:root {
  --bg: #0f1117;
  --bg-card: #1a1d27;
  --bg-input: #252836;
  --border: #2e3348;
  --text: #e8eaf0;
  --text-muted: #8b92a8;
  --primary: #5865f2;
  --primary-hover: #4752c4;
  --success: #3ba55d;
  --warning: #faa61a;
  --danger: #ed4245;
  --radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

/* Login */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at top, #1a1d3a 0%, var(--bg) 70%);
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  width: 100%;
  max-width: 400px;
  text-align: center;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.logo-icon {
  font-size: 1.5rem;
  color: var(--primary);
}

.logo h1, .header-left h1 {
  font-size: 1.4rem;
  font-weight: 700;
}

.subtitle {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Container */
.container {
  max-width: 720px;
  margin: 2rem auto;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.card h2 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.hint {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

/* Forms */
label {
  display: block;
  text-align: left;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

input[type="password"],
input[type="url"],
select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

input:focus, select:focus {
  border-color: var(--primary);
}

select {
  margin-bottom: 0.75rem;
  cursor: pointer;
}

select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.input-group {
  display: flex;
  gap: 0.5rem;
}

.input-group input {
  flex: 1;
}

/* Buttons */
.btn {
  padding: 0.65rem 1.25rem;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--border);
}

.btn-warning {
  background: var(--warning);
  color: #1a1a1a;
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-input);
  color: var(--text);
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 0.85rem 2rem;
  font-size: 1.05rem;
}

.login-card .btn-primary {
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.85rem;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tab {
  flex: 1;
  padding: 0.6rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.tab.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Upload zone */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--primary);
  background: rgba(88, 101, 242, 0.05);
}

.upload-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 0.5rem;
}

.small {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Progress */
.progress-area {
  margin-top: 1rem;
}

.progress-bar {
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 4px;
  width: 0%;
  transition: width 0.3s;
}

#uploadStatus, #downloadStatus {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Source ready */
.source-ready {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: rgba(59, 165, 93, 0.1);
  border: 1px solid var(--success);
  border-radius: 8px;
  color: var(--success);
  font-weight: 600;
}

.check {
  font-size: 1.2rem;
}

/* Controls */
.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.stream-status {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-input);
  border-radius: 8px;
}

.status-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
}

.status-indicator.playing {
  background: var(--success);
  animation: pulse 1.5s infinite;
}

.status-indicator.paused {
  background: var(--warning);
}

.status-indicator.connecting {
  background: var(--primary);
  animation: pulse 0.8s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Badge */
.badge {
  padding: 0.3rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-online {
  background: rgba(59, 165, 93, 0.15);
  color: var(--success);
}

.badge-offline {
  background: rgba(237, 66, 69, 0.15);
  color: var(--danger);
}

/* Utils */
.hidden {
  display: none !important;
}

.error-msg {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

@media (max-width: 600px) {
  .header {
    padding: 1rem;
  }
  .controls-row {
    flex-direction: column;
  }
  .controls-row .btn {
    width: 100%;
  }
  .input-group {
    flex-direction: column;
  }
}