@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500&family=Dancing+Script:wght@600;700&display=swap');
:root{color-scheme:dark;--blue:#ff33a1}*{box-sizing:border-box}body{margin:0;background:#0b0207;color:#ffd9ee;font-family:'Be Vietnam Pro',sans-serif;overflow:hidden}button,input{font:inherit}button{cursor:pointer;-webkit-tap-highlight-color:transparent}button:focus-visible,input:focus-visible{outline:2px solid #ffb2dc;outline-offset:5px}#film{position:fixed;inset:0;width:100%;height:100%;display:block}.atmosphere{position:fixed;inset:-20%;pointer-events:none;background:radial-gradient(ellipse at 24% 45%,#7c064652,transparent 33%),radial-gradient(ellipse at 73% 62%,#7c2c6a40,transparent 35%),radial-gradient(ellipse at 50% 78%,#6e003b38,transparent 30%);transform:translate(var(--drift,0),0) scale(var(--breath,1));opacity:var(--atmosphere,.8)}.vignette{position:fixed;inset:0;pointer-events:none;background:radial-gradient(ellipse,transparent 40%,#0009);z-index:2}.film-grain{position:fixed;inset:0;pointer-events:none;opacity:.035;z-index:2;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' opacity='.5' filter='url(%23n)'/%3E%3C/svg%3E")}.topline{position:fixed;inset:22px 27px auto;z-index:8;display:flex;justify-content:space-between;align-items:center;font-size:9px;letter-spacing:2px;color:#e3a3c69e}.top-controls{display:flex;gap:8px}.icon-button{border:1px solid #ffa5d630;background:#1e031288;border-radius:50%;width:35px;height:35px;color:#ffc6e5;font-size:14px;backdrop-filter:blur(10px)}.icon-button:hover{background:#ff33a133}.start-screen{position:fixed;inset:0;z-index:5;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;text-align:center;padding:0 22px max(13vh,80px);background:linear-gradient(transparent 55%,#0b020777);transition:opacity .8s,visibility .8s}.start-screen.hide{opacity:0;visibility:hidden;pointer-events:none}.start-screen h1{font-family:'Dancing Script',cursive;font-weight:600;font-size:clamp(30px,5vw,43px);margin:0 0 12px;text-shadow:0 0 25px #ff33a188}.start-screen p{font-size:11px;color:#cd9bb6;letter-spacing:1px;margin:0 0 24px}.start-button{border:1px solid #ff77c080;border-radius:30px;color:#ffd9ee;background:linear-gradient(120deg,#880e50b8,#5a1038c4);padding:15px 30px;font-size:12px;letter-spacing:1px;box-shadow:0 0 35px #ff33a127}.start-button:hover{box-shadow:0 0 50px #ff33a155;background:#82114e}.scene-caption{position:fixed;bottom:96px;width:100%;text-align:center;z-index:4;color:#ffc4e4;font-family:'Dancing Script',cursive;font-size:clamp(21px,3vw,29px);text-shadow:0 0 20px #ff33a180;pointer-events:none;transition:opacity .6s;opacity:0}.scene-caption.visible{opacity:.85}.player{position:fixed;z-index:10;bottom:max(16px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);width:min(550px,calc(100% - 35px));display:flex;align-items:center;gap:13px;background:#1d0411b8;border:1px solid #ff74bf24;border-radius:35px;padding:11px 17px;backdrop-filter:blur(18px);transition:opacity .6s}.player[hidden]{display:none}.player button{background:none;border:0;color:#fac0df;font-size:14px;padding:3px}.player input{width:100%;height:3px;accent-color:#ff33a1;cursor:pointer}.player time{font-size:9px;color:#c78fad;white-space:nowrap;font-variant-numeric:tabular-nums;letter-spacing:.3px}.cinema-envelope{position:fixed;z-index:5;left:50%;top:50%;width:160px;height:110px;transform:translate(-50%,-50%);opacity:0;pointer-events:none;filter:drop-shadow(0 0 55px #ff33a166);perspective:700px}.envelope-back{position:absolute;inset:0;border-radius:6px;background:linear-gradient(135deg,#ff4dad,#980c58)}.envelope-paper{position:absolute;left:8%;top:7%;width:84%;height:90%;border-radius:5px;background:linear-gradient(#fff1f9,#ffc4e4);transform:translateY(calc(var(--opening,0)*-80px));box-shadow:0 0 15px #3a001f33}.envelope-paper:before{content:'Gửi em yêu ♡';display:block;margin-top:18px;font:20px 'Dancing Script',cursive;text-align:center;color:#8d215b}.envelope-front{position:absolute;inset:0;background:linear-gradient(140deg,#f74aa7,#a91866);clip-path:polygon(0 0,50% 55%,100% 0,100% 100%,0 100%);border-radius:6px}.envelope-flap{position:absolute;inset:0;background:linear-gradient(#ff92cd,#e43593);clip-path:polygon(0 0,100% 0,50% 60%);transform-origin:top;transform:rotateX(calc(var(--opening,0)*180deg));backface-visibility:hidden}.envelope-seal{position:absolute;left:44%;top:44%;font-size:25px;color:#ffe0f1;opacity:calc(1 - var(--opening,0))}.film-letter{position:fixed;left:50%;top:50%;z-index:6;width:min(360px,calc(100% - 48px));max-height:calc(100svh - 130px);overflow:auto;background:linear-gradient(145deg,#ffeff8,#fac6e2);color:#651540;border:1px solid #ffb5dd;border-radius:10px;padding:30px 29px;box-shadow:0 0 100px #ff33a140;opacity:0;pointer-events:none;transform:translate(-50%,-50%) scale(.9)}.film-letter .date{font-size:9px;letter-spacing:3px;text-align:center;color:#a34c7b}.film-letter h2{font:600 30px 'Dancing Script',cursive;text-align:center;margin:13px 0 20px}.film-letter .handwriting{font:600 24px/1.6 'Dancing Script',cursive;min-height:270px;margin:0}.film-letter .signature{font:600 26px 'Dancing Script',cursive;text-align:right;margin:15px 0 0}.film-letter .clip{position:absolute;right:33px;top:-10px;font-size:24px;color:#d32985;transform:rotate(22deg)}.end-screen{position:fixed;inset:auto 0 125px;z-index:7;text-align:center;opacity:0;visibility:hidden;transition:opacity 1s}.end-screen.show{opacity:1;visibility:visible}.end-screen p{font-family:'Dancing Script',cursive;font-size:25px;color:#ffd6ec}.end-screen button{border:1px solid #ff7bc288;background:#51052eb8;color:#ffd1ea;padding:12px 25px;border-radius:30px;font-size:11px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.sample-note{position:fixed;left:20px;bottom:24px;z-index:4;font-size:8px;color:#aa7893;letter-spacing:1px;pointer-events:none;opacity:0}.sample-note.visible{opacity:.8}body.photo-inspection .player{opacity:0}#photo-viewer{border:1px solid #ff8dcb;border-radius:10px;background:#ffe8f4;padding:12px;max-width:min(440px,88vw);box-shadow:0 0 80px #ff33a155}#photo-viewer::backdrop{background:#000b;backdrop-filter:blur(8px)}#photo-viewer img{display:block;max-width:100%;max-height:74svh;border-radius:5px}#photo-viewer button{position:absolute;right:15px;top:15px;border:0;background:#fff4fadd;color:#7d2354;border-radius:50%;width:30px;height:30px;font-size:21px}#photo-viewer p{font-size:10px;text-align:center;color:#8d3665;margin:10px 0 0}.reduced-note{display:none}.reduced-note.show{display:block;font-size:10px;color:#d2a2bc;margin-top:15px}@media(max-width:600px){.topline{inset:16px 16px auto;font-size:8px;letter-spacing:1.6px}.icon-button{width:32px;height:32px}.start-screen{padding-bottom:16vh}.player{gap:9px;padding:10px 13px}.player time{font-size:8px}.sample-note{bottom:76px;left:18px;font-size:7px}.scene-caption{bottom:92px;font-size:23px}.film-letter{padding:25px 25px}.film-letter h2{font-size:28px;margin:10px 0 15px}.film-letter .handwriting{font-size:22px;line-height:1.6;min-height:255px}.film-letter .signature{font-size:24px}}@media(max-height:620px){.film-letter{padding:18px 25px;width:min(480px,80vw);max-height:calc(100svh - 100px)}.film-letter .handwriting{font-size:20px;line-height:1.45;min-height:120px}.film-letter h2{margin:7px 0}.film-letter .signature{margin:6px 0}.scene-caption{bottom:82px}.start-screen{padding-bottom:70px}.start-screen h1{font-size:28px}.start-screen p{margin-bottom:14px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}.start-screen,.player,.scene-caption,.end-screen{transition:none}}


.audio-unlock{position:fixed;z-index:20;right:20px;top:75px;border:1px solid #ff99c8;background:#4b1538e8;color:#ffe5f2;padding:12px 18px;border-radius:25px;font-size:12px;box-shadow:0 0 25px #ff53a733}.audio-unlock[hidden]{display:none}