:root {
  --pico-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  --pico-font-size: 16px;
  --pico-line-height: 1.5;
  --pico-primary: #3eb0ef;
  --pico-primary-background: #3eb0ef;
  --pico-primary-hover: #329ad6;
  --pico-primary-underline: rgba(62, 176, 239, 0.5);
  --pico-primary-focus: rgba(62, 176, 239, 0.25);
  --pico-primary-inverse: #ffffff;
  --pico-background-color: #f5f5f5;
  --pico-card-background-color: #ffffff;
  --pico-muted-border-color: #eeeeee;
  --pico-muted-color: #666666;
  --pico-color: #131313;
  --pico-border-radius: 0.5rem;
  --pico-form-element-spacing-vertical: 0.75rem;
  --pico-form-element-spacing-horizontal: 1rem;
}

[data-theme="dark"] {
  --pico-background-color: #11191f;
  --pico-card-background-color: #1a242c;
  --pico-color: #f5f5f5;
  --pico-muted-border-color: #2c3e50;
  --pico-muted-color: #a0a0a0;
  --pico-primary: #3eb0ef;
  --pico-primary-background: #3eb0ef;
  --pico-primary-hover: #329ad6;
}

/* Brand Colors */
.text-primary { color: var(--pico-primary); }
.bg-primary { background-color: var(--pico-primary); }
.bg-light { background-color: var(--pico-card-background-color); }

/* Navigation */
nav {
  background-color: var(--pico-background-color);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav ul li a {
  color: var(--pico-color);
  font-weight: 500;
  text-decoration: none;
}

nav ul li a:hover {
  color: var(--pico-primary);
}

nav .brand img {
  height: 40px;
  width: auto;
}

/* Mobile Menu */
#mobile-menu {
  display: none;
  background-color: var(--pico-background-color);
  border-top: 1px solid var(--pico-muted-border-color);
  padding: 1rem;
}

#mobile-menu.open {
  display: block;
}

/* Hero Section */
.hero {
  position: relative;
  background-color: var(--pico-background-color);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0.1;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

/* Cards & Features */
.card {
  background-color: var(--pico-card-background-color);
  border-radius: var(--pico-border-radius);
  padding: 2rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--pico-muted-border-color);
  transition: transform 0.2s;
  height: 100%;
}

.card:hover {
  transform: translateY(-5px);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 1rem;
}

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

.pricing-price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--pico-primary);
  margin: 1rem 0;
}

/* Process Steps */
.step-image {
  border-radius: var(--pico-border-radius);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Footer */
footer {
  background-color: var(--pico-background-color);
  border-top: 1px solid var(--pico-muted-border-color);
  padding: 3rem 0;
  margin-top: 4rem;
}

/* Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

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

.btn {
  display: inline-block;
  background-color: var(--pico-primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--pico-border-radius);
  text-decoration: none;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn:hover {
  background-color: var(--pico-primary-hover);
  text-decoration: none;
  color: white;
}

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

.btn-outline:hover {
  background-color: var(--pico-primary);
  color: white;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.25rem;
}

/* Theme Switcher */
.theme-switcher {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--pico-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-switcher:hover {
  color: var(--pico-primary);
  background: none;
}

.theme-switcher svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* Dark Mode Overrides */
[data-theme="dark"] .bg-gray-50 {
    background-color: #1a1a1a; 
}

[data-theme="dark"] .bg-blue-50 {
    background-color: rgba(62, 176, 239, 0.15);
}

[data-theme="dark"] .text-gray-500, 
[data-theme="dark"] .text-gray-600,
[data-theme="dark"] .text-gray-800 {
    color: var(--pico-muted-color);
}

/* Dark Mode Logo Inversion */
[data-theme="dark"] nav .brand img,
[data-theme="dark"] footer img[alt="Pool Pro Presence"] {
    filter: brightness(0) invert(1);
}

/* Platform logos in dark mode - Invert them so they are white */
[data-theme="dark"] img[alt="Ghost"],
[data-theme="dark"] img[alt="Matomo"],
[data-theme="dark"] img[alt="Trello"] {
    filter: brightness(0) invert(1);
}