/* ===================================
   CSS Variables - Color Palette
   =================================== */
:root {
  /* Base colors */
  --clr-dark-a0: #000000;
  --clr-light-a0: #ffffff;

  /* Theme primary colors */
  --clr-primary-a0: #4967bc;
  --clr-primary-a10: #6176c4;
  --clr-primary-a20: #7686cb;
  --clr-primary-a30: #8a97d3;
  --clr-primary-a40: #9ea7da;
  --clr-primary-a50: #b2b8e2;

  /* Theme surface colors */
  --clr-surface-a0: #121212;
  --clr-surface-a10: #282828;
  --clr-surface-a20: #3f3f3f;
  --clr-surface-a30: #575757;
  --clr-surface-a40: #717171;
  --clr-surface-a50: #8b8b8b;

  /* Theme tonal surface colors */
  --clr-surface-tonal-a0: #191a21;
  --clr-surface-tonal-a10: #2e2f36;
  --clr-surface-tonal-a20: #45454c;
  --clr-surface-tonal-a30: #5c5d63;
  --clr-surface-tonal-a40: #75767b;
  --clr-surface-tonal-a50: #8f9094;

  /* Success colors */
  --clr-success-a0: #22946e;
  --clr-success-a10: #47d5a6;
  --clr-success-a20: #9ae8ce;

  /* Warning colors */
  --clr-warning-a0: #a87a2a;
  --clr-warning-a10: #d7ac61;
  --clr-warning-a20: #ecd7b2;

  /* Danger colors */
  --clr-danger-a0: #9c2121;
  --clr-danger-a10: #d94a4a;
  --clr-danger-a20: #eb9e9e;

  /* Info colors */
  --clr-info-a0: #21498a;
  --clr-info-a10: #4077d1;
  --clr-info-a20: #92b2e5;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background-color: var(--clr-surface-a0);
  color: var(--clr-light-a0);
  line-height: 1.6;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
  background-color: var(--clr-surface-tonal-a0);
  padding: 1rem 0;
  border-bottom: 1px solid var(--clr-surface-a20);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--clr-primary-a30);
  transition: color 0.3s ease;
}

.navbar-brand:hover {
  color: var(--clr-primary-a50);
}

.nav-link {
  color: var(--clr-surface-a50);
  font-weight: 500;
  margin: 0 1rem;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--clr-primary-a30);
}

/* ===================================
   Hero Section - Full Height
   =================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(
    135deg,
    var(--clr-surface-a0) 0%,
    var(--clr-surface-tonal-a10) 100%
  );
  position: relative;
  overflow: hidden;
  padding: 8rem 0 4rem 0;
}

/* Spline 3D Background */
.spline-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
  pointer-events: auto;
}

.spline-background iframe {
  width: 100%;
  height: 100%;
  display: block;
  border: none;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at 20% 50%,
    var(--clr-primary-a0) 0%,
    transparent 50%
  );
  opacity: 0.1;
  pointer-events: none;
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 700;
  margin-bottom: 2rem;
  line-height: 1.2;
  background: linear-gradient(
    135deg,
    var(--clr-primary-a30) 0%,
    var(--clr-primary-a50) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .lead {
  font-size: clamp(1.2rem, 2.5vw, 1.75rem);
  color: var(--clr-light-a0);
  margin-bottom: 3rem;
  line-height: 1.5;
  max-width: 600px;
}

.hero .btn-primary-custom,
.hero .btn-secondary-custom {
  font-size: 1.125rem;
  padding: 1.125rem 2.75rem;
}

/* Hero screenshot styling */
.hero .screenshot-image {
  min-height: 450px;
  max-height: 1200px;
  object-fit: contain;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.hero .screenshot-image:hover {
  transform: translateY(-10px);
  box-shadow: 0 25px 70px rgba(73, 103, 188, 0.3);
}

/* ===================================
   Hero Responsive Design
   =================================== */

/* Large desktops */
@media (min-width: 1400px) {
  .hero {
    padding: 10rem 0 6rem 0;
  }

  .hero h1 {
    font-size: 5.5rem;
  }

  .hero .lead {
    font-size: 2rem;
  }

  .hero .screenshot-image,
  .hero .screenshot-placeholder {
    min-height: 550px;
  }
}

/* Desktop */
@media (min-width: 992px) and (max-width: 1399px) {
  .hero {
    min-height: 90vh;
    padding: 8rem 0 4rem 0;
  }

  .hero .screenshot-image,
  .hero .screenshot-placeholder {
    min-height: 500px;
  }
}

/* Tablet */
@media (max-width: 991px) {
  .hero {
    min-height: auto;
    padding: 6rem 0 4rem 0;
  }

  .hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
  }

  .hero .lead {
    font-size: 1.5rem;
    margin-bottom: 2.5rem;
  }

  .hero .screenshot-image,
  .hero .screenshot-placeholder {
    min-height: 400px;
    max-height: 500px;
  }

  .hero .col-lg-5 {
    display: block;
  }
}

/* Mobile landscape and small tablets */
@media (max-width: 768px) {
  .hero {
    padding: 5rem 0 3rem 0;
  }

  /* Adjust Spline for tablet - full width but lower opacity */
  .spline-background {
    width: 100%;
    opacity: 0.4;
  }

  .hero h1 {
    font-size: 2.75rem;
    margin-bottom: 1.25rem;
  }

  .hero .lead {
    font-size: 1.25rem;
    margin-bottom: 2rem;
  }

  .hero .d-flex {
    flex-direction: column;
  }

  .hero .btn-primary-custom,
  .hero .btn-secondary-custom {
    width: 100%;
  }

  .hero .screenshot-image,
  .hero .screenshot-placeholder {
    min-height: 350px;
    max-height: 450px;
  }
}

/* Mobile portrait */
@media (max-width: 576px) {
  .hero {
    padding: 4rem 0 2rem 0;
  }

  /* Adjust Spline for mobile - full width and subtle */
  .spline-background {
    width: 100%;
    opacity: 0.3;
  }

  .hero h1 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
  }

  .hero .lead {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
  }

  .hero .btn-primary-custom,
  .hero .btn-secondary-custom {
    padding: 1rem 2rem;
    font-size: 1rem;
  }

  .hero .screenshot-image,
  .hero .screenshot-placeholder {
    min-height: 280px;
    max-height: 350px;
  }
}

/* Small mobile devices */
@media (max-width: 400px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero .lead {
    font-size: 1rem;
  }

  .hero .screenshot-image,
  .hero .screenshot-placeholder {
    min-height: 250px;
    max-height: 300px;
  }
}

/* ===================================
   Buttons
   =================================== */
.btn-primary-custom {
  background-color: var(--clr-primary-a0);
  color: var(--clr-light-a0);
  padding: 1rem 2.5rem;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(73, 103, 188, 0.3);
  cursor: pointer;
}

.btn-primary-custom:hover {
  background-color: var(--clr-primary-a30);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(73, 103, 188, 0.5);
}

.btn-secondary-custom {
  background-color: transparent;
  color: var(--clr-primary-a30);
  padding: 1rem 2.5rem;
  border: 2px solid var(--clr-primary-a20);
  border-radius: 8px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn-secondary-custom:hover {
  background-color: var(--clr-primary-a0);
  color: var(--clr-light-a0);
  border-color: var(--clr-primary-a0);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(73, 103, 188, 0.3);
}

/* ===================================
   Section Styles
   =================================== */
section {
  padding: 5rem 0;
}

.section-dark {
  background-color: var(--clr-surface-tonal-a0);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--clr-primary-a40);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--clr-primary-a30);
}

h4 {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

/* ===================================
   Feature Cards
   =================================== */
.feature-card {
  background-color: var(--clr-surface-tonal-a10);
  border-radius: 12px;
  padding: 2rem;
  height: 100%;
  transition: all 0.3s ease;
  border: 1px solid var(--clr-surface-a20);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(73, 103, 188, 0.2);
  border-color: var(--clr-primary-a20);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

/* ===================================
   Comparison Cards
   =================================== */
.comparison-card {
  background-color: var(--clr-surface-a10);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
  border-left: 4px solid var(--clr-danger-a0);
  transition: all 0.3s ease;
}

.comparison-card.solution {
  border-left-color: var(--clr-success-a0);
}

.comparison-card:hover {
  transform: translateX(5px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

/* ===================================
   Tech Stack
   =================================== */
.tech-stack {
  background-color: var(--clr-surface-a10);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  border: 2px solid var(--clr-surface-a20);
}

.tech-arrow {
  font-size: 2rem;
  color: var(--clr-primary-a30);
  margin: 0 1rem;
}

/* ===================================
   Screenshot Images & Placeholders
   =================================== */

/* Main screenshot image styling */
.screenshot-image {
  width: 100%;
  min-height: 400px;
  max-height: 500px;
  object-fit: cover;
  border-radius: 12px;
  border: 2px solid var(--clr-surface-a30);
  background-color: var(--clr-surface-a20);
  transition: all 0.3s ease;
  display: block;
}

.screenshot-image:hover {
  border-color: var(--clr-primary-a20);
  box-shadow: 0 10px 30px rgba(73, 103, 188, 0.2);
  transform: translateY(-5px);
}

/* Smaller images for side-by-side layouts */
.col-md-6 .screenshot-image {
  min-height: 350px;
  max-height: 400px;
}

/* Larger images for full-width sections */
.col-12 .screenshot-image {
  min-height: 450px;
  max-height: 600px;
}

/* Architecture diagram specific styling (usually wider) */
#tech .screenshot-image {
  min-height: 400px;
  max-height: 550px;
  object-fit: contain; /* Use contain for diagrams to show full image */
  background-color: var(--clr-surface-a10);
  padding: 2rem;
}

/* Keep placeholder styling for any remaining placeholders */
.screenshot-placeholder {
  background-color: var(--clr-surface-a20);
  border: 2px dashed var(--clr-surface-a30);
  border-radius: 12px;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-surface-a50);
  font-size: 1.2rem;
  margin: 2rem 0;
  transition: all 0.3s ease;
}

.screenshot-placeholder:hover {
  border-color: var(--clr-primary-a20);
  background-color: var(--clr-surface-tonal-a10);
}

/* ===================================
   Responsive Adjustments
   =================================== */

@media (max-width: 992px) {
  .screenshot-image {
    min-height: 300px;
    max-height: 400px;
  }

  .col-md-6 .screenshot-image {
    min-height: 280px;
    max-height: 350px;
  }

  #tech .screenshot-image {
    min-height: 300px;
    max-height: 450px;
    padding: 1.5rem;
  }
}

@media (max-width: 768px) {
  .screenshot-image {
    min-height: 250px;
    max-height: 350px;
  }

  .col-md-6 .screenshot-image {
    min-height: 250px;
    max-height: 300px;
    margin-bottom: 1rem;
  }

  .col-12 .screenshot-image {
    min-height: 250px;
    max-height: 400px;
  }

  #tech .screenshot-image {
    min-height: 250px;
    max-height: 350px;
    padding: 1rem;
  }
}

@media (max-width: 576px) {
  .screenshot-image {
    min-height: 200px;
    max-height: 300px;
  }

  .col-md-6 .screenshot-image {
    min-height: 200px;
    max-height: 250px;
  }
}

/* ===================================
   CTA Section
   =================================== */
.cta-section {
  background: linear-gradient(
    135deg,
    var(--clr-primary-a0) 0%,
    var(--clr-primary-a20) 100%
  );
  padding: 5rem 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--clr-light-a0);
}

.cta-section p {
  color: var(--clr-primary-a50);
  font-size: 1.2rem;
}

/* ===================================
   Footer
   =================================== */
footer {
  background-color: var(--clr-surface-tonal-a0);
  padding: 3rem 0;
  border-top: 1px solid var(--clr-surface-a20);
}

/* ===================================
   Feature Lists
   =================================== */
.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  padding: 0.75rem 0;
  color: var(--clr-surface-a50);
  font-size: 1.1rem;
}

.feature-list li::before {
  content: "→";
  color: var(--clr-primary-a30);
  font-weight: bold;
  margin-right: 1rem;
}

/* ===================================
   Accessibility - Focus States
   =================================== */
a:focus,
button:focus {
  outline: 2px solid var(--clr-primary-a30);
  outline-offset: 4px;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
  .hero {
    padding: 4rem 0;
  }

  section {
    padding: 3rem 0;
  }

  .tech-arrow {
    display: block;
    margin: 1rem 0;
    transform: rotate(90deg);
  }
}

/* ===================================
   Popular LLMs Section
   =================================== */

#llms {
  background-color: var(--clr-surface-a0);
  padding: 5rem 0;
}

.llm-section-subtitle {
  font-size: 0.875rem;
  color: var(--clr-surface-a50);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.llm-section-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--clr-light-a0);
  margin-bottom: 0;
}

/* LLM Cards */
.llm-card {
  background-color: var(--clr-surface-tonal-a10);
  border: 1px solid var(--clr-surface-a20);
  border-radius: 12px;
  padding: 1.5rem;
  height: 100%;
  transition: all 0.3s ease;
  position: relative;
}

.llm-card:hover {
  border-color: var(--clr-surface-a30);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.llm-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.llm-icon-placeholder {
  width: 48px;
  height: 48px;
  background-color: var(--clr-surface-a20);
  border: 1px solid var(--clr-surface-a30);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.llm-bookmark {
  background: transparent;
  border: none;
  color: var(--clr-surface-a40);
  cursor: pointer;
  padding: 0.5rem;
  transition: all 0.2s ease;
  border-radius: 4px;
}

.llm-bookmark:hover {
  background-color: var(--clr-surface-a20);
  color: var(--clr-primary-a30);
}

.llm-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--clr-light-a0);
  margin-bottom: 0.5rem;
}

.llm-card-description {
  font-size: 0.9rem;
  color: var(--clr-surface-a50);
  line-height: 1.5;
  margin-bottom: 1rem;
  min-height: 2.7em;
}

.llm-card-stats {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--clr-surface-a40);
  font-size: 0.875rem;
}

.llm-card-stats svg {
  color: var(--clr-surface-a40);
}

.llm-card-stats span {
  font-weight: 500;
}

/* ===================================
   LLM Section Responsive
   =================================== */

@media (max-width: 991px) {
  .llm-section-title {
    font-size: 3rem;
  }
}

@media (max-width: 768px) {
  #llms {
    padding: 4rem 0;
  }

  .llm-section-title {
    font-size: 2.5rem;
  }

  .llm-card {
    padding: 1.25rem;
  }
}

@media (max-width: 576px) {
  .llm-section-title {
    font-size: 2rem;
  }

  .llm-icon-placeholder {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }

  .llm-card-title {
    font-size: 1.125rem;
  }
}

/* ===================================
   PRICING SECTION - LiteLLM Design Integration
   =================================== */

.pricing-section {
  background-color: var(--clr-surface-a0);
  padding: 5rem 0;
}

.pricing-header {
  margin-bottom: 4rem;
}

.pricing-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--clr-primary-a40);
  margin-bottom: 3rem;
}

/* Billing Toggle */
.billing-toggle-container {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.billing-toggle {
  display: inline-flex;
  gap: 8px;
  background: rgba(73, 103, 188, 0.1);
  padding: 8px;
  border-radius: 10px;
  border: 1px solid var(--clr-surface-a20);
}

.toggle-btn {
  padding: 10px 24px;
  border: none;
  background: transparent;
  color: var(--clr-surface-a40);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 8px;
  font-family: "Inter", sans-serif;
  white-space: nowrap;
}

.toggle-btn.active {
  background-color: var(--clr-primary-a0);
  color: var(--clr-light-a0);
  box-shadow: 0 4px 12px rgba(73, 103, 188, 0.3);
}

.toggle-btn:hover:not(.active) {
  color: var(--clr-primary-a30);
}

.save-badge {
  display: inline-block;
  margin-left: 6px;
  font-size: 0.8rem;
  color: var(--clr-surface-a50);
  font-weight: 500;
}

/* Pricing Cards Container */
.pricing-cards-row {
  margin-top: 3rem;
}

.pricing-card {
  position: relative;
  border: 1px solid var(--clr-surface-a20);
  background-color: var(--clr-surface-tonal-a10);
  padding: 2.5rem 2rem;
  border-radius: 12px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.pricing-card:hover {
  border-color: var(--clr-primary-a20);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(73, 103, 188, 0.2);
}

/* Featured/Most Popular Card */
.pricing-card-featured {
  border: 2px solid var(--clr-primary-a20);
  background: linear-gradient(
    135deg,
    var(--clr-surface-tonal-a10) 0%,
    rgba(73, 103, 188, 0.05) 100%
  );
  transform: scale(1.02);
}

.pricing-card-featured:hover {
  box-shadow:
    0 25px 50px rgba(73, 103, 188, 0.3),
    0 0 30px rgba(73, 103, 188, 0.2);
  border-color: var(--clr-primary-a0);
}

.card-badge {
  position: absolute;
  top: -14px;
  right: 24px;
  background: linear-gradient(
    135deg,
    var(--clr-primary-a0),
    var(--clr-primary-a10)
  );
  color: var(--clr-light-a0);
  padding: 6px 16px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: 6px;
  text-transform: uppercase;
  box-shadow: 0 4px 12px rgba(73, 103, 188, 0.3);
}

/* Plan Name */
.plan-name {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--clr-light-a0);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

/* Price Section */
.price-section {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 1.5rem;
}

.price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--clr-primary-a30);
}

.period {
  font-size: 0.95rem;
  color: var(--clr-surface-a50);
  font-weight: 500;
}

/* Plan Description */
.plan-description {
  font-size: 0.95rem;
  color: var(--clr-surface-a50);
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

/* Divider */
.divider {
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--clr-surface-a20),
    transparent
  );
  margin-bottom: 1.75rem;
}

/* Audience Section - Flip Cards */
.audience-section {
  padding: 5rem 0;
}

.audience-section h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 3rem;
  background: linear-gradient(
    135deg,
    var(--clr-primary-a30) 0%,
    var(--clr-primary-a50) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Flip Card Container */
.flip-card {
  background-color: transparent;
  width: 100%;
  height: 500px;
  perspective: 1000px;
  cursor: pointer;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid rgba(73, 103, 188, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

/* Front of card */
.flip-card-front {
  background: linear-gradient(
    135deg,
    rgba(22, 27, 46, 0.8),
    rgba(22, 27, 46, 0.5)
  );
  color: var(--clr-light-a0);
  z-index: 2;
}

.flip-card-front::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(
    to right,
    var(--clr-primary-a0),
    var(--clr-success-a10)
  );
  border-radius: 16px 16px 0 0;
}

.flip-card:hover .flip-card-front {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* Back of card */
.flip-card-back {
  background: linear-gradient(
    135deg,
    rgba(34, 148, 110, 0.1),
    rgba(71, 213, 166, 0.15)
  );
  color: var(--clr-light-a0);
  transform: rotateY(180deg);
  border-color: rgba(71, 213, 166, 0.3);
}

.flip-card-back::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(
    to right,
    var(--clr-success-a10),
    var(--clr-primary-a0)
  );
  border-radius: 16px 16px 0 0;
}

/* Card Icon */
.flip-card-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  transition: transform 0.3s ease;
}

.flip-card-front:hover .flip-card-icon {
  transform: scale(1.1) rotate(10deg);
}

/* Card Title */
.flip-card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--clr-light-a0);
}

/* Card Subtitle */
.flip-card-subtitle {
  font-size: 0.95rem;
  color: var(--clr-surface-a50);
  margin: 0;
  font-style: italic;
}

/* Benefits List */
.flip-card-benefits {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem 0;
  text-align: left;
  font-size: 0.9rem;
  line-height: 1.6;
}

.flip-card-benefits li {
  margin-bottom: 0.75rem;
  color: var(--clr-light-a0);
  display: flex;
  align-items: flex-start;
}

.flip-card-benefits li::before {
  content: "✓ ";
  margin-right: 0.5rem;
  color: var(--clr-success-a10);
  font-weight: bold;
}

/* CTA Button on back */
.flip-card-cta {
  background: linear-gradient(
    135deg,
    var(--clr-primary-a0),
    var(--clr-primary-a30)
  );
  color: var(--clr-light-a0);
  border: none;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.95rem;
  margin-top: auto;
}

.flip-card-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(73, 103, 188, 0.3);
  background: linear-gradient(
    135deg,
    var(--clr-primary-a30),
    var(--clr-primary-a50)
  );
}

.flip-card-cta:active {
  transform: translateY(0);
}

/* Features Section */
.features-section {
  flex-grow: 1;
  margin-bottom: 2rem;
}

.features-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--clr-surface-a50);
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  display: block;
}

.features-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-item {
  font-size: 0.9rem;
  color: var(--clr-surface-a40);
  padding-left: 20px;
  position: relative;
  line-height: 1.5;
  transition: color 0.2s ease;
}

.feature-item::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--clr-primary-a30);
  font-weight: bold;
}

.pricing-card:hover .feature-item {
  color: var(--clr-surface-a30);
}

/* CTA Button in Pricing Cards */
.pricing-cta-btn {
  width: 100%;
  padding: 1rem 1.5rem;
  border: 2px solid var(--clr-surface-a20);
  background: transparent;
  color: var(--clr-primary-a30);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: "Inter", sans-serif;
  text-transform: uppercase;
  border-radius: 8px;
  margin-top: auto;
}

.pricing-card:hover .pricing-cta-btn {
  border-color: var(--clr-primary-a20);
  background-color: var(--clr-primary-a0);
  color: var(--clr-light-a0);
  box-shadow: 0 8px 20px rgba(73, 103, 188, 0.3);
  transform: translateY(-2px);
}

.pricing-cta-btn:active {
  transform: translateY(0);
}

/* Responsive Design for Pricing */
@media (max-width: 992px) {
  .pricing-card-featured {
    transform: scale(1);
  }

  .pricing-section {
    padding: 4rem 0;
  }
}

@media (max-width: 768px) {
  .pricing-header h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
  }

  .billing-toggle {
    flex-direction: column;
  }

  .toggle-btn {
    width: 100%;
  }

  .pricing-card {
    padding: 2rem 1.5rem;
  }

  .price {
    font-size: 2.5rem;
  }

  .plan-name {
    font-size: 1.2rem;
  }

  .pricing-cards-row {
    margin-top: 2rem;
  }
}

@media (max-width: 576px) {
  .pricing-header h2 {
    font-size: 1.75rem;
  }

  .pricing-card {
    padding: 1.5rem 1.25rem;
  }

  .price {
    font-size: 2rem;
  }

  .plan-name {
    font-size: 1.1rem;
  }

  .features-label {
    font-size: 0.7rem;
  }

  .feature-item {
    font-size: 0.85rem;
  }

  .pricing-cta-btn {
    padding: 0.875rem 1.25rem;
    font-size: 0.9rem;
  }
}

/* ===================================
   CHART.JS CONTAINER STYLING
   Matches usage-analytics dimensions and styling
   =================================== */

.chart-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

/* Horizontal Scroll Container for Mobile */
.chart-scroll-container {
  position: relative;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overflow-y: hidden;
  background-color: var(--clr-surface-tonal-a10);
  border: 2px solid var(--clr-surface-a20);
  border-radius: 12px;
  padding: 1rem;
  box-sizing: border-box;
  transition: all 0.3s ease;
}

.chart-scroll-container:hover {
  border-color: var(--clr-primary-a20);
  box-shadow: 0 10px 30px rgba(73, 103, 188, 0.2);
}

.chart-container {
  position: relative;
  width: 100%;
  min-width: 100%;
  flex: 1;
  background-color: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  overflow: visible;
}

.chart-container:hover {
  border-color: transparent;
  box-shadow: none;
  transform: none;
}

/* Chart.js Canvas Styling */
.chart-container canvas {
  max-width: 100%;
  height: auto;
}

/* Responsive Adjustments */

/* Desktop and Large Screens (1200px+) */
@media (min-width: 1200px) {
  .chart-scroll-container {
    overflow-x: hidden;
    padding: 2rem;
  }

  .chart-container {
    min-width: 100%;
    min-height: 500px;
  }
}

/* Large Tablets and Small Desktops (992px - 1199px) */
@media (max-width: 1199px) and (min-width: 992px) {
  .chart-scroll-container {
    overflow-x: hidden;
    padding: 1.5rem;
  }

  .chart-container {
    min-width: 100%;
    min-height: 450px;
  }
}

/* Tablets (768px - 991px) */
@media (max-width: 991px) and (min-width: 768px) {
  .chart-scroll-container {
    overflow-x: auto;
    padding: 1.25rem;
    min-height: 420px;
  }

  .chart-container {
    min-width: 800px;
    min-height: 400px;
  }
}

/* Large Phones in Landscape (600px - 767px) */
@media (max-width: 767px) and (min-width: 600px) {
  .chart-scroll-container {
    overflow-x: auto;
    padding: 1rem;
    min-height: 420px;
    box-sizing: border-box;
  }

  .chart-wrapper {
    width: 100%;
    height: auto;
    box-sizing: border-box;
  }

  .chart-container {
    min-width: 700px;
    min-height: 400px;
  }

  .chart-container canvas {
    max-width: 100%;
    height: auto;
  }
}

/* Standard Phones (480px - 599px) - Most Common Mobile Phones */
@media (max-width: 599px) and (min-width: 480px) {
  .chart-scroll-container {
    overflow-x: auto;
    padding: 0.75rem;
    min-height: 420px;
    box-sizing: border-box;
  }

  .chart-wrapper {
    width: 100%;
    height: auto;
    box-sizing: border-box;
  }

  .chart-container {
    min-width: 600px;
    min-height: 400px;
  }

  .chart-container canvas {
    max-width: 100%;
    height: auto;
  }
}

/* Small Phones (< 480px) - iPhone SE, Older Small Phones */
@media (max-width: 479px) {
  .chart-scroll-container {
    overflow-x: auto;
    padding: 0.75rem;
    min-height: 420px;
    box-sizing: border-box;
  }

  .chart-wrapper {
    width: 100%;
    height: auto;
    box-sizing: border-box;
  }

  .chart-container {
    min-width: 550px;
    min-height: 400px;
  }

  .chart-container canvas {
    max-width: 100%;
    height: auto;
  }
}

/* Ensure the chart container maintains aspect ratio */
.col-md-6 .chart-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

/* Match the screenshot-image styling for consistency */
.chart-scroll-container {
  background-color: var(--clr-surface-a10);
}

/* Responsive Flip Cards - Tablet */
@media (max-width: 768px) {
  .flip-card {
    height: 450px;
  }

  .flip-card-front,
  .flip-card-back {
    padding: 1.5rem;
  }

  .flip-card-icon {
    font-size: 3rem;
  }

  .flip-card-title {
    font-size: 1.25rem;
  }

  .flip-card-benefits li {
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
  }
}

/* Mobile Phones (< 576px) */
@media (max-width: 576px) {
  .audience-section {
    padding: 3rem 0;
  }

  .audience-section h2 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
  }

  .flip-card {
    height: 500px;
    margin-bottom: 1.5rem;
  }

  .flip-card-front,
  .flip-card-back {
    padding: 1.25rem;
    border-radius: 12px;
  }

  .flip-card-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
  }

  .flip-card-title {
    font-size: 1.1rem;
    margin-bottom: 0.35rem;
  }

  .flip-card-subtitle {
    font-size: 0.85rem;
  }

  .flip-card-benefits {
    font-size: 0.8rem;
    line-height: 1.5;
    margin: 1rem 0;
  }

  .flip-card-benefits li {
    margin-bottom: 0.5rem;
  }

  .flip-card-cta {
    padding: 0.75rem 1.5rem;
    font-size: 0.85rem;
  }
}

/* Extra Small Phones (< 380px) */
@media (max-width: 380px) {
  .flip-card {
    height: 450px;
  }

  .flip-card-front,
  .flip-card-back {
    padding: 1rem;
  }

  .flip-card-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
  }

  .flip-card-title {
    font-size: 1rem;
  }

  .flip-card-subtitle {
    font-size: 0.75rem;
  }

  .flip-card-benefits {
    font-size: 0.75rem;
  }
}

/* ===================================
/* ===================================
   Interactive API Flow Diagram - Horizontal
   =================================== */

.api-flow-diagram {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
}

.flow-container {
  display: flex;
  flex-direction: row;
  gap: 1rem;
  margin-bottom: 2rem;
  align-items: stretch;
  overflow-x: auto;
  padding-bottom: 1rem;
}

/* Flow Steps */
.flow-step {
  background: linear-gradient(
    135deg,
    rgba(22, 27, 46, 0.8),
    rgba(22, 27, 46, 0.5)
  );
  border: 1px solid rgba(73, 103, 188, 0.3);
  border-radius: 12px;
  padding: 1.5rem 1rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  flex: 1;
  min-width: 140px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.flow-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    to right,
    var(--clr-primary-a0),
    var(--clr-success-a10)
  );
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s ease;
}

.flow-step.active::before {
  transform: scaleX(1);
}

.flow-step.active {
  border-color: rgba(71, 213, 166, 0.5);
  box-shadow: none;
}

.step-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  display: inline-block;
  animation: pulse-icon 2s ease-in-out infinite;
}

.flow-step.active .step-icon {
  animation: bounce-icon 0.6s ease;
}

@keyframes pulse-icon {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

@keyframes bounce-icon {
  0% {
    transform: scale(0.8);
  }
  50% {
    transform: scale(1.2);
  }
  100% {
    transform: scale(1);
  }
}

.step-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-light-a0);
  margin-bottom: 0.35rem;
}

.step-info {
  font-size: 0.75rem;
  color: var(--clr-surface-a50);
}

.flow-btn {
  margin-top: 0.75rem;
  background: linear-gradient(
    135deg,
    var(--clr-primary-a0),
    var(--clr-primary-a30)
  );
  color: var(--clr-light-a0);
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.flow-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(73, 103, 188, 0.2);
}

.flow-btn:active {
  transform: translateY(0);
}

/* Flow Arrows */
.flow-arrow {
  min-width: 40px;
  width: 40px;
  height: auto;
  color: var(--clr-primary-a30);
  opacity: 0.5;
  transition: all 0.3s ease;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.flow-arrow.active {
  opacity: 1;
  color: var(--clr-success-a10);
}

.arrow-line {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: none;
}

.flow-arrow.active .arrow-line {
  animation: draw-arrow 0.8s ease forwards;
}

@keyframes draw-arrow {
  to {
    stroke-dashoffset: 0;
  }
}

/* Step Options (horizontal badges) */
.step-options {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.5rem;
}

.option-badge {
  font-size: 0.7rem;
  background: rgba(71, 213, 166, 0.15);
  color: var(--clr-success-a10);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
}

/* Best Choice */
.best-choice {
  background: linear-gradient(
    135deg,
    rgba(71, 213, 166, 0.15),
    rgba(73, 103, 188, 0.1)
  );
  border: 2px solid rgba(71, 213, 166, 0.4);
  box-shadow: none;
}

.chosen-model-compact {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-top: 0.5rem;
}

.model-name-compact {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--clr-success-a10);
}

.savings-badge-compact {
  font-size: 0.7rem;
  color: var(--clr-success-a10);
  font-weight: 700;
  background: rgba(71, 213, 166, 0.2);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  display: inline-block;
}

/* Horizontal Cost Summary */
.flow-summary-horizontal {
  background: rgba(71, 213, 166, 0.08);
  border: 1px solid rgba(71, 213, 166, 0.2);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.summary-item-h {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.summary-divider {
  color: rgba(71, 213, 166, 0.3);
  font-size: 1.5rem;
}

.summary-label {
  font-size: 0.8rem;
  color: var(--clr-surface-a50);
  font-weight: 500;
}

.summary-value {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-primary-a30);
}

.your-cost,
.openai-cost {
  color: var(--clr-primary-a10);
}

.summary-item-h.highlight .summary-value {
  color: var(--clr-success-a10);
  font-size: 1rem;
}

/* Animations */
@keyframes slide-in-left {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.flow-step {
  animation: slide-in-left 0.6s ease forwards;
}

.flow-step:nth-child(1) {
  animation-delay: 0.1s;
}
.flow-step:nth-child(3) {
  animation-delay: 0.3s;
}
.flow-step:nth-child(5) {
  animation-delay: 0.5s;
}
.flow-step:nth-child(7) {
  animation-delay: 0.7s;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .flow-container {
    gap: 0.75rem;
  }

  .flow-step {
    min-width: 120px;
    padding: 1.2rem 0.75rem;
  }

  .step-icon {
    font-size: 1.75rem;
  }

  .step-label {
    font-size: 0.85rem;
  }
}

@media (max-width: 768px) {
  .flow-container {
    gap: 0.5rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 1rem;
  }

  .flow-step {
    min-width: 110px;
    padding: 1rem 0.6rem;
    flex: 0 0 auto;
  }

  .step-icon {
    font-size: 1.5rem;
    margin-bottom: 0.35rem;
  }

  .step-label {
    font-size: 0.75rem;
  }

  .step-info {
    font-size: 0.65rem;
  }

  .flow-arrow {
    min-width: 30px;
    width: 30px;
  }

  .flow-btn {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
  }

  .flow-summary-horizontal {
    padding: 0.75rem;
    gap: 0.75rem;
  }

  .summary-item-h {
    gap: 0.15rem;
  }

  .summary-label {
    font-size: 0.75rem;
  }

  .summary-value {
    font-size: 0.85rem;
  }

  .summary-divider {
    font-size: 1.25rem;
  }
}

@media (max-width: 576px) {
  .flow-container {
    gap: 0.4rem;
  }

  .flow-step {
    min-width: 95px;
    padding: 0.75rem 0.5rem;
  }

  .step-icon {
    font-size: 1.25rem;
  }

  .step-label {
    font-size: 0.7rem;
  }

  .flow-arrow {
    min-width: 25px;
    width: 25px;
  }

  .flow-arrow svg {
    stroke-width: 1.5;
  }

  .flow-btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.7rem;
    margin-top: 0.5rem;
  }

  .flow-summary-horizontal {
    padding: 0.6rem;
    gap: 0.6rem;
    flex-direction: column;
    align-items: stretch;
  }

  .summary-item-h {
    flex: 1;
  }

  .summary-divider {
    display: none;
  }

  .summary-label {
    font-size: 0.7rem;
  }

  .summary-value {
    font-size: 0.8rem;
  }
}

@media (max-width: 380px) {
  .flow-container {
    gap: 0.3rem;
  }

  .flow-step {
    min-width: 80px;
    padding: 0.6rem 0.4rem;
  }

  .step-icon {
    font-size: 1rem;
    margin-bottom: 0.25rem;
  }

  .step-label {
    font-size: 0.65rem;
  }

  .step-info,
  .step-options {
    display: none;
  }

  .flow-arrow {
    min-width: 20px;
    width: 20px;
  }

  .flow-btn {
    display: none;
  }

  .chosen-model-compact {
    margin-top: 0.25rem;
  }

  .model-name-compact {
    font-size: 0.8rem;
  }

  .savings-badge-compact {
    font-size: 0.6rem;
  }
}