/* ==========================================================================
   LEXKARA & CO — Production Stylesheet
   Design System: Concept 3 — Warm Minimalism with Crimson Accents
   ========================================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colors */
  --color-bg: #F9F7F4;
  --color-text: #1C1917;
  --color-accent: #8B1A1A;
  --color-muted: #78716C;
  --color-border: #E7E5E4;
  --color-border-light: #F0EEEB;
  --color-surface: #FFFFFF;
  --color-surface-alt: #F3F1EE;

  /* Dark mode colors */
  --color-bg-dark: #141211;
  --color-text-dark: #E7E5E4;
  --color-accent-dark: #C4504F;
  --color-muted-dark: #A8A29E;
  --color-border-dark: #292524;
  --color-border-light-dark: #1C1A19;
  --color-surface-dark: #1C1917;
  --color-surface-alt-dark: #1A1918;

  /* Typography */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'General Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Type Scale — fluid */
  --text-xs: clamp(0.75rem, 0.7rem + 0.15vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.76rem + 0.2vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.88rem + 0.2vw, 1rem);
  --text-lg: clamp(1.125rem, 1rem + 0.4vw, 1.25rem);
  --text-xl: clamp(1.5rem, 1.2rem + 0.8vw, 2rem);
  --text-2xl: clamp(2rem, 1.5rem + 1.5vw, 3rem);
  --text-hero: clamp(2.5rem, 1.8rem + 2.5vw, 4.5rem);

  /* 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-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --max-width-prose: 65ch;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 200ms;
  --duration-normal: 400ms;
  --duration-slow: 600ms;
}

/* ---------- Dark Mode Variables ---------- */
[data-theme="dark"] {
  --color-bg: var(--color-bg-dark);
  --color-text: var(--color-text-dark);
  --color-accent: var(--color-accent-dark);
  --color-muted: var(--color-muted-dark);
  --color-border: var(--color-border-dark);
  --color-border-light: var(--color-border-light-dark);
  --color-surface: var(--color-surface-dark);
  --color-surface-alt: var(--color-surface-alt-dark);
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--duration-normal) var(--ease-out),
              color var(--duration-normal) var(--ease-out);
}

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent);
  color: #fff;
  font-size: var(--text-sm);
  z-index: 1000;
  border-radius: 0 0 4px 4px;
}

.skip-link:focus {
  top: 0;
}

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-fast) var(--ease-out),
              background-color var(--duration-normal) var(--ease-out);
}

.nav--scrolled {
  border-bottom-color: var(--color-accent);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
}

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

.nav__logo img {
  height: 70px;
  width: auto;
  mix-blend-mode: multiply;
}

[data-theme="dark"] .nav__logo img {
  filter: invert(1);
  mix-blend-mode: normal;
}

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

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  position: relative;
  padding: var(--space-1) 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--duration-fast) var(--ease-out);
}

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

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

.nav__cta {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.02em;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.nav__cta:hover {
  opacity: 0.7;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

/* Dark mode toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  transition: background-color var(--duration-fast) var(--ease-out);
}

.theme-toggle:hover {
  background-color: var(--color-surface-alt);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  height: 24px;
  justify-content: center;
  cursor: pointer;
}

.nav__hamburger span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: var(--color-text);
  transition: all var(--duration-fast) var(--ease-out);
}

.nav__hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

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

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

/* Mobile menu */
.nav__mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 99;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.nav__mobile-menu.active {
  opacity: 1;
  pointer-events: all;
}

.nav__mobile-menu a {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-2xl);
  transition: color var(--duration-fast) var(--ease-out);
}

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

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

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

/* ---------- Sections ---------- */
.section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) 0;
}

.section--hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: clamp(var(--space-20), 12vw, var(--space-32)) 0;
}

.section--page-hero {
  padding: clamp(var(--space-16), 10vw, var(--space-24)) 0;
}

/* ---------- Crimson Rule ---------- */
.crimson-rule {
  width: 100%;
  height: 1px;
  background-color: var(--color-accent);
  border: none;
  margin: var(--space-8) 0;
}

.crimson-rule--short {
  width: 60px;
}

.crimson-rule--section {
  margin: 0 0 var(--space-12) 0;
}

/* ---------- Typography ---------- */
.display {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  line-height: 1.1;
}

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

.display--page {
  font-size: var(--text-2xl);
}

.display--section {
  font-size: var(--text-xl);
}

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

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

.label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-muted);
}

/* ---------- Hero ---------- */
.hero__content {
  max-width: 800px;
}

.hero__tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-muted);
  margin-top: var(--space-4);
}

.hero__body {
  font-size: var(--text-base);
  color: var(--color-muted);
  max-width: 600px;
  margin-top: var(--space-8);
  line-height: 1.7;
}

.hero__scroll-cue {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--space-12);
  color: var(--color-accent);
  font-size: var(--text-xl);
  animation: scroll-cue 2s ease-in-out infinite;
}

@keyframes scroll-cue {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ---------- Statement ---------- */
.statement {
  text-align: center;
  padding: clamp(var(--space-16), 8vw, var(--space-24)) 0;
}

.statement__quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.35;
}

.statement__attribution {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-top: var(--space-6);
  letter-spacing: 0.05em;
}

/* ---------- Practice Areas List ---------- */
.practice-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.practice-item {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: baseline;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--duration-fast) var(--ease-out);
  text-decoration: none;
}

.practice-item:hover {
  background-color: var(--color-surface-alt);
}

.practice-item__number {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--color-border);
  line-height: 1;
}

.practice-item__content {
  min-width: 0;
}

.practice-item__title {
  font-weight: 600;
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}

.practice-item__desc {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.5;
}

.practice-item__arrow {
  font-size: var(--text-lg);
  color: var(--color-accent);
  transition: transform var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.practice-item:hover .practice-item__arrow {
  transform: translateX(4px);
}

/* ---------- Practice Page Full Sections ---------- */
.practice-section {
  padding: clamp(var(--space-12), 6vw, var(--space-20)) 0;
}

.practice-section__number {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(3rem, 2rem + 3vw, 5rem);
  color: var(--color-border);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.practice-section__heading {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  margin-bottom: var(--space-6);
}

.practice-section__body {
  max-width: var(--max-width-prose);
  line-height: 1.75;
}

.practice-section__body p + p {
  margin-top: var(--space-4);
}

.practice-section__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-8);
  font-weight: 500;
  font-size: var(--text-sm);
  color: var(--color-accent);
  transition: gap var(--duration-fast) var(--ease-out);
}

.practice-section__cta:hover {
  gap: var(--space-3);
}

/* ---------- Principal / Bio ---------- */
.principal {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.credentials-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.credentials-list li::before {
  content: '·';
  margin-right: var(--space-2);
  color: var(--color-accent);
  font-weight: 700;
}

.bio-text {
  max-width: var(--max-width-prose);
  line-height: 1.75;
}

.bio-text p + p {
  margin-top: var(--space-4);
}

/* ---------- Insights Cards ---------- */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.insight-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-border);
  transition: border-color var(--duration-fast) var(--ease-out);
}

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

.insight-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.insight-card__date {
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.insight-card__tag {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.insight-card__title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  line-height: 1.3;
  margin-bottom: var(--space-3);
}

.insight-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  flex-grow: 1;
}

.insight-card__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: gap var(--duration-fast) var(--ease-out);
}

.insight-card__link:hover {
  gap: var(--space-3);
}

/* ---------- Contact Section ---------- */
.contact-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.contact-heading {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--text-sm);
}

.contact-info a {
  transition: color var(--duration-fast) var(--ease-out);
}

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

.contact-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 500;
  color: var(--color-accent);
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  transition: gap var(--duration-fast) var(--ease-out);
}

.contact-cta:hover {
  gap: var(--space-3);
}

/* ---------- Contact Page Layout ---------- */
.contact-page-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

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

.form-group label {
  font-size: var(--text-sm);
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: 2px;
  font-size: var(--text-base);
  transition: border-color var(--duration-fast) var(--ease-out);
  color: var(--color-text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2378716C' 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 12px center;
  background-size: 16px;
  padding-right: var(--space-8);
}

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

.form-checkbox input[type="checkbox"] {
  margin-top: 4px;
  accent-color: var(--color-accent);
  width: 16px;
  height: 16px;
}

.form-checkbox label {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.5;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-8);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.03em;
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

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

.btn--primary:hover {
  opacity: 0.9;
}

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

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

/* ---------- Approach Cards ---------- */
.approach-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.approach-card {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-accent);
}

.approach-card__number {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-2xl);
  color: var(--color-border);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.approach-card__title {
  font-weight: 600;
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
}

.approach-card__body {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.6;
}

/* ---------- Footer ---------- */
.footer {
  padding: var(--space-12) 0 var(--space-8);
  border-top: 1px solid var(--color-border);
}

.footer__disclaimer {
  font-size: var(--text-xs);
  color: var(--color-muted);
  line-height: 1.7;
  max-width: var(--max-width-prose);
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.footer__info {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: baseline;
}

.footer__info span::after {
  content: ' · ';
}

.footer__info span:last-child::after {
  content: '';
}

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

.footer__links a {
  transition: color var(--duration-fast) var(--ease-out);
}

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

/* ---------- Legal Pages ---------- */
.legal-content {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
}

.legal-content h2 {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
}

.legal-content h3 {
  font-weight: 600;
  font-size: var(--text-lg);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

.legal-content p {
  margin-bottom: var(--space-4);
  line-height: 1.75;
  color: var(--color-muted);
}

.legal-content p strong {
  color: var(--color-text);
}

.legal-content ul,
.legal-content ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

.legal-content ul {
  list-style: disc;
}

.legal-content ol {
  list-style: decimal;
}

.legal-content li {
  margin-bottom: var(--space-2);
  line-height: 1.7;
  color: var(--color-muted);
}

.legal-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-content a:hover {
  opacity: 0.8;
}

/* ---------- Map Link ---------- */
.map-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-accent);
  margin-top: var(--space-4);
  transition: opacity var(--duration-fast) var(--ease-out);
}

.map-link:hover {
  opacity: 0.7;
}

/* ---------- Scroll Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__scroll-cue {
    animation: none;
  }

  html {
    scroll-behavior: auto;
  }
}

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

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

  .practice-item {
    grid-template-columns: 60px 1fr auto;
  }
}

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

  .nav__hamburger {
    display: flex;
  }

  .nav__mobile-menu {
    display: flex;
  }

  .nav__actions .nav__cta {
    display: none;
  }

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

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

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .practice-item {
    grid-template-columns: 50px 1fr auto;
    gap: var(--space-2);
  }

  .practice-section__number {
    font-size: clamp(2.5rem, 2rem + 2vw, 4rem);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-3);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }

  .nav__inner {
    padding: var(--space-3) var(--space-4);
  }

  .practice-item {
    grid-template-columns: 1fr;
  }

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