/* ===== CSS Custom Properties (Design Tokens) ===== */
:root {
  /* Colors from design doc */
  --color-primary: #1A6B5C;
  --color-primary-dark: #145649;
  --color-primary-light: #228B75;
  --color-secondary: #E8A830;
  --color-secondary-dark: #D49520;
  --color-secondary-light: #F0BC55;
  --color-accent: #7CB69D;
  --color-accent-light: #A3D4BE;
  --color-bg: #F8F6F2;
  --color-bg-alt: #F0EDE7;
  --color-text: #2D3436;
  --color-text-light: #636E72;
  --color-text-lighter: #B2BEC3;
  --color-white: #FFFFFF;
  --color-alert: #E07A5F;

  /* Typography */
  --font-heading: 'Nunito', 'Poppins', sans-serif;
  --font-body: 'Inter', 'Open Sans', sans-serif;

  /* Font sizes - fluid scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;

  /* Borders & Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

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

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

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

input, textarea {
  font: inherit;
  border: none;
  outline: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

/* ===== Utility Classes ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section {
  padding: var(--space-5xl) 0;
}

.section-title {
  font-size: var(--text-4xl);
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-size: var(--text-lg);
  text-align: center;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}

/* Button styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-base);
  transition: all var(--transition-base);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-cta {
  background-color: var(--color-secondary);
  color: var(--color-text);
  font-size: var(--text-lg);
  padding: 1rem 2.25rem;
}

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

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

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Scroll reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background-color: rgba(255, 255, 255, 0.33);
  z-index: 1000;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

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

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--color-primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  color: #0F4037;
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link:hover,
.nav__link.active {
  color: #0A2B24;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #0F4037;
  transition: width var(--transition-base);
}

.nav__link:hover::after {
  width: 100%;
}

.nav.scrolled .nav__link {
  color: var(--color-text-light);
}

.nav.scrolled .nav__link:hover,
.nav.scrolled .nav__link.active {
  color: var(--color-primary);
}

.nav.scrolled .nav__link::after {
  background-color: var(--color-primary);
}

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

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--text-sm);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-base);
  border-radius: 2px;
}

/* Mobile nav */
@media (max-width: 767px) {
  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-white);
    flex-direction: column;
    justify-content: flex-start;
    padding-top: var(--space-2xl);
    gap: var(--space-xl);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
  }

  .nav__links.open {
    transform: translateX(0);
  }

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

  .nav__hamburger {
    display: flex;
  }

  /* Hamburger animation when open */
  .nav__hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

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

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

/* Tablet: keep nav links but tighten spacing */
@media (min-width: 768px) and (max-width: 1199px) {
  .nav__links {
    gap: var(--space-lg);
  }
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

.hero__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero__video--mobile {
  display: none;
}

@media (max-width: 767px) {
  .hero__video--desktop {
    display: none;
  }

  .hero__video--mobile {
    display: block;
    object-position: center bottom;
  }
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(to right, rgba(255, 255, 255, 0.7), transparent);
  z-index: 1;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: flex-start;
  min-height: 100vh;
  padding-top: calc(var(--nav-height) + 20vh);
  padding-bottom: var(--space-4xl);
}

.hero__content {
  max-width: 600px;
}

.hero__title {
  font-size: var(--text-6xl);
  line-height: 1.1;
  margin-bottom: var(--space-xl);
  text-shadow: 0 1px 3px rgba(255, 255, 255, 0.4);
}

.hero__title-line1 {
  display: block;
  color: var(--color-primary);
}

.hero__title-line2 {
  display: block;
  color: var(--color-secondary);
}

.hero__subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: var(--space-2xl);
  max-width: 520px;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
}

.hero__ctas {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

@media (max-width: 767px) {
  .hero__inner {
    text-align: center;
    justify-content: center;
  }

  .hero__content {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero__title {
    font-size: var(--text-4xl);
  }

  .hero__subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__ctas {
    justify-content: center;
  }
}

@media (min-width: 768px) and (max-width: 1199px) {
  .hero__title {
    font-size: var(--text-5xl);
  }
}

/* ===== Problems Section ===== */
.problems {
  background-color: var(--color-white);
  padding-bottom: var(--space-3xl);
}

.problems + .section {
  padding-top: var(--space-3xl);
}

.problems__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.problems__heading {
  color: var(--color-text);
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
}

.problems__subheading {
  color: var(--color-text-light);
  font-size: var(--text-xl);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

.problems__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
}

.problems__card {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
  border-radius: var(--radius-xl);
  background-color: var(--color-bg);
  border: 1px solid var(--color-text-lighter);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.problems__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background-color: var(--color-bg-alt);
}

.problems__icon {
  margin-bottom: var(--space-lg);
  display: flex;
  justify-content: center;
}

.problems__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.problems__desc {
  color: var(--color-text-light);
  line-height: 1.7;
}

.problems__bridge {
  text-align: center;
  margin-top: var(--space-3xl);
}

.problems__bridge-text {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: var(--space-xl);
}

@media (max-width: 767px) {
  .problems__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

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

@media (min-width: 768px) and (max-width: 1199px) {
  .problems__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
  }
}

/* ===== Features ===== */
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
  margin-bottom: var(--space-4xl);
}

.feature:last-child {
  margin-bottom: 0;
}

.feature--reversed {
  direction: rtl;
}

.feature--reversed > * {
  direction: ltr;
}

.feature__title {
  font-size: var(--text-3xl);
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.feature__desc {
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.feature__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.feature__list li {
  color: var(--color-text);
  font-weight: 500;
  padding-left: var(--space-xl);
  position: relative;
}

.feature__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 16px;
  height: 16px;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
  opacity: 0.3;
}

.feature__list li::after {
  content: '\2713';
  position: absolute;
  left: 3px;
  top: 2px;
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 700;
}

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

.feature__image svg {
  width: 100%;
  max-width: 300px;
  height: auto;
}

@media (max-width: 767px) {
  .feature {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
  }

  .feature--reversed {
    direction: ltr;
  }

  .feature__image {
    order: -1;
  }

  .feature__list {
    align-items: center;
  }
}

/* ===== How It Works ===== */
.how-it-works {
  background-color: var(--color-white);
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}

.step {
  flex: 1;
  max-width: 280px;
  text-align: center;
  padding: var(--space-xl);
  position: relative;
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: var(--color-secondary);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--text-lg);
  margin-bottom: var(--space-lg);
}

.step__icon {
  margin-bottom: var(--space-lg);
  display: flex;
  justify-content: center;
}

.step__title {
  font-size: var(--text-xl);
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.step__desc {
  color: var(--color-text-light);
  line-height: 1.6;
  font-size: var(--text-sm);
}

.step__connector {
  display: flex;
  align-items: center;
  padding-top: 100px;
  width: 80px;
  flex-shrink: 0;
}

.step__connector svg {
  width: 100%;
}

@media (max-width: 767px) {
  .steps {
    flex-direction: column;
    align-items: center;
  }

  .step__connector {
    transform: rotate(90deg);
    padding-top: 0;
    width: 60px;
    height: 40px;
  }
}

/* ===== Pricing ===== */
.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  align-items: start;
}

.pricing__card {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  text-align: center;
  border: 2px solid var(--color-bg-alt);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
}

.pricing__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing__card--featured {
  border-color: var(--color-primary);
  transform: scale(1.05);
  box-shadow: var(--shadow-xl);
}

.pricing__card--featured:hover {
  transform: scale(1.05) translateY(-4px);
}

.pricing__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  padding: 0.25rem 1.25rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing__header {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-bg-alt);
}

.pricing__name {
  font-size: var(--text-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.pricing__price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
  margin-bottom: var(--space-sm);
}

.pricing__currency {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
}

.pricing__amount {
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.pricing__period {
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

.pricing__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

.pricing__features {
  margin-bottom: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.pricing__features li {
  font-size: var(--text-sm);
  color: var(--color-text);
  padding-left: var(--space-xl);
  position: relative;
  text-align: left;
}

.pricing__features li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.pricing__cta {
  width: 100%;
}

@media (max-width: 767px) {
  .pricing__grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .pricing__card--featured {
    transform: scale(1);
  }

  .pricing__card--featured:hover {
    transform: translateY(-4px);
  }
}

/* ===== Testimonials ===== */
.testimonials {
  background-color: var(--color-white);
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.testimonial {
  background-color: var(--color-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.testimonial:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.testimonial__stars {
  color: var(--color-secondary);
  font-size: var(--text-lg);
  margin-bottom: var(--space-lg);
  letter-spacing: 2px;
}

.testimonial__quote {
  font-style: italic;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  font-size: var(--text-base);
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.testimonial__avatar {
  flex-shrink: 0;
}

.testimonial__name {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text);
}

.testimonial__role {
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

@media (max-width: 767px) {
  .testimonials__grid {
    grid-template-columns: 1fr;
  }
}

/* ===== FAQ ===== */
.faq__list {
  max-width: 750px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid var(--color-bg-alt);
}

.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-xl) 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
  text-align: left;
  transition: color var(--transition-fast);
}

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

.faq__chevron {
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--color-text-light);
}

.faq__item.open .faq__chevron {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq__item.open .faq__answer {
  max-height: 300px;
  padding-bottom: var(--space-xl);
}

.faq__answer p {
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== Contact ===== */
.contact {
  background-color: var(--color-white);
}

.contact__form {
  max-width: 650px;
  margin: 0 auto;
}

.contact__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.contact__field {
  margin-bottom: var(--space-lg);
}

.contact__label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.contact__input {
  width: 100%;
  padding: 0.875rem var(--space-lg);
  background-color: var(--color-bg);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.contact__input::placeholder {
  color: var(--color-text-lighter);
}

.contact__input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 107, 92, 0.1);
}

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

.contact__form .btn {
  width: 100%;
  margin-top: var(--space-md);
}

@media (max-width: 767px) {
  .contact__row {
    grid-template-columns: 1fr;
  }
}

/* ===== Footer ===== */
.footer {
  background-color: var(--color-text);
  color: var(--color-white);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer__top {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__brand .nav__logo-text {
  color: var(--color-white);
}

.footer__tagline {
  color: rgba(255, 255, 255, 0.6);
  margin-top: var(--space-md);
  font-size: var(--text-sm);
}

.footer__links {
  display: flex;
  gap: var(--space-3xl);
}

.footer__heading {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-lg);
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer__col a {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer__col a:hover {
  color: var(--color-white);
}

.footer__bottom {
  text-align: center;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.4);
}

@media (max-width: 767px) {
  .footer__top {
    flex-direction: column;
    text-align: center;
  }

  .footer__links {
    justify-content: center;
  }
}