/* ============================================
   PORTFOLIO - TWO PANE LAYOUT
   Fixed Left Pane + Scrollable Right Content
   ============================================ */

/* ============================================
   CSS Variables
   ============================================ */
:root {
  /* Colors - Dark Theme (White on Black) */
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #1f2937;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.85);
  --text-tertiary: rgba(255, 255, 255, 0.65);
  
  /* Accent Colors */
  --accent-primary: #58a6ff;
  --accent-secondary: #79c0ff;
  --accent-purple: #bc8cff;
  --accent-cyan: #56d4dd;
  --accent-green: #3fb950;
  --accent-orange: #f78166;
  --accent-pink: #ff7ab9;
  
  /* Link Colors */
  --link-color: #ffffff;
  --link-hover: #e5e5e5;
  
  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.15);
  --border-medium: rgba(255, 255, 255, 0.25);
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-display: 'Space Grotesk', var(--font-primary);
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  
  /* Spacing */
  --gap-panes: 4.5rem;
  --left-pane-width: 420px;
  
  /* Components */
  /* Make terminal smaller by default */
  --terminal-max-h: clamp(500px, 100vh, 550px);
  --terminal-max-w: 100%; /* let terminal grow with container/screen */
  --terminal-min-h: 220px; /* minimum resizable height */
  --terminal-init-h: clamp(300px, 45vh, 500px); /* initial height so resize handle appears */

  /* Cursor */
  --cursor-color: #ffffff;

  /* Name shadow (screenshot-style) */
  /* On dark backgrounds, a light offset reads better than black */
  --name-shadow-block: rgba(255, 255, 255, 0.25);
  --name-shadow-soft: rgba(0, 0, 0, 0.45);
}

/* Light theme variables */
:root[data-theme="light"] {
  /* Colors - Light Theme (Black on White) */
  --bg-primary: #f7f8fb;
  --bg-secondary: #ffffff;
  --bg-tertiary: #edf1f5;
  --bg-card: rgba(0, 0, 0, 0.04);
  --bg-card-hover: rgba(0, 0, 0, 0.07);
  --text-primary: #0b0b10;
  --text-secondary: rgba(0, 0, 0, 0.7);
  --text-tertiary: rgba(0, 0, 0, 0.55);

  --link-color: #000000;
  --link-hover: #333333;

  --border-subtle: rgba(0, 0, 0, 0.12);
  --border-medium: rgba(0, 0, 0, 0.2);

  /* Cursor */
  --cursor-color: #000000;

  /* Name shadow (lighter, still visible on white) */
  --name-shadow-block: rgba(0, 0, 0, 0.28);
  --name-shadow-soft: rgba(0, 0, 0, 0.16);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Prevent iOS from auto-zooming text or changing sizes unexpectedly */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* Prevent iOS text inflation / random zoom jumps */
html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Defensive: prevent any child overflow from expanding layout width */
html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: clip;
}

/* Avoid rare horizontal scroll from transformed children */
.container-split,
.left-pane,
.right-pane {
  min-width: 0;
}

/* ============================================
   Custom Cursor (dot)
   ============================================ */
@media (pointer: fine) {
  /* Hide the system cursor by default, but keep it for interactive elements */
  body { cursor: none; }
  a, button, .btn, .terminal-btn, [role="button"], input, textarea, select, .clickable { cursor: pointer; }

  .cursor-dot {
    position: fixed;
    top: 0;
    left: 0;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cursor-color);
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    /* Remove transform transition so cursor tracks instantly */
    transition: opacity 200ms ease, background-color 200ms ease;
  }

  .cursor-dot.hover { transform: translate(-50%, -50%) scale(1.8); }
  .cursor-dot.active { transform: translate(-50%, -50%) scale(0.9); }
  .cursor-dot.hidden { opacity: 0; }
}

/* ============================================
   Noise Texture Overlay
   ============================================ */
.noise {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.03;
  z-index: 1000;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='3.5' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* ============================================
   Main Split Container
   ============================================ */
.container-split {
  display: flex;
  min-height: 100vh;
  gap: var(--gap-panes);
  padding: clamp(1rem, 2vw, 2rem);
  width: 100%;
  max-width: 1440px; /* keep equal left/right outer space */
  margin-inline: auto;
}

/* Ensure safe-area padding even before mobile breakpoint triggers */
@supports (padding: max(0px)) {
  .container-split {
    padding-left: max(clamp(1rem, 2vw, 2rem), env(safe-area-inset-left));
    padding-right: max(clamp(1rem, 2vw, 2rem), env(safe-area-inset-right));
  }
}

/* ============================================
   Left Pane - Fixed Profile Section
   ============================================ */
.left-pane {
  position: sticky;
  top: 2rem;
  width: clamp(260px, 28vw, 360px);
  height: fit-content;
  flex-shrink: 0;
  display: flex;
  align-items: top;
  min-height: calc(100vh - 4rem);
}

.left-pane {
  padding-right: clamp(1.5rem, 3vw, 2.5rem);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.profile-section {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  box-shadow: none;
  width: 100%;
  /* Nudge content up without moving divider line */
  /* transform: translateY(-5%); */
}

/* Profile Image */
.profile-image-wrapper {
  position: relative;
  width: min(200px, 70%);
  height: min(200px, 70vw);
  aspect-ratio: 1;
  border-radius: clamp(12px, 1.5vw, 18px);
  /* Allow badge to hang outside the right edge */
  overflow: visible;
  border: none;
  box-shadow: none;
  margin-bottom: clamp(2rem, 4vw, 4rem);
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* Keep rounded corners when wrapper overflow is visible */
  border-radius: clamp(12px, 1.5vw, 18px);
  transition: transform 0.3s ease;
}

.profile-image-wrapper:hover .profile-image {
  transform: scale(1.05);
}

/* Role badge overlay on photo (bottom-right) */
.profile-image-wrapper .role-badge.role-badge--by-photo {
  position: absolute;
  bottom: 0px;               /* touch bottom edge */
  left: 100%;                /* anchor to right edge of photo */
  right: auto;
  top: auto;
  /* 80% over the photo, 20% outside */
  transform: translateX(-80%);
  white-space: nowrap;
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-sm);
  border-radius: 14px;
  padding: 0.2rem 0.25rem;
  backdrop-filter: saturate(140%) blur(10px);
  z-index: 2;
  pointer-events: none;
  max-width: none;
  box-sizing: border-box; /* JS width includes padding */
  display: inline-flex;
  justify-content: center; /* center horizontally */
  align-items: center;      /* center vertically */
  text-align: center;
}

/* Prevent occasional overflow glitches on mobile while JS recalculates width */
.profile-image-wrapper .role-badge.role-badge--by-photo .role-article,
.profile-image-wrapper .role-badge.role-badge--by-photo .role-text {
  min-width: 0;
}

/* Light theme tweak for the badge over the photo */
:root[data-theme="light"] .profile-image-wrapper .role-badge.role-badge--by-photo {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border-medium);
}

/* ============================================
   Theme Toggle Button
   ============================================ */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 1100;
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  width: 42px;
  height: 42px;
  padding: 0;
  line-height: 1;
  display: grid;
  place-items: center;
  gap: 0;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, transform 120ms ease;
}
.theme-toggle:hover { background: var(--bg-card-hover); }
.theme-toggle:active { transform: scale(0.98); }
.theme-toggle .label { font-size: 0.9rem; display: none; }

/* Center emoji icon visually */
.theme-toggle .icon {
  font-size: 1rem;
  line-height: 1;
  display: inline-block;
}

.profile-image-wrapper .role-badge.role-badge--by-photo .role-article {
  color: var(--text-primary);
  font-size: clamp(0.8rem, 1.8vw, 0.95rem);
}

.profile-image-wrapper .role-badge.role-badge--by-photo .role-text {
  color: #3b82f6;
  font-weight: 700;
  font-size: clamp(0.95rem, 2.2vw, 1.05rem);
}

/* Name */
.profile-name {
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 3.5vw, 1.875rem);
  font-weight: 700;
  margin: 0 0 clamp(0.4rem, 1.2vw, 0.9rem) 0;
  color: var(--text-primary);
  text-align: center;
  width: 100%;
  text-decoration: none;
  /* Screenshot-style: crisp offset block shadow + subtle depth */
  text-shadow:
    3px 3px 0 var(--name-shadow-block),
    6px 6px 14px var(--name-shadow-soft);
}

/* Softer effect in light theme so it doesn't look heavy */
:root[data-theme="light"] .profile-name {
  /* Keep the same geometry in light mode; vars handle contrast */
  text-shadow:
    3px 3px 0 var(--name-shadow-block),
    6px 6px 14px var(--name-shadow-soft);
}

/* Ensure visited state keeps color/shadow */
.profile-name:visited { color: var(--text-primary); }

.profile-name:hover { color: var(--link-hover); }

/* Profile Links */
.profile-links {
  display: flex;
  flex-direction: column;
  gap: clamp(1.05rem, 3.2vw, 2.1rem); /* reduced slightly */
  width: 100%;
  align-items: center;
}

.profile-link {
  display: inline-flex;
  align-items: center;
  gap: clamp(0.45rem, 0.9vw, 0.65rem);
  padding: 0.25rem 0.4rem; /* reduced slightly */
  background: transparent;
  border: none;
  color: #3b82f6; /* match role text blue */
  text-decoration: none;
  font-weight: 600;
  font-size: clamp(0.95rem, 1.8vw, 1.05rem); /* reduced slightly */
  line-height: 1.5;
  transition: color 180ms ease, transform 180ms ease;
}

/* Better accessibility/tap targets on touch */
.profile-link {
  -webkit-tap-highlight-color: transparent;
}
.profile-link:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 4px;
  border-radius: 10px;
}

.profile-link::before {
  display: none;
}

.profile-link:hover {
  transform: translateX(2px);
  color: #60a5fa; /* lighter blue on hover */
}

.profile-link svg {
  width: clamp(17px, 2.6vw, 20px);  /* reduced slightly */
  height: clamp(17px, 2.6vw, 20px);
  flex-shrink: 0;
  color: currentColor;
}

/* ============================================
   Right Pane - Main Content (Scrollable)
   ============================================ */
.right-pane {
  flex: 1;
  max-width: min(900px, 60vw); /* decreased width */
  display: flex;
  flex-direction: column;
  gap: clamp(2rem, 4vw, 3rem);
  padding-bottom: clamp(2rem, 5vw, 4rem);
}

/* ============================================
   Mobile Down Arrow Navigation
   ============================================ */
.mobile-down-nav {
  display: none; /* hidden by default; show on mobile */
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transition: background 160ms ease, transform 200ms ease, border-color 160ms ease, opacity 220ms ease;
  opacity: 0.96;
}
.mobile-down-nav:hover { background: var(--bg-card-hover); }
.mobile-down-nav:active { transform: scale(0.98); }

@media (max-width: 768px) {
  .mobile-down-nav {
    display: grid;
    position: fixed; /* always visible at bottom center on first page */
    left: 50%;
    transform: translateX(-50%);
    bottom: calc(clamp(12px, 3vw, 20px) + env(safe-area-inset-bottom));
    margin: 0; /* override any margins */
    z-index: 1150;
    background: rgba(0, 0, 0, 0.38); /* translucent */
    backdrop-filter: saturate(140%) blur(8px);
  }
}

/* Light theme translucency */
:root[data-theme="light"] .mobile-down-nav {
  background: rgba(255, 255, 255, 0.6);
}

/* Hidden state after user starts scrolling/interacts */
@media (max-width: 768px) {
  .mobile-down-nav.is-hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateX(-50%) translateY(8px);
  }
}

/* Tighter top alignment like screenshot */
.right-pane > :first-child {
  margin-top: 0.25rem;
}

/* ============================================
   Hero Title Section
   ============================================ */
.hero {
  margin-top: clamp(0.5rem, 1.5vw, 1.25rem);
}

.hero-intro {
  display: flex;
  flex-direction: column;
  gap: clamp(0.4rem, 1vw, 0.65rem);
}

.hero-line {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.4vw, 1rem);
}

.hero-word {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.01em;
  font-size: clamp(2.5rem, 8vw, 5rem);
  line-height: 0.95;
  color: var(--text-primary);
  /* Stronger layered shadow for depth */
  text-shadow: 0.12em 0.12em 0 rgba(255, 255, 255, 0.12), 0.22em 0.22em 0 rgba(0, 0, 0, 0.55);
}

.hero-dot {
  width: clamp(10px, 1.6vw, 14px);
  height: clamp(10px, 1.6vw, 14px);
  border-radius: 50%;
  background: #8b5cf6;
  /* Stronger dot shadow */
  box-shadow: 0.22em 0.22em 0 rgba(0,0,0,0.55);
}

.role-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.role-article {
  font-size: clamp(0.9rem, 2.4vw, 1rem);
  color: var(--text-secondary);
  transition: transform 300ms ease, opacity 300ms ease;
  will-change: transform, opacity;
}

.role-text {
  font-weight: 700;
  font-size: clamp(0.95rem, 2.8vw, 1.15rem);
  color: #3b82f6;
  transition: transform 300ms ease, opacity 300ms ease;
  will-change: transform, opacity;
}

.role-text.is-changing {
  transform: translateY(6px) scale(0.98);
  opacity: 0;
}

/* Animate article similarly when changing */
.role-article.is-changing {
  transform: translateY(6px) scale(0.98);
  opacity: 0.5;
}

/* Left-pane placement tweaks */
.hero-left {
  align-self: stretch;
  text-align: center;
  margin-top: clamp(0.75rem, 2vw, 1rem);
  /* Increased gap between name (hero) and buttons */
  margin-bottom: clamp(2rem, 5vw, 3rem);
}

.left-pane .hero-intro { align-items: center; }

/* Ensure each hero line centers horizontally in the left pane */
.left-pane .hero-line { width: 100%; justify-content: center; }

/* Placement tweaks for split hero */
.hero-top {
  margin-top: clamp(0.25rem, 1vw, 0.5rem);
  margin-bottom: clamp(0.4rem, 1.2vw, 0.9rem); /* tighter space above photo */
}

.hero-bottom {
  margin-top: clamp(1rem, 3vw, 1.75rem); /* space below photo */
}

.left-pane .hero-word {
  font-size: clamp(1.4rem, 5vw, 1.8rem);
  /* Soften the name shadow specifically in the left pane */
  text-shadow: 0.06em 0.06em 0 rgba(255, 255, 255, 0.08),
               0.12em 0.12em 0 rgba(0, 0, 0, 0.3);
}

.left-pane .role-article { font-size: clamp(0.85rem, 2.2vw, 0.95rem); }
.left-pane .role-text { font-size: clamp(0.9rem, 2.4vw, 1.05rem); }

/* ============================================
   Terminal Section
   ============================================ */
.terminal-section {
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.terminal-window {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  /* Enable manual resize from bottom-right */
  resize: vertical;
  min-height: var(--terminal-min-h);
  height: var(--terminal-init-h);
  max-height: var(--terminal-max-h);
  max-width: var(--terminal-max-w);
  width: 100%;             /* responsive: fill small screens, cap on large */
  margin-inline: auto;     /* center horizontally within right pane */
  display: flex;
  flex-direction: column;
}

/* On touch devices, disable manual resizing (awkward on iOS/Android) */
@media (pointer: coarse) {
  .terminal-window { resize: none; }
}

.terminal-header {
  background: var(--bg-tertiary);
  padding: 0.5rem 1rem;    /* reduced header height */
  display: flex;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-buttons {
  display: flex;
  gap: 0.5rem;
}

.terminal-btn {
  width: 10px;            /* slightly smaller buttons */
  height: 10px;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.terminal-btn:hover {
  transform: scale(1.2);
}

.terminal-btn.close {
  background: #ff5f56;
}

.terminal-btn.minimize {
  background: #ffbd2e;
}

.terminal-btn.maximize {
  background: #27c93f;
}

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.terminal-body {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  padding: 1rem;           /* tighter padding for smaller terminal */
  line-height: 1.2;        /* tighter line height to remove extra spacing */
  user-select: text;
  -webkit-user-select: text;
  overflow-y: auto;        /* scroll vertically inside terminal */
  overflow-x: hidden;      /* prevent horizontal scrollbars; wrap long text */
  -webkit-overflow-scrolling: touch; /* smooth on iOS */
  overscroll-behavior: contain;      /* prevent page scroll chaining */
  flex: 1;                 /* fill window and keep header fixed */
}

.terminal-line {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0;        /* remove extra spacing between lines */
  user-select: text;
  -webkit-user-select: text;
  min-width: 0;            /* allow flex children to shrink/wrap */
  max-width: 100%;         /* keep lines within terminal body */
}

.terminal-prompt {
  color: var(--accent-green);
  font-weight: 600;
  flex-shrink: 0;
}

.terminal-command {
  color: var(--accent-secondary);
  overflow-wrap: anywhere; /* wrap long commands instead of overflowing */
  word-break: break-word;
  min-width: 0;
}

.terminal-input {
  flex: 1;
  min-width: 0;            /* critical: allow flex item to shrink on iOS */
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: inherit;
  line-height: 1.2;        /* match tighter line height */
  padding: 0;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;        /* when typing long commands, scroll instead of shifting layout */
  white-space: pre;        /* keep command on one line; input scrolls horizontally */
  -webkit-overflow-scrolling: touch;
}

/* Mobile: slightly tighter prompt + safer wrapping behavior */
@media (max-width: 768px) {
  .terminal-line {
    gap: 0.5rem;
  }
}

.terminal-output {
  color: var(--text-secondary);
  margin-left: 0;
  margin-bottom: 1.5rem;
  user-select: text;
  -webkit-user-select: text;
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* Ensure pre/code in the terminal can wrap on small screens */
.terminal-body pre,
.terminal-body code {
  white-space: pre-wrap;
  word-break: break-word;
}

/* General text wrapping to avoid horizontal overflow on phones */
p, li, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

.terminal-output p {
  margin-bottom: 0;        /* remove spacing between output lines */
}

/* Help list formatting: no native bullets, keep leading dashes in text */
.terminal-output .terminal-list,
.terminal-list,
.terminal-list li {
  list-style: none;
  margin: 0;
  padding-left: 0;
}

.terminal-highlight {
  color: var(--accent-cyan);
  font-weight: 600;
}

.terminal-cursor {
  color: var(--text-primary);
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* ============================================
   Content Sections
   ============================================ */
.about-section,
.research-section {
  animation: fadeInUp 0.6s ease-out;
  animation-fill-mode: both;
}

.about-section {
  animation-delay: 0.2s;
}

.research-section {
  animation-delay: 0.4s;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Underline accent similar to screenshot */
.section-title {
  position: relative;
  padding-bottom: 0.75rem;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--border-medium);
}

.content-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.content-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-purple), var(--accent-cyan));
  opacity: 0.6;
}

.content-card p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.content-card p:last-child {
  margin-bottom: 0;
}

.content-card strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Research Topics */
.research-topics {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.topic-item {
  display: flex;
  gap: 1.25rem;
  padding: 1.5rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.topic-item:hover {
  border-color: var(--accent-secondary);
  transform: translateX(5px);
  box-shadow: 0 4px 12px rgba(88, 166, 255, 0.15);
}

.topic-icon {
  font-size: 2rem;
  flex-shrink: 0;
  filter: grayscale(0.2) brightness(1.1);
  transition: filter 0.3s ease;
}

.topic-item:hover .topic-icon {
  filter: grayscale(0) brightness(1.3);
}

.topic-content h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.topic-content p {
  color: var(--text-tertiary);
  font-size: 0.9375rem;
  margin: 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 2rem 0;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.875rem;
  border-top: 1px solid var(--border-subtle);
  margin-top: 3rem;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1200px) {
  :root {
    --gap-panes: 3rem;
  }
}

/* Scale base font-size down on smaller screens */
@media (max-width: 680px) {
  html { font-size: 15px; }
}
@media (max-width: 480px) {
  html { font-size: 14px; }
}

/* Stack panes later so they stay side-by-side longer */
@media (max-width: 768px) {
  .container-split {
    flex-direction: column;
    gap: 3rem;
    /* Leave a small gutter on both sides incl. safe-area */
    padding-left: calc(clamp(16px, 5vw, 24px) + env(safe-area-inset-left));
    padding-right: calc(clamp(16px, 5vw, 24px) + env(safe-area-inset-right));
  }
  
  .left-pane {
    position: relative;
    top: 0;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    padding-right: 0;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 3rem;
    min-height: auto; /* avoid full-viewport left pane on mobile */
  }
  
  .right-pane {
    max-width: 100%;
  }

  /* Make links easier to tap without changing desktop look */
  .profile-link {
    padding: 0.5rem 0.75rem;
    border-radius: 12px;
  }
}

@media (max-width: 768px) {
  .terminal-body {
    font-size: 1rem;       /* 16px to avoid iOS input zoom */
    line-height: 1.35;
    padding: 1rem;
  }
  
  .content-card {
    padding: 1.5rem;
  }
  
  .topic-item {
    flex-direction: column;
    gap: 1rem;
  }
}

/* Ensure form controls are >=16px on mobile to prevent iOS zoom */
@media (max-width: 768px) {
  input, textarea, select, .terminal-input {
    font-size: 16px;
  }
}

/* Mobile/tablet: ensure badge overlays 40% of its width on the photo */
@media (max-width: 992px) {
  .profile-image-wrapper .role-badge.role-badge--by-photo {
    bottom: 0;              /* touch bottom of the image */
    left: 100%;             /* keep the same anchored hang */
    right: auto;
    top: auto;
    /* Keep ~80% over photo on smaller screens too */
    transform: translateX(-80%);
    max-width: none;
  }
  .profile-image-wrapper {
    margin-bottom: clamp(2rem, 6vw, 3.25rem);
  }
}

@media (max-width: 480px) {
  .profile-image-wrapper {
    /* Slightly larger portrait on phones, responsive to viewport */
    width: clamp(200px, 70vw, 260px);
    height: auto; /* keep aspect ratio */
  }
  /* Keep name size consistent on phones */
  .profile-name {
    font-size: 30px; /* fixed size, independent of vw/rem scaling */
  }
  .profile-image-wrapper .role-badge.role-badge--by-photo {
    bottom: 0;
    left: 100%;
    right: auto;
    top: auto;
    transform: translateX(-80%);
    padding: 0.2rem 0.5rem;
    white-space: nowrap;      /* do not wrap text */
    overflow: visible;        /* allow box to extend beyond photo if needed */
  }
  /* Bump rotating role text sizes on phones */
  .profile-image-wrapper .role-badge.role-badge--by-photo .role-text {
    font-size: clamp(1.1rem, 5vw, 1.35rem);
  }
  .profile-image-wrapper .role-badge.role-badge--by-photo .role-article {
    font-size: clamp(0.9rem, 3.5vw, 1.05rem);
  }
  .profile-links {
    gap: 1rem;
  }

  /* Reduce huge shadows that can visually clip on tiny screens */
  .profile-name {
    text-shadow: 2px 2px 0 var(--name-shadow-block), 4px 4px 10px var(--name-shadow-soft);
  }

  /* Light theme: make the block shadow subtler on phones */
  :root[data-theme="light"] .profile-name {
    text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.18), 4px 4px 10px rgba(0, 0, 0, 0.12);
  }

  .terminal-header {
    padding: 0.5rem 0.75rem;
  }
  .terminal-body {
    padding: 0.85rem;
  }
  /* Better placement inside notches/rounded corners */
  .theme-toggle {
    right: calc(16px + env(safe-area-inset-right));
    top: calc(12px + env(safe-area-inset-top));
    /* Make the toggle a bit smaller on mobile */
    width: 36px;
    height: 36px;
  }
  .theme-toggle .icon { font-size: 0.9rem; }
}

/* Media utility: images and embeds scale down on small viewports */
img, video { max-width: 100%; height: auto; }

/* Improve tap behavior on mobile */
button, a { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }