/* ============================================================ The Clarity Seminar — Clean/Minimal Seminar FLYER (poster) template/creative/html/seminar-clean-flyer-clarity-agenda ------------------------------------------------------------ Design language: a Swiss-grid agenda poster. Warm paper ground, near-black ink, one restrained slate-blue accent, hairline rules and generous whitespace. Type is an editorial serif display over a clean system sans, with mono-spaced datelines. The keyline, the ruled agenda table and the meta strip are drawn in CSS, so the layout needs no decorative imagery. Photography is an OPTIONAL layer: the template ships local SVG placeholders (venue strip, speaker portraits, gallery grid) that hosts replace with their own photos or remove entirely — nothing hotlinks, nothing can 404. Behaviour: - No JS: a normal scrolling page (all panels stacked). - JS on: fixed 100dvh shell; exactly one panel visible, that panel scrolls internally. Tabs derive from the DOM, so removed sections (RSVP/Guestbook off) hide their tabs. ============================================================ */ /* ---------- Design tokens ---------- */ :root { --bg: #FAFAF7; --bg-2: #F2F1EB; --ink: #171A1F; --ink-soft: #3F444D; --muted: #767C86; --line: rgba(23, 26, 31, 0.12); --line-strong: rgba(23, 26, 31, 0.26); --accent: #1E4E6F; --accent-deep: #163A54; --accent-soft: rgba(30, 78, 111, 0.09); --danger: #B3261E; --ok: #2E7D5B; --serif: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif; --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; --mono: "SF Mono", "Cascadia Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace; --radius: 10px; } /* ---------- Reset / base ---------- */ *, *::before, *::after { box-sizing: border-box; } html { height: 100%; } body { margin: 0; font-family: var(--sans); background: var(--bg); color: var(--ink); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; -webkit-text-size-adjust: 100%; } img { max-width: 100%; } /* Robust hidden handling: any element toggled with the hidden attribute (photo blocks, countdown, lightbox caption, …) is truly hidden even if an author rule sets display on it. */ [hidden] { display: none !important; } button, input, select, textarea { font: inherit; color: inherit; } h1, h2, h3, p, ol { margin-top: 0; } :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; } ::selection { background: rgba(30, 78, 111, 0.18); } /* ---------- App shell ---------- No-JS state: a normal document flow, page scrolls. JS state (.js on ): fixed viewport shell, one active panel. */ .app-shell { display: flex; flex-direction: column; min-height: 100vh; } .stage { flex: 1 1 auto; position: relative; } .panel { outline: none; } .panel-inner { max-width: 860px; margin: 0 auto; padding: clamp(1.5rem, 4vw, 2.6rem) clamp(1rem, 4vw, 1.75rem) clamp(2.4rem, 6vw, 3.5rem); } .js .app-shell { height: 100vh; height: 100dvh; overflow: hidden; } .js .stage { overflow: hidden; } .js .panel { display: none; height: 100%; overflow-y: auto; -webkit-overflow-scrolling: touch; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: rgba(30, 78, 111, 0.4) transparent; } .js .panel.is-active { display: block; } .js .panel:focus-visible { outline-offset: -2px; } @media (prefers-reduced-motion: no-preference) { .js .panel { scroll-behavior: smooth; } } /* ---------- Header ---------- */ .app-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.7rem 1rem; border-bottom: 1px solid var(--line); position: relative; z-index: 5; background: rgba(250, 250, 247, 0.9); backdrop-filter: blur(12px); } .brand { display: inline-flex; align-items: center; gap: 0.65rem; text-decoration: none; color: inherit; } .brand-mark { width: 2.1rem; height: 2.1rem; display: grid; place-items: center; border: 1px solid var(--accent); color: var(--accent); font-family: var(--serif); font-size: 0.8rem; letter-spacing: 0.08em; border-radius: 4px; } .brand-name { font-family: var(--serif); font-size: 0.95rem; letter-spacing: 0.12em; text-transform: uppercase; white-space: nowrap; } .brand-name em { font-style: normal; color: var(--accent); } /* Desktop pill nav — hidden by default, shown in JS mode at wide widths */ .topnav { display: none; gap: 0.25rem; } @media (min-width: 860px) { .js .topnav { display: flex; } } .topnav .tab-btn { background: none; border: 1px solid transparent; color: var(--muted); padding: 0.5rem 0.95rem; border-radius: 999px; cursor: pointer; font-size: 0.85rem; letter-spacing: 0.04em; } .topnav .tab-btn:hover { color: var(--ink); border-color: var(--line); } .topnav .tab-btn.is-active { color: var(--accent); border-color: var(--accent); } /* ---------- Bottom tab bar (touch) ---------- */ .app-tabs { display: none; } .js .app-tabs { display: flex; border-top: 1px solid var(--line); background: rgba(250, 250, 247, 0.94); backdrop-filter: blur(12px); padding: 0.35rem 0.3rem env(safe-area-inset-bottom); } .app-tabs .tab-btn { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 0.2rem; min-width: 0; padding: 0.45rem 0.15rem; background: none; border: 0; color: var(--muted); font-size: 0.62rem; letter-spacing: 0.06em; text-transform: uppercase; cursor: pointer; border-radius: 10px; } .app-tabs .tab-btn svg { width: 1.15rem; height: 1.15rem; stroke: currentColor; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; } .app-tabs .tab-btn.is-active { color: var(--accent); } .tab-btn[hidden] { display: none; } @media (min-width: 860px) { .js .app-tabs { display: none; } } /* ---------- Shared type bits ---------- */ .kicker { display: flex; align-items: center; justify-content: center; gap: 1rem; font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--accent); margin: 0 0 1.1rem; } .kicker::before, .kicker::after { content: ""; height: 1px; width: 2.4rem; background: var(--line-strong); } .panel-head { text-align: center; max-width: 680px; margin: 0 auto clamp(1.8rem, 5vw, 2.6rem); } .panel-title { font-family: var(--serif); font-weight: 600; font-size: clamp(1.9rem, 5vw, 2.8rem); line-height: 1.08; margin: 0 0 0.6rem; text-wrap: balance; } .panel-sub { color: var(--ink-soft); font-size: clamp(0.98rem, 2vw, 1.08rem); line-height: 1.65; margin: 0; } .cta-btn { display: inline-flex; align-items: center; gap: 0.55rem; background: var(--ink); color: var(--bg); font-weight: 600; font-size: 0.95rem; letter-spacing: 0.03em; padding: 0.9rem 1.7rem; border-radius: 999px; border: 0; cursor: pointer; transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease; } .cta-btn:hover { background: var(--accent); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(30, 78, 111, 0.22); } .cta-btn:active { transform: translateY(0); } .cta-btn svg { width: 1rem; height: 1rem; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; } .cta-btn:disabled { opacity: 0.6; cursor: wait; transform: none; } /* ---------- The poster ---------- */ .panel--poster { background: var(--bg); } .poster-inner { display: flex; flex-direction: column; } /* Thin accent keyline at the very top — the poster's signature */ .keyline { height: 4px; background: linear-gradient(90deg, var(--accent), var(--accent-deep)); border-radius: 2px; margin-bottom: 1.4rem; } /* Poster masthead + colophon (mono dateline furniture) */ .masthead { display: flex; justify-content: space-between; gap: 1rem; font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--line); padding-bottom: 0.7rem; margin: 0 0 clamp(1.6rem, 5vh, 2.6rem); } .colophon { display: flex; justify-content: space-between; gap: 1rem; font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); border-top: 1px solid var(--line); padding-top: 0.7rem; margin: clamp(1.6rem, 5vh, 2.6rem) 0 0; } .poster-head { text-align: center; max-width: 680px; margin: 0 auto clamp(1.8rem, 5vw, 2.8rem); } /* Optional cover banner — the event's own official flyer/banner image. Sits at the very top of the poster (the cover). Delete the
block (or add hidden) to hide it. It is a real