:root {
  --bg-primary: #0a0c10;
  --bg-surface: #141824;
  --text-main: #e2e8f0;
  --text-muted: #64748b;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.25);
  --border: #1e293b;
  --warning: #f59e0b;
  --success: #10b981;
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { background: var(--bg-primary); color: var(--text-main); display: flex; justify-content: center; align-items: center; min-height: 100vh; padding: 1rem; }
.app-container { width: 100%; max-width: 520px; background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5); }
header { text-align: center; margin-bottom: 0.75rem; }
h1 { font-size: 1.25rem; letter-spacing: 0.15em; color: var(--accent); }
.subtitle { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.2rem; }

.visualizer-wrapper { position: relative; width: 100%; height: 170px; display: flex; flex-direction: column; justify-content: center; align-items: center; }
#pulseCanvas { width: 100%; height: 100%; display: block; }
.frequency-badge { position: absolute; font-size: 1.15rem; font-weight: 700; color: var(--accent); text-shadow: 0 0 10px var(--accent-glow); }
.carrier-badge { position: absolute; bottom: 20px; font-size: 0.75rem; color: var(--text-muted); }
.phase-status-badge { position: absolute; top: 8px; font-size: 0.7rem; font-weight: 700; padding: 3px 8px; border-radius: 4px; letter-spacing: 0.05em; text-transform: uppercase; background: rgba(56, 189, 248, 0.15); color: var(--accent); border: 1px solid var(--accent); }

.mode-tabs { display: flex; gap: 0.4rem; background: var(--bg-primary); padding: 0.25rem; border-radius: 8px; margin-bottom: 0.85rem; }
.tab-btn { flex: 1; background: none; border: none; color: var(--text-muted); padding: 0.45rem; font-size: 0.72rem; font-weight: 600; cursor: pointer; border-radius: 6px; transition: all 0.2s; }
.tab-btn.active { background: var(--border); color: var(--accent); }

.controls-panel { display: flex; flex-direction: column; gap: 0.75rem; }
.panel-row, .slider-group { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.8rem; color: var(--text-muted); }

.global-tuning-card { background: rgba(56, 189, 248, 0.04); border: 1px solid var(--border); border-radius: 8px; padding: 0.65rem; }
.panel-header-small { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--accent); margin-bottom: 0.4rem; }

.card-section { background: rgba(56, 189, 248, 0.02); border: 1px solid var(--border); border-radius: 8px; padding: 0.65rem; }
.section-title { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--accent); }
.section-header-toggle { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.4rem; }
.toggle-inline { font-size: 0.75rem; color: var(--text-main); display: flex; align-items: center; gap: 0.3rem; cursor: pointer; }

.label-with-action { display: flex; justify-content: space-between; align-items: center; }
.btn-text { background: none; border: none; color: var(--accent); font-size: 0.72rem; font-weight: 600; cursor: pointer; text-decoration: underline; }

.grid-controls { display: grid; grid-template-columns: 1fr 1fr; gap: 0.55rem; margin-top: 0.3rem; }
.control-group { display: flex; flex-direction: column; gap: 0.2rem; }
label { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em; }
input, select { background: var(--bg-primary); border: 1px solid var(--border); border-radius: 6px; color: var(--text-main); padding: 0.45rem; font-size: 0.82rem; outline: none; }
input:focus, select:focus { border-color: var(--accent); }

.protocol-checkbox-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem; font-size: 0.75rem; color: var(--text-main); margin-top: 0.2rem; }
.protocol-checkbox-grid label { text-transform: none; display: flex; align-items: center; gap: 0.4rem; cursor: pointer; }
.status-warning { font-size: 0.7rem; color: var(--warning); margin-top: 0.2rem; line-height: 1.3; }

.analytics-card { background: var(--bg-primary); border: 1px solid var(--border); border-radius: 8px; padding: 0.85rem; font-size: 0.75rem; }
.analytics-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; }
.analytics-header h3 { font-size: 0.85rem; color: var(--accent); }
.badge-status { font-size: 0.65rem; padding: 2px 6px; border-radius: 4px; background: rgba(16, 185, 129, 0.15); color: var(--success); border: 1px solid var(--success); }

.analytics-summary-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.5rem; margin-bottom: 0.75rem; }
.summary-box { background: var(--bg-surface); border: 1px solid var(--border); border-radius: 6px; padding: 0.5rem; text-align: center; }
.summary-label { display: block; font-size: 0.65rem; color: var(--text-muted); text-transform: uppercase; }
.summary-value { font-size: 1rem; font-weight: 700; color: var(--accent); margin-top: 0.2rem; }

.analytics-log-list { max-height: 180px; overflow-y: auto; display: flex; flex-direction: column; gap: 0.4rem; }
.stat-row { display: flex; justify-content: space-between; align-items: center; padding: 0.4rem; background: var(--bg-surface); border-radius: 6px; border: 1px solid var(--border); }
.empty-state { text-align: center; color: var(--text-muted); padding: 1rem; }

.safety-toggle { display: flex; align-items: center; gap: 0.5rem; font-size: 0.75rem; color: var(--text-main); }
.action-row { display: flex; gap: 0.5rem; margin-top: 0.25rem; }
.btn { flex: 1; padding: 0.7rem; border-radius: 6px; font-weight: 600; cursor: pointer; border: none; }
.btn.primary { background: var(--accent); color: #000; }
.btn.secondary { background: var(--border); color: var(--text-main); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.progress-container { width: 100%; height: 4px; background: var(--border); border-radius: 2px; overflow: hidden; margin-top: 0.25rem; }
.progress-bar { width: 0%; height: 100%; background: var(--accent); transition: width 0.3s linear; }
.progress-bar.marquee-active { width: 100% !important; background: linear-gradient(90deg, var(--border) 0%, var(--accent) 50%, var(--border) 100%); background-size: 200% 100%; animation: marqueeGlow 2.5s infinite linear; }
@keyframes marqueeGlow { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

.hidden { display: none !important; }
.modal-backdrop { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.8); display: flex; justify-content: center; align-items: center; padding: 1rem; z-index: 100; backdrop-filter: blur(4px); }
.modal-card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; width: 100%; max-width: 320px; text-align: center; box-shadow: 0 10px 30px rgba(0,0,0,0.8); }
.modal-card h3 { font-size: 1rem; color: var(--accent); margin-bottom: 0.3rem; }
.modal-card p { font-size: 0.75rem; color: var(--text-muted); }
.rating-stars { display: flex; justify-content: center; gap: 0.5rem; margin: 0.8rem 0; }
.star-btn { background: none; border: none; font-size: 1.6rem; color: var(--text-muted); cursor: pointer; transition: color 0.15s; }
.star-btn.selected { color: var(--warning); }