:root {
  --bg-main: #0b0e14;
  --bg-card: #151922;
  --bg-input: #1d2330;
  --border-color: #272f40;
  --border-active: #e6a100;
  --primary: #f59e0b;
  --primary-hover: #d97706;
  --gold: #ffd700;
  --gold-glow: rgba(245, 158, 11, 0.25);
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --success: #10b981;
  --radius: 12px;
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Reset y Prevent Horizontal Scroll */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-main);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-layout {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(14px, 2.5vw, 32px);
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

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

.cross-icon {
  font-size: 28px;
  color: var(--gold);
  background: rgba(255, 215, 0, 0.1);
  padding: 6px 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 215, 0, 0.2);
  flex-shrink: 0;
}

.brand h1 {
  font-size: clamp(20px, 4vw, 26px);
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.brand h1 span {
  color: var(--primary);
}

.tagline {
  font-size: clamp(11px, 2vw, 13px);
  color: var(--text-muted);
  margin-top: 2px;
}

.header-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  font-size: 11px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-free {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-hd {
  background: rgba(245, 158, 11, 0.15);
  color: var(--primary);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Mobile Quick Nav (Visible solo en pantallas pequeñas) */
.mobile-quick-nav {
  display: none;
  margin-bottom: 16px;
  text-align: center;
}

@media (max-width: 960px) {
  .mobile-quick-nav {
    display: block;
  }
}

/* Workspace Layout (Grid Responsive) */
.workspace {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(16px, 3vw, 32px);
  align-items: start;
}

/* Controls Panel */
.controls-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
  min-width: 0; /* Previene desbordamiento en grid */
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: clamp(14px, 2.5vw, 22px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  width: 100%;
}

.card-step {
  transition: border-color 0.2s;
}

.card-step:hover {
  border-color: #3a4459;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.step-num {
  background: var(--primary);
  color: #000;
  font-weight: 800;
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}

.card-header h2 {
  font-size: clamp(15px, 2.5vw, 17px);
  font-weight: 700;
  line-height: 1.25;
}

.card-header p {
  font-size: 12px;
  color: var(--text-muted);
}

/* Forms */
.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.sub-label {
  font-size: 11px !important;
  color: #cbd5e1 !important;
  text-transform: none !important;
  margin-bottom: 4px;
}

.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 10px 14px;
  min-height: 44px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 15px; /* Previene auto-zoom en iOS Safari */
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--gold-glow);
}

textarea.form-control {
  resize: vertical;
  min-height: 68px;
  line-height: 1.45;
}

.form-row {
  display: flex;
  gap: 12px;
}

.col-8 { flex: 8; }
.col-4 { flex: 4; }

/* Script Fields */
.script-editor-boxes {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 15px;
}

.script-field {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid #232a3b;
  border-radius: 8px;
  padding: 12px;
}

.field-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 700;
  flex-wrap: wrap;
  gap: 4px;
}

.hook-field .field-label span { color: #f59e0b; }
.body-field .field-label span { color: #60a5fa; }
.cta-field .field-label span { color: #34d399; }

.field-label small {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 11px;
}

/* Image Gallery Picker */
.image-gallery-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}

.image-thumb {
  position: relative;
  aspect-ratio: 9 / 16;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s;
  background: #000;
}

.image-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.image-thumb .thumb-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.92) 0%, rgba(0,0,0,0.5) 75%, transparent 100%);
  padding: 8px 6px;
  font-size: 10.5px;
  font-weight: 700;
  color: #fff;
  text-align: center;
  line-height: 1.2;
}

.image-thumb:hover {
  transform: translateY(-2px);
}

.image-thumb.selected {
  border-color: var(--gold);
  box-shadow: 0 0 14px var(--gold-glow);
}

.image-thumb.selected::after {
  content: '✓';
  position: absolute;
  top: 6px;
  right: 6px;
  background: var(--gold);
  color: #000;
  font-weight: 900;
  font-size: 11px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* AI Image Generator Box */
.ai-generator-box {
  background: #191f2c;
  border: 1px dashed #3a4760;
  border-radius: 8px;
  padding: 14px;
  margin-top: 10px;
}

.ai-box-header {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.upload-wrapper {
  margin-top: 8px;
}

.btn-upload {
  display: block;
  text-align: center;
  background: #1e2533;
  border: 1px dashed #3a4459;
  padding: 11px;
  min-height: 44px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-upload:hover {
  background: #252e3f;
  color: var(--text-main);
  border-color: var(--primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  min-height: 44px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
  font-family: inherit;
  text-align: center;
}

.btn-sm {
  padding: 8px 14px;
  min-height: 36px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

.btn-large {
  padding: 14px 20px;
  min-height: 50px;
  font-size: clamp(14px, 2.5vw, 16px);
  letter-spacing: 0.5px;
}

.btn-primary {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #000;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #fbbf24 0%, #b45309 100%);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #242c3d;
  color: #fff;
  border: 1px solid #37435c;
}

.btn-secondary:hover {
  background: #2d384e;
  border-color: #4a5a7b;
}

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: #4a5a7b;
}

.btn-gold-outline {
  background: rgba(245, 158, 11, 0.08);
  color: var(--gold);
  border: 1px dashed rgba(255, 215, 0, 0.4);
}

.btn-gold-outline:hover {
  background: rgba(245, 158, 11, 0.16);
  border-color: var(--gold);
}

.btn-success {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
  background: linear-gradient(135deg, #34d399 0%, #047857 100%);
}

.mt-5 { margin-top: 5px; }
.mt-10 { margin-top: 10px; }
.mt-15 { margin-top: 15px; }
.block { display: block; }
.text-muted { color: var(--text-muted); font-size: 12px; }

/* Phone Stage Mockup (Right Column) */
.preview-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.preview-sticky-wrap {
  position: sticky;
  top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.preview-header-mobile {
  display: none;
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--primary);
  text-align: center;
}

@media (max-width: 960px) {
  .preview-header-mobile {
    display: block;
  }
}

.phone-mockup {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 9 / 16;
  background: #000;
  border-radius: 32px;
  padding: 10px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 0 2px #2a3346;
  position: relative;
  margin: 0 auto;
}

.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 24px;
  overflow: hidden;
  background: #000;
  position: relative;
}

.stage-placeholder {
  width: 100%;
  height: 100%;
  position: relative;
}

.stage-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.stage-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, transparent 40%, rgba(0,0,0,0.3) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 18px;
}

.live-subtitle-preview {
  text-align: center;
  font-family: 'Impact', sans-serif;
  font-size: clamp(18px, 4vw, 24px);
  color: #fff;
  text-shadow: 2px 2px 0 #000, -2px -2px 0 #000, 2px -2px 0 #000, -2px 2px 0 #000, 0 3px 6px rgba(0,0,0,0.9);
  margin-bottom: 50px;
  transition: all 0.3s;
  word-break: break-word;
}

.live-subtitle-preview .highlight {
  color: var(--gold);
}

.phone-screen video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Spinner Overlay */
.render-overlay {
  position: absolute;
  inset: 0;
  background: rgba(11, 14, 20, 0.94);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  text-align: center;
  backdrop-filter: blur(4px);
  z-index: 10;
}

.spinner {
  width: 44px;
  height: 44px;
  border: 4px solid rgba(245, 158, 11, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 14px;
}

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

.render-overlay h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.render-overlay p {
  font-size: 12px;
  color: var(--text-muted);
}

/* Video Actions */
.video-actions {
  width: 100%;
  max-width: 320px;
  margin: 16px auto 0 auto;
}

/* Recent Reels */
.recent-reels-card {
  width: 100%;
  max-width: 320px;
  margin: 16px auto 0 auto;
  max-height: 250px;
  overflow-y: auto;
}

.recent-reels-card h3 {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.recent-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.recent-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-input);
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.2s;
  overflow: hidden;
}

.recent-item:hover {
  background: #252e3f;
}

.recent-item span {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 200px;
}

.recent-item a {
  color: var(--primary);
  text-decoration: none;
  flex-shrink: 0;
}

/* ==========================================================================
   MEDIA QUERIES ESPECÍFICAS (Mobile-First / Fluid Breakpoints)
   ========================================================================== */

/* Tablet & Smaller Desktops (<= 1024px) */
@media (max-width: 1024px) {
  .workspace {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 20px;
  }
}

/* Small Tablets & Mobile Landscape (<= 960px) */
@media (max-width: 960px) {
  .workspace {
    grid-template-columns: 1fr;
  }
  .preview-panel {
    position: static;
    margin-top: 20px;
  }
  .preview-sticky-wrap {
    position: static;
  }
}

/* Phones (<= 600px - iPhone 14/15 Pro Max, Android) */
@media (max-width: 600px) {
  .form-row {
    flex-direction: column;
    gap: 10px;
  }
  .col-8, .col-4 {
    flex: 100%;
  }
  .image-gallery-picker {
    grid-template-columns: repeat(2, 1fr);
  }
  .app-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .header-badges {
    width: 100%;
  }
}

/* Extra Small Phones (<= 360px - iPhone SE, small Androids) */
@media (max-width: 360px) {
  .app-layout {
    padding: 10px;
  }
  .phone-mockup {
    max-width: 270px;
    border-radius: 26px;
    padding: 8px;
  }
  .card {
    padding: 12px;
  }
  .image-gallery-picker {
    grid-template-columns: 1fr;
  }
  .btn-large {
    font-size: 13px;
    padding: 12px;
  }
}