/* Dronnav - Static HTML Website Styles */

/* === CSS Variables === */
:root {
  --button-outline: rgba(0,0,0, .10);
  --badge-outline: rgba(0,0,0, .05);
  --opaque-button-border-intensity: -8;
  --elevate-1: rgba(0,0,0, .03);
  --elevate-2: rgba(0,0,0, .08);
  
  /* Colors */
  --background: hsl(210, 20%, 98%);
  --foreground: hsl(222, 15%, 15%);
  --border: hsl(210, 15%, 88%);
  --card: hsl(0, 0%, 100%);
  --card-foreground: hsl(222, 15%, 15%);
  --card-border: hsl(210, 12%, 92%);
  --primary: hsl(210, 100%, 45%);
  --primary-foreground: hsl(210, 20%, 98%);
  --secondary: hsl(210, 16%, 89%);
  --secondary-foreground: hsl(222, 15%, 15%);
  --muted: hsl(210, 16%, 90%);
  --muted-foreground: hsl(222, 10%, 45%);
  --accent: hsl(210, 18%, 92%);
  --accent-foreground: hsl(222, 15%, 15%);
  --destructive: hsl(0, 84%, 35%);
  --destructive-foreground: hsl(0, 20%, 98%);
  --input: hsl(210, 20%, 75%);
  --ring: hsl(210, 100%, 45%);
  
  /* Fonts */
  --font-sans: Inter, system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', Menlo, monospace;
  
  /* Spacing & Layout */
  --radius: 0.5rem;
  --spacing: 0.25rem;
  
  /* Shadows */
  --shadow: 0px 4px 6px -1px hsl(210 15% 20% / 0.08), 0px 2px 4px -1px hsl(210 15% 20% / 0.06);
  --shadow-lg: 0px 10px 20px -5px hsl(210 15% 20% / 0.12), 0px 8px 16px -6px hsl(210 15% 20% / 0.10);
}

.dark {
  --button-outline: rgba(255,255,255, .10);
  --badge-outline: rgba(255,255,255, .05);
  --opaque-button-border-intensity: 9;
  --elevate-1: rgba(255,255,255, .04);
  --elevate-2: rgba(255,255,255, .09);
  
  --background: hsl(222, 15%, 8%);
  --foreground: hsl(210, 15%, 95%);
  --border: hsl(222, 12%, 18%);
  --card: hsl(222, 15%, 12%);
  --card-foreground: hsl(210, 15%, 95%);
  --card-border: hsl(222, 12%, 16%);
  --primary: hsl(210, 100%, 55%);
  --primary-foreground: hsl(222, 15%, 8%);
  --secondary: hsl(222, 15%, 18%);
  --secondary-foreground: hsl(210, 15%, 95%);
  --muted: hsl(222, 15%, 16%);
  --muted-foreground: hsl(210, 10%, 70%);
  --accent: hsl(222, 15%, 17%);
  --accent-foreground: hsl(210, 15%, 95%);
  --input: hsl(210, 15%, 35%);
  --ring: hsl(210, 100%, 55%);
}

/* === Base Styles === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p { margin-bottom: 1rem; }

/* === Container === */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* === Header/Navigation === */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--background);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--foreground);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--foreground);
  text-decoration: none;
  transition: color 0.2s;
}

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

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

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 65px;
  left: 0;
  right: 0;
  background-color: var(--background);
  border-bottom: 1px solid var(--border);
  padding: 1rem;
  box-shadow: var(--shadow-lg);
}

.mobile-menu.active {
  display: block;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav-links a {
  display: block;
  padding: 0.5rem;
  color: var(--foreground);
  text-decoration: none;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--primary-foreground);
  border-color: var(--primary);
}

.btn-primary:hover {
  opacity: 0.9;
}

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

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

.btn-ghost {
  background-color: transparent;
  color: var(--foreground);
}

.btn-ghost:hover {
  background-color: var(--accent);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.813rem;
}

.btn-lg {
  padding: 0.75rem 2rem;
  font-size: 1rem;
}

/* === Hero Section === */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  padding: 4rem 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.6), rgba(0,0,0,0.4));
  z-index: -1;
}

.hero-content {
  position: relative;
  max-width: 800px;
  color: white;
  z-index: 1;
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

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

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.section-title p {
  font-size: 1.125rem;
  color: var(--muted-foreground);
}

/* === Cards === */
.card {
  background-color: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all 0.2s;
}

.card:hover {
  box-shadow: var(--shadow);
}

.card-header {
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card-description {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

.card-content {
  margin-bottom: 1rem;
}

/* === Grid Layouts === */
.grid {
  display: grid;
  gap: 2rem;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* === Testimonials === */
.testimonial-card {
  background-color: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.testimonial-content {
  font-style: italic;
  margin-bottom: 1rem;
  color: var(--muted-foreground);
}

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

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.testimonial-info h4 {
  font-size: 0.938rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.testimonial-info p {
  font-size: 0.813rem;
  color: var(--muted-foreground);
  margin: 0;
}

/* === Pricing Cards === */
.pricing-card {
  background-color: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  position: relative;
}

.pricing-card.popular {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.pricing-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background-color: var(--primary);
  color: var(--primary-foreground);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.pricing-price span {
  font-size: 1.25rem;
  color: var(--muted-foreground);
}

.pricing-features {
  list-style: none;
  margin: 2rem 0;
  text-align: left;
}

.pricing-features li {
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pricing-features li::before {
  content: "✓";
  color: var(--primary);
  font-weight: 700;
}

/* === Blog Grid === */
.blog-card {
  background-color: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.2s;
}

.blog-card:hover {
  box-shadow: var(--shadow);
}

.blog-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.blog-content {
  padding: 1.5rem;
}

.blog-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.813rem;
  color: var(--muted-foreground);
  margin-bottom: 0.5rem;
}

.blog-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.blog-excerpt {
  color: var(--muted-foreground);
  font-size: 0.938rem;
  margin-bottom: 1rem;
}

/* === Forms === */
.form-group {
  margin-bottom: 1.5rem;
}

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

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--input);
  border-radius: var(--radius);
  background-color: var(--background);
  color: var(--foreground);
  font-family: inherit;
  font-size: 0.938rem;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 3px hsl(210 100% 45% / 0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-error {
  color: var(--destructive);
  font-size: 0.813rem;
  margin-top: 0.25rem;
}

/* === Footer === */
.footer {
  background-color: var(--card);
  border-top: 1px solid var(--border);
  padding: 3rem 0 1.5rem;
  margin-top: 5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--muted-foreground);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  text-align: center;
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

/* === Modal === */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background-color: rgba(0, 0, 0, 0.5);
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--card);
  border-radius: var(--radius);
  padding: 2rem;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--muted-foreground);
}

.modal-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* === Animations === */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

.fade-in-section {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Statistics Counter === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.stat-card {
  text-align: center;
  padding: 2rem;
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

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

/* === Image Upload Demo === */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.upload-area.drag-over {
  border-color: var(--primary);
  background-color: var(--accent);
}

.upload-area:hover {
  border-color: var(--primary);
}

.preview-image {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 1rem 0;
}

.analysis-results {
  margin-top: 2rem;
  padding: 1.5rem;
  background-color: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
}

/* === Loading Spinner === */
.spinner {
  border: 3px solid var(--muted);
  border-top-color: var(--primary);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 2rem auto;
}

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

/* === Responsive Design === */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
  
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .section-title h2 {
    font-size: 1.875rem;
  }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* === Utility Classes === */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }

.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }

.p-4 { padding: 1rem; }
.p-8 { padding: 2rem; }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

.w-full { width: 100%; }
.max-w-2xl { max-width: 672px; }
.max-w-4xl { max-width: 896px; }

.rounded { border-radius: var(--radius); }
.rounded-full { border-radius: 9999px; }

.shadow { box-shadow: var(--shadow); }
.shadow-lg { box-shadow: var(--shadow-lg); }