:root {
  --bg: #1A1A2E;
  --bg-card: #16213E;
  --text: #EAEAEA;
  --text-sec: #8B8FA3;
  --text-muted: #4A4E69;
  --primary: #E74C3C;
  --secondary: #F39C12;
  --accent: #00B894;
  --border: rgba(231,76,60,0.08);
  --radius: 14px;
  --font: 'Inter',system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh}

.header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:var(--bg-card);border-bottom:1px solid var(--border)}
.header h1{font-size:1rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.header-right{display:flex;gap:6px}

.btn{padding:6px 14px;border:1px solid var(--border);border-radius:10px;background:transparent;color:var(--text-sec);font-family:var(--font);font-size:.75rem;cursor:pointer;transition:.2s}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn.primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;border:none;font-weight:600}
.btn.primary:hover{opacity:.9}
.btn.danger{color:var(--primary);border-color:rgba(231,76,60,.2)}
.btn.lang-btn{font-size:.68rem}

.app{max-width:480px;margin:0 auto;padding:12px}

.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:14px;margin-bottom:10px}
.card h2{font-size:.72rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px}

.big-input-wrap{display:flex;align-items:center;gap:6px;margin-bottom:8px}
.currency{font-size:1.2rem;font-weight:700;color:var(--secondary)}
.big-input{flex:1;border:none;background:transparent;color:var(--text);font-family:var(--font);font-size:1.8rem;font-weight:800;outline:none}
.big-input::placeholder{color:var(--text-muted)}

.row{display:flex;gap:8px}
.form-group{flex:1}
.form-group label{display:block;font-size:.62rem;color:var(--text-muted);margin-bottom:2px}
.input{width:100%;padding:6px 8px;border:1px solid var(--border);border-radius:8px;background:rgba(255,255,255,.03);color:var(--text);font-family:var(--font);font-size:.75rem}
.input:focus{outline:none;border-color:var(--accent)}
.input.small{width:60px}

/* Toggles */
.toggle-row{display:flex;align-items:center;justify-content:space-between;padding:4px 0}
.toggle-label{font-size:.78rem;color:var(--text-sec)}
.service-row{display:flex;align-items:center;gap:6px}
.toggle{position:relative;width:38px;height:20px;display:inline-block}
.toggle input{opacity:0;width:0;height:0}
.slider{position:absolute;top:0;left:0;right:0;bottom:0;background:var(--text-muted);border-radius:20px;cursor:pointer;transition:.3s}
.slider::before{content:'';position:absolute;width:16px;height:16px;left:2px;bottom:2px;background:#fff;border-radius:50%;transition:.3s}
.toggle input:checked+.slider{background:var(--accent)}
.toggle input:checked+.slider::before{transform:translateX(18px)}

/* People */
.people-control{display:flex;align-items:center;justify-content:center;gap:16px}
.circle-btn{width:36px;height:36px;border:2px solid var(--border);border-radius:50%;background:transparent;color:var(--text);font-size:1.2rem;cursor:pointer;transition:.2s;display:flex;align-items:center;justify-content:center}
.circle-btn:hover{border-color:var(--accent);color:var(--accent)}
.ppl-count{font-size:2rem;font-weight:800;color:var(--secondary);min-width:40px;text-align:center}
.ppl-label{font-size:.72rem;color:var(--text-muted)}

/* Results */
.result-card{background:linear-gradient(135deg,var(--bg-card),rgba(26,26,46,.9))}
.result-row{display:flex;justify-content:space-between;padding:4px 0;font-size:.78rem;color:var(--text-sec)}
.result-row.total{border-top:1px solid var(--border);margin-top:4px;padding-top:8px;font-size:.92rem;font-weight:700;color:var(--text)}
.result-row.per-person{font-size:1.1rem;font-weight:800;color:var(--accent)}

.actions{display:flex;gap:8px;margin-bottom:10px}
.actions .btn{flex:1}

/* History */
.history-item{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid var(--border);font-size:.72rem}
.history-item .cat{color:var(--text-muted);font-size:.62rem}
.history-item .amt{color:var(--secondary);font-weight:600}

@media(max-width:480px){
  .app{padding:8px}
  .big-input{font-size:1.4rem}
}