/* ========================================
   Gavin Schnee Studio — Design System
   ======================================== */

/* --- Design Tokens --- */
:root {
  --color-primary: #0f172a;
  --color-primary-light: #1e293b;
  --color-accent-blue: #3b82f6;
  --color-accent-blue-hover: #2563eb;
  --color-accent-purple: #8b5cf6;
  --color-accent-purple-hover: #7c3aed;
  --color-accent-gradient: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-inverse: #f8fafc;
  --color-bg: #ffffff;
  --color-bg-light: #f8fafc;
  --color-bg-alt: #f1f5f9;
  --color-border: #e2e8f0;
  --color-success: #10b981;
  --color-warning: #f59e0b;

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --transition: 0.2s ease;
  --max-width: 1200px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

a {
  color: var(--color-accent-blue);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent-blue-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-dark {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

.section-dark h1,
.section-dark h2,
.section-dark h3 {
  color: var(--color-text-inverse);
}

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

.text-center { text-align: center; }
.text-light { color: var(--color-text-light); }
.text-gradient {
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 16px auto 0;
}

.section-dark .section-subtitle {
  color: #94a3b8;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent-gradient);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: #fff;
}

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

.btn-secondary:hover {
  background: var(--color-bg-alt);
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent-blue);
  border: 2px solid var(--color-accent-blue);
}

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

.btn-lg {
  padding: 16px 36px;
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar-brand:hover {
  color: var(--color-primary);
}

.navbar-brand svg {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  padding: 8px 16px;
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent-blue);
  background: rgba(59, 130, 246, 0.08);
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu a {
  display: block;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
}

.nav-dropdown-menu a:hover {
  background: var(--color-bg-alt);
}

.nav-dropdown-desc {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-text-light);
  font-weight: 400;
  margin-top: 2px;
}

/* Language Toggle */
.lang-toggle {
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  transition: all var(--transition);
}

.lang-toggle:hover {
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text);
}

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

/* --- Hero --- */
.hero {
  padding: 140px 0 80px;
  text-align: center;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto 36px;
}

.hero-gradient {
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

/* --- Product Cards --- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.product-card:hover {
  border-color: var(--color-accent-blue);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.product-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.product-card-icon.blue {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-accent-blue);
}

.product-card-icon.purple {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-accent-purple);
}

.product-card h3 {
  margin-bottom: 12px;
}

.product-card p {
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.product-card .tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.tag-free {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.tag-freemium {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-accent-purple);
}

.product-card-features {
  list-style: none;
  margin-bottom: 24px;
}

.product-card-features li {
  padding: 6px 0;
  font-size: 0.9375rem;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.product-card-features li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-blue);
  flex-shrink: 0;
}

/* --- Features Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.feature-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  background: var(--color-bg-alt);
  font-size: 1.25rem;
}

.feature-card h4 {
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

/* --- Steps / How It Works --- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
  counter-reset: step;
}

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

.step {
  text-align: center;
  padding: 32px 20px;
  position: relative;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent-gradient);
  color: #fff;
  font-weight: 700;
  font-size: 1.25rem;
  margin: 0 auto 16px;
}

.step h4 {
  margin-bottom: 8px;
}

.step p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

/* --- Pricing Table --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  align-items: start;
}

.pricing-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
}

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

.pricing-card.featured {
  border-color: var(--color-accent-blue);
  box-shadow: var(--shadow-xl);
  transform: scale(1.05);
}

.pricing-card.featured::before {
  content: attr(data-badge);
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent-gradient);
  color: #fff;
  padding: 4px 20px;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
}

.pricing-tier {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-light);
}

.pricing-desc {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 28px;
  text-align: left;
}

.pricing-features li {
  padding: 8px 0;
  font-size: 0.9375rem;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
}

.pricing-features li svg {
  width: 18px;
  height: 18px;
  color: var(--color-success);
  flex-shrink: 0;
}

/* --- Trust / Why Choose Us --- */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.trust-card {
  text-align: center;
  padding: 32px;
}

.trust-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  background: var(--color-bg-alt);
  font-size: 1.5rem;
}

.section-dark .trust-icon {
  background: rgba(255, 255, 255, 0.1);
}

.trust-card h4 {
  margin-bottom: 8px;
}

.section-dark .trust-card h4 {
  color: var(--color-text-inverse);
}

.trust-card p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

.section-dark .trust-card p {
  color: #94a3b8;
}

/* --- AI Providers --- */
.providers-list {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 32px;
}

.provider-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  font-size: 0.9375rem;
  font-weight: 500;
}

/* --- Legal Pages --- */
.legal-page {
  padding: 120px 0 80px;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  margin-bottom: 8px;
}

.legal-content .effective-date {
  color: var(--color-text-light);
  margin-bottom: 40px;
  font-size: 0.9375rem;
}

.legal-content h2 {
  font-size: 1.5rem;
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.legal-content h3 {
  font-size: 1.125rem;
  margin-top: 24px;
  margin-bottom: 12px;
}

.legal-content p {
  margin-bottom: 16px;
  color: var(--color-text);
  line-height: 1.7;
}

.legal-content ul, .legal-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.legal-content li {
  margin-bottom: 8px;
  line-height: 1.7;
}

.legal-content strong {
  color: var(--color-primary);
}

.legal-content a {
  color: var(--color-accent-blue);
}

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 48px;
}

.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  margin-bottom: 16px;
}

.contact-info-card svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent-blue);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-info-card h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.contact-info-card p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

.contact-form label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.9375rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: var(--font-sans);
  margin-bottom: 20px;
  transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

/* --- Footer --- */
.footer {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-desc {
  color: #94a3b8;
  font-size: 0.9375rem;
  line-height: 1.6;
}

.footer h4 {
  color: var(--color-text-inverse);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

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

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.9375rem;
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: #64748b;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  h1 { font-size: 2.5rem; }
  .hero h1 { font-size: 2.75rem; }
  .products-grid { gap: 24px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  .hero { padding: 110px 0 60px; }
  .hero h1 { font-size: 2.25rem; }
  .hero p { font-size: 1.1rem; }

  /* Navbar mobile */
  .menu-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 16px 24px;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 16px; width: 100%; }
  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    padding-left: 16px;
  }

  /* Grids to single column */
  .products-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps-3 { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
  .pricing-card.featured { transform: none; }
  .trust-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

  .btn-group { flex-direction: column; align-items: stretch; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  h1 { font-size: 1.75rem; }
  .hero h1 { font-size: 1.875rem; }
  .product-card { padding: 28px; }
  .steps { grid-template-columns: 1fr; }
}