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

:root {
  --bg: #0a0a12;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-hover: rgba(255, 255, 255, 0.1);
  --border: rgba(255, 255, 255, 0.12);
  --text: #f4f4f8;
  --text-muted: rgba(244, 244, 248, 0.6);
  --accent-1: #7c5cff;
  --accent-2: #ff6bcb;
  --accent-3: #3dd6c3;
  --gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 20px;
  --radius-sm: 12px;
  --font: 'Manrope', system-ui, -apple-system, sans-serif;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Background blobs */
.bg-blobs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.45;
  animation: float 18s ease-in-out infinite;
}

.blob-1 {
  width: 480px;
  height: 480px;
  background: var(--accent-1);
  top: -120px;
  right: -80px;
}

.blob-2 {
  width: 400px;
  height: 400px;
  background: var(--accent-2);
  bottom: -100px;
  left: -60px;
  animation-delay: -6s;
}

.blob-3 {
  width: 320px;
  height: 320px;
  background: var(--accent-3);
  top: 40%;
  left: 50%;
  transform: translateX(-50%);
  animation-delay: -12s;
  opacity: 0.25;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 25px) scale(0.95); }
}

/* Layout */
.app {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 20px 40px;
}

/* Header */
.header {
  text-align: center;
  margin-bottom: 40px;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-3);
  background: rgba(61, 214, 195, 0.12);
  border: 1px solid rgba(61, 214, 195, 0.25);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.header h1 {
  font-size: clamp(2rem, 6vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}

.header h1 span {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 480px;
  margin: 0 auto;
}

/* Niche input */
.niche-field {
  margin-bottom: 32px;
}

.niche-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px 4px 4px 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.niche-input-wrap:focus-within {
  border-color: rgba(124, 92, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.15);
}

.niche-icon {
  font-size: 1.2rem;
  line-height: 1;
  flex-shrink: 0;
}

.niche-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 500;
  padding: 12px 0;
}

.niche-input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

.niche-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 8px;
}

/* Categories */
.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 12px;
  text-align: center;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-bottom: 32px;
}

.category-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.category-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient);
  opacity: 0;
  transition: opacity var(--transition);
}

.category-btn:hover {
  background: var(--surface-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.category-btn.active {
  border-color: transparent;
  box-shadow: 0 8px 32px rgba(124, 92, 255, 0.35);
}

.category-btn.active::before {
  opacity: 1;
}

.category-btn.active .category-icon,
.category-btn.active .category-name {
  position: relative;
  z-index: 1;
}

.category-icon {
  font-size: 1.4rem;
  line-height: 1;
}

.category-name {
  white-space: nowrap;
}

/* Generate button */
.generate-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 18px 28px;
  background: var(--gradient);
  border: none;
  border-radius: var(--radius);
  color: #fff;
  font-family: var(--font);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(124, 92, 255, 0.4);
  transition: transform var(--transition), box-shadow var(--transition);
}

.generate-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(124, 92, 255, 0.5);
}

.generate-btn:active {
  transform: translateY(-1px);
}

.generate-btn.loading {
  pointer-events: none;
  opacity: 0.85;
}

.generate-btn.loading .btn-text::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-left: 10px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

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

.btn-shine {
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  animation: shine 3s ease-in-out infinite;
}

@keyframes shine {
  0%, 100% { left: -100%; }
  50% { left: 150%; }
}

.btn-icon {
  font-size: 1.2rem;
  transition: transform 0.4s ease;
}

.generate-btn:hover .btn-icon {
  transform: rotate(20deg) scale(1.15);
}

/* Placeholder */
.placeholder {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
  transition: opacity 0.3s ease;
}

.placeholder.hidden {
  display: none;
}

.placeholder-icon {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 16px;
}

.placeholder-icon span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient);
  animation: bounce 1.4s ease-in-out infinite;
}

.placeholder-icon span:nth-child(2) { animation-delay: 0.2s; }
.placeholder-icon span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* Result */
.result-wrapper {
  margin-top: 28px;
}

.result-wrapper[hidden] {
  display: none;
}

.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(24px) scale(0.97);
  transition: none;
}

.result-card.reveal {
  animation: cardReveal 0.65s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.result-card.shake {
  animation: cardShake 0.5s ease;
}

@keyframes cardReveal {
  0% {
    opacity: 0;
    transform: translateY(32px) scale(0.94) rotateX(8deg);
  }
  60% {
    opacity: 1;
    transform: translateY(-4px) scale(1.01);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes cardShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

.result-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.result-type {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 5px 12px;
  border-radius: 100px;
  background: var(--gradient);
  color: #fff;
}

.result-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-3);
  background: rgba(61, 214, 195, 0.12);
  padding: 5px 12px;
  border-radius: 100px;
  border: 1px solid rgba(61, 214, 195, 0.2);
}

.result-niche {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-1);
  background: rgba(124, 92, 255, 0.12);
  padding: 5px 12px;
  border-radius: 100px;
  border: 1px solid rgba(124, 92, 255, 0.25);
}

.result-niche[hidden] {
  display: none;
}

.result-title {
  font-size: clamp(1.25rem, 4vw, 1.5rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.result-description {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.result-hook {
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  border-left: 3px solid var(--accent-2);
}

.hook-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-2);
  margin-bottom: 6px;
}

.result-hook p {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--text);
}

/* Staggered text reveal */
.result-card.reveal .result-title,
.result-card.reveal .result-description,
.result-card.reveal .result-hook {
  animation: textFadeUp 0.5s ease forwards;
  opacity: 0;
}

.result-card.reveal .result-title { animation-delay: 0.15s; }
.result-card.reveal .result-description { animation-delay: 0.28s; }
.result-card.reveal .result-hook { animation-delay: 0.4s; }

@keyframes textFadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Actions */
.result-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.action-btn.primary {
  background: var(--gradient);
  border-color: transparent;
  color: #fff;
}

.action-btn.primary:hover {
  box-shadow: 0 8px 24px rgba(124, 92, 255, 0.35);
  transform: translateY(-2px);
}

.action-btn.secondary {
  background: var(--surface);
  color: var(--text);
}

.action-btn.secondary:hover {
  background: var(--surface-hover);
  transform: translateY(-2px);
}

.copy-toast {
  text-align: center;
  font-size: 0.85rem;
  color: var(--accent-3);
  margin-top: 12px;
  animation: toastIn 0.3s ease;
}

.copy-toast[hidden] {
  display: none;
}

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

/* Footer */
.footer {
  text-align: center;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

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

/* Responsive */
@media (max-width: 600px) {
  .app {
    padding: 32px 16px 32px;
  }

  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .category-btn[data-category="rubric"],
  .category-btn[data-category="stories"] {
    grid-column: span 1;
  }

  .category-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .category-btn[data-category="all"] {
    grid-column: span 2;
  }

  .category-btn[data-category="post"],
  .category-btn[data-category="reels"],
  .category-btn[data-category="stories"],
  .category-btn[data-category="rubric"] {
    grid-column: span 2;
  }

  .result-card {
    padding: 22px 18px;
  }

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

@media (max-width: 380px) {
  .category-name {
    font-size: 0.72rem;
  }

  .generate-btn {
    font-size: 1rem;
    padding: 16px 20px;
  }
}

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