/* ===== CSS Custom Properties ===== */
:root {
  /* Backgrounds */
  --bg-primary: #f5f6fa;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f1f5;
  --bg-input: #f8f9fc;
  --bg-overlay: rgba(0, 0, 0, 0.3);

  /* Accents — Indian tricolor inspired */
  --saffron: #e8820e;
  --saffron-glow: rgba(232, 130, 14, 0.1);
  --saffron-dark: #c96e08;
  --green: #0e8a1e;
  --green-glow: rgba(14, 138, 30, 0.08);
  --white-accent: #ffffff;

  /* Text */
  --text-primary: #1a1d26;
  --text-secondary: #5c6370;
  --text-muted: #9ca3af;
  --text-accent: var(--saffron);

  /* Borders */
  --border: #e2e5ec;
  --border-hover: #c8cdd6;
  --border-accent: var(--saffron);

  /* Misc */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.08), 0 8px 40px rgba(0, 0, 0, 0.06);
  --transition: 0.2s ease;

  /* Fonts */
  --font-ui: 'Inter', -apple-system, sans-serif;
  --font-devanagari: 'Noto Sans Devanagari', sans-serif;
}

/* ===== Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-ui);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ===== Header ===== */
#app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--saffron), #e67e22);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 153, 51, 0.3);
}

.header-text h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--text-primary);
}

.header-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--saffron);
  background: var(--saffron-glow);
  padding: 2px 10px;
  border-radius: 20px;
  margin-top: 2px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Icon buttons */
.icon-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

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

.icon-btn-sm {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.icon-btn-sm:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  background: var(--saffron);
  color: #000;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
}

/* ===== Main Layout ===== */
#app-main {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px 28px 60px;
}

.main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.col-left, .col-right {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ===== Cards ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition);
}

.card:hover {
  border-color: var(--border-hover);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}

.card-header h2 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

/* ===== Template Grid ===== */
.template-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 16px 18px;
}

.template-card {
  position: relative;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.template-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-1px);
}

.template-card.active {
  border-color: var(--saffron);
  background: var(--saffron-glow);
  box-shadow: 0 0 0 1px var(--saffron), 0 4px 12px rgba(232, 130, 14, 0.1);
}

.template-card .template-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.3;
}

.template-card .template-desc {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.lang-badge {
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--green-glow);
  color: #4caf50;
  white-space: nowrap;
}

.lang-badge.hindi {
  background: var(--saffron-glow);
  color: #c96e08;
}

.lang-badge.marathi {
  background: var(--green-glow);
  color: #0e8a1e;
}

.template-card .lang-badge {
  position: absolute;
  top: 12px;
  right: 12px;
}

/* ===== Tags ===== */
.tag {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

/* ===== Dynamic Form ===== */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 18px 22px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group select {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-primary);
  font-family: var(--font-devanagari);
  font-size: 15px;
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--saffron);
  box-shadow: 0 0 0 3px var(--saffron-glow);
}

.form-group select {
  font-family: var(--font-ui);
  font-size: 13px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%238b95a8' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.input-with-action {
  display: flex;
  gap: 6px;
  align-items: center;
}

.input-with-action input {
  flex: 1;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 14px;
  transition: border-color var(--transition);
  outline: none;
}

.input-with-action input:focus {
  border-color: var(--saffron);
  box-shadow: 0 0 0 3px var(--saffron-glow);
}

/* ===== Collapsible Advanced Section ===== */
.collapsible-trigger {
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  border-bottom: none;
}

.collapsible-trigger .chevron {
  transition: transform 0.3s ease;
  color: var(--text-secondary);
}

.collapsible.open .collapsible-trigger .chevron {
  transform: rotate(180deg);
}

.collapsible-body {
  padding: 18px 22px;
  border-top: 1px solid var(--border);
}

/* Sliders */
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 20px;
}

.slider-row label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.slider-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.slider-control {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
}

.slider-control input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
}

.slider-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--saffron);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(255, 153, 51, 0.3);
  transition: transform 0.15s ease;
}

.slider-control input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider-val {
  font-size: 13px;
  font-weight: 600;
  color: var(--saffron);
  min-width: 36px;
  text-align: right;
}

.settings-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ===== Live Preview & Script Editor ===== */
.preview-card {
  position: static;
}

.card-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.preview-body {
  padding: 24px;
  font-family: var(--font-devanagari);
  font-size: 17px;
  line-height: 2;
  color: var(--text-primary);
}

.visual-preview {
  min-height: 80px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.script-edit-label {
  display: block;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.script-textarea {
  width: 100%;
  min-height: 100px;
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-primary);
  font-family: var(--font-devanagari);
  font-size: 15px;
  line-height: 1.8;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition);
}

.script-textarea:focus {
  border-color: var(--saffron);
  box-shadow: 0 0 0 3px var(--saffron-glow);
}

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

.preview-placeholder {
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 14px;
  font-style: italic;
}

.pause-pill {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 10px;
  font-family: var(--font-ui);
  font-weight: 600;
  color: var(--green);
  background: var(--green-glow);
  padding: 2px 8px;
  border-radius: 10px;
  vertical-align: middle;
  margin: 0 2px;
  letter-spacing: 0;
}

/* ===== Generate Button ===== */
#generate-section {
  padding: 22px;
}

.generate-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 18px 24px;
  border: none;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--saffron), #e67e22);
  color: #fff;
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(255, 153, 51, 0.3);
  letter-spacing: 0.3px;
}

.generate-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 153, 51, 0.4);
}

.generate-button:active:not(:disabled) {
  transform: translateY(0);
}

.generate-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
}

/* ===== Loading ===== */
.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 32px 22px;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--saffron);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-container p {
  font-size: 14px;
  color: var(--text-secondary);
  animation: pulse-text 1.5s ease-in-out infinite;
}

@keyframes pulse-text {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* ===== Audio Result ===== */
.audio-result {
  padding: 22px;
}

.audio-player-wrapper {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 14px;
}

.audio-player-wrapper audio {
  width: 100%;
  height: 44px;
  border-radius: 8px;
}

.audio-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.audio-meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-muted);
}

.audio-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.audio-meta .meta-value {
  color: var(--text-secondary);
  font-weight: 600;
}

/* ===== Error ===== */
.error-container {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 22px;
  margin: 0 22px 22px;
  border-radius: var(--radius-md);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.error-container svg {
  color: #ef4444;
  flex-shrink: 0;
}

.error-container p {
  font-size: 13px;
  color: #dc2626;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: none;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--saffron);
  color: #000;
}

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

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

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

.btn-accent {
  background: linear-gradient(135deg, var(--saffron), #e67e22);
  color: #fff;
}

.btn-accent:hover {
  box-shadow: 0 4px 16px rgba(255, 153, 51, 0.3);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 12px;
}

/* ===== Settings Modal ===== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(6px);
}

.modal-content {
  position: relative;
  width: 480px;
  max-width: 90vw;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  animation: modal-in 0.25s ease;
}

@keyframes modal-in {
  from { transform: scale(0.95) translateY(10px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  font-size: 16px;
  font-weight: 600;
}

.modal-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.settings-actions {
  display: flex;
  gap: 10px;
}

.status-message {
  font-size: 13px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
}

.status-message.success {
  background: var(--green-glow);
  color: #0e8a1e;
  border: 1px solid rgba(14, 138, 30, 0.2);
}

.status-message.error {
  background: rgba(239, 68, 68, 0.08);
  color: #dc2626;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ===== History Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: 400px;
  max-width: 90vw;
  height: 100vh;
  z-index: 150;
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  animation: slide-in 0.3s ease;
}

@keyframes slide-in {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sidebar-header h2 {
  font-size: 16px;
  font-weight: 600;
}

.sidebar-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 24px;
  gap: 8px;
}

.empty-state p {
  font-size: 14px;
  color: var(--text-secondary);
}

.empty-state span {
  font-size: 12px;
  color: var(--text-muted);
}

/* History item */
.history-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  margin-bottom: 8px;
  background: var(--bg-secondary);
  transition: all var(--transition);
}

.history-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.history-info {
  flex: 1;
  min-width: 0;
}

.history-info .history-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  font-family: var(--font-devanagari);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-info .history-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.history-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

/* ===== Warning Banner ===== */
.warning-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  margin-bottom: 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 153, 51, 0.08);
  border: 1px solid rgba(255, 153, 51, 0.2);
  color: var(--saffron);
  animation: fade-in 0.4s ease;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.warning-banner svg {
  flex-shrink: 0;
}

.warning-banner span {
  flex: 1;
  font-size: 13px;
}

.warning-banner strong {
  color: #ffb366;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .main-grid {
    grid-template-columns: 1fr;
  }

  .preview-card {
    position: static;
  }

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

@media (max-width: 640px) {
  #app-header {
    padding: 10px 16px;
  }

  #app-main {
    padding: 16px;
  }

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

  .settings-row {
    grid-template-columns: 1fr;
  }

  .generate-button {
    margin: 16px;
    width: calc(100% - 32px);
  }
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

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

::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}