.app-shell{background:var(--bg);min-height:100vh;color:var(--text)}.topbar{z-index:30;border-bottom:1px solid var(--border);background:color-mix(in srgb, var(--bg) 86%, transparent);-webkit-backdrop-filter:blur(20px)saturate(150%);backdrop-filter:blur(20px)saturate(150%);justify-content:space-between;align-items:center;min-height:72px;padding:0 max(22px,50vw - 590px);display:flex;position:sticky;top:0}.brand{color:var(--text);background:0 0;border:0;align-items:center;gap:11px;padding:0;font-size:1.12rem;font-weight:850;display:flex}.brand-mark{background:linear-gradient(145deg, var(--accent), var(--accent-strong));width:38px;height:38px;color:var(--accent-text);box-shadow:0 8px 20px color-mix(in srgb, var(--accent) 25%, transparent);border-radius:13px;place-items:center;font-weight:950;display:grid}.topbar-actions{align-items:center;gap:9px;display:flex}.icon-button,.profile-chip{border:1px solid var(--border);background:var(--surface);width:40px;height:40px;color:var(--text);border-radius:13px;place-items:center;display:grid}.icon-button{font-size:1.18rem}.profile-chip{color:#fff;background:linear-gradient(145deg,#344054,#1d2939);font-size:.8rem;font-weight:850}.ghost-button,.back-button,.mini-link,.text-danger{background:0 0;border:0;font-weight:750}.ghost-button{border:1px solid var(--border);color:var(--text);border-radius:12px;padding:10px 13px}.back-button{color:var(--muted);padding:7px 0}.mini-link{color:var(--accent);padding:0}.text-danger{color:var(--danger);padding:7px}.primary-button{background:linear-gradient(145deg, var(--accent), var(--accent-strong));color:var(--accent-text);box-shadow:0 10px 26px color-mix(in srgb, var(--accent) 18%, transparent);border:0;border-radius:14px;padding:13px 18px;font-weight:850;transition:transform .16s,filter .16s}.primary-button:hover{filter:brightness(1.04);transform:translateY(-1px)}.primary-button:disabled{cursor:not-allowed;opacity:.42}.full-width{width:100%}.error-banner{z-index:60;border:1px solid color-mix(in srgb, var(--danger) 45%, var(--border));background:var(--surface);width:min(620px,100% - 28px);color:var(--danger);box-shadow:var(--shadow);border-radius:14px;align-items:center;gap:16px;padding:13px 14px;display:flex;position:fixed;top:82px;left:50%;transform:translate(-50%)}.error-banner span{flex:1}.error-banner button{color:inherit;background:0 0;border:0;font-size:1.2rem}.loading-bar{z-index:80;background:var(--accent);width:36%;height:3px;animation:1s ease-in-out infinite alternate loading;position:fixed;top:0;left:0}@keyframes loading{to{left:64%}}.toast{z-index:80;border:1px solid var(--border-strong);background:var(--surface);box-shadow:var(--shadow);border-radius:14px;padding:13px 16px;font-weight:800;animation:.25s toast-in;position:fixed;bottom:24px;right:22px}@keyframes toast-in{0%{opacity:0;transform:translateY(12px)}}.eyebrow{color:var(--accent);letter-spacing:.11em;text-transform:uppercase;margin:0 0 8px;font-size:.78rem;font-weight:900}.muted{color:var(--muted)}.home-page,.create-shell,.trip-page{width:min(1180px,100% - 36px);margin:0 auto}.home-page{padding:66px 0 110px}.home-heading{justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:30px;display:flex}.home-heading h1,.create-heading h1,.trip-hero h1{letter-spacing:-.055em;margin:0;font-size:clamp(2.6rem,6vw,5rem);line-height:.96}.home-heading p,.create-heading p{margin-bottom:0}.trip-card-grid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.trip-card,.new-trip-card{border:1px solid var(--border);background:var(--surface);min-height:330px;color:var(--text);text-align:left;border-radius:24px;transition:transform .2s,border-color .2s;overflow:hidden;box-shadow:0 16px 45px #00000014}.trip-card:hover,.new-trip-card:hover{border-color:var(--border-strong);transform:translateY(-4px)}.trip-card{grid-template-rows:180px 1fr;padding:0;display:grid}.trip-cover{background:linear-gradient(135deg,#164e63,#0891b2);place-items:center;font-size:3rem;display:grid}.cover-1{background:linear-gradient(135deg,#4c1d95,#c026d3)}.cover-2{background:linear-gradient(135deg,#7c2d12,#f97316)}.cover-3{background:linear-gradient(135deg,#14532d,#22c55e)}.trip-card-content{gap:7px;padding:19px;display:grid}.trip-card-title{font-size:1.25rem;font-weight:850}.trip-meta{color:var(--muted);font-size:.9rem}.trip-card-bottom{justify-content:space-between;align-items:flex-end;margin-top:auto;display:flex}.trip-card-bottom strong{font-size:1.2rem}.trip-card-bottom span{color:var(--muted);font-size:.86rem}.new-trip-card{color:var(--muted);text-align:center;border-style:dashed;align-content:center;place-items:center;gap:12px;padding:26px;display:grid}.new-trip-card span{background:var(--surface-2);width:58px;height:58px;color:var(--text);border-radius:18px;place-items:center;font-size:1.7rem;display:grid}.empty-home{border:1px solid var(--border);background:radial-gradient(circle at top, color-mix(in srgb, var(--accent) 12%, transparent), transparent 60%), var(--surface);text-align:center;border-radius:28px;justify-items:center;max-width:680px;margin:70px auto 95px;padding:52px 28px;display:grid}.empty-home-icon{background:var(--surface-3);width:72px;height:72px;color:var(--accent);border-radius:24px;place-items:center;font-size:2rem;display:grid}.empty-home h2{margin:22px 0 8px;font-size:2rem}.empty-home p{max-width:480px;color:var(--muted);margin:0 0 24px}.feature-strip{grid-template-columns:repeat(3,1fr);gap:12px;margin-top:54px;display:grid}.feature-strip article{border-top:1px solid var(--border);gap:13px;padding:18px;display:flex}.feature-strip article>span{color:var(--accent);font-size:1.2rem}.feature-strip p{color:var(--muted);margin:4px 0 0;font-size:.88rem}.create-page{background:radial-gradient(circle at 75% 10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 28rem);min-height:calc(100vh - 72px);padding:34px 0 90px}.create-heading{max-width:720px;margin:36px 0 30px}.create-layout{grid-template-columns:minmax(0,1fr) 380px;align-items:start;gap:22px;display:grid}.panel,.content-panel{border:1px solid var(--border);background:var(--surface);border-radius:24px;box-shadow:0 14px 50px #00000012}.create-form{padding:24px}.create-form label,.expense-form label{color:var(--muted);gap:8px;margin-bottom:17px;font-weight:750;display:grid}.create-form input,.create-form select,.expense-form input,.expense-form select{border:1px solid var(--border-strong);background:var(--surface-2);width:100%;color:var(--text);border-radius:13px;outline:none}.create-form input,.create-form select{padding:13px}.create-form input:focus,.expense-form input:focus,select:focus{border-color:color-mix(in srgb, var(--accent) 60%, 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var(--border-strong);background:var(--surface-2);border-radius:17px;align-items:center;gap:8px;margin-bottom:19px;padding:12px 16px;display:flex}.amount-field span{color:var(--muted);font-size:1.55rem;font-weight:700}.amount-field input{background:0 0;border:0;min-width:0;padding:0;font-size:2.1rem;font-weight:850}.expense-form input,.expense-form select{padding:13px}.split-grid{grid-template-columns:repeat(2,1fr);gap:8px;display:grid}.split-person{border:1px solid var(--border);background:var(--surface-2);cursor:pointer;border-radius:14px;grid-template-columns:auto 1fr auto;align-items:center;padding:10px;color:var(--text)!important;gap:9px!important;margin:0!important;display:grid!important}.split-person.selected{border-color:color-mix(in srgb, var(--accent) 50%, var(--border));background:color-mix(in srgb, var(--accent) 8%, var(--surface-2))}.split-person input{opacity:0;pointer-events:none;position:absolute}.checkmark{color:var(--accent);opacity:0}.split-person.selected 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