/* styles3.css - Modern Portfolio Design */

/* ================================
   1. CSS Variables and Root Styles
=============================== */
:root {
    --primary-color: #2563eb;
    --secondary-color: #1d4ed8;
    --accent-color: #3b82f6;
    --background-color: #f8fafc;
    --text-color: #1e293b;
    --light-text: #64748b;
    --card-bg: #ffffff;
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    --gradient-hover: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

/* ================================
   2. Global Reset and Base Styles
=============================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

/* ================================
   3. Typography
=============================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-emphasis-color: transparent;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

/* ================================
   4. Hero Section
=============================== */
/* ================================
   4. Hero Section
=============================== */
.hero {
    min-height: 100vh;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    background: linear-gradient(rgba(255,255,255,0.92), rgba(255,255,255,0.92));
}
/* Sliding background text */
.sliding-text {
    position: absolute;
    width: 100%;
    white-space: nowrap;
    opacity: 0.25; /* Increased from 0.05 */
    color: var(--primary-color);
    font-size: 2rem;
    font-weight: 700;
    text-transform: uppercase;
    pointer-events: none;
    letter-spacing: 2px;
}

.sliding-text-1 {
    top: 20%; /* Adjusted positions */
    animation: slideLeft 40s linear infinite;
}

.sliding-text-2 {
    top: 40%;
    animation: slideRight 35s linear infinite;
}

.sliding-text-3 {
    top: 65%;
    animation: slideLeft 45s linear infinite;
}

.sliding-text-4 {
    top: 80%;
    animation: slideRight 30s linear infinite;
}

@keyframes slideLeft {
    0% {
        transform: translateX(0%);
    }
    100% {
        transform: translateX(-50%);
    }
}

@keyframes slideRight {
    0% {
        transform: translateX(-50%);
    }
    100% {
        transform: translateX(0%);
    }
}


.hero-content {
    max-width: 1200px;
    margin: auto;
    text-align: center;
    padding: 2rem 2rem;
    position: relative;
    z-index: 2;
    background: transparent;
}

.animated-header {
    margin-bottom: 1.5rem;
}

.animated-header h1 {
    font-size: 5.5rem;
    margin-bottom: 0.25rem;
    opacity: 0;
    transform: translateY(-20px);
    animation: fadeInDown 1s ease forwards;
}

.title-text {
    font-size: 1.5rem;
    color: var(--light-text);
    opacity: 0;
    animation: fadeIn 1s ease 0.5s forwards;
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 1.5rem;
    color: var(--light-text);
    opacity: 0;
    animation: fadeIn 1s ease 1s forwards;
}

.social-links {
    margin-top: 1.5rem;
}

/* Hero gradient overlay */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.5) 0%, rgba(255,255,255,0.3) 100%);
    pointer-events: none;
    z-index: 1;
}
.math-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.equation-layer {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0.4;
}

.equation {
    position: absolute;
    font-family: 'Times New Roman', serif;
    font-size: 2rem;
    color: var(--primary-color);
    animation: fadeInOut 8s infinite;
}

/* Position equations (distributed more evenly than wealth in a Gini coefficient of 0) */
.equation:nth-child(1) { top: 10%; left: 15%; animation-delay: 0s; }
.equation:nth-child(2) { top: 35%; left: 75%; animation-delay: 1s; }
.equation:nth-child(3) { top: 65%; left: 25%; animation-delay: 2s; }
.equation:nth-child(4) { top: 20%; left: 85%; animation-delay: 3s; }
.equation:nth-child(5) { top: 80%; left: 45%; animation-delay: 4s; }
.equation:nth-child(6) { top: 45%; left: 35%; animation-delay: 2.5s; }
.equation:nth-child(7) { top: 15%; left: 55%; animation-delay: 3.5s; }
.equation:nth-child(8) { top: 70%; left: 80%; animation-delay: 1.5s; }
.equation:nth-child(9) { top: 40%; left: 10%; animation-delay: 4.5s; }
.equation:nth-child(10) { top: 85%; left: 65%; animation-delay: 0.5s; }
.line-container {
    position: absolute;
    width: 100%;
    height: 100%;
}

.background-lines {
    width: 100%;
    height: 100%;
    opacity: 0.3;
}

.line {
    fill: none;
    stroke: var(--primary-color);
    stroke-width: 2;
    animation: drawLine 3s infinite;
}

.line2 { animation-delay: 1s; }
.line3 { animation-delay: 2s; }

@keyframes fadeInOut {
    0%, 100% { opacity: 0; transform: scale(0.8); }
    50% { opacity: 0.8; transform: scale(1); }
}

@keyframes drawLine {
    0% { stroke-dasharray: 2000; stroke-dashoffset: 2000; }
    50% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: -2000; }
}
/* ================================
   4.1 Navigation Styles
=============================== */
.nav-container,
.hero-content {
    position: relative;
    z-index: 5;
}

nav {
    display: flex;
    justify-content: center;
    padding: 1rem 0;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.nav-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    padding: 0 1rem;
}

nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
    font-size: 1rem;
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease-in-out;
}

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

nav a:hover::after {
    width: 100%;
}

nav a.button {
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow-sm);
}

nav a.button::after {
    display: none;
}

nav a.button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--gradient-hover);
    color: white;
}

/* Active link styles */
nav a.active {
    color: var(--primary-color);
}

nav a.active::after {
    width: 100%;
}

/* Sticky navigation styles */
.nav-container.sticky {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

/* Responsive styles */
@media (max-width: 1024px) {
    .nav-links {
        gap: 1.5rem;
    }

    .animated-header h1 {
        font-size: 4.5rem;
    }

    .sliding-text {
        font-size: 1.75rem;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0.5rem;
    }

    nav {
        padding: 0.8rem 0;
    }

    .nav-links {
        gap: 1rem;
    }
    
    nav a {
        font-size: 0.9rem;
    }

    nav a.button {
        padding: 0.4rem 0.8rem;
    }

    .animated-header h1 {
        font-size: 4rem;
    }

    .hero-content {
        padding: 1.5rem 1rem;
    }

    .sliding-text {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    nav {
        padding: 1rem 0;
    }

    .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 0.8rem;
        padding: 0.5rem;
    }

    nav a {
        font-size: 0.95rem;
    }

    nav a.button {
        width: 100%;
        text-align: center;
        padding: 0.6rem 1.2rem;
    }

    .animated-header h1 {
        font-size: 3rem;
    }

    .title-text {
        font-size: 1.2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .sliding-text {
        font-size: 1.25rem;
    }
}
/* ================================
   5. Work Section
=============================== */
.work-section {
    padding: 4rem 2rem;
    background-color: var(--card-bg);
}

.carousel-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    padding: 0 4rem;
}

.modern-carousel {
    width: 100%;
    position: relative;
    overflow: visible;
}

.carousel-inner {
    display: flex;
    transition: transform 0.5s ease-in-out;
    gap: 2rem;
    flex-wrap: nowrap;
}

.carousel-item {
    min-width: 100%;
    flex-shrink: 0;
    scroll-snap-align: start;
}

.project-card {
    width: 100%;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    height: 100%;
}

.project-card:hover {
    transform: translateY(-5px);
}

.chart-description {
    padding-right: 1rem;
}

.chart-description h2 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.75rem;
}

.chart-description h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.chart-description p {
    color: var(--light-text);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: 1.1rem;
}

.chart-figure {
    width: 100%;
    min-height: 400px;
    background: var(--background-color);
    border-radius: var(--border-radius);
    overflow: visible;
    position: relative;
}

.carousel-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    z-index: 10;
    width: calc(100% + 8rem);
    margin-left: -4rem;
}

.carousel-button {
    pointer-events: auto;
    opacity: 0.8;
    background: var(--gradient-primary);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    margin: 0 1rem;
}

.carousel-button:hover {
    opacity: 1;
    background: var(--gradient-hover);
    transform: translateY(-2px);
}

.carousel-button i {
    font-size: 1.2rem;
}

.chart-controls {
    margin-top: 1rem;
}

.chart-controls label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 500;
}

.year-slider {
    width: 100%;
    margin-bottom: 0.5rem;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
    outline: none;
}

.year-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
}

.year-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.year-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
}

.year-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
}

.year-display {
    color: var(--text-color);
    font-weight: 500;
    display: inline-block;
    min-width: 4rem;
    text-align: left;
}

/* Responsive adjustments */
@media (max-width: 1200px) {
    .project-card {
        grid-template-columns: 250px 1fr;
    }
    
    .chart-description {
        padding-right: 1.5rem;
    }
}

@media (max-width: 992px) {
    .project-card {
        grid-template-columns: 1fr;
    }
    
    .chart-description {
        padding-right: 0;
        padding-bottom: 1.5rem;
    }

    .carousel-container {
        padding: 0 3rem;
    }

    .carousel-controls {
        width: calc(100% + 6rem);
        margin-left: -3rem;
    }
}

@media (max-width: 768px) {
    .carousel-container {
        padding: 0 2rem;
    }

    .carousel-controls {
        width: calc(100% + 4rem);
        margin-left: -2rem;
    }
    
    .carousel-button {
        width: 35px;
        height: 35px;
        margin: 0 0.5rem;
    }
    
    .chart-description h2 {
        font-size: 1.5rem;
    }
    
    .chart-description h3 {
        font-size: 1.3rem;
    }
    
    .chart-description p {
        font-size: 1rem;
    }
    
    .chart-figure {
        min-height: 300px;
    }
}
/* ================================
   6. About Section
=============================== */
.about-section {
    padding: 6rem 2rem;
    background-color: var(--background-color);
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text {
    padding-right: 2rem;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--light-text);
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-images {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.profile-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.image-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 400px; /* Set fixed height for row */
    gap: 1rem;
}

.grid-image {
    width: 100%;
    height: 100%; /* Fill the container height */
    object-fit: cover;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

/* Specific size for second image */
.grid-image:last-child {
    height: 200px; /* Shorter height for the second image */
    align-self: start; /* Align to top */
}

.grid-image:hover {
    transform: scale(1.05);
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about-text {
        padding-right: 0;
    }

    .image-grid {
        grid-template-rows: 350px; /* Slightly shorter on tablets */
    }

    .grid-image:last-child {
        height: 175px;
    }
}

@media (max-width: 768px) {
    .image-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        gap: 1rem;
    }

    .grid-image,
    .grid-image:last-child {
        height: 250px;
    }
}
/* ================================
   7. Contact Section
=============================== */
.contact-section {
    padding: 6rem 2rem;
    background-color: var(--card-bg);
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.contact-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    font-weight: 500;
}

.contact-button:hover {
    background: var(--gradient-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.contact-button i {
    font-size: 1.2rem;
}

/* ================================
   8. Footer
=============================== */
footer {
    padding: 2rem;
    text-align: center;
    background-color: var(--background-color);
    border-top: 1px solid var(--border-color);
}

footer p {
    color: var(--light-text);
    font-size: 0.9rem;
}

/* ================================
   9. Social Links
=============================== */
.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

.social-icon {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.social-icon:hover {
    background: var(--gradient-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Additional responsive styles for the new sections */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about-text {
        padding-right: 0;
    }

    .profile-image {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .contact-links {
        flex-direction: column;
        align-items: center;
    }

    .contact-button {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .grid-image {
        height: 150px;
    }
}

@media (max-width: 480px) {
    .image-grid {
        grid-template-columns: 1fr;
    }

    .grid-image {
        height: 200px;
    }

    .social-links {
        gap: 1rem;
    }
}
/* ================================
   10. Animations
=============================== */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ================================
   11. Responsive Design
=============================== */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-text {
        padding-right: 0;
    }

    .hero-content h1 {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .contact-links {
        flex-direction: column;
        align-items: center;
    }

    .project-card {
        padding: 1rem;
    }

    .chart-figure {
        min-height: 300px;
    }
}

@media (max-width: 480px) {
    .nav-links {
        flex-direction: column;
        align-items: center;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .title-text {
        font-size: 1.2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .image-grid {
        grid-template-columns: 1fr;
    }
}