/* style.css — BFG Component Styles */

/* ========================================
   SKIP LINK
   ======================================== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  z-index: 1000;
  text-decoration: none;
}
.skip-link:focus {
  top: var(--space-4);
}

/* ========================================
   SCROLL ANIMATIONS
   ======================================== */
.fade-in {
  opacity: 0;
  transition: opacity 0.7s ease;
}
.fade-in.is-visible {
  opacity: 1;
}
@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transition: none;
  }
}

/* ========================================
   DOT GRID PATTERN BACKGROUND
   ======================================== */
.dot-grid {
  position: relative;
}
.dot-grid::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: 0;
}
.dot-grid > * {
  position: relative;
  z-index: 1;
}

/* Line grid variant */
.line-grid {
  position: relative;
}
.line-grid::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}
.line-grid > * {
  position: relative;
  z-index: 1;
}

/* ========================================
   LAYOUT
   ======================================== */
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}
@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

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

.section {
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

.section + .section {
  border-top: 1px solid var(--color-divider);
}

/* ========================================
   HEADER / NAV
   ======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}
@media (min-width: 768px) {
  .header-inner {
    padding-inline: var(--space-8);
  }
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.logo svg {
  flex-shrink: 0;
}
.logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.2;
  white-space: nowrap;
}
@media (max-width: 479px) {
  .logo-text {
    font-size: 0.75rem;
    letter-spacing: 0.08em;
  }
}

/* Desktop nav */
.nav-desktop {
  display: none;
  align-items: center;
  gap: var(--space-8);
}
@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
  }
}
.nav-desktop a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: relative;
  padding-block: var(--space-1);
}
.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width var(--transition-interactive);
}
.nav-desktop a:hover,
.nav-desktop a[aria-current="page"] {
  color: var(--color-text);
}
.nav-desktop a:hover::after,
.nav-desktop a[aria-current="page"]::after {
  width: 100%;
}

/* Hamburger */
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text);
}
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
}

/* Mobile nav */
.nav-mobile {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #0D0D0D;
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-6) var(--space-4);
  z-index: 100;
}
.nav-mobile.is-open {
  display: block;
}
.nav-mobile a {
  display: block;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-base);
  font-weight: 500;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.nav-mobile a:last-child {
  border-bottom: none;
}
.nav-mobile a:hover,
.nav-mobile a[aria-current="page"] {
  color: var(--color-primary);
}

/* ========================================
   HERO
   ======================================== */
.hero {
  padding-top: clamp(var(--space-16), 10vw, var(--space-32));
  padding-bottom: clamp(var(--space-12), 8vw, var(--space-24));
  text-align: center;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

.hero .subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: 1.5;
}

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

/* ========================================
   PAGE HEADER (interior pages)
   ======================================== */
.page-header {
  padding-top: clamp(var(--space-12), 8vw, var(--space-24));
  padding-bottom: clamp(var(--space-8), 5vw, var(--space-16));
  text-align: center;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.page-header .subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 58ch;
  margin-inline: auto;
  line-height: 1.6;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  min-height: 44px;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
}
.btn-primary:active {
  background: var(--color-primary-active);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-outline:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}
.btn-outline:active {
  background: var(--color-surface-2);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  padding: var(--space-2) 0;
  letter-spacing: 0.04em;
}
.btn-ghost:hover {
  color: var(--color-primary-hover);
}

/* ========================================
   SECTION HEADINGS
   ======================================== */
.section-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

.section h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.section p {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}
.section p:last-child {
  margin-bottom: 0;
}

.section p strong,
.section p b {
  color: var(--color-text);
  font-weight: 600;
}

/* ========================================
   HOME — SERVICE CARDS (asymmetric 2+3)
   ======================================== */
.services-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto auto auto;
  }
  /* First two cards span full width of their column */
  .services-grid .service-card:nth-child(1) {
    grid-column: 1;
    grid-row: 1 / 3;
  }
  .services-grid .service-card:nth-child(2) {
    grid-column: 2;
    grid-row: 1 / 3;
  }
  /* Bottom three cards */
  .services-grid .service-card:nth-child(3),
  .services-grid .service-card:nth-child(4),
  .services-grid .service-card:nth-child(5) {
    grid-column: auto;
    grid-row: auto;
  }
}
@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: auto auto;
    gap: var(--space-5);
  }
  .services-grid .service-card:nth-child(1) {
    grid-column: 1 / 4;
    grid-row: 1;
  }
  .services-grid .service-card:nth-child(2) {
    grid-column: 4 / 7;
    grid-row: 1;
  }
  .services-grid .service-card:nth-child(3) {
    grid-column: 1 / 3;
    grid-row: 2;
  }
  .services-grid .service-card:nth-child(4) {
    grid-column: 3 / 5;
    grid-row: 2;
  }
  .services-grid .service-card:nth-child(5) {
    grid-column: 5 / 7;
    grid-row: 2;
  }
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-decoration: none;
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.service-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.service-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.65;
  flex: 1;
}

.service-card .card-arrow {
  margin-top: var(--space-6);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ========================================
   CREDIBILITY STRIP
   ======================================== */
.credibility-strip {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-8);
}

.cred-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  text-align: center;
}
@media (min-width: 640px) {
  .cred-list {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .cred-list {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
  }
}

.cred-item {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: var(--space-2) 0;
}
.cred-item strong {
  display: block;
  color: var(--color-text);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

/* ========================================
   SPEAKING CALLOUT
   ======================================== */
.callout {
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}
@media (min-width: 768px) {
  .callout {
    padding: var(--space-10) var(--space-12);
  }
}

.callout p {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}
.callout p:last-of-type {
  margin-bottom: var(--space-6);
}

/* ========================================
   SERVICES PAGE — PROMPT TABS
   ======================================== */
.prompt-tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.prompt-tab {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-interactive);
  min-height: 36px;
}
.prompt-tab:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}
.prompt-tab.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
}
.prompt-set {
  display: none;
}
.prompt-set.active {
  display: block;
}

/* ========================================
   SERVICES PAGE — TAK QUERIES
   ======================================== */
.query-block {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: var(--text-sm);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  line-height: 1.5;
  position: relative;
  padding-left: var(--space-10);
}
.query-block::before {
  content: '>';
  position: absolute;
  left: var(--space-4);
  color: var(--color-text-faint);
  font-weight: 700;
}

/* Prompt category labels */
.prompt-cat-label {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}
.prompt-cat-label:first-child {
  margin-top: 0;
}

/* Demo CTA in prompts area */
.prompt-demo-cta {
  margin-top: var(--space-8);
  text-align: center;
}

/* ========================================
   SERVICES PAGE — TWO-PATH CALLOUT
   ======================================== */
.path-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 768px) {
  .path-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.path-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.path-card h4 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.path-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.65;
}

/* ========================================
   SERVICES PAGE — TRAINING BLOCKS
   ======================================== */
.training-blocks {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 768px) {
  .training-blocks {
    grid-template-columns: repeat(3, 1fr);
  }
}
.training-block {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.training-block h4 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}
.training-block p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.65;
}

/* ========================================
   ABOUT — CREDENTIALS
   ======================================== */
.credentials-list {
  list-style: none;
  padding: 0;
}
.credentials-list li {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
  color: var(--color-text-muted);
  font-size: var(--text-base);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}
.credentials-list li:last-child {
  border-bottom: none;
}
.credentials-list .cred-icon {
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ========================================
   ABOUT — FOUNDER BIO
   ======================================== */
.bio-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.bio-header h3 {
  margin-bottom: 0;
}
.bio-header .bio-title {
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ========================================
   CONTACT — FORM
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}
@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
  }
}

.form-group {
  margin-bottom: var(--space-5);
}
.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  letter-spacing: 0.02em;
}
.form-group label .required {
  color: var(--color-primary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.5;
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-faint);
}
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-highlight);
}

.form-textarea {
  min-height: 140px;
  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='%238A8A85' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}
@media (min-width: 480px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* ========================================
   CONTACT — SIDEBAR
   ======================================== */
.contact-sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}
.contact-sidebar-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}
.contact-sidebar-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.65;
  margin-bottom: var(--space-4);
}
.contact-sidebar-card p:last-child {
  margin-bottom: 0;
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-8);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: center;
  text-align: center;
}
@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer-email a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
}
.footer-email a:hover {
  color: var(--color-primary);
}

/* ========================================
   CLOSING CTA
   ======================================== */
.closing-cta {
  text-align: center;
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}
.closing-cta p {
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  font-size: var(--text-base);
  line-height: 1.7;
}

/* ========================================
   NOTE/HIGHLIGHT BLOCK
   ======================================== */
.note-block {
  background: var(--color-primary-highlight);
  border: 1px solid rgba(154, 163, 73, 0.2);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  margin-block: var(--space-6);
}
.note-block p {
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: 1.65;
}

/* ========================================
   UTILITY
   ======================================== */
.text-accent {
  color: var(--color-primary);
}
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-10 { margin-top: var(--space-10); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-10 { margin-bottom: var(--space-10); }

/* Horizontal rule */
hr.divider {
  border: none;
  border-top: 1px solid var(--color-divider);
  margin-block: var(--space-8);
}

/* ========================================
   DECORATIVE CHEVRON PATTERN
   ======================================== */
.chevron-accent {
  display: inline-flex;
  gap: 2px;
  opacity: 0.3;
}
.chevron-accent svg {
  width: 12px;
  height: 12px;
}