:root {
    --primary: #8b5cf6;
    --primary-dark: #7c3aed;
    --primary-light: #a78bfa;
    --bg-dark: #0a0a0a;
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(139, 92, 246, 0.35);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-bg-hover: rgba(15, 15, 15, 0.6);

    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 40px;
    --spacing-3xl: 60px;
    --spacing-4xl: 80px;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 18px;
    --radius-full: 999px;

    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    --font-family: 'Inter', sans-serif;
    --line-height-tight: 1.2;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.8;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-light) var(--card-bg);
}

html, body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background:
            radial-gradient(circle at 50% 40%, rgba(139, 92, 246, 0.12), transparent 60%),
            linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px),
            var(--bg-dark);
    background-size: cover, 64px 64px, 64px 64px;
    overflow-x: hidden;
    min-height: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--primary);
    color: var(--bg-dark);
}

::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--card-bg);
    border-left: 1px solid rgba(220, 202, 136, 0.05);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 6px;
    border: 2px solid var(--card-bg);
    transition: var(--transition-base);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
    box-shadow: 0 0 10px rgba(220, 202, 136, 0.5);
}

::-webkit-scrollbar-thumb:active {
    box-shadow: 0 0 15px rgba(220, 202, 136, 0.7);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 100%;
}

.navbar {
    width: 100%;
    padding: var(--spacing-lg) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 20px;
}

.logo a {
    text-decoration: none;
    color: #d1d5db;
    transition: var(--transition-base);
}

.logo a:hover {
    color: var(--primary-dark);
}

.navbar nav {
    display: flex;
    gap: 18px;
    align-items: center;
    flex-wrap: wrap;
}

.navbar nav a {
    text-decoration: none;
    color: #d1d5db;
    font-weight: 500;
    transition: var(--transition-base);
}

.navbar nav a:hover {
    color: var(--primary-light);
}

.hero {
    padding: 100px 0 var(--spacing-3xl);
}

.hero .container {
    display: flex;
    gap: var(--spacing-xl);
}

.photo {
    width: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1em;
}

.photo img {
    width: 335px;
    height: 408px;
    border-radius: 1em;
    border: 3px solid var(--primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.photo img:hover {
    box-shadow: 0 0 50px var(--primary-light);
    transform: scale(1.05);
    cursor: pointer;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin: var(--spacing-sm) 0;
    line-height: var(--line-height-tight);
}

.hero h2 {
    font-size: 20px;
    font-weight: 500;
    color: var(--primary-light);
    margin-bottom: var(--spacing-lg);
}

.intro,
.bio {
    max-width: 700px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.location {
    margin: 20px 0;
    color: var(--text-secondary);
}

.btn {
    padding: 14px 28px;
    border-radius: 25px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
    border: 2px solid var(--primary-dark);
    color: var(--primary-dark);
    background: transparent;
}

.btn.primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.btn.primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(139, 92, 246, 0.3);
}

.btn.primary:active {
    transform: translateY(0);
}

.btn.outline {
    margin-top: auto;
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
}

.btn.outline:hover {
    border-color: var(--primary);
    color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

.btn.outline:active {
    transform: translateY(0);
}

.btn.btn-secondary {
    margin-top: auto;
    border: 1px solid var(--primary);
    color: var(--primary-light);
}

.btn.btn-secondary:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
    background-color: #111;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

.btn.btn-secondary:active {
    transform: translateY(0);
}

.buttons {
    display: flex;
    gap: var(--spacing-md);
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: var(--spacing-2xl);
}

.page-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: var(--line-height-tight);
}

.page-intro {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.7;
    max-width: 800px;
}

.card,
.project-card,
.experience-item,
.skill-category {
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: var(--transition-base);
}

.card {
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-xl);
}

.card h3,
.experience-title,
.skill-category-title {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 700;
}

.project-card:hover,
.experience-item:hover,
.skill-category:hover,
.feature-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(139, 92, 246, 0.15);
}

.project-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.project-card h3 {
    margin-top: 0;
}

.project-card p,
.experience-description,
.skill-items {
    color: var(--text-secondary);
    line-height: var(--line-height-normal);
}

.project-card .project-buttons {
    margin-top: auto;
    display: flex;
    gap: var(--spacing-md);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.features-grid,
.fm-challenges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.tags,
.tech-list,
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin: var(--spacing-md) 0;
}

.tags span,
.tech-list span,
.project-tags .tag {
    background: var(--card-bg);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 13px;
    color: #e6e6ea;
    transition: var(--transition-fast);
}

.tags span:hover,
.tech-list span:hover {
    background: rgba(139, 92, 246, 0.2);
    transform: translateY(-2px);
}

.features-list,
.highlights-list,
.interests-list {
    list-style: none;
    padding-left: 0;
}

.features-list li,
.highlights-list li {
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-lg);
    position: relative;
    color: var(--text-secondary);
    line-height: 1.7;
}

.features-list li::before,
.highlights-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.highlights ul {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-md);
}

.highlights li {
    margin-bottom: var(--spacing-sm);
    padding-left: 18px;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.7;
}

.highlights li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-light);
    font-size: 20px;
    line-height: 1;
}

.feature-card {
    padding: 20px 24px 20px 48px;
    background: var(--card-bg);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    position: relative;
    transition: var(--transition-base);
}

.feature-card::before {
    content: "✓";
    position: absolute;
    left: 18px;
    top: 18px;
    color: var(--primary-light);
    font-weight: bold;
    font-size: 16px;
}

.fm-card {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(14px);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    transform: translateY(20px);
    opacity: 0;
    animation: fadeUp 0.6s ease forwards;
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.fm-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

.fm-card-thumbnail {
    position: relative;
    overflow: hidden;
}

.fm-card-thumbnail img {
    width: 100%;
    height: 190px;
    object-fit: cover;
    transition: var(--transition-slow);
}

.fm-card:hover img {
    transform: scale(1.08);
}

.fm-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.85));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    opacity: 0;
    transition: var(--transition-base);
}

.fm-card:hover .fm-card-overlay {
    opacity: 1;
}

.fm-overlay-btn {
    padding: 10px 18px;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    text-decoration: none;
    color: #fff;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
    transition: var(--transition-base);
}

.fm-overlay-btn {
    transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.fm-overlay-btn:hover {
    background: #7c7cff;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(124, 124, 255, 0.3);
}

.fm-overlay-btn:active {
    transform: scale(1.02);
}

.fm-btn-source:hover {
    background: #111;
}

.fm-card-content {
    padding: 1.2rem 1.4rem 1.5rem;
}

.fm-card-content a {
    text-decoration: none;
}

.fm-card-content a:hover {
    text-decoration: underline;
    color: #fff;
}

.fm-card-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 0.6rem;
}

.fm-tech-icons {
    display: flex;
    gap: 10px;
    font-size: 1.1rem;
}

.fm-tech-icons i {
    color: #aaa;
    transition: var(--transition-base);
}

.fm-card:hover .fm-tech-icons i.fa-html5 { color: #e34c26; }
.fm-card:hover .fm-tech-icons i.fa-css3-alt { color: #264de4; }
.fm-card:hover .fm-tech-icons i.fa-js { color: #f7df1e; }

@keyframes fadeUp {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    background: var(--bg-dark);
    transform: scale(1);
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

.page-transition.active {
    opacity: 1;
    pointer-events: all;
    transform: scale(1.01);
}

.page-transition.exiting {
    opacity: 0;
    transform: scale(0.99);
}

.projects,
.projects-page,
.experience-page {
    width: 100%;
    padding: var(--spacing-4xl) 0;
}

.project-page,
.project-detail-page {
    max-width: 1200px;
    margin: auto;
    padding: 120px var(--spacing-lg);
    position: relative;
    z-index: 2;
}

.project-hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.project-meta,
.experience-org,
.experience-subtitle {
    color: var(--primary-light);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    font-size: 16px;
}

.project-summary {
    max-width: 700px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.features,
.technologies,
.highlights {
    margin-top: var(--spacing-4xl);
}

.features .section-title,
.technologies .section-title,
.highlights .section-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.experience-section {
    margin-bottom: 3rem;
}

.experience-item {
    background: var(--card-bg-hover);
    backdrop-filter: blur(10px);
    margin-bottom: var(--spacing-lg);
}

.experience-title {
    font-size: 1.5rem;
}

.interests-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.interests-list li {
    padding: var(--spacing-sm);
    background: var(--card-bg-hover);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-align: center;
    transition: var(--transition-base);
}

.interests-list li:hover {
    border-color: var(--primary);
    color: var(--primary-light);
    transform: translateY(-2px);
}


.center-btn {
    margin: var(--spacing-4xl) 0 var(--spacing-2xl);
    text-align: center;
}

.project-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.live-preview {
    margin-left: var(--spacing-md);
}

.error-message {
    text-align: center;
    padding: var(--spacing-4xl) 0;
}

.error-message p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 18px;
}

footer {
    text-align: center;
    padding: var(--spacing-2xl) 20px;
    color: var(--text-muted);
    font-size: 14px;
}

.footer-logo {
    font-size: 22px;
    color: var(--primary-light);
    transition: var(--transition-base);
}

.footer-logo:hover {
    color: var(--primary);
    transform: scale(1.1);
}

.footer-links a {
    font-size: 28px;
    color: #d1d5db;
    transition: var(--transition-base);
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--primary-light);
    transform: translateY(-2px);
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid rgba(139, 92, 246, 0.5);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

@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;
    }
}


@media (max-width: 1028px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .hero {
        padding: 72px 0 48px;
    }

    .photo,
    .photo img {
        display: none;
    }

    .hero h1 {
        font-size: 44px;
    }

    .hero h2 {
        font-size: 18px;
    }

    .bio {
        max-width: 100%;
    }

    .buttons {
        flex-wrap: wrap;
    }
}

@media (max-width: 667px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .project-card .project-buttons {
        flex-direction: column;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .navbar {
        padding: 18px 0;
    }

    .logo {
        font-size: 18px;
    }

    .hero {
        padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero h2 {
        font-size: 16px;
    }

    .bio {
        font-size: 15px;
    }

    .projects {
        padding: var(--spacing-2xl) 0;
    }

    .section-title {
        font-size: 28px;
    }

    .project-card {
        max-width: 100%;
    }

    .feature-card,
    .card,
    .project-card {
        transform: none !important;
        transition: none;
    }
}

@media (max-width: 420px) {
    .live-preview {
        margin-left: 0;
        margin-top: var(--spacing-md) !important;
    }
}