/* ==========================================================================
   RapidLaunch Digital - Main Stylesheet
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables
   -------------------------------------------------------------------------- */
:root {
  /* Brand Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1e40af;
  --color-primary-light: #3b82f6;
  --color-accent: #10b981;
  --color-accent-dark: #059669;

  /* Neutral Colors */
  --color-dark: #1f2937;
  --color-gray-700: #374151;
  --color-gray-600: #4b5563;
  --color-gray-500: #6b7280;
  --color-gray-400: #9ca3af;
  --color-gray-300: #d1d5db;
  --color-gray-200: #e5e7eb;
  --color-gray-100: #f3f4f6;
  --color-light: #f1f5f9;
  --color-white: #ffffff;

  /* Semantic Colors */
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-warning: #f59e0b;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

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

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

  /* Borders */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
}

/* --------------------------------------------------------------------------
   Skip Link (Accessibility)
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--spacing-md);
  outline: 2px solid var(--color-white);
  outline-offset: 2px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
}

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

ul,
ol {
  list-style: none;
}

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

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--spacing-md);
}

p:last-child {
  margin-bottom: 0;
}

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

.text-accent {
  color: var(--color-accent);
}

.text-gray {
  color: var(--color-gray-600);
}

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

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

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

/* --------------------------------------------------------------------------
   Layout Utilities
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-4xl) 0;
}

.section--gray {
  background-color: var(--color-light);
}

.section--dark {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-white);
}

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

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

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

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.flex {
  display: flex;
}

.flex--center {
  align-items: center;
  justify-content: center;
}

.flex--between {
  align-items: center;
  justify-content: space-between;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
}

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

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

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

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

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

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

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

.btn--white:hover {
  background-color: var(--color-gray-100);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

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

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.logo span {
  color: var(--color-dark);
}

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

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

.nav__link {
  font-weight: 500;
  color: var(--color-gray-600);
  transition: color var(--transition-fast);
  padding: var(--spacing-sm) 0;
}

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

.nav__cta {
  margin-left: var(--spacing-md);
}

/* Mobile Menu Button */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-dark);
  transition: all var(--transition-fast);
}

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

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

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

/* --------------------------------------------------------------------------
   Main Content
   -------------------------------------------------------------------------- */
main {
  flex: 1;
  margin-top: var(--header-height);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  padding: var(--spacing-4xl) 0;
  background: linear-gradient(135deg, var(--color-light) 0%, var(--color-white) 100%);
}

.hero__content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.hero__title {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-lg);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-xl);
}

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

/* --------------------------------------------------------------------------
   Page Headers
   -------------------------------------------------------------------------- */
.page-header {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-light);
  text-align: center;
}

.page-header__title {
  margin-bottom: var(--spacing-sm);
}

.page-header__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
}

/* --------------------------------------------------------------------------
   Feature Cards
   -------------------------------------------------------------------------- */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

.feature {
  text-align: center;
  padding: var(--spacing-xl);
}

.feature__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-lg);
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
}

.feature__title {
  margin-bottom: var(--spacing-sm);
}

.feature__text {
  color: var(--color-gray-600);
}

/* --------------------------------------------------------------------------
   Service Cards
   -------------------------------------------------------------------------- */
.service-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-200);
  display: flex;
  flex-direction: column;
}

.service-card .btn {
  margin-top: auto;
}

.service-card__header {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-gray-200);
}

.service-card__title {
  margin-bottom: var(--spacing-sm);
}

.service-card__price {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-primary);
}

.service-card__price span {
  font-size: var(--font-size-base);
  font-weight: 400;
  color: var(--color-gray-500);
}

.service-card__description {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-lg);
}

.service-card__features {
  margin-bottom: var(--spacing-xl);
}

.service-card__features li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  color: var(--color-gray-700);
}

.service-card__features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   Pricing Cards
   -------------------------------------------------------------------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
  max-width: 900px;
  margin: 0 auto;
}

.pricing-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--color-gray-200);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.pricing-card--featured {
  border-color: var(--color-primary);
  position: relative;
}

.pricing-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.pricing-card__name {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.pricing-card__price {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.pricing-card__period {
  color: var(--color-gray-500);
  margin-bottom: var(--spacing-lg);
}

.pricing-card__features {
  text-align: left;
  margin-bottom: var(--spacing-xl);
}

.pricing-card__features li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  color: var(--color-gray-700);
}

.pricing-card__features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.pricing-card .btn {
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   About Section
   -------------------------------------------------------------------------- */
.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-content p {
  font-size: var(--font-size-lg);
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-lg);
}

.values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
}

.value {
  padding: var(--spacing-lg);
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.value__title {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.value__text {
  color: var(--color-gray-600);
}

/* --------------------------------------------------------------------------
   FAQ Accordion
   -------------------------------------------------------------------------- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-gray-200);
}

.faq-question {
  width: 100%;
  padding: var(--spacing-lg) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-lg);
  font-weight: 600;
  text-align: left;
  color: var(--color-dark);
  cursor: pointer;
  transition: color var(--transition-fast);
}

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

.faq-question::after {
  content: "+";
  font-size: var(--font-size-xl);
  font-weight: 400;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-question::after {
  content: "−";
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-answer__content {
  padding-bottom: var(--spacing-lg);
  color: var(--color-gray-600);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

/* --------------------------------------------------------------------------
   Contact Form
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
}

.contact-form {
  background-color: var(--color-white);
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--color-dark);
}

.form-label span {
  color: var(--color-error);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-error {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

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

.contact-info {
  padding: var(--spacing-xl);
}

.contact-info__title {
  margin-bottom: var(--spacing-lg);
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-info__icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info__label {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.contact-info__value {
  color: var(--color-gray-600);
}

.contact-info__value a {
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.contact-info__value a:hover {
  color: var(--color-primary-dark);
}

/* Form Messages */
.form-message {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-lg);
  display: none;
}

.form-message--success {
  background-color: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.form-message--error {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.form-message.show {
  display: block;
}

/* Next Steps Box */
.next-steps {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-lg);
  background: var(--color-light);
  border-radius: var(--border-radius-md);
}

.next-steps__title {
  margin-bottom: var(--spacing-sm);
}

.next-steps__list {
  padding-left: var(--spacing-lg);
  color: var(--color-gray-600);
  counter-reset: step-counter;
}

.next-steps__list li {
  margin-bottom: var(--spacing-sm);
  position: relative;
  list-style: decimal;
}

.next-steps__list li:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Legal Pages (Privacy, Terms)
   -------------------------------------------------------------------------- */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h2 {
  font-size: var(--font-size-2xl);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p {
  color: var(--color-gray-700);
}

.legal-content ul {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-lg);
}

.legal-content li {
  position: relative;
  padding-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  color: var(--color-gray-700);
}

.legal-content li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   CTA Section
   -------------------------------------------------------------------------- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
  padding: var(--spacing-4xl) 0;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   Guarantee Section
   -------------------------------------------------------------------------- */
.guarantee {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-2xl);
  background-color: var(--color-light);
  border-radius: var(--border-radius-lg);
  border: 2px solid var(--color-gray-200);
}

.guarantee__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  background-color: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.guarantee__title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-dark);
}

.guarantee__text {
  color: var(--color-gray-600);
  font-size: var(--font-size-lg);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background-color: var(--color-dark);
  color: var(--color-gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-2xl);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

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

.footer__tagline {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  margin-bottom: var(--spacing-md);
}

.footer__description {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
}

.footer__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.footer__links li {
  margin-bottom: var(--spacing-sm);
}

.footer__links a {
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

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

.footer__contact p {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
}

.footer__bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-700);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-sm);
}

.footer__legal {
  display: flex;
  gap: var(--spacing-lg);
}

.footer__legal a {
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Responsive Styles
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .features {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
  }

  .footer__brand {
    grid-column: span 2;
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.25rem;
    --font-size-4xl: 1.875rem;
    --font-size-3xl: 1.5rem;
  }

  .nav__list {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    gap: 0;
  }

  .nav__list.active {
    display: flex;
  }

  .nav__list li {
    width: 100%;
  }

  .nav__link {
    display: block;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-200);
  }

  .menu-toggle {
    display: flex;
    order: 2;
  }

  .nav__cta {
    order: 1;
    margin-left: 0;
    margin-right: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
  }

  .hero__cta {
    flex-direction: column;
    align-items: center;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .values {
    grid-template-columns: 1fr;
  }

  .grid--3 {
    grid-template-columns: 1fr;
  }

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

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .footer__brand {
    grid-column: span 1;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .features {
    grid-template-columns: 1fr;
  }

  .btn--lg {
    width: 100%;
  }
}

/* --------------------------------------------------------------------------
   404 Error Page
   -------------------------------------------------------------------------- */
.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-content {
  text-align: center;
  max-width: 500px;
}

.error-code {
  font-size: 8rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--spacing-md);
}

.error-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
}

.error-text {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-xl);
}

.error-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 480px) {
  .error-code {
    font-size: 5rem;
  }

  .error-actions {
    flex-direction: column;
  }

  .error-actions .btn {
    width: 100%;
  }
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }

/* Width utilities */
.w-full { width: 100%; }

/* Alignment utilities */
.align-start { align-items: start; }
.align-stretch { align-items: stretch; }

/* Text alignment in cards */
.text-center-card { text-align: center; }

/* Price size variant */
.price-sm {
  font-size: var(--font-size-2xl);
}