/*
 * Portfolio Website Styles
 * Copyright (c) 2024 Dhruv Narayan Bajaj
 * Licensed under the MIT License
 * https://github.com/DHuvie
 */

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

:root {
    --bg: #0a0a0a;
    --text: #f5f5f5;
    --text-dim: #888;
    --accent: #fff;
    --border: #1a1a1a;
}

[data-theme="light"] {
    --bg: #ffffff;
    --text: #0a0a0a;
    --text-dim: #666;
    --accent: #000;
    --border: #e5e5e5;
}

body {
    transition: background-color 0.3s ease, color 0.3s ease;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    cursor: none !important;
    overflow-x: hidden;
}

a, button, input, textarea, select {
    cursor: none !important;
}

* {
    transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Loader */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--bg);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader-text {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.loader-line {
    display: flex;
    gap: 0.2em;
}

.loader-line span {
    display: inline-block;
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    opacity: 0;
    transform: translateY(50px);
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

/* Particles */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1001;
    opacity: 0.4;
    transition: opacity 0.3s ease;
}

[data-theme="light"] #particles {
    opacity: 0.3;
}

/* Progress Bar */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, #fff, #888);
    z-index: 10001;
    transform-origin: left;
    transform: scaleX(0);
}

/* Cursor */
.cursor {
    position: fixed;
    width: 10px;
    height: 10px;
    background: var(--text);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    mix-blend-mode: difference;
    opacity: 0;
    display: none;
}

.cursor-follower {
    position: fixed;
    top: -22px;
    left: -22px;
    width: 44px;
    height: 44px;
    border: 2px solid #fff;
    border-radius: 50%;
    pointer-events: none;
    z-index: 9998;
    will-change: transform;
    transition: width 0.2s ease, height 0.2s ease, top 0.2s ease, left 0.2s ease;
    mix-blend-mode: difference;
}

.cursor.active {
    opacity: 0;
}

.cursor-follower.active {
    width: 26px;
    height: 26px;
    top: -13px;
    left: -13px;
    border-width: 2px;
}

/* Nav */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 2rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    opacity: 0;
}

[data-theme="light"] .nav {
    background: rgba(255, 255, 255, 0.8);
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.name-stacked {
    display: none;
}

.name-full {
    display: inline;
}

.nav-links {
    display: flex;
    gap: 3rem;
}

.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 400;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--text);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--text);
}

.nav-links a:hover::after {
    width: 100%;
}


.nav-right {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: 0;
}

.theme-toggle:hover {
    border-color: var(--text);
    background: rgba(255, 255, 255, 0.05);
    transform: scale(1.1);
}

[data-theme="light"] .theme-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

.sun-icon,
.moon-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

[data-theme="dark"] .sun-icon {
    opacity: 1;
    transform: translate(-50%, -50%) rotate(0deg) scale(1);
}

[data-theme="dark"] .moon-icon {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(180deg) scale(0);
}

[data-theme="light"] .sun-icon {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(-180deg) scale(0);
}

[data-theme="light"] .moon-icon {
    opacity: 1;
    transform: translate(-50%, -50%) rotate(0deg) scale(1);
}

/* Main */
main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 4rem;
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: heroFloat 20s ease-in-out infinite;
}

[data-theme="light"] .hero-bg {
    background: radial-gradient(circle, rgba(0,0,0,0.02) 0%, transparent 70%);
}

@keyframes heroFloat {
    0%, 100% { 
        transform: translate(-50%, -50%) scale(1);
    }
    50% { 
        transform: translate(-50%, -48%) scale(1.1);
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 6rem;
    align-items: center;
    max-width: 1400px;
    width: 100%;
}

.hero-left {
    text-align: left;
}

.hero-right {
    text-align: left;
}

.hero-label {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 2rem;
    font-weight: 500;
    opacity: 0;
}

.hero-title {
    font-size: 5rem;
    font-weight: 700;
    line-height: 0.9;
    letter-spacing: -0.02em;
}

.hero-points {
    list-style: none;
    margin: 0;
    text-align: left;
    opacity: 0;
}

.hero-points li {
    font-size: 1.0625rem;
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 1rem;
    padding-left: 2rem;
    position: relative;
    font-weight: 300;
    opacity: 0;
}

.hero-points li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--text-dim);
    font-weight: 400;
}

.hero-scroll-text {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-dim);
    opacity: 0;
    letter-spacing: 0.05em;
}

.hero-scroll-text svg {
    transition: transform 0.3s ease;
    opacity: 0.6;
}

.hero-scroll-text:hover svg {
    transform: translateY(4px);
    opacity: 1;
}

.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.scroll-indicator::after {
    content: 'SCROLL';
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    color: var(--text-dim);
    font-weight: 400;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--text-dim), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { 
        transform: scaleY(1);
        opacity: 1;
    }
    50% { 
        transform: scaleY(0.5);
        opacity: 0.5;
    }
}

/* Sections */
section {
    padding: 10rem 0;
}

section.hero {
    border-top: none;
}

.section-header {
    margin-bottom: 6rem;
    opacity: 0;
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 500;
    letter-spacing: -0.03em;
}

/* Projects */
.projects {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.project {
    opacity: 0;
    transform: translateY(50px);
}

.project a {
    display: grid;
    grid-template-columns: 80px 1fr 80px;
    gap: 3rem;
    padding: 3rem 0;
    border-bottom: 1px solid var(--border);
    text-decoration: none;
    color: var(--text);
    align-items: center;
    transition: all 0.4s ease;
    position: relative;
}

.project a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 0;
    background: linear-gradient(to bottom, var(--text), transparent);
    transition: height 0.4s ease;
}

.project a:hover::before {
    height: 100%;
}

.project a:hover {
    padding-left: 2rem;
    background: rgba(255, 255, 255, 0.02);
}

[data-theme="light"] .project a:hover {
    background: rgba(0, 0, 0, 0.02);
}

.project-number {
    font-size: 1.5rem;
    color: var(--text-dim);
    font-weight: 300;
}

.project-content h3 {
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
    transition: opacity 0.3s ease;
}

.project a:hover h3 {
    opacity: 0.6;
}

.project-content p {
    font-size: 1rem;
    color: var(--text-dim);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.project-tags {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.project-tags span {
    font-size: 0.8125rem;
    padding: 0.4rem 1rem;
    border: 1px solid var(--border);
    color: var(--text-dim);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.project-tags span::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--text);
    transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.project a:hover .project-tags span {
    border-color: var(--text);
    color: var(--bg);
}

.project a:hover .project-tags span::before {
    left: 0;
}

.project-arrow {
    font-size: 2rem;
    color: var(--text-dim);
    text-align: right;
    transition: all 0.4s ease;
}

.project a:hover .project-arrow {
    transform: translateX(10px);
    color: var(--text);
}

/* About */
.about-content {
    max-width: 100%;
    width: 100%;
}

.about-lead {
    font-size: 1.75rem;
    line-height: 1.8;
    font-weight: 300;
    margin-bottom: 4rem;
    letter-spacing: 0.01em;
    word-spacing: 0.1em;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    width: 100%;
}

.about-card {
    padding: 3rem;
    border: 1px solid var(--border);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    background: var(--bg);
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.03), transparent);
    transition: left 0.6s ease;
}

.about-card:hover::before {
    left: 100%;
}

.about-card:hover {
    border-color: var(--text-dim);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .about-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.about-card h4 {
    font-size: 0.875rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 2rem;
    font-weight: 500;
}

.about-card ul {
    list-style: none;
}

.about-card li {
    font-size: 1.0625rem;
    color: var(--text);
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
    opacity: 1;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-card li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--text-dim);
    transition: color 0.3s ease;
}

.about-card:hover li::before {
    color: var(--text);
}

/* Contact */
.contact-content {
    max-width: 900px;
    opacity: 0;
}

.contact-text {
    font-size: 1.5rem;
    color: var(--text-dim);
    margin-bottom: 4rem;
    font-weight: 300;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.contact-link {
    display: grid;
    grid-template-columns: 80px 1fr 80px;
    align-items: center;
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--border);
    text-decoration: none;
    color: var(--text);
    transition: all 0.4s ease;
}

.contact-link:last-child {
    border-bottom: none;
}

.contact-link:hover {
    padding-left: 2rem;
    background: rgba(255, 255, 255, 0.02);
}

.link-num {
    font-size: 1rem;
    color: var(--text-dim);
    font-weight: 300;
}

.link-text {
    font-size: 2.5rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    transition: opacity 0.3s ease;
}

.contact-link:hover .link-text {
    opacity: 0.6;
}

.link-arrow {
    font-size: 2rem;
    color: var(--text-dim);
    text-align: right;
    transition: all 0.4s ease;
}

.contact-link:hover .link-arrow {
    transform: translateX(10px);
    color: var(--text);
    opacity: 0.7;
}

/* Footer */
.footer {
    padding: 6rem 0 3rem;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
    align-items: start;
}

.footer-left h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.footer-left p {
    color: var(--text-dim);
    font-size: 1rem;
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: 2rem;
    justify-content: flex-end;
    align-items: center;
}

.footer-links a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: all 0.3s ease;
    position: relative;
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--text);
    transition: width 0.3s ease;
}

.footer-links a:hover::after {
    width: 100%;
}

.footer-links a:hover {
    opacity: 0.7;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    color: var(--text-dim);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1024px) {
    main {
        padding: 0 3rem;
    }
    
    .nav {
        padding: 1.5rem 3rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    body {
        cursor: auto;
    }
    
    .cursor,
    .cursor-follower {
        display: none;
    }
    
    main {
        padding: 0 2rem;
    }
    
    .nav {
        padding: 1.5rem 2rem;
    }
    
    .nav-links {
        gap: 2rem;
    }
    
    section {
        padding: 8rem 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .project a {
        grid-template-columns: 60px 1fr 60px;
        gap: 1.5rem;
        padding: 2rem 0;
    }
    
    .contact-link {
        grid-template-columns: 60px 1fr 60px;
        padding: 2rem 0;
    }
    
    .link-text {
        font-size: 2rem;
    }
}

@media (max-width: 640px) {
    .nav-links {
        gap: 1.5rem;
        font-size: 0.875rem;
    }
    
    .nav-right {
        gap: 1rem;
    }
    
    .theme-toggle {
        width: 36px;
        height: 36px;
    }
    
    .project a {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .project-number,
    .project-arrow {
        display: none;
    }
    
    .contact-link {
        grid-template-columns: 1fr;
    }
    
    .link-num,
    .link-arrow {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-points li {
        font-size: 0.9375rem;
    }
    
    .hero-scroll-text {
        font-size: 0.8125rem;
        bottom: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-card {
        padding: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .footer {
        padding: 4rem 0 2rem;
    }
}

@media (max-width: 480px) {
    main {
        padding: 0 1.5rem;
    }
    
    .nav {
        padding: 1rem 1.5rem;
    }
    
    .nav-logo {
        font-size: 0.875rem;
        line-height: 1.4;
    }
    
    .name-full {
        display: none;
    }
    
    .name-stacked {
        display: flex;
        flex-direction: column;
        gap: 0.1rem;
    }
    
    .name-stacked span {
        display: block;
    }
    
    section {
        padding: 6rem 0;
    }
    
    .hero {
        min-height: 80vh;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-points li {
        font-size: 0.875rem;
        padding-left: 1.5rem;
    }
    
    .section-header {
        margin-bottom: 4rem;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .about-lead {
        font-size: 1.25rem;
    }
    
    .about-card {
        padding: 1.5rem;
    }
    
    .contact-text {
        font-size: 1.25rem;
    }
    
    .footer-left h3 {
        font-size: 1.25rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .loader-line span {
        font-size: 2rem;
        letter-spacing: 0.05em;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-dim);
}