:root {
    --background: #16201D;
    --cards: #1d2924;
    --primary: #00D9D9;
    --accent: #4FE9E9;
    --text: #F8FAFC;
    --muted: #94A3B8;
    --surface: #16201D;
    --glass: rgba(0,217,217,0.06);
    --shadow: rgba(22,32,29,0.6);
    --radius: 12px;
    --container-width: 1100px;
    --card-width: 340px;
    --max-width: 1100px;
    --header-height: 72px;
    --footer-height: 72px;
    --gap: 24px;
    --transition-fast: 180ms;
    --transition-medium: 320ms;
    --transition-slow: 420ms;
    --step: calc((var(--card-width) + var(--gap)) / 2);
}

/* Reset & base */
* { box-sizing: border-box; }
html,body{ height:100%; }
html {
    scroll-behavior: smooth; /* This line remains unchanged */
}
body{
    margin:0;
    background: var(--background);
    color:var(--text);
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
    line-height:1.5;
    padding: calc(var(--header-height) + 20px) 20px calc(var(--footer-height) + 20px);
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.65s ease, transform 0.65s ease;
    will-change: opacity, transform;
}

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

.container{
    max-width: var(--container-width);
    margin: 0 auto;
}

/* Links */
a{
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover{
    color: var(--accent);
}

/* Header */
header{
    position: fixed;
    top: 12px;
    left: 0;
    right: 0;
    z-index: 60;
    display: flex;
    justify-content: center;
    pointer-events: none;
}

nav{
    display: flex;
    gap: 16px;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(6px);
    background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
    padding: 10px 16px;
    border-radius: 999px;
    box-shadow: 0 6px 20px var(--shadow);
    pointer-events: auto;
    margin: 0 20px;
    max-width: var(--container-width);
}

nav a{
    color: var(--muted);
    padding: 8px 12px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
}

nav a:first-child{
    color: var(--text);
}

nav a:hover{
    color: var(--text);
    background: var(--glass);
}

/* Hero */
.hero{
    margin: 48px auto 32px;
    text-align: center;
    max-width: var(--max-width);
    padding: 0 12px;
}

/* Section panels */
.about,
.skills,
.contact{
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 30px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.16);
    padding: 40px 28px;
    margin: 0 auto 36px;
    max-width: var(--max-width);
}

.about{
    padding-top: 42px;
}

.hero-title h1{
    margin: 0;
    font-size: clamp(2.4rem, 4vw, 3.8rem);
    letter-spacing: -0.02em;
    max-width: 12ch;
    margin-inline: auto;
}

.hero-subtitle h2{
    margin: 16px auto 0;
    font-weight: 600;
    color: var(--muted);
    font-size: 1.05rem;
    max-width: 46ch;
    line-height: 1.8;
}

.hero p{
    margin: 24px auto 0;
    color: var(--text);
    max-width: 68ch;
    font-size: 1rem;
    line-height: 1.8;
}

/* Carousel */
.carousel-wrapper {
    position: relative;
    width: min(100%, calc(var(--card-width) * 3 + var(--gap)));
    max-width: 100%;
    margin: 0 auto;
    display: block;
    overflow: hidden;
}

/* Featured projects - horizontal scroll with snap */
.featured-projects-container{
    display: flex;
    gap: var(--gap);
    padding: 28px 8px;
    margin: 28px auto 0;
    overflow: visible;
    position: relative;
    width: 100%;
    max-width: calc(var(--card-width) * 3 + var(--gap));
    align-items: stretch;
    will-change: transform;
}

/* Left/right walls to hide part of outer cards while showing a half-peek */
.carousel-wrapper::before,
.carousel-wrapper::after{
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    width: calc(var(--step) * 1.5);
    pointer-events: none;
    z-index: 30;
}
.carousel-wrapper::before{
    left: 0;
    background: linear-gradient(90deg, var(--background) 50%, rgba(0,0,0,0));
}
.carousel-wrapper::after{
    right: 0;
    background: linear-gradient(270deg, var(--background) 50%, rgba(0,0,0,0));
}

.featured-project{
    flex: 0 0 var(--card-width);
    width: var(--card-width);
    background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent), var(--cards);
    border-radius: var(--radius);
    padding: 18px;
    scroll-snap-align: center;
    box-shadow: 0 8px 30px rgba(2,6,23,0.5);
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: 12px;
    /* use variables so hover can add vertical translate without losing horizontal translate */
    --tx: 0px;
    --ty: 0px;
    --scale: 0.98;
    transform: translateX(var(--tx)) translateY(var(--ty)) scale(var(--scale));
    transition: transform var(--transition-medium) cubic-bezier(0.2,0.9,0.3,1), box-shadow var(--transition-fast) ease, opacity var(--transition-medium) ease;
    will-change: transform, opacity;
    opacity: 0; /* will fade in when mounted */
}

.featured-project:hover{
    --ty: -6px;
    --scale: 1.06;
    box-shadow: 0 18px 50px rgba(2,6,23,0.65);
}

/* mounted state: use JS-managed classes for smooth fades and no nth-child jumps */
.featured-projects-container.mounted .featured-project.is-hidden{
    opacity: 0;
    transform: translateY(0) scale(0.96);
    pointer-events: none;
}

.featured-projects-container.mounted .featured-project.is-side{
    opacity: 0.65;
    transform: translateY(0) scale(0.98);
}

.featured-projects-container.mounted .featured-project.is-center{
    opacity: 1;
    transform: translateY(0) scale(1.03);
    z-index: 20;
}

/* Role-based sliding positions (translateX) + fades -- driven by variables */
.featured-project.role-center{
    /* center card: shift left by one step so it sits in wrapper center */
    --tx: calc(-1 * var(--step));
    --scale: 1.03;
    opacity: 1;
    z-index: 20;
}

.featured-project.role-left{
    /* left card: nudge right so its right half peeks */
    --tx: calc(1 * var(--step));
    --scale: 0.98;
    opacity: 0.65;
    z-index: 10;
}

.featured-project.role-right{
    /* right card: push further left so it sits half-peek on right */
    --tx: calc(-3 * var(--step));
    --scale: 0.98;
    opacity: 0.65;
    z-index: 10;
}

.featured-project.role-hidden-left{
    /* far right off-screen */
    --tx: calc(3 * var(--step));
    --scale: 0.96;
    opacity: 0;
    pointer-events: none;
}

.featured-project.role-hidden-right{
    /* far left off-screen */
    --tx: calc(-5 * var(--step));
    --scale: 0.96;
    opacity: 0;
    pointer-events: none;
}

.featured-project img{
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 10px;
    background: linear-gradient(90deg,#0000, rgba(0,0,0,0.08));
}

.featured-project-info h2{
    margin: 8px 0 6px;
    font-size: 1.05rem;
}

.featured-project-info p{
    margin: 6px 0 10px;
    color: var(--muted);
    font-size: 0.95rem;
}

.featured-project-tags ul{
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    padding: 0;
    margin: 0 0 8px 0;
    list-style: none;
}

.featured-project-tags li{
    font-size: 0.75rem;
    color: var(--muted);
    background: transparent;
    padding: 6px 8px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.03);
}

.view-github{
    display: flex;
    justify-content: flex-end;
}

.view-github-btn{
    background: linear-gradient(90deg,var(--primary), var(--accent));
    color: white;
    padding: 8px 12px;
    border-radius: 10px;
    font-weight: 700;
    box-shadow: 0 6px 16px rgba(59,130,246,0.12);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
}

.view-github-btn:hover{
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(59,130,246,0.18);
    opacity: 0.98;
}

.carousel-btn {
    background: var(--glass);
    border: none;
    padding: 15px 20px;
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: 25%;
    position: absolute;
}

.carousel-btn:hover {
    background: var(--shadow);
}

.carousel-btn i {
  pointer-events: none !important;
}


.prev-btn {
    left: -50px;
}

/* wrapper defined earlier */

.carousel-btn{
    background: var(--glass);
    border: none;
    padding: 10px 12px;
    font-size: 1.25rem;
    cursor: pointer;
    border-radius: 10px;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 40;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover{
    background: rgba(255,255,255,0.04);
}

.carousel-btn i{
    pointer-events: none !important;
}

.prev-btn{
    left: 10px;
}

.next-btn{
    right: 10px;
}
.skills-container{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
    gap: 20px;
}

.skills-group{
    background: rgba(255,255,255,0.03);
    padding: 22px;
    border-radius: 20px;
    box-shadow: 0 16px 40px rgba(0,0,0,0.18);
    min-height: 220px;
    display: flex;
    flex-direction: column;
}

.skills-group h3{
    margin: 0 0 12px;
    font-size: 1.05rem;
    padding: 6px 0;
    border-bottom: 1px solid rgba(173, 170, 170, 0.51);
}

.my-skills ul{
    list-style: none;
    padding: 0;
    margin: 0;
    color: var(--muted);
}

.my-skills li{
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}


.my-skills li:last-child{
    border-bottom: none;
}

/* Footer: full-width fixed footer at bottom */
footer{
    margin-top: 30px;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 60;
    background: linear-gradient(180deg, rgba(255,255,255,0.01), transparent);
    color: var(--muted);
}

footer .footer-container{
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 14px 16px;
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
}

/* Contact */
.contact{
    text-align: center;
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 24px;
    padding: 40px 30px;
    margin-top: 48px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.18);
}

.about h2,
.skills h2,
.contact h2{
    margin-bottom: 18px;
    font-size: 1.6rem;
    letter-spacing: -0.02em;
}

section:first-of-type {
    margin-top: 5vh !important;
}

section {
    margin-top: 10vh !important;
}

section h2{
    color: var(--text);
}

.contact p{
    margin: 0 auto 24px;
    max-width: 60ch;
    color: var(--muted);
    line-height: 1.8;
}

.email-btn{
    display: inline-block;
    margin-top: 8px;
    padding: 12px 18px;
    background: rgba(0,217,217,0.12);
    color: var(--text);
    border: 1px solid rgba(0,217,217,0.16);
    border-radius: 999px;
    transition: background var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}

.email-btn:hover{
    background: rgba(0,217,217,0.16);
    border-color: rgba(79,233,233,0.35);
    transform: translateY(-2px);
}

.contact-social-grid{
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
}

.github-link{
    color: var(--primary);
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 600;
    padding: 12px 16px;
    background: rgba(255,255,255,0.03);
    border-radius: 12px;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.github-link:hover{
    color: var(--accent);
    background: rgba(79,233,233,0.12);
    transform: translateY(-2px);
}

.download-cv-btn{
    display: inline-block;
    padding: 12px 20px;
    background: rgba(255,255,255,0.03);
    border-radius: 12px;
    color: var(--text);
    border: 1px dashed rgba(255,255,255,0.08);
    transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), color var(--transition-fast);
}

.download-cv-btn:hover{
    background: rgba(0,217,217,0.12);
    color: var(--text);
    border-color: rgba(0,217,217,0.24);
    transform: translateY(-2px);
}

/* (Footer styles consolidated above) */

footer p{
    margin: 0;
    font-size: 0.95rem;
}

.back-to-top{
    display: inline-flex;
    gap: 8px;
    align-items: center;
    color: var(--muted);
}

/* Utilities & responsiveness */
@media (max-width: 1200px) {
    .prev-btn { left: 10px; }
    .next-btn { right: 10px; }
}

@media (min-width:900px){
    .hero-title h1{ font-size:3.2rem; }
    .hero-subtitle h2{ font-size:1.2rem; }
    .featured-projects-container{ padding:32px 8px; }
}

@media (max-width: 900px) {
    :root {
        --card-width: 300px;
    }
    nav {
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px 16px;
    }
    .footer-container {
        flex-wrap: wrap;
        justify-content: center;
    }
    .projects-category-title {
        font-size: 1.35rem;
    }
}

@media (max-width: 768px) {
    body{ padding: calc(var(--header-height) + 16px) 14px calc(var(--footer-height) + 16px); }
    .projects-grid {
        grid-template-columns: 1fr;
    }
    .projects-category-title {
        margin: 24px 0 16px 0;
    }
}

@media (max-width:520px){
    :root {
        --header-height: 96px;
        --footer-height: 90px;
        --card-width: 260px;
    }
    body{ padding: calc(var(--header-height) + 12px) 12px calc(var(--footer-height) + 12px); }
    .hero, .projects-hero{
        margin: 28px auto 20px;
    }
    .hero-title h1, .projects-hero .hero-title h1{
        font-size: 2.4rem;
    }
    .hero-subtitle h2, .projects-hero .hero-subtitle h2{
        font-size: 1rem;
    }
    .carousel-wrapper {
        width: 100%;
    }
    .carousel-wrapper::before,
    .carousel-wrapper::after {
        display: none;
    }
    .featured-projects-container {
        max-width: 100%;
        padding: 24px 8px;
    }
    nav{
        padding: 10px 12px;
    }
    footer .footer-container{
        padding: 12px 14px;
    }
}

/* Subtle entrance animations */
@keyframes fadeUp{ from{ transform: translateY(8px); opacity:0 } to{ transform:none; opacity:1 } }
/* Exclude .featured-project from this animation so its transform doesn't conflict with JS-driven transitions */
.hero, .skills-group, .about p, .contact{
    animation: fadeUp var(--transition-slow) ease both;
}

/* Accessibility focus styles */
a:focus, .view-github-btn:focus, .email-btn:focus, .download-cv-btn:focus{ outline:2px solid rgba(96,165,250,0.18); outline-offset:4px; }

/* Make horizontal scrollbar subtle */
.featured-projects-container::-webkit-scrollbar{ height:10px; }
.featured-projects-container::-webkit-scrollbar-thumb{ background: rgba(255,255,255,0.03); border-radius:999px; }
/* Projects Page Styles */
.projects-hero {
    margin: 48px auto 32px;
    text-align: center;
    max-width: var(--max-width);
    padding: 0 12px;
}

.projects-hero .hero-title h1 {
    margin: 0;
    font-size: clamp(2.4rem, 4vw, 3.8rem);
    letter-spacing: -0.02em;
    max-width: 12ch;
    margin-inline: auto;
}

.projects-hero .hero-subtitle h2 {
    margin: 16px auto 0;
    font-weight: 600;
    color: var(--muted);
    font-size: 1.05rem;
    max-width: 46ch;
    line-height: 1.8;
}

.projects-grid-section {
    max-width: var(--max-width);
    margin: 0 auto 36px;
    padding: 0 12px;
}

.projects-category-title {
    font-size: 1.5rem;
    margin: 32px 0 20px 0;
    color: var(--text);
    letter-spacing: -0.01em;
    font-weight: 700;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--gap);
}

.project-card {
    background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent), var(--cards);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: 0 8px 30px rgba(2,6,23,0.5);
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: 12px;
    transition: transform var(--transition-medium) cubic-bezier(0.2,0.9,0.3,1), box-shadow var(--transition-fast) ease;
    will-change: transform, box-shadow;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 50px rgba(2,6,23,0.65);
}

.project-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 10px;
    background: linear-gradient(90deg, #0000, rgba(0,0,0,0.08));
}

.project-info h2 {
    margin: 8px 0 6px;
    font-size: 1.1rem;
}

.project-info p {
    margin: 6px 0 10px;
    color: var(--muted);
    font-size: 0.95rem;
    line-height: 1.5;
}

.project-tags ul {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    padding: 0;
    margin: 0 0 8px 0;
    list-style: none;
}

.project-tags li {
    font-size: 0.75rem;
    color: var(--muted);
    background: transparent;
    padding: 6px 8px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.03);
}

.project-footer {
    display: flex;
    justify-content: flex-end;
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 900px) {
    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    }
}