/* Base reset and typography */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
               Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

:root {
  --bg-start: #0f2027;
  --bg-end:   #2c5364;
  --card-bg:  rgba(16, 28, 40, 0.72);
  --ring:     rgba(255, 255, 255, 0.12);
  --text:     #ffffff;
  --error:    #ff8a8a;
}

body {
  width: 100vw;
  height: 100vh;
  background: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-end) 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--text);
}

/* Centering container */
.download-container {
  width: 100%;
  max-width: 420px;
  padding: 0 16px;
}

/* Card */
.download-box {
  position: relative;
  background-color: var(--card-bg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-radius: 18px;
  padding: 32px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  outline: 1px solid var(--ring);
}

/* Icon */
.download-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.18), rgba(255,255,255,0.08));
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Title */
h1 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.2px;
  margin-bottom: 14px;
}

/* Status text */
#loader-text {
  font-size: 16px;
  opacity: 0.92;
  margin-bottom: 10px;
}

/* Error text */
.error-text {
  font-size: 14px;
  color: var(--error);
  min-height: 1.2em; /* to prevent layout shift */
}

/* Hover lift (progressive enhancement) */
@media (hover:hover) and (pointer:fine) {
  .download-box {
    transition: transform 200ms ease, box-shadow 200ms ease;
  }
  .download-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.38);
  }
}

/* Responsive */
@media (max-width: 480px) {
  .download-box {
    padding: 22px;
  }
  h1 {
    font-size: 20px;
  }
  #loader-text, .error-text {
    font-size: 14px;
  }
  .download-icon {
    width: 44px;
    height: 44px;
    margin-bottom: 16px;
  }
}