/* ============================================================== Study Hub — Notes & Question Paper design system ============================================================== Shared by: index.class-10-notes.html index.class-10-papers.html index.class-11-notes.html index.class-11-papers.html index.class-12-notes.html index.class-12-papers.html index.class11-physics.html index.old-question-paper.html index.class-11-chemistry.html index.class12 physics.html Each page keeps its own existing colour identity. The accent is driven by the variables below — notes pages use the original teal palette, paper pages switch to the original blue palette with class="theme-papers" on . ============================================================== */ /* ---------- Notes palette (original teal identity) ---------- */ :root { --sn-accent: #52ab98; --sn-accent-dark: #2b6777; --sn-accent-soft: #e6f4f1; --sn-accent-glow: rgba(82, 171, 152, 0.35); --sn-ink: #16232b; --sn-ink-soft: #5b6b74; --sn-line: rgba(43, 103, 119, 0.14); --sn-surface: #ffffff; --sn-surface-soft: #f7fbfa; --sn-radius: 20px; --sn-radius-sm: 14px; --sn-shadow-sm: 0 4px 14px rgba(20, 45, 55, 0.07); --sn-shadow: 0 14px 38px rgba(20, 45, 55, 0.12); --sn-shadow-lg: 0 28px 64px rgba(20, 45, 55, 0.18); --sn-page-bg: linear-gradient(170deg, #eaf6f3 0%, #f7fbfa 42%, #ffffff 100%); } /* ---------- Question-paper palette (original blue identity) ---------- */ body.theme-papers { --sn-accent: #2563eb; --sn-accent-dark: #1e3a8a; --sn-accent-soft: #e3edff; --sn-accent-glow: rgba(37, 99, 235, 0.32); --sn-line: rgba(37, 99, 235, 0.16); --sn-page-bg: linear-gradient(170deg, #dbeafe 0%, #eef4fe 45%, #ffffff 100%); } * { box-sizing: border-box; } html { scroll-behavior: smooth; } body.sn-page { margin: 0; padding: 0; min-height: 100vh; font-family: 'Plus Jakarta Sans', 'Segoe UI', system-ui, -apple-system, sans-serif; color: var(--sn-ink); background: var(--sn-page-bg); background-attachment: fixed; -webkit-font-smoothing: antialiased; display: flex; flex-direction: column; } /* ============================================================== Header ============================================================== */ .sn-header { position: relative; overflow: hidden; padding: 40px 20px 46px; text-align: center; color: #fff; background: linear-gradient(135deg, var(--sn-accent-dark), var(--sn-accent)); border-radius: 0 0 34px 34px; box-shadow: var(--sn-shadow); } .sn-header::before, .sn-header::after { content: ''; position: absolute; border-radius: 50%; pointer-events: none; } .sn-header::before { width: 340px; height: 340px; top: -170px; right: -90px; background: radial-gradient(circle, rgba(255,255,255,0.22), transparent 68%); } .sn-header::after { width: 260px; height: 260px; bottom: -150px; left: -70px; background: radial-gradient(circle, rgba(255,255,255,0.14), transparent 70%); } .sn-header-inner { position: relative; z-index: 1; max-width: 820px; margin: 0 auto; } .sn-back { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; color: rgba(255,255,255,0.85); text-decoration: none; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2); padding: 7px 14px; border-radius: 9999px; margin-bottom: 18px; transition: background .2s, transform .2s; } .sn-back:hover { background: rgba(255,255,255,0.22); transform: translateY(-1px); } .sn-eyebrow { display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: 1.6px; text-transform: uppercase; color: rgba(255,255,255,0.82); margin-bottom: 10px; } .sn-title { margin: 0 0 10px; font-size: clamp(1.7rem, 4.2vw, 2.6rem); font-weight: 800; letter-spacing: -0.6px; line-height: 1.15; display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; } .sn-title svg { flex: 0 0 auto; } .sn-subtitle { margin: 0 auto; max-width: 560px; font-size: 15px; line-height: 1.6; color: rgba(255,255,255,0.86); } .sn-header-stats { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 22px; } .sn-chip { display: inline-flex; align-items: center; gap: 7px; font-size: 12.5px; font-weight: 600; color: #fff; background: rgba(255,255,255,0.14); border: 1px solid rgba(255,255,255,0.22); padding: 7px 14px; border-radius: 9999px; } .sn-chip i { width: 7px; height: 7px; border-radius: 50%; background: #7ef0c9; box-shadow: 0 0 0 3px rgba(126,240,201,0.25); } /* ============================================================== Layout ============================================================== */ .sn-main { flex: 1; width: 100%; max-width: 1060px; margin: 0 auto; padding: 40px 20px 10px; } .sn-section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; } .sn-section-title { margin: 0; font-size: 1.15rem; font-weight: 800; letter-spacing: -0.3px; color: var(--sn-ink); } .sn-section-note { margin: 4px 0 0; font-size: 13px; color: var(--sn-ink-soft); } .sn-tip { font-size: 12.5px; font-weight: 600; color: var(--sn-accent-dark); background: var(--sn-accent-soft); border: 1px solid var(--sn-line); padding: 7px 13px; border-radius: 9999px; white-space: nowrap; } /* ============================================================== Chapter / paper cards ============================================================== */ .sn-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(272px, 1fr)); gap: 14px; margin-bottom: 38px; } .sn-card { position: relative; display: flex; align-items: center; gap: 14px; width: 100%; text-align: left; font: inherit; color: inherit; cursor: pointer; padding: 16px 16px 16px 14px; background: var(--sn-surface); border: 1px solid var(--sn-line); border-radius: var(--sn-radius-sm); box-shadow: var(--sn-shadow-sm); text-decoration: none; transition: transform .22s cubic-bezier(.2,.8,.3,1), box-shadow .22s, border-color .22s; overflow: hidden; } .sn-card::after { content: ''; position: absolute; inset: 0 auto 0 0; width: 4px; background: linear-gradient(180deg, var(--sn-accent), var(--sn-accent-dark)); opacity: 0; transition: opacity .22s; } .sn-card:hover, .sn-card:focus-visible { transform: translateY(-3px); border-color: var(--sn-accent); box-shadow: var(--sn-shadow); outline: none; } .sn-card:hover::after, .sn-card:focus-visible::after { opacity: 1; } .sn-card.is-active { border-color: var(--sn-accent); background: var(--sn-surface-soft); box-shadow: 0 0 0 3px var(--sn-accent-glow), var(--sn-shadow); } .sn-card.is-active::after { opacity: 1; } .sn-card-num { flex: 0 0 auto; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 800; color: #fff; border-radius: 12px; background: linear-gradient(135deg, var(--sn-accent), var(--sn-accent-dark)); box-shadow: 0 4px 12px var(--sn-accent-glow); } .sn-card-body { flex: 1; min-width: 0; } .sn-card-title { display: block; font-size: 14.5px; font-weight: 700; color: var(--sn-ink); line-height: 1.35; } .sn-card-sub { display: block; margin-top: 3px; font-size: 12px; color: var(--sn-ink-soft); } .sn-card-state { flex: 0 0 auto; font-size: 11px; font-weight: 700; letter-spacing: .4px; text-transform: uppercase; padding: 4px 10px; border-radius: 9999px; color: var(--sn-accent-dark); background: var(--sn-accent-soft); border: 1px solid var(--sn-line); } .sn-card.is-soon .sn-card-num { background: #eef1f4; color: #8a97a0; box-shadow: none; } .sn-card.is-soon { cursor: pointer; } .sn-card.is-soon .sn-card-state { color: #92620a; background: #fdf4e3; border-color: rgba(214, 158, 46, 0.28); } .sn-card.is-soon:hover { border-color: rgba(214, 158, 46, 0.5); box-shadow: 0 14px 30px rgba(146, 98, 10, 0.12); } .sn-card.is-soon:hover::after { background: linear-gradient(180deg, #f0b429, #d69e2e); } /* ============================================================== Viewer ============================================================== */ .sn-viewer { background: var(--sn-surface); border: 1px solid var(--sn-line); border-radius: var(--sn-radius); box-shadow: var(--sn-shadow); overflow: hidden; margin-bottom: 44px; scroll-margin-top: 18px; } .sn-viewer-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; padding: 16px 20px; background: linear-gradient(135deg, var(--sn-accent-dark), var(--sn-accent)); color: #fff; } .sn-viewer-eyebrow { font-size: 10.5px; font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase; color: rgba(255,255,255,0.75); } .sn-viewer-title { margin: 3px 0 0; font-size: 1.02rem; font-weight: 700; line-height: 1.3; } .sn-viewer-actions { display: flex; gap: 8px; flex-wrap: wrap; } .sn-btn { display: inline-flex; align-items: center; gap: 7px; font: inherit; font-size: 12.5px; font-weight: 600; color: #fff; text-decoration: none; background: rgba(255,255,255,0.16); border: 1px solid rgba(255,255,255,0.26); padding: 8px 14px; border-radius: 10px; cursor: pointer; transition: background .2s, transform .2s; } .sn-btn:hover { background: rgba(255,255,255,0.28); transform: translateY(-1px); } .sn-btn[hidden] { display: none; } .sn-frame-wrap { position: relative; background: var(--sn-surface-soft); min-height: 460px; } .sn-viewer.is-empty .sn-frame-wrap { min-height: 0; } .sn-frame { display: block; width: 100%; height: min(78vh, 860px); border: 0; background: #fff; } .sn-frame[hidden] { display: none; } .sn-placeholder, .sn-soon, .sn-loading { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 10px; padding: 60px 26px; min-height: 300px; } .sn-loading { position: absolute; inset: 0; background: rgba(247, 251, 250, 0.92); backdrop-filter: blur(3px); z-index: 2; } .sn-placeholder[hidden], .sn-soon[hidden], .sn-loading[hidden] { display: none; } .sn-placeholder svg, .sn-soon svg { opacity: .85; } .sn-placeholder h3, .sn-soon h3 { margin: 6px 0 0; font-size: 1.05rem; font-weight: 800; color: var(--sn-ink); } .sn-placeholder p, .sn-soon p { margin: 0; max-width: 460px; font-size: 14px; line-height: 1.65; color: var(--sn-ink-soft); } .sn-soon { background: linear-gradient(180deg, #fffaf0, #fffdf8); } .sn-soon-badge { display: inline-flex; align-items: center; gap: 7px; font-size: 11.5px; font-weight: 700; letter-spacing: .5px; text-transform: uppercase; color: #92620a; background: #fdf1da; border: 1px solid rgba(214, 158, 46, 0.3); padding: 6px 13px; border-radius: 9999px; } .sn-soon-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-top: 8px; } .sn-soon-wa { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 600; color: #fff; text-decoration: none; background: #25d366; padding: 10px 18px; border-radius: 10px; box-shadow: 0 8px 20px rgba(37, 211, 102, 0.28); transition: transform .2s, box-shadow .2s; } .sn-soon-wa:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(37, 211, 102, 0.38); } .sn-spinner { width: 30px; height: 30px; border-radius: 50%; border: 3px solid var(--sn-accent-soft); border-top-color: var(--sn-accent); animation: snSpin .8s linear infinite; } @keyframes snSpin { to { transform: rotate(360deg); } } .sn-loading p { margin: 0; font-size: 13.5px; font-weight: 600; color: var(--sn-ink-soft); } /* ============================================================== Support / WhatsApp / footer ============================================================== */ .sn-support { max-width: 1060px; margin: 0 auto 40px; padding: 0 20px; } .sn-support-box { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; padding: 26px 28px; border-radius: var(--sn-radius); background: linear-gradient(135deg, #0f2a33, #1d4d5c); color: #fff; box-shadow: var(--sn-shadow); } .sn-support-box h2 { margin: 0 0 6px; font-size: 1.12rem; font-weight: 800; display: flex; align-items: center; gap: 10px; } .sn-support-box p { margin: 0; font-size: 14px; line-height: 1.6; color: rgba(255,255,255,0.78); max-width: 560px; } .sn-support-actions { display: flex; gap: 10px; flex-wrap: wrap; } .sn-support-actions a { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 600; color: #fff; text-decoration: none; padding: 11px 20px; border-radius: 12px; transition: transform .2s, box-shadow .2s; } .sn-support-actions a:hover { transform: translateY(-2px); } .sn-wa { background: #25d366; box-shadow: 0 8px 22px rgba(37,211,102,.3); } .sn-wa:hover { box-shadow: 0 12px 28px rgba(37,211,102,.4); } .sn-home { background: rgba(255,255,255,0.14); border: 1px solid rgba(255,255,255,0.22); } .sn-home:hover { background: rgba(255,255,255,0.24); } .sn-footer { margin-top: auto; padding: 26px 20px; text-align: center; font-size: 13.5px; color: var(--sn-ink-soft); background: rgba(255,255,255,0.7); border-top: 1px solid var(--sn-line); backdrop-filter: blur(8px); } .sn-footer strong { color: var(--sn-accent-dark); } /* ============================================================== Responsive ============================================================== */ @media (max-width: 720px) { .sn-header { padding: 30px 16px 36px; border-radius: 0 0 24px 24px; } .sn-main { padding: 28px 14px 10px; } .sn-grid { grid-template-columns: 1fr; gap: 11px; } .sn-card { padding: 14px; } .sn-frame { height: 66vh; } .sn-frame-wrap { min-height: 320px; } .sn-support { padding: 0 14px; } .sn-support-box { padding: 22px 20px; } .sn-viewer-head { padding: 14px 16px; } .sn-btn { padding: 7px 12px; } .sn-tip { white-space: normal; } } @media (max-width: 420px) { .sn-card-state { display: none; } .sn-frame { height: 58vh; } } /* Respect reduced-motion preferences */ @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .sn-card, .sn-btn, .sn-support-actions a { transition: none; } .sn-spinner { animation-duration: 2s; } }