.billing-canvas{padding:24px;max-width:1200px;margin:0 auto}.billing-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:80px 24px;color:var(--text-muted)}.billing-loading__spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:billing-spin 1s linear infinite}.billing-loading__spinner--sm{width:20px;height:20px;border-width:2px}@keyframes billing-spin{to{transform:rotate(360deg)}}.billing-auth-required{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:80px 24px;text-align:center}.billing-auth-required h2{margin:0;font-size:24px;font-weight:600;color:var(--text)}.billing-auth-required p{margin:0;color:var(--text-muted)}.billing-auth-required a{color:var(--accent)}.billing-top-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px}.billing-card{background:var(--bg-card, var(--bg));border:1px solid var(--border);border-radius:12px;overflow:hidden;margin-bottom:24px}.billing-card--wide{width:100%}.billing-top-grid .billing-card{margin-bottom:0}.billing-card__header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}.billing-card__header h2{margin:0;font-size:16px;font-weight:600;color:var(--text)}.billing-card__body{padding:20px}.billing-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;font-size:14px;font-weight:500;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text);cursor:pointer;transition:all .15s ease;text-decoration:none}.billing-btn:hover{border-color:var(--border-strong);background:var(--bg-elevated)}.billing-btn--primary{background:var(--accent);border-color:var(--accent);color:#fff}.billing-btn--primary:hover{opacity:.9}.billing-btn--ghost{background:transparent;border-color:transparent}.billing-btn--ghost:hover{background:var(--bg-elevated)}.billing-btn--sm{padding:4px 8px}.billing-btn:disabled{opacity:.5;cursor:not-allowed}.billing-balance{display:flex;align-items:baseline;gap:8px;margin-bottom:12px}.billing-balance__value{font-size:36px;font-weight:700;color:var(--text)}.billing-balance__label{font-size:18px;color:var(--text-muted)}.billing-renewal{font-size:14px;color:var(--text-muted);margin:0 0 20px}.billing-cancel-notice{font-size:13px;color:#dc2626;margin:0 0 12px;padding:8px 12px;background:#dc262614;border-radius:6px}.billing-balance-actions{margin-top:4px}.billing-tier-badge{display:inline-flex;padding:4px 10px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.03em;border-radius:4px;background:var(--bg-elevated);color:var(--text-muted)}.billing-tier-badge--free{background:#f3f4f6;color:#6b7280}.billing-tier-badge--starter{background:#dbeafe;color:#2563eb}.billing-tier-badge--growth{background:#f3e8ff;color:#9333ea}.billing-tier-badge--scale{background:#fef3c7;color:#d97706}.billing-plan-name{font-size:20px;font-weight:600;color:var(--text);margin-bottom:4px}.billing-plan-price{font-size:14px;color:var(--text-muted);margin-bottom:16px}.billing-plan-details{list-style:none;padding:0;margin:0 0 20px;display:flex;flex-direction:column;gap:6px}.billing-plan-details li{font-size:14px;color:var(--text-secondary, var(--text-muted));padding:4px 0}.billing-plan-details li:before{content:"✓";margin-right:8px;color:var(--accent);font-weight:600}.billing-plan-actions{display:flex;gap:12px}.billing-hint{font-size:13px;color:var(--text-muted);margin:0 0 16px}.billing-purchase-form{display:flex;align-items:flex-end;gap:16px;flex-wrap:wrap}.billing-purchase-input-group{display:flex;flex-direction:column;gap:6px}.billing-purchase-input-group label{font-size:13px;font-weight:500;color:var(--text-muted)}.billing-purchase-input-group input{width:140px;padding:8px 12px;font-size:14px;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text)}.billing-purchase-input-group input:focus{outline:none;border-color:var(--accent)}.billing-purchase-total{display:flex;align-items:center;gap:8px}.billing-purchase-total__label{font-size:14px;color:var(--text-muted)}.billing-purchase-total__value{font-size:20px;font-weight:600;color:var(--text)}.billing-purchase-error{margin-top:12px;padding:8px 12px;font-size:14px;color:#dc2626;background:#fee2e2;border-radius:6px}.billing-transactions-loading{display:flex;align-items:center;justify-content:center;gap:12px;padding:40px 24px;color:var(--text-muted);font-size:14px}.billing-transactions-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:48px 24px;text-align:center}.billing-transactions-empty__icon{color:var(--text-disabled)}.billing-transactions-empty h3{margin:0;font-size:18px;font-weight:600;color:var(--text)}.billing-transactions-empty p{margin:0;font-size:14px;color:var(--text-muted);max-width:360px}.billing-transactions-list{display:flex;flex-direction:column}.billing-transaction{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--border)}.billing-transaction:last-child{border-bottom:none}.billing-transaction__left{display:flex;flex-direction:column;gap:2px}.billing-transaction__desc{font-size:14px;font-weight:500;color:var(--text)}.billing-transaction__date{font-size:13px;color:var(--text-muted)}.billing-transaction__amount{font-size:14px;font-weight:600;white-space:nowrap}.billing-transaction__amount--debit{color:var(--text)}.billing-transaction__amount--credit{color:#16a34a}.auth-modal .modal-content{background:var(--bg);border:1px solid var(--border);border-radius:16px;max-width:400px;width:100%;padding:1.25rem;box-shadow:var(--shadow-lg)}.auth-modal form{display:flex;flex-direction:column;gap:12px}.auth-modal label{font-size:14px;font-weight:500;color:var(--text)}.auth-modal input[type=email]{padding:10px 12px;font-size:14px;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text)}.auth-modal input[type=email]:focus{outline:none;border-color:var(--accent)}.auth-modal .modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.auth-modal .modal-header h2{margin:0;font-size:1.25rem;font-weight:600}.auth-modal .modal-close{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-muted);padding:.25rem;line-height:1}.auth-modal .modal-close:hover{color:var(--text)}.auth-message{margin-top:12px;padding:10px 12px;font-size:14px;border-radius:6px}.auth-message--success{background:#dcfce7;color:#16a34a}.auth-message--error{background:#fee2e2;color:#dc2626}@media(max-width:768px){.billing-canvas{padding:16px}.billing-top-grid{grid-template-columns:1fr;gap:16px}.billing-purchase-form{flex-direction:column;align-items:stretch}.billing-purchase-input-group input{width:100%}.billing-plan-actions{flex-direction:column}.billing-transaction{flex-direction:column;align-items:flex-start;gap:4px}.billing-transaction__amount{align-self:flex-end}}