientShift {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

/* Smooth shimmer */
@keyframes smoothShimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* Floating animation */
@keyframes floatUp {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-15px);
  }
}

/* Subtle rotate animation */
@keyframes gentleRotate {
  0%,
  100% {
    transform: rotate(0deg);
  }
  50% {
    transform: rotate(3deg);
  }
}

/* Expanded glow pulse */
@keyframes expandGlow {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(37, 99, 235, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
  }
}

/* ── Scroll-Reveal Classes ── */

/* Base state - hidden */
.animate-hidden {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Revealed state */
.animate-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered reveal for elements */
.card.animate-hidden,
.project-card.animate-hidden,
.skill-category.animate-hidden,
.service-card.animate-hidden,
.timeline-item.animate-hidden {
  animation: slideUpFade 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Left column reveal */
.about-col-1.animate-hidden {
  animation: slideLeftFade 0.9s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Right column reveal */
.about-col-2.animate-hidden {
  animation: slideRightFade 0.9s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* ── Enhanced Button Micro-Interactions ── */

.btn,
.btn-link,
.btn-resume-premium {
  position: relative;
  overflow: visible;
}

/* Button ripple effect */
.btn::after,
.btn-link::after,
.btn-resume-premium::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.btn:active::after,
.btn-link:active::after,
.btn-resume-premium:active::after {
  animation: ripple 0.6s ease-out;
}

@keyframes ripple {
  0% {
    width: 0;
    height: 0;
    opacity: 1;
  }
  100% {
    width: 300px;
    height: 300px;
    opacity: 0;
  }
}

/* Enhanced button hover scale */
.btn:hover,
.btn-link:hover {
  animation: buttonBounce 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes buttonBounce {
  0% {
    transform: translateY(-4px);
  }
  50% {
    transform: translateY(-8px);
  }
  100% {
    transform: translateY(-4px);
  }
}

/* ── Card Hover Enhancements ── */

.compact-project-card,
.card,
.service-card,
.work {
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Subtle background glow on card hover */
.compact-project-card::before,
.card::before,
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.compact-project-card:hover::before,
.card:hover::before,
.service-card:hover::before {
  left: 100%;
}

/* Card shadow enhancement on hover */
.compact-project-card:hover,
.card:hover,
.service-card:hover {
  box-shadow: 0 20px 50px rgba(37, 99, 235, 0.2),
              0 0 40px rgba(37, 99, 235, 0.1) !important;
}

/* ── Navigation Link Enhancements ── */

nav#main-nav ul li a {
  position: relative;
}

/* Underline animation with easing */
nav#main-nav ul li a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--rg);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

nav#main-nav ul li a:hover::before {
  transform: scaleX(1);
}

/* ── Section Title Animations ── */

.sub-title {
  position: relative;
  animation: slideUpFade 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.section-title {
  animation: slideUpFade 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.sub-title::after,
.section-title::after {
  animation: slideLeftFade 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

/* ── Form Input Animations ── */

input,
textarea {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

input:focus,
textarea:focus {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.15) !important;
}

/* ── Image Hover Effects ── */

img {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-col-1 img {
  animation: imageReveal 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes imageReveal {
  0% {
    opacity: 0;
    transform: scale(0.95) translateY(20px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* ── Link Hover Effects ── */

a {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

a:not(.btn):not(.btn-link):not(.btn-resume-premium):not(.nav-link):not(.nav-magnetic):not(.timeline-link),
.tab-links {
  position: relative;
}

a:not(.btn):not(.btn-link):not(.btn-resume-premium):not(.nav-link):not(.nav-magnetic):not(.timeline-link)::after,
.tab-links::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--rg);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

a:not(.btn):not(.btn-link):not(.btn-resume-premium):not(.nav-link):not(.nav-magnetic):not(.timeline-link):hover::after,
.tab-links:hover::after {
  transform: scaleX(1);
}

/* ── Timeline Animations ── */

.timeline-item {
  animation: slideUpFade 0.8s cubic-bezier(0.4, 0, 0.2, 1) backwards;
}

.timeline-item:nth-child(odd) {
  animation-delay: 0s;
}

.timeline-item:nth-child(even) {
  animation-delay: 0.15s;
}

.timeline-item:hover {
  transform: translateY(-8px);
}

.timeline-link {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-link:hover .timeline-content {
  transform: scale(1.03);
}

/* ── Scroll Progress Indicator ── */

.scroll-progress-bar {
  animation: progressLoad 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes progressLoad {
  0% {
    width: 0%;
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

/* ── Tab Animation ── */

.tab-contents {
  animation: fadeScaleUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Text Gradient Animation for Headings ── */

h1,
h2,
h3 {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Skill Category Stagger ── */

.skill-category {
  animation: slideUpFade 0.7s cubic-bezier(0.4, 0, 0.2, 1) backwards;
}

.skill-category:nth-child(1) {
  animation-delay: 0s;
}

.skill-category:nth-child(2) {
  animation-delay: 0.1s;
}

.skill-category:nth-child(3) {
  animation-delay: 0.2s;
}

.skill-category:nth-child(4) {
  animation-delay: 0.3s;
}

.skill-category:nth-child(5) {
  animation-delay: 0.4s;
}

/* ── Enhanced Loading States ── */

.btn:disabled,
button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ── Smooth Transition Defaults ── */

* {
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Mobile-Optimized Animations ── */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 768px) {
  .animate-hidden {
    animation: slideUpFade 0.6s cubic-bezier(0.4, 0, 0.2, 1) !important;
  }

  .card.animate-hidden,
  .project-card.animate-hidden {
    animation: slideUpFade 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards !important;
  }

  .about-col-1.animate-hidden {
    animation: slideUpFade 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards !important;
    transform: none;
  }

  .about-col-2.animate-hidden {
    animation: slideUpFade 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards !important;
    transform: none;
  }

  .btn:hover,
  .btn-link:hover {
    animation: none;
    transform: translateY(-2px);
  }

  .compact-project-card:hover,
  .card:hover,
  .service-card:hover {
    transform: translateY(-3px);
  }
}

/* ── Accessibility & Performance ── */

/* Reduce animation for users who prefer less motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::after,
  *::before {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ── Enhanced Glassmorphism Transitions ── */

nav#main-nav,
.nav-pills,
.menu-item {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Optional: Hero Text Character Animation ── */

@keyframes charPop {
  0% {
    opacity: 0;
    transform: translate(-20px, 20px) scale(0.5);
  }
  100% {
    opacity: 1;
    transform: translate(0, 0) scale(1);
  }
}

.char {
  display: inline-block;
  animation: charPop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Badge & Accent Animations ── */

.role-badge,
.badge,
[class*="badge"] {
  animation: slideUpFade 0.7s cubic-bezier(0.4, 0, 0.2, 1) 0.1s both;
}

/* ── Enhanced Work/Project Hover States ── */

.work-hover-effect {
  position: relative;
  overflow: hidden;
}

.work-hover-effect::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.work-hover-effect:hover::after {
  left: 100%;
}

/* ── Smooth Color Transitions ── */

.btn,
.btn-link,
.btn-resume-premium,
a[class*="btn"] {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform, background-color, box-shadow;
}

/* Performance optimization */
.card,
.compact-project-card,
.service-card {
  will-change: transform;
}

img {
  will-change: transform;
}