/* Ghanish Sharma PORTFOLIO - FINAL PERFECT VERSION */
/* Ultra-Modern Design with Premium Animations */

/* ===== CSS RESET ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== ROOT VARIABLES ===== */
:root {
    /* STRICT COLOR SYSTEM - NO GREYS ALLOWED */
    --bg-primary: #ffffff;
    --text-primary: #000000;
    --accent-primary: #39ff14;
    --nav-bg: rgba(255, 255, 255, 0.95);

    /* TYPOGRAPHY SCALE */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-logo: 2.2rem;
    --font-nav: 1.3rem;
    --font-title: 8vw;
    --font-section: 4vw;
    --font-body: 1.3rem;
    --font-small: 1.1rem;

    /* SPACING SYSTEM */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;

    /* ANIMATION TIMING */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.6s ease;
    --bounce-easing: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --smooth-easing: cubic-bezier(0.25, 0.46, 0.45, 0.94);

    /* LAYOUT CONSTANTS */
    --navbar-height: 90px;
    --content-max-width: 65%;
    --border-radius: 12px;

    /* Z-INDEX LAYERS */
    --z-loading: 10000;
    --z-mobile-nav: 1200;
    --z-navbar: 1100;
    --z-transition: 1000;
    --z-content: 1;
}

/* DARK THEME COLORS */
[data-theme="dark"] {
    --bg-primary: #000000;
    --text-primary: #ffffff;
    --accent-primary: #39ff14;
    --nav-bg: rgba(0, 0, 0, 0.95);
}

/* ===== BASE STYLES ===== */
html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    letter-spacing: 0.3px;
    transition: background-color var(--transition-medium), color var(--transition-medium);
    overflow-x: hidden;
    min-height: 100vh;
}

/* ===== LOADING SCREEN ===== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-loading);
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    animation: loadingPulse 2s var(--bounce-easing) infinite;
}

.loading-logo {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: 3px;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    animation: logoGlow 2s ease-in-out infinite alternate;
}

.loading-progress {
    width: 200px;
    height: 3px;
    background: rgba(57, 255, 20, 0.2);
    border-radius: 10px;
    overflow: hidden;
    margin: 0 auto;
}

.progress-bar {
    width: 100%;
    height: 100%;
    background: var(--accent-primary);
    transform: translateX(-100%);
    animation: progressLoad 3s var(--smooth-easing) infinite;
}

/* ===== NAVIGATION BAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--navbar-height);
    background: var(--nav-bg);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-bottom: 1px solid rgba(57, 255, 20, 0.1);
    z-index: var(--z-navbar);
    transition: transform var(--transition-medium), background-color var(--transition-medium);
}

.navbar.scrolled {
    background: var(--nav-bg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.navbar.hidden {
    transform: translateY(-100%);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-lg);
}

/* ===== NAVBAR LOGO ===== */
.navbar-logo {
    text-decoration: none;
    color: var(--text-primary);
    font-size: var(--font-logo);
    font-weight: 800;
    letter-spacing: 2px;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.navbar-logo:hover {
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.navbar-logo::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), rgba(57, 255, 20, 0.6));
    transition: width var(--transition-medium);
    border-radius: 2px;
}

.navbar-logo:hover::after {
    width: 100%;
}

/* ===== NAVBAR NAVIGATION ===== */
.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-size: var(--font-nav);
    font-weight: 500;
    letter-spacing: 1px;
    position: relative;
    transition: all var(--transition-medium);
    padding: var(--space-xs) 0;
}

.nav-link:hover {
    color: var(--accent-primary);
    transform: translateY(-1px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-medium);
    border-radius: 1px;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--accent-primary);
}

/* ===== ENHANCED THEME TOGGLE ===== */
.theme-toggle-wrapper {
    margin-left: var(--space-md);
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: transform var(--transition-fast);
    position: relative;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.toggle-track {
    width: 70px;
    height: 35px;
    background: var(--text-primary);
    border-radius: 20px;
    position: relative;
    transition: all var(--transition-medium);
    border: 2px solid var(--text-primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.theme-toggle:hover .toggle-track {
    box-shadow: 0 6px 25px rgba(57, 255, 20, 0.3);
}

.toggle-thumb {
    width: 28px;
    height: 28px;
    background: var(--bg-primary);
    border-radius: 50%;
    position: absolute;
    top: 1.5px;
    left: 2px;
    transition: all 0.4s var(--bounce-easing);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .toggle-thumb {
    transform: translateX(34px);
}

.toggle-icon {
    width: 14px;
    height: 14px;
    position: absolute;
    transition: all var(--transition-medium);
    color: var(--text-primary);
}

.sun-icon {
    opacity: 1;
    transform: rotate(0deg);
}

.moon-icon {
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="dark"] .sun-icon {
    opacity: 0;
    transform: rotate(-180deg);
}

[data-theme="dark"] .moon-icon {
    opacity: 1;
    transform: rotate(0deg);
}

/* ===== MOBILE MENU ===== */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
    gap: 4px;
    transition: transform var(--transition-fast);
}

.mobile-menu-btn:hover {
    transform: scale(1.1);
}

.hamburger-line {
    width: 28px;
    height: 3px;
    background: var(--text-primary);
    transition: all var(--transition-medium);
    transform-origin: center;
    border-radius: 2px;
}

.mobile-menu-btn.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-btn.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== MOBILE NAVIGATION OVERLAY ===== */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    z-index: var(--z-mobile-nav);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
    backdrop-filter: blur(20px);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    text-align: center;
}

.mobile-nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    transition: all var(--transition-medium);
    opacity: 0;
    transform: translateY(30px);
    animation: mobileNavSlideIn 0.6s var(--bounce-easing) forwards;
}

.mobile-nav-link:nth-child(1) { animation-delay: 0.1s; }
.mobile-nav-link:nth-child(2) { animation-delay: 0.2s; }
.mobile-nav-link:nth-child(3) { animation-delay: 0.3s; }
.mobile-nav-link:nth-child(4) { animation-delay: 0.4s; }

.mobile-nav-link:hover {
    color: var(--accent-primary);
    transform: translateY(-5px) scale(1.05);
}

/* ===== PAGE TRANSITION ===== */
.page-transition-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent-primary), rgba(57, 255, 20, 0.8));
    z-index: var(--z-transition);
    transition: right var(--transition-slow);
}

.page-transition-overlay.active {
    right: 0;
    animation: slideTransition 1.2s var(--smooth-easing);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    margin-top: var(--navbar-height);
    min-height: calc(100vh - var(--navbar-height));
}

.page {
    min-height: calc(100vh - var(--navbar-height));
    display: none;
    opacity: 0;
    animation: pageSlideIn var(--transition-slow) var(--smooth-easing) forwards;
}

.page.active {
    display: block;
    opacity: 1;
}

.page-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-md);
    position: relative;
    min-height: calc(100vh - var(--navbar-height) - var(--space-xl) * 2);
    display: flex;
    align-items: center;
}

/* ===== HOME PAGE STYLES ===== */
.hero-section {
    position: relative;
    z-index: 2;
    width: 100%;
}

.main-title {
    font-size: var(--font-title);
    font-weight: 800;
    letter-spacing: 4px;
    line-height: 1.1;
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
    position: relative;
}

.typing-text {
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.typing-text::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    color: var(--accent-primary);
    overflow: hidden;
    border-right: 3px solid var(--accent-primary);
    animation: typewriter 4s steps(30) forwards;
}

.typing-cursor {
    color: var(--accent-primary);
    animation: blink 1s infinite;
    margin-left: 3px;
    opacity: 0;
    animation-delay: 4s;
    animation-fill-mode: forwards;
}

.hero-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.handle {
    font-size: var(--font-body);
    font-weight: 400;
    letter-spacing: 1px;
    color: var(--text-primary);
}

.tagline {
    font-size: var(--font-body);
    font-weight: 500;
    letter-spacing: 1px;
    color: var(--text-primary);
}

.description {
    font-size: var(--font-body);
    font-weight: 400;
    letter-spacing: 0.5px;
    line-height: 1.7;
    color: var(--text-primary);
    max-width: 700px;
}

.fade-element {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s var(--smooth-easing) forwards;
}

/* ===== FLOATING BACKGROUND ELEMENTS ===== */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.floating-shape {
    position: absolute;
    background: var(--accent-primary);
    opacity: 0.08;
    border-radius: 50%;
    animation: floatMove 8s ease-in-out infinite;
}

.shape-1 {
    width: 120px;
    height: 120px;
    top: 10%;
    right: 15%;
    animation-delay: 0s;
    animation-duration: 8s;
}

.shape-2 {
    width: 80px;
    height: 80px;
    top: 70%;
    right: 40%;
    animation-delay: 2s;
    animation-duration: 10s;
}

.shape-3 {
    width: 100px;
    height: 100px;
    top: 40%;
    right: 60%;
    animation-delay: 4s;
    animation-duration: 12s;
}

.shape-4 {
    width: 60px;
    height: 60px;
    top: 20%;
    right: 80%;
    animation-delay: 6s;
    animation-duration: 9s;
}

/* ===== PAGE-SPECIFIC STYLES ===== */

/* Section Title */
.section-title {
    font-size: var(--font-section);
    font-weight: 800;
    letter-spacing: 3px;
    line-height: 1.1;
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
}

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

.timeline-section {
    margin-bottom: var(--space-xl);
}

.timeline-item {
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    border-left: 3px solid var(--accent-primary);
    padding-left: var(--space-md);
}

.timeline-title {
    font-size: var(--font-body);
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.timeline-institution {
    font-size: var(--font-small);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.timeline-period {
    font-size: var(--font-small);
    font-weight: 400;
    color: var(--accent-primary);
    margin-bottom: var(--space-xs);
}

.timeline-description {
    font-size: var(--font-small);
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-primary);
}

.bio-section {
    margin-bottom: var(--space-xl);
}

.bio-text {
    font-size: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-primary);
    max-width: 800px;
}

.skills-section {
    margin-bottom: var(--space-lg);
}

.skills-title {
    font-size: var(--font-body);
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.skills-grid {
    display: grid;
    gap: var(--space-md);
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.skill-name {
    font-size: var(--font-small);
    font-weight: 500;
    color: var(--text-primary);
}

.skill-bar {
    width: 100%;
    height: 6px;
    background: rgba(57, 255, 20, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--accent-primary);
    width: 0;
    border-radius: 3px;
}

/* Projects Page Styles */
.projects-content {
    width: 100%;
}

.projects-grid {
    display: grid;
    gap: var(--space-lg);
}

.project-card {
    padding: var(--space-md);
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    transition: all var(--transition-medium);
    position: relative;
    background: rgba(57, 255, 20, 0.02);
}

.project-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
}

.project-status.active {
    background: rgba(57, 255, 20, 0.2);
    color: var(--accent-primary);
}

.project-status.development {
    background: rgba(255, 165, 0, 0.2);
    color: #ffa500;
}

.project-title {
    font-size: var(--font-body);
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.project-description {
    font-size: var(--font-small);
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    padding: 0.25rem 0.75rem;
    background: rgba(57, 255, 20, 0.1);
    color: var(--accent-primary);
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Contact Page Styles */
.contact-content {
    width: 100%;
}

.contact-grid {
    display: grid;
    gap: var(--space-md);
}

.contact-card {
    padding: var(--space-md);
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    transition: all var(--transition-medium);
    background: rgba(57, 255, 20, 0.02);
}

.contact-label {
    font-size: var(--font-small);
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.contact-link {
    font-size: var(--font-small);
    font-weight: 400;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-link:hover {
    color: var(--accent-primary);
}

.contact-text {
    font-size: var(--font-small);
    font-weight: 400;
    color: var(--text-primary);
}

.slide-in-element {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ===== ANIMATIONS ===== */
@keyframes loadingPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes logoGlow {
    0% { text-shadow: 0 0 5px transparent; }
    100% { text-shadow: 0 0 20px rgba(57, 255, 20, 0.5); }
}

@keyframes progressLoad {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(0); }
}

@keyframes typewriter {
    0% { width: 0; }
    100% { width: 100%; }
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

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

@keyframes slideTransition {
    0% { right: -100%; }
    50% { right: 0; }
    100% { right: 100%; }
}

@keyframes pageSlideIn {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes floatMove {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-30px) rotate(90deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
    75% {
        transform: translateY(-40px) rotate(270deg);
    }
}

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    :root {
        --content-max-width: 80%;
        --font-title: 10vw;
    }
}

@media (max-width: 768px) {
    :root {
        --font-logo: 1.8rem;
        --font-nav: 1.1rem;
        --font-title: 12vw;
        --font-section: 8vw;
        --font-body: 1.1rem;
        --space-md: 1rem;
        --space-lg: 2rem;
        --space-xl: 3rem;
        --content-max-width: 90%;
        --navbar-height: 70px;
    }

    .navbar-container {
        padding: 0 var(--space-md);
    }

    .navbar-nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .theme-toggle-wrapper {
        margin-left: var(--space-sm);
    }

    .toggle-track {
        width: 60px;
        height: 30px;
    }

    .toggle-thumb {
        width: 24px;
        height: 24px;
    }

    [data-theme="dark"] .toggle-thumb {
        transform: translateX(28px);
    }

    .page-container {
        padding: var(--space-lg) var(--space-md);
        align-items: flex-start;
        padding-top: var(--space-lg);
    }

    .timeline-item {
        padding: var(--space-sm);
        padding-left: var(--space-sm);
    }

    .projects-grid {
        gap: var(--space-md);
    }

    .project-card {
        padding: var(--space-sm);
    }

    .contact-grid {
        gap: var(--space-sm);
    }

    .contact-card {
        padding: var(--space-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --font-logo: 1.6rem;
        --font-title: 14vw;
        --font-section: 10vw;
        --space-md: 0.75rem;
        --content-max-width: 95%;
    }

    .navbar-container {
        padding: 0 var(--space-sm);
    }

    .loading-logo {
        font-size: 2.5rem;
    }
}

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

    html {
        scroll-behavior: auto;
    }
}

@media (prefers-contrast: high) {
    :root {
        --accent-primary: var(--text-primary);
    }
}

/* ===== FOCUS STYLES ===== */
*:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 3px;
    border-radius: 4px;
}

button:focus,
a:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* ===== SELECTION STYLES ===== */
::selection {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

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

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(57, 255, 20, 0.8);
}