/* ============================
   CSS RESET & BASE STYLES
   ============================ */

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

:root {
  /* Color palette */
  --primary-color: #1976d2;
  --primary-dark: #1565c0;
  --primary-light: #42a5f5;
  --secondary-color: #424242;
  --accent-color: #ff5722;
  --success-color: #4caf50;
  --error-color: #f44336;
  --warning-color: #ff9800;

  /* Neutral colors */
  --bg-color: #f5f5f5;
  --surface-color: #ffffff;
  --text-primary: #212121;
  --text-secondary: #757575;
  --border-color: #e0e0e0;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ============================
   LAYOUT CONTAINERS
   ============================ */

.view {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: var(--spacing-md);
}

.container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.header h1 {
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================
   BUTTONS
   ============================ */

.btn {
  display: inline-block;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: inherit;
  outline: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: #616161;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-record {
  background-color: var(--success-color);
  color: white;
  padding: 16px 32px;
  font-size: 1.1rem;
}

.btn-record:hover:not(:disabled) {
  background-color: #43a047;
  transform: scale(1.05);
}

.btn-stop {
  background-color: var(--error-color);
  color: white;
  padding: 16px 32px;
  font-size: 1.1rem;
}

.btn-stop:hover:not(:disabled) {
  background-color: #e53935;
  transform: scale(1.05);
}

.view-btn {
  background-color: var(--primary-color);
  color: white;
  padding: 8px 16px;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
}

.view-btn:hover {
  background-color: var(--primary-dark);
}

/* ============================
   LOGIN VIEW
   ============================ */

#loginView {
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.login-box {
  background-color: var(--surface-color);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
}

.login-box h1 {
  font-size: 1.8rem;
  margin-bottom: var(--spacing-sm);
  text-align: center;
  color: var(--primary-color);
}

.subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  font-size: 0.9rem;
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
  font-family: inherit;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.login-box .btn-primary {
  width: 100%;
  margin-top: var(--spacing-md);
  padding: 14px;
}

.help-text {
  text-align: center;
  margin-top: var(--spacing-lg);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ============================
   MENU VIEW
   ============================ */

.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.menu-card {
  background-color: var(--surface-color);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-base);
  text-align: center;
}

.menu-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.menu-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
}

.menu-card h2 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.menu-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============================
   RECORD VIEW
   ============================ */

.record-container {
  background-color: var(--surface-color);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.record-status {
  margin-bottom: var(--spacing-xl);
}

.record-icon-wrapper {
  margin-bottom: var(--spacing-lg);
}

.record-icon {
  font-size: 6rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

.status-text {
  font-size: 1.2rem;
  color: var(--text-secondary);
  min-height: 1.5em;
}

.record-controls {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

/* ============================
   OFFLINE QUEUE INDICATOR
   ============================ */

.queue-indicator {
  background-color: #fff3cd;
  border: 2px solid #ffc107;
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 600;
  color: #856404;
  animation: pulse 2s ease-in-out infinite;
}

.queue-icon {
  font-size: 1.5rem;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* ============================
   RECORDINGS LIST
   ============================ */

.recordings-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.recording-item {
  background-color: var(--surface-color);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  transition: all var(--transition-fast);
}

.recording-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.recording-info {
  flex: 1;
}

.recording-filename {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  font-size: 1.05rem;
}

.recording-meta {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  align-items: center;
}

.recording-timestamp {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.recording-status {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
}

.status-uploading {
  background-color: #fff3e0;
  color: var(--warning-color);
}

.status-uploaded {
  background-color: #e3f2fd;
  color: var(--primary-color);
}

.status-processing {
  background-color: #f3e5f5;
  color: #9c27b0;
}

.status-completed {
  background-color: #e8f5e9;
  color: var(--success-color);
}

.status-error {
  background-color: #ffebee;
  color: var(--error-color);
}

.status-unknown {
  background-color: var(--border-color);
  color: var(--text-secondary);
}

.recording-actions {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.retry-btn {
  background-color: var(--warning-color);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 4px;
}

.retry-btn:hover {
  background-color: #f57c00;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.retry-btn:active {
  transform: translateY(0);
}

.loading,
.no-recordings,
.error {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.error {
  color: var(--error-color);
}

/* ============================
   MODAL (Recording Detail)
   ============================ */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  padding: var(--spacing-md);
  animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal-content {
  background-color: var(--surface-color);
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp var(--transition-base);
}

@keyframes slideUp {
  from {
    transform: translateY(50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  font-size: 1.5rem;
  color: var(--text-primary);
}

.close-btn {
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.close-btn:hover {
  background-color: var(--border-color);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-lg);
}

.audio-player {
  width: 100%;
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius-md);
}

.transcription-boxes {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.transcription-box {
  background-color: var(--bg-color);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 2px solid var(--border-color);
}

.transcription-box.disabled {
  opacity: 0.6;
}

.transcription-box h3 {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.transcription-box textarea {
  width: 100%;
  min-height: 150px;
  padding: var(--spacing-md);
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  resize: vertical;
  line-height: 1.6;
}

.transcription-box textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.transcription-box textarea[readonly] {
  background-color: #fafafa;
  cursor: default;
}

.transcription-box button {
  margin-top: var(--spacing-md);
  background-color: var(--primary-color);
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.95rem;
  transition: all var(--transition-base);
}

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

/* ============================
   GLOBAL LOADER
   ============================ */

.global-loader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  color: white;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loader-text {
  margin-top: var(--spacing-lg);
  font-size: 1.1rem;
}

/* ============================
   TOAST NOTIFICATIONS
   ============================ */

.toast {
  position: fixed;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--secondary-color);
  color: white;
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 10000;
  transition: bottom var(--transition-base);
  max-width: 90%;
  text-align: center;
}

.toast.show {
  bottom: 24px;
}

.toast-error {
  background-color: var(--error-color);
}

.toast-success {
  background-color: var(--success-color);
}

.toast-warning {
  background-color: var(--warning-color);
}

.toast-info {
  background-color: #3498db; /* Blue for info messages */
}

/* ============================
   RESPONSIVE DESIGN
   ============================ */

@media (max-width: 768px) {
  .container {
    padding: var(--spacing-md);
  }

  .header h1 {
    font-size: 1.5rem;
  }

  .menu-grid {
    grid-template-columns: 1fr;
  }

  .menu-icon {
    font-size: 3rem;
  }

  .menu-card h2 {
    font-size: 1.3rem;
  }

  .record-icon {
    font-size: 4rem;
  }

  .recording-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .view-btn {
    align-self: stretch;
  }

  .modal-content {
    max-height: 95vh;
    margin: var(--spacing-sm);
  }

  .transcription-box textarea {
    min-height: 120px;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.95rem;
  }

  .btn-record,
  .btn-stop {
    padding: 14px 28px;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .view {
    padding: var(--spacing-sm);
  }

  .login-box {
    padding: var(--spacing-lg);
  }

  .login-box h1 {
    font-size: 1.5rem;
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header .btn {
    width: 100%;
  }

  .record-controls {
    width: 100%;
  }

  .record-controls .btn {
    width: 100%;
  }
}

/* ============================
   PRINT STYLES
   ============================ */

@media print {
  .btn,
  .header .btn,
  .close-btn,
  .audio-player {
    display: none;
  }

  .modal-overlay {
    position: static;
    background: none;
  }

  .modal-content {
    box-shadow: none;
    max-height: none;
  }

  .transcription-box {
    page-break-inside: avoid;
  }
}

/* ============================
   ACCESSIBILITY
   ============================ */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}