:root {
  --bg-dark: #0d1117;
  --card-bg: #161b22;
  --neon-blue: #00f0ff;
  --neon-green: #39ff14;
  --neon-yellow: #fff000;
  --text-main: #f0f6fc;
  --text-muted: #8b949e;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

html {
  width: 100%;
  min-height: 100%;
}

body {
  width: 100%;
  min-height: 100vh;
  background-color: var(--bg-dark);
  color: var(--text-main);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.container {
  width: 100%;
  max-width: 480px;
  background: var(--card-bg);
  padding: 30px;
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 240, 255, 0.1);
  text-align: center;
}

h1 {
  color: var(--text-main);
  font-size: 1.8rem;
  margin-bottom: 5px;
}

h1 span {
  color: var(--neon-blue);
}

.tagline {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 30px;
}

.status-box {
  background: rgba(0, 240, 255, 0.05);
  border: 1px dashed var(--neon-blue);
  border-radius: 12px;
  padding: 15px;
  margin-bottom: 25px;
}

.id-label {
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.my-id {
  color: var(--neon-yellow);
  font-size: 1.4rem;
  font-weight: bold;
  margin-top: 5px;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.pairing-label {
  margin-top: 15px;
}

#pairingCodeDisplay {
  color: var(--neon-yellow);
  font-size: 1.4rem;
  font-weight: bold;
  margin-top: 5px;
  letter-spacing: 3px;
  overflow-wrap: anywhere;
  word-break: break-word;
}

#pairingCodeInput {
  letter-spacing: 3px;
  font-weight: bold;
}
.auth-status {
  color: var(--neon-yellow);
  font-size: 0.85rem;
  font-weight: bold;
  margin-top: 10px;
}

.auth-status.authenticated {
  color: var(--neon-green);
}

.auth-status.failed {
  color: #ff4444;
}

.connect-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 25px;
}

input[type="text"] {
  width: 100%;
  background: #21262d;
  border: 1px solid #30363d;
  border-radius: 10px;
  color: var(--text-main);
  font-size: 1rem;
  min-height: 48px;
  outline: none;
  padding: 14px;
  text-align: center;
  transition:
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

input[type="text"]:focus {
  border-color: var(--neon-green);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.12);
}

button,
.file-label {
  min-height: 48px;
}

button {
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: bold;
  padding: 14px;
  transition:
    transform 0.1s ease,
    opacity 0.2s ease;
}

button:active {
  transform: scale(0.98);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.btn-connect {
  background: var(--neon-green);
  color: #000;
}

.btn-disconnect {
  background: #ff4444;
  color: #fff;
}

.transfer-section {
  display: none;
  background: rgba(57, 255, 20, 0.05);
  border: 1px solid var(--neon-green);
  border-radius: 12px;
  padding: 20px;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.connected-heading {
  color: var(--neon-green);
  font-size: 1rem;
  margin-bottom: 15px;
}

.file-label {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  background: var(--neon-yellow);
  border-radius: 10px;
  color: #000;
  cursor: pointer;
  font-weight: bold;
  margin-bottom: 15px;
  padding: 14px;
  text-align: center;
}

input[type="file"] {
  display: none;
}

#transferStatus {
  color: var(--text-main);
  font-size: 0.9rem;
  margin-bottom: 10px;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.progress-bar {
  display: none;
  width: 100%;
  height: 8px;
  background: #21262d;
  border-radius: 4px;
  margin-top: 10px;
  overflow: hidden;
}

.progress-fill {
  width: 0%;
  height: 100%;
  background: var(--neon-blue);
  transition: width 0.2s ease;
}

#progressText {
  min-height: 16px;
  color: var(--neon-blue);
  font-size: 0.8rem;
  font-weight: bold;
  margin-top: 8px;
}

.btn-cancel {
  display: none;
  width: 100%;
  background: #21262d;
  border: 1px solid #30363d;
  color: var(--text-main);
  margin-top: 12px;
}

.btn-cancel:hover {
  opacity: 0.85;
}

#log {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 15px;
  overflow-wrap: anywhere;
  word-break: break-word;
}

#downloadLink {
  display: none;
  width: 100%;
  background: var(--neon-blue);
  border-radius: 10px;
  color: #000;
  font-weight: bold;
  margin-top: 15px;
  padding: 12px;
  text-decoration: none;
}

#downloadLink:hover {
  opacity: 0.9;
}

@media (max-width: 600px) {
  body {
    align-items: flex-start;
    padding: 12px;
  }

  .container {
    margin: 12px 0;
    padding: 22px;
  }

  h1 {
    font-size: 1.6rem;
  }

  .tagline {
    margin-bottom: 22px;
  }

  .status-box {
    margin-bottom: 20px;
  }
}

@media (max-width: 400px) {
  body {
    padding: 6px;
  }

  .container {
    margin: 6px 0;
    padding: 16px;
    border-radius: 14px;
  }

  h1 {
    font-size: 1.4rem;
  }

  .my-id {
    font-size: 1.15rem;
  }

  .transfer-section {
    padding: 15px;
  }

  input[type="text"],
  button,
  .file-label {
    font-size: 0.95rem;
    padding: 12px;
  }
}

@media (max-height: 600px) and (orientation: landscape) {
  body {
    align-items: flex-start;
  }

  .container {
    margin: 10px 0;
  }
}