:root {
  --primary-color: #0b8a7a;
  --secondary-color: #0b6b62;
  --accent-color: #4fc4c9;
  --text-color: #333333;
  --text-light: #ffffff;
  --background-color: #ffffff;
  --background-dark: #f5f5f5;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --radius: 12px;
  --tech-base-1: #eef3ff;
  --tech-base-2: #ffffff;
  --tech-grid: rgba(17, 158, 142, 0.12);
  --tech-dot: rgba(11, 138, 122, 0.2);
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary-color: #1aa997;
    --secondary-color: #0b8a7a;
    --accent-color: #51cbd3;
    --text-color: #f5f5f5;
    --text-light: #f5f5f5;
    --background-color: #121212;
    --background-dark: #1e1e1e;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --tech-base-1: #0b0f16;
    --tech-base-2: #0a0e15;
    --tech-grid: rgba(79, 196, 201, 0.18);
    --tech-dot: rgba(26, 169, 151, 0.32);
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  display: flex;
  flex-direction: column;
}

.site-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    var(--tech-base-1) 0%,
    var(--tech-base-2) 55%,
    var(--tech-base-1) 100%
  );
}

.site-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at center, var(--tech-dot) 1px, transparent 1.6px) 0 0 / 36px 36px,
    linear-gradient(to right, var(--tech-grid) 1px, transparent 1px) 0 0 / 54px 54px,
    linear-gradient(to bottom, var(--tech-grid) 1px, transparent 1px) 0 0 / 54px 54px;
  opacity: 0.95;
}

.container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem 4rem;
}

.player-card {
  width: 100%;
  max-width: 480px;
  background: var(--background-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem 1.5rem;
  border: 1px solid rgba(11, 138, 122, 0.15);
}

h1 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 0.25rem;
}

.subtitle {
  font-size: 1rem;
  color: var(--text-color);
  opacity: 0.75;
  margin-bottom: 0.5rem;
}

.speaker {
  font-size: 0.9375rem;
  color: var(--secondary-color);
  font-style: italic;
  margin-bottom: 1.5rem;
}

audio {
  width: 100%;
  border-radius: 8px;
}

audio::-webkit-media-controls-panel {
  background: var(--background-dark);
}

.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  text-align: center;
  padding: 1rem;
  font-size: 0.875rem;
  color: var(--text-color);
  opacity: 0.7;
  background: linear-gradient(transparent, var(--background-color) 40%);
}

.footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.footer a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

@media (max-width: 480px) {
  .player-card {
    padding: 1.5rem 1rem;
  }

  h1 {
    font-size: 1.25rem;
  }
}