:root {
  --bg: #f5f2ee;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #6b6560;
  --accent: #c8502a;
  --accent-light: #f0e8e4;
  --border: #e0dbd5;
  --card-bg: #faf8f6;
  --shadow: 0 4px 24px rgba(0,0,0,0.07);
  --radius: 12px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* New Color Customizations (#111111) */
  --hover-color: #111111;
  --btt-bg: #111111;
  --btt-text: #ffffff;
  --contact-btn-bg: #111111;
  --contact-btn-text: #ffffff;
}

[data-theme="dark"] {
  --bg: #141210;
  --surface: #1e1b18;
  --text: #ede8e2;
  --muted: #9a9088;
  --accent: #e06a40;
  --accent-light: #2a2018;
  --border: #2e2a26;
  --card-bg: #242018;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  
  /* Accessible dark theme color inversions for readability */
  --hover-color: #ffffff;
  --btt-bg: #ede8e2;
  --btt-text: #141210;
  --contact-btn-bg: #ede8e2;
  --contact-btn-text: #141210;
}

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

html {
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: 'DM Sans', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  transition: background-color var(--transition), color var(--transition);
  line-height: 1.6;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.88);
  transition: background var(--transition), border-color var(--transition);
}

[data-theme="dark"] nav {
  background: rgba(20, 18, 16, 0.88);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  transition: color var(--transition);
  letter-spacing: 0.01em;
}

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

.theme-toggle {
  position: relative;
  width: 48px;
  height: 26px;
  cursor: pointer;
}

.theme-toggle input {
  display: none;
}

.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 99px;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  padding: 0 4px;
  justify-content: space-between;
}

.theme-toggle input:checked + .toggle-track {
  background: var(--accent);
}

.toggle-thumb {
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  top: 3px;
  left: 3px;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.theme-toggle input:checked ~ .toggle-thumb {
  transform: translateX(22px);
}

.toggle-icon {
  font-size: 11px;
  line-height: 1;
  user-select: none;
}

.hero {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 72px 32px 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.hero-text {
  flex: 1;
}

.hero-name {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 14px;
}

.hero-tagline {
  font-size: 1.05rem;
  color: var(--muted);
  font-weight: 300;
  max-width: 420px;
  line-height: 1.6;
}

.hero-avatar-wrap {
  flex-shrink: 0;
  position: relative;
}

.hero-avatar-inner {
  position: relative;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-avatar-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 64px 32px 100px;
  display: flex;
  flex-direction: column;
  gap: 64px;
  position: relative;
  z-index: 1;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.section-label h2 {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  white-space: nowrap;
}

.section-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.about-text {
  font-size: 0.97rem;
  color: var(--muted);
  line-height: 1.85;
  max-width: 780px;
}

.hobbies-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.hobby-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: default;
}

.hobby-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--hover-color);
}

.hobby-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.hobby-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
}

.fun-fact-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: background var(--transition), border-color var(--transition);
}

.fun-fact-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.fun-fact-header h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.05rem;
  font-weight: 700;
}

.mini-toggle {
  position: relative;
  width: 40px;
  height: 22px;
  cursor: pointer;
}

.mini-toggle input {
  display: none;
}

.mini-track {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 99px;
  transition: background var(--transition);
}

.mini-toggle input:checked + .mini-track {
  background: var(--accent);
}

.mini-thumb {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  top: 3px;
  left: 3px;
  transition: transform var(--transition);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.mini-toggle input:checked ~ .mini-thumb {
  transform: translateX(18px);
}

.toggle-btn {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  cursor: pointer;
  transition: all var(--transition);
}

.toggle-btn:hover {
  background: var(--accent-light);
  color: var(--hover-color);
  border-color: var(--hover-color);
}

.fun-fact-content {
  min-height: 48px;
  overflow: hidden;
}

.fun-fact-text {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.75;
  display: none;
  animation: fadeSlide 0.4s ease both;
}

.fun-fact-text.visible {
  display: block;
}

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.field-group label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.field-group input,
.field-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  appearance: none;
}

.field-group input:focus,
.field-group textarea:focus {
  border-color: var(--contact-btn-bg);
  box-shadow: 0 0 0 3px rgba(17, 17, 17, 0.12);
}

.field-group textarea {
  resize: vertical;
  min-height: 100px;
}

.full-width {
  grid-column: 1 / -1;
}

.send-btn {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
}

.btn-primary {
  background: var(--contact-btn-bg);
  color: var(--contact-btn-text);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 12px 30px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
  letter-spacing: 0.02em;
}

.btn-primary:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.success-msg {
  display: none;
  grid-column: 1 / -1;
  padding: 14px 18px;
  background: var(--accent-light);
  border: 1px solid var(--accent);
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--accent);
  font-weight: 500;
}

footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  transition: background var(--transition);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 22px 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--muted);
}

.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 200;
  width: 44px;
  height: 44px;
  background: var(--btt-bg);
  color: var(--btt-text);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 16px rgba(17, 17, 17, 0.25);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition), background var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.back-to-top:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

.fade-in {
  opacity: 0;
  transform: translateY(18px);
  animation: fadeIn 0.6s ease forwards;
}

.fade-in:nth-child(1) { animation-delay: 0.05s; }
.fade-in:nth-child(2) { animation-delay: 0.15s; }
.fade-in:nth-child(3) { animation-delay: 0.25s; }
.fade-in:nth-child(4) { animation-delay: 0.35s; }

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

@media (max-width: 768px) {
  .hobbies-grid { grid-template-columns: 1fr 1fr; }
  .hero-inner { flex-direction: column-reverse; align-items: flex-start; gap: 28px; }
  .hero-avatar-inner { width: 110px; height: 110px; }
  .nav-inner { padding: 0 20px; }
  main { padding: 48px 20px 80px; }
  .hero-inner { padding: 48px 20px 44px; }
}

@media (max-width: 480px) {
  .hobbies-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .back-to-top { bottom: 20px; right: 20px; }
}