/* Dezibel-Messer — eigenes Design: Mess-Dunkel + Neon-Pegel, Instrument-Look */

:root {
  --bg: #0f172a;
  --bg-grad-1: #0f172a;
  --bg-grad-2: #0b1326;
  --panel: #15203a;
  --panel-2: #1b2a48;
  --panel-border: #243758;
  --text: #e8eefc;
  --text-dim: #9fb0d0;
  --text-faint: #6b7da0;
  --accent: #38bdf8;
  --green: #22e07a;
  --yellow: #facc15;
  --red: #f43f5e;
  --green-soft: rgba(34, 224, 122, 0.18);
  --shadow: 0 14px 40px rgba(0, 0, 0, 0.45);
  --focus: #38bdf8;
  --radius: 18px;
  --radius-sm: 12px;
  --bar-track: #0b1326;
}

[data-theme="light"] {
  --bg: #eef2fb;
  --bg-grad-1: #f4f7ff;
  --bg-grad-2: #e4ebfa;
  --panel: #ffffff;
  --panel-2: #f1f5ff;
  --panel-border: #d4ddf0;
  --text: #14213d;
  --text-dim: #4a5878;
  --text-faint: #7d8aa8;
  --accent: #0284c7;
  --green: #15a85a;
  --yellow: #d99e00;
  --red: #e11d48;
  --green-soft: rgba(21, 168, 90, 0.14);
  --shadow: 0 12px 30px rgba(20, 33, 61, 0.12);
  --focus: #0284c7;
  --bar-track: #dde5f4;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 600px at 50% -10%, var(--bg-grad-1), var(--bg-grad-2));
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #051124;
  padding: 10px 14px;
  border-radius: 0 0 10px 0;
  z-index: 50;
  font-weight: 700;
}
.skip-link:focus { left: 0; }

/* Header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px clamp(14px, 4vw, 28px);
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border-radius: 13px;
  color: var(--green);
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--panel-border);
  box-shadow: inset 0 0 16px rgba(34, 224, 122, 0.15);
}
.brand-text h1 {
  margin: 0;
  font-size: clamp(1.15rem, 4vw, 1.5rem);
  letter-spacing: 0.3px;
}
.brand-sub {
  margin: 2px 0 0;
  font-size: 0.8rem;
  color: var(--text-dim);
}
.header-actions { display: flex; gap: 8px; }

.btn-icon {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
}
.btn-icon:hover { background: var(--panel-2); }
.btn-icon:active { transform: scale(0.96); }
.ic-sun { display: none; }
[data-theme="light"] .ic-moon { display: none; }
[data-theme="light"] .ic-sun { display: block; }

/* Main layout */
main {
  flex: 1;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 6px clamp(14px, 4vw, 28px) 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(16px, 4vw, 24px);
}

/* Meter panel */
.meter-panel { text-align: center; }
.meter-display { margin-bottom: 18px; }
.db-readout {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}
.db-value {
  font-size: clamp(3.4rem, 18vw, 6rem);
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -1px;
  color: var(--green);
  text-shadow: 0 0 26px var(--green-soft);
  transition: color 0.2s ease, text-shadow 0.2s ease;
}
.db-value.lvl-green { color: var(--green); text-shadow: 0 0 28px rgba(34, 224, 122, 0.35); }
.db-value.lvl-yellow { color: var(--yellow); text-shadow: 0 0 28px rgba(250, 204, 21, 0.35); }
.db-value.lvl-red { color: var(--red); text-shadow: 0 0 30px rgba(244, 63, 94, 0.4); }
.db-unit {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dim);
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
}
.db-rel { font-size: 0.7rem; color: var(--text-faint); font-weight: 600; }
.level-label {
  margin-top: 10px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* Pegelbalken */
.bar-wrap {
  position: relative;
  height: 22px;
  border-radius: 999px;
  background: var(--bar-track);
  border: 1px solid var(--panel-border);
  overflow: hidden;
  margin-bottom: 16px;
}
.level-bar {
  position: absolute;
  inset: 0 auto 0 0;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--green) 0%, var(--green) 45%, var(--yellow) 70%, var(--red) 100%);
  transition: width 0.12s linear;
}
.bar-ticks {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 18%;
  pointer-events: none;
}
.bar-ticks span {
  width: 1px;
  height: 100%;
  background: rgba(255, 255, 255, 0.12);
}
[data-theme="light"] .bar-ticks span { background: rgba(0, 0, 0, 0.08); }

/* Graph */
.graph {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
  background: var(--bar-track);
  border: 1px solid var(--panel-border);
}

/* Controls */
.controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn-primary, .btn-secondary {
  flex: 1 1 auto;
  min-width: 140px;
  padding: 15px 18px;
  border-radius: 14px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.1s ease, filter 0.15s ease, background 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.btn-primary {
  background: linear-gradient(180deg, var(--green), #18b865);
  color: #04130a;
}
.btn-primary:hover { filter: brightness(1.06); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary.is-recording {
  background: linear-gradient(180deg, var(--red), #c81e3f);
  color: #fff;
}
.btn-dot {
  width: 11px; height: 11px;
  border-radius: 50%;
  background: #04130a;
  opacity: 0.65;
}
.is-recording .btn-dot {
  background: #fff;
  opacity: 1;
  animation: pulse 1.1s infinite ease-in-out;
}
.btn-secondary {
  background: var(--panel-2);
  color: var(--text);
  border-color: var(--panel-border);
}
.btn-secondary:hover { background: var(--panel); filter: brightness(1.04); }
.btn-secondary:active { transform: translateY(1px); }

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(0.6); opacity: 0.5; }
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.stat {
  background: var(--bar-track);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat-key {
  font-size: 0.72rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 700;
}
.stat-val {
  font-size: 1.05rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  overflow-wrap: anywhere;
}

/* Note */
.note-title {
  margin: 0 0 10px;
  font-size: 1.05rem;
}
.note-list {
  margin: 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.note-list strong { color: var(--text); }
.note-list em { color: var(--accent); font-style: normal; }

/* Footer */
.app-footer {
  text-align: center;
  padding: 12px 16px 22px;
  color: var(--text-faint);
  font-size: 0.78rem;
}

/* Toasts */
.toast-host {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 60;
  width: min(92vw, 420px);
  pointer-events: none;
}
.toast {
  background: var(--panel-2);
  border: 1px solid var(--panel-border);
  color: var(--text);
  border-radius: 12px;
  padding: 13px 16px;
  box-shadow: var(--shadow);
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  overflow-wrap: anywhere;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.t-error { border-color: var(--red); }
.toast.t-ok { border-color: var(--green); }

/* Modal */
.modal-root {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: grid;
  place-items: center;
  padding: 18px;
}
.modal-root[hidden] { display: none; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 10, 22, 0.66);
  backdrop-filter: blur(3px);
}
.modal-card {
  position: relative;
  width: min(94vw, 440px);
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}
.modal-title { margin: 0 0 10px; font-size: 1.15rem; }
.modal-body { margin: 0 0 18px; color: var(--text-dim); overflow-wrap: anywhere; }
.modal-actions { display: flex; justify-content: flex-end; }
.modal-actions .btn-primary { flex: 0 0 auto; min-width: 130px; }

/* Focus states */
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 8px;
}

/* Responsive */
@media (max-width: 560px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 360px) {
  .controls { flex-direction: column; }
  .btn-primary, .btn-secondary { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}