/* ========================================
   CSS RESET & BASE
   ======================================== */

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ========================================
   CSS VARIABLES (From Branding Docs)
   ======================================== */

:root {
  /* Colors: Brand */
  --color-primary: #3F6B5F;
  --color-primary-light: #569281;
  --color-primary-ultra-light: #7BA99D;
  --color-primary-dark: #28443D;
  --color-primary-ultra-dark: #121E1B;

  --color-accent: #5FAF9B;
  --color-accent-light: #88C3B4;
  --color-accent-ultra-light: #B4D5CD;
  --color-accent-dark: #468B7A;

  --color-action: #E26D5C;
  --color-action-light: #EB9C90;
  --color-action-dark: #D93E28;

  --color-secondary: #2F4F46;
  --color-secondary-light: #467568;

  /* Colors: Neutrals */
  --color-neutral-0: #FFFFFF;
  --color-neutral-50: #F4F8F7;
  --color-neutral-200: #E5E7EB;
  --color-neutral-400: #9CA3AF;
  --color-neutral-900: #1F2D2A;

  /* Colors: Status */
  --color-success: #4CAF8A;
  --color-warning: #F2B05E;
  --color-error: #C94A4A;

  /* Fonts */
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Type Scale */
  --text-xs: 0.75rem;
  --text-s: 0.875rem;
  --text-m: 1rem;
  --text-l: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.5rem;
  --text-4xl: 3rem;

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-loose: 1.7;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;
  --space-36: 9rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(31, 45, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(31, 45, 42, 0.1), 0 2px 4px -1px rgba(31, 45, 42, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(31, 45, 42, 0.1), 0 4px 6px -2px rgba(31, 45, 42, 0.05);

  /* Layout */
  --max-width: 1200px;
  --header-height: 120px;
}

/* ========================================
   BASE STYLES
   ======================================== */

body {
  font-family: var(--font-body);
  font-size: var(--text-m);
  line-height: var(--leading-normal);
  color: var(--color-neutral-900);
  background-color: var(--color-neutral-0);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  background: var(--color-primary);
  color: white;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transform: translateY(-200%);
  transition: transform 0.2s;
  z-index: 10000;
}

.skip-link:focus {
  transform: translateY(0);
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--leading-tight);
  color: var(--color-neutral-900);
}

.section-title {
  font-size: var(--text-2xl);
  text-align: center;
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .section-title {
    font-size: var(--text-3xl);
  }
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-m);
  font-weight: var(--font-weight-medium);
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-body);
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-l);
}

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

.btn-primary:hover {
  background-color: var(--color-action-dark);
  border-color: var(--color-action-dark);
}

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

.btn-secondary:hover {
  background-color: var(--color-neutral-50);
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */

.header {
  position: sticky;
  top: 0;
  background-color: var(--color-neutral-0);
  border-bottom: 1px solid var(--color-neutral-200);
  z-index: 1000;
  height: var(--header-height);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.nav-brand .logo {
  width: 200px;
  height: auto;
  display: block;
}

@media (min-width: 768px) {
  .nav-brand .logo {
    width: 275px;
  }
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.hamburger {
  position: relative;
  width: 24px;
  height: 2px;
  background-color: var(--color-neutral-900);
  transition: transform 0.3s;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: var(--color-neutral-900);
  transition: transform 0.3s;
}

.hamburger::before {
  top: -7px;
}

.hamburger::after {
  top: 7px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.nav-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--color-neutral-0);
  border-bottom: 1px solid var(--color-neutral-200);
  padding: var(--space-6) var(--space-4);
  transform: translateY(-100%);
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
  pointer-events: none;
}

.nav-menu.active {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.nav-list a {
  display: block;
  color: var(--color-neutral-900);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  padding: var(--space-2) 0;
  transition: color 0.2s;
}

.nav-list a:hover {
  color: var(--color-primary);
}

.nav-cta {
  width: 100%;
}

/* Desktop Nav */
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-menu {
    position: static;
    display: flex;
    align-items: center;
    gap: var(--space-8);
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
    padding: 0;
    border: none;
  }

  .nav-list {
    flex-direction: row;
    margin-bottom: 0;
  }

  .nav-cta {
    width: auto;
  }
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  padding: var(--space-12) 0;
  background: linear-gradient(180deg, var(--color-neutral-50) 0%, var(--color-neutral-0) 100%);
  min-height: 600px;
  display: flex;
  align-items: center;
}

@media (min-width: 768px) {
  .hero {
    padding: var(--space-16) 0;
    min-height: 700px;
  }
}

.hero-content {
  text-align: center;
  margin-bottom: var(--space-12);
}

.hero-title {
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-6);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.2;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 2.75rem;
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: 3.5rem;
  }
}

.hero-subtitle {
  font-size: var(--text-l);
  color: var(--color-neutral-400);
  margin-bottom: var(--space-8);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .hero-cta {
    flex-direction: row;
    justify-content: center;
  }
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-s);
  color: var(--color-neutral-400);
}

/* Product Preview */
.product-preview {
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--color-neutral-0);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.preview-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4);
  background-color: var(--color-neutral-50);
  border-bottom: 1px solid var(--color-neutral-200);
}

.preview-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-neutral-200);
}

.preview-body {
  padding: var(--space-8);
}

.preview-title {
  font-size: var(--text-l);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-6);
  color: var(--color-neutral-900);
}

.preview-stages {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

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

.preview-stage {
  background-color: var(--color-neutral-50);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.stage-label {
  font-size: var(--text-s);
  font-weight: var(--font-weight-medium);
  color: var(--color-neutral-400);
  margin-bottom: var(--space-2);
}

.stage-count {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.stage-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.stage-card {
  height: 40px;
  background-color: var(--color-neutral-0);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-neutral-200);
}

.preview-actions {
  display: flex;
  gap: var(--space-3);
}

.preview-btn {
  height: 36px;
  width: 100px;
  background-color: var(--color-accent);
  border-radius: var(--radius-sm);
  opacity: 0.6;
}

.preview-btn:first-child {
  background-color: var(--color-action);
}

/* ========================================
   SOCIAL PROOF
   ======================================== */

.social-proof {
  padding: var(--space-36) 0;
  background-color: var(--color-neutral-50);
}

.testimonials {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

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

.testimonial-card {
  background-color: var(--color-neutral-0);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.stars {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
  color: var(--color-warning);
}

.testimonial-text {
  font-size: var(--text-m);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-4);
  color: var(--color-neutral-900);
}

.testimonial-author {
  font-size: var(--text-s);
  font-weight: var(--font-weight-medium);
  color: var(--color-neutral-400);
}

/* ========================================
   FEATURES
   ======================================== */

.features {
  padding: var(--space-36) 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

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

@media (min-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  text-align: center;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background-color: var(--color-neutral-50);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.feature-title {
  font-size: var(--text-l);
  margin-bottom: var(--space-3);
}

.feature-description {
  color: var(--color-neutral-400);
  line-height: var(--leading-loose);
}

/* ========================================
   HOW IT WORKS
   ======================================== */

.how-it-works {
  padding: var(--space-36) 0;
  background-color: var(--color-neutral-50);
}

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-12);
  }
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .step {
    align-items: flex-start;
    text-align: left;
  }
}

.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: white;
  font-size: var(--text-l);
  font-weight: var(--font-weight-bold);
  border-radius: 50%;
}

.step-content {
  flex: 1;
}

.step-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.step-description {
  color: var(--color-neutral-400);
  line-height: var(--leading-loose);
}

.week-one {
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--color-neutral-0);
  padding: var(--space-8);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.week-one-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-6);
  text-align: center;
}

.checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.check-icon {
  flex-shrink: 0;
  color: var(--color-success);
  margin-top: 2px;
}

/* ========================================
   FAQ
   ======================================== */

.faq {
  padding: var(--space-36) 0;
}

.accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.accordion-item {
  background-color: var(--color-neutral-0);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion-button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-6);
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: var(--text-l);
  font-weight: var(--font-weight-semibold);
  text-align: left;
  color: var(--color-neutral-900);
  cursor: pointer;
  transition: background-color 0.2s;
}

.accordion-button:hover {
  background-color: var(--color-neutral-50);
}

.accordion-icon {
  flex-shrink: 0;
  color: var(--color-primary);
  transition: transform 0.3s;
}

.accordion-button[aria-expanded="true"] .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  padding: 0 var(--space-6) var(--space-6);
}

.accordion-content p {
  color: var(--color-neutral-400);
  line-height: var(--leading-loose);
}

/* ========================================
   FINAL CTA + CONTACT FORM
   ======================================== */

.final-cta {
  padding: var(--space-36) 0;
  background: linear-gradient(180deg, var(--color-neutral-0) 0%, var(--color-neutral-50) 100%);
}

.cta-content {
  text-align: center;
  margin-bottom: var(--space-12);
}

.cta-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
}

.cta-subtitle {
  font-size: var(--text-l);
  color: var(--color-neutral-400);
}

.contact-options {
  max-width: 600px;
  margin: 0 auto;
}

.contact-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .contact-buttons {
    flex-direction: row;
    justify-content: center;
  }
}

.contact-divider {
  text-align: center;
  position: relative;
  margin-bottom: var(--space-8);
}

.contact-divider span {
  display: inline-block;
  background-color: var(--color-neutral-50);
  padding: 0 var(--space-4);
  color: var(--color-neutral-400);
  font-size: var(--text-s);
  position: relative;
  z-index: 1;
}

.contact-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--color-neutral-200);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

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

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

.form-group label {
  font-size: var(--text-s);
  font-weight: var(--font-weight-medium);
  color: var(--color-neutral-900);
}

.required {
  color: var(--color-error);
}

.form-group input,
.form-group textarea {
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-m);
  color: var(--color-neutral-900);
  background-color: var(--color-neutral-0);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
}

.form-group input.error,
.form-group textarea.error {
  border-color: var(--color-error);
}

.error-message {
  font-size: var(--text-s);
  color: var(--color-error);
}

.form-success {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  background-color: var(--color-neutral-0);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.form-success svg {
  color: var(--color-success);
  margin-bottom: var(--space-6);
}

.form-success h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}

.form-success p {
  color: var(--color-neutral-400);
  font-size: var(--text-l);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  padding: var(--space-12) 0;
  background-color: var(--color-neutral-900);
  color: var(--color-neutral-400);
}

.footer-content {
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--color-neutral-400);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--color-neutral-0);
}

.footer-copyright {
  font-size: var(--text-s);
}