/* --- 1. CSS Variables & Theme System --- */
:root {
  --bg-color: #f4f7f9;
  --card-color: rgba(255, 255, 255, 0.6);
  --text-color: #1b1b1f;
  --subtle-text-color: #5a5a6a;
  --primary-color: #3b82f6; /* Blue */
  --accent-color: #8b5cf6; /* Purple */
  --glass-border-color: rgba(0, 0, 0, 0.08);
  --shadow-color: rgba(0, 0, 0, 0.05);
  --glow-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
  --toggle-bg: rgba(0, 0, 0, 0.05);
  --toggle-thumb-bg: #ffffff;
  --muted-color: #e5e7eb;
}

.dark-theme {
  --bg-color: #0f0f1a;
  --card-color: rgba(26, 26, 46, 0.7);
  --text-color: #f0f0f0;
  --subtle-text-color: #9a9aa2;
  --glass-border-color: rgba(255, 255, 255, 0.1);
  --shadow-color: rgba(0, 0, 0, 0.2);
  --glow-shadow: 0 0 25px rgba(139, 92, 246, 0.5);
  --toggle-bg: rgba(0, 0, 0, 0.2);
  --toggle-thumb-bg: #1a1a2e;
  --muted-color: #374151;
}

/* --- 2. General & Layout Styles --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "Inter", sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.4s, color 0.4s;
  line-height: 1.6;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.hidden {
  display: none !important;
}

/* --- 3. Header & Theme Toggle --- */
header {
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(244, 247, 249, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border-color);
  transition: background-color 0.4s;
}
.dark-theme header {
  background-color: rgba(15, 15, 26, 0.8);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.logo-icon-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 0.5rem;
  background-color: var(--card-color);
  border: 1px solid var(--glass-border-color);
}
.logo-icon {
  color: var(--primary-color);
}
.logo h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-color);
}

.theme-toggle {
  position: relative;
  display: inline-flex;
  height: 2.5rem;
  width: 5rem;
  align-items: center;
  border-radius: 9999px;
  border: 1px solid var(--glass-border-color);
  padding: 0.25rem;
  cursor: pointer;
  background-color: transparent; /* Button reset */
}
.toggle-track {
  position: absolute;
  inset: 0;
  border-radius: 9999px;
  background-color: var(--toggle-bg);
  transition: background-color 0.4s;
}
.dark-theme .toggle-track {
  background-image: linear-gradient(
    to right,
    var(--primary-color),
    var(--accent-color)
  );
}
.toggle-thumb {
  position: relative;
  z-index: 10;
  display: flex;
  height: 2rem;
  width: 2rem;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  background-color: var(--toggle-thumb-bg);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55),
    background-color 0.4s;
}
.dark-theme .toggle-thumb {
  transform: translateX(2.5rem);
}
.toggle-icon {
  position: absolute;
  height: 1.25rem;
  width: 1.25rem;
  transition: opacity 0.3s;
}
.sun {
  color: #f59e0b;
  opacity: 1;
}
.moon {
  color: var(--accent-color);
  opacity: 0;
}
.dark-theme .sun {
  opacity: 0;
}
.dark-theme .moon {
  opacity: 1;
}

/* --- 4. Hero & Search Form --- */
.hero-section {
  text-align: center;
  padding: 5rem 0;
}
.hero-section h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
}
.hero-section p {
  font-size: 1.125rem;
  color: var(--subtle-text-color);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}
.search-form {
  max-width: 600px;
  margin: 0 auto;
}
.search-form-container {
  background-color: var(--card-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border-color);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 4px 15px var(--shadow-color);
}
.search-input-wrapper {
  position: relative;
}
.search-icon {
  position: absolute;
  left: 1rem;
  /* Adjust icon position for textarea */
  top: 1rem; 
  transform: none;
  color: var(--subtle-text-color);
}
/* UPDATED styles for the textarea */
#idea-input {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  background: transparent;
  border: 1px solid var(--glass-border-color);
  border-radius: 0.5rem;
  font-size: 1.125rem;
  font-family: 'Inter', sans-serif;
  color: var(--text-color);
  resize: none;
  overflow-y: hidden;
  line-height: 1.5;
  min-height: 58px; /* Set a minimum height */
}
#idea-input:focus {
  outline: none;
  border-color: var(--primary-color);
}
.analyze-button {
  margin-top: 1rem;
  width: 100%;
  background-image: linear-gradient(
    to right,
    var(--primary-color),
    var(--accent-color)
  );
  color: white;
  font-weight: 500;
  padding: 1rem;
  border: none;
  border-radius: 0.5rem;
  transition: all 0.3s;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.analyze-button:hover:not(:disabled) {
  box-shadow: var(--glow-shadow);
  transform: scale(1.02);
}
.analyze-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* --- 5. Loading Indicator --- */
.loading-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 0;
}
.loader-visual {
  position: relative;
}
.loader-glow {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
    to right,
    var(--primary-color),
    var(--accent-color)
  );
  border-radius: 9999px;
  filter: blur(20px);
  opacity: 0.7;
  animation: glow 2s infinite alternate;
}
.loader-spinner-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100px;
  height: 100px;
  background-color: var(--card-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border-color);
  border-radius: 9999px;
}
.loader-spinner {
  color: var(--primary-color);
  animation: spin 1.5s linear infinite;
}
.loader-text-wrapper {
  margin-top: 1.5rem;
  text-align: center;
}
.loader-text {
  font-size: 1.125rem;
  font-weight: 500;
}
.loading-dots {
  display: flex;
  justify-content: center;
  margin-top: 0.75rem;
  gap: 0.25rem;
}
.loading-dots div {
  width: 8px;
  height: 8px;
  border-radius: 9999px;
  background-color: var(--muted-color);
  transition: all 0.3s;
}
.loading-dots div.active {
  background-color: var(--primary-color);
  transform: scale(1.1);
}

/* --- 6. Results Section --- */
.results-section {
  padding: 2rem 0;
}
.results-header {
  text-align: center;
  margin-bottom: 3rem;
}
.results-header h2 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}
.results-header p {
  color: var(--subtle-text-color);
  font-size: 1.125rem;
}
.idea-text {
  color: var(--primary-color);
  font-weight: 600;
}
.reset-button {
  margin-top: 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--card-color);
  border: 1px solid var(--glass-border-color);
  border-radius: 0.5rem;
  padding: 0.75rem 1.5rem;
  color: var(--text-color);
  cursor: pointer;
  transition: all 0.3s;
}
.reset-button:hover {
  background-color: var(--muted-color);
}
.results-category {
  margin-bottom: 4rem;
}
.results-category-title {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* --- 7. Card Styles --- */
.card {
  background-color: var(--card-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border-color);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 4px 15px var(--shadow-color);
  transition: all 0.3s;
}
.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--glow-shadow);
}
.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.card p {
  font-size: 0.9rem;
  color: var(--subtle-text-color);
}
.card-footer {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.8rem;
  margin-top: 1rem;
  color: var(--subtle-text-color);
}
.card-footer .stat {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.line-clamp-2 {
  overflow: hidden;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
}

/* --- 8. Footer --- */
.footer {
  margin-top: 4rem;
  padding: 2rem 0;
  border-top: 1px solid var(--glass-border-color);
  text-align: center;
  color: var(--subtle-text-color);
  font-size: 0.9rem;
}

/* --- 9. Animations --- */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
@keyframes glow {
  from {
    opacity: 0.5;
  }
  to {
    opacity: 0.9;
  }
}