:root { --base-font-size: 18px; }
html { font-size: var(--base-font-size); font-family: 'Plus Jakarta Sans', system-ui, sans-serif; }
body { background: #f9fbf9; color: #1e293b; line-height: 1.6; }
.font-scale-sm { --base-font-size: 16px; }
.font-scale-md { --base-font-size: 18px; }
.font-scale-lg { --base-font-size: 20px; }
.font-scale-xl { --base-font-size: 22px; }
input:focus { border-color: #16a34a !important; box-shadow: 0 0 0 3px rgba(34,197,94,.18) !important; outline: none; }
input.invalid { border-color: #e11d48 !important; }
.tab-active { background: #fff; color: #15803d; box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.hidden-step { display: none; }
.lbl { display: block; font-size: .8rem; font-weight: 700; color: #334155; margin-bottom: .4rem; }
.fld { width: 100%; padding: .75rem .9rem; background: #f8fafc; border: 1px solid #cbd5e1; border-radius: .85rem; font-size: 1rem; color: #0f172a; }
.fld:focus { background: #fff; }
.eye { position: absolute; right: .6rem; top: 50%; transform: translateY(-50%); font-size: .75rem; font-weight: 700; color: #15803d; padding: .25rem .5rem; border-radius: .5rem; }
.eye:hover { background: #f0fdf4; }
.btn { width: 100%; padding: .85rem 1rem; border-radius: .85rem; font-weight: 800; color: #fff; background: linear-gradient(90deg, #16a34a, #059669); box-shadow: 0 2px 8px rgba(22,163,74,.3); }
.btn:hover { filter: brightness(.95); }
.btn:disabled { opacity: .6; cursor: wait; }
.btn-secondary { width: 100%; padding: .85rem 1rem; border-radius: .85rem; font-weight: 700; color: #475569; background: #f1f5f9; border: 1px solid #e2e8f0; }
.btn-secondary:hover { background: #e2e8f0; }