.page-section {
  display: none !important;
}

.page-section.active-page {
  display: block !important;
  width: 100%;
  min-height: 100vh;
}

:root {
  --orange: #8B1A2E;
  --orange-light: #A52035;
  --orange-pale: #F9EEF0;
  --dark: #1A1208;
  --gray: #6B6860;
  --border: #F0EDE8;
  --bg: #FAFAF8;
  --card-bg: #FFFFFF;
  --nav-bg: #FFFFFF;
  --text: #1A1208;
  --stats-bg: #1A1208;
  --sem-bg: #F9EEF0;
  --card: #FFFFFF;
  --sidebar: #1C0A0F;
  --sidebar-text: rgba(255,255,255,0.75)
}

body.dark {
  --bg: #111010;
  --card-bg: #1E1C1A;
  --nav-bg: #1A1816;
  --text: #F0EDE8;
  --gray: #9E9890;
  --border: #2E2C28;
  --orange-pale: #2A1A10;
  --stats-bg: #0A0908;
  --sem-bg: #1A1208;
  --card: #1E1C1A;
  --sidebar: #161412
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
  min-height: 100vh;
}

nav {
  display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 60px;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background 0.3s, border-color 0.3s;
}

.logo {
  font-family: 'Syne', sans-serif; font-size: 24px; font-weight: 800; color: var(--text);
}

.logo span {
  color: var(--orange);
}

.nav-links {
  display: flex; gap: 36px; list-style: none;
}

.nav-links a {
  text-decoration: none; color: var(--gray); font-size: 15px; font-weight: 500; transition: color 0.2s;
}

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

.nav-controls {
  display: flex; align-items: center; gap: 10px;
}

.theme-toggle {
  width: 48px; height: 26px;
    background: var(--border);
    border-radius: 100px;
    border: none;
    cursor: pointer;
    position: relative;
    transition: background 0.3s;
}

.theme-toggle.dark-on {
  background: var(--orange);
}

.theme-knob {
  width: 20px; height: 20px;
    background: white;
    border-radius: 50%;
    position: absolute;
    top: 3px; left: 3px;
    transition: transform 0.3s;
    font-size: 11px;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.theme-toggle.dark-on .theme-knob {
  transform: translateX(22px);
}

.nav-btn {
  background: var(--orange);
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 8px;
    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.nav-btn:hover {
  background: var(--orange-light); transform: translateY(-1px);
}

.hero-section {
  background: var(--card-bg); border-bottom: 1px solid var(--border); transition: background 0.3s, border-color 0.3s;
}