/* ===================================
   Terminal Meets Editorial — Design System
   =================================== */

:root {
  --bg-primary: #0f0f0f;
  --bg-surface: #1a1a1a;
  --bg-surface-raised: #242424;
  --text-primary: #e8e6e3;
  --text-secondary: #9a9a9a;
  --accent: #d4a039;
  --accent-glow: rgba(212, 160, 57, 0.15);
  --accent-dim: #b8862d;
  --terminal-green: #4ade80;
  --terminal-red: #f87171;
  --terminal-yellow: #facc15;
  --font-mono: 'JetBrains Mono', monospace;
  --font-serif: 'Fraunces', Georgia, serif;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --transition-base: cubic-bezier(0.4, 0, 0.2, 1);
  --noise-opacity: 0.035;
  --diagram-filter: invert(0.88) hue-rotate(180deg);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-faint: rgba(255, 255, 255, 0.04);
  --shadow-card: rgba(0, 0, 0, 0.4);
  --shadow-chat: rgba(0, 0, 0, 0.5);
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #f5f2ed;
  --bg-surface: #eae6df;
  --bg-surface-raised: #fff;
  --text-primary: #1a1a1a;
  --text-secondary: #5a5650;
  --accent: #b07d1a;
  --accent-glow: rgba(176, 125, 26, 0.12);
  --accent-dim: #96690e;
  --terminal-green: #16a34a;
  --terminal-red: #dc2626;
  --terminal-yellow: #ca8a04;
  --diagram-filter: none;
  --noise-opacity: 0.02;
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-faint: rgba(0, 0, 0, 0.05);
  --shadow-card: rgba(0, 0, 0, 0.08);
  --shadow-chat: rgba(0, 0, 0, 0.15);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-serif);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.7;
  font-size: 1.05rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.3s ease, color 0.3s ease;
}

header, main, footer, .chat-container, .chat-header, .chat-messages,
.chat-input, .evolution-card, .message.bot, .message.user, .theme-toggle {
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--accent-dim);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* Noise Overlay */
.noise-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ===================================
   Header
   =================================== */

header {
  width: 100%;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--accent-glow);
  padding: 3rem 2rem 2.5rem;
  text-align: center;
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

/* Theme Toggle */
.theme-toggle {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.2s var(--transition-base), border-color 0.2s var(--transition-base);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent-dim);
}

.theme-toggle-icon {
  font-size: 1rem;
  line-height: 1;
}

header h1 {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  line-height: 1.15;
}

.typewriter {
  display: inline;
  overflow: hidden;
  white-space: nowrap;
  border: none;
  animation: typing 1.2s steps(13) forwards;
  max-width: 0;
  /* inline-block so max-width works, but inline flow so prompt stays on same line */
  display: inline-block;
  vertical-align: bottom;
}

.cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.8s step-end infinite;
}

@keyframes typing {
  from { max-width: 0; }
  to { max-width: 15ch; }
}

@keyframes blink {
  50% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .typewriter {
    max-width: none;
    animation: none;
  }
  .cursor {
    animation: none;
  }
}

.header-subtitle {
  font-family: var(--font-serif);
  color: var(--text-secondary);
  font-size: 1.15rem;
  margin-top: 0.6rem;
  font-style: italic;
  font-weight: 300;
}

/* ===================================
   Main Content
   =================================== */

main {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 4rem 2rem 2rem;
}

/* ===================================
   About Me — Asymmetric Grid
   =================================== */

.about-me {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: start;
  margin-bottom: 5rem;
}

.about-me__media {
  position: relative;
}

.about-me__media img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 2px solid rgba(212, 160, 57, 0.25);
  box-shadow: 0 0 40px var(--accent-glow), 0 4px 20px var(--shadow-card);
  display: block;
}

.about-me__text h2 {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1.2rem;
  letter-spacing: -0.3px;
}

.about-me__text p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 1.05rem;
  line-height: 1.8;
}

.about-me__text p:last-child {
  margin-bottom: 0;
}

/* ===================================
   Architecture Section
   =================================== */

.architecture {
  margin-bottom: 5rem;
}

.architecture h2 {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.architecture__subtitle {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.architecture h3 {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 2.5rem;
  margin-bottom: 0.8rem;
}

.architecture p {
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
  line-height: 1.8;
}

.architecture > img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  margin: 1.5rem 0 2rem;
  display: block;
  filter: var(--diagram-filter);
}

/* Evolution Cards */
.evolution-cards {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin: 2.5rem 0;
}

.evolution-card {
  flex: 1;
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  transition: border-color 0.3s var(--transition-base), box-shadow 0.3s var(--transition-base);
}

.evolution-card:hover {
  border-color: var(--accent-dim);
  box-shadow: 0 0 24px var(--accent-glow);
}

.card-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: var(--accent);
  color: var(--bg-primary);
  padding: 0.2rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 0.8rem;
}

.evolution-card h4 {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.8rem;
}

.evolution-card img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin-bottom: 0.8rem;
  border: 1px solid var(--border-faint);
  filter: var(--diagram-filter);
}

.evolution-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
}

.evolution-arrow {
  flex: 0 0 auto;
  text-align: center;
  padding: 0 0.5rem;
}

.evolution-arrow span {
  display: block;
  font-size: 2rem;
  color: var(--accent);
  font-weight: 700;
  font-family: var(--font-mono);
}

.evolution-arrow p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-style: italic;
  margin: 0.3rem 0 0;
}

/* ===================================
   Chat Widget — Terminal Style
   =================================== */

.chat-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 360px;
  max-width: 90vw;
  max-height: 500px;
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 8px 40px var(--shadow-chat);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 1000;
  font-size: 0.95rem;
}

.chat-header {
  background: var(--bg-surface-raised);
  color: var(--text-primary);
  padding: 0.8rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  border-bottom: 1px solid var(--border-subtle);
  user-select: none;
}

.chat-terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.chat-terminal-dot.red {
  background: var(--terminal-red);
}

.chat-terminal-dot.yellow {
  background: var(--terminal-yellow);
}

.chat-terminal-dot.green {
  background: var(--terminal-green);
}

.chat-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-left: 0.5rem;
  letter-spacing: 0.3px;
}

.chat-messages {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  background: var(--bg-primary);
  display: none;
}

.chat-input {
  display: none;
  align-items: center;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  padding-left: 1rem;
}

.input-prompt {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.9rem;
  flex-shrink: 0;
}

.chat-input input {
  flex: 1;
  padding: 0.8rem 0.6rem;
  border: none;
  outline: none;
  font-size: 0.95rem;
  font-family: var(--font-mono);
  background: transparent;
  color: var(--text-primary);
}

.chat-input input::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.chat-input button {
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  padding: 0.8rem 1.2rem;
  cursor: pointer;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: background 0.2s var(--transition-base);
}

.chat-input button:hover {
  background: var(--accent-dim);
}

/* Chat Messages */
.message {
  margin-bottom: 0.8rem;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-md);
  max-width: 85%;
  word-break: break-word;
  font-size: 0.9rem;
  line-height: 1.5;
}

.message.bot {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-faint);
  font-family: var(--font-mono);
}

.message.bot .bot-prompt {
  color: var(--accent);
  margin-right: 0.4rem;
}

.message.bot a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.message.bot a:hover {
  color: var(--text-primary);
}

.message.user {
  background: var(--accent);
  color: var(--bg-primary);
  margin-left: auto;
  font-family: var(--font-mono);
  font-weight: 500;
}

/* ===================================
   Footer
   =================================== */

footer {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-family: var(--font-mono);
  border-top: 1px solid var(--border-faint);
  margin-top: 2rem;
}

/* ===================================
   Reveal Animations
   =================================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--transition-base), transform 0.6s var(--transition-base);
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ===================================
   Resume Request (hidden — for future use)
   =================================== */

.resume-request {
  max-width: 600px;
  margin: 3rem auto 0;
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 2.5rem 2rem;
  text-align: center;
}

.resume-request h2 {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.8rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

#resume-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
}

#resume-form label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 1rem;
}

#resume-email {
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  width: 100%;
  max-width: 320px;
  background: var(--bg-surface-raised);
  color: var(--text-primary);
  font-family: var(--font-mono);
}

#resume-form button {
  padding: 0.6rem 1.5rem;
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--font-mono);
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: background 0.2s var(--transition-base);
  margin-top: 0.5rem;
}

#resume-form button:hover {
  background: var(--accent-dim);
}

#resume-form-message {
  margin-top: 1rem;
  font-size: 0.95rem;
  min-height: 1.2em;
  color: var(--accent);
  font-family: var(--font-mono);
}

/* ===================================
   Responsive
   =================================== */

@media (max-width: 768px) {
  header {
    padding: 2rem 1.5rem 1.8rem;
  }

  main {
    padding: 2.5rem 1.2rem 1.5rem;
  }

  .about-me {
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3.5rem;
  }

  .about-me__media img {
    max-width: 200px;
    margin: 0 auto;
  }

  .about-me__text {
    text-align: center;
  }

  .architecture {
    margin-bottom: 3.5rem;
  }

  .evolution-cards {
    flex-direction: column;
    gap: 1rem;
  }

  .evolution-arrow span {
    transform: rotate(90deg);
    display: inline-block;
  }

  .chat-container {
    right: 8px;
    bottom: 8px;
    width: calc(100vw - 16px);
    max-width: calc(100vw - 16px);
  }
}