:root{color:#1d1b22;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#e3e8f5;font-family:SF Pro Text,Inter,Avenir Next,system-ui,sans-serif;font-weight:500;line-height:1.35}body{background:radial-gradient(circle at top,#f8fbff 0%,#dde5f8 55%,#cfd9ef 100%);place-items:center;min-height:100dvh;margin:0;display:grid}button,textarea,select{font-family:inherit}*{box-sizing:border-box}body{background-color:#0f1117;justify-content:center;align-items:center;height:100dvh;margin:0;padding:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex;overflow:hidden}#root{justify-content:center;width:100%;height:100%;display:flex}.app-shell{color:#1d1b22;background:linear-gradient(170deg,#eef5ff,#f8f9ff 45%,#fff);border-inline:2px solid #171717;flex-direction:column;width:100%;max-width:430px;height:100dvh;margin:0 auto;display:flex;position:relative;overflow:hidden;box-shadow:0 0 0 2px #fff,0 22px 44px #0c14282e}.loading-shell{place-items:center;display:grid}.loader-card{text-align:center;padding:40px 24px}.loader-card .heart-icon{margin-bottom:12px;font-size:3rem;animation:1.2s ease-in-out infinite pulse;display:block}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.15)}}.card{background:#fff;border:2px solid #191919;border-radius:24px;box-shadow:6px 6px #171717}.top-header{z-index:10;background:#fff;border-bottom:2px solid #171717;flex-shrink:0;justify-content:space-between;align-items:center;height:52px;padding:8px 16px;display:flex}.brand{align-items:center;gap:6px;font-size:1.2rem;font-weight:900;display:flex}.brand-logo{font-size:1.3rem}.header-actions{align-items:center;gap:10px;display:flex}.user-badge{background:#ffe7c7;border:2px solid #171717;border-radius:12px;padding:3px 10px;font-size:.78rem;font-weight:700;box-shadow:2px 2px #171717}.logout-btn{cursor:pointer;background:#fff0f0;border:2px solid #171717;border-radius:12px;padding:4px 10px;font-size:.75rem;font-weight:700;box-shadow:2px 2px #171717}.logout-btn:active{transform:translate(2px,2px);box-shadow:0 0 #171717}.profile-picker{border-radius:0;flex-direction:column;justify-content:center;gap:14px;height:100%;padding:36px 24px;display:flex}.login-header{text-align:center}.logo-emoji{margin-bottom:8px;font-size:3rem;display:block}.eyebrow{letter-spacing:.14em;text-transform:uppercase;opacity:.64;margin:0;font-size:.76rem}.profile-picker h1{margin:6px 0 0;font-size:1.6rem}.profile-actions{grid-template-columns:1fr 1fr;gap:12px;margin-top:8px;display:grid}.profile-actions button,.bottom-nav button,.picker-row button,.send,.letter-card,.add-photo,.emoji-row button,.close{color:inherit;font:inherit;cursor:pointer;background:#fff;border:2px solid #131313;border-radius:16px}.profile-actions button{padding:14px;font-weight:700;box-shadow:4px 4px #181818}.profile-actions button.selected{background:#ffdeeb;border-color:#171717;box-shadow:4px 4px #171717}.login-form{flex-direction:column;gap:14px;margin-top:12px;display:flex}.input-group{flex-direction:column;gap:6px;display:flex}.input-group label{font-size:.84rem;font-weight:700}.input-group input{font:inherit;border:2px solid #171717;border-radius:14px;outline:none;padding:12px;box-shadow:3px 3px #171717}.error-banner{color:#a80000;background:#ffdede;border:2px solid #e12d2d;border-radius:12px;margin:0;padding:10px;font-size:.85rem;font-weight:600}.login-submit-btn{color:#fff;cursor:pointer;background:#171717;border:2px solid #171717;border-radius:16px;margin-top:8px;padding:14px;font-size:1rem;font-weight:800;box-shadow:4px 4px #ff9db8}.login-submit-btn:active{transform:translate(2px,2px);box-shadow:2px 2px #ff9db8}.tab-content{flex-direction:column;flex:1;margin-bottom:64px;padding:16px 22px 16px 16px;display:flex;overflow:hidden auto}.home-screen{flex-direction:column;flex:1;gap:16px;display:flex}.home-subhead{justify-content:space-between;align-items:center;display:flex}.section-title{font-size:1.1rem;font-weight:800}.add-photo{border-radius:14px;width:44px;height:44px;font-size:1.45rem;font-weight:900;box-shadow:3px 3px #171717}.add-photo:active{transform:translate(2px,2px);box-shadow:1px 1px #171717}.stack-wrap{flex:1;place-items:center;min-height:0;display:grid;position:relative}.stack-card{background:#fff;border:2px solid #171717;border-radius:28px;flex-direction:column;width:100%;height:100%;display:flex;position:absolute;overflow:hidden;box-shadow:8px 8px #191919}.stack-img{object-fit:cover;width:100%;height:100%;display:block}.stack-img-blur{object-fit:cover;filter:blur(4px);opacity:.6;width:100%;height:100%}.stack-card-overlay{inset-inline:0;color:#fff;background:linear-gradient(#0000 0%,#0006 35%,#000000d9 100%);flex-direction:column;gap:4px;padding:12px;display:flex;position:absolute;bottom:0}.stack-author-tag{justify-content:space-between;align-items:center;font-size:.88rem;font-weight:700;display:flex}.stack-author-tag small{opacity:.8;font-size:.74rem;font-weight:400}.stack-caption{text-shadow:0 1px 2px #00000080;margin:0;font-size:.9rem;font-weight:500}.stack-card.under{background:#f2f4ff;box-shadow:4px 4px #171717}.stack-card.active.peel{opacity:0;transition:all .22s ease-out;transform:translate(100px)rotate(12deg)scale(.95)}.tap-zones{z-index:8;grid-template-columns:1fr 1fr;width:100%;height:100%;display:grid;position:absolute;inset:0}.tap-zones button{opacity:0;border:none;border-radius:0}.empty-stack{text-align:center;place-content:center;gap:8px;width:100%;height:100%;padding:20px;display:grid;box-shadow:7px 7px #171717}.empty-stack h2{margin:0;font-size:1.3rem}.empty-stack p{opacity:.7;margin:0}.react-reply-box{background:#fff;border:2px solid #171717;border-radius:20px;flex-direction:column;gap:8px;padding:10px;display:flex;box-shadow:4px 4px #171717}.emoji-row{justify-content:space-between;gap:6px;display:flex}.emoji-btn{border-radius:12px;flex:1;justify-content:center;align-items:center;gap:4px;padding:8px 4px;font-size:1.1rem;display:flex;box-shadow:2px 2px #171717}.emoji-btn:active{transform:translate(1px,1px);box-shadow:1px 1px #171717}.emoji-count{color:#fff;background:#171717;border-radius:8px;padding:1px 5px;font-size:.72rem;font-weight:800}.toggle-comments-btn{border-radius:12px;padding:8px 10px;font-size:.8rem;font-weight:700;box-shadow:2px 2px #171717}.comments-drawer{background:#f8f9ff;border:2px solid #171717;border-radius:12px;flex-direction:column;gap:6px;max-height:120px;padding:8px;display:flex;overflow-y:auto}.comment-item{font-size:.84rem;line-height:1.3}.no-comments{opacity:.6;text-align:center;margin:0;font-size:.8rem}.comment-form{gap:6px;display:flex}.comment-form input{font:inherit;border:2px solid #171717;border-radius:12px;outline:none;flex:1;padding:8px 12px;font-size:.86rem}.comment-form button{color:#fff;cursor:pointer;background:#171717;border:2px solid #171717;border-radius:12px;padding:8px 14px;font-weight:700;box-shadow:2px 2px #ff9db8}.library-screen{flex-direction:column;flex:1;gap:14px;display:flex}.library-header-controls{background:#fff;border:2px solid #171717;border-radius:18px;padding:10px 14px;box-shadow:4px 4px #171717}.filter-label{justify-content:space-between;align-items:center;display:flex}.filter-label span{text-transform:uppercase;letter-spacing:.08em;font-size:.88rem;font-weight:800}.filter-label select{cursor:pointer;background:#fff0f5;border:2px solid #171717;border-radius:12px;outline:none;padding:6px 12px;font-weight:700;box-shadow:2px 2px #171717}.library-group{flex-direction:column;gap:9px;display:flex}.library-group h2{margin:0;font-size:1rem;font-weight:800}.library-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.library-item{aspect-ratio:1;cursor:pointer;background:#fff;border:2px solid #171717;border-radius:20px;position:relative;overflow:hidden;box-shadow:4px 4px #171717}.library-item:active{transform:translate(2px,2px);box-shadow:2px 2px #171717}.library-thumb{object-fit:cover;width:100%;height:100%;display:block}.author-overlay-badge{color:#fff;background:#000000b3;border-radius:8px;padding:2px 6px;font-size:.65rem;font-weight:700;position:absolute;bottom:4px;left:4px}.badge{background:#fff;border:2px solid #171717;border-radius:999px;padding:3px 6px;font-size:.68rem;font-weight:800;position:absolute;top:5px;right:5px}.empty-library{text-align:center;padding:24px;font-weight:600}.write-screen{flex-direction:column;flex:1;display:flex;position:relative;overflow:hidden}.hearts{pointer-events:none;opacity:.38;position:absolute;inset:0}.hearts span{animation:8s linear infinite floatHeart;position:absolute;bottom:-26px}@keyframes floatHeart{0%{opacity:0;transform:translateY(0)scale(.7)}25%{opacity:1}to{opacity:0;transform:translateY(-440px)scale(1.1)}}.letter-studio{z-index:2;background:#fff;border:2px solid #171717;border-radius:22px;flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;position:relative;box-shadow:6px 6px #171717}.studio-heading{text-transform:uppercase;letter-spacing:.12em;opacity:.7;margin:4px 0 0;font-size:.72rem;font-weight:800}.picker-row{gap:8px;padding-bottom:4px;display:flex;overflow-x:auto}.picker-row button{white-space:nowrap;border-radius:12px;padding:6px 12px;font-size:.82rem;font-weight:700;box-shadow:2px 2px #171717}.picker-row button.selected{color:#fff;background:#1e1e1e}.picker-row.inks button{border-bottom:4px solid var(--ink)}.letter-studio textarea{min-height:160px;font:inherit;resize:none;background:#ffffffd9;border:2px solid #171717;border-radius:14px;outline:none;flex:1;margin-top:4px;padding:12px;font-size:.95rem;line-height:1.5;box-shadow:3px 3px #171717}.send{color:#fff;opacity:.4;background:#171717;border-radius:14px;align-self:flex-end;padding:10px 20px;font-size:.95rem;font-weight:800;transition:opacity .25s;box-shadow:3px 3px #ff9db8}.send.ready{opacity:1}.archive-screen{flex-direction:column;flex:1;gap:12px;display:flex}.box-filter-tabs{gap:8px;display:flex}.box-filter-tabs button{cursor:pointer;background:#fff;border:2px solid #171717;border-radius:12px;flex:1;padding:8px;font-size:.8rem;font-weight:800;box-shadow:2px 2px #171717}.box-filter-tabs button.active{color:#fff;background:#171717}.letter-card{text-align:left;border-radius:18px;justify-content:space-between;align-items:center;width:100%;min-height:84px;padding:16px;display:flex;position:relative;box-shadow:4px 4px #171717}.letter-card.unread{background:#fff8e7;border-color:#171717}.letter-card p{opacity:.65;margin:0;font-size:.74rem;font-weight:700}.letter-card h3{margin:4px 0 2px;font-size:.95rem;font-weight:800}.letter-card span{opacity:.75;margin:0;font-size:.84rem}.stamp-badge-wrap{align-items:center;gap:6px;display:flex;position:relative}.stamp-badge-wrap strong{font-size:1.8rem}.unread-dot{background:#ff4757;border:2px solid #171717;border-radius:50%;width:10px;height:10px;position:absolute;top:-4px;right:-4px}.empty-letters{text-align:center;padding:24px;font-weight:600}.modal-backdrop{z-index:50;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#000000a6;place-items:center;padding:16px;animation:.2s fadeIn;display:grid;position:absolute;inset:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-card{flex-direction:column;gap:12px;width:100%;max-width:380px;max-height:90dvh;padding:18px;display:flex;overflow-y:auto}.modal-header{justify-content:space-between;align-items:center;display:flex}.modal-header h2{margin:0;font-size:1.2rem;font-weight:900}.close-btn{cursor:pointer;background:#fff;border:2px solid #171717;border-radius:12px;width:32px;height:32px;font-weight:900;box-shadow:2px 2px #171717}.upload-form{flex-direction:column;gap:12px;display:flex}.file-input-wrapper{aspect-ratio:4/3;background:#f8f9ff;border:2px dashed #171717;border-radius:18px;place-items:center;display:grid;position:relative;overflow:hidden}.file-input-wrapper.has-preview input[type=file]{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;inset:0}.upload-options{justify-content:center;gap:16px;width:100%;padding:0 16px;display:flex}.upload-option-btn{cursor:pointer;background:#fff;border:2px solid #171717;border-radius:16px;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:8px;padding:18px 12px;font-size:.95rem;font-weight:800;display:flex;box-shadow:4px 4px #171717}.upload-option-btn:active{transform:translate(2px,2px);box-shadow:2px 2px #171717}.upload-option-btn input[type=file]{display:none}.upload-preview-img{object-fit:cover;width:100%;height:100%}.file-placeholder{font-size:.95rem;font-weight:700}.caption-input{font:inherit;border:2px solid #171717;border-radius:14px;outline:none;padding:12px;box-shadow:3px 3px #171717}.upload-submit-btn{color:#fff;cursor:pointer;background:#171717;border:2px solid #171717;border-radius:14px;padding:12px;font-size:.95rem;font-weight:800;box-shadow:3px 3px #ff9db8}.photo-modal-card{max-height:85dvh}.photo-modal-body{flex-direction:column;gap:10px;display:flex}.full-detail-img{object-fit:cover;border:2px solid #171717;border-radius:16px;width:100%;max-height:280px}.detail-caption{margin:0;font-size:1rem;font-weight:700}.detail-time{opacity:.6;font-size:.75rem}.modal-emoji-row{margin-top:4px}.modal-comments-section{flex-direction:column;gap:8px;margin-top:4px;display:flex}.modal-comments-section h4{margin:0;font-size:.9rem;font-weight:800}.modal-comments-list{background:#f8f9ff;border:2px solid #171717;border-radius:12px;flex-direction:column;gap:6px;max-height:120px;padding:8px;display:flex;overflow-y:auto}.delete-photo-btn{color:#b90000;cursor:pointer;background:#ffe8e8;border:2px solid #e12d2d;border-radius:12px;margin-top:6px;padding:8px;font-weight:800}.letter-modal{z-index:60;align-content:end;padding:12px;animation:.24s slideUp;display:grid;position:absolute;inset:0}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.letter-modal .close{justify-self:end;margin-bottom:8px;padding:8px 14px;font-weight:800;box-shadow:2px 2px #171717}.letter-modal article{border:2px solid #171717;border-radius:24px;flex-direction:column;gap:12px;min-height:60vh;padding:20px;display:flex;box-shadow:6px 6px #171717}.letter-header-row{justify-content:space-between;align-items:center;font-size:.95rem;font-weight:800;display:flex}.letter-stamp-display{font-size:2rem}.letter-modal article h2{opacity:.7;margin:0;font-size:.8rem}.letter-body-content{white-space:pre-wrap;font-size:1rem;line-height:1.6}.bottom-nav{inset-inline:0;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:20;background:#ffffffeb;border-top:2px solid #171717;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;padding:8px;display:grid;position:absolute;bottom:0}.bottom-nav button{border-radius:14px;flex-direction:column;justify-content:center;align-items:center;gap:2px;padding:8px 2px;font-size:.72rem;font-weight:800;display:flex;box-shadow:3px 3px #171717}.bottom-nav button.active{color:#fff;background:#171717}.nav-icon-wrap{font-size:1.1rem;position:relative}.nav-unread-badge{color:#fff;box-sizing:border-box;background:#ff4757;border:1.5px solid #171717;border-radius:8px;justify-content:center;align-items:center;min-width:16px;height:16px;padding:0 4px;font-size:10px;font-weight:700;display:flex;position:absolute;top:-4px;right:-8px}.notifications-modal-card{flex-direction:column;max-width:400px;max-height:80vh;display:flex}.notifications-body{flex:1;padding:0;overflow-y:auto}.push-promo{text-align:center;background:#ff47571a;border-bottom:1px solid #ffffff0d;padding:16px}.push-promo p{color:#ff4757;margin:0 0 12px;font-size:.9rem;font-weight:600}.notifications-list{margin:0;padding:0;list-style:none}.notification-item{border-bottom:1px solid #ffffff0d;gap:12px;padding:16px;transition:background .2s;display:flex}.notification-item:hover{background:#ffffff08}.notification-item.unread{background:#ff47570d}.notif-avatar{background:#ffffff0d;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.5rem;display:flex}.notif-content p{margin:0 0 4px;font-size:.95rem;line-height:1.3}.notif-content small{opacity:.5;font-size:.75rem}