/* 
  Proxemic - Elegant Spacious Research Portal
  Theme: Serious, a little bit fun, quietly awesome, personable.
*/

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,500;0,600;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Colors - Light Theme (Warm Paper & Rich Indigo Charcoal Ink) */
  --bg-primary: #FAF9F6;
  --bg-secondary: #f3f0e8;
  --text-primary: #121c2c;
  --text-muted: rgba(18, 28, 44, 0.65);
  --text-dim: rgba(18, 28, 44, 0.38);
  
  /* Humane, Warm Accent - Clay/Terracotta */
  --accent-color: #d97855; 
  --accent-glow: rgba(217, 120, 85, 0.08);
  
  --border-color: rgba(18, 28, 44, 0.08);
  --border-strong: rgba(18, 28, 44, 0.16);
  
  --grid-major: rgba(18, 28, 44, 0.02);
  --grid-minor: rgba(18, 28, 44, 0.006);
  
  /* Layout */
  --max-width: 1040px;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  /* Colors - Dark Theme (Minimal Midnight Ink & Warm Slate Silver) */
  --bg-primary: #0a0d12;
  --bg-secondary: #131720;
  --text-primary: #e6ebf5;
  --text-muted: rgba(230, 235, 245, 0.7);
  --text-dim: rgba(230, 235, 245, 0.38);
  
  /* Dark Accent - Luminous Amber Copper */
  --accent-color: #f28b50;
  --accent-glow: rgba(242, 139, 80, 0.12);
  
  --border-color: rgba(230, 235, 245, 0.08);
  --border-strong: rgba(230, 235, 245, 0.16);
  
  --grid-major: rgba(230, 235, 245, 0.015);
  --grid-minor: rgba(230, 235, 245, 0.005);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
  background-color: var(--bg-primary);
  transition: background-color 0.8s cubic-bezier(0.16, 1, 0.3, 1), color 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- WHISPER GRID & CANVAS --- */
.grid-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 1;
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  background-image: 
    linear-gradient(to right, var(--grid-major) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-major) 1px, transparent 1px),
    linear-gradient(to right, var(--grid-minor) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-minor) 1px, transparent 1px);
  background-position: center center;
  transition: opacity 0.5s ease;
}

#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: auto;
}

/* --- STRUCTURE --- */
.content-wrapper {
  position: relative;
  z-index: 2;
  width: 100%;
  pointer-events: none;
}

header, section, footer, button, a, input, textarea, form {
  pointer-events: auto;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 3rem;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }
}

/* --- NAV --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background-color: rgba(250, 249, 246, 0.4);
  transition: var(--transition-smooth);
}

[data-theme="dark"] header {
  background-color: rgba(10, 13, 18, 0.4);
}

header .nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.4px;
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

.logo-circle {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--accent-color);
  box-shadow: 0 0 10px var(--accent-color);
  transition: var(--transition-smooth);
}

.logo:hover .logo-circle {
  transform: scale(1.4);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

.theme-toggle-btn {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition-fast);
  padding: 0.5rem;
}

.theme-toggle-btn:hover {
  color: var(--text-primary);
}

.theme-toggle-btn svg {
  width: 1.05rem;
  height: 1.05rem;
  stroke: currentColor;
  stroke-width: 1.5px;
  fill: none;
}

/* --- HERO --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 5rem;
  position: relative;
}

.hero-content {
  max-width: 760px;
}

.status-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-dim);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--accent-color);
  box-shadow: 0 0 6px var(--accent-color);
  animation: pulse-badge 2s infinite alternate;
}

@keyframes pulse-badge {
  0% { opacity: 0.3; }
  100% { opacity: 1; }
}

h1.hero-title {
  font-size: 3.25rem;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -1.2px;
  color: var(--text-primary);
  margin-bottom: 2rem;
  min-height: 7.8rem; /* Reserves space for 2 lines on desktop */
}

@media (max-width: 768px) {
  h1.hero-title {
    font-size: 2.25rem;
    letter-spacing: -0.6px;
    min-height: 8.2rem; /* Reserves space for 3 lines on mobile */
  }
}

.hero-description {
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 660px;
  margin-bottom: 3.5rem;
}

.btn-minimal {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  padding: 0.75rem 1.5rem;
  background-color: transparent;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-minimal:hover {
  border-color: var(--text-primary);
  background-color: var(--accent-glow);
}

.btn-minimal svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 2px;
  fill: none;
  transition: transform 0.3s ease;
}

.btn-minimal:hover svg {
  transform: translateX(4px);
}

/* --- EDITORIAL SECTIONS --- */
.section {
  padding: 10rem 0;
  border-top: 1px solid var(--border-color);
}

.section-grid {
  display: grid;
  grid-template-columns: 0.35fr 1fr;
  gap: 5rem;
}

@media (max-width: 768px) {
  .section-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-dim);
  letter-spacing: 1.5px;
}

.section-main {
  max-width: 680px;
}

.philosophy-text {
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1.75;
  color: var(--text-primary);
  margin-bottom: 2.5rem;
}

@media (max-width: 768px) {
  .philosophy-text {
    font-size: 1.15rem;
  }
}

/* --- SERIOUS BUT FUN BLOCKS --- */
.rlhb-explanation-box {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2.5rem;
  background-color: var(--bg-secondary);
  transition: var(--transition-smooth);
  margin: 2.5rem 0;
}

.rlhb-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.rlhb-title span {
  color: var(--accent-color);
}

.rlhb-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
}

.supporting-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* --- PERSONABLE BIOS --- */
.bios-list {
  display: flex;
  flex-direction: column;
  gap: 4rem;
  margin-top: 1rem;
}

.bio-entry {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  border-left: 2px solid var(--accent-color);
  padding-left: 2rem;
}

.bio-header {
  display: flex;
  flex-direction: column;
}

.bio-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.bio-role {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.bio-description {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* --- CONTACT INQUIRY --- */
.inquiry-box {
  margin-top: 2rem;
}

.inquiry-form {
  display: flex;
  border-bottom: 2px solid var(--border-strong);
  padding-bottom: 0.5rem;
  max-width: 480px;
  transition: var(--transition-fast);
}

.inquiry-form:focus-within {
  border-color: var(--accent-color);
}

.inquiry-input {
  flex-grow: 1;
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text-primary);
  outline: none;
  padding: 0.5rem 0;
}

.inquiry-input::placeholder {
  color: var(--text-dim);
}

.inquiry-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  transition: var(--transition-fast);
}

.inquiry-btn:hover {
  color: var(--accent-color);
}

.inquiry-success {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--accent-color);
  padding: 0.5rem 0;
  margin: 0;
  opacity: 0;
  transform: translateY(6px);
  transition: var(--transition-smooth);
}

.inquiry-success.show {
  opacity: 1;
  transform: translateY(0);
}

.inquiry-error {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: #d9534f;
  margin-top: 0.75rem;
  opacity: 0;
  transform: translateY(4px);
  transition: var(--transition-fast);
}

.inquiry-error.show {
  opacity: 1;
  transform: translateY(0);
}


/* --- FOOTER --- */
footer {
  border-top: 1px solid var(--border-color);
  padding: 8rem 0 4rem 0;
  background-color: var(--bg-primary);
}

.footer-layout {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

@media (max-width: 576px) {
  .footer-layout {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
}

.footer-credit {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-credit a {
  color: var(--text-muted);
  text-decoration: none;
}

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

/* --- MOBILE NAVIGATION RESTYLING --- */
@media (max-width: 768px) {
  header .nav-container {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: auto;
    padding: 1.25rem 0.5rem;
    gap: 0.75rem;
  }

  .logo {
    width: 100%;
    justify-content: center;
  }

  .nav-links {
    width: 100%;
    justify-content: center;
    gap: 1.5rem;
  }

  .hero {
    padding-top: 7.5rem; /* prevent content cut-off since header is slightly taller on mobile */
  }
}

/* --- DYNAMIC TRANSITION VERB ACCENT --- */
#dynamic-verb {
  color: var(--accent-color);
  display: inline-block;
  font-weight: 500;
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border-bottom: 2px dashed var(--accent-color);
  padding-bottom: 2px;
}