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

:root {
    --bg-color: #0F101C;
    --card-bg-enhanced: rgba(28, 34, 58, 0.7);
    --card-bg-project: #161A2B;
    --glass-border: rgba(167, 95, 255, 0.1);
    --glass-border-enhanced: rgba(167, 95, 255, 0.25);
    --project-border: rgba(167, 95, 255, 0.15);
    --text-color: #E4E4E7;
    --text-secondary: #A0A0B0;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --accent-blue: #4D6CFF;
    --accent-purple: #A75FFF;
    --accent-pink: #F560FF;
    --accent-orange: #FF9B63;
    --gradient: linear-gradient(90deg, var(--accent-blue), var(--accent-purple), var(--accent-pink), var(--accent-orange));
    --font-family: 'Roboto', sans-serif;
    --transition-speed: 0.35s;
    --animation-delay: 0.1s;
    --border-radius-lg: 20px;
    --border-radius-md: 14px;
    --border-radius-sm: 10px;
    --container-width: 1100px;
    --section-padding: 6.5rem 2rem;
    --nav-height: 70px;
}

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + 30px); scrollbar-width: thin; scrollbar-color: var(--accent-purple) var(--bg-color); }
html::-webkit-scrollbar { width: 8px; }
html::-webkit-scrollbar-track { background: var(--bg-color); }
html::-webkit-scrollbar-thumb { background-color: var(--accent-purple); border-radius: 10px; }

body { font-family: var(--font-family); color: var(--text-color); line-height: 1.65; font-size: 15px; font-weight: 400; min-height: 100vh; overflow-x: hidden; background: var(--bg-color); position: relative; background-attachment: fixed; }

.background-bubbles { position: fixed; top: 0; left: 0; width: 100%; height: 100%; overflow: hidden; z-index: -2; pointer-events: none; }
.bubble { position: absolute; border-radius: 50%; opacity: 0.15; animation: float 20s infinite ease-in-out; }
.bubble.b1 { width: 80px; height: 80px; background: var(--accent-blue); left: 10%; bottom: -100px; animation-duration: 25s; animation-delay: -5s; }
.bubble.b2 { width: 120px; height: 120px; background: var(--accent-purple); left: 30%; bottom: -150px; animation-duration: 30s; animation-delay: -10s; }
.bubble.b3 { width: 50px; height: 50px; background: var(--accent-pink); left: 55%; bottom: -80px; animation-duration: 18s; animation-delay: -2s; }
.bubble.b4 { width: 150px; height: 150px; background: var(--accent-blue); left: 80%; bottom: -200px; animation-duration: 35s; animation-delay: -15s; opacity: 0.1; }
.bubble.b5 { width: 70px; height: 70px; background: var(--accent-orange); left: 90%; bottom: -100px; animation-duration: 22s; animation-delay: -8s; }
.bubble.b6 { width: 100px; height: 100px; background: var(--accent-pink); left: 5%; bottom: -120px; animation-duration: 28s; animation-delay: -12s; }
.bubble.b7 { width: 60px; height: 60px; background: var(--accent-purple); left: 70%; bottom: -90px; animation-duration: 20s; animation-delay: -3s; }
@keyframes float { 0% { transform: translateY(0) translateX(0) rotate(0deg); opacity: 0.15; } 50% { transform: translateY(-120vh) translateX(15vw) rotate(180deg); opacity: 0.05; } 100% { transform: translateY(0) translateX(0) rotate(360deg); opacity: 0.15; } }

.container { max-width: var(--container-width); margin: 0 auto; padding: 0 2rem; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; margin-bottom: 1rem; color: var(--text-color); line-height: 1.3; }
h2.section-title { font-size: clamp(2rem, 4.5vw, 3rem); margin-bottom: 4rem; position: relative; text-align: center; }
h2.section-title::after { content: ''; position: absolute; bottom: -15px; left: 50%; transform: translateX(-50%); width: 70px; height: 4px; background: var(--gradient); border-radius: 2px; opacity: 0.9; }
h3 { font-size: 1.25rem; font-weight: 700; }
h4 { font-size: 1.1rem; font-weight: 500; color: var(--text-color); margin-bottom: 0.2rem; transition: color var(--transition-speed) ease; } 
p { margin-bottom: 1.1rem; color: var(--text-secondary); }
.education-details p { transition: color var(--transition-speed) ease; } 
a { color: var(--accent-purple); text-decoration: none; transition: color var(--transition-speed) ease; }
a:hover { color: var(--accent-pink); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--border-radius-md); }

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

.glass-enhanced { background: var(--card-bg-enhanced); backdrop-filter: blur(24px) saturate(120%); -webkit-backdrop-filter: blur(24px) saturate(120%); border: 1px solid var(--glass-border-enhanced); box-shadow: 0 12px 45px var(--shadow-color); border-radius: var(--border-radius-lg); transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease, background var(--transition-speed) ease; position: relative; z-index: 1; }
.glass-enhanced:hover { transform: translateY(-8px); box-shadow: 0 18px 55px rgba(0,0,0,0.45); border-color: rgba(167, 95, 255, 0.35); background: rgba(35, 42, 70, 0.75); }

.border-highlight-on-hover { position: relative; z-index: 1; overflow: hidden; }
.border-highlight-on-hover::before,
.border-highlight-on-hover::after { content: ""; position: absolute; inset: -2.5px; z-index: -1; background: conic-gradient( from var(--angle, 0deg), var(--accent-blue), var(--accent-purple), var(--accent-pink), var(--accent-orange), var(--accent-pink), var(--accent-purple), var(--accent-blue) ); border-radius: inherit; opacity: 0; transition: opacity 0.4s ease-out; animation: border-rotation 4s linear infinite paused; }
.border-highlight-on-hover::after { filter: blur(8px); z-index: -2; }
.border-highlight-on-hover:hover::before,
.border-highlight-on-hover:hover::after { opacity: 0.8; animation-play-state: running; }
.education-highlight > div { position: relative; z-index: 2; } 


.education-highlight:hover .education-details h4,
.education-highlight:hover .education-details p {
    color: #1a1c2c; 
}


@property --angle { syntax: '<angle>'; initial-value: 0deg; inherits: false; }
@keyframes border-rotation { 0% { --angle: 0deg; } 100% { --angle: 360deg; } }


#main-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; height: var(--nav-height); transition: top 0.4s ease-in-out, background-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease; background-color: transparent; }
#main-header.scrolled { background-color: rgba(15, 16, 28, 0.88); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: 0 5px 20px rgba(0,0,0,0.35); }
#main-header.nav-hidden { top: calc(-1 * var(--nav-height) - 10px); }
.header-container { display: flex; justify-content: space-between; align-items: center; height: 100%; }
#main-header nav { display: flex; gap: 2.5rem; flex-grow: 1; justify-content: center; }
.nav-link { color: var(--text-secondary); font-weight: 500; font-size: 0.95rem; padding: 5px 0; position: relative; transition: color var(--transition-speed) ease; white-space: nowrap; }
.nav-link::after { content: ''; position: absolute; bottom: -7px; left: 0; width: 100%; height: 2.5px; background: var(--gradient); border-radius: 3px; transform: scaleX(0); transform-origin: left; transition: transform var(--transition-speed) cubic-bezier(0.645, 0.045, 0.355, 1); }
.nav-link:hover, .nav-link.active { color: var(--text-color); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.resume-button { display: inline-flex; align-items: center; gap: 0.5rem; padding: 9px 22px; background: transparent; border: 1.5px solid var(--accent-purple); color: var(--accent-purple); border-radius: 50px; font-weight: 700; font-size: 0.9rem; transition: all var(--transition-speed) ease; white-space: nowrap; margin-left: 2rem; }
.resume-button i { font-size: 1em; }
.resume-button:hover { background: var(--accent-purple); color: var(--bg-color); transform: scale(1.03); border-color: var(--accent-purple); }
#mobile-menu-toggle { display: none; background: none; border: none; color: var(--text-color); font-size: 1.5rem; cursor: pointer; z-index: 1100; padding: 10px; }
.nav-links-mobile { display: none; }

.hero-section { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding-top: var(--nav-height); position: relative; overflow: hidden; }
.hero-content { flex-grow: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; width: 100%; }
.hero-content h1 { font-size: clamp(3.2rem, 7.5vw, 6rem); font-weight: 900; margin-bottom: 1.1rem; line-height: 1.1; }
.hero-subtitle { font-size: clamp(1.05rem, 2.3vw, 1.4rem); color: var(--text-secondary); max-width: 750px; margin: 0 auto 3rem auto; font-weight: 400;}
.cta-button { display: inline-block; padding: 16px 45px; background: var(--gradient); color: #fff; border: none; border-radius: 50px; font-weight: 700; font-size: 1.1rem; letter-spacing: 0.5px; transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease; box-shadow: 0 8px 25px rgba(167, 95, 255, 0.3); }
.cta-button:hover { transform: translateY(-5px) scale(1.03); box-shadow: 0 12px 35px rgba(167, 95, 255, 0.4); color: #fff; }
.scroll-down-arrow { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); color: var(--text-secondary); font-size: 1.5rem; opacity: 0.7; transition: opacity var(--transition-speed) ease; animation: bounce 2s infinite ease-in-out; }
.scroll-down-arrow:hover { opacity: 1; color: var(--text-color); }
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); } 40% { transform: translateX(-50%) translateY(-15px); } 60% { transform: translateX(-50%) translateY(-8px); } }

.content-section { padding: var(--section-padding); overflow: hidden; }

.about-layout-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2.5rem; align-items: start; }
.about-main-content { display: flex; flex-direction: column; gap: 2rem; }
.about-bio-brief { padding: 1.5rem; border: 1px solid var(--glass-border); border-radius: var(--border-radius-lg); background: rgba(22, 26, 43, 0.3); }
.about-bio-brief p { font-size: 1rem; color: var(--text-secondary); margin-bottom: 0; line-height: 1.7; }
.education-highlight { display: flex; align-items: center; gap: 1.5rem; padding: 1.8rem; }
.education-icon { flex-shrink: 0; font-size: 2.8rem; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.education-details p { margin-bottom: 0.2rem; font-size: 1rem; color: var(--text-secondary); }
.education-details .education-uni { font-weight: 500; font-style: italic; font-size: 0.95rem; color: var(--accent-purple); }
.about-passions h3 { font-size: 1.5rem; margin-bottom: 1.5rem; color: var(--text-color); text-align: center; }
.passions-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 1.2rem; }
.passion-item { padding: 1.3rem 1rem; text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.passion-item i { font-size: 2.3rem; margin-bottom: 0.9rem; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; transition: transform var(--transition-speed) ease; }
.passion-item span { font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); }
.passion-item:hover i { transform: scale(1.15) rotate(-5deg); }

.timeline { position: relative; max-width: 900px; margin: 4rem auto 0 auto; }
.timeline::before { content: ''; position: absolute; top: 0; bottom: 0; left: 50%; width: 3px; background: rgba(167, 95, 255, 0.1); border-radius: 2px; transform: translateX(-50%); z-index: 0; }
.timeline-item { padding: 15px 40px; position: relative; width: 50%; margin-bottom: 40px; opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease-out, transform 0.7s ease-out; }
.timeline-item.visible { opacity: 1; transform: translateY(0); }
.timeline-item.left { left: 0; padding-right: 65px;}
.timeline-item.right { left: 50%; padding-left: 65px;}
.timeline-item::after { content: ''; position: absolute; width: 20px; height: 20px; background: var(--gradient); border: 4px solid var(--bg-color); top: 30px; border-radius: 50%; z-index: 1; box-shadow: 0 0 12px rgba(167, 95, 255, 0.4); }
.timeline-item.left::after { right: -10px; transform: translateY(-50%); }
.timeline-item.right::after { left: -10px; transform: translateY(-50%); }
.timeline-content { padding: 1.8rem 2rem; position: relative; }
.timeline-date { font-weight: 700; color: var(--accent-purple); font-size: 0.85rem; margin-bottom: 0.5rem; display: block; }
.timeline-content h3 { font-size: 1.35rem; margin-bottom: 0.3rem; color: var(--text-color); }
.timeline-company { font-weight: 500; color: var(--text-secondary); margin-bottom: 0.9rem; font-size: 1rem;}
.timeline-desc { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 0;}

.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.skill-card { padding: 2.2rem 1.8rem; text-align: center; }
.skill-icon { font-size: 3rem; margin-bottom: 1.5rem; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; display: inline-block; }
.skill-name { font-size: 1.25rem; margin-bottom: 0.7rem; font-weight: 700; color: var(--text-color); }
.skill-desc { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 0; line-height: 1.6; }

.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2.2rem; }
.project-card { background-color: var(--card-bg-project); border: 1px solid var(--project-border); box-shadow: 0 8px 25px rgba(0,0,0,0.25); border-radius: var(--border-radius-md); overflow: hidden; display: flex; flex-direction: column; position: relative; transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease; z-index: 1; }
.project-card:hover { transform: translateY(-6px); box-shadow: 0 14px 40px rgba(0,0,0,0.35); }
.project-card-border-hover::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1.5px; background: var(--gradient); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); mask-composite: exclude; opacity: 0; transition: opacity var(--transition-speed) ease; pointer-events: none; animation: border-rotation 4s linear infinite paused; }
.project-card-border-hover:hover::before { opacity: 1; animation-play-state: running; }
.project-image { width: 100%; height: 200px; object-fit: cover; border-bottom: 1px solid var(--project-border); }
.project-content { padding: 1.5rem; flex-grow: 1; display: flex; flex-direction: column; }
.project-title { font-size: 1.3rem; margin-bottom: 0.5rem; color: var(--text-color); }
.project-desc { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 1.5rem; flex-grow: 1; line-height: 1.6; }
.project-tags { margin-bottom: 1.5rem; display: flex; flex-wrap: wrap; gap: 0.6rem; }
.project-tags span { background-color: rgba(167, 95, 255, 0.15); color: var(--accent-purple); padding: 5px 13px; border-radius: 50px; font-size: 0.8rem; font-weight: 700; }
.project-links { display: flex; gap: 1rem; margin-top: auto; }
.project-links a { display: inline-flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; padding: 8px 16px; border-radius: 50px; border: 1.5px solid var(--accent-purple); color: var(--accent-purple); font-weight: 700; transition: all var(--transition-speed) ease; }
.project-links a:hover { background-color: var(--accent-purple); color: var(--bg-color); }
.project-links i { font-size: 0.9em; }

.connect-container { max-width: 800px; margin: 0 auto; text-align: center; }
.connect-subtitle { font-size: 1.15rem; color: var(--text-secondary); margin-bottom: 3rem; max-width: 650px; margin-left: auto; margin-right: auto; line-height: 1.7;}
.connect-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.5rem; }
.connect-button { display: inline-flex; align-items: center; gap: 0.8rem; font-size: 1.05rem; padding: 15px 32px; font-weight: 700; color: var(--text-color); transition: all var(--transition-speed) ease, color var(--transition-speed) ease; border-color: transparent; }
.connect-button i { font-size: 1.4rem; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; transition: transform var(--transition-speed) ease; }
.connect-button:hover { color: var(--text-color); transform: translateY(-6px) scale(1.03); box-shadow: 0 14px 40px rgba(0,0,0,0.4); border-color: var(--glass-border-enhanced); }
.connect-button:hover i { transform: scale(1.1); }

#main-footer { padding: 2.5rem 0; text-align: center; margin-top: 5rem; border-top: 1px solid var(--glass-border); background-color: var(--bg-color); color: var(--text-secondary); font-size: 0.95rem; }
#main-footer p i { display: inline-block; margin: 0 4px; font-size: 0.9em;}

.animate-fade-in, .animate-fade-in-up, .animate-pop-in { opacity: 0; }
.animate-fade-in { animation: fadeIn 0.9s ease-out forwards; }
.animate-fade-in-up { animation: fadeInUp 0.9s 0.1s ease-out forwards; }
.animate-pop-in { animation: popIn 0.7s 0.2s ease-out forwards; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes popIn { from { opacity: 0; transform: scale(0.85); } to { opacity: 1; transform: scale(1); } }

.observe-me, .observe-me-child { opacity: 0; transform: translateY(35px); transition: opacity 0.8s cubic-bezier(0.165, 0.84, 0.44, 1), transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1); }
.observe-me.visible, .observe-me-child.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1024px) {
    :root { --container-width: 960px; }
    #main-header nav { gap: 1.8rem; }
    .about-layout-grid { grid-template-columns: 1fr; gap: 3rem;}
    .about-passions { margin-top: 0; }
    .about-passions h3 { text-align: center; }
}

@media (max-width: 768px) {
    :root { --nav-height: 65px; }
    body { font-size: 14.5px; }
    #main-header nav { display: none; }
    .resume-button { margin-left: auto; padding: 8px 20px; font-size: 0.85rem; }
    #mobile-menu-toggle { display: block; }
    .nav-links-mobile { display: flex; flex-direction: column; position: absolute; top: 0; left: 0; right: 0; background-color: rgba(15, 16, 28, 0.92); backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px); padding-top: var(--nav-height); padding-bottom: 1.5rem; box-shadow: 0 10px 30px rgba(0,0,0,0.35); transform: translateY(-100%); transition: transform 0.4s cubic-bezier(0.645, 0.045, 0.355, 1); opacity: 0; visibility: hidden; border-bottom-left-radius: var(--border-radius-md); border-bottom-right-radius: var(--border-radius-md); }
    .nav-links-mobile.active { transform: translateY(0); opacity: 1; visibility: visible; }
    .nav-links-mobile a { padding: 0.9rem 2rem; text-align: center; width: 100%; font-size: 1.1rem; font-weight: 500; }
    .nav-links-mobile a::after { display: none; }

    .timeline::before { left: 20px; }
    .timeline-item { width: 100%; padding-left: 55px; padding-right: 10px; margin-bottom: 35px;}
    .timeline-item.right, .timeline-item.left { left: 0; }
    .timeline-item.left::after, .timeline-item.right::after { left: 10px; width: 18px; height: 18px;}

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

@media (max-width: 576px) {
    :root { --section-padding: 5rem 1rem; --border-radius-lg: 16px; --border-radius-md: 10px;}
    h2.section-title { font-size: 1.8rem; margin-bottom: 3rem; }
    h2.section-title::after { width: 55px; bottom: -12px;}

    .hero-content h1 { font-size: clamp(2.6rem, 9vw, 4rem); }
    .hero-subtitle { font-size: 1rem; }
    .cta-button { padding: 14px 35px; font-size: 1rem;}

    .timeline::before { left: 15px; width: 2.5px;}
    .timeline-item { padding-left: 45px; }
    .timeline-item::after { left: 5.5px; width: 18px; height: 18px; border-width: 3.5px;}
    .timeline-content { padding: 1.5rem; }

    .about-layout-grid { gap: 2rem;}
    .education-highlight { padding: 1.2rem; gap: 1rem;}
    .education-icon { font-size: 2rem;}
    .about-passions { padding: 1.5rem; } 
    .passions-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem;}

    .connect-links { gap: 1rem; }
    .connect-button { width: 100%; justify-content: center; padding: 14px 25px; font-size: 1rem;}

    .scroll-down-arrow { font-size: 1.3rem; bottom: 30px; }
    .bubble { opacity: 0.08; }
    .bubble.b4, .bubble.b7 { display: none; }
}