/* =========================================================== Mousumi Das — Portfolio styles Theme via CSS variables; dark is default, light toggled on =========================================================== */ :root { --bg: #0b0f17; --bg-alt: #0f1521; --surface: #131a28; --surface-2: #182031; --border: #243349; --text: #e8edf6; --text-dim: #9aa7bd; --text-faint: #6b7a93; --accent: #6ea8fe; --accent-2: #8b7bff; --accent-grad: linear-gradient(120deg, #6ea8fe, #8b7bff 55%, #c084fc); --shadow: 0 18px 40px -20px rgba(0, 0, 0, 0.7); --radius: 16px; --maxw: 1080px; } html[data-theme="light"] { --bg: #f7f9fc; --bg-alt: #eef2f8; --surface: #ffffff; --surface-2: #f1f5fb; --border: #dde4ef; --text: #16202e; --text-dim: #4a586b; --text-faint: #7a8699; --accent: #3b6fe0; --accent-2: #7c5cff; --shadow: 0 18px 40px -24px rgba(20, 40, 80, 0.35); } * { box-sizing: border-box; margin: 0; padding: 0; } html { scroll-behavior: smooth; scroll-padding-top: 84px; } body { font-family: "Inter", system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); line-height: 1.65; -webkit-font-smoothing: antialiased; transition: background 0.3s ease, color 0.3s ease; } .container { width: min(var(--maxw), 92%); margin: 0 auto; } h1, h2, h3 { font-family: "Space Grotesk", "Inter", sans-serif; line-height: 1.2; } a { color: var(--accent); text-decoration: none; } em { color: var(--accent); font-style: normal; } /* ===== Navigation ===== */ .nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(12px); background: color-mix(in srgb, var(--bg) 78%, transparent); border-bottom: 1px solid var(--border); transition: background 0.3s ease; } .nav__inner { width: min(var(--maxw), 92%); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 64px; } .nav__brand-spacer { width: 40px; } .nav__links { display: flex; gap: 1.4rem; } .nav__links a { color: var(--text-dim); font-weight: 500; font-size: 0.93rem; position: relative; transition: color 0.2s; } .nav__links a:hover, .nav__links a.active { color: var(--text); } .nav__links a.active::after { content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 100%; background: var(--accent-grad); border-radius: 2px; } .nav__actions { display: flex; gap: 0.5rem; align-items: center; } .icon-btn { background: var(--surface); border: 1px solid var(--border); color: var(--text); width: 38px; height: 38px; border-radius: 10px; cursor: pointer; font-size: 1rem; display: grid; place-items: center; transition: 0.2s; } .icon-btn:hover { border-color: var(--accent); transform: translateY(-1px); } .nav__burger { display: none; } /* ===== Hero ===== */ .hero { position: relative; overflow: hidden; padding: clamp(3rem, 8vw, 6rem) 0; } .hero__bg { position: absolute; inset: 0; z-index: 0; background: radial-gradient(60% 50% at 80% 0%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%), radial-gradient(50% 50% at 0% 30%, color-mix(in srgb, var(--accent-2) 18%, transparent), transparent 70%); pointer-events: none; } .hero__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.5fr 1fr; gap: 3rem; align-items: center; } .hero__eyebrow { text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.78rem; font-weight: 600; color: var(--accent); margin-bottom: 0.8rem; } .hero__name { font-size: clamp(2.6rem, 6vw, 4.2rem); font-weight: 700; letter-spacing: -0.02em; background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; } .hero__email { margin-top: 0.4rem; font-size: 1rem; } .hero__email a { color: var(--text-dim); font-weight: 500; } .hero__email a:hover { color: var(--accent); } .hero__tagline { font-size: clamp(1.05rem, 2vw, 1.35rem); margin: 1rem 0 0.6rem; max-width: 42ch; } .hero__sub { color: var(--text-dim); max-width: 46ch; } .hero__cta { display: flex; gap: 0.8rem; margin: 1.6rem 0 1.2rem; flex-wrap: wrap; } .btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.7rem 1.3rem; border-radius: 12px; font-weight: 600; font-size: 0.95rem; transition: 0.2s; cursor: pointer; border: 1px solid transparent; } .btn--primary { background: var(--accent-grad); color: #fff; } .btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 24px -10px var(--accent); } .btn--ghost { background: var(--surface); border-color: var(--border); color: var(--text); } .btn--ghost:hover { border-color: var(--accent); transform: translateY(-2px); } .hero__links { display: flex; flex-wrap: wrap; gap: 1.2rem; margin-top: 0.6rem; } .hero__links-break { flex-basis: 100%; height: 0; } .hero__links a { display: inline-flex; align-items: center; gap: 0.4rem; color: var(--text-dim); font-size: 0.92rem; font-weight: 500; transition: 0.2s; } .hero__links a:hover { color: var(--accent); } .hero__links svg { width: 1.05em; height: 1.05em; fill: currentColor; flex-shrink: 0; } .hero__photo { display: grid; place-items: center; } .photo-frame { position: relative; width: 240px; height: 240px; border-radius: 50%; padding: 5px; background: var(--accent-grad); box-shadow: var(--shadow); display: grid; place-items: center; } .photo-frame img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; } .photo-initials { display: none; font-family: "Space Grotesk"; font-size: 4rem; font-weight: 700; color: #fff; } .photo-frame--empty { background: var(--accent-grad); } .photo-frame--empty .photo-initials { display: block; } /* ===== Sections ===== */ .section { padding: clamp(3rem, 7vw, 5.5rem) 0; } .section--alt { background: var(--bg-alt); } .section--tight { padding: 0.5rem 0 clamp(2rem, 5vw, 3.5rem); } .section__title { font-size: clamp(1.6rem, 3.5vw, 2.2rem); margin-bottom: 2rem; } /* ===== About ===== */ .about { display: grid; grid-template-columns: 1.8fr 1fr; gap: 2.5rem; align-items: start; } .about__text p { margin-bottom: 1rem; color: var(--text-dim); } .about__text strong { color: var(--text); } .about__facts { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; box-shadow: var(--shadow); } .about__facts h3 { font-size: 1.05rem; margin-bottom: 1rem; } .about__facts ul { list-style: none; display: grid; gap: 0.75rem; } .about__facts li { display: flex; gap: 0.7rem; color: var(--text-dim); font-size: 0.95rem; } .about__facts li span { width: 1.4rem; } /* ===== Cards ===== */ .cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; } .cards--3 { grid-template-columns: repeat(3, 1fr); } .card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; transition: 0.25s; position: relative; overflow: hidden; } .card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow); } .card__icon { font-size: 1.8rem; margin-bottom: 0.7rem; } .card h3 { font-size: 1.12rem; margin-bottom: 0.5rem; } .card p { color: var(--text-dim); font-size: 0.94rem; } .card--project { display: flex; flex-direction: column; } .card__tag { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; color: var(--accent); margin-bottom: 0.6rem; } .card__metrics { list-style: none; display: flex; gap: 1.2rem; margin: 0.9rem 0; } .card__metrics li { font-size: 0.82rem; color: var(--text-dim); } .card__metrics strong { display: block; font-size: 1.3rem; color: var(--text); font-family: "Space Grotesk"; } .card__link { font-size: 0.88rem; font-weight: 600; margin-top: 0.6rem; } .card__date { margin-top: auto; padding-top: 0.9rem; font-size: 0.8rem; color: var(--text-faint); } /* ===== News ===== */ .news { list-style: none; display: grid; gap: 0.9rem; max-width: 820px; } .news__item { display: grid; grid-template-columns: 92px 1fr; gap: 1.2rem; align-items: baseline; padding-bottom: 0.9rem; border-bottom: 1px solid var(--border); } .news__item:last-child { border-bottom: none; } .news__date { font-family: "Space Grotesk"; font-weight: 600; font-size: 0.88rem; color: var(--accent); white-space: nowrap; } .news__item p { color: var(--text-dim); font-size: 0.96rem; } .news__item strong { color: var(--text); } /* ===== Research (papers) ===== */ .research__subtitle { font-size: 1.15rem; color: var(--text-dim); margin: 0 0 1.2rem; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; } .research__interests { margin-bottom: 0.5rem; } .research__subtitle--spaced { margin-top: 3rem; } .research__interests-list { list-style: disc; padding-left: 1.4rem; margin: 0; max-width: 70ch; } .research__interests-list li { margin-bottom: 0.55rem; line-height: 1.6; color: var(--text-dim); } .research__interests-list li strong { color: var(--text); } .paper { display: grid; grid-template-columns: 300px 1fr; column-gap: 1.5rem; align-items: center; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; transition: 0.25s; } .paper + .paper { margin-top: 1.2rem; } .paper:hover { border-color: var(--accent); box-shadow: var(--shadow); } .paper__media { grid-column: 1; align-self: center; border-radius: 12px; overflow: hidden; background: var(--surface-2); border: 1px solid var(--border); } .paper__body { grid-column: 2; } .paper__media img, .paper__media video { display: block; width: 100%; height: auto; } .paper__slideshow { position: relative; aspect-ratio: 16 / 9; } .paper__slideshow img, .paper__slideshow video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 0.8s ease; } .paper__slideshow img.active, .paper__slideshow video.active { opacity: 1; } .paper__media--placeholder { display: grid; place-items: center; min-height: 140px; text-align: center; color: var(--text-faint); font-size: 0.85rem; font-weight: 500; background: repeating-linear-gradient( -45deg, var(--surface-2), var(--surface-2) 12px, color-mix(in srgb, var(--surface-2) 85%, var(--accent)) 12px, color-mix(in srgb, var(--surface-2) 85%, var(--accent)) 24px ); } .paper__title { font-size: 1.12rem; margin-bottom: 0.35rem; } .paper__authors { color: var(--text-dim); font-size: 0.92rem; margin-bottom: 0.6rem; } .paper__authors strong { color: var(--text); } .paper__desc { color: var(--text-dim); font-size: 0.94rem; margin-bottom: 0.6rem; } .paper__venue { color: var(--text-faint); font-size: 0.88rem; font-style: italic; } .paper__links { margin-top: 0.5rem; display: flex; gap: 0.9rem; } .paper__links a { font-weight: 600; font-size: 0.88rem; text-transform: lowercase; border: 1px solid var(--border); border-radius: 8px; padding: 0.25rem 0.7rem; transition: 0.2s; } .paper__links a:hover { border-color: var(--accent); transform: translateY(-1px); } .pub-note { margin-top: 1.2rem; font-size: 0.82rem; color: var(--text-faint); } /* ===== Contact ===== */ .contact { text-align: center; } .contact .section__title { justify-content: center; } .contact__lead { color: var(--text-dim); max-width: 50ch; margin: 0 auto 2rem; } .contact__links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; } .contact__card { display: flex; align-items: center; gap: 0.8rem; text-align: left; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.2rem; color: var(--text); transition: 0.2s; } .contact__card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow); } .contact__icon { width: 40px; height: 40px; flex-shrink: 0; display: grid; place-items: center; border-radius: 10px; background: #fff; border: 1px solid var(--border); } .contact__icon svg { width: 24px; height: 24px; display: block; } .contact__card span:last-child { font-size: 0.85rem; color: var(--text-dim); } .contact__card strong { color: var(--text); } /* ===== Footer ===== */ .footer { border-top: 1px solid var(--border); padding: 1.6rem 0; } .footer__inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.8rem; } .footer p { color: var(--text-faint); font-size: 0.86rem; } .footer__top { font-size: 0.86rem; font-weight: 600; } /* ===== Reveal animation ===== */ .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; } .reveal.visible { opacity: 1; transform: none; } /* ===== Responsive ===== */ @media (max-width: 860px) { .hero__inner { grid-template-columns: 1fr; } .hero__photo { order: -1; } .photo-frame { width: 170px; height: 170px; } .about { grid-template-columns: 1fr; } .cards, .cards--3 { grid-template-columns: 1fr; } .contact__links { grid-template-columns: repeat(2, 1fr); } .paper { grid-template-columns: 1fr; } .paper__body { grid-column: 1; } .paper__media { grid-column: 1; max-width: 380px; } .news__item { grid-template-columns: 1fr; gap: 0.15rem; } .nav__links { position: fixed; inset: 64px 0 auto 0; flex-direction: column; gap: 0; background: var(--bg); border-bottom: 1px solid var(--border); transform: translateY(-150%); transition: transform 0.3s ease; padding: 0.5rem 0; } .nav__links.open { transform: translateY(0); } .nav__links a { padding: 0.9rem 7%; width: 100%; } .nav__burger { display: grid; } } @media (max-width: 480px) { .contact__links { grid-template-columns: 1fr; } } @media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }