/* ============================================
   EaseAmazon — Global Styles
   ============================================ */

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

:root {
  /* Brand Colors */
  --color-bg: #0a0a0a;
  --color-bg-elevated: #111111;
  --color-bg-card: #161616;
  --color-bg-card-hover: #1c1c1c;
  --color-surface: #1a1a1a;
  --color-border: #222222;
  --color-border-light: #2a2a2a;

  --color-text-primary: #f0f0f0;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #666666;

  --color-accent: #00a8ff;
  --color-accent-hover: #33bbff;
  --color-accent-subtle: rgba(0, 168, 255, 0.1);
  --color-accent-border: rgba(0, 168, 255, 0.25);

  --color-success: #39ff14;
  --color-warning: #fbbf24;
  --color-danger: #f87171;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --section-padding: 120px 0;
  --container-width: 1200px;
  --container-padding: 0 24px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Borders */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

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

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

.container--narrow {
  max-width: 800px;
}

.container--wide {
  max-width: 1400px;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

h4 {
  font-size: 1.125rem;
}

p {
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 680px;
}

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

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

/* --- Section --- */
.section {
  padding: var(--section-padding);
  position: relative;
}

.section--tight {
  padding: 80px 0;
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.section__label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--color-accent);
}

.section__title {
  margin-bottom: 20px;
}

.section__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font-primary);
  font-size: 0.9375rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(79, 140, 255, 0.3);
}

.btn--outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-light);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.btn--ghost {
  background: transparent;
  color: var(--color-accent);
  padding: 14px 0;
}

.btn--ghost:hover {
  color: var(--color-accent-hover);
}

.btn__arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 24px;
  transition: all var(--transition-base);
}

.nav--scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav__logo {
  display: flex;
  align-items: center;
  height: 56px;
}

.nav__logo img {
  height: 52px;
  width: auto;
  display: block;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-accent);
}

.nav__cta {
  font-size: 0.875rem;
}

/* Mobile Nav Toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-base);
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(79, 140, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  max-width: 720px;
}

.hero__title {
  margin-bottom: 24px;
}

.hero__subtitle {
  font-size: 1.1875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 600px;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Cards --- */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
}

.card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-light);
  transform: translateY(-2px);
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-accent);
  font-size: 1.25rem;
}

.card__title {
  margin-bottom: 12px;
}

.card__text {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-accent);
}

/* --- Grid Layouts --- */
.grid {
  display: grid;
  gap: 24px;
}

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

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

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

/* --- Stats --- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  padding: 48px 0;
}

.stat {
  text-align: center;
}

.stat__value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 8px;
}

.stat__label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* --- Comparison Table --- */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 40px 0;
  font-size: 0.9375rem;
}

.comparison-table thead {
  border-bottom: 1px solid var(--color-border-light);
}

.comparison-table th {
  padding: 16px 20px;
  text-align: left;
  font-weight: 500;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.comparison-table th:last-child {
  color: var(--color-accent);
  text-transform: none;
}

.comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table .check {
  color: var(--color-success);
  font-weight: 600;
}

.comparison-table .cross {
  color: var(--color-text-muted);
}

.comparison-table .partial {
  color: var(--color-warning);
}

.comparison-table td:last-child {
  color: var(--color-text-primary);
  font-weight: 500;
}

/* --- Proof / Case Study Cards --- */
.proof-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: all var(--transition-base);
}

.proof-card:hover {
  border-color: var(--color-accent-border);
  transform: translateY(-2px);
}

.proof-card__brand {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.proof-card__category {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.proof-card__results {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.proof-card__results li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

.proof-card__results li::before {
  content: '\2192';
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 1px;
}

/* --- Process Steps --- */
.process-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.process-step {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 24px;
  padding: 32px 0;
  position: relative;
}

.process-step__marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.process-step__number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  flex-shrink: 0;
}

.process-step__line {
  width: 1px;
  flex-grow: 1;
  background: var(--color-border);
  margin-top: 12px;
}

.process-step:last-child .process-step__line {
  display: none;
}

.process-step__content h3 {
  margin-bottom: 8px;
}

.process-step__content p {
  font-size: 0.9375rem;
}

/* --- CTA Section --- */
.cta-section {
  padding: 100px 0;
  text-align: center;
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(79, 140, 255, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__title {
  margin-bottom: 16px;
}

.cta-section__text {
  margin: 0 auto 32px;
  text-align: center;
}

/* --- Divider --- */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 0;
}

/* --- Footer --- */
.footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  margin-bottom: 48px;
}

.footer__brand p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 12px;
  max-width: 320px;
}

.footer__nav {
  display: flex;
  gap: 64px;
}

.footer__nav-group h4 {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.footer__nav-group ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__nav-group a {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.footer__nav-group a:hover {
  color: var(--color-text-primary);
}

.footer__bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__copyright {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* --- Form Styles --- */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 14px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: 0.9375rem;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.form-checkbox:hover {
  border-color: var(--color-border-light);
}

.form-checkbox input {
  accent-color: var(--color-accent);
}

.form-checkbox:has(input:checked) {
  border-color: var(--color-accent-border);
  background: var(--color-accent-subtle);
  color: var(--color-text-primary);
}

/* --- Engagement Model Cards --- */
.engagement-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
}

.engagement-card--featured {
  border-color: var(--color-accent-border);
}

.engagement-card--featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.engagement-card__name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.engagement-card__type {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.engagement-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.engagement-card__details {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.engagement-card__details li {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.engagement-card__details li::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

/* --- Page Header --- */
.page-header {
  padding: 160px 0 80px;
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(79, 140, 255, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

/* --- Service Section --- */
.service-block {
  padding: 80px 0;
  border-bottom: 1px solid var(--color-border);
}

.service-block:last-child {
  border-bottom: none;
}

.service-block__header {
  margin-bottom: 32px;
}

.service-block__solves {
  font-size: 0.8125rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 12px;
}

.service-block__list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
  margin: 24px 0;
}

.service-block__list li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

.service-block__list li::before {
  content: '\2713';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.service-block__proof {
  margin-top: 24px;
  padding: 20px 24px;
  background: var(--color-accent-subtle);
  border-left: 2px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

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

/* --- Values Section (About page) --- */
.value-block {
  padding: 24px 0;
}

.value-block__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text-primary);
}

.value-block__text {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* --- Responsive --- */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px 0;
  }

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

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 64px 0;
  }

  .nav__links {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 24px;
    gap: 24px;
  }

  .nav__links--open {
    display: flex;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__cta {
    display: none;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 120px;
    padding-bottom: 80px;
  }

  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .comparison-table {
    font-size: 0.8125rem;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 12px 10px;
  }

  .footer__inner {
    flex-direction: column;
  }

  .footer__nav {
    flex-direction: column;
    gap: 32px;
  }

  .footer__bottom {
    flex-direction: column;
    gap: 12px;
  }

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

  .process-step {
    grid-template-columns: 40px 1fr;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .stats {
    grid-template-columns: 1fr;
  }
}