:root{--red: #E53935;--red-dark: #C62828;--red-light: #EF9A9A;--red-glow: 0 4px 16px rgba(229,57,53,.28);--red-soft: rgba(229,57,53,.07);--bg: #F5F5F7;--surface: #FFFFFF;--surface2: #F0F0F3;--border: rgba(0,0,0,.08);--border-red: rgba(229,57,53,.25);--text: #1A1A1A;--text-muted: #777777;--text-dim: #AAAAAA;--white: #FFFFFF;--green: #2E7D32;--green-soft: rgba(46,125,50,.12);--amber: #F57C00;--blue: #1565C0;--purple: #6A1B9A;--shadow-sm: 0 1px 4px rgba(0,0,0,.07), 0 2px 8px rgba(0,0,0,.04);--shadow-md: 0 2px 12px rgba(0,0,0,.09), 0 4px 20px rgba(0,0,0,.05);--shadow-card: 0 1px 3px rgba(0,0,0,.06), 0 2px 10px rgba(0,0,0,.04);--rank-volunteer: #9E9E9E;--rank-helper: #1565C0;--rank-protector: #6A1B9A;--rank-guardian: #E65100;--rank-champion: #C62828;--rank-legend: #B71C1C}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;background:var(--bg);color:var(--text);font-family:Inter,Segoe UI,system-ui,sans-serif;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:hidden}#app-root{max-width:480px;margin:0 auto;min-height:100vh;position:relative;background:var(--bg)}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#e5393540;border-radius:4px}h1{font-size:1.5rem;font-weight:800;color:var(--text)}h2{font-size:1.25rem;font-weight:700;color:var(--text)}h3{font-size:1.05rem;font-weight:700;color:var(--text)}.app-header{position:sticky;top:0;z-index:100;background:#fffffff5;backdrop-filter:blur(12px);border-bottom:1px solid var(--border);padding:.75rem 1rem;display:flex;align-items:center;gap:.75rem;box-shadow:0 1px 6px #0000000f}.app-header-title{font-size:1.1rem;font-weight:900;color:var(--red);letter-spacing:.08em;text-transform:uppercase}.app-header-sub{font-size:.625rem;color:var(--text-muted);letter-spacing:.14em;text-transform:uppercase}.header-logo{height:36px;width:auto}.bottom-nav{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:480px;background:#fffffffa;border-top:1px solid var(--border);box-shadow:0 -2px 12px #00000012;display:flex;z-index:100;padding-bottom:env(safe-area-inset-bottom,0)}.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:.2rem;padding:.6rem .25rem;background:none;border:none;cursor:pointer;color:var(--text-dim);transition:color .15s;text-decoration:none;position:relative}.nav-item.active{color:var(--red)}.nav-item:hover{color:var(--text-muted)}.nav-icon{font-size:1.25rem;line-height:1}.nav-label{font-size:.5625rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.nav-badge{position:absolute;top:.35rem;right:calc(50% - 1.1rem);background:var(--red);color:#fff;font-size:.5rem;font-weight:900;min-width:16px;height:16px;border-radius:8px;display:flex;align-items:center;justify-content:center;padding:0 3px}.page{padding:1rem 1rem 5rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:1rem;margin-bottom:.75rem;box-shadow:var(--shadow-card)}.card-red{background:var(--red-soft);border-color:var(--border-red)}.card:last-child{margin-bottom:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.625rem 1.25rem;border-radius:10px;border:none;font-weight:700;font-size:.875rem;cursor:pointer;transition:all .15s;text-decoration:none;letter-spacing:.02em}.btn-primary{background:var(--red);color:#fff;box-shadow:var(--red-glow)}.btn-primary:hover{background:var(--red-dark)}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border);box-shadow:var(--shadow-sm)}.btn-secondary:hover{border-color:var(--border-red)}.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-ghost:hover{background:var(--surface2)}.btn-block{width:100%}.btn-sm{padding:.375rem .75rem;font-size:.75rem;border-radius:8px}.form-group{margin-bottom:1rem}.form-label{display:block;font-size:.6875rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:.375rem}.form-input,.form-select,.form-textarea{width:100%;background:var(--surface);border:1.5px solid var(--border);border-radius:10px;padding:.625rem .875rem;color:var(--text);font-size:.9375rem;outline:none;transition:border-color .15s,box-shadow .15s;font-family:inherit;box-shadow:var(--shadow-sm)}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--red);box-shadow:0 0 0 3px #e539351a}.form-input::placeholder{color:var(--text-dim)}.form-textarea{resize:vertical;min-height:80px}.form-select option{background:var(--surface);color:var(--text)}.blood-badge{display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:28px;padding:0 8px;background:var(--red);color:#fff;font-weight:900;font-size:.8125rem;border-radius:6px;letter-spacing:.04em}.blood-badge-outline{background:transparent;border:1.5px solid var(--red);color:var(--red)}.urgency-badge{display:inline-flex;align-items:center;gap:.25rem;padding:2px 8px;border-radius:20px;font-size:.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em}.urgency-critical{background:#e539351a;color:#c62828;border:1px solid rgba(229,57,53,.25)}.urgency-urgent{background:#f57c001a;color:#e65100;border:1px solid rgba(245,124,0,.25)}.urgency-normal{background:#1565c014;color:#1565c0;border:1px solid rgba(21,101,192,.2)}.rank-badge{display:inline-flex;align-items:center;gap:.25rem;padding:2px 8px;border-radius:20px;font-size:.625rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em}.avatar{border-radius:50%;object-fit:cover;background:var(--surface2);flex-shrink:0;display:flex;align-items:center;justify-content:center;font-weight:900;color:var(--red);text-transform:uppercase}.avatar-sm{width:36px;height:36px;font-size:.875rem}.avatar-md{width:48px;height:48px;font-size:1.125rem}.avatar-lg{width:72px;height:72px;font-size:1.5rem}.avatar-xl{width:96px;height:96px;font-size:2rem}.section-label{font-size:.6875rem;font-weight:800;color:var(--text-muted);text-transform:uppercase;letter-spacing:.12em;margin-bottom:.75rem}.hero-banner{background:linear-gradient(135deg,#e53935,#c62828 60%,#b71c1c);border-radius:18px;padding:1.5rem;margin-bottom:1.25rem;position:relative;overflow:hidden;box-shadow:0 6px 24px #e539354d}.hero-banner:before{content:"";position:absolute;top:-30%;right:-10%;width:200px;height:200px;background:#ffffff14;border-radius:50%;pointer-events:none}.hero-banner:after{content:"";position:absolute;bottom:-40%;left:-5%;width:160px;height:160px;background:#ffffff0d;border-radius:50%;pointer-events:none}.hero-banner,.hero-banner h1,.hero-banner h2,.hero-banner h3{color:#fff}.stat-row{display:flex;gap:.75rem;margin-bottom:1rem}.stat-box{flex:1;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:.875rem .5rem;text-align:center;box-shadow:var(--shadow-card)}.stat-val{font-size:1.5rem;font-weight:900;color:var(--red);line-height:1}.stat-label{font-size:.5625rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em;font-weight:700;margin-top:.25rem}.donor-card{display:flex;align-items:center;gap:.875rem;padding:.875rem;background:var(--surface);border:1px solid var(--border);border-radius:14px;margin-bottom:.5rem;text-decoration:none;color:inherit;transition:all .15s;box-shadow:var(--shadow-card)}.donor-card:hover{border-color:var(--border-red);box-shadow:var(--shadow-md);transform:translateY(-1px)}.request-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:1rem;margin-bottom:.625rem;text-decoration:none;color:inherit;display:block;transition:all .15s;box-shadow:var(--shadow-card)}.request-card:hover{border-color:var(--border-red);box-shadow:var(--shadow-md);transform:translateY(-1px)}.request-card.critical{border-color:#e539354d}.msg-bubble{max-width:72%;padding:.5rem .875rem;border-radius:16px;font-size:.9375rem;line-height:1.45;margin-bottom:.375rem}.msg-out{background:var(--red);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}.msg-in{background:var(--surface);color:var(--text);align-self:flex-start;border-bottom-left-radius:4px;border:1px solid var(--border)}.msg-time{font-size:.5625rem;color:var(--text-dim)}.lb-row{display:flex;align-items:center;gap:.75rem;padding:.75rem;background:var(--surface);border:1px solid var(--border);border-radius:12px;margin-bottom:.5rem;box-shadow:var(--shadow-card)}.lb-rank-num{width:28px;text-align:center;font-weight:900;font-size:.875rem;color:var(--text-muted);flex-shrink:0}.lb-rank-gold{color:#e65100}.lb-rank-silver{color:#757575}.lb-rank-bronze{color:#8d6e63}.divider{border:none;border-top:1px solid var(--border);margin:.875rem 0}.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--red);border-radius:50%;animation:spin .7s linear infinite;margin:2rem auto}@keyframes spin{to{transform:rotate(360deg)}}.alert{padding:.75rem 1rem;border-radius:10px;font-size:.875rem;font-weight:500;margin-bottom:.875rem}.alert-danger{background:#e5393514;color:#c62828;border:1px solid rgba(229,57,53,.2)}.alert-success{background:#2e7d3214;color:#2e7d32;border:1px solid rgba(46,125,50,.2)}.empty-state{text-align:center;padding:3rem 1rem;color:var(--text-muted)}.empty-state-icon{font-size:3rem;margin-bottom:.75rem}.empty-state h3{margin-bottom:.5rem;color:var(--text)}.tab-strip{display:flex;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:4px;margin-bottom:1rem;box-shadow:var(--shadow-sm)}.tab-btn{flex:1;padding:.4rem;background:none;border:none;border-radius:9px;cursor:pointer;font-size:.75rem;font-weight:700;color:var(--text-muted);transition:all .15s;text-transform:uppercase;letter-spacing:.04em}.tab-btn.active{background:var(--red);color:#fff;box-shadow:0 2px 6px #e5393540}.progress-bar{height:6px;background:var(--surface2);border-radius:3px;overflow:hidden;margin-top:.5rem}.progress-fill{height:100%;background:linear-gradient(90deg,var(--red),#FF7043);border-radius:3px;transition:width .4s ease}.fab{position:fixed;bottom:5rem;right:max(1rem,calc(50% - 240px + 1rem));width:52px;height:52px;border-radius:50%;background:var(--red);color:#fff;border:none;font-size:1.5rem;cursor:pointer;box-shadow:0 4px 20px #e5393566;display:flex;align-items:center;justify-content:center;z-index:90;transition:transform .15s,box-shadow .15s}.fab:hover{transform:scale(1.08);box-shadow:0 6px 24px #e5393580}.modal-overlay{position:fixed;inset:0;background:#0006;z-index:200;display:flex;align-items:flex-end;justify-content:center}.modal-sheet{background:var(--surface);border:1px solid var(--border);border-radius:20px 20px 0 0;padding:1.5rem 1rem;width:100%;max-width:480px;max-height:85vh;overflow-y:auto;box-shadow:0 -4px 30px #0000001f}.modal-handle{width:40px;height:4px;background:var(--border);border-radius:2px;margin:0 auto 1.25rem}.online-dot{width:10px;height:10px;border-radius:50%;background:var(--green);box-shadow:0 0 6px #2e7d3280;flex-shrink:0}.offline-dot{width:10px;height:10px;border-radius:50%;background:var(--text-dim);flex-shrink:0}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}.blood-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:.5rem;margin-top:.5rem}.blood-option{display:flex;align-items:center;justify-content:center;height:40px;border-radius:8px;border:1.5px solid var(--border);background:var(--surface);font-weight:900;font-size:.875rem;cursor:pointer;transition:all .15s;color:var(--text);box-shadow:var(--shadow-sm)}.blood-option.selected{border-color:var(--red);background:var(--red);color:#fff}@keyframes pulse-red{0%,to{box-shadow:0 0 #e539354d}50%{box-shadow:0 0 0 8px #e5393500}}.pulse-critical{animation:pulse-red 2s infinite}.login-page{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--bg);padding:1.5rem}.login-card{width:100%;max-width:420px;background:var(--surface);border-radius:20px;padding:2rem 1.5rem;box-shadow:var(--shadow-md);border:1px solid var(--border)}.login-logo{text-align:center;margin-bottom:1.75rem}.login-logo-text{font-size:2rem;font-weight:900;color:var(--red);letter-spacing:.06em}.login-logo-sub{font-size:.75rem;color:var(--text-muted);letter-spacing:.1em}