:root{--primary:#0f766e;--primary-dark:#115e59;--primary-soft:#ccfbf1;--accent:#2563eb;--success:#16a34a;--warning:#ca8a04;--danger:#dc2626;--bg:#f8fafc;--surface:#fff;--text:#0f172a;--muted:#64748b;--line:#e2e8f0;--shadow:0 1px 2px #0f172a0f, 0 8px 24px #0f172a0f;--radius:8px;--bottom-nav-height:64px}*{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--bg);min-height:100%;color:var(--text);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}button,input,textarea{font:inherit}a{color:inherit;text-decoration:none}.page{width:min(100%,680px);min-height:100dvh;padding:16px 16px calc(var(--bottom-nav-height) + 28px);margin:0 auto}.page-header{justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.page-header h1{font-size:26px;line-height:1.1}.page-header p,.muted{color:var(--muted)}.card,.order-card,.profile-card,.empty-state,.login-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.card{margin-bottom:12px;padding:16px}.card h2{margin-bottom:10px;font-size:17px}.order-list{gap:12px;display:grid}.order-card{cursor:pointer;padding:16px}.order-card-head{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.order-card h2{margin-top:2px;font-size:18px;line-height:1.25}.order-number{color:var(--muted);text-transform:uppercase;font-size:12px;font-weight:700}.order-description{color:#334155;margin:10px 0;line-height:1.45}.order-meta{flex-wrap:wrap;gap:8px;margin-bottom:10px;display:flex}.order-meta span,.chips span{border:1px solid var(--line);color:#334155;border-radius:999px;padding:5px 9px;font-size:12px}.order-address{border-left:3px solid var(--primary);color:#334155;padding-left:10px;font-size:14px}.badge{white-space:nowrap;border-radius:999px;align-items:center;padding:7px 10px;font-size:12px;font-weight:700;line-height:1;display:inline-flex}.btn{border-radius:var(--radius);cursor:pointer;border:0;justify-content:center;align-items:center;gap:8px;width:100%;min-height:46px;padding:12px 16px;font-weight:700;display:inline-flex}.btn:disabled{cursor:not-allowed;opacity:.55}.btn-primary{background:var(--primary);color:#fff}.btn-primary:active{background:var(--primary-dark)}.btn-outline{border:1px solid var(--line);color:var(--text);background:#fff}.icon-btn,.back-button{border:1px solid var(--line);border-radius:var(--radius);color:var(--text);cursor:pointer;background:#fff;justify-content:center;align-items:center;display:inline-flex}.icon-btn{width:42px;height:42px}.icon-btn svg{width:20px;height:20px}.back-button{min-height:38px;margin-bottom:12px;padding:8px 12px}.card-actions{margin-top:14px}.alert{border-radius:var(--radius);color:#92400e;background:#fef3c7;border:1px solid #fde68a;margin-bottom:12px;padding:12px;line-height:1.4}.alert.error,.error-text{color:var(--danger)}.alert.error{background:#fee2e2;border-color:#fecaca}.empty-state{text-align:center;padding:28px 18px}.empty-state h2{margin-bottom:8px;font-size:20px}.empty-state p{color:var(--muted)}.bottom-nav{border-top:1px solid var(--line);height:var(--bottom-nav-height);z-index:20;background:#fff;grid-template-columns:repeat(3,1fr);align-items:center;display:grid;position:fixed;bottom:0;left:0;right:0}.nav-item{color:var(--muted);cursor:pointer;background:0 0;border:0;flex-direction:column;justify-content:center;align-items:center;gap:4px;height:100%;font-size:11px;font-weight:700;display:flex}.nav-item svg{width:22px;height:22px}.nav-item.active{color:var(--primary)}.loading-screen,.login-page{justify-content:center;align-items:center;min-height:100dvh;padding:16px;display:flex}.spinner{border:3px solid var(--line);border-top-color:var(--primary);border-radius:50%;width:32px;height:32px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.login-page{background:linear-gradient(180deg, #0f766e1f, #f8fafc00 45%), var(--bg)}.login-panel{width:min(100%,420px);padding:24px}.brand-mark{background:var(--primary);border-radius:var(--radius);color:#fff;justify-content:center;align-items:center;width:48px;height:48px;margin-bottom:18px;font-size:22px;font-weight:800;display:flex}.login-panel h1{font-size:28px}.login-panel p{color:var(--muted);margin:6px 0 20px}.login-form{gap:14px;display:grid}.auth-link{color:var(--muted);text-align:center;font-size:14px}.auth-link a{color:var(--primary);font-weight:700}.login-form label,.form-label{color:#334155;gap:7px;font-size:14px;font-weight:700;display:grid}.form-input{border:1px solid var(--line);border-radius:var(--radius);color:var(--text);background:#fff;outline:none;width:100%;min-height:44px;padding:11px 12px}textarea.form-input{resize:vertical;min-height:96px}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.details-header{border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin-bottom:12px;padding:16px}.details-header h1{margin:4px 0 12px;font-size:24px;line-height:1.15}.info-grid,.stats-grid{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.stats-grid{grid-template-columns:repeat(3,1fr)}.info-grid span,.stats-grid span,.stack span{color:var(--muted);margin-bottom:3px;font-size:12px;display:block}.info-grid strong,.stats-grid strong,.stack strong{color:var(--text);display:block}.stack{gap:12px;display:grid}.attachments{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.attachments a{aspect-ratio:1;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);justify-content:center;align-items:center;display:flex;overflow:hidden}.attachments img{object-fit:cover;width:100%;height:100%}.sticky-actions{background:linear-gradient(180deg, #f8fafc00, var(--bg) 18%);bottom:var(--bottom-nav-height);gap:8px;width:100%;padding:18px 0 12px;display:grid;position:sticky}.profile-card{align-items:center;gap:14px;margin-bottom:12px;padding:16px;display:flex}.avatar{background:var(--primary-soft);border-radius:var(--radius);color:var(--primary-dark);justify-content:center;align-items:center;width:56px;height:56px;font-size:22px;font-weight:800;display:flex}.chips{flex-wrap:wrap;gap:8px;display:flex}.chat-container{height:calc(100dvh - var(--bottom-nav-height));flex-direction:column;display:flex}.chat-header{border-bottom:1px solid var(--line);background:#fff;align-items:center;gap:12px;padding:12px 16px;font-size:16px;font-weight:700;display:flex}.chat-messages{flex-direction:column;flex:1;gap:8px;padding:16px;display:flex;overflow-y:auto}.chat-bubble{word-break:break-word;border-radius:16px;max-width:80%;padding:10px 14px;font-size:15px;line-height:1.4}.chat-bubble.from-me{background:var(--primary);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.chat-bubble.from-other{color:var(--text);background:#f1f5f9;border-bottom-left-radius:4px;align-self:flex-start}.chat-bubble-time{opacity:.7;margin-top:4px;font-size:11px}.chat-input-bar{border-top:1px solid var(--line);background:#fff;gap:8px;padding:12px 16px;display:flex}.chat-input-bar input{border:1.5px solid var(--line);border-radius:24px;outline:none;flex:1;min-width:0;padding:10px 14px;font-size:15px}.chat-input-bar input:focus{border-color:var(--primary)}.chat-attach-btn,.chat-send-btn{cursor:pointer;border:0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;display:flex}.chat-attach-btn{border:1.5px solid var(--line);color:var(--muted);background:#fff}.chat-send-btn{background:var(--primary);color:#fff}.chat-attach-btn:disabled,.chat-send-btn:disabled{cursor:not-allowed;opacity:.5}