/* ============================================================
   animations.css  —  Premium Motion Design System
   All keyframes + animation utility classes live here.
   Respects prefers-reduced-motion throughout.
   ============================================================ */

/* =================== Scroll Progress Bar =================== */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, var(--link-color), var(--accent), var(--link-color));
    background-size: 200% 100%;
    animation: progressShimmer 2s linear infinite;
    z-index: 99999;
    transition: width 0.1s linear;
    border-radius: 0 99px 99px 0;
    box-shadow: 0 0 10px rgba(59,130,246,0.6);
}

@keyframes progressShimmer {
    0%   { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

/* =================== Mobile Nav Overlay =================== */
#nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 8500;
    opacity: 0;
    transition: opacity 0.35s ease;
}

#nav-overlay.active {
    display: block;
    opacity: 1;
}

/* =================== Page Loader =================== */
#page-loader {
    position: fixed;
    inset: 0;
    background: var(--bg-color);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#page-loader.loaded {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.loader-logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--link-color), var(--accent));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0;
    animation: loaderFadeIn 0.4s ease forwards 0.1s;
}

.loader-subtitle {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--muted);
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0;
    animation: loaderFadeIn 0.4s ease forwards 0.6s;
}

.loader-bar-wrap {
    width: 180px;
    height: 3px;
    background: var(--glass-border);
    border-radius: 999px;
    overflow: hidden;
    opacity: 0;
    animation: loaderFadeIn 0.4s ease forwards 0.3s;
}

.loader-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--link-color), var(--accent));
    border-radius: 999px;
    animation: loaderProgress 0.9s var(--ease-out-expo) forwards 0.4s;
}

@keyframes loaderFadeIn {
    to {
        opacity: 1;
    }
}

@keyframes loaderProgress {
    to {
        width: 100%;
    }
}

/* =================== Cursor Fireworks Canvas =================== */
#cursor-fx {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 99998;
}

/* Hide on touch devices */
@media (hover: none) {
    #cursor-fx {
        display: none;
    }
}


/* =================== Background Canvas =================== */
#bg-canvas {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0.65;
}

/* =================== Page-Load Hero Entrance =================== */
/* Applied via JS adding .page-ready to body */
.hero-left>* {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}

body.page-ready .hero-left .hero-title {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.15s;
}

body.page-ready .hero-left .typewriter {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.28s;
}

body.page-ready .hero-left .hero-sub {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.38s;
}

body.page-ready .hero-left .hero-cta {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.5s;
}

/* Hero right — scale-in entrance */
.hero-right {
    opacity: 0;
    transform: scale(0.88) translateY(20px);
    transition: opacity 0.9s var(--ease-out-expo), transform 0.9s var(--ease-out-expo);
    transition-delay: 0.3s;
}

body.page-ready .hero-right {
    opacity: 1;
    transform: scale(1) translateY(0);
}

/* Header entrance */
header {
    transform: translateY(-100%);
    transition: transform 0.6s var(--ease-out-expo), background 0.4s ease, box-shadow 0.4s ease;
}

body.page-ready header {
    transform: translateY(0);
    transition-delay: 0s;
}

/* Nav entrance stagger (desktop) */
@media (min-width: 769px) {
    nav a {
        opacity: 0;
        transform: translateY(-8px);
        transition: color 0.3s ease, background 0.3s ease,
            opacity 0.5s var(--ease-out-expo), transform 0.5s var(--ease-out-expo);
    }

    body.page-ready nav a:nth-child(1) {
        opacity: 1;
        transform: translateY(0);
        transition-delay: 0.55s;
    }

    body.page-ready nav a:nth-child(2) {
        opacity: 1;
        transform: translateY(0);
        transition-delay: 0.62s;
    }

    body.page-ready nav a:nth-child(3) {
        opacity: 1;
        transform: translateY(0);
        transition-delay: 0.69s;
    }

    body.page-ready nav a:nth-child(4) {
        opacity: 1;
        transform: translateY(0);
        transition-delay: 0.76s;
    }

    body.page-ready nav a:nth-child(5) {
        opacity: 1;
        transform: translateY(0);
        transition-delay: 0.83s;
    }

    body.page-ready nav #toggleTheme {
        opacity: 1;
        transition-delay: 0.9s;
    }

    nav #toggleTheme {
        opacity: 0;
        transition: all 0.3s ease, opacity 0.5s var(--ease-out-expo);
    }
}

/* =================== Navbar — Active Link =================== */
nav a {
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 70%;
    height: 2px;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--link-color), var(--accent));
    transition: transform 0.35s var(--ease-out-expo);
}

nav a:hover::after,
nav a.nav-active::after {
    transform: translateX(-50%) scaleX(1);
}

nav a.nav-active {
    color: var(--link-color) !important;
}

/* =================== Scroll-Triggered Reveal Variants =================== */
/* Base state — JS adds .in-view */
[data-reveal] {
    will-change: transform, opacity;
}

[data-reveal="fade"] {
    opacity: 0;
    transition: opacity 0.75s var(--ease-out-expo);
}

[data-reveal="slide-up"] {
    opacity: 0;
    transform: translateY(36px);
    transition: opacity 0.75s var(--ease-out-expo), transform 0.75s var(--ease-out-expo);
}

[data-reveal="slide-left"] {
    opacity: 0;
    transform: translateX(-44px);
    transition: opacity 0.75s var(--ease-out-expo), transform 0.75s var(--ease-out-expo);
}

[data-reveal="slide-right"] {
    opacity: 0;
    transform: translateX(44px);
    transition: opacity 0.75s var(--ease-out-expo), transform 0.75s var(--ease-out-expo);
}

[data-reveal="scale-in"] {
    opacity: 0;
    transform: scale(0.88);
    transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}

[data-reveal="zoom-fade"] {
    opacity: 0;
    transform: scale(0.94) translateY(20px);
    transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}

/* Revealed state */
[data-reveal].in-view {
    opacity: 1;
    transform: none;
}

/* Stagger delays for child items */
[data-stagger]>*:nth-child(1) {
    transition-delay: calc(0 * var(--stagger-step, 0.08s));
}

[data-stagger]>*:nth-child(2) {
    transition-delay: calc(1 * var(--stagger-step, 0.08s));
}

[data-stagger]>*:nth-child(3) {
    transition-delay: calc(2 * var(--stagger-step, 0.08s));
}

[data-stagger]>*:nth-child(4) {
    transition-delay: calc(3 * var(--stagger-step, 0.08s));
}

[data-stagger]>*:nth-child(5) {
    transition-delay: calc(4 * var(--stagger-step, 0.08s));
}

[data-stagger]>*:nth-child(6) {
    transition-delay: calc(5 * var(--stagger-step, 0.08s));
}

[data-stagger]>*:nth-child(7) {
    transition-delay: calc(6 * var(--stagger-step, 0.08s));
}

[data-stagger]>*:nth-child(8) {
    transition-delay: calc(7 * var(--stagger-step, 0.08s));
}

[data-stagger]>*:nth-child(9) {
    transition-delay: calc(8 * var(--stagger-step, 0.08s));
}

[data-stagger]>*:nth-child(10) {
    transition-delay: calc(9 * var(--stagger-step, 0.08s));
}

[data-stagger]>*:nth-child(11) {
    transition-delay: calc(10 * var(--stagger-step, 0.08s));
}

[data-stagger]>*:nth-child(12) {
    transition-delay: calc(11 * var(--stagger-step, 0.08s));
}

/* =================== Header scroll state =================== */
header.scrolled {
    background: var(--header-bg);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.18);
    padding: 0.7rem 2rem;
}

/* =================== Hero — Gradient light blobs =================== */
.hero {
    position: relative;
    overflow: hidden;
}

.hero-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    will-change: transform;
}

.hero-blob-1 {
    width: 520px;
    height: 520px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.12), transparent 70%);
    top: -15%;
    left: -10%;
    animation: blobDrift1 14s ease-in-out infinite;
}

.hero-blob-2 {
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1), transparent 70%);
    bottom: 10%;
    right: 5%;
    animation: blobDrift2 11s ease-in-out infinite;
}

@keyframes blobDrift1 {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -20px) scale(1.05);
    }

    66% {
        transform: translate(-20px, 30px) scale(0.97);
    }
}

@keyframes blobDrift2 {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    40% {
        transform: translate(-25px, 20px) scale(1.06);
    }

    70% {
        transform: translate(20px, -15px) scale(0.96);
    }
}

/* =================== Robot wrap parallax float =================== */
@keyframes heroFloat {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-14px);
    }
}

/* Float applied to img so JS parallax on .robot-wrap doesn't conflict */
#robot-gif {
    animation: heroFloat 6s ease-in-out infinite;
}

/* Override the section-level animation that was set in sections.css */
.robot-wrap {
    animation: pulseGlow 4s ease-in-out infinite !important;
}

/* =================== Section heading reveal accent line =================== */
section h3 {
    position: relative;
    /* Keep existing text-align: center from sections.css; no positional override needed */
}

section h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    transform-origin: center;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--link-color), var(--accent));
    border-radius: 99px;
    transition: transform 0.55s var(--ease-out-expo) 0.2s;
}

section h3.in-view::after {
    transform: translateX(-50%) scaleX(1);
}

/* =================== Project cards — glow border on hover =================== */
.project-card {
    --glow-opacity: 0;
    transition: var(--transition-smooth), --glow-opacity 0.4s ease;
}

.project-card::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.4), rgba(16, 185, 129, 0.3));
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.project-card:hover::after {
    opacity: 1;
}

/* =================== Skill icon shimmer =================== */
@keyframes iconShimmer {
    0% {
        background-position: -200% center;
    }

    100% {
        background-position: 200% center;
    }
}

.skills-logos a:focus-visible .icon-wrapper,
.skills-logos a:hover .icon-wrapper {
    background: linear-gradient(90deg,
            rgba(59, 130, 246, 0.08) 0%,
            rgba(59, 130, 246, 0.18) 50%,
            rgba(59, 130, 246, 0.08) 100%);
    background-size: 200% auto;
    animation: iconShimmer 1.2s linear forwards;
}

/* =================== Contact form input micro-interaction =================== */
.form-group {
    position: relative;
}

.form-group::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1.2rem;
    right: 1.2rem;
    height: 2px;
    background: linear-gradient(90deg, var(--link-color), var(--accent));
    border-radius: 99px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease-out-expo);
}

.form-group:focus-within::after {
    transform: scaleX(1);
}

/* =================== Mobile menu — slide in items =================== */
@media (max-width: 768px) {
    nav a {
        opacity: 0;
        transform: translateX(24px);
        transition: color 0.3s ease, background 0.3s ease,
            opacity 0.4s var(--ease-out-expo), transform 0.4s var(--ease-out-expo),
            border-bottom 0.3s ease;
    }

    nav.open a {
        opacity: 1;
        transform: translateX(0);
    }

    nav.open a:nth-child(1) {
        transition-delay: 0.08s;
    }

    nav.open a:nth-child(2) {
        transition-delay: 0.14s;
    }

    nav.open a:nth-child(3) {
        transition-delay: 0.20s;
    }

    nav.open a:nth-child(4) {
        transition-delay: 0.26s;
    }

    nav.open a:nth-child(5) {
        transition-delay: 0.32s;
    }

    nav.open #toggleTheme {
        opacity: 1;
        transition-delay: 0.38s;
    }

    nav #toggleTheme {
        opacity: 0;
        transition: all 0.3s ease, opacity 0.4s var(--ease-out-expo);
    }
}

/* =================== Hamburger to X morph =================== */
#menuToggle {
    transition: transform 0.3s var(--ease-out-expo), background 0.3s ease;
}

#menuToggle:hover {
    transform: scale(1.08);
}

/* =================== Social links glow =================== */
.social-links-wrap a {
    position: relative;
    overflow: hidden;
}

.social-links-wrap a::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2), transparent 70%);
    opacity: 0;
    transform: scale(0.5);
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.social-links-wrap a:hover::before {
    opacity: 1;
    transform: scale(1.5);
}

/* =================== Footer links slide =================== */
.footer-col.links a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.footer-col.links a::before {
    content: '→';
    opacity: 0;
    transform: translateX(-8px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    font-size: 0.85rem;
    color: var(--link-color);
}

.footer-col.links a:hover::before {
    opacity: 1;
    transform: translateX(0);
}

/* =================== About photo subtle parallax wrapper =================== */
.about-left {
    overflow: visible;
    display: flex;
    justify-content: center;
}

/* =================== Info item hover =================== */
.info-item {
    border-radius: 12px;
    padding: 0.6rem 0.8rem;
    margin-left: -0.8rem;
    transition: background 0.3s ease;
}

.info-item:hover {
    background: rgba(59, 130, 246, 0.06);
}

/* =================== Reduced motion override =================== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    [data-reveal],
    .hero-left>*,
    .hero-right,
    nav a {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }

    header {
        transform: none !important;
    }

    #cursor-fx,
    #page-loader,
    #bg-canvas {
        display: none !important;
    }

    .hero-blob {
        display: none;
    }

    .typewriter::after {
        display: none !important;
    }
}