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

    :root {
      --bg: #0D0D0F;
      --bg-card: #16161A;
      --bg-card-hover: #1C1C22;
      --border: #2A2A2F;
      --text: #E5E5E5;
      --text-dim: #8A8A94;
      --orange: #F4722B;
      --orange-glow: rgba(244, 114, 43, 0.15);
      --gold: #FBBF24;
      --green: #10B981;
      --blue: #3B82F6;
    }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
      line-height: 1.6;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    a { color: var(--orange); text-decoration: none; transition: opacity .2s; }
    a:hover { opacity: .8; }

    /* ── Header ── */
    .header {
      position: sticky; top: 0; z-index: 100;
      background: rgba(13,13,15,.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      padding: 0 24px;
    }
    .header-inner {
      max-width: 1200px; margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between;
      height: 60px;
    }
    .logo {
      display: flex; align-items: center; gap: 10px;
      font-size: 20px; font-weight: 700; color: var(--text);
    }
    .logo-icon {
      width: 32px; height: 32px;
      background: linear-gradient(135deg, var(--orange), var(--gold));
      border-radius: 8px;
      display: flex; align-items: center; justify-content: center;
      font-size: 16px;
    }
    .nav { display: flex; gap: 8px; align-items: center; }
    .nav a {
      color: var(--text-dim); padding: 8px 16px; border-radius: 8px;
      font-size: 14px; font-weight: 500; transition: all .2s;
    }
    .nav a:hover { color: var(--text); background: var(--bg-card); }
    .nav a.active { color: var(--orange); }
    .nav-btn {
      background: var(--orange); color: #fff; padding: 8px 20px;
      border-radius: 8px; font-size: 14px; font-weight: 600; border: none; cursor: pointer;
      transition: transform .15s, box-shadow .15s;
    }
    .nav-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px var(--orange-glow); }

    /* ── User Menu & Auth Buttons ── */
    .auth-buttons { display: flex; gap: 8px; align-items: center; }
    .auth-buttons .nav-btn {
      background: transparent; color: var(--text-dim); padding: 8px 16px;
      border-radius: 8px; font-size: 14px; font-weight: 500; border: 1px solid var(--border);
      cursor: pointer; transition: all .2s;
    }
    .auth-buttons .nav-btn:hover { color: var(--text); border-color: var(--text-dim); }
    .auth-buttons .nav-btn-primary {
      background: var(--orange); color: #fff; border-color: var(--orange); font-weight: 600;
    }
    .auth-buttons .nav-btn-primary:hover { opacity: .9; transform: translateY(-1px); box-shadow: 0 4px 16px var(--orange-glow); }
    
    .user-menu { display: none; position: relative; }
    .user-menu.active { display: block; }
    .user-avatar {
      width: 36px; height: 36px; border-radius: 50%; cursor: pointer;
      overflow: hidden; border: 2px solid var(--border); transition: border-color .2s;
    }
    .user-avatar:hover { border-color: var(--orange); }
    .user-avatar img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
    
    .user-dropdown {
      position: absolute; top: 48px; right: 0;
      background: var(--bg-card); border: 1px solid var(--border);
      border-radius: 12px; padding: 8px; min-width: 220px;
      display: none; z-index: 1000;
      box-shadow: 0 8px 32px rgba(0,0,0,.4);
    }
    .user-dropdown.active { display: block; }
    .user-dropdown .user-info {
      padding: 12px; border-bottom: 1px solid var(--border); margin-bottom: 4px;
    }
    .user-dropdown .user-name { font-weight: 600; color: var(--text); font-size: 14px; }
    .user-dropdown .user-email { font-size: 12px; color: var(--text-dim); margin-top: 2px; }
    .user-dropdown .user-tier {
      display: inline-block; margin-top: 6px; padding: 2px 8px;
      border-radius: 4px; font-size: 11px; font-weight: 600;
      background: rgba(244,114,43,.12); color: var(--orange);
    }
    .user-dropdown .user-tier.pro { background: rgba(59,130,246,.12); color: var(--blue); }
    .user-dropdown .user-tier.enterprise { background: rgba(251,191,36,.12); color: var(--gold); }
    .user-dropdown a {
      display: flex; align-items: center; gap: 8px;
      padding: 10px 12px; color: var(--text-dim); text-decoration: none;
      border-radius: 8px; font-size: 14px; transition: all .15s;
    }
    .user-dropdown a:hover { background: var(--bg-card-hover); color: var(--text); }
    .user-dropdown a.logout { color: #ef4444; }
    .user-dropdown a.logout:hover { background: rgba(239,68,68,.1); }
    .user-dropdown .divider { height: 1px; background: var(--border); margin: 4px 0; }
    
    /* ── Modal form enhancements ── */
    .modal-switch {
      text-align: center; margin-top: 16px; font-size: 13px; color: var(--text-dim);
    }
    .modal-switch a { color: var(--orange); cursor: pointer; }
    .modal-switch a:hover { text-decoration: underline; }
    .modal-form { display: block; }
    .modal-form.hidden { display: none; }

  
    /* ── Page visibility ── */
    .page { display: none; }
    .page.active { display: block; }

    /* ── Loading spinner ── */
    .loading { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 40px; color: var(--text-dim); grid-column: 1 / -1; }
    .spinner { width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--orange); border-radius: 50%; animation: spin .6s linear infinite; }
    @keyframes spin { to { transform: rotate(360deg); } }