/* ============================================
   LexWeave Design System
   Premium Legal Intelligence Platform
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Primary palette */
  --navy-950: #0a0e1a;
  --navy-900: #0f1629;
  --navy-800: #162040;
  --navy-700: #1e2d5a;
  --navy-600: #2a3f7a;

  /* Accent — electric blue / teal */
  --accent-500: #3b82f6;
  --accent-400: #60a5fa;
  --accent-300: #93c5fd;
  --accent-glow: rgba(59, 130, 246, 0.25);

  /* Secondary accent — warm gold for CTAs */
  --gold-500: #f59e0b;
  --gold-400: #fbbf24;
  --gold-300: #fcd34d;

  /* Neutrals */
  --white: #ffffff;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;

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

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

  /* Spacing scale */
  --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;
  --space-32: 8rem;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 40px var(--accent-glow);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --header-height: 72px;
}

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

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

body {
  font-family: var(--font-body);
  background: var(--navy-950);
  color: var(--gray-200);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a {
  color: var(--accent-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-300);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--white);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.875rem, 3.5vw, 2.75rem);
}

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

h4 {
  font-size: 1.125rem;
}

p {
  color: var(--gray-300);
  max-width: 65ch;
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent-400), var(--accent-300), var(--gold-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-lg { font-size: 1.125rem; }

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

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

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

.section--lg {
  padding: var(--space-32) 0;
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition-base);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.header__logo {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header__logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-500), var(--accent-400));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  color: white;
}

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

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-400);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-500);
  transition: width var(--transition-base);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

/* Mobile menu */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-2);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent-500), #2563eb);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.4);
  color: var(--white);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--white);
}

.btn--gold {
  background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
  color: var(--navy-950);
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
}

.btn--gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
  color: var(--navy-950);
}

.btn--lg {
  padding: 1rem 2.25rem;
  font-size: 1rem;
}

.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
}

/* --- Cards --- */
.card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--transition-base);
}

.card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: var(--space-5);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(59, 130, 246, 0.05));
  color: var(--accent-400);
}

.card__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-3);
}

.card__text {
  font-size: 0.9375rem;
  color: var(--gray-400);
  line-height: 1.6;
}

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

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

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + var(--space-16));
  padding-bottom: var(--space-16);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero__bg::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 80%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__bg::after {
  content: '';
  position: absolute;
  bottom: -30%;
  right: -20%;
  width: 60%;
  height: 60%;
  background: radial-gradient(ellipse, rgba(245, 158, 11, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  max-width: 720px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.375rem 1rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-400);
  margin-bottom: var(--space-8);
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-400);
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero__title {
  margin-bottom: var(--space-6);
}

.hero__subtitle {
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  color: var(--gray-400);
  margin-bottom: var(--space-10);
  max-width: 580px;
  line-height: 1.7;
}

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

.hero__stats {
  display: flex;
  gap: var(--space-12);
  margin-top: var(--space-16);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.hero__stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.hero__stat-label {
  font-size: 0.8125rem;
  color: var(--gray-500);
  margin-top: var(--space-1);
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-16);
}

.section-header__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-400);
  margin-bottom: var(--space-4);
}

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

.section-header__text {
  font-size: 1.0625rem;
  color: var(--gray-400);
  margin: 0 auto;
}

/* --- Feature Sections --- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.feature-row--reverse {
  direction: rtl;
}

.feature-row--reverse > * {
  direction: ltr;
}

.feature-visual {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(59, 130, 246, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
  position: relative;
  overflow: hidden;
}

.feature-visual__placeholder {
  color: var(--gray-600);
  font-size: 0.875rem;
  text-align: center;
}

/* --- CTA Section --- */
.cta-section {
  position: relative;
  text-align: center;
  padding: var(--space-24) 0;
}

.cta-section__inner {
  background: linear-gradient(135deg, var(--navy-800), var(--navy-700));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-16) var(--space-8);
  position: relative;
  overflow: hidden;
}

.cta-section__inner::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1), transparent 70%);
  pointer-events: none;
}

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

.cta-section__text {
  font-size: 1.0625rem;
  color: var(--gray-400);
  margin: 0 auto var(--space-8);
  max-width: 500px;
}

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

/* --- Footer --- */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer__brand-text {
  font-size: 0.875rem;
  color: var(--gray-500);
  max-width: 300px;
  line-height: 1.7;
  margin-top: var(--space-4);
}

.footer__heading {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  margin-bottom: var(--space-5);
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  font-size: 0.875rem;
  color: var(--gray-500);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.8125rem;
  color: var(--gray-600);
}

/* --- Blog Cards --- */
.blog-card {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.blog-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.blog-card__image {
  height: 200px;
  background: linear-gradient(135deg, var(--navy-800), var(--navy-700));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  font-size: 0.875rem;
}

.blog-card__body {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card__category {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-400);
  margin-bottom: var(--space-3);
}

.blog-card__title {
  font-size: 1.0625rem;
  margin-bottom: var(--space-3);
}

.blog-card__excerpt {
  font-size: 0.875rem;
  color: var(--gray-500);
  line-height: 1.6;
  flex: 1;
}

.blog-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.75rem;
  color: var(--gray-600);
}

/* --- Lead Magnet / Email Capture --- */
.lead-magnet {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(59, 130, 246, 0.02));
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  text-align: center;
}

.lead-magnet__title {
  font-size: 1.375rem;
  margin-bottom: var(--space-3);
}

.lead-magnet__text {
  color: var(--gray-400);
  margin: 0 auto var(--space-6);
  max-width: 450px;
  font-size: 0.9375rem;
}

.lead-magnet__form {
  display: flex;
  gap: var(--space-3);
  max-width: 420px;
  margin: 0 auto;
}

.lead-magnet__input {
  flex: 1;
  padding: 0.75rem 1.25rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.lead-magnet__input::placeholder {
  color: var(--gray-600);
}

.lead-magnet__input:focus {
  border-color: var(--accent-500);
}

/* --- Form Elements --- */
input, textarea, select {
  font-family: var(--font-body);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-300);
  margin-bottom: var(--space-2);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--white);
  font-size: 0.9375rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  border-color: var(--accent-500);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

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

/* --- Tag / Pill --- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-400);
}

/* --- Divider --- */
.divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.06);
  margin: var(--space-16) 0;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: 1fr; gap: var(--space-10); }
  .feature-row--reverse { direction: ltr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .nav--open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--navy-950);
    padding: var(--space-8);
    gap: var(--space-6);
    z-index: 999;
  }
  .nav__toggle { display: block; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .hero__stats { flex-direction: column; gap: var(--space-6); }
  .footer__grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: calc(var(--header-height) + var(--space-10)); }
  .section { padding: var(--space-16) 0; }
  .lead-magnet__form { flex-direction: column; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
  .cta-section__actions { flex-direction: column; align-items: center; }
}

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

/* --- Animations --- */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-up {
  animation: fade-up 0.6s ease forwards;
  opacity: 0;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* --- Blog Callout Boxes --- */
.lw-callout {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(59, 130, 246, 0.03));
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  padding: var(--space-6);
  margin: var(--space-8) 0;
}

.lw-callout--gold {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), rgba(245, 158, 11, 0.03));
  border-color: rgba(245, 158, 11, 0.2);
}

.lw-callout__title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-400, #60a5fa);
  margin-bottom: var(--space-3);
}

.lw-callout--gold .lw-callout__title {
  color: var(--gold-500, #f59e0b);
}

.lw-callout p {
  color: var(--gray-300, #cbd5e1);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin: 0;
}

.lw-callout p + p {
  margin-top: var(--space-3);
}

/* --- Blog Article CTA --- */
.article-cta {
  background: linear-gradient(135deg, var(--navy-800, #1e293b), var(--navy-900, #0f172a));
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: 16px;
  padding: var(--space-10) var(--space-8);
  text-align: center;
  margin: var(--space-12) 0 var(--space-8);
}

.article-cta h2 {
  font-size: 1.5rem !important;
  margin: 0 0 var(--space-4) !important;
  color: var(--white, #fff);
}

.article-cta p {
  color: var(--gray-400, #94a3b8);
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 540px;
  margin: 0 auto var(--space-6);
}

.article-cta .btn {
  display: inline-flex;
}