/* ==========================================================================
   Design 11: Timeline
   Landing Page Styles for doctore.ar
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');
@import url('variables.css');

/* ==========================================================================
   Base & Reset
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-duration-fast) var(--transition-timing-ease);
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ==========================================================================
   Keyframe Animations
   ========================================================================== */

@keyframes timeline-fill {
  from {
    height: 0;
  }
  to {
    height: 100%;
  }
}

@keyframes node-pulse {
  0%,
  100% {
    box-shadow: var(--shadow-node);
  }
  50% {
    box-shadow: var(--shadow-node-active);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slide-left {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slide-right {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes line-draw {
  from {
    stroke-dashoffset: 1000;
  }
  to {
    stroke-dashoffset: 0;
  }
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.section {
  padding-top: var(--section-padding-y);
  padding-bottom: var(--section-padding-y);
}

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

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   Typography
   ========================================================================== */

.heading-1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
}

.heading-2 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
}

.heading-3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-snug);
}

.heading-4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-snug);
}

.text-large {
  font-size: var(--font-size-lg);
}

.text-small {
  font-size: var(--font-size-sm);
}

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

@media (min-width: 768px) {
  .heading-1 {
    font-size: var(--font-size-5xl);
  }

  .heading-2 {
    font-size: var(--font-size-4xl);
  }

  .heading-3 {
    font-size: var(--font-size-3xl);
  }
}

@media (min-width: 1024px) {
  .heading-1 {
    font-size: var(--font-size-6xl);
  }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-duration-fast) var(--transition-timing-ease);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary-500);
  color: var(--color-text-inverse);
}

.btn--primary:hover {
  background-color: var(--color-primary-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--secondary {
  background-color: var(--color-secondary-500);
  color: var(--color-text-inverse);
}

.btn--secondary:hover {
  background-color: var(--color-secondary-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-primary-500);
  border: var(--border-width-medium) solid var(--color-primary-500);
}

.btn--outline:hover {
  background-color: var(--color-primary-500);
  color: var(--color-text-inverse);
}

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

.btn--ghost:hover {
  background-color: var(--color-neutral-100);
}

.btn--lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-lg);
}

.btn--sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
}

.btn--icon {
  width: var(--spacing-10);
  height: var(--spacing-10);
  padding: 0;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-index-fixed);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: var(--border-width-thin) solid var(--color-neutral-100);
  transition: all var(--transition-duration-normal) var(--transition-timing-ease);
}

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

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.nav__logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-secondary-500));
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-inverse);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

.nav__logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.nav__logo-text span {
  color: var(--color-primary-500);
}

.nav__menu {
  display: none;
  align-items: center;
  gap: var(--spacing-1);
}

.nav__link {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-duration-fast) var(--transition-timing-ease);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary-500);
  background-color: var(--color-primary-50);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.nav__lang-switch {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-1);
  background-color: var(--color-neutral-100);
  border-radius: var(--border-radius-full);
}

.nav__lang-btn {
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--border-radius-full);
  transition: all var(--transition-duration-fast) var(--transition-timing-ease);
}

.nav__lang-btn--active {
  background-color: var(--color-bg-primary);
  color: var(--color-primary-500);
  box-shadow: var(--shadow-sm);
}

.nav__mobile-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  padding: var(--spacing-2);
}

.nav__mobile-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: var(--border-radius-full);
  transition: all var(--transition-duration-fast) var(--transition-timing-ease);
}

.nav__mobile-toggle--open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__mobile-toggle--open span:nth-child(2) {
  opacity: 0;
}

.nav__mobile-toggle--open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav__mobile-menu {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-bg-primary);
  padding: var(--spacing-6);
  flex-direction: column;
  gap: var(--spacing-2);
}

.nav__mobile-menu--open {
  display: flex;
}

.nav__mobile-link {
  padding: var(--spacing-4);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-duration-fast) var(--transition-timing-ease);
}

.nav__mobile-link:hover {
  background-color: var(--color-primary-50);
  color: var(--color-primary-500);
}

@media (min-width: 1024px) {
  .nav__menu {
    display: flex;
  }

  .nav__mobile-toggle {
    display: none;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 100px;
  padding-bottom: var(--spacing-16);
  overflow: hidden;
  background: linear-gradient(
    180deg,
    var(--color-bg-primary) 0%,
    var(--color-primary-50) 100%
  );
}

.hero__container {
  display: grid;
  gap: var(--spacing-12);
  align-items: center;
}

.hero__content {
  text-align: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius-full);
  margin-bottom: var(--spacing-6);
}

.hero__badge-icon {
  width: 20px;
  height: 20px;
}

.hero__title {
  margin-bottom: var(--spacing-6);
}

.hero__title-gradient {
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-secondary-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__description {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-8);
  color: var(--color-text-secondary);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
  justify-content: center;
}

.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero__timeline-preview {
  position: relative;
  width: 100%;
  max-width: 400px;
  padding: var(--spacing-8);
}

.hero__timeline-line {
  position: absolute;
  left: 50%;
  top: var(--spacing-4);
  bottom: var(--spacing-4);
  width: var(--timeline-line-width);
  background-color: var(--timeline-line-color);
  transform: translateX(-50%);
  border-radius: var(--border-radius-full);
  overflow: hidden;
}

.hero__timeline-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 0;
  background: linear-gradient(180deg, var(--color-primary-500), var(--color-secondary-500));
  animation: timeline-fill 2s ease-out 0.5s forwards;
}

.hero__timeline-nodes {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
  position: relative;
  z-index: 1;
}

.hero__timeline-node {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.hero__timeline-node:nth-child(even) {
  flex-direction: row-reverse;
}

.hero__timeline-dot {
  width: 40px;
  height: 40px;
  background-color: var(--color-bg-primary);
  border: var(--border-width-thick) solid var(--color-primary-500);
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-500);
  box-shadow: var(--shadow-node);
}

.hero__timeline-node--active .hero__timeline-dot {
  background-color: var(--color-primary-500);
  color: var(--color-text-inverse);
  animation: node-pulse 2s ease-in-out infinite;
}

.hero__timeline-card {
  flex: 1;
  padding: var(--spacing-4);
  background-color: var(--color-bg-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.hero__timeline-card-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
}

.hero__timeline-card-text {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.hero__scroll-indicator {
  position: absolute;
  bottom: var(--spacing-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  animation: bounce 2s infinite;
}

.hero__scroll-icon {
  width: 24px;
  height: 24px;
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

@media (min-width: 768px) {
  .hero__container {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
  }

  .hero__content {
    text-align: left;
  }

  .hero__description {
    margin-left: 0;
    margin-right: 0;
  }

  .hero__actions {
    justify-content: flex-start;
  }
}

/* ==========================================================================
   Product Section (TurnosMedicos)
   ========================================================================== */

.product {
  position: relative;
  overflow: hidden;
}

.product__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    var(--color-primary-900) 0%,
    var(--color-primary-700) 50%,
    var(--color-secondary-700) 100%
  );
}

.product__bg-pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    circle at 20% 80%,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 50%
  ),
  radial-gradient(
    circle at 80% 20%,
    rgba(255, 255, 255, 0.05) 0%,
    transparent 40%
  );
}

.product__container {
  position: relative;
  z-index: 1;
}

.product__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.product__star-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  background-color: rgba(255, 255, 255, 0.1);
  border: var(--border-width-thin) solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-full);
  color: var(--color-primary-200);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-4);
}

.product__title {
  color: var(--color-text-inverse);
  margin-bottom: var(--spacing-4);
}

.product__subtitle {
  color: var(--color-primary-200);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.product__content {
  display: grid;
  gap: var(--spacing-12);
  align-items: center;
}

.product__features {
  display: grid;
  gap: var(--spacing-6);
}

.product__feature {
  display: flex;
  gap: var(--spacing-4);
  padding: var(--spacing-6);
  background-color: rgba(255, 255, 255, 0.05);
  border: var(--border-width-thin) solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-xl);
  transition: all var(--transition-duration-normal) var(--transition-timing-ease);
}

.product__feature:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.product__feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary-400), var(--color-secondary-400));
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.product__feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-text-inverse);
}

.product__feature-content h4 {
  color: var(--color-text-inverse);
  margin-bottom: var(--spacing-2);
}

.product__feature-content p {
  color: var(--color-primary-200);
  font-size: var(--font-size-sm);
}

.product__visual {
  display: flex;
  justify-content: center;
}

.product__mockup {
  position: relative;
  width: 100%;
  max-width: 500px;
  background: linear-gradient(
    180deg,
    var(--color-neutral-800) 0%,
    var(--color-neutral-900) 100%
  );
  border-radius: var(--border-radius-2xl);
  padding: var(--spacing-4);
  box-shadow: var(--shadow-2xl);
}

.product__mockup-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding-bottom: var(--spacing-4);
  border-bottom: var(--border-width-thin) solid var(--color-neutral-700);
  margin-bottom: var(--spacing-4);
}

.product__mockup-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--border-radius-full);
}

.product__mockup-dot--red {
  background-color: #ff5f57;
}

.product__mockup-dot--yellow {
  background-color: #febc2e;
}

.product__mockup-dot--green {
  background-color: #28c840;
}

.product__mockup-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.product__mockup-calendar {
  background-color: var(--color-neutral-800);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-4);
}

.product__mockup-calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-4);
}

.product__mockup-calendar-title {
  color: var(--color-text-inverse);
  font-weight: var(--font-weight-semibold);
}

.product__mockup-calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--spacing-1);
}

.product__mockup-calendar-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  color: var(--color-neutral-400);
  border-radius: var(--border-radius-sm);
}

.product__mockup-calendar-day--active {
  background-color: var(--color-primary-500);
  color: var(--color-text-inverse);
}

.product__mockup-calendar-day--has-event {
  background-color: var(--color-secondary-500);
  color: var(--color-text-inverse);
}

.product__cta {
  display: flex;
  justify-content: center;
  margin-top: var(--spacing-12);
}

.product__cta-button {
  background: linear-gradient(135deg, var(--color-primary-400), var(--color-secondary-400));
  color: var(--color-text-inverse);
  font-size: var(--font-size-lg);
  padding: var(--spacing-5) var(--spacing-10);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
}

.product__cta-button:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(14, 165, 233, 0.4);
}

@media (min-width: 1024px) {
  .product__content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
  }
}

/* ==========================================================================
   Timeline Section (Services)
   ========================================================================== */

.services {
  position: relative;
}

.services__header {
  text-align: center;
  margin-bottom: var(--spacing-16);
}

.services__title {
  margin-bottom: var(--spacing-4);
}

.services__subtitle {
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.timeline {
  position: relative;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.timeline__line {
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: var(--timeline-line-width);
  background-color: var(--timeline-line-color);
  border-radius: var(--border-radius-full);
}

.timeline__line-progress {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 0;
  background: linear-gradient(180deg, var(--color-primary-500), var(--color-secondary-500));
  border-radius: var(--border-radius-full);
  transition: height var(--transition-duration-slow) var(--transition-timing-ease-out);
}

.timeline__items {
  display: flex;
  flex-direction: column;
  gap: var(--timeline-vertical-gap);
}

.timeline__item {
  position: relative;
  padding-left: calc(20px + var(--timeline-node-size) / 2 + var(--timeline-content-gap));
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--transition-duration-normal) var(--transition-timing-ease-out);
}

.timeline__item--visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline__node {
  position: absolute;
  left: calc(20px - var(--timeline-node-size) / 2 + var(--timeline-line-width) / 2);
  top: 0;
  width: var(--timeline-node-size);
  height: var(--timeline-node-size);
  background-color: var(--timeline-node-bg);
  border: var(--border-width-thick) solid var(--color-neutral-300);
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  color: var(--color-neutral-400);
  transition: all var(--transition-duration-normal) var(--transition-timing-ease);
  z-index: 1;
}

.timeline__item--active .timeline__node {
  border-color: var(--timeline-node-border);
  background-color: var(--timeline-node-active-bg);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-node-active);
}

.timeline__node-icon {
  width: 24px;
  height: 24px;
}

.timeline__content {
  background-color: var(--color-bg-primary);
  border: var(--border-width-thin) solid var(--color-neutral-200);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-duration-normal) var(--transition-timing-ease);
}

.timeline__item--active .timeline__content {
  border-color: var(--color-primary-200);
  box-shadow: var(--shadow-lg);
}

.timeline__content-header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-4);
}

.timeline__content-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary-100), var(--color-secondary-100));
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.timeline__content-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary-600);
}

.timeline__content-title {
  flex: 1;
}

.timeline__content-title h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-1);
}

.timeline__content-title span {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.timeline__content-body {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-4);
}

.timeline__content-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
}

.timeline__tag {
  padding: var(--spacing-1) var(--spacing-3);
  background-color: var(--color-neutral-100);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius-full);
}

@media (min-width: 768px) {
  .timeline__line {
    left: 50%;
    transform: translateX(-50%);
  }

  .timeline__item {
    width: 50%;
    padding-left: var(--spacing-8);
    padding-right: var(--spacing-8);
  }

  .timeline__item:nth-child(odd) {
    margin-left: auto;
    padding-left: calc(var(--timeline-node-size) / 2 + var(--timeline-content-gap));
    padding-right: var(--spacing-4);
  }

  .timeline__item:nth-child(even) {
    padding-right: calc(var(--timeline-node-size) / 2 + var(--timeline-content-gap));
    padding-left: var(--spacing-4);
    text-align: right;
  }

  .timeline__item:nth-child(odd) .timeline__node {
    left: calc(-1 * var(--timeline-node-size) / 2);
  }

  .timeline__item:nth-child(even) .timeline__node {
    left: auto;
    right: calc(-1 * var(--timeline-node-size) / 2);
  }

  .timeline__item:nth-child(even) .timeline__content-header {
    flex-direction: row-reverse;
  }

  .timeline__item:nth-child(even) .timeline__content-tags {
    justify-content: flex-end;
  }

  .timeline__item:nth-child(odd) {
    transform: translateX(30px);
  }

  .timeline__item:nth-child(even) {
    transform: translateX(-30px);
  }

  .timeline__item--visible:nth-child(odd),
  .timeline__item--visible:nth-child(even) {
    transform: translateX(0);
  }
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */

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

.pricing__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.pricing__title {
  margin-bottom: var(--spacing-4);
}

.pricing__subtitle {
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.pricing__timeline {
  position: relative;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.pricing__line {
  display: none;
  position: absolute;
  top: 50%;
  left: 5%;
  right: 5%;
  height: var(--timeline-line-width);
  background-color: var(--timeline-line-color);
  transform: translateY(-50%);
  border-radius: var(--border-radius-full);
}

.pricing__line-progress {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 0;
  background: linear-gradient(90deg, var(--color-primary-500), var(--color-secondary-500));
  border-radius: var(--border-radius-full);
  transition: width var(--transition-duration-slow) var(--transition-timing-ease-out);
}

.pricing__cards {
  display: grid;
  gap: var(--spacing-8);
}

.pricing__card {
  position: relative;
  background-color: var(--color-bg-primary);
  border: var(--border-width-thin) solid var(--color-neutral-200);
  border-radius: var(--border-radius-2xl);
  padding: var(--spacing-8);
  text-align: center;
  transition: all var(--transition-duration-normal) var(--transition-timing-ease);
}

.pricing__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.pricing__card--featured {
  border-color: var(--color-primary-300);
  background: linear-gradient(
    180deg,
    var(--color-primary-50) 0%,
    var(--color-bg-primary) 100%
  );
}

.pricing__card--featured::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-secondary-500));
  border-radius: var(--border-radius-2xl);
  z-index: -1;
}

.pricing__card-badge {
  position: absolute;
  top: calc(-1 * var(--spacing-3));
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-1) var(--spacing-4);
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-secondary-500));
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--border-radius-full);
  white-space: nowrap;
}

.pricing__card-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-neutral-100);
  border-radius: var(--border-radius-full);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-4);
}

.pricing__card--featured .pricing__card-step {
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-secondary-500));
  color: var(--color-text-inverse);
}

.pricing__card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-2);
}

.pricing__card-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-6);
}

.pricing__card-price {
  margin-bottom: var(--spacing-6);
}

.pricing__card-price-value {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.pricing__card-price-value span {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-secondary);
}

.pricing__card-features {
  margin-bottom: var(--spacing-8);
  text-align: left;
}

.pricing__card-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-2) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.pricing__card-feature-icon {
  width: 20px;
  height: 20px;
  color: var(--color-success);
  flex-shrink: 0;
}

.pricing__card-feature--disabled {
  color: var(--color-neutral-400);
}

.pricing__card-feature--disabled .pricing__card-feature-icon {
  color: var(--color-neutral-300);
}

@media (min-width: 768px) {
  .pricing__line {
    display: block;
  }

  .pricing__cards {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
    align-items: center;
  }

  .pricing__card--featured {
    padding: var(--spacing-10) var(--spacing-8);
  }
}

/* ==========================================================================
   About Section
   ========================================================================== */

.about {
  position: relative;
  overflow: hidden;
}

.about__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    var(--color-neutral-900) 0%,
    var(--color-neutral-800) 100%
  );
}

.about__bg-timeline {
  position: absolute;
  left: 10%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    180deg,
    transparent 0%,
    var(--color-primary-500) 20%,
    var(--color-secondary-500) 80%,
    transparent 100%
  );
  opacity: 0.3;
}

.about__bg-timeline::before,
.about__bg-timeline::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  background-color: var(--color-primary-400);
  border-radius: var(--border-radius-full);
  left: 50%;
  transform: translateX(-50%);
}

.about__bg-timeline::before {
  top: 30%;
}

.about__bg-timeline::after {
  bottom: 30%;
}

.about__container {
  position: relative;
  z-index: 1;
}

.about__content {
  display: grid;
  gap: var(--spacing-12);
  align-items: center;
}

.about__text {
  color: var(--color-text-inverse);
}

.about__label {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  background-color: rgba(14, 165, 233, 0.1);
  border: var(--border-width-thin) solid rgba(14, 165, 233, 0.2);
  border-radius: var(--border-radius-full);
  color: var(--color-primary-400);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-4);
}

.about__title {
  margin-bottom: var(--spacing-6);
}

.about__description {
  color: var(--color-neutral-300);
  margin-bottom: var(--spacing-8);
}

.about__milestones {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.about__milestone {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-4);
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-duration-fast) var(--transition-timing-ease);
}

.about__milestone:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.about__milestone-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-secondary-500));
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.about__milestone-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-text-inverse);
}

.about__milestone-content h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-1);
}

.about__milestone-content p {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-400);
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-6);
}

.about__stat {
  text-align: center;
  padding: var(--spacing-6);
  background-color: rgba(255, 255, 255, 0.05);
  border: var(--border-width-thin) solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-xl);
}

.about__stat-value {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  background: linear-gradient(135deg, var(--color-primary-400), var(--color-secondary-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-2);
}

.about__stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-400);
}

@media (min-width: 1024px) {
  .about__content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
  }
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact {
  position: relative;
}

.contact__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.contact__title {
  margin-bottom: var(--spacing-4);
}

.contact__subtitle {
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact__content {
  display: grid;
  gap: var(--spacing-12);
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.contact__timeline {
  position: relative;
  padding-left: var(--spacing-12);
}

.contact__timeline-line {
  position: absolute;
  left: 16px;
  top: 0;
  bottom: 0;
  width: var(--timeline-line-width);
  background: linear-gradient(
    180deg,
    var(--color-primary-500) 0%,
    var(--color-secondary-500) 100%
  );
  border-radius: var(--border-radius-full);
}

.contact__methods {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-6);
}

.contact__method {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
  padding: var(--spacing-6);
  background-color: var(--color-bg-primary);
  border: var(--border-width-thin) solid var(--color-neutral-200);
  border-radius: var(--border-radius-xl);
  transition: all var(--transition-duration-normal) var(--transition-timing-ease);
}

.contact__method:hover {
  border-color: var(--color-primary-300);
  box-shadow: var(--shadow-lg);
}

.contact__method::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--spacing-12) - var(--timeline-line-width) / 2 + 16px);
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  background-color: var(--color-primary-500);
  border: 3px solid var(--color-bg-primary);
  border-radius: var(--border-radius-full);
  box-shadow: var(--shadow-sm);
}

.contact__method-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary-100), var(--color-secondary-100));
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact__method-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary-600);
}

.contact__method-content h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-1);
}

.contact__method-content p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-2);
}

.contact__method-link {
  color: var(--color-primary-500);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.contact__method-link:hover {
  color: var(--color-primary-600);
}

.contact__form-wrapper {
  background-color: var(--color-bg-primary);
  border: var(--border-width-thin) solid var(--color-neutral-200);
  border-radius: var(--border-radius-2xl);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-lg);
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-6);
}

.contact__form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.contact__form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.contact__form-input,
.contact__form-textarea {
  padding: var(--spacing-4);
  background-color: var(--color-bg-secondary);
  border: var(--border-width-thin) solid var(--color-neutral-200);
  border-radius: var(--border-radius-lg);
  font-family: inherit;
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  transition: all var(--transition-duration-fast) var(--transition-timing-ease);
}

.contact__form-input:focus,
.contact__form-textarea:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.contact__form-textarea {
  min-height: 150px;
  resize: vertical;
}

.contact__form-submit {
  align-self: flex-start;
}

@media (min-width: 1024px) {
  .contact__content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background-color: var(--color-neutral-900);
  color: var(--color-text-inverse);
  padding-top: var(--spacing-16);
  padding-bottom: var(--spacing-8);
}

.footer__content {
  display: grid;
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-12);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-4);
}

.footer__logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-secondary-500));
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-inverse);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

.footer__logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

.footer__logo-text span {
  color: var(--color-primary-400);
}

.footer__description {
  color: var(--color-neutral-400);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-6);
}

.footer__social {
  display: flex;
  gap: var(--spacing-3);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-duration-fast) var(--transition-timing-ease);
}

.footer__social-link:hover {
  background-color: var(--color-primary-500);
  transform: translateY(-2px);
}

.footer__social-link svg {
  width: 20px;
  height: 20px;
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-8);
}

.footer__column h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-neutral-400);
  margin-bottom: var(--spacing-4);
}

.footer__column ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.footer__column a {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-300);
  transition: color var(--transition-duration-fast) var(--transition-timing-ease);
}

.footer__column a:hover {
  color: var(--color-primary-400);
}

.footer__bottom {
  padding-top: var(--spacing-8);
  border-top: var(--border-width-thin) solid var(--color-neutral-800);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  text-align: center;
}

.footer__copyright {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-500);
}

.footer__legal {
  display: flex;
  justify-content: center;
  gap: var(--spacing-6);
}

.footer__legal a {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-500);
}

.footer__legal a:hover {
  color: var(--color-primary-400);
}

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

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

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ==========================================================================
   Scroll Animations
   ========================================================================== */

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--transition-duration-normal) var(--transition-timing-ease-out);
}

.animate-on-scroll--visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-on-scroll--delay-1 {
  transition-delay: 100ms;
}

.animate-on-scroll--delay-2 {
  transition-delay: 200ms;
}

.animate-on-scroll--delay-3 {
  transition-delay: 300ms;
}

.animate-on-scroll--delay-4 {
  transition-delay: 400ms;
}