/* ========================================================================== Lalit Pathak — Shared site stylesheet One file, used by every page. Edit here once; every page updates. ========================================================================== */ :root { --primary-color: #2a6e3f; --primary-dark: #1e4f2d; --primary-light: #3d8c55; --secondary-color: #1a365d; --accent-color: #e9c46a; --light-color: #f8f9fa; --dark-color: #343a40; --gray-color: #6c757d; --light-gray: #e9ecef; --border-radius: 8px; --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08); --transition: all 0.3s ease; --card-bg: #ffffff; --body-bg: #ffffff; --nav-bg: rgba(255, 255, 255, 0.95); --border-color: var(--light-gray); } /* ---- Dark theme overrides (toggled via [data-theme="dark"] on ) ---- */ html[data-theme="dark"] { --light-color: #1f2937; --dark-color: #e8eaed; --gray-color: #a8b0bb; --light-gray: #2f3947; --card-bg: #17202b; --body-bg: #10161f; --nav-bg: rgba(16, 22, 31, 0.92); --border-color: #2b3646; --box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35); } html[data-theme="dark"] body { color: var(--dark-color); background-color: var(--body-bg); } html[data-theme="dark"] h1, html[data-theme="dark"] h2, html[data-theme="dark"] h3, html[data-theme="dark"] h4 { color: #f2f4f7; } html[data-theme="dark"] h2 { border-bottom-color: var(--light-gray); } html[data-theme="dark"] .nav-logo { color: #f2f4f7; } html[data-theme="dark"] .nav-menu a { color: #d7dce3; } html[data-theme="dark"] .skill-category, html[data-theme="dark"] .project-card, html[data-theme="dark"] .publication-item, html[data-theme="dark"] .training-card, html[data-theme="dark"] .blog-card, html[data-theme="dark"] .progress-container, html[data-theme="dark"] .stat-card, html[data-theme="dark"] .contact-card { background-color: var(--card-bg); } html[data-theme="dark"] .experience-content { background-color: var(--card-bg); } html[data-theme="dark"] .menu_trigger, html[data-theme="dark"] .nav-menu a:not(.active) { color: #d7dce3; } * { margin: 0; padding: 0; box-sizing: border-box; } html { scroll-behavior: smooth; } body { font-family: 'Open Sans', sans-serif; font-size: 16px; line-height: 1.6; color: var(--dark-color); background-color: var(--body-bg); display: flex; flex-direction: column; min-height: 100vh; transition: background-color 0.3s ease, color 0.3s ease; animation: page-fade-in 0.5s ease both; } @keyframes page-fade-in { from { opacity: 0; } to { opacity: 1; } } h1, h2, h3, h4, h5, h6 { font-family: 'Montserrat', sans-serif; font-weight: 600; line-height: 1.3; margin-bottom: 1rem; color: var(--secondary-color); } h1 { font-size: 2.5rem; font-weight: 700; } h2 { font-size: 2rem; margin-top: 2.5rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--light-gray); } h3 { font-size: 1.5rem; color: var(--primary-color); } p { margin-bottom: 1.5rem; } a { color: var(--primary-color); text-decoration: none; transition: var(--transition); } a:hover { color: var(--primary-dark); } img { max-width: 100%; } .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; } .btn { display: inline-block; padding: 10px 24px; background-color: var(--primary-color); color: white; border: none; border-radius: var(--border-radius); font-weight: 600; font-size: 1rem; cursor: pointer; transition: var(--transition); text-align: center; } .btn:hover { background-color: var(--primary-dark); color: white; transform: translateY(-2px); box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1); } .btn-outline { background-color: transparent; border: 2px solid var(--primary-color); color: var(--primary-color); } .btn-outline:hover { background-color: var(--primary-color); color: white; } .btn-outline.on-dark { border-color: rgba(255,255,255,0.8); color: #fff; } .btn-outline.on-dark:hover { background-color: rgba(255,255,255,0.15); color: #fff; } .hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; } /* Skip link for accessibility */ .skip-link { position: absolute; left: -9999px; top: 0; background: var(--primary-color); color: #fff; padding: 10px 18px; z-index: 2000; border-radius: 0 0 6px 0; } .skip-link:focus { left: 0; } /* ---------------- Header (hero) ---------------- */ #header { background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-dark) 100%); color: white; padding: 100px 0 80px; text-align: center; position: relative; overflow: hidden; } #header::before { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-image: url('data:image/svg+xml;utf8,'); background-size: cover; background-position: center bottom; } .header-content { position: relative; z-index: 1; } .page-title { font-size: 3rem; font-weight: 700; margin-bottom: 1rem; color: white; } .page-subtitle { font-size: 1.3rem; font-weight: 400; margin-bottom: 2rem; color: rgba(255, 255, 255, 0.9); max-width: 700px; margin-left: auto; margin-right: auto; } /* ---------------- Navigation ---------------- */ #nav { position: fixed; top: 0; left: 0; width: 100%; background-color: var(--nav-bg); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); z-index: 1000; padding: 15px 0; transition: var(--transition); backdrop-filter: blur(6px); } .nav-container { display: flex; justify-content: space-between; align-items: center; } .nav-logo { font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 1.5rem; color: var(--secondary-color); display: inline-block; transition: color 0.25s ease, transform 0.25s ease; } .nav-logo:hover { color: var(--primary-color); transform: translateY(-1px); } .nav-right { display: flex; align-items: center; gap: 1.5rem; } .nav-menu { display: flex; list-style: none; } .nav-menu li { margin-left: 2rem; } .nav-menu a { color: var(--dark-color); font-weight: 500; padding: 5px 0; position: relative; } .nav-menu a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background-color: var(--primary-color); transition: var(--transition); } .nav-menu a:hover::after, .nav-menu a.active::after { width: 100%; } .nav-menu a.active { color: var(--primary-color); } .theme-toggle { background: none; border: 2px solid var(--light-gray); color: var(--dark-color); width: 38px; height: 38px; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 0.95rem; transition: var(--transition); flex-shrink: 0; } .theme-toggle:hover { border-color: var(--primary-color); color: var(--primary-color); transform: rotate(15deg); } .theme-toggle:active { transform: scale(0.9); } .theme-toggle i { transition: transform 0.5s ease, opacity 0.3s ease; } .theme-toggle.is-switching i { transform: rotate(180deg) scale(0.6); opacity: 0; } .theme-toggle .fa-sun { display: none; } html[data-theme="dark"] .theme-toggle .fa-moon { display: none; } html[data-theme="dark"] .theme-toggle .fa-sun { display: inline-block; } .menu_trigger { display: none; font-size: 1.5rem; color: var(--dark-color); background: none; border: none; cursor: pointer; } /* ---------------- Main ---------------- */ #main { padding: 80px 0; flex: 1; } .section-intro { margin-bottom: 3rem; } .intro-text { font-size: 1.2rem; line-height: 1.8; color: var(--gray-color); } .highlight { color: var(--primary-color); font-weight: 600; } /* Reveal-on-scroll animation, applied by js/site.js */ .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; } .reveal.is-visible { opacity: 1; transform: translateY(0); } /* Reveal-on-scroll for individual cards inside a grid — js/site.js sets --i per child so they cascade in one after another instead of popping in together. */ .reveal-item { opacity: 0; transform: translateY(18px); transition: opacity 0.5s ease, transform 0.5s ease; transition-delay: calc(var(--i, 0) * 0.07s); } .reveal-item.is-visible { opacity: 1; transform: translateY(0); } /* Hero entrance sequence — plays once on load, no scroll needed */ .hero-in { opacity: 0; animation: hero-fade-up 0.7s ease forwards; animation-delay: calc(var(--i, 0) * 0.12s + 0.1s); } @keyframes hero-fade-up { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: translateY(0); } } /* Gentle zoom on card/thumbnail images when their card is hovered */ .img-zoom { overflow: hidden; } .img-zoom img { transition: transform 0.5s ease; } .img-zoom:hover img { transform: scale(1.06); } /* Reading progress bar — auto-injected by js/site.js on article pages */ #reading-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0%; background: linear-gradient(90deg, var(--primary-color), var(--accent-color)); z-index: 1100; transition: width 0.12s ease; } /* Accessible keyboard focus ring, only shown for keyboard navigation */ a:focus-visible, button:focus-visible, .btn:focus-visible, input:focus-visible, textarea:focus-visible, .filter-btn:focus-visible, .category-card:focus-visible { outline: 3px solid var(--primary-color); outline-offset: 2px; border-radius: 4px; } /* Loading state for buttons (e.g. the contact form's submit button) */ @keyframes lp-spin { to { transform: rotate(360deg); } } .btn.is-loading { position: relative; color: transparent !important; pointer-events: none; } .btn.is-loading::after { content: ''; position: absolute; top: 50%; left: 50%; width: 16px; height: 16px; margin: -8px 0 0 -8px; border: 2px solid rgba(255, 255, 255, 0.4); border-top-color: #fff; border-radius: 50%; animation: lp-spin 0.7s linear infinite; } /* Contact form status message (success/error), injected by form-handler.js */ #form-status { animation: hero-fade-up 0.35s ease both; } /* Respect the user's OS-level request for less motion: shorten/disable everything above (and any per-page inline transitions) to near-instant. */ @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; } .reveal, .reveal-item, .hero-in { opacity: 1 !important; transform: none !important; } } /* ---------------- Stats strip (used on homepage) ---------------- */ .stats-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1.5rem; margin: 2.5rem 0 1rem; } .stat-card { background-color: var(--light-color); border-radius: var(--border-radius); box-shadow: var(--box-shadow); padding: 1.5rem 1rem; text-align: center; } .stat-number { font-family: 'Montserrat', sans-serif; font-size: 2.3rem; font-weight: 700; color: var(--primary-color); line-height: 1; margin-bottom: 0.4rem; } .stat-label { font-size: 0.9rem; color: var(--gray-color); font-weight: 500; } /* ---------------- Tags / badges ---------------- */ .tag { display: inline-block; padding: 3px 12px; border-radius: 20px; font-size: 0.78rem; font-weight: 600; background-color: var(--light-gray); color: var(--gray-color); } .tag-accent { background-color: var(--accent-color); color: var(--dark-color); } .tag-primary { background-color: var(--primary-color); color: #fff; } /* ---------------- Filter / search bar (portfolio + blog) ---------------- */ .filter-bar { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; margin: 1.5rem 0 0.5rem; } .filter-btn { background: var(--light-color); border: 1px solid var(--light-gray); color: var(--gray-color); padding: 6px 16px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: var(--transition); } .filter-btn:hover { border-color: var(--primary-color); color: var(--primary-color); transform: translateY(-1px); } .filter-btn:active { transform: scale(0.95); } .filter-btn.active { background-color: var(--primary-color); border-color: var(--primary-color); color: #fff; } .search-input { flex: 1; min-width: 200px; padding: 8px 16px; border-radius: 20px; border: 1px solid var(--light-gray); font-family: inherit; font-size: 0.9rem; background-color: var(--card-bg); color: var(--dark-color); } .search-input:focus { outline: none; border-color: var(--primary-color); } .empty-state { color: var(--gray-color); font-style: italic; padding: 2rem 0; } .skeleton { background: linear-gradient(90deg, var(--light-gray) 25%, var(--border-color) 37%, var(--light-gray) 63%); background-size: 400% 100%; animation: skeleton-loading 1.4s ease infinite; border-radius: var(--border-radius); min-height: 120px; } @keyframes skeleton-loading { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } } /* ---------------- Back to top ---------------- */ #back-to-top { position: fixed; bottom: 28px; right: 28px; width: 46px; height: 46px; border-radius: 50%; background-color: var(--primary-color); color: #fff; border: none; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; cursor: pointer; box-shadow: 0 6px 16px rgba(0,0,0,0.2); opacity: 0; visibility: hidden; transform: translateY(10px); transition: var(--transition); z-index: 900; } #back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); } #back-to-top:hover { background-color: var(--primary-dark); transform: translateY(-3px); } #back-to-top:active { transform: translateY(-1px) scale(0.94); } /* ---------------- Footer ---------------- */ #footer { background-color: var(--secondary-color); color: white; padding: 60px 0 30px; width: 100%; margin-top: auto; } .footer-content { display: flex; flex-direction: column; align-items: center; text-align: center; } .footer-tagline { color: rgba(255,255,255,0.75); max-width: 480px; margin: -1.2rem 0 1.8rem; font-size: 0.95rem; } .social { display: flex; list-style: none; margin-bottom: 2rem; flex-wrap: wrap; justify-content: center; } .social li { margin: 0 10px; } .social a { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; background-color: rgba(255, 255, 255, 0.1); border-radius: 50%; color: white; transition: var(--transition); } .social a:hover { background-color: var(--primary-color); transform: translateY(-3px); } .footer-links { display: flex; gap: 1.5rem; margin-bottom: 1.5rem; flex-wrap: wrap; justify-content: center; } .footer-links a { color: rgba(255,255,255,0.75); font-size: 0.9rem; } .footer-links a:hover { color: #fff; } .copy { color: rgba(255, 255, 255, 0.7); font-size: 0.9rem; } /* ---------------- Responsive ---------------- */ @media (max-width: 768px) { h1 { font-size: 2rem; } h2 { font-size: 1.75rem; } .page-title { font-size: 2.5rem; } .page-subtitle { font-size: 1.1rem; } .nav-menu { position: fixed; top: 70px; right: -100%; flex-direction: column; background-color: var(--nav-bg); width: 80%; height: calc(100vh - 70px); box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1); transition: var(--transition); padding: 2rem; } .nav-menu.active { right: 0; } .nav-menu li { margin: 0 0 1.5rem 0; } .menu_trigger { display: block; } .menu_trigger.is-open i { transform: rotate(90deg); } .menu_trigger i { display: inline-block; transition: transform 0.3s ease; } /* Links cascade in one-by-one as the mobile menu opens */ .nav-menu a { opacity: 0; transform: translateX(16px); transition: opacity 0.3s ease, transform 0.3s ease; } .nav-menu.active a { opacity: 1; transform: none; } .nav-menu.active li:nth-child(1) a { transition-delay: 0.05s; } .nav-menu.active li:nth-child(2) a { transition-delay: 0.1s; } .nav-menu.active li:nth-child(3) a { transition-delay: 0.15s; } .nav-menu.active li:nth-child(4) a { transition-delay: 0.2s; } .nav-menu.active li:nth-child(5) a { transition-delay: 0.25s; } } @media (max-width: 576px) { .container { padding: 0 15px; } #header { padding: 80px 0 60px; } #main { padding: 60px 0; } #back-to-top { right: 16px; bottom: 16px; } }