/* === Portfolio CSS === */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&family=Lora:ital,wght@0,400..700;1,400..700&family=Merriweather:ital,opsz,wght@0,18..144,300..900;1,18..144,300..900&display=swap');


html{
    scroll-behavior: smooth;
}
/* --- Global Reset and Body Styles --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    transition: color 0.4s, background-color 0.4s;
    overflow-x: hidden;
    position: relative;
}

body.light {
    color: #1a1a1a;
    background-color: #f4f4f0;
}

body.dark {
    color: #f4f4f0;
    background-color: #1a1a1a;
}

/* --- Header Styles --- */
.portfolio-header {
    position: fixed;
    width: 100%;
    color: white;
    padding: 1rem;
    z-index: 1000;
    transition: padding 0.7s ease;
}

.header-title {
    animation: glow-pulse 1.5s infinite alternate;
    transition: text-shadow 0.3s, color 0.3s;
}



.header-icon {
    height: 30px;
    border-radius: 30px;
    text-shadow:
        0 0 8px #ff00b3,
        0 0 16px #ff00b3,
        0 0 32px #ff00b3,
        0 0 64px #ff00b3;
    animation: glow-pulse 1.5s infinite alternate;
    transition: text-shadow 0.3s, color 0.3s;
    filter: invert();
}

/* Add or update these styles for .header-content */
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 100%;
    min-height: 50px;
    margin: auto;
    padding: 0 40px;
     flex-wrap: wrap;
    gap: 1.5rem;
    overflow: hidden;
    background: transparent; /* Fully transparent background */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 24px;
    box-shadow: 0 4px 32px rgba(248, 247, 247, 0.337);
    transition: height 0.7s ease, opacity 0.7s ease, transform 0.7s ease, background 0.4s;
}

.portfolio-header.hide-on-scroll {
    transform: translateY(-120%);
    transition: transform 0.5s cubic-bezier(.77,0,.18,1);
}
.portfolio-header {
    transition: transform 0.5s cubic-bezier(.77,0,.18,1);
}

.header-content :hover {
    transform : translate3d(0)
}

.header-content ::before {
    transform: translateY(0);
}

.header-content ::after {
    transform: translateY(-73.3407px);
}

.header-content h2,
.header-content nav,
.header-content .theme-slider {
    transition: opacity 0.3s ease, transform 0.3s ease;
    text-align: center;
}

.header-content h2 {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 2em;
    flex-shrink: 0;
    text-align: center;
    left: 50%;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

nav li {
    margin: 0;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s, filter 0.3s, transform 0.3s;
}

nav a:hover {
    color: #00ff88;
    filter: drop-shadow(0 0 16px #00ff88) drop-shadow(0 0 32px #00ff88);
    transform:scale(1.08);
}

#show-header-btn {
    display: none;
    background: #00ff88;
    /* color: #1a1a1a; */
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
    line-height: 48px;
    text-align: center;
    cursor: pointer;
    z-index: 1100;
    transition: opacity 0.3s ease, box-shadow 0.3s ease, transform 0.5s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    transform-origin: center center;
    opacity: 1;
}

#show-header-btn.bottom-position {
    transition: width 0.4s ease-in-out;
    position: relative;
    z-index: 1101;
    margin: 1rem auto 0;
}

#show-header-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 255, 136, 0.6);
}

.download-icon :hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(234, 0, 255, 0.676);
    filter: invert();
}

/* --- Theme Slider --- */
.theme-slider {
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-label1 {
    font-size: 12px;
    font-weight: bold;
    color: #ffffff;
    user-select: none;
}
.theme-label {
    font-size: 12px;
    font-weight: bold;
    color: #ffffff;
    user-select: none;
}

.switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #ccc;
    transition: background 0.3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px; width: 20px;
    left: 2px; bottom: 2px;
    background-color: white;
    transition: transform 0.3s;
    border-radius: 50%;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.switch input:checked + .slider {
    background-color: #222;
}

.switch input:checked + .slider:before {
    transform: translateX(24px);
    background-color: #ffffff;
}

/* --- Hero Section --- */
#hero {
    height: 375px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 10;
}

#hero h1 {
    font-size: 50px;
    margin-bottom: 2rem;
    font-weight: 900;
    line-height: 60px;
    background: linear-gradient(to right, #00ff88, #007f70);
    color: transparent;
    -webkit-background-clip: text;
    background-clip: text; /* Added for cross-browser compatibility */
    text-shadow: 0 0 60px rgba(0, 255, 136, 0.457); /* Corrected color format */
    animation: anime 1s;
}

@keyframes anime {
    100% {
        text-shadow: 0 0 60px rgba(0, 127, 112, 0.457); /* Corrected color format */
    }
}


#hero p {
    display: inline-block;
    font-size: 1.25rem;
    max-width: max-content;
    white-space: nowrap;
    overflow: hidden;
    border-right: 2px solid #00ff88;
    animation: typing 5s steps(36, end) infinite, blink-caret 0.75s infinite;
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink-caret {
    0%, 100% { border-color: transparent; }
    50% { border-color: #00ff88; }
}

#bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
}

/* --- Biodata Section --- */
#biodata {
    padding: 100px 20px;
    max-width: 1280px;
    margin: auto;
    display: flex;
    align-items: center;
    gap: 30px;
    position: relative;
    z-index: 10;
}

.profile-pic {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    overflow: hidden;
    transition: box-shadow 0.3s, transform 0.3s;
    box-shadow: 0 2px 8px rgba(0, 255, 136, 0.15);
    cursor: pointer;
}

.profile-pic img {
    border-radius: 50%;
    transition: transform 0.3s, box-shadow 0.3s, filter 0.3s;
    width: 200px;
    height: 200px;
    object-fit: cover;
}

.profile-pic:hover {
    box-shadow: 0 8px 32px #00ff88cc, 0 2px 12px #1a1a1a55;
    transform: scale(1.08);
}

.profile-pic:hover img {
    transform: scale(1.12);
    filter: brightness(1.1) saturate(1.2) drop-shadow(0 0 12px #00ff88aa);
}

.bio-info h2 {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.bio-info p {
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
}

.university {
    font-family: 'Merriweather', serif;
    color: #00ff88;
    text-decoration: none;
    font-weight: 600;
}

/* --- Projects Section --- */
#projects {
    padding: 100px 20px;
    max-width: 1280px;
    margin: auto;
    min-height: 100px;
    opacity: 0;
    transform: translateY(60px);
    position: relative;
    z-index: 10;
}

.projects {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 2rem;
      margin-top: 40px;
    }

.project {
      position: relative;
      background: rgba(0, 0, 0, 0.7);
      padding: 1.5rem;
      border-radius: 12px;
      cursor: pointer;
      overflow: hidden;
      transition: transform 0.4s ease;
      border: 1px solid #444;
}

body.light .project {
    background: rgba(255, 255, 255, 0.9);
}

.project img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.project h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.project p {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

#projects > h2,
#about > h2,
#skills >h2,
#languages > h2,
#certificates > h2 {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
    display: block;
    width: 100%;
}

.project a {
    color: #00ff88;
    text-decoration: none;
    font-weight: 500;
    display: inline-block;
    margin-top: 0.5rem;
}

.project a:hover {
    text-decoration: underline;
}

.project canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.project:hover canvas {
    opacity: 0.8;
}

.project:hover {
    transform: translateY(-12px);
}

/* --- About Section --- */
#about {
    font-size: 2.8rem;
    margin-bottom: 2rem;
    font-weight: 900;
    line-height: 1.1;
    /* background: linear-gradient(90deg, #00ff88 30%, #007f70 100%); */
    color: white;
    -webkit-background-clip: text;
    background-clip: text;
    /* text-shadow: 0 0 32px #00ff8855, 0 0 8px #007f7088; */
    /* animation: about-glow 2s infinite alternate; */
    text-align: center;
    letter-spacing: 2px;
    /* padding-top: 40px; */
    /* padding-bottom: 10px; */
    border-radius: 18px 18px 0 0;
    /* border-bottom: 2px solid #00ff88; */
    position: relative;
    z-index: 11;
}

/* @keyframes about-glow {
    from {
        text-shadow: 0 0 32px #00ff8855, 0 0 8px #007f7088;
    }
    to {
        text-shadow: 0 0 48px #00ff88cc, 0 0 16px #007f70cc;
    }
} */

#about-para {
    font-family: sans-serif;
    font-weight: bold;
    padding: 1.25rem;
    max-width: 1280px;
    margin: auto auto auto auto;
    position: relative;
    z-index: 10;
    opacity: 1;
    text-align: justify;
    transform: none;
    background: rgba(0, 0, 0, 0.813);
    border-radius: 24px;
    color: #f4f4f0;
    font-size: 20px;
    line-height: 1.7;
    letter-spacing: 0.5px;
    border-top: none;
}

body.light #about-para {
    background: rgba(255,255,255,0.85);
    color: #1a1a1a;
    box-shadow: 0 8px 32px rgba(0,255,136,0.08), 0 2px 8px #00ff8855;
}

#about-para::before {
    content: '';
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 6px;
    background: linear-gradient(90deg, #00ff88 30%, #007f70 100%);
    border-radius: 3px;
    opacity: 0.7;
    display: none;
}

#about-para p {
    margin-bottom: 1.2em;
    font-size: 1.15em;
}

#about-para strong, #about-para b {
    color: #00ff88;
    font-weight: bold;
}

/* @media (max-width: 900px) {
    #about {
        font-size: 2rem;
        padding-top: 24px;
    }
    #about-para {
        padding: 28px 10px 28px 10px;
        font-size: 1.05rem;
    }
} */

/* --- Skills Section --- */
#skills {
    padding: 100px 20px;
    max-width: 1280px;
    margin: auto;
    position: relative;
    z-index: 10;
    opacity: 0;
    transform: translateY(60px);
    min-height: 80vh;
}

#skills h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
}

.skills-container {
    background: rgba(0, 0, 0, 0.7);
    padding: 2rem;
    border-radius: 12px;
}

body.light .skills-container {
    background: rgba(255, 255, 255, 0.9);
}

.skill {
    margin-bottom: 1.5rem;
}

.skill:last-child {
    margin-bottom: 0;
}

.skill-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

body.light .progress-bar {
    background: rgba(0, 0, 0, 0.2);
}

.progress {
    height: 100%;
    background: #00ff88;
    width: 0;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    position: relative;
}

.progress span {
    font-size: 0.9rem;
    font-weight: 500;
    padding-right: 8px;
    opacity: 0;
}

body.light .progress span {
    color: #1a1a1a;
}

body.dark .progress span {
    color: #f4f4f0;
}

.progress::after {
    content: attr(data-percentage) '%';
    position: absolute;
    right: 10px;
    top: -30px;
    font-size: 1rem;
    font-weight: 500;
}

body.light .progress::after {
    color: #1a1a1a;
}

body.dark .progress::after {
    color: #f4f4f0;
}

/* --- Languages Section --- */
#languages {
    padding: 100px 20px;
    max-width: 1280px;
    margin: auto;
    position: relative;
    z-index: 10;
    opacity: 0;
    transform: translateY(60px);
    min-height: 80vh;
}

#languages h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
}

.languages-container {
    background: rgba(0, 0, 0, 0.7);
    padding: 2rem;
    border-radius: 12px;
}

body.light .languages-container {
    background: rgba(255, 255, 255, 0.9);
}

.languages {
    margin-bottom: 1.5rem;
}

.languages:last-child {
    margin-bottom: 0;
}

.languages-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* --- Programming Languages Logos --- */
#programming-languages .logos {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
    gap: 16px;
    border-radius: 40px;
    box-shadow: white;
    
}

#programming-languages .logos img {
    border-radius: 40px;
    display: inline-block;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

#programming-languages .logos img:hover {
    border-radius: 40px;
    transform: scale(1.18) rotate(-6deg);
    box-shadow: 0 4px 24px #00ff88aa, 0 1.5px 8px #1a1a1a55;
    z-index: 2;
}

/* --- Certificates Section --- */
#certificates {
    padding: 100px 20px;
    max-width: 1280px;
    margin: auto;
    min-height: 80vh;
    opacity: 0;
    transform: translateY(60px);
    position: relative;
    z-index: 10;
}

.certificates-container {
    background: rgba(150, 150, 150, 0.2);
    padding: 2.5rem;
    border-radius: 12px;
}

body.light .certificates-container {
    background: rgba(150, 150, 150, 0.2);
}

body.dark .certificates-container {
    background: rgba(20, 20, 20, 0.4);
}

.certificates-container h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.certificates {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 40px;
}

.certificate {
    background: rgba(150, 150, 150, 0.25);
    padding: 1.75rem;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.4s ease;
}

body.light .certificate {
    background: rgba(150, 150, 150, 0.25);
}

body.dark .certificate {
    background: rgba(20, 20, 20, 0.45);
}

.certificate img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 1rem;
    transition: filter 0.3s, transform 0.3s, box-shadow 0.3s;
}

.certificate img:hover {
    filter: drop-shadow(0 0 12px #00ff88) drop-shadow(0 0 24px #00ff88);
    transform: scale(1.08);
}

.certificate h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.certificate p {
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.certificate a {
    color: #00ff88;
    text-decoration: none;
    font-weight: 500;
    display: inline-block;
    margin-top: 0.5rem;
    transition: filter 0.3s, transform 0.3s, box-shadow 0.3s;
}

.certificate a:hover {
    text-decoration: underline;
    filter: drop-shadow(0 0 12px #00ff88) drop-shadow(0 0 24px #00ff88);
    transform: scale(1.08);
}

.certificate:hover {
    transform: translateY(-12px);
}

/* --- Contact Section --- */
#contact {
    padding: 100px 20px;
    max-width: 1280px;
    margin: auto;
    min-height: 80vh;
    opacity: 0;
    transform: translateY(60px);
    position: relative;
    z-index: 10;
}

.contact-container {
    background: rgba(0, 0, 0, 0.7);
    padding: 2.5rem;
    border-radius: 12px;
    max-width: 600px;
    margin: auto;
}

body.light .contact-container {
    background: rgba(255, 255, 255, 0.9);
}

.contact-container h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.contact-container form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.contact-container input,
.contact-container textarea {
    padding: 0.75rem;
    border: 1px solid #00ff88;
    border-radius: 8px;
    background: transparent;
    color: inherit;
    font-size: 1rem;
}

.contact-container textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-container button {
    padding: 0.75rem;
    background: #00ff88;
    color: #1a1a1a;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

.contact-container button:hover {
    background: #00cc70;
}

/* --- Chatbox Styles (Classic Glassy Design) --- */
    /* Chatbot overlay styles */
    .chat-toggle-btn {
        position: fixed;
        bottom: 32px;
        right: 32px;
        z-index: 1001;
        background: linear-gradient(135deg, #00ffb3 60%, #0077ff 100%);
        color: #fff;
        border: none;
        border-radius: 50%;
        width: 60px;
        height: 60px;
        font-size: 2em;
        box-shadow: 0 4px 24px rgba(0,0,0,0.18);
        cursor: pointer;
        transition: background 0.2s;
    }
    .chat-toggle-btn:hover {
        transform: scale(1.18) rotate(-6deg);
        box-shadow: 0 4px 24px #00ff88aa, 0 1.5px 8px #1183dad4;
    }
    .chatbox-overlay {
        display: none;
        flex-direction: column;
        position: fixed;
        bottom: 32px;
        right: 32px;
        width: 350px;
        max-width: 90vw;
        height: 500px;
        max-height: 80vh;
        background: rgba(30, 30, 40, 0.98);
        border-radius: 18px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.25);
        z-index: 1002;
        overflow: hidden;
        animation: chatbox-pop 0.25s;
    }
    @keyframes chatbox-pop {
        0% { transform: scale(0.8); opacity: 0; }
        100% { transform: scale(1); opacity: 1; }
    }
    #chatbox-header {
        background: linear-gradient(90deg, #00ffb3 60%, #0077ff 100%);
        color: #fff;
        padding: 16px;
        font-size: 1.2em;
        font-weight: bold;
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-top-left-radius: 18px;
        border-top-right-radius: 18px;
    }
    #chatbox-close {
        background: none;
        border: none;
        color: #fff;
        font-size: 1.2em;
        cursor: pointer;
        transition: color 0.2s;
    }
    #chatbox-close:hover {
        color: #222;
    }
    #chatbox-body {
        flex: 1;
        padding: 18px 12px;
        overflow-y: auto;
        background: #23243a;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .chat-message {
        max-width: 80%;
        padding: 10px 16px;
        border-radius: 18px;
        margin-bottom: 4px;
        font-size: 1em;
        word-break: break-word;
        box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        animation: fadeInMsg 0.2s;
    }
    @keyframes fadeInMsg {
        from { opacity: 0; transform: translateY(10px);}
        to { opacity: 1; transform: translateY(0);}
    }
    .chat-message.user {
        align-self: flex-end;
        background: linear-gradient(135deg, #00ffb3 60%, #0077ff 100%);
        color: #fff;
    }
    .chat-message.bot {
        align-self: flex-start;
        background: #fff;
        color: #23243a;
        border: 1px solid #00ffb3;
    }
    #chatbox-input {
        display: flex;
        padding: 12px;
        background: #23243a;
        border-bottom-left-radius: 18px;
        border-bottom-right-radius: 18px;
        gap: 8px;
    }
    #chat-input {
        flex: 1;
        border: none;
        border-radius: 12px;
        padding: 10px 14px;
        font-size: 1em;
        outline: none;
        background: #f6f6f6;
        color: #23243a;
        transition: box-shadow 0.2s;
    }
    #chat-input:focus {
        box-shadow: 0 0 0 2px #00ffb3;
    }
    #chat-send-btn {
        background: linear-gradient(135deg, #00ffb3 60%, #0077ff 100%);
        color: #fff;
        border: none;
        border-radius: 12px;
        padding: 0 18px;
        font-size: 1em;
        cursor: pointer;
        transition: background 0.2s;
    }
    #chat-send-btn:hover {
        background: linear-gradient(135deg, #0077ff 60%, #00ffb3 100%);
    }
    @media (max-width: 600px) {
        .chatbox-overlay, #chatbox {
            width: 98vw !important;
            height: 60vh !important;
            right: 1vw !important;
            bottom: 1vw !important;
            border-radius: 12px !important;
        }
        .chat-toggle-btn {
            right: 2vw !important;
            bottom: 2vw !important;
        }
    }
/* --- Social Links Section --- */
#social-links {
    padding: 40px 20px;
    max-width: 80%;
    margin: auto;
    position: relative;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.7);
}

body.light #social-links {
    background: rgba(255, 255, 255, 0.9);
    color: #1a1a1a;
}

.social-container {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.3);
}

body.light .social-container {
    background: rgba(0, 0, 0, 0.1);
}

.social-container h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem 0;
}

.social-links a {
    color: inherit;
    font-size: 2rem;
    transition: color 0.3s ease, transform 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.social-links a:hover {
    color: #00ff88;
    transform: scale(1.2);
}

.social-links i {
    vertical-align: middle;
    margin-right: 5px;
}

.social-links a span {
    font-size: 1rem;
    display: none;
}

.social-links a:hover span {
    display: inline;
}

.social-icons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    margin: 20px 0;
    filter: drop-shadow(0 0 10px #00ffff);
}

.social-icons a img {
    vertical-align: middle;
}

.social-text-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 25px;
    margin-top: 10px;
}

.social-text-links a {
    font-size: small;
    color: #00ffb3;
    text-decoration: none;
    transition: color 0.2s;
}

.social-text-links a:hover {
    color: #fff;
}

/* --- Interactive Buttons --- */
.center-btn {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 32px 0 24px;
}

.whatsapp-link {
    background: #25d366;
    color: #fff;
    padding: 10px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: background 0.2s;
}

.whatsapp-link:hover {
    background: #128c7e;
}

.resume-download-btn {
    display: inline-block;
    background: #00ff88;
    color: #1a1a1a;
    border: none;
    border-radius: 6px;
    padding: 10px 28px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, color 0.2s, filter 0.3s, transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 8px #00ff8855;
}

.resume-download-btn:hover {
    background: #1a1a1a;
    color: #00ff88;
    filter: drop-shadow(0 0 8px #00ff88) drop-shadow(0 0 16px #00ff88);
    transform: scale(1.07);
    box-shadow: 0 4px 24px #00ff88aa;
}

button[type="submit"] {
    background: #00ff88;
    color: #1a1a1a;
    border: none;
    border-radius: 6px;
    padding: 10px 28px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, filter 0.3s, transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 8px #00ff8855;
}

button:hover {
    background: #1a1a1a;
    color: #00ff88;
    filter: drop-shadow(0 0 8px #00ff88) drop-shadow(0 0 16px #00ff88);
    transform: scale(1.07);
    box-shadow: 0 4px 24px #00ff88aa;
}

/* --- Main Logo --- */
.main-logo {
    transition: filter 0.3s, transform 0.3s;
}

.main-logo:hover {
    filter: drop-shadow(0 0 16px #00ff88);
    transform: scale(1.15);
}

/* --- Media Queries --- */
@media (max-width: 900px) {
    .header-content {
        display: none;
    }

    .portfolio-header.expanded .header-content {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background: rgba(0, 0, 0, 0.95);
        padding: 2rem 1rem;
        height: 300px;
        width: 100vw;
        position: absolute;
        top: 0;
        left: 0;
        height: auto;
        opacity: 1;
    }
  .portfolio-header.expanded {
    padding-bottom: 4rem;
  }

  .header-title {
    font-size: 2em;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  position: relative;
  z-index: 1001;
  }

    .portfolio-header.expanded {
        padding-bottom: 3rem; /* Adjusted for button visibility */
    }

    .header-content h2 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
        text-align: center;
    }

    nav ul {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }

    nav li {
        width: 100%;
        text-align: center;
    }

    nav a {
        display: block;
        padding: 0.5rem;
    }

    .theme-slider {
        margin-top: auto;
        margin-bottom: auto;
        margin-left: 0;
        justify-content: center;
    }

    #show-header-btn {
    display: none;
    background: #00ff88;
    color: #1a1a1a;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
    line-height: 48px;
    text-align: center;
    cursor: pointer;
    z-index: 1100;
    /* Smooth transition for opacity and transform */
    transition: opacity 0.6s cubic-bezier(0.4,0,0.2,1), transform 0.6s cubic-bezier(0.4,0,0.2,1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    transform-origin: center center;
    opacity: 100; /* Start hidden */
    transform: translateY(-30px) scale(0.8); /* Start slightly above and smaller */
}

#show-header-btn.bottom-position {
    display: flex;
    position: relative;
    z-index: 1101;
    margin: 1rem auto 0;
    opacity: 1; /* Fade in */
    transform: translateY(0) scale(1); /* Slide to place and scale up */
}
}

@media (max-width: 768px) {
    #hero h1 {
        font-size: 1.6rem;
    }

    #hero h1 {
        font-size: 2.5rem;
    }

    #hero p {
        font-size: 1rem;
    }

    #biodata {
        flex-direction: column;
        text-align: center;
        padding: 60px 15px;
    }

    .profile-pic {
        width: 180px;
        height: 180px;
    }

    .bio-info h2 {
        font-size: 2rem;
    }

    .bio-info p {
        font-size: 1rem;
    }

    .projects {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .project {
        padding: 1.25rem;
    }

    .project img {
        height: 150px;
    }

    .project h3 {
        font-size: 1.25rem;
    }

    .project p {
        font-size: 0.9rem;
    }

    #skills {
        padding: 60px 15px;
    }

    #skills h2 {
        font-size: 2rem;
    }

    .skills-container {
        padding: 1.5rem;
    }

    .skill-name {
        font-size: 1.1rem;
    }

    .progress::after {
        font-size: 0.9rem;
    }

    #languages {
        padding: 60px 15px;
    }

    #languages h2 {
        font-size: 2rem;
    }

    .languages-container {
        padding: 1.5rem;
    }

    .languages-name {
        font-size: 1.1rem;
    }

    #contact {
        padding: 60px 15px;
    }

    .contact-container {
        padding: 2rem;
        max-width: 100%;
    }

    #chatbox {
        width: 90vw;
        right: 5vw;
        bottom: 20px;
    }

    #social-links {
        padding: 30px 15px;
    }

    .social-container {
        padding: 1.5rem;
    }

    .social-container h2 {
        font-size: 1.8rem;
    }

    .social-links a {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    #hero h1 {
        font-size: 2rem;
    }

    .projects {
        gap: 1rem;
    }

    .project {
        padding: 1rem;
    }

    #skills h2 {
        font-size: 1.8rem;
    }

    .skills-container {
        padding: 1rem;
    }

    .skill-name {
        font-size: 1rem;
    }

    .progress::after {
        font-size: 0.8rem;
        top: -25px;
    }

    #languages h2 {
        font-size: 1.8rem;
    }

    .languages-container {
        padding: 1rem;
    }

    .languages-name {
        font-size: 1rem;
    }

    .contact-container input,
    .contact-container textarea {
        font-size: 0.9rem;
    }

    .contact-container button {
        font-size: 0.9rem;
    }

    .social-container h2 {
        font-size: 1.5rem;
    }

    .social-links a {
        font-size: 1.2rem;
    }
}

.typing-dots {
    display: inline-block;
    font-style: italic;
}
.typing-dots .dot {
    animation: blink 1s infinite;
    opacity: 0.5;
}
.typing-dots .dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dots .dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 1; }
}

body.light .theme-label,
body.light .theme-label1 {
    color: #111 !important;
}

body.light nav a,
body.light .header-title,
body.light .header-icon {
    color: #111 !important;
    filter: none !important;
}

body.light .portfolio-header {
    color: #111 !important;
}

body.light .bio-info h2,
body.light .bio-info p,
body.light .university {
    color: #111 !important;
}

body.light .project h3,
body.light .project p,
body.light .project a {
    color: #111 !important;
}

body.light #about {
    color: #111 !important;
}

body.light #about-para {
    color: #111 !important;
}

body.light #skills h2,
body.light .skill-name {
    color: #111 !important;
}

body.light #languages h2,
body.light .languages-name {
    color: #111 !important;
}

body.light #certificates h2,
body.light .certificate h3,
body.light .certificate p,
body.light .certificate a {
    color: #111 !important;
}

body.light #contact,
body.light .contact-container,
body.light .contact-container h2,
body.light .contact-container input,
body.light .contact-container textarea,
body.light .contact-container button {
    color: #111 !important;
}

body.light #social-links,
body.light .social-container,
body.light .social-container h2,
body.light .social-text-links a {
    color: #111 !important;
}


/* Black robot in light mode */
body.dark .robot-logo-container {
    filter: invert();
}

.robo-logo {
    height: 200px;
    /* border-radius: 50%; */
    transition: transform 0.3s, box-shadow 0.3s, filter 0.3s;
}

.robot-logo-container:hover .robo-logo {
    transform: scale(1.13);
    
}