/**
 * Linkedify Design System v1.0
 * A clean, minimal design system for marketing pages
 */

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Colors */
  --color-bg: #09090b;
  --color-bg-elevated: #18181b;
  --color-bg-subtle: #27272a;
  --color-border: #3f3f46;
  --color-border-subtle: #27272a;

  --color-text: #fafafa;
  --color-text-secondary: #a1a1aa;
  --color-text-muted: #71717a;

  --color-primary: #8b5cf6;
  --color-primary-light: #a78bfa;
  --color-primary-dark: #7c3aed;

  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

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

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Container */
  --container-max: 1120px;
  --container-narrow: 720px;
}

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

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

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

/* ============================================
   LAYOUT
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-24) 0;
}

.section--sm {
  padding: var(--space-16) 0;
}

.section--lg {
  padding: var(--space-24) 0 var(--space-20);
}

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

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.heading-xl {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.heading-lg {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
}

.heading-md {
  font-size: 1.5rem;
  font-weight: 600;
}

.heading-sm {
  font-size: 1.125rem;
  font-weight: 600;
}

.text-lg {
  font-size: 1.125rem;
  line-height: 1.7;
}

.text-base {
  font-size: 1rem;
  line-height: 1.6;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.5;
}

.text-xs {
  font-size: 0.75rem;
  line-height: 1.4;
}

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

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

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

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.nav__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
  padding: 0 var(--space-6);
  max-width: var(--container-max);
  margin: 0 auto;
}

.nav__logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
}

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

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

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

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

.btn--lg {
  padding: var(--space-4) var(--space-6);
  font-size: 1rem;
}

.btn--sm {
  padding: var(--space-2) var(--space-3);
  font-size: 0.75rem;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: calc(64px + var(--space-16)) 0 var(--space-16);
  text-align: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.hero__badge-vs {
  color: var(--color-primary);
  font-weight: 600;
}

.hero__title {
  max-width: 800px;
  margin: 0 auto var(--space-5);
}

.hero__subtitle {
  max-width: 640px;
  margin: 0 auto var(--space-8);
  color: var(--color-text-secondary);
}

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

.hero__trust {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-10);
  flex-wrap: wrap;
}

.hero__trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.hero__trust-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-success);
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--color-border);
}

.card--interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-subtle);
  border-radius: var(--radius-lg);
  font-size: 1.25rem;
  margin-bottom: var(--space-4);
}

.card__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

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

/* ============================================
   COMPARISON TABLE
   ============================================ */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-bg-elevated);
}

.table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.table th,
.table td {
  padding: var(--space-4) var(--space-5);
  text-align: left;
  border-bottom: 1px solid var(--color-border-subtle);
}

.table th {
  background: var(--color-bg-subtle);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table th:first-child {
  width: 40%;
}

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

.table__feature {
  font-weight: 500;
}

.table__detail {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.table__check {
  color: var(--color-success);
}

.table__cross {
  color: var(--color-danger);
}

.table__partial {
  color: var(--color-warning);
}

.table tr.highlight {
  background: rgba(139, 92, 246, 0.05);
}

/* ============================================
   PRICING
   ============================================ */
.pricing-card {
  text-align: center;
  padding: var(--space-8);
}

.pricing-card__price {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.pricing-card__price--strike {
  color: var(--color-text-muted);
  text-decoration: line-through;
  font-size: 1.5rem;
}

.pricing-card__period {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.savings-banner {
  background: linear-gradient(135deg, var(--color-success), #16a34a);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  text-align: center;
  color: white;
}

.savings-banner__amount {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.savings-banner__label {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-top: var(--space-2);
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-12);
}

.section-header__title {
  margin-bottom: var(--space-4);
}

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

/* ============================================
   GRID
   ============================================ */
.grid {
  display: grid;
  gap: var(--space-6);
}

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

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

.grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

@media (max-width: 768px) {
  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   FAQ
   ============================================ */
.faq-list {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

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

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  padding: var(--space-5) 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 500;
}

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

.faq-toggle {
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
  font-size: 0.875rem;
}

.faq-item.active .faq-toggle {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding-bottom: var(--space-5);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonial {
  padding: var(--space-6);
}

.testimonial__stars {
  color: #fbbf24;
  font-size: 1rem;
  margin-bottom: var(--space-4);
}

.testimonial__text {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: var(--space-5);
  font-style: italic;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial__avatar {
  width: 40px;
  height: 40px;
  background: var(--color-bg-subtle);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-primary);
}

.testimonial__name {
  font-weight: 500;
  font-size: 0.9375rem;
}

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

/* ============================================
   STEPS / MIGRATION
   ============================================ */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-8);
}

.step {
  text-align: center;
}

.step__number {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  margin: 0 auto var(--space-4);
}

.step__title {
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.step__text {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta {
  text-align: center;
  padding: var(--space-20) 0;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 100%);
}

.cta__title {
  margin-bottom: var(--space-4);
}

.cta__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--space-10) 0;
  border-top: 1px solid var(--color-border-subtle);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
}

.footer__link:hover {
  color: var(--color-text);
}

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

/* ============================================
   UTILITIES
   ============================================ */
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }

.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

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

.max-w-lg { max-width: 640px; }
.max-w-xl { max-width: 800px; }

/* ============================================
   WARNING BOX
   ============================================ */
.warning-box {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.warning-box__title {
  color: var(--color-warning);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.warning-box__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.warning-box__list {
  margin-left: var(--space-5);
  color: var(--color-text-secondary);
}

.warning-box__list li {
  margin-bottom: var(--space-2);
}

/* ============================================
   QUOTE CARDS
   ============================================ */
.quote-card {
  background: var(--color-bg-elevated);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  position: relative;
}

.quote-card::before {
  content: '"';
  position: absolute;
  top: var(--space-3);
  left: var(--space-5);
  font-size: 3.5rem;
  color: var(--color-warning);
  opacity: 0.25;
  font-family: Georgia, serif;
  line-height: 1;
}

.quote-card__text {
  font-style: italic;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  padding-left: var(--space-2);
  line-height: 1.7;
}

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

/* ============================================
   PROS & CONS
   ============================================ */
.pros-cons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

@media (max-width: 768px) {
  .pros-cons {
    grid-template-columns: 1fr;
  }
}

.pros-box,
.cons-box {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.pros-box {
  border: 1px solid rgba(34, 197, 94, 0.25);
}

.cons-box {
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.pros-box__title {
  color: var(--color-success);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-5);
}

.cons-box__title {
  color: var(--color-danger);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-5);
}

.pros-box__list,
.cons-box__list {
  list-style: none;
}

.pros-box__list li,
.cons-box__list li {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-text-secondary);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 0.9375rem;
}

.pros-box__list li:last-child,
.cons-box__list li:last-child {
  border-bottom: none;
}

.pros-box__list li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 600;
}

.cons-box__list li::before {
  content: '✗';
  color: var(--color-danger);
  font-weight: 600;
}

/* ============================================
   PROBLEM ITEMS
   ============================================ */
.problems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.problem-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.problem-item__icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: rgba(245, 158, 11, 0.15);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-warning);
  font-size: 1.125rem;
}

.problem-item__title {
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.problem-item__text {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ============================================
   PRICING COMPARISON
   ============================================ */
.pricing-table {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.pricing-table__header {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg-subtle);
  font-weight: 600;
  font-size: 0.875rem;
}

.pricing-table__row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
  align-items: center;
}

.pricing-table__row:last-child {
  border-bottom: none;
}

.pricing-table__plan {
  font-weight: 500;
}

.pricing-table__price {
  font-weight: 700;
  text-align: center;
}

.pricing-table__price--good {
  color: var(--color-success);
}

.pricing-table__price--bad {
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.pricing-table__price--danger {
  color: var(--color-danger);
}

.savings-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-success), #16a34a);
  color: white;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

@media (max-width: 768px) {
  .pricing-table__header,
  .pricing-table__row {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-2);
  }
}

/* ============================================
   FEATURE HIGHLIGHT BOX
   ============================================ */
.feature-box {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.08), rgba(139, 92, 246, 0.04));
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
}

.feature-box__title {
  font-size: 1.375rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: var(--space-8);
}

.feature-box__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
}

.feature-box__item {
  display: flex;
  gap: var(--space-4);
}

.feature-box__icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
}

.feature-box__item-title {
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.feature-box__item-text {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ============================================
   BREADCRUMB
   ============================================ */
.breadcrumb {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-4);
}

.breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .hero {
    padding: calc(64px + var(--space-10)) 0 var(--space-12);
  }

  .hero__trust {
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
  }

  .section {
    padding: var(--space-16) 0;
  }
}