/* ============================================
   TENJU SOLUTIONS — STYLES
   Minimal, dark, intellectual aesthetic
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES
   ============================================ */
:root {
  /* Colors */
  --bg: #0b0c0e;
  --text: #f4f4f2;
  --muted: #c7c7c5;
  --accent: #3b6f8f;
  --accent-hover: #4a8bb0;

  /* Typography */
  --font-serif: 'Libre Baskerville', Georgia, serif;
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-size-base: 19px;
  --line-height-base: 1.7;
  --essay-width: 68ch;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Transitions */
  --transition-fast: 100ms ease;
  --transition-smooth: 150ms ease;
  --transition-standard: 250ms ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: var(--line-height-base);
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Respect user motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 3rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  letter-spacing: -0.01em;
}

p {
  margin-bottom: var(--spacing-sm);
}

p:last-child {
  margin-bottom: 0;
}

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

a:hover,
a:focus {
  color: var(--accent-hover);
  text-decoration: underline;
}

a:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

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

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: sticky;
  top: 0;
  background: rgba(11, 12, 14, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(199, 199, 197, 0.1);
  padding: var(--spacing-sm) 0;
  z-index: 50;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color var(--transition-smooth);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--text);
  text-decoration: none;
}

.nav-separator {
  color: var(--muted);
  opacity: 0.5;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-md);
}

.hero-tagline {
  font-size: 1.25rem;
  font-style: italic;
  color: var(--muted);
  font-family: var(--font-serif);
}

/* ============================================
   ESSAY SECTION
   ============================================ */
.essay {
  background: rgba(244, 244, 242, 0.02);
}

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

.essay-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.essay-content {
  font-size: 1.05rem;
  line-height: 1.8;
}

.essay-content p {
  margin-bottom: 1.5rem;
  text-indent: 0;
}

.essay-content p + p {
  text-indent: 2em;
}

/* Pull Quote */
.pull-quote {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md) var(--spacing-lg);
  border-left: 4px solid var(--accent);
  background: rgba(59, 111, 143, 0.08);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.35rem;
  line-height: 1.6;
  color: var(--text);
}

.pull-quote p {
  margin-bottom: 0;
  text-indent: 0 !important;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
  text-align: center;
}

.section-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 400;
  color: var(--muted);
}

.about-text {
  max-width: 60ch;
  margin: 0 auto;
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
  text-align: center;
}

.contact-text {
  font-size: 1.1rem;
  color: var(--muted);
}

.contact-link {
  font-weight: 500;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-smooth), color var(--transition-smooth);
}

.contact-link:hover,
.contact-link:focus {
  border-bottom-color: var(--accent-hover);
  text-decoration: none;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--spacing-lg) 0 var(--spacing-md);
  border-top: 1px solid rgba(199, 199, 197, 0.1);
  text-align: center;
}

.footer-text {
  font-size: 0.85rem;
  color: var(--muted);
  opacity: 0.7;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablets */
@media (max-width: 768px) {
  :root {
    --font-size-base: 18px;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .hero {
    min-height: 75vh;
  }

  .essay-title {
    font-size: 2rem;
  }

  .essay-content {
    font-size: 1rem;
  }

  .pull-quote {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1.2rem;
  }

  .nav-container {
    gap: var(--spacing-xs);
  }
}

/* Mobile */
@media (max-width: 480px) {
  :root {
    --font-size-base: 17px;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 3rem;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .hero {
    min-height: 70vh;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 0.8rem;
  }

  .hero-tagline {
    font-size: 1.1rem;
  }

  .essay-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
  }

  .essay-content p + p {
    text-indent: 1.5em;
  }

  .pull-quote {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-sm);
    font-size: 1.1rem;
  }

  .nav-link {
    font-size: 0.8rem;
  }
}

/* ============================================
   LOGO STYLES - BOLD AND SIGNIFICANT
   ============================================ */
.hero-logo {
  margin-bottom: var(--spacing-xl);
  text-align: center;
  animation: logoEntrance 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.logo-image {
  max-width: 600px;
  width: 90%;
  height: auto;
  display: block;
  margin: 0 auto;
  /* Invert black logo to white for contrast on dark background */
  filter: invert(1) brightness(1.05) drop-shadow(0 4px 20px rgba(59, 111, 143, 0.4));
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.4s ease;
}

.hero-logo:hover .logo-image {
  transform: scale(1.02);
  filter: invert(1) brightness(1.05) drop-shadow(0 8px 30px rgba(59, 111, 143, 0.6));
}

/* Dramatic entrance animation */
@keyframes logoEntrance {
  0% {
    opacity: 0;
    transform: translateY(-30px) scale(0.9);
  }
  60% {
    opacity: 1;
    transform: translateY(5px) scale(1.01);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .hero-logo {
    animation: fadeIn 0.3s ease;
  }

  .logo-image {
    filter: none;
  }

  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }
}

/* ============================================
   TEAM SECTION
   ============================================ */
.team {
  background: rgba(244, 244, 242, 0.02);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
  padding-top: var(--spacing-md);
}

.team-member {
  text-align: center;
  padding: var(--spacing-md);
  border-radius: 4px;
  transition: transform var(--transition-smooth);
}

.team-member:hover {
  transform: translateY(-4px);
}

.team-member-portrait {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--spacing-sm);
  border-radius: 50%;
  background: rgba(59, 111, 143, 0.15);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-smooth), border-color var(--transition-smooth);
}

.team-member:hover .team-member-portrait {
  background: rgba(59, 111, 143, 0.25);
  border-color: var(--accent-hover);
}

.portrait-initial {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  transition: color var(--transition-smooth);
}

.team-member:hover .portrait-initial {
  color: var(--accent-hover);
}

.team-member-name {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
  color: var(--text);
}

.team-member-bio {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--muted);
  max-width: 35ch;
  margin: 0 auto;
}

/* ============================================
   CONTACT FORM
   ============================================ */
.contact-intro {
  text-align: center;
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: var(--spacing-lg);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text);
  background: rgba(244, 244, 242, 0.05);
  border: 1px solid rgba(199, 199, 197, 0.2);
  border-radius: 3px;
  transition: border-color var(--transition-smooth), background var(--transition-smooth);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(244, 244, 242, 0.08);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
  line-height: 1.6;
}

.form-submit {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bg);
  background: var(--accent);
  border: none;
  border-radius: 3px;
  cursor: pointer;
  transition: background var(--transition-smooth), transform var(--transition-fast);
}

.form-submit:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

.form-submit:active {
  transform: translateY(0);
}

.contact-fallback {
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(199, 199, 197, 0.1);
}

/* ============================================
   ACCESSIBILITY ENHANCEMENTS
   ============================================ */

/* High contrast focus states */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Selection styling */
::selection {
  background: var(--accent);
  color: var(--bg);
}

::-moz-selection {
  background: var(--accent);
  color: var(--bg);
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  body {
    background: white;
    color: black;
  }

  .nav,
  .footer {
    display: none;
  }

  .section {
    opacity: 1;
    transform: none;
    page-break-inside: avoid;
  }

  a {
    color: black;
    text-decoration: underline;
  }
}