:root {
  --bg-color:        #ffffff;
  --text-color:      #1f1f1f;
  --primary-color:   #3b82f6;
  --secondary-color: #64748b;
  --card-bg:         #f8fafc;
  --border-color:    #e2e8f0;
  --shadow:          0 4px 6px -1px rgba(0, 0, 0, 0.1);

  --c-tg: #0088CC;
  --c-yt: #FF0000;
  --c-dc: #5865F2;
  --c-af: #39ff14;
  --c-fb: #4267B2;

  --radius: 12px;
  --transition: 0.22s ease;
}

[data-theme="dark"] {
  --bg-color:        #0f172a;
  --text-color:      #f1f5f9;
  --primary-color:   #60a5fa;
  --secondary-color: #94a3b8;
  --card-bg:         #1e293b;
  --border-color:    #334155;
  --shadow:          0 4px 6px -1px rgba(0, 0, 0, 0.5);
}
*, *::before, *::after { 
  box-sizing: border-box; 
  margin: 0; 
  padding: 0; 
  outline: none !important;
  -webkit-tap-highlight-color: transparent;
}
html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.page {
  width: 100%;
  max-width: 620px;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.topbar {
  display: flex;
  justify-content: flex-end;
  padding: 20px 0 0;
}

.theme-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--secondary-color);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: border-color var(--transition), color var(--transition);
}

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

.hero {
  padding: 52px 0 44px;
  border-bottom: 1px solid var(--border-color);
}

.hero-name {
  font-family: 'Sora', sans-serif;
  font-size: clamp(2rem, 6vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.12;
  margin-bottom: 12px;
}

.hero-name span {
  color: var(--primary-color);
}

.hero-desc {
  color: var(--secondary-color);
  font-size: 0.93rem;
  max-width: 400px;
  line-height: 1.75;
}

section {
  padding: 36px 0;
  border-bottom: 1px solid var(--border-color);
}

.section-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--secondary-color);
  margin-bottom: 18px;
}

.hobby-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hobby-list li {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.hobby-list li:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow);
}

.hobby-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 13px;
  flex-shrink: 0;
}

.socials-section {
  border-bottom: none;
}

.toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-color);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.87rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
  margin-bottom: 18px;
}

.toggle-btn:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.toggle-btn .chevron {
  font-size: 10px;
  transition: transform 0.3s ease;
}

.toggle-btn.open .chevron {
  transform: rotate(180deg);
}

.socials-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition:
    max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.3s ease;
}

.socials-list.active {
  max-height: 600px;
  opacity: 1;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-color);
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.social-link:hover {
  border-color: transparent;
  color: #fff;
  transform: translateX(4px);
}

.social-link.tg:hover { background: var(--c-tg); box-shadow: 0 4px 14px rgba(0,136,204,0.3); }
.social-link.yt:hover { background: var(--c-yt); box-shadow: 0 4px 14px rgba(255,0,0,0.3); }
.social-link.dc:hover { background: var(--c-dc); box-shadow: 0 4px 14px rgba(88,101,242,0.3); }
.social-link.af:hover { background: var(--c-af); color: #111; box-shadow: 0 4px 14px rgba(57,255,20,0.3); }
.social-link.fb:hover { background: var(--c-fb); box-shadow: 0 4px 14px rgba(66,103,178,0.3); }

.s-icon {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition);
}

.tg .s-icon { background: rgba(0,136,204,0.1);   color: var(--c-tg); }
.yt .s-icon { background: rgba(255,0,0,0.1);      color: var(--c-yt); }
.dc .s-icon { background: rgba(88,101,242,0.1);   color: var(--c-dc); }
.af .s-icon { background: rgba(57,255,20,0.1);    color: #22c50a; }
.fb .s-icon { background: rgba(66,103,178,0.1);   color: var(--c-fb); }

.social-link:hover .s-icon {
  background: rgba(255,255,255,0.2);
  color: inherit;
}

.social-link.af:hover .s-icon { color: #111; }

.s-arrow {
  margin-left: auto;
  font-size: 11px;
  color: var(--secondary-color);
  opacity: 0;
  transform: translateX(-4px);
  transition: all var(--transition);
}

.social-link:hover .s-arrow {
  opacity: 1;
  transform: translateX(0);
  color: rgba(255,255,255,0.8);
}

.social-link.af:hover .s-arrow { color: rgba(0,0,0,0.5); }

footer {
  padding: 24px 0 32px;
  margin-top: auto;
}

footer p {
  font-size: 0.78rem;
  color: var(--secondary-color);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero                  { animation: fadeIn 0.5s ease both; }
section:nth-of-type(1) { animation: fadeIn 0.5s 0.1s ease both; }
section:nth-of-type(2) { animation: fadeIn 0.5s 0.18s ease both; }
footer                 { animation: fadeIn 0.5s 0.26s ease both; }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }

@media (max-width: 480px) {
  .hero { padding: 36px 0 32px; }
  .hero-name { font-size: 1.9rem; }
}

#hobby-list {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition:
    max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.3s ease;
}

#hobby-list.active {
  max-height: 600px;
  opacity: 1;
}