:root{--orange: #f97316;--orange-dark: #ea580c;--orange-light: #fed7aa;--bg: #0f0f0f;--bg-card: #1a1a1a;--bg-card2: #242424;--text: #f5f5f5;--text2: #a3a3a3;--text3: #737373;--border: #333;--bg-surface: #1a1a1a;--green: #22c55e;--red: #ef4444;--blue: #3b82f6;--yellow: #eab308;--bg1: #1a1a1a;--bg2: #242424;--primary: #f97316}input,select,textarea{color:var(--text)}input::placeholder,textarea::placeholder{color:var(--text3)}button,input,select,textarea{color:var(--text)}select option{background:var(--bg-card);color:var(--text)}*{box-sizing:border-box;margin:0;padding:0}html{background:var(--bg-card)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overscroll-behavior:none;min-height:100vh}a{color:var(--orange);text-decoration:none}a:hover{color:var(--orange-dark)}.app-layout{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1;padding:16px;padding-top:env(safe-area-inset-top,8px);padding-bottom:calc(70px + env(safe-area-inset-bottom));max-width:600px;margin:0 auto;width:100%}.bottom-nav{position:fixed!important;bottom:0!important;left:0;right:0;background:var(--bg-card);border-top:1px solid var(--border);display:flex;justify-content:space-evenly;align-items:center;height:56px;padding:0;padding-bottom:env(safe-area-inset-bottom,0px);z-index:10000;will-change:transform}.nav-item{display:flex;flex-direction:column;align-items:center;gap:2px;flex:1;padding:6px 0;border:none;background:none;color:var(--text3);cursor:pointer;font-size:11px;min-width:0;transition:color .2s}.nav-item.active{color:var(--orange)}.nav-item svg{width:22px;height:22px}.card{background:var(--bg-card);border-radius:16px;padding:16px;margin-bottom:12px}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:16px}.stat-card{background:var(--bg-card2);border-radius:12px;padding:14px;text-align:center}.stat-card .value{font-size:24px;font-weight:800;color:var(--orange);font-variant-numeric:tabular-nums}.stat-card .label{font-size:13px;color:var(--text3);margin-top:2px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:12px;border:none;font-weight:600;font-size:16px;cursor:pointer;transition:all .2s;width:100%}.btn-primary{background:var(--orange);color:#fff}.btn-primary:hover{background:var(--orange-dark)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--bg-card2);color:var(--text);border:1px solid var(--text2)}.btn-secondary:hover{border-color:var(--text2);background:var(--bg-card)}.btn-danger{background:var(--red);color:#fff}.btn-sm{padding:6px 12px;font-size:14px;width:auto}.input-group{margin-bottom:14px}.input-group label{display:block;font-size:14px;color:var(--text2);margin-bottom:4px;font-weight:500}.input{width:100%;padding:10px 14px;background:var(--bg-card2);border:1px solid var(--border);border-radius:10px;color:var(--text);font-size:16px;outline:none;transition:border-color .2s}.input:focus{border-color:var(--orange)}.input::placeholder{color:var(--text3)}select.input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23a3a3a3' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.page-header h1{font-size:20px;font-weight:700}.list-item{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--border)}.list-item:last-child{border-bottom:none}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:20px;font-size:13px;font-weight:600}.badge-green{background:#22c55e26;color:var(--green)}.badge-red{background:#ef444426;color:var(--red)}.badge-yellow{background:#eab30826;color:var(--yellow)}.badge-blue{background:#3b82f626;color:var(--blue)}.badge-gray{background:#a3a3a326;color:var(--text3)}.tabs{display:flex;gap:4px;background:var(--bg-card);border-radius:12px;padding:4px;margin-bottom:16px;overflow-x:auto}.tab{flex:1;padding:8px 12px;border:none;background:none;color:var(--text3);font-size:13px;font-weight:600;cursor:pointer;border-radius:8px;white-space:nowrap;transition:all .2s}.tab.active{background:var(--orange);color:#fff}.sheet-overlay{position:fixed;inset:0;background:#0009;z-index:200;display:flex;align-items:flex-end;justify-content:center}.sheet{background:var(--bg-card);border-radius:20px 20px 0 0;padding:20px;width:100%;max-width:600px;max-height:85dvh;overflow-y:auto;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.sheet-handle{width:40px;height:4px;background:var(--text3);border-radius:2px;margin:0 auto 16px}.empty-state{text-align:center;padding:40px 20px;color:var(--text3)}.empty-state svg{margin-bottom:12px;opacity:.5}.empty-state p{font-size:16px}.avail-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:6px}.slot{padding:8px 6px;border-radius:8px;text-align:center;font-size:14px;cursor:pointer;border:1px solid var(--border);transition:all .2s}.slot.available{background:var(--bg-card2)}.slot.available:hover{border-color:var(--orange);background:#f973161a}.slot.peak{border-color:var(--yellow)}.slot.booked{background:var(--bg-card2);opacity:.4;cursor:not-allowed}.slot .time{font-weight:700}.slot .price{font-size:14px;color:var(--text3)}.toast{position:fixed;top:20px;left:50%;transform:translate(-50%);padding:10px 20px;border-radius:12px;font-size:13px;font-weight:600;z-index:300;animation:fadeIn .3s ease}.toast-success{background:var(--green);color:#fff}.toast-error{background:var(--red);color:#fff}@keyframes fadeIn{0%{opacity:0;transform:translate(-50%) translateY(-10px)}to{opacity:1;transform:translate(-50%) translateY(0)}}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}@media(prefers-color-scheme:light){:root:not([data-theme=dark]){--orange: #EA580C;--orange-dark: #C2410C;--orange-light: #FED7AA;--bg: #F5F5F5;--bg-card: #FFFFFF;--bg-card2: #F0F0F0;--text: #1A1A1A;--text2: #4A4A4A;--text3: #787878;--border: #D4D4D4;--bg-surface: #FFFFFF;--bg1: #FFFFFF;--bg2: #F0F0F0;--primary: #EA580C}}[data-theme=light]{--orange: #EA580C;--orange-dark: #C2410C;--orange-light: #FED7AA;--bg: #F5F5F5;--bg-card: #FFFFFF;--bg-card2: #F0F0F0;--bg-surface: #FFFFFF;--text: #1A1A1A;--text2: #4A4A4A;--text3: #787878;--border: #D4D4D4;--bg1: #FFFFFF;--bg2: #F0F0F0;--primary: #EA580C}@keyframes slideDown{0%{transform:translateY(-100%)}to{transform:translateY(0)}}.ptr-spinner{width:16px;height:16px;border:2px solid var(--border, #333);border-top-color:var(--orange, #f97316);border-radius:50%;animation:ptr-spin .6s linear infinite}@keyframes ptr-spin{to{transform:rotate(360deg)}}.student-theme{--bg-surface: #1a1a1a}.student-theme .main-content{padding:0;padding-top:env(safe-area-inset-top,8px);padding-bottom:calc(70px + env(safe-area-inset-bottom))}.student-theme .page-container{padding:0}.student-theme .bottom-nav,.coach-theme .bottom-nav{background:var(--bg-card)}