:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --secondary-color: #ec4899;
  --background-light: #f8fafc;
  --surface-light: #ffffff;
  --text-light: #0f172a;
  --text-muted-light: #64748b;
  --border-light: #e2e8f0;

  --background-dark: #0f172a;
  --surface-dark: #1e293b;
  --text-dark: #f8fafc;
  --text-muted-dark: #94a3b8;
  --border-dark: #334155;

  --bg-color: var(--background-light);
  --surface-color: var(--surface-light);
  --text-color: var(--text-light);
  --text-muted: var(--text-muted-light);
  --border-color: var(--border-light);

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
}

[data-theme='dark'] {
  --bg-color: var(--background-dark);
  --surface-color: var(--surface-dark);
  --text-color: var(--text-dark);
  --text-muted: var(--text-muted-dark);
  --border-color: var(--border-dark);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(var(--surface-color), 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  background: transparent;
  border: none;
  color: var(--text-color);
  cursor: pointer;
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: background-color 0.2s;
}

.theme-toggle:hover {
  background-color: var(--border-color);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-color);
  cursor: pointer;
  padding: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  gap: 0.5rem;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  opacity: 0.9;
  box-shadow: var(--shadow-md), var(--shadow-glow);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background-color: var(--border-color);
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Hero Section */
.hero {
  padding: 6rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-bg-gradient {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 100vw;
  max-width: 800px;
  max-height: 800px;
  background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, rgba(255,255,255,0) 70%);
  z-index: -1;
}

[data-theme='dark'] .hero-bg-gradient {
  background: radial-gradient(circle, rgba(99,102,241,0.2) 0%, rgba(15,23,42,0) 70%);
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text-color) 30%, var(--primary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 4rem;
}

/* Glassmorphism Dashboard Preview */
.dashboard-preview {
  background: rgba(var(--surface-color), 0.5);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  max-width: 900px;
  margin: 0 auto;
  transform: perspective(1000px) rotateX(5deg);
  transition: transform 0.5s ease;
}

.dashboard-preview:hover {
  transform: perspective(1000px) rotateX(0deg);
}

.dashboard-header {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot.red { background-color: #ef4444; }
.dot.yellow { background-color: #eab308; }
.dot.green { background-color: #22c55e; }

.dashboard-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 768px) {
  .dashboard-body {
    grid-template-columns: 1fr 2fr;
  }
}

.mock-sidebar, .mock-content {
  background-color: var(--surface-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  min-height: 200px;
  border: 1px solid var(--border-color);
}

.mock-line {
  height: 1rem;
  background-color: var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  width: 100%;
}
.mock-line.short { width: 60%; }
.mock-line.title { height: 1.5rem; width: 40%; margin-bottom: 1.5rem; }
.mock-pill {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: rgba(99, 102, 241, 0.1);
  color: var(--primary-color);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  margin: 0.25rem;
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-desc {
  text-align: center;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 3rem;
}

/* Grid Layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
  }
}

/* Cards */
.card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.card-desc {
  color: var(--text-muted);
}

/* Tool Page Styles */
.tool-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

@media (min-width: 992px) {
  .tool-container {
    grid-template-columns: 350px 1fr;
  }
}

.tool-sidebar {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: sticky;
  top: 100px;
  height: fit-content;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
}

.tool-results-panel {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  min-height: 500px;
  display: flex;
  flex-direction: column;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.results-actions {
  display: flex;
  gap: 0.5rem;
}

.hashtag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.hashtag-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: rgba(99, 102, 241, 0.05);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  color: var(--primary-color);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.hashtag-item:hover {
  background-color: var(--primary-color);
  color: white;
}

.hashtag-item .copy-icon {
  width: 14px;
  height: 14px;
  opacity: 0.7;
}

.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-muted);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* Loader */
.loader {
  display: none;
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-color);
  border-bottom-color: var(--primary-color);
  border-radius: 50%;
  animation: rotation 1s linear infinite;
  margin: 2rem auto;
}

@keyframes rotation {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Footer */
.footer {
  background-color: var(--surface-color);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-about p {
  color: var(--text-muted);
  margin-top: 1rem;
}

.footer-title {
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-color);
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Utilities */
.text-gradient {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Blog Styles */
.blog-header {
  padding: 4rem 0;
  text-align: center;
  background-color: rgba(99,102,241,0.03);
  border-bottom: 1px solid var(--border-color);
}
.article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}
.article-content h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  line-height: 1.2;
}
.article-meta {
  color: var(--text-muted);
  margin-bottom: 2rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.9rem;
}
.article-content h2 {
  font-size: 1.75rem;
  margin: 2.5rem 0 1rem;
}
.article-content h3 {
  font-size: 1.25rem;
  margin: 1.5rem 0 0.75rem;
}
.article-content p {
  margin-bottom: 1.25rem;
}
.article-content ul, .article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}
.article-content li {
  margin-bottom: 0.5rem;
}
.article-img {
  width: 100%;
  border-radius: var(--radius-lg);
  margin: 2rem 0;
}

/* FAQ Styles */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
}
.faq-question {
  padding: 1.25rem;
  background-color: var(--surface-color);
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-answer {
  padding: 0 1.25rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  background-color: var(--bg-color);
}
.faq-item.active .faq-answer {
  padding: 1.25rem;
  max-height: 500px;
}

/* Mobile Menu */
@media (max-width: 767px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: var(--surface-color);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    z-index: 40;
  }
  .nav-links.active {
    transform: translateY(0);
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero h1 {
    font-size: 2.5rem;
  }
}

/* Grid Layouts - Additional */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 2rem;
}

@media (min-width: 640px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Stats Section */
.stat-box {
  text-align: center;
  padding: 2rem;
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Trust Section */
.trust-brands {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  opacity: 0.6;
  margin-top: 2rem;
}

.trust-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-muted);
}

/* Testimonials */
.testimonial-card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
}

.testimonial-text {
  font-size: 1.125rem;
  font-style: italic;
  margin-bottom: 1.5rem;
  color: var(--text-color);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.author-avatar {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background-color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

.author-info h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.author-info p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  text-align: center;
  margin: 4rem 0;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.cta-section h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.cta-section p {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}