/* QWBP Demo Styles */

:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-success: #16a34a;
  --color-error: #dc2626;
  --color-warning: #d97706;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

.hidden {
  display: none !important;
}

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

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

@media (max-width: 640px) {
  .container {
    padding: 12px;
  }
}

/* Header */
header {
  text-align: center;
  margin-bottom: 24px;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.subtitle {
  color: var(--color-text-muted);
  font-size: 1rem;
}

/* Status indicator */
.status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  font-weight: 500;
  background: var(--color-surface);
  box-shadow: var(--shadow);
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.status-idle .status-dot {
  background: var(--color-text-muted);
  animation: none;
}

.status-gathering .status-dot,
.status-displaying .status-dot,
.status-scanned-one .status-dot {
  background: var(--color-warning);
}

.status-connecting .status-dot {
  background: var(--color-primary);
}

.status-connected .status-dot {
  background: var(--color-success);
  animation: none;
}

.status-failed .status-dot,
.status-error .status-dot {
  background: var(--color-error);
  animation: none;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Main content */
main {
  flex: 1;
}

.section {
  display: none;
  animation: fadeIn 0.3s ease;
}

.section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Start section */
#section-start {
  text-align: center;
  padding: 60px 20px;
}

.instruction {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
  background: var(--color-bg);
}

/* QR section */
.qr-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

@media (max-width: 640px) {
  .qr-container {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

.qr-panel {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  text-align: center;
  overflow: hidden;
}

@media (max-width: 640px) {
  .qr-panel {
    padding: 16px;
  }
}

.qr-panel h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.qr-display {
  width: 100%;
  max-width: 200px;
  aspect-ratio: 1;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: 8px;
  overflow: hidden;
}

.qr-display canvas {
  width: 100% !important;
  height: 100% !important;
  max-width: 200px;
  max-height: 200px;
}

.qr-placeholder {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.hint {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Scanner */
.scanner-container {
  width: 100%;
  max-width: 200px;
  aspect-ratio: 1;
  margin: 0 auto 16px;
  position: relative;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
}

#scanner-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.scanner-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.scanner-frame {
  width: 160px;
  height: 160px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 8px;
}

.scan-status {
  text-align: center;
  padding: 12px;
  border-radius: var(--radius);
  font-size: 0.875rem;
}

.scan-status.success {
  background: #dcfce7;
  color: #166534;
}

.scan-status.waiting {
  background: #fef3c7;
  color: #92400e;
}

/* Connected section */
.connected-header {
  text-align: center;
  margin-bottom: 32px;
}

.connected-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 8px;
}

.connected-header h2 {
  color: var(--color-success);
  margin-bottom: 4px;
}

.connected-header p {
  color: var(--color-text-muted);
}

/* Chat */
.chat-container {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 24px;
  overflow: hidden;
}

.chat-messages {
  height: 300px;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chat-messages:empty::after {
  content: "No messages yet. Say hello!";
  color: var(--color-text-muted);
  font-size: 0.875rem;
  text-align: center;
  margin: auto;
}

.chat-message {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 0.9375rem;
  line-height: 1.4;
  word-wrap: break-word;
}

.chat-message.sent {
  align-self: flex-end;
  background: var(--color-primary);
  color: white;
  border-bottom-right-radius: 4px;
}

.chat-message.received {
  align-self: flex-start;
  background: var(--color-bg);
  color: var(--color-text);
  border-bottom-left-radius: 4px;
}

.chat-input {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.chat-input input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 0.9375rem;
  outline: none;
  transition: border-color 0.2s;
}

.chat-input input:focus {
  border-color: var(--color-primary);
}

.chat-input button {
  padding: 10px 20px;
  border-radius: 20px;
}

/* Error section */
.error-content {
  text-align: center;
  padding: 60px 20px;
}

.error-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 16px;
}

.error-content h2 {
  color: var(--color-error);
  margin-bottom: 8px;
}

#error-message {
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

/* Footer */
footer {
  text-align: center;
  padding: 24px;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

footer a {
  color: var(--color-primary);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Transfer progress */
.transfer-progress {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

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

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

/* SAS Display */
.sas-display {
  margin-top: 16px;
  padding: 12px 20px;
  background: var(--color-bg);
  border-radius: 8px;
  display: inline-block;
}

.sas-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 4px;
}

.sas-code {
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-text);
}

.sas-hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  display: block;
  margin-top: 4px;
}

/* Protocol Log Panel */
.protocol-log {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-top: 24px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.protocol-log.collapsed .log-content {
  max-height: 0;
  padding: 0;
  overflow: hidden;
}

.protocol-log.collapsed .log-stats {
  display: none;
}

.log-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  color: white;
}

.log-header h3 {
  font-size: 0.875rem;
  font-weight: 600;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.log-header h3::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.log-controls {
  display: flex;
  gap: 8px;
}

.btn-icon {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: white;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.2);
}

.log-content {
  max-height: 300px;
  overflow-y: auto;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.log-entries {
  padding: 12px;
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
  font-size: 0.75rem;
  line-height: 1.6;
}

.log-entry {
  display: flex;
  gap: 12px;
  padding: 6px 8px;
  border-radius: 4px;
  margin-bottom: 4px;
  animation: slideIn 0.2s ease;
}

.log-entry:hover {
  background: var(--color-bg);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.log-timestamp {
  color: var(--color-text-muted);
  white-space: nowrap;
  min-width: 70px;
}

.log-level {
  font-weight: 600;
  min-width: 50px;
  text-transform: uppercase;
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 3px;
  text-align: center;
  align-self: flex-start;
}

.log-level.info {
  background: #dbeafe;
  color: #1e40af;
}

.log-level.success {
  background: #dcfce7;
  color: #166534;
}

.log-level.warning {
  background: #fef3c7;
  color: #92400e;
}

.log-level.error {
  background: #fee2e2;
  color: #991b1b;
}

.log-level.data {
  background: #f3e8ff;
  color: #6b21a8;
}

.log-level.crypto {
  background: #ecfdf5;
  color: #065f46;
}

.log-level.ice {
  background: #e0f2fe;
  color: #0369a1;
}

.log-level.sdp {
  background: #fdf4ff;
  color: #86198f;
}

.log-level.qr {
  background: #fef9c3;
  color: #854d0e;
}

.log-message {
  flex: 1;
  word-break: break-word;
}

.log-message code {
  background: var(--color-bg);
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 0.7rem;
}

.log-message .hex-data {
  color: #0891b2;
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
}

.log-message .ip-address {
  color: #7c3aed;
  font-weight: 500;
}

.log-message .highlight {
  background: #fef08a;
  padding: 0 2px;
  border-radius: 2px;
}

.log-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--color-bg);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
}

/* Empty log state */
.log-entries:empty::after {
  content: "Click 'Start Connection' to begin protocol logging...";
  display: block;
  text-align: center;
  padding: 24px;
  color: var(--color-text-muted);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-style: italic;
}

/* QR Info display */
.qr-info {
  margin-top: 12px;
  padding: 8px 12px;
  background: var(--color-bg);
  border-radius: 6px;
  font-size: 0.75rem;
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
  color: var(--color-text-muted);
  text-align: left;
}

.qr-info:empty {
  display: none;
}

.qr-info-row {
  display: flex;
  justify-content: space-between;
  padding: 2px 0;
}

.qr-info-label {
  color: var(--color-text-muted);
}

.qr-info-value {
  color: var(--color-text);
  font-weight: 500;
}

/* Scrollbar styling for log */
.log-content::-webkit-scrollbar {
  width: 6px;
}

.log-content::-webkit-scrollbar-track {
  background: var(--color-bg);
}

.log-content::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.log-content::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}