/* ===== Design System ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    --primary:       #7c3aed;
    --primary-light: #a855f7;
    --accent:        #06b6d4;
    --accent-warm:   #f59e0b;
    --bg:            #050b18;
    --bg-card:       rgba(255,255,255,0.035);
    --bg-card-hover: rgba(255,255,255,0.07);
    --surface:       rgba(255,255,255,0.05);
    --border:        rgba(255,255,255,0.10);
    --border-glow:   rgba(124,58,237,0.45);
    --text:          #e2e8f0;
    --text-muted:    rgba(226,232,240,0.55);
    --white:         #ffffff;

    --grad-primary:  linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
    --grad-warm:     linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --grad-text:     linear-gradient(90deg, #a855f7, #38bdf8);

    --shadow-sm:  0 2px 12px rgba(0,0,0,0.3);
    --shadow-md:  0 8px 32px rgba(0,0,0,0.45);
    --shadow-lg:  0 24px 60px rgba(0,0,0,0.6);
    --glow:       0 0 32px rgba(124,58,237,0.35);
    --glow-cyan:  0 0 32px rgba(6,182,212,0.3);

    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

#webgl-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
    outline: none;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    overflow-x: hidden;
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
    background: linear-gradient(#7c3aed, #06b6d4);
    border-radius: 999px;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
    width: min(1160px, 92%);
    margin-inline: auto;
}

.section {
    padding: 96px 0;
}

/* Section title */
.section-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(1.9rem, 4vw, 2.7rem);
    line-height: 1.15;
    text-align: center;
    margin-bottom: 60px;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 64px;
    height: 3px;
    border-radius: 999px;
    background: var(--grad-primary);
    margin: 14px auto 0;
    box-shadow: var(--glow);
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
}

.navbar.scrolled {
    background: rgba(5, 11, 24, 0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom-color: var(--border);
}

.navbar .container {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.nav-brand h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.04em;
}

.nav-menu {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    font-size: 0.93rem;
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
    transition: color var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--white);
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0; bottom: -6px;
    width: 100%; height: 2px;
    border-radius: 999px;
    background: var(--grad-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
    box-shadow: var(--glow);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 24px; height: 2px;
    border-radius: 999px;
    background: var(--text);
    transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
    min-height: 100svh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: transparent;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding-top: 96px;
    padding-bottom: 60px;
}

.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.2rem, 6vw, 4.2rem);
    line-height: 1.1;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
    color: var(--white);
}

.highlight {
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.wave {
    display: inline-block;
    animation: wave 2.5s infinite;
    -webkit-text-fill-color: unset;
    background: none;
}

@keyframes wave {
    0%, 100% { transform: rotate(0deg); }
    30%       { transform: rotate(18deg); }
    70%       { transform: rotate(-12deg); }
}

.hero-subtitle {
    min-height: 48px;
    font-size: clamp(1.1rem, 3vw, 1.75rem);
    font-weight: 500;
    margin-bottom: 16px;
    color: rgba(255,255,255,0.88);
}

.cursor {
    display: inline-block;
    width: 2px;
    background: var(--primary-light);
    animation: blink 0.85s infinite;
    box-shadow: 0 0 8px var(--primary-light);
}

@keyframes blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

.hero-description {
    max-width: 680px;
    margin: 0 auto 36px;
    color: var(--text-muted);
    font-size: 1.05rem;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

/* Buttons */
.btn {
    border: none;
    border-radius: 999px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 13px 28px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.15);
    opacity: 0;
    transition: opacity var(--transition);
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    background: var(--grad-primary);
    color: var(--white);
    box-shadow: var(--glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 48px rgba(124,58,237,0.5);
}

.btn-secondary {
    background: var(--surface);
    color: var(--white);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    border-color: var(--primary-light);
    background: rgba(124,58,237,0.15);
    transform: translateY(-3px);
}

/* Social links (hero) */
.social-links {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.social-links a {
    width: 46px; height: 46px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    transition: var(--transition);
    backdrop-filter: blur(8px);
}

.social-links a:hover {
    border-color: var(--primary-light);
    color: var(--white);
    background: rgba(124,58,237,0.25);
    box-shadow: var(--glow);
    transform: translateY(-3px);
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    left: 50%;
    bottom: 26px;
    transform: translateX(-50%);
    z-index: 2;
}

.mouse {
    width: 26px; height: 44px;
    border: 2px solid rgba(255,255,255,0.4);
    border-radius: 999px;
    display: grid;
    place-items: start center;
    padding-top: 8px;
}

.wheel {
    width: 4px; height: 9px;
    border-radius: 999px;
    background: var(--primary-light);
    box-shadow: 0 0 8px var(--primary-light);
    animation: scrollWheel 1.6s infinite;
}

@keyframes scrollWheel {
    0%   { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(14px); }
}

/* ===== Section backgrounds ===== */
.about,
.experience,
.projects {
    background: transparent;
    position: relative;
}

.about::before,
.experience::before,
.projects::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 40% at 80% 50%, rgba(124,58,237,0.03) 0%, transparent 70%);
    pointer-events: none;
}

/* ===== Shared Glass Card ===== */
.skill-category,
.education-card,
.project-card,
.timeline-content,
.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

.skill-category:hover,
.education-card:hover,
.project-card:hover,
.timeline-content:hover {
    transform: translateY(-6px);
    background: var(--bg-card-hover);
    border-color: rgba(124,58,237,0.4);
    box-shadow: var(--shadow-md), var(--glow);
}

/* ===== About ===== */
.about-content {
    display: grid;
    grid-template-columns: minmax(260px, 340px) 1fr;
    gap: 48px;
    align-items: center;
}

.image-wrapper {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 2px solid var(--border);
    box-shadow: var(--shadow-md), var(--glow);
    position: relative;
}

.image-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(124,58,237,0.1), transparent 60%);
    pointer-events: none;
}

.about-text h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 16px;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 14px;
    line-height: 1.8;
}

.about-info {
    margin: 28px 0;
    display: grid;
    gap: 12px;
}

.info-item {
    display: flex;
    gap: 12px;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.info-item i {
    color: var(--primary-light);
    filter: drop-shadow(0 0 6px var(--primary));
}

/* ===== Skills ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.skill-category {
    padding: 30px 24px;
    text-align: center;
}

.category-icon {
    width: 62px; height: 62px;
    margin: 0 auto 16px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(124,58,237,0.25), rgba(6,182,212,0.15));
    border: 1px solid rgba(124,58,237,0.35);
    display: grid;
    place-items: center;
    font-size: 1.5rem;
    color: var(--primary-light);
    box-shadow: var(--glow);
    transition: var(--transition);
}

.skill-category:hover .category-icon {
    background: linear-gradient(135deg, rgba(124,58,237,0.4), rgba(6,182,212,0.25));
    box-shadow: 0 0 24px rgba(124,58,237,0.5);
}

.skill-category h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.05rem;
    margin-bottom: 14px;
    color: var(--white);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.skill-tag {
    font-size: 0.78rem;
    font-weight: 500;
    border-radius: 999px;
    padding: 5px 13px;
    background: rgba(124,58,237,0.15);
    border: 1px solid rgba(124,58,237,0.35);
    color: var(--primary-light);
    transition: var(--transition);
}

.skill-category:hover .skill-tag {
    background: rgba(124,58,237,0.25);
    border-color: var(--primary-light);
    box-shadow: 0 0 8px rgba(124,58,237,0.3);
}

/* ===== Experience / Timeline ===== */
.timeline {
    position: relative;
    display: grid;
    gap: 28px;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0; bottom: 0; left: 18px;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    box-shadow: var(--glow);
}

.timeline-item {
    position: relative;
    padding-left: 52px;
}

.timeline-dot {
    width: 14px; height: 14px;
    border-radius: 50%;
    background: var(--grad-primary);
    position: absolute;
    left: 12px; top: 20px;
    box-shadow: var(--glow);
    border: 2px solid var(--bg);
}

.timeline-content {
    padding: 26px;
}

.timeline-date {
    display: inline-block;
    margin-bottom: 12px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary-light);
    background: rgba(124,58,237,0.15);
    border: 1px solid rgba(124,58,237,0.35);
    padding: 4px 12px;
    border-radius: 999px;
    letter-spacing: 0.03em;
}

.timeline-content h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.2rem;
    color: var(--white);
}

.timeline-content h4 {
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: 500;
}

.timeline-content p,
.timeline-content li {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.75;
}

.timeline-content ul {
    margin-top: 12px;
    padding-left: 18px;
    display: grid;
    gap: 8px;
}

/* ===== Education ===== */
.education-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.education-card {
    padding: 30px 26px;
}

.education-icon {
    width: 60px; height: 60px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(6,182,212,0.2), rgba(124,58,237,0.15));
    border: 1px solid rgba(6,182,212,0.35);
    color: var(--accent);
    display: grid;
    place-items: center;
    font-size: 1.4rem;
    margin-bottom: 16px;
    box-shadow: var(--glow-cyan);
    transition: var(--transition);
}

.education-card:hover .education-icon {
    background: linear-gradient(135deg, rgba(6,182,212,0.35), rgba(124,58,237,0.25));
    box-shadow: 0 0 24px rgba(6,182,212,0.45);
}

.education-card h3 {
    font-family: 'Space Grotesk', sans-serif;
    margin-bottom: 6px;
    color: var(--white);
}

.education-card h4 {
    color: var(--text-muted);
    margin-bottom: 10px;
    font-weight: 500;
    font-size: 0.92rem;
}

.education-date {
    display: inline-block;
    font-size: 0.77rem;
    font-weight: 600;
    color: var(--accent);
    background: rgba(6,182,212,0.12);
    border: 1px solid rgba(6,182,212,0.3);
    border-radius: 999px;
    padding: 4px 12px;
    margin-bottom: 14px;
}

.education-card p,
.certification-list li {
    color: var(--text-muted);
    font-size: 0.93rem;
    line-height: 1.7;
}

.certification-list {
    margin-top: 10px;
    padding-left: 18px;
    display: grid;
    gap: 7px;
}

/* ===== Projects ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.project-card {
    overflow: hidden;
    border-radius: var(--radius-md);
}

.project-image {
    height: 220px;
    position: relative;
    overflow: hidden;
}

.project-image img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.4,0,0.2,1);
}

.project-card:hover .project-image img {
    transform: scale(1.08);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(124,58,237,0.7), rgba(6,182,212,0.5));
    display: grid;
    place-items: center;
    opacity: 0;
    transition: opacity var(--transition);
    backdrop-filter: blur(4px);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    width: 50px; height: 50px;
    border-radius: 50%;
    background: rgba(255,255,255,0.95);
    color: var(--primary);
    display: grid;
    place-items: center;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.project-link:hover {
    transform: scale(1.12);
}

.project-content {
    padding: 24px;
}

.project-content h3 {
    font-family: 'Space Grotesk', sans-serif;
    margin-bottom: 10px;
    color: var(--white);
}

.project-content p {
    color: var(--text-muted);
    margin-bottom: 16px;
    font-size: 0.93rem;
    line-height: 1.75;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.project-tags span {
    font-size: 0.73rem;
    font-weight: 500;
    padding: 4px 11px;
    border-radius: 999px;
    background: rgba(6,182,212,0.12);
    border: 1px solid rgba(6,182,212,0.3);
    color: var(--accent);
    transition: var(--transition);
}

.project-card:hover .project-tags span {
    background: rgba(6,182,212,0.22);
    border-color: var(--accent);
}

/* ===== Contact ===== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 32px;
}

.contact-info h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 12px;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-info > p {
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.8;
}

.contact-details {
    display: grid;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.contact-item i {
    width: 44px; height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: rgba(124,58,237,0.15);
    border: 1px solid rgba(124,58,237,0.35);
    color: var(--primary-light);
    font-size: 1rem;
    flex-shrink: 0;
    box-shadow: var(--glow);
    transition: var(--transition);
}

.contact-item:hover i {
    background: rgba(124,58,237,0.3);
}

.contact-item h4 {
    margin-bottom: 2px;
    color: var(--white);
    font-size: 0.9rem;
}

.contact-item a,
.contact-item p {
    color: var(--text-muted);
    font-size: 0.92rem;
    transition: color var(--transition);
}

.contact-item a:hover { color: var(--primary-light); }

.contact-social {
    display: flex;
    gap: 10px;
}

.contact-social a {
    width: 44px; height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
    transition: var(--transition);
}

.contact-social a:hover {
    background: rgba(124,58,237,0.25);
    border-color: var(--primary-light);
    color: var(--white);
    box-shadow: var(--glow);
    transform: translateY(-3px);
}

.contact-form {
    padding: 28px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255,255,255,0.04);
    font-family: inherit;
    color: var(--text);
    font-size: 0.95rem;
    padding: 13px 16px;
    outline: none;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-light);
    background: rgba(124,58,237,0.08);
    box-shadow: 0 0 0 3px rgba(124,58,237,0.2);
}

.contact-form .btn { width: 100%; }

/* ===== Footer ===== */
.footer {
    background: #030810;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 32px;
}

.footer h3,
.footer h4 {
    font-family: 'Space Grotesk', sans-serif;
    color: var(--white);
    margin-bottom: 14px;
}

.footer-brand p {
    font-size: 0.92rem;
    line-height: 1.7;
}

.footer-links ul {
    list-style: none;
    display: grid;
    gap: 10px;
}

.footer-links a {
    font-size: 0.92rem;
    transition: color var(--transition);
}

.footer-links a:hover { color: var(--primary-light); }

.social-icons {
    display: flex;
    gap: 10px;
}

.social-icons a {
    width: 36px; height: 36px;
    border-radius: 9px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    color: var(--text-muted);
    display: grid;
    place-items: center;
    transition: var(--transition);
}

.social-icons a:hover {
    background: rgba(124,58,237,0.2);
    border-color: var(--primary-light);
    color: var(--white);
    box-shadow: var(--glow);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.07);
    padding-top: 18px;
    text-align: center;
    font-size: 0.88rem;
}

/* ===== Chatbot ===== */
.chatbot-toggle {
    position: fixed;
    right: 24px; bottom: 24px;
    width: 62px; height: 62px;
    border: 0;
    border-radius: 50%;
    background: var(--grad-primary);
    color: var(--white);
    box-shadow: var(--glow), var(--shadow-lg);
    display: grid;
    place-items: center;
    z-index: 1200;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
}

.chatbot-toggle:hover {
    transform: scale(1.07);
    box-shadow: 0 0 48px rgba(124,58,237,0.55), var(--shadow-lg);
}

.chatbot-toggle-icon {
    position: relative;
    width: 24px; height: 24px;
}

.chatbot-toggle-icon i {
    position: absolute;
    inset: 0;
    margin: auto;
    transition: var(--transition);
}

#closeIcon {
    opacity: 0;
    transform: scale(0.6);
}

.chatbot-toggle.active #chatIcon {
    opacity: 0;
    transform: scale(0.6);
}

.chatbot-toggle.active #closeIcon {
    opacity: 1;
    transform: scale(1);
}

.chatbot-badge {
    position: absolute;
    top: -4px; right: -4px;
    min-width: 22px; height: 22px;
    border-radius: 999px;
    background: #ef4444;
    color: var(--white);
    font-size: 0.72rem;
    display: grid;
    place-items: center;
    padding: 0 6px;
    border: 2px solid var(--bg);
}

.chatbot-toggle-pulse {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: rgba(124,58,237,0.3);
    animation: pulse 2.2s infinite;
    z-index: -1;
}

@keyframes pulse {
    0%   { transform: scale(1); opacity: 0.5; }
    100% { transform: scale(1.55); opacity: 0; }
}

.chatbot-container {
    position: fixed;
    right: 24px; bottom: 100px;
    width: min(390px, calc(100vw - 24px));
    height: 590px;
    background: #0b1225;
    border-radius: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg), var(--glow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    z-index: 1199;
    opacity: 0;
    pointer-events: none;
    transform: translateY(18px) scale(0.97);
    transition: var(--transition);
}

.chatbot-container.active {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}

.chatbot-header {
    padding: 14px 16px;
    background: var(--grad-primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chatbot-header-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.chatbot-avatar {
    width: 40px; height: 40px;
    border-radius: 10px;
    background: rgba(255,255,255,0.2);
    display: grid;
    place-items: center;
    position: relative;
    font-size: 1.2rem;
}

.avatar-pulse {
    position: absolute;
    inset: 0;
    border-radius: 10px;
    background: rgba(255,255,255,0.2);
    animation: pulse 2s infinite;
}

.chatbot-header-text h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.95rem;
}

.chatbot-status {
    font-size: 0.74rem;
    display: flex;
    align-items: center;
    gap: 5px;
    opacity: 0.9;
}

.status-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 6px #22c55e;
}

.chatbot-header-actions {
    display: flex;
    gap: 6px;
}

.chatbot-minimize,
.chatbot-close {
    width: 30px; height: 30px;
    border: 0;
    border-radius: 8px;
    color: var(--white);
    background: rgba(255,255,255,0.18);
    cursor: pointer;
    transition: var(--transition);
}

.chatbot-minimize:hover,
.chatbot-close:hover {
    background: rgba(255,255,255,0.3);
}

.chatbot-messages {
    flex: 1;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow-y: auto;
    background: #08101f;
}

.chatbot-messages::-webkit-scrollbar { width: 4px; }
.chatbot-messages::-webkit-scrollbar-track { background: transparent; }
.chatbot-messages::-webkit-scrollbar-thumb {
    background: rgba(124,58,237,0.4);
    border-radius: 999px;
}

.chat-date-divider {
    display: flex;
    justify-content: center;
}

.chat-date-divider span {
    font-size: 0.72rem;
    color: var(--text-muted);
    background: rgba(255,255,255,0.06);
    border-radius: 999px;
    padding: 4px 10px;
}

.chatbot-message {
    display: flex;
    gap: 8px;
    align-items: flex-start;
}

.user-message { flex-direction: row-reverse; }

.message-avatar {
    width: 34px; height: 34px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: rgba(124,58,237,0.2);
    border: 1px solid rgba(124,58,237,0.3);
    flex-shrink: 0;
}

.user-avatar {
    background: rgba(6,182,212,0.2);
    border-color: rgba(6,182,212,0.3);
}

.message-bubble-wrapper { max-width: 78%; }

.message-content {
    border-radius: 14px;
    background: rgba(255,255,255,0.055);
    border: 1px solid var(--border);
    padding: 10px 14px;
}

.user-message .message-content {
    background: linear-gradient(135deg, rgba(124,58,237,0.6), rgba(168,85,247,0.5));
    border-color: rgba(124,58,237,0.5);
}

.message-content p {
    font-size: 0.88rem;
    color: var(--text);
    line-height: 1.6;
}

.user-message .message-content p { color: var(--white); }

.message-time {
    font-size: 0.67rem;
    color: var(--text-muted);
    margin-top: 5px;
    display: inline-flex;
    gap: 4px;
}

.quick-replies {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
}

.quick-reply,
.suggestion-chip {
    border: 1px solid rgba(124,58,237,0.4);
    border-radius: 999px;
    background: rgba(124,58,237,0.12);
    color: var(--primary-light);
    font-family: 'Inter', sans-serif;
    font-size: 0.74rem;
    padding: 6px 11px;
    cursor: pointer;
    transition: var(--transition);
}

.quick-reply:hover,
.suggestion-chip:hover {
    background: rgba(124,58,237,0.25);
    border-color: var(--primary-light);
    box-shadow: 0 0 8px rgba(124,58,237,0.3);
}

.chatbot-suggestions {
    padding: 8px 14px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 6px;
    overflow-x: auto;
    background: #0b1225;
}

.chatbot-suggestions::-webkit-scrollbar { display: none; }

.chatbot-input {
    border-top: 1px solid var(--border);
    background: #0b1225;
    padding: 10px 12px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 8px;
}

.emoji-toggle,
.chatbot-input #chatbotSend {
    width: 40px; height: 40px;
    border: 0;
    border-radius: 10px;
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.emoji-toggle {
    background: rgba(255,255,255,0.06);
    color: var(--text-muted);
}

.emoji-toggle:hover { background: rgba(255,255,255,0.1); }

.chatbot-input input {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: rgba(255,255,255,0.05);
    color: var(--text);
    font-family: inherit;
    font-size: 0.9rem;
    padding: 10px 14px;
    outline: none;
    transition: var(--transition);
}

.chatbot-input input::placeholder { color: var(--text-muted); }

.chatbot-input input:focus {
    border-color: var(--primary-light);
    background: rgba(124,58,237,0.08);
    box-shadow: 0 0 0 2px rgba(124,58,237,0.2);
}

.chatbot-input #chatbotSend {
    background: var(--grad-primary);
    color: var(--white);
    box-shadow: var(--glow);
}

.chatbot-input #chatbotSend:hover { transform: scale(1.05); }

.chatbot-input #chatbotSend:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.chatbot-footer {
    text-align: center;
    font-size: 0.72rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    background: #0b1225;
    padding: 8px;
}

.chatbot-footer a {
    color: var(--primary-light);
    transition: color var(--transition);
}

.typing-indicator {
    padding: 10px 14px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.055);
    display: inline-flex;
    gap: 5px;
    align-items: center;
}

.typing-indicator span {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--primary-light);
    animation: bounce 1s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.15s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.3s; }

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-5px); }
}

/* ===== Reveal Animations ===== */
.about-content:not(.fade-in),
.skill-category:not(.fade-in),
.timeline-item:not(.fade-in),
.education-card:not(.fade-in),
.project-card:not(.fade-in),
.contact-content:not(.fade-in) {
    opacity: 0;
    transform: translateY(22px);
}

.fade-in {
    animation: fadeIn 0.7s cubic-bezier(0.4,0,0.2,1) both;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(22px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .skills-grid,
    .education-grid,
    .projects-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 840px) {
    .nav-toggle { display: flex; }

    .nav-menu {
        position: fixed;
        inset: 76px 0 auto 0;
        background: rgba(5,11,24,0.96);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        display: grid;
        gap: 0;
        transform: translateY(-120%);
        transition: var(--transition);
    }

    .nav-menu li { border-top: 1px solid rgba(255,255,255,0.05); }

    .nav-menu .nav-link {
        display: block;
        padding: 15px 5%;
    }

    .nav-menu.active { transform: translateY(0); }

    .nav-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .nav-toggle.active span:nth-child(2) { opacity: 0; }
    .nav-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .about-content,
    .contact-content,
    .footer-content {
        grid-template-columns: 1fr;
    }

    .about-image {
        max-width: 320px;
        margin: 0 auto;
    }

    .section { padding: 80px 0; }
}

@media (max-width: 640px) {
    .hero-content {
        padding-top: 92px;
        padding-bottom: 48px;
    }

    .hero-description { font-size: 0.96rem; }

    .btn {
        width: 100%;
        max-width: 270px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .skills-grid,
    .education-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .timeline-item { padding-left: 40px; }
    .timeline::before { left: 12px; }
    .timeline-dot { left: 6px; }

    .chatbot-container {
        right: 0; bottom: 0;
        width: 100vw;
        height: calc(100svh - env(safe-area-inset-top, 0px));
        border-radius: 0;
        padding-bottom: env(safe-area-inset-bottom, 0px);
    }

    .chatbot-input input { font-size: 16px; }

    .chatbot-toggle.active {
        opacity: 0;
        pointer-events: none;
    }

    .chatbot-toggle {
        right: 16px; bottom: 16px;
        width: 56px; height: 56px;
        transition: opacity var(--transition);
    }
}