:root{--bg:#0f1117;--bg-card:#1a1d27;--bg-input:#252836;--text:#e4e4e7;--text-muted:#9ca3af;--primary:#e8c84a;--primary-dark:#b89d2e;--green:#22c55e;--red:#ef4444;--border:#2e3141;--radius:10px;
--z-rest:#85B7EB;--z1:#97C459;--z2:#5DCAA5;--z3:#EF9F27;--z4:#C2410C;--z5:#DC2626;
--z-rest-text:#042C53;--z1-text:#173404;--z2-text:#04342C;--z3-text:#412402;--z4-text:#fff;--z5-text:#fff}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:system-ui,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;-webkit-tap-highlight-color:transparent}

/* Nav */
#nav{display:flex;align-items:center;gap:12px;padding:10px 16px;background:var(--bg-card);border-bottom:1px solid var(--border);overflow-x:auto}
.nav-brand{font-weight:900;font-size:20px;color:var(--primary);white-space:nowrap}
.nav-links{display:flex;gap:2px;margin-left:auto}
.nav-links a{display:flex;align-items:center;gap:4px;padding:8px 10px;border-radius:var(--radius);color:var(--text-muted);text-decoration:none;font-size:13px;white-space:nowrap}
.nav-links a:hover{background:var(--bg-input);color:var(--text)}
.nav-links a.active{background:var(--primary);color:#1a1a1a}
.nav-links a i{font-size:18px}
.nav-logout{margin-left:8px}
@media(max-width:500px){.nav-links a span{display:none}}

#main{max-width:640px;margin:0 auto;padding:16px}
.page{display:none}.page.active{display:block}
.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.page-header h1{font-size:22px;color:var(--primary)}

/* Cards */
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:14px;margin-bottom:10px}
.list{display:flex;flex-direction:column;gap:8px}
.list-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px}
.list-item-title{font-size:15px;font-weight:600}
.list-item-sub{font-size:12px;color:var(--text-muted);margin-top:2px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius);border:none;cursor:pointer;font-size:14px;font-weight:600;transition:all .15s}
.btn-primary{background:var(--primary);color:#1a1a1a}.btn-primary:hover{background:var(--primary-dark)}
.btn-secondary{background:var(--bg-input);color:var(--text);border:1px solid var(--border)}
.btn-sm{padding:6px 10px;font-size:12px}
.btn-block{width:100%;justify-content:center;padding:12px}
.btn-icon{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:18px}

/* Forms */
input,select,textarea{background:var(--bg-input);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px;font-size:14px;width:100%;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--primary)}
label{display:block;font-size:13px;color:var(--text-muted);margin-bottom:4px}
.form-group{margin-bottom:14px}
.filters{margin-bottom:12px}

/* Login */
.login-page{display:flex;justify-content:center;align-items:center;min-height:100vh;padding:20px}
.login-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:40px;width:100%;max-width:360px;text-align:center}
.login-logo{font-size:48px;margin-bottom:8px;color:var(--primary)}
.login-card h1{font-size:24px;margin-bottom:4px}
.login-sub{color:var(--text-muted);font-size:14px;margin-bottom:24px}
.login-card .form-group{text-align:left}
.login-error{color:var(--red);font-size:13px;min-height:20px;margin-bottom:8px}

/* Onboarding */
.page-full{display:flex;justify-content:center;align-items:center;min-height:100vh;padding:20px}
.onboard-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:30px;width:100%;max-width:480px}
.onboard-card h1{font-size:22px;color:var(--primary);margin-bottom:16px}
.onboard-card p{color:var(--text-muted);font-size:14px;margin-bottom:16px}
.option-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;margin-bottom:16px}
.option-card{background:var(--bg-input);border:2px solid var(--border);border-radius:var(--radius);padding:16px 12px;cursor:pointer;text-align:center;color:var(--text);font-size:13px;display:flex;flex-direction:column;gap:6px;align-items:center;transition:all .15s}
.option-card:hover{border-color:var(--primary)}
.option-card.selected{border-color:var(--primary);background:rgba(232,200,74,.1)}
.option-icon{font-size:24px}

/* Streak */
.streak-bar{display:flex;align-items:center;gap:12px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;margin-bottom:16px}
.streak-num{font-size:28px;font-weight:900;color:var(--primary)}
.streak-label{font-size:12px;color:var(--text-muted)}
.streak-best{font-size:12px;color:var(--text-muted);margin-left:auto}

/* Today */
#today-title{font-size:20px;color:var(--primary);margin-bottom:16px}
.slot-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}
.slot-label{font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:8px}
.slot-name{font-size:16px;font-weight:600;margin-bottom:4px}
.slot-blocks{font-size:12px;color:var(--text-muted);margin-bottom:10px}
.slot-actions{display:flex;gap:8px}
.slot-done{opacity:.5;border-color:var(--green)}
.slot-done .slot-label{color:var(--green)}

/* Week grid */
#week-grid{display:flex;flex-direction:column;gap:8px}
.week-day{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:12px}
.week-day-label{font-size:13px;font-weight:700;color:var(--primary);margin-bottom:6px}
.week-day-slots{display:flex;gap:8px}
.week-slot{flex:1;background:var(--bg-input);border-radius:6px;padding:8px;font-size:11px}
.week-slot-done{background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.3)}

/* Zone colors (blocks & runner) */
.zone-rest{background:var(--z-rest);color:var(--z-rest-text)}
.zone-Z1{background:var(--z1);color:var(--z1-text)}
.zone-Z2{background:var(--z2);color:var(--z2-text)}
.zone-Z3{background:var(--z3);color:var(--z3-text)}
.zone-Z4{background:var(--z4);color:var(--z4-text)}
.zone-Z5{background:var(--z5);color:var(--z5-text)}
.zone-badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:10px;font-weight:700}

/* Runner */
.runner-overlay{position:fixed;inset:0;z-index:200;display:flex;flex-direction:column;background:var(--bg);transition:background .3s}
.runner-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--bg-card)}
.runner-session-time{font-size:16px;font-weight:700;font-family:monospace;color:var(--primary)}
.runner-progress{font-size:13px;color:var(--text-muted)}
.runner-close{background:none;border:none;color:var(--text-muted);font-size:24px;cursor:pointer}
.runner-body{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px;transition:background .4s,color .4s}
.runner-zone-label{font-size:14px;font-weight:800;letter-spacing:2px;text-transform:uppercase;margin-bottom:8px}
.runner-block-name{font-size:24px;font-weight:700;margin-bottom:12px;text-align:center}
.runner-block-time{font-size:64px;font-weight:900;font-family:monospace;letter-spacing:2px}
.runner-params{font-size:14px;margin-top:12px;text-align:center;opacity:.8}
.runner-next{background:var(--bg-card);padding:12px 16px;font-size:13px;color:var(--text-muted);min-height:44px;display:flex;align-items:center;gap:8px}
.runner-controls{padding:16px;display:flex;justify-content:center}
.runner-btn{width:100%;max-width:400px;padding:18px;border:none;border-radius:var(--radius);background:var(--primary);color:#1a1a1a;font-size:18px;font-weight:800;cursor:pointer;letter-spacing:1px;transition:transform .1s}
.runner-btn:active{transform:scale(.97)}
.runner-btn-end{background:rgba(239,68,68,.15);border:1px solid var(--red);color:var(--red);padding:10px;border-radius:var(--radius);font-size:12px;font-weight:700;cursor:pointer;letter-spacing:.5px;margin-top:6px;width:100%;max-width:400px;transition:all .15s}
.runner-btn-end:active{transform:scale(.97);background:rgba(239,68,68,.3)}

/* Runner inputs */
.runner-inputs{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:12px}
.runner-inputs label{display:flex;flex-direction:column;align-items:center;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:inherit;opacity:.8}
.runner-input{width:80px;text-align:center;padding:8px;border-radius:8px;border:2px solid rgba(255,255,255,.3);background:rgba(0,0,0,.2);color:inherit;font-size:22px;font-weight:800;font-family:monospace;margin-top:4px;-webkit-appearance:none}
.runner-input::placeholder{color:inherit;opacity:.4;font-weight:600}
.runner-input:focus{border-color:rgba(255,255,255,.6);outline:none;background:rgba(0,0,0,.35)}
.runner-suggested{font-size:11px;opacity:.45;margin-top:8px;letter-spacing:.3px}
.runner-notes{font-size:13px;opacity:.6;margin-top:6px;font-style:italic}

/* Modal */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:300;justify-content:center;align-items:center;padding:20px}
.modal-overlay.open{display:flex}
.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;width:100%;max-width:480px;max-height:90vh;overflow-y:auto}
.modal-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border)}
.modal-header h2{font-size:18px}
.modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:12px 20px;border-top:1px solid var(--border)}

.empty{text-align:center;color:var(--text-muted);padding:40px;font-size:14px}

/* Deload */
.deload-badge{display:inline-block;background:rgba(59,130,246,.15);color:#60a5fa;padding:2px 10px;border-radius:6px;font-size:12px;font-weight:700;margin-left:8px;vertical-align:middle;letter-spacing:.5px}
.deload-week-banner{background:rgba(59,130,246,.1);border:1px solid rgba(59,130,246,.3);color:#60a5fa;padding:10px 16px;border-radius:var(--radius);margin-bottom:12px;font-size:13px;font-weight:600;text-align:center}

/* RPE stars */
.rpe-stars{display:flex;gap:4px;margin:8px 0}
.rpe-star{font-size:28px;cursor:pointer;opacity:.3;transition:opacity .15s}
.rpe-star.active{opacity:1}