/* ============================================================================ TheWChat — Brand Theme (single source of truth) ---------------------------------------------------------------------------- ALL brand color, gradient, radius, shadow and motion values live here as CSS custom properties. Change a value ONCE here and it propagates across the entire site (public + auth). No component hardcodes a hex value. Tailwind (loaded via CDN in the shared partial) is configured to READ these variables, so utilities like `bg-brand-500` / `text-brand-600` resolve to the tokens below — no duplication between CSS and Tailwind config. The channel triplets (`--brand-500` = "37 99 235") are stored WITHOUT the rgb() wrapper on purpose: that lets Tailwind compose them with opacity, e.g. `bg-brand-500/20`. Use `rgb(var(--brand-500))` when writing plain CSS here. ============================================================================ */ :root { /* ── Brand scale (R G B channels, space-separated) ────────────────────── To re-brand the whole site, edit ONLY this scale. Everything derives from it. Tuned to the TheWChat logo hue (500 = #2747f0, the exact blue of the "W" chat-bubble mark in static/img/wchat_favicon.png). */ --brand-50: 240 242 254; --brand-100: 220 226 253; --brand-200: 182 192 250; --brand-300: 138 156 247; --brand-400: 91 115 244; --brand-500: 39 71 240; /* logo blue — the "W" mark */ --brand-600: 37 66 220; /* primary — buttons, links, focus */ --brand-700: 34 59 192; --brand-800: 31 51 160; --brand-900: 29 44 130; /* ── Ink / surface neutrals (slate) ─────────────────────────────────── */ --ink-950: 2 6 23; /* deepest — dark hero, footer */ --ink-900: 15 23 42; --ink-800: 30 41 59; --ink-700: 51 65 85; --ink-600: 71 85 105; --ink-500: 100 116 139; --ink-400: 148 163 184; --ink-300: 203 213 225; --ink-200: 226 232 240; --ink-100: 241 245 249; --ink-50: 248 250 252; /* ── Semantic accents (kept small + intentional) ────────────────────── */ --accent: 139 92 246; /* violet — pairs with brand in gradients */ --success: 34 197 94; --warning: 245 158 11; --danger: 239 68 68; /* ── Composed tokens (derive from the scale above) ──────────────────── */ --brand-gradient: linear-gradient(135deg, rgb(var(--brand-600)) 0%, rgb(var(--accent)) 100%); --hero-gradient: linear-gradient(160deg, rgb(var(--ink-950)) 0%, rgb(var(--ink-900)) 45%, rgb(var(--ink-950)) 100%); --brand-ring: 0 0 0 4px rgb(var(--brand-500) / 0.30); /* ── Shape & elevation ──────────────────────────────────────────────── */ --radius-sm: 0.5rem; --radius: 0.75rem; --radius-lg: 1rem; --radius-xl: 1.5rem; --shadow-card: 0 1px 3px rgb(var(--ink-900) / 0.06), 0 10px 30px -12px rgb(var(--ink-900) / 0.10); --shadow-lift: 0 20px 45px -18px rgb(var(--ink-900) / 0.22); --shadow-brand: 0 14px 34px -12px rgb(var(--brand-600) / 0.45); /* ── Motion ─────────────────────────────────────────────────────────── */ --ease: cubic-bezier(0.22, 1, 0.36, 1); --dur: 0.35s; } /* ============================================================================ Base element defaults — set once, no per-page overrides needed. ============================================================================ */ html { scroll-behavior: smooth; } /* Kill stray horizontal overflow from decorative bleeds (device spreads, arcs) — `clip` keeps position:sticky working, unlike `hidden`. */ html, body { overflow-x: clip; } body { font-family: 'Inter', system-ui, -apple-system, sans-serif; } [x-cloak] { display: none !important; } /* Alpine flash guard — only allowed !important */ ::selection { background: rgb(var(--brand-600) / 0.18); } /* Consistent focus ring for interactive elements (accessibility). */ a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: none; box-shadow: var(--brand-ring); border-radius: var(--radius-sm); } /* ============================================================================ Reusable brand components — semantic classes, NOT utility soup. These compose the tokens above so templates stay clean and any restyle happens in one place. Prefixed `tw-` to avoid ANY collision with Tailwind utility class names (no override wars). ============================================================================ */ /* Surfaces --------------------------------------------------------------- */ .tw-gradient-brand { background: var(--brand-gradient); } .tw-gradient-hero { background: var(--hero-gradient); } /* Light hero — clean white top with soft brand washes pooling in the lower corners (reference-style). Uses the brand hue so it re-tints with the theme. */ .tw-gradient-hero-light { background: radial-gradient(45% 60% at 2% 78%, rgb(var(--accent) / 0.22), transparent 70%), radial-gradient(45% 60% at 98% 78%, rgb(var(--brand-400) / 0.24), transparent 70%), radial-gradient(85% 50% at 50% 115%, rgb(var(--brand-200) / 0.50), transparent 75%), linear-gradient(180deg, #ffffff 0%, #ffffff 28%, rgb(var(--brand-50)) 72%, rgb(var(--brand-100) / 0.8) 100%); } .tw-glass { background: rgb(255 255 255 / 0.05); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid rgb(255 255 255 / 0.10); } /* Faint dotted grid used behind dark sections. */ .tw-grid-dots { background-image: radial-gradient(rgb(var(--brand-400) / 0.14) 1px, transparent 1px); background-size: 26px 26px; } /* Buttons — ONE system for the whole site. ------------------------------ Two variants with "pushable" 3D press physics (adapted from the layered front/edge/shadow technique into a single-element box-shadow version so no extra markup is needed): .tw-btn-primary — brand gradient face on a darker edge .tw-btn-light — white face + brand border, for dark areas / CTA pairs Legacy aliases .tw-btn-ghost / .tw-btn-outline map to the light variant. */ .tw-btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; font-weight: 600; line-height: 1; border-radius: 0.5rem; padding: 0.875rem 1.5rem; cursor: pointer; white-space: nowrap; will-change: transform; transition: transform 600ms cubic-bezier(0.3, 0.7, 0.4, 1), box-shadow 600ms cubic-bezier(0.3, 0.7, 0.4, 1), filter 250ms ease; -webkit-tap-highlight-color: transparent; } .tw-btn-sm { padding: 0.625rem 1.125rem; font-size: 0.875rem; } .tw-btn-primary { background: var(--brand-gradient); color: #fff; box-shadow: 0 4px 0 rgb(var(--brand-800)), 0 8px 16px -4px rgb(var(--brand-900) / 0.45); } .tw-btn-primary:hover { filter: brightness(108%); transform: translateY(-2px); box-shadow: 0 6px 0 rgb(var(--brand-800)), 0 12px 20px -4px rgb(var(--brand-900) / 0.45); transition-duration: 250ms; transition-timing-function: cubic-bezier(0.3, 0.7, 0.4, 1.5); } .tw-btn-primary:active { transform: translateY(2px); box-shadow: 0 1px 0 rgb(var(--brand-800)), 0 3px 6px -2px rgb(var(--brand-900) / 0.45); transition-duration: 34ms; } .tw-btn-light, .tw-btn-ghost, .tw-btn-outline { background: #fff; color: rgb(var(--brand-700)); border: 1px solid rgb(var(--brand-300)); box-shadow: 0 4px 0 rgb(var(--brand-300)), 0 8px 16px -5px rgb(var(--brand-900) / 0.30); } .tw-btn-light:hover, .tw-btn-ghost:hover, .tw-btn-outline:hover { transform: translateY(-2px); background: rgb(var(--brand-50)); box-shadow: 0 6px 0 rgb(var(--brand-300)), 0 12px 20px -5px rgb(var(--brand-900) / 0.30); transition-duration: 250ms; transition-timing-function: cubic-bezier(0.3, 0.7, 0.4, 1.5); } .tw-btn-light:active, .tw-btn-ghost:active, .tw-btn-outline:active { transform: translateY(2px); box-shadow: 0 1px 0 rgb(var(--brand-300)), 0 3px 6px -3px rgb(var(--brand-900) / 0.30); transition-duration: 34ms; } /* Dark variant (store badges, dark CTAs) — same press physics, black edge. */ .tw-btn-dark { background: rgb(var(--ink-950)); color: #fff; will-change: transform; box-shadow: 0 4px 0 #000, 0 8px 16px -4px rgb(var(--ink-900) / 0.5); transition: transform 600ms cubic-bezier(0.3, 0.7, 0.4, 1), box-shadow 600ms cubic-bezier(0.3, 0.7, 0.4, 1), background-color 250ms ease; } .tw-btn-dark:hover { transform: translateY(-2px); background: rgb(var(--ink-800)); box-shadow: 0 6px 0 #000, 0 12px 20px -4px rgb(var(--ink-900) / 0.5); transition-duration: 250ms; transition-timing-function: cubic-bezier(0.3, 0.7, 0.4, 1.5); } .tw-btn-dark:active { transform: translateY(2px); box-shadow: 0 1px 0 #000, 0 3px 6px -2px rgb(var(--ink-900) / 0.5); transition-duration: 34ms; } @media (prefers-reduced-motion: reduce) { .tw-btn, .tw-btn:hover, .tw-btn:active { transform: none; transition: none; } } /* Universal 3D edge for small controls, avatars & chips — same depth language as the buttons. .tw-3d works on any fill (translucent dark edge reads as a deeper shade of the element's own color); .tw-3d-brand gives solid-brand elements their proper brand-800 edge. */ .tw-3d { box-shadow: 0 2px 0 rgb(var(--ink-900) / 0.18), 0 4px 6px -2px rgb(var(--ink-900) / 0.18); } .tw-3d-brand { box-shadow: 0 2px 0 rgb(var(--brand-800)), 0 5px 8px -2px rgb(var(--brand-900) / 0.45); } /* Opaque icon tile for dark timeline lists — visually identical to a brand-500/15 tint on ink-900, but SOLID so the connector line behind it can't show through the icon. */ .tw-tile-dark { background: color-mix(in srgb, rgb(var(--brand-500)) 16%, rgb(var(--ink-900))); } .group\/pt:hover .tw-tile-dark { background: color-mix(in srgb, rgb(var(--brand-500)) 32%, rgb(var(--ink-900))); } /* Shine sweep for primary CTAs (opt-in via .tw-shine). */ .tw-shine { position: relative; overflow: hidden; } .tw-shine::before { content: ''; position: absolute; inset: 0 auto 0 -75%; width: 50%; background: linear-gradient(120deg, transparent, rgb(255 255 255 / 0.35), transparent); transform: skewX(-25deg); transition: left 0.7s var(--ease); pointer-events: none; } .tw-shine:hover::before { left: 125%; } /* Cards ------------------------------------------------------------------ */ .tw-card { background: #fff; border: 1px solid rgb(var(--ink-200)); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); } .tw-lift { transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease); } .tw-lift:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); } /* Eyebrow + heading accent ---------------------------------------------- */ .tw-eyebrow { display: block; color: rgb(var(--brand-600)); font-weight: 600; font-size: 0.8125rem; text-transform: uppercase; letter-spacing: 0.14em; } .tw-underline { position: relative; display: inline-block; } .tw-underline::after { content: ''; position: absolute; left: 50%; bottom: -0.65rem; width: 2.25rem; height: 3px; border-radius: 999px; background: var(--brand-gradient); transform: translateX(-50%); } /* Text gradient (for the highlighted word in headings). */ .tw-text-gradient { background: linear-gradient(90deg, rgb(var(--brand-400)), rgb(var(--accent))); -webkit-background-clip: text; background-clip: text; color: transparent; } /* Chrome: scroll progress, nav shadow, back-to-top --------------------- */ #scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0%; background: var(--brand-gradient); z-index: 100; transition: width 0.1s ease-out; pointer-events: none; } nav.tw-scrolled { box-shadow: 0 6px 24px -10px rgb(var(--ink-900) / 0.14); } #back-to-top { position: fixed; bottom: 1.75rem; left: 1.75rem; z-index: 90; width: 3rem; height: 3rem; border-radius: 999px; background: var(--brand-gradient); color: #fff; box-shadow: var(--shadow-brand); display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transform: translateY(8px); transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease); } #back-to-top.tw-visible { opacity: 1; visibility: visible; transform: translateY(0); } /* Smooth bottom fade for light-hero sections → next white section. Tall + eased stops so the blend has no visible band. */ .tw-fade-bottom { position: absolute; bottom: 0; left: 0; right: 0; height: 11rem; pointer-events: none; background: linear-gradient(180deg, transparent 0%, rgb(255 255 255 / 0.25) 30%, rgb(255 255 255 / 0.60) 55%, rgb(255 255 255 / 0.88) 78%, #ffffff 100%); } /* Marquee (industry trust band) — soft, wide edge fade; pauses on hover. */ .tw-marquee { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent); mask-image: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent); } .tw-marquee-track { display: flex; gap: 3.5rem; width: max-content; align-items: center; animation: tw-marquee 38s linear infinite; } .tw-marquee:hover .tw-marquee-track { animation-play-state: paused; } @keyframes tw-marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } } /* Feature hero panel — hemispheric orb glow behind the icon: bright core, soft dome rings radiating outward, base dissolving to white at the bottom. */ .tw-panel-glow { background: /* bright core right behind the icon */ radial-gradient(circle 90px at 50% 17%, rgb(255 255 255 / 0.45), transparent 100%), /* faint ring edge of the dome */ radial-gradient(circle 190px at 50% 17%, transparent 78%, rgb(255 255 255 / 0.22) 86%, transparent 96%), /* mid dome */ radial-gradient(circle 190px at 50% 17%, rgb(var(--accent) / 0.75) 0%, rgb(var(--accent) / 0.35) 60%, transparent 100%), /* outer hemisphere bloom */ radial-gradient(circle 320px at 50% 17%, rgb(var(--brand-400) / 0.9) 0%, transparent 100%), /* base wash → white at bottom */ linear-gradient(180deg, rgb(var(--brand-600)) 0%, rgb(var(--brand-500)) 50%, rgb(var(--brand-300)) 76%, rgb(var(--brand-100)) 90%, #ffffff 100%); } /* ── Bento hover demos (features section) ────────────────────────────── Elements inside a .group card that "come alive" on hover: reveals, typing dots, call rings, growing bars, ticks colorizing, toggles. */ .tw-reveal { opacity: 0; transform: translateY(6px) scale(0.97); transition: opacity 0.45s var(--ease), transform 0.45s var(--ease); } .group:hover .tw-reveal { opacity: 1; transform: none; } .tw-reveal-d1 { transition-delay: 0.08s; } .tw-reveal-d2 { transition-delay: 0.2s; } .tw-reveal-d3 { transition-delay: 0.34s; } @keyframes tw-typing { 0%,60%,100% { opacity:.25; transform:translateY(0); } 30% { opacity:1; transform:translateY(-2px); } } .tw-typing span { width:4px; height:4px; border-radius:999px; display:inline-block; } .group:hover .tw-typing span { animation: tw-typing 1s infinite; } .tw-typing span:nth-child(2) { animation-delay:.15s; } .tw-typing span:nth-child(3) { animation-delay:.3s; } @keyframes tw-ring { from { box-shadow:0 0 0 0 rgb(var(--brand-500)/.45); } to { box-shadow:0 0 0 16px transparent; } } .group:hover .tw-ring { animation: tw-ring 1.3s ease-out infinite; } @keyframes tw-grow { from { transform:scaleY(.25); } } .group:hover .tw-grow { transform-origin:bottom; animation: tw-grow .7s var(--ease) both; } .group:hover .tw-grow:nth-child(2) { animation-delay:.06s; } .group:hover .tw-grow:nth-child(3) { animation-delay:.12s; } .group:hover .tw-grow:nth-child(4) { animation-delay:.18s; } .group:hover .tw-grow:nth-child(5) { animation-delay:.24s; } .group:hover .tw-grow:nth-child(6) { animation-delay:.3s; } .group:hover .tw-grow:nth-child(7) { animation-delay:.36s; } .tw-tick { color: rgb(var(--ink-300)); transition: color .4s var(--ease); } .group:hover .tw-tick { color: rgb(var(--brand-500)); } .tw-online { background: rgb(var(--ink-300)); transition: background .4s var(--ease); } .group:hover .tw-online { background: rgb(var(--success)); } /* Toggle that flips ON when the card is hovered. */ .tw-demo-toggle { width:2rem; height:1.125rem; border-radius:999px; background: rgb(var(--ink-200)); position:relative; transition: background .35s var(--ease); box-shadow: 0 2px 0 rgb(var(--ink-900) / 0.12); } .tw-demo-toggle::after { content:''; position:absolute; top:2px; left:2px; width:.875rem; height:.875rem; border-radius:999px; background:#fff; box-shadow:0 1px 2px rgb(var(--ink-900)/.2); transition: transform .35s var(--ease); } .group:hover .tw-demo-toggle { background: rgb(var(--brand-500)); } .group:hover .tw-demo-toggle::after { transform: translateX(0.875rem); } @media (prefers-reduced-motion: reduce) { .group:hover .tw-typing span, .group:hover .tw-ring, .group:hover .tw-grow { animation: none; } } /* Device realism helpers (hero mockups). */ .tw-screen-glare { position: absolute; inset: 0; pointer-events: none; z-index: 5; background: linear-gradient(115deg, rgb(255 255 255 / 0.13) 0%, rgb(255 255 255 / 0.04) 26%, transparent 44%); } .tw-ground-shadow { position: absolute; left: 5%; right: 5%; bottom: -18px; height: 24px; background: radial-gradient(50% 100% at 50% 0%, rgb(var(--ink-900) / 0.30), transparent 75%); filter: blur(6px); border-radius: 50%; pointer-events: none; } .tw-float { animation: tw-float 6s ease-in-out infinite; } @keyframes tw-float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } } /* Respect reduced-motion. */ @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .tw-marquee-track, .tw-float { animation: none !important; } }