/* Envelope opening scene for the formal edition. Sequence (driven by .opening on , see envelope.js): seal lifts -> flap folds back -> letter rises -> scene fades to the page. Layer order inside .envelope, bottom to top: inside (liner) < flap once open < letter < pocket < flap while closed < seal */ .scene { display: none; } .sealed body, .opening body { overflow: hidden; } .sealed .scene, .opening .scene { position: fixed; inset: 0; z-index: 100; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 36px; padding: 24px 16px; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .45 0 0 0 0 .38 0 0 0 0 .25 0 0 0 .05 0'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E"), radial-gradient(ellipse at 50% 40%, var(--paper) 0%, var(--ivory) 55%, #ece5d5 100%); } /* The invitation underneath waits, then eases in as the scene fades. */ .sealed body > :not(.scene), .opening body > :not(.scene) { opacity: 0; transform: translateY(18px); } .scene__stage { /* Sized so the open flap (60% of the envelope's height above it) still fits once the stage slides down while opening. */ --w: min(86vw, 540px, calc((100svh - 80px) / 1.65 * 1.38)); position: relative; width: var(--w); transition: translate .9s cubic-bezier(.45, 0, .2, 1) .3s; animation: env-arrive 1.2s cubic-bezier(.2, .7, .2, 1) both; } @keyframes env-arrive { from { opacity: 0; transform: translateY(30px) rotate(-1.5deg); } to { opacity: 1; transform: none; } } .scene__hint { margin: 0; font-family: var(--sans); font-size: 11px; letter-spacing: .3em; text-transform: uppercase; color: var(--gold); animation: hint-pulse 2.8s ease-in-out 1.4s infinite both; } @keyframes hint-pulse { 0%, 100% { opacity: .45; } 50% { opacity: 1; } } /* ------------------------------------------------------------ envelope --- */ .envelope { position: relative; aspect-ratio: 7.25 / 5.25; /* Perspective here but no preserve-3d, so z-index still orders the layers. */ perspective: 1400px; cursor: pointer; } .envelope__shadow { position: absolute; left: 6%; right: 6%; bottom: -5%; height: 12%; background: radial-gradient(ellipse at center, rgba(29, 36, 54, .28), transparent 70%); filter: blur(6px); z-index: -1; } .envelope__inside { position: absolute; inset: 0; z-index: 1; background: url("assets/liner.svg") center / 64px repeat; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .2); } /* The card tucked inside: only its top shows once the flap is open. */ .envelope__letter { position: absolute; left: 5%; right: 5%; top: 5%; height: 90%; z-index: 3; display: flex; flex-direction: column; align-items: center; padding-top: 7%; text-align: center; background: var(--paper); box-shadow: 0 -2px 12px rgba(0, 0, 0, .18); transition: transform 1.5s cubic-bezier(.32, .72, .2, 1) 1.05s; } .envelope__letter::before { content: ""; position: absolute; inset: 3.5%; border: 1px solid var(--gold-light); } .envelope__letter p { margin: 0; } .envelope__letter-over { font-family: var(--sans); font-size: clamp(7px, 1.6vw, 10px); letter-spacing: .3em; text-transform: uppercase; color: var(--gold); } .envelope__letter-name { font-family: var(--serif); font-weight: 500; font-size: clamp(17px, 4.4vw, 31px); line-height: 1.12; max-width: 11ch; text-wrap: balance; color: var(--navy); } .envelope__letter-title { font-family: var(--serif); font-size: clamp(12px, 2.6vw, 18px); letter-spacing: .16em; text-transform: uppercase; color: var(--navy); } /* Front of the envelope: side folds with a V notch, then the bottom fold. */ .envelope__pocket { position: absolute; inset: 0; z-index: 4; pointer-events: none; } .envelope__sides, .envelope__bottom { position: absolute; inset: 0; } .envelope__sides { background: linear-gradient(90deg, #182030, #212a3f 50%, #182030); clip-path: polygon(0 0, 50% 54%, 100% 0, 100% 100%, 0 100%); } .envelope__bottom { background: linear-gradient(180deg, #273049, #1f2739); clip-path: polygon(0 100%, 50% 44%, 100% 100%); filter: drop-shadow(0 -1px 2px rgba(0, 0, 0, .35)); } /* Postage: a stamp in the corner with the postmark struck beside it. */ .envelope__postage { position: absolute; top: 6%; right: 5%; width: 17%; /* Above the flap: the stamp belongs to the face of the envelope, and our flap is drawn over the front, so it would otherwise be buried. */ z-index: 6; pointer-events: none; } .envelope__stamp { display: block; width: 100%; height: auto; transform: rotate(2.5deg); filter: drop-shadow(0 1px 2px rgba(0, 0, 0, .35)); } .envelope__postmark { position: absolute; right: 78%; top: 2%; width: 124%; height: auto; transform: rotate(-9deg); } .envelope__to { position: absolute; left: 0; right: 0; bottom: 12%; margin: 0; text-align: center; font-family: "Pinyon Script", "Snell Roundhand", cursive; font-size: clamp(24px, 6.4vw, 42px); line-height: 1; color: var(--gold-light); text-shadow: 0 1px 0 rgba(0, 0, 0, .3); } /* Top flap. clip-path would flatten 3D on the rotating element itself, so each face carries its own clipped child. */ .envelope__flap { position: absolute; left: 0; right: 0; top: 0; height: 60%; z-index: 5; transform-origin: 50% 0; transform-style: preserve-3d; transition: transform .9s cubic-bezier(.5, 0, .25, 1) .35s, z-index 0s linear .8s; } .envelope__flap-face { position: absolute; inset: 0; backface-visibility: hidden; } .envelope__flap-face > div { position: absolute; inset: 0; clip-path: polygon(0 0, 100% 0, 50% 100%); } .envelope__flap-face--front { filter: drop-shadow(0 2px 3px rgba(0, 0, 0, .4)); } .envelope__flap-face--front > div { background: linear-gradient(180deg, #1c2335, #2a3350); } .envelope__flap-face--back { transform: rotateX(180deg); } .envelope__flap-face--back > div { background: url("assets/liner.svg") center top / 64px repeat; } /* ---------------------------------------------------------------- seal --- */ .seal { position: absolute; left: 50%; top: 60%; z-index: 6; width: 23%; aspect-ratio: 1; padding: 0; border: 0; border-radius: 50%; background: none; cursor: pointer; transform: translate(-50%, -50%); filter: drop-shadow(0 3px 4px rgba(0, 0, 0, .35)); transition: transform .45s cubic-bezier(.3, 0, .2, 1), opacity .4s ease .1s; } .seal svg { display: block; width: 100%; height: 100%; } .seal:hover { transform: translate(-50%, -50%) scale(1.05); } .seal:focus-visible { outline: 2px solid var(--gold); outline-offset: 6px; } /* --------------------------------------------------------------- open --- */ .opening .seal { opacity: 0; transform: translate(-50%, -80%) scale(1.15); } .opening .scene__stage { translate: 0 calc(var(--w) / 1.38 * .42); } .opening .envelope__flap { transform: rotateX(180deg); z-index: 2; } .opening .envelope__letter { transform: translateY(-86%) scale(1.04); } .opening .scene__hint { animation: none; opacity: 0; transition: opacity .3s; } .opening .scene { opacity: 0; visibility: hidden; transition: opacity .9s ease 3.3s, visibility 0s linear 4.2s; } /* Starts as the scene finishes fading, so the two never double-expose. */ .opening body > :not(.scene) { opacity: 1; transform: none; transition: opacity .9s ease 4s, transform .9s ease 4s; } .opening body { overflow: auto; } /* envelope.js moves focus here after opening; it isn't interactive. */ .invite__name:focus { outline: none; }