:root {
  --bg-color: #0B0F19; /* Obsidian dark */
  --panel-bg: #1E293B; /* Slate */
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --primary: #3B82F6; /* Electric Blue */
  --primary-hover: #2563EB;
  --danger: #EF4444; /* Red */
  --border-color: #334155;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.screen {
  display: none;
  width: 100%;
  height: 100%;
  flex-direction: column;
}

.screen.active {
  display: flex;
}

/* Login Screen */
#loginScreen {
  justify-content: center;
  align-items: center;
}

.login-card {
  background-color: var(--panel-bg);
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  text-align: center;
  max-width: 400px;
  width: 100%;
}

.login-card .logo-icon {
  margin: 0 auto 20px auto;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), #8B5CF6);
  border-radius: 12px;
}

.login-card h1 {
  margin-bottom: 8px;
}

.login-card p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 24px;
}

input {
  width: 100%;
  background-color: #0F172A;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 14px;
  border-radius: 8px;
  font-size: 16px;
  outline: none;
  margin-bottom: 16px;
  transition: border-color 0.2s;
}

input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.btn-primary {
  width: 100%;
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: white;
  border: none;
  padding: 14px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
  transition: all 0.2s;
}

.btn-primary:hover {
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
}

.error-msg {
  color: var(--danger);
  font-size: 14px;
  margin-top: 16px;
}
.error-msg.hidden {
  display: none;
}

/* App Screen */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, var(--primary), #8B5CF6);
  border-radius: 6px;
}

.btn-secondary {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.05);
  color: white;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px;
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

.mic-container {
  position: relative;
  width: 140px;
  height: 140px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 20px;
}

.mic-btn {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, #1E293B, #0F172A);
  color: var(--text-main);
  cursor: pointer;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  transition: all 0.2s ease;
}

.mic-btn svg { width: 40px; height: 40px; }

.mic-btn:hover { transform: translateY(-2px); }

.recording .mic-btn {
  background: linear-gradient(135deg, #7F1D1D, #450A0A);
  color: #FCA5A5;
}

.recording .glow-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 90px;
  height: 90px;
  margin-top: -45px;
  margin-left: -45px;
  border-radius: 50%;
  background-color: var(--danger);
  z-index: 1;
  animation: pulse-ring 2s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(2); opacity: 0; }
}

.status-container { margin-bottom: 40px; color: var(--text-muted); }
.recording .status-container { color: var(--danger); font-weight: 600; }

.transcript-box {
  width: 100%;
  height: 200px;
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  overflow-y: auto;
  font-size: 18px;
  line-height: 1.6;
}

.placeholder { color: var(--text-muted); font-style: italic; }