.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:var(--font-display);font-weight:700;border-radius:12px;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);text-decoration:none;white-space:nowrap;position:relative;overflow:hidden}.btn:focus-visible{outline:2px solid var(--tc-cyan);outline-offset:3px}.btn--md{padding:12px 24px;font-size:14px}.btn--lg{padding:16px 36px;font-size:16px;border-radius:14px}.btn--primary{background:var(--vibrant-gradient);color:var(--tc-text);box-shadow:0 10px 20px -5px #7b2fff4d}.btn--primary:hover{transform:translateY(-3px);box-shadow:0 15px 30px -5px #7b2fff80;filter:brightness(1.1)}.btn--ghost{background:transparent;color:var(--tc-muted);padding:12px 0}.btn--ghost:hover{color:var(--tc-text);transform:translate(4px)}.btn--outline{background:transparent;border:1.5px solid var(--tc-border);color:var(--tc-text)}.btn--outline:hover{border-color:var(--tc-cyan);color:var(--tc-text);background:var(--tc-glass)}.btn--accent{background:#00d4ff14;border:1.5px solid rgba(0,212,255,.3);color:var(--tc-cyan);font-family:var(--font-mono);font-size:13px;letter-spacing:.5px}.btn--accent:hover{background:#00d4ff26;border-color:var(--tc-cyan);transform:translateY(-2px)}.btn--full{width:100%;flex:1}.btn--disabled,.btn:disabled{opacity:.55;cursor:not-allowed;pointer-events:none;transform:none;box-shadow:none;filter:none}.error-fallback{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:32px 20px;background:radial-gradient(circle at top,rgba(0,212,255,.12),transparent 36%),radial-gradient(circle at bottom right,rgba(123,47,255,.14),transparent 34%),var(--tc-bg-primary)}.error-fallback__inner{width:min(100%,640px);padding:36px 28px;border-radius:28px;border:1px solid var(--tc-border);background:linear-gradient(180deg,#ffffff0f,#ffffff05),var(--tc-card);box-shadow:var(--shadow-card);text-align:center}.error-fallback__icon{width:64px;height:64px;margin:0 auto 18px;border-radius:18px;display:inline-flex;align-items:center;justify-content:center;color:var(--tc-text);background:#ffaa001f;border:1px solid rgba(255,170,0,.28)}.error-fallback__eyebrow{display:inline-block;margin-bottom:12px;font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--tc-cyan-2)}.error-fallback__title{margin-bottom:14px;font-family:var(--font-heading);font-size:clamp(2rem,6vw,3.25rem);line-height:.98;letter-spacing:-.04em;color:var(--tc-text)}.error-fallback__text{max-width:48ch;margin:0 auto;color:var(--tc-muted);line-height:1.7}.error-fallback__actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:28px}@media(max-width:640px){.error-fallback__inner{padding:28px 20px;border-radius:24px}.error-fallback__actions{flex-direction:column}}