/* ============================================
   Orphil LLC — Design System
   Executive aesthetic. Light-first. AI-ready.
   ============================================ */

/* --- CSS Variables --- */
:root {
  /* Light theme (default) — cyan accent, matching myaiforone.com */
  --bg-primary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-elevated: #f1f5f9;
  --bg-subtle: rgba(0, 0, 0, 0.03);
  --bg-hover: rgba(0, 0, 0, 0.06);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;
  --text-muted: #cbd5e1;

  --accent-primary: #22d3ee;
  --accent-light: #67e8f9;
  --accent-dark: #06b6d4;
  --accent-subtle: rgba(34, 211, 238, 0.08);
  --accent-glow: rgba(34, 211, 238, 0.25);

  --border-default: rgba(34, 211, 238, 0.3);
  --border-subtle: rgba(34, 211, 238, 0.1);
  --border-strong: rgba(34, 211, 238, 0.5);
  --border-accent: rgba(34, 211, 238, 0.4);

  --nav-bg: rgba(248, 250, 252, 0.92);
  --nav-blur: 16px;
  --overlay-bg: rgba(0, 0, 0, 0.4);
  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

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

  --max-width: 1200px;
  --nav-height: 72px;
}

[data-theme="dark"] {
  --bg-primary: #060a13;
  --bg-surface: #111827;
  --bg-elevated: #1e293b;
  --bg-subtle: rgba(255, 255, 255, 0.04);
  --bg-hover: rgba(255, 255, 255, 0.08);

  --text-primary: #f1f5f9;
  --text-secondary: rgba(241, 245, 249, 0.65);
  --text-tertiary: #94a3b8;
  --text-muted: rgba(241, 245, 249, 0.25);

  --accent-primary: #22d3ee;
  --accent-light: #67e8f9;
  --accent-dark: #06b6d4;
  --accent-subtle: rgba(34, 211, 238, 0.12);
  --accent-glow: rgba(34, 211, 238, 0.3);

  --border-default: rgba(34, 211, 238, 0.15);
  --border-subtle: rgba(34, 211, 238, 0.06);
  --border-strong: rgba(34, 211, 238, 0.3);
  --border-accent: rgba(34, 211, 238, 0.3);

  --nav-bg: rgba(6, 10, 19, 0.92);
  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
}

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

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

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

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

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.15rem; }

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

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

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(var(--nav-blur));
  -webkit-backdrop-filter: blur(var(--nav-blur));
  border-bottom: 1px solid var(--border-subtle);
  height: var(--nav-height);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--text-primary);
}

.nav-brand .brand-logo {
  height: 40px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-primary);
  border-radius: 1px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--accent-primary);
  color: #060a13;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.nav-cta:hover {
  background: var(--accent-light);
  color: #060a13;
  transform: translateY(-1px);
}

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-default);
  padding: 16px 24px;
  z-index: 99;
}

.nav-mobile.open {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-mobile a {
  display: block;
  padding: 12px 16px;
  color: var(--text-secondary);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-mobile a:hover,
.nav-mobile a.active {
  background: var(--bg-hover);
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-cta-desktop { display: none; }
  .nav-toggle { display: block; }
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.page-content {
  padding-top: var(--nav-height);
}

section {
  padding: 80px 0;
}

section + section {
  border-top: 1px solid var(--border-subtle);
}

.section-header {
  margin-bottom: 48px;
}

.section-header .overline {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-primary);
  margin-bottom: 12px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1.1rem;
}

/* --- Hero --- */
.hero {
  padding: 140px 0 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, var(--accent-subtle) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero .overline {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-primary);
  margin-bottom: 20px;
  padding: 6px 16px;
  background: var(--accent-subtle);
  border: 1px solid var(--border-accent);
  border-radius: 100px;
}

.hero h1 {
  margin-bottom: 24px;
}

.hero h1 .accent {
  color: var(--accent-primary);
}

.hero p.lead {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  font-family: var(--font-body);
}

.btn-primary {
  background: var(--accent-primary);
  color: #060a13;
}

.btn-primary:hover {
  background: var(--accent-light);
  color: #060a13;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-secondary {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

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

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

.card .card-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-subtle);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.card h3 {
  margin-bottom: 12px;
}

.card p {
  font-size: 0.95rem;
  line-height: 1.7;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .card-grid-3 { grid-template-columns: 1fr; }
}

/* --- Testimonials --- */
.testimonials {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-default) transparent;
}

.testimonial {
  flex: 0 0 320px;
  scroll-snap-align: start;
  padding: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.testimonial p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-style: italic;
}

.testimonial cite {
  font-style: normal;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  display: block;
}

.testimonial cite span {
  display: block;
  font-weight: 400;
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-top: 2px;
}

@media (max-width: 768px) {
  .testimonial { flex: 0 0 280px; }
}

/* --- Service Detail Cards --- */
.service-block {
  margin-bottom: 64px;
}

.service-block:last-child {
  margin-bottom: 0;
}

.service-block h3 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.service-block .service-tagline {
  font-style: italic;
  color: var(--text-tertiary);
  margin-bottom: 24px;
  font-size: 1rem;
}

.service-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 16px;
}

.service-item h4 {
  color: var(--accent-primary);
  margin-bottom: 12px;
}

.service-item ul {
  list-style: none;
  padding: 0;
}

.service-item ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.service-item ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
}

.service-item .outcome {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
}

/* --- Delivery Model Table --- */
.delivery-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
}

.delivery-table th,
.delivery-table td {
  text-align: left;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-default);
}

.delivery-table th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  font-weight: 600;
}

.delivery-table td {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.delivery-table td strong {
  color: var(--text-primary);
}

/* --- Belief / Quote Block --- */
.belief-block {
  background: var(--bg-surface);
  border-left: 3px solid var(--accent-primary);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 40px;
  margin: 48px 0;
}

.belief-block blockquote {
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.5;
  font-style: italic;
}

.belief-block cite {
  display: block;
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--text-tertiary);
  font-style: normal;
}

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

.stat {
  text-align: center;
}

.stat .stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.stat .stat-label {
  font-size: 0.9rem;
  color: var(--text-tertiary);
}

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border-default);
  padding: 48px 0 32px;
  margin-top: 40px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand p {
  font-size: 0.9rem;
  margin-top: 12px;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-col ul a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 32px auto 0;
  padding: 20px 24px 0;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

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

/* --- About Page --- */
.about-hero {
  padding: 120px 0 60px;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

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

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

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

.contact-info h3 {
  margin-bottom: 16px;
}

.contact-info p {
  margin-bottom: 24px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: border-color var(--transition-fast);
}

.contact-method:hover {
  border-color: var(--border-accent);
}

.contact-method .method-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-subtle);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-method .method-label {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-bottom: 2px;
}

.contact-method .method-value {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
}

/* --- Contact Form --- */
.contact-form .form-group {
  margin-bottom: 16px;
}

.contact-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
  box-sizing: border-box;
}

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

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--text-tertiary);
}

.contact-form textarea {
  resize: vertical;
  min-height: 100px;
}

.form-success {
  padding: 24px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-primary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-align: center;
  font-weight: 500;
}

/* --- 404 Page --- */
.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  padding: 80px 24px;
}

.error-page h1 {
  font-size: 6rem;
  color: var(--accent-primary);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}

.error-page h2 {
  margin-bottom: 16px;
}

.error-page p {
  margin: 0 auto 32px;
}

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

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive spacing */
@media (max-width: 768px) {
  section { padding: 60px 0; }
  .hero { padding: 100px 0 60px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .belief-block { padding: 24px; }
  .belief-block blockquote { font-size: 1.1rem; }
}