:root {
    --bg-color: #F4F0EB;
    --text-main: #3D3935;
    --text-heading: #1C1A18;
    --accent-color: #D27D60;
    --accent-dark: #B56247;
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(0, 0, 0, 0.08);
    --nav-bg: rgba(244, 240, 235, 0.85);
    --tag-bg: rgba(210, 125, 96, 0.1);
    --tag-border: rgba(210, 125, 96, 0.2);
    --model-bg: rgba(0, 0, 0, 0.05);
    --shadow-color: rgba(0, 0, 0, 0.15);
    --hover-shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-main: #d4d0cb;
    --text-heading: #f0ece7;
    --accent-color: #e8957a;
    --accent-dark: #d4775c;
    --glass-bg: rgba(30, 30, 30, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --nav-bg: rgba(18, 18, 18, 0.92);
    --tag-bg: rgba(232, 149, 122, 0.12);
    --tag-border: rgba(232, 149, 122, 0.25);
    --model-bg: rgba(255, 255, 255, 0.04);
    --shadow-color: rgba(0, 0, 0, 0.4);
    --hover-shadow: rgba(0, 0, 0, 0.3);
}

/* Smooth theme transition */
body,
nav,
.glass-panel,
.tags span,
.btn,
.btn-small,
footer {
    transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    color: var(--text-heading);
}

/* Nav */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: 2px solid var(--glass-border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-main);
    font-size: 1.1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: rotate(15deg) scale(1.1);
    box-shadow: 0 0 15px rgba(210, 125, 96, 0.3);
}

.theme-toggle i {
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.theme-toggle.rotating i {
    transform: rotate(360deg);
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--text-main);
    letter-spacing: 2px;
}

.logo .dot {
    color: var(--accent-color);
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--text-heading);
    cursor: pointer;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 5% 2rem 5%;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, var(--accent-dark) 0%, transparent 70%);
    opacity: 0.2;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    filter: blur(50px);
}

.hero-content-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    width: 100%;
    gap: 4rem;
}

.hero-text {
    flex: 1;
    text-align: left;
}

.hero-text h1 {
    font-size: 4rem;
    margin-bottom: 0.5rem;
}

.hero-text .subtitle {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.hero-text .summary {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.project-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.hero-image img {
    max-width: 100%;
    border-radius: 20px;
    box-shadow: 0 10px 30px var(--shadow-color);
    border: 1px solid var(--glass-border);
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border: 1px solid var(--accent-color);
    border-radius: 30px;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    background: transparent;
}

.btn:hover, .btn-primary {
    background: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 15px var(--accent-color);
}

.btn-small {
    padding: 0.5rem 1rem;
    border: 1px solid var(--accent-color);
    border-radius: 20px;
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.btn-small:hover {
    background: var(--accent-color);
    color: var(--bg-color);
}

.contact-info {
    display: flex;
    gap: 2rem;
    font-size: 0.9rem;
    color: var(--text-main);
}

.contact-info i {
    color: var(--accent-color);
    margin-right: 0.5rem;
}

/* Sections */
.section {
    padding: 5rem 0;
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.section > *:not(.section-title) {
    text-align: left;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent-color);
    margin: 10px auto 0;
}

/* Glass Panel Utility */
.glass-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    border-color: rgba(210, 125, 96, 0.3);
}

/* Timeline Layout Container */
.timeline-container {
    max-width: 100%;
    margin: 0 auto;
}

/* Timeline */
.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    width: 2px;
    background: var(--glass-border);
    top: 0;
    bottom: 0;
    left: 20px;
}

.timeline-item {
    position: relative;
    padding-left: 50px;
    margin-bottom: 2rem;
    z-index: 1;
}

.timeline-item:hover, .timeline-item.touch-active {
    z-index: 1000;
}

.timeline-dot {
    position: absolute;
    width: 15px;
    height: 15px;
    background: var(--accent-color);
    border-radius: 50%;
    left: 13.5px;
    top: 5px;
    box-shadow: 0 0 10px var(--accent-color);
}

.timeline-content h3 {
    color: var(--accent-color);
    margin-bottom: 0.2rem;
}

.timeline-content h4 {
    font-size: 1.1rem;
    color: var(--text-heading);
    font-weight: 400;
}

.timeline-content .date {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--accent-dark);
    margin-bottom: 1rem;
}

/* Education Specific */
.edu-content-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.edu-text {
    flex: 1;
}

.edu-logo {
    flex-shrink: 0;
}

.edu-logo img {
    max-width: 250px;
    height: auto;
    border-radius: 10px;
    object-fit: contain;
}

@media (max-width: 768px) {
    .edu-content-flex {
        flex-direction: column-reverse;
        align-items: flex-start;
    }
    
    .edu-logo img {
        max-width: 180px;
        margin-bottom: 1rem;
    }
}

/* Event Gallery */
.event-gallery {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.event-gallery .zoom-img {
    height: 100px;
    width: auto;
    max-width: 100%;
    object-fit: cover;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    border: 1px solid var(--glass-border);
}

.event-gallery .zoom-img:hover, .event-gallery .zoom-img.touch-active {
    transform: scale(2.5);
    z-index: 100;
    position: relative;
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
    border-color: var(--accent-color);
}

/* Zoom hint on gallery images */
.event-gallery {
    position: relative;
}

.zoom-img {
    position: relative;
}

.event-gallery .zoom-img::after {
    content: '\f00e';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    bottom: 6px;
    right: 6px;
    background: rgba(0,0,0,0.55);
    color: #fff;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    opacity: 0.8;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.event-gallery .zoom-img:hover::after,
.event-gallery .zoom-img.touch-active::after {
    opacity: 0;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    align-items: stretch;
    transition: grid-template-columns 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

@media (min-width: 901px) {
    .projects-grid:has(.project-card:nth-child(3n+1):hover) {
        grid-template-columns: 2.8fr 1fr 1fr;
    }
    .projects-grid:has(.project-card:nth-child(3n+2):hover) {
        grid-template-columns: 1fr 2.8fr 1fr;
    }
    .projects-grid:has(.project-card:nth-child(3n+3):hover) {
        grid-template-columns: 1fr 1fr 2.8fr;
    }
}

.project-card {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 480px;
    height: auto;
    position: relative;
    z-index: 1;
    transition: all 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.project-card:hover, .project-card.touch-active {
    min-height: 600px;
    transform: translateY(-10px);
    z-index: 10;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    border-color: var(--accent-color);
}

.project-img {
    width: 100%;
    height: 200px;
    overflow: hidden;
    transition: height 0.6s cubic-bezier(0.25, 1, 0.5, 1);
    position: relative;
}

.project-card:hover .project-img, .project-card.touch-active .project-img {
    height: 200px;
}

.project-img img, .project-img iframe, .project-img video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: none;
    transition: transform 0.5s ease;
}

.project-card:hover .project-img img, .project-card.touch-active .project-img img {
    transform: scale(1.1);
}

.project-info {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.project-info p {
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

/* Pin Code button to bottom */
.project-links {
    margin-top: auto;
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    padding-top: 0.5rem;
}

.project-card:hover .project-info, .project-card.touch-active .project-info {
    overflow-y: auto;
}

.hover-media {
    display: none;
    margin-top: 1rem;
    margin-bottom: 1rem;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.project-card:hover .hover-media, .project-card.touch-active .hover-media {
    display: block;
}

/* Custom Scrollbar for Project Info */
.project-info::-webkit-scrollbar {
    width: 6px;
}
.project-info::-webkit-scrollbar-track {
    background: transparent;
}
.project-info::-webkit-scrollbar-thumb {
    background: var(--accent-dark);
    border-radius: 10px;
}

.project-info h3 {
    margin-bottom: 0.5rem;
}

.project-info .date {
    font-size: 0.85rem;
    color: var(--accent-dark);
    margin-bottom: 1rem;
}


.project-img::after {
    content: '\f065';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    opacity: 0.7;
    transition: all 0.3s ease;
    animation: pulseHint 2s ease-in-out infinite;
}

.project-card:hover .project-img::after,
.project-card.touch-active .project-img::after {
    opacity: 0;
    pointer-events: none;
}

@keyframes pulseHint {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.15); opacity: 1; }
}

/* Skills */
.skills-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.skill-category h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-category h3 i {
    color: var(--accent-color);
}

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

.tags span {
    background: var(--tag-bg);
    color: var(--text-main);
    padding: 0.4rem 0.9rem;
    border-radius: 15px;
    font-size: 0.85rem;
    border: 1px solid var(--tag-border);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.3s ease;
}

.tags span:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--hover-shadow);
    border-color: var(--accent-color);
}

/* Skill Icons (img-based) */
.skill-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    object-fit: contain;
    border-radius: 3px;
}

/* Intern Media Containers */
.intern-media {
    display: none;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 1.5rem;
    animation: fadeIn 0.5s ease;
}

.timeline-item:hover .intern-media, .timeline-item.touch-active .intern-media {
    display: flex;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: 10px;
    border: 1px solid var(--glass-border);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.model-viewer-container {
    width: 100%;
    height: 350px;
    background: var(--model-bg);
    border-radius: 10px;
    border: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
    cursor: grab;
}

.model-viewer-container:active {
    cursor: grabbing;
}

.loading-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 600;
    color: var(--accent-dark);
    z-index: 10;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--glass-border);
    margin-top: 3rem;
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

/* Intern Details */
.intern-details {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.detail-block h5 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-block ul {
    list-style: none;
    padding-left: 0;
}

.detail-block ul li {
    position: relative;
    padding-left: 1.2rem;
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
    line-height: 1.5;
}

.detail-block ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* Language Bars */
.language-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.language-item {
    width: 100%;
}

.lang-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.4rem;
}

.lang-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-heading);
}

.lang-level {
    font-size: 0.8rem;
    color: var(--accent-dark);
    font-weight: 400;
}

.lang-bar {
    width: 100%;
    height: 8px;
    background: var(--tag-bg);
    border-radius: 10px;
    overflow: hidden;
}

.lang-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-dark));
    border-radius: 10px;
    transition: width 1s ease-out;
}

/* Responsive */
@media (max-width: 900px) {
    .experience-container, .skills-container, .projects-grid {
        grid-template-columns: 1fr;
    }
    .hero-content-wrapper {
        flex-direction: column;
        text-align: center;
    }
    .hero-text {
        text-align: center;
    }
    .contact-info, .social-links {
        justify-content: center;
    }
}
@media (max-width: 768px) {
    nav {
        flex-direction: row;
        justify-content: space-between;
        padding: 1.5rem 5%;
        flex-wrap: wrap;
    }
    .menu-toggle {
        display: block;
    }
    .nav-links {
        display: none;
        flex-direction: column;
        position: static;
        left: auto;
        transform: none;
        width: 100%;
        background: var(--nav-bg);
        backdrop-filter: blur(15px);
        padding: 1rem 0;
        border-bottom: 1px solid var(--glass-border);
        box-shadow: 0 10px 20px var(--hover-shadow);
        z-index: 999;
    }
    .nav-links.active {
        display: flex;
    }
    .nav-links li {
        text-align: center;
        margin: 1rem 0;
    }
    .hero-text h1 {
        font-size: 2.5rem;
    }
    .theme-toggle {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
}