"use client";

import { useState } from 'react';
import { 
  Search, 
  Tag,
  Loader2, 
  Copy, 
  PlaySquare, 
  Check, 
  Hash, 
  Users, 
  Sparkles, 
  CheckCircle2, 
  HelpCircle, 
  ArrowRight, 
  BarChart3, 
  Layers, 
  ShieldCheck, 
  Target, 
  Eye, 
  FileText, 
  Globe, 
  Code, 
  Rss, 
  Info 
} from 'lucide-react';
import Link from 'next/link';

export default function ChannelIdFinderPage() {
  const [url, setUrl] = useState('');
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState('');
  const [result, setResult] = useState<{ channel_id: string; channel_url: string; uploader: string; subscriber_count: number | null } | null>(null);
  const [copied, setCopied] = useState(false);

  const findId = async (e: React.FormEvent) => {
    e.preventDefault();
    if (!url) return;

    setLoading(true);
    setError('');
    setResult(null);
    setCopied(false);

    try {
      const res = await fetch(`/api/channel-id?url=${encodeURIComponent(url)}`);
      const data = await res.json();
      
      if (!res.ok) throw new Error(data.error || 'Failed to find Channel ID');
      
      setResult(data);
    } catch (err: any) {
      setError(err.message || 'An unexpected error occurred');
    } finally {
      setLoading(false);
    }
  };

  const copyId = () => {
    if (result?.channel_id) {
      navigator.clipboard.writeText(result.channel_id);
      setCopied(true);
      setTimeout(() => setCopied(false), 2000);
    }
  };

  const formatSubscribers = (count: number | null) => {
    if (count === null) return 'Hidden or Unknown';
    if (count >= 1000000) return `${(count / 1000000).toFixed(1)}M`;
    if (count >= 1000) return `${(count / 1000).toFixed(1)}K`;
    return count.toString();
  };

  const jsonLd = {
    "@context": "https://schema.org",
    "@graph": [
      {
        "@type": "WebApplication",
        "name": "YouTube Channel ID Finder",
        "url": "https://yttoolkits.site/channel-id-finder",
        "description": "Find the unique YouTube Channel ID (UC...) of any creator instantly. Works with channel URLs, custom @handles, and video links.",
        "applicationCategory": "DeveloperApplication",
        "operatingSystem": "All",
        "offers": {
          "@type": "Offer",
          "price": "0",
          "priceCurrency": "USD"
        }
      },
      {
        "@type": "BreadcrumbList",
        "itemListElement": [
          {
            "@type": "ListItem",
            "position": 1,
            "name": "Home",
            "item": "https://yttoolkits.site/"
          },
          {
            "@type": "ListItem",
            "position": 2,
            "name": "YouTube Channel ID Finder",
            "item": "https://yttoolkits.site/channel-id-finder"
          }
        ]
      },
      {
        "@type": "FAQPage",
        "mainEntity": [
          {
            "@type": "Question",
            "name": "What is a YouTube Channel ID?",
            "acceptedAnswer": {
              "@type": "Answer",
              "text": "A YouTube Channel ID is a unique, immutable 24-character alphanumeric string that always begins with 'UC'. It serves as the permanent database primary key for every YouTube channel, remaining unchanged even if the creator changes their handle, username, or channel title."
            }
          },
          {
            "@type": "Question",
            "name": "How can I find a YouTube Channel ID using a video link?",
            "acceptedAnswer": {
              "@type": "Answer",
              "text": "Simply copy any video link from the channel and paste it into our Channel ID Finder. Our system resolves the underlying uploader channel and extracts the official 'UC...' Channel ID automatically."
            }
          },
          {
            "@type": "Question",
            "name": "Can a YouTube Channel ID ever change?",
            "acceptedAnswer": {
              "@type": "Answer",
              "text": "No. Unlike channel display names, custom URLs, and @handles which can be updated repeatedly, the core YouTube Channel ID is generated upon channel creation and is permanent for the lifetime of the account."
            }
          },
          {
            "@type": "Question",
            "name": "Why do YouTube Channel IDs start with 'UC'?",
            "acceptedAnswer": {
              "@type": "Answer",
              "text": "'UC' stands for 'User Channel'. YouTube uses standardized two-letter prefixes to categorize database entities. For instance, playlists start with 'PL', uploads playlists start with 'UU', and channels start with 'UC'."
            }
          },
          {
            "@type": "Question",
            "name": "What is the difference between a YouTube Handle and a Channel ID?",
            "acceptedAnswer": {
              "@type": "Answer",
              "text": "A handle (e.g., @creator) is a user-chosen public alias designed for social tagging, comments, and readability. A Channel ID (e.g., UCX6OQ3DkcsbYNE6H8uQQuVA) is a system-level identifier required for API endpoints, RSS feeds, and developer integrations."
            }
          },
          {
            "@type": "Question",
            "name": "How do I create an RSS feed for a YouTube channel using its Channel ID?",
            "acceptedAnswer": {
              "@type": "Answer",
              "text": "Use the standard YouTube RSS format: 'https://www.youtube.com/feeds/videos.xml?channel_id=YOUR_CHANNEL_ID'. Replace YOUR_CHANNEL_ID with the 24-character UC ID extracted with our tool to receive instant XML video updates."
            }
          },
          {
            "@type": "Question",
            "name": "Why do developers need the Channel ID for the YouTube Data API?",
            "acceptedAnswer": {
              "@type": "Answer",
              "text": "The YouTube Data API v3 requires the exact 'id' parameter (UC...) to query channel statistics, list uploaded videos, manage community posts, or query live broadcasts efficiently without performing expensive search queries."
            }
          },
          {
            "@type": "Question",
            "name": "Can I find the Channel ID of my own channel?",
            "acceptedAnswer": {
              "@type": "Answer",
              "text": "Yes! You can either paste your channel handle into our tool, or navigate to YouTube Studio > Settings > Channel > Advanced Settings to view your User ID and Channel ID."
            }
          },
          {
            "@type": "Question",
            "name": "Does this tool support brand accounts and topic channels?",
            "acceptedAnswer": {
              "@type": "Answer",
              "text": "Yes. Our Channel ID Finder supports personal accounts, brand channels, YouTube Music topic channels, and auto-generated artist channels."
            }
          },
          {
            "@type": "Question",
            "name": "Is this YouTube Channel ID Finder free and safe to use?",
            "acceptedAnswer": {
              "@type": "Answer",
              "text": "Yes, our tool is 100% free with unlimited queries. It does not require Google login, API tokens, or personal account permissions."
            }
          }
        ]
      }
    ]
  };

  return (
    <>
      <script
        type="application/ld+json"
        dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }}
      />

      <div className="min-h-screen py-12 px-4 sm:px-6 lg:px-8">
        <div className="max-w-4xl mx-auto space-y-16">
          
          {/* Tool Section */}
          <section className="text-center space-y-8">
            <div className="space-y-4">
              <h1 className="text-3xl md:text-5xl font-extrabold text-zinc-100 flex items-center justify-center gap-4">
                <Hash className="w-10 h-10 text-red-500" />
                YouTube Channel ID Finder
              </h1>
              <p className="text-zinc-400 text-lg max-w-2xl mx-auto">
                Find the unique 24-character Channel ID of any YouTube creator instantly. Paste a channel URL, custom @handle, or any video link.
              </p>
            </div>

            <div className="bg-zinc-900/50 border border-zinc-800 rounded-3xl p-6 md:p-8 max-w-3xl mx-auto shadow-xl">
              <form onSubmit={findId} className="flex flex-col sm:flex-row gap-4">
                <div className="relative flex-grow">
                  <div className="absolute inset-y-0 left-0 pl-4 flex items-center pointer-events-none">
                    <PlaySquare className="h-5 w-5 text-zinc-500" />
                  </div>
                  <input
                    type="text"
                    placeholder="Paste Channel URL, @handle, or Video URL..."
                    value={url}
                    onChange={(e) => setUrl(e.target.value)}
                    className="w-full bg-zinc-950 border border-zinc-800 focus:border-red-500/50 focus:ring-2 focus:ring-red-500/20 rounded-2xl py-4 pl-12 pr-4 text-zinc-100 placeholder-zinc-500 outline-none transition-all"
                    required
                  />
                </div>
                <button
                  type="submit"
                  disabled={loading}
                  className="bg-red-600 hover:bg-red-700 disabled:bg-zinc-800 disabled:text-zinc-500 text-white px-8 py-4 rounded-2xl font-semibold flex items-center justify-center gap-2 transition-colors whitespace-nowrap min-w-[160px]"
                >
                  {loading ? (
                    <>
                      <Loader2 className="w-5 h-5 animate-spin" />
                      Searching
                    </>
                  ) : (
                    <>
                      <Search className="w-5 h-5" />
                      Find ID
                    </>
                  )}
                </button>
              </form>

              {error && (
                <div className="mt-6 p-4 bg-red-500/10 border border-red-500/20 rounded-2xl text-red-400 text-sm">
                  {error}
                </div>
              )}

              {result && (
                <div className="mt-8">
                  <div className="bg-zinc-950 border border-zinc-800 rounded-2xl p-6 text-left space-y-6">
                    
                    <div className="flex flex-col md:flex-row justify-between md:items-center gap-4">
                      <div>
                        <h2 className="text-2xl font-bold text-zinc-100">{result.uploader}</h2>
                        <div className="flex items-center gap-2 text-zinc-400 mt-1">
                          <Users className="w-4 h-4 text-zinc-400" />
                          <span>{formatSubscribers(result.subscriber_count)} subscribers</span>
                        </div>
                      </div>
                    </div>

                    <div className="space-y-2">
                      <label className="text-sm font-semibold text-zinc-400">Channel ID (Permanent UC-Key)</label>
                      <div className="flex items-center gap-2">
                        <code className="flex-1 bg-zinc-900 border border-zinc-800 p-4 rounded-xl text-zinc-100 font-mono text-sm break-all">
                          {result.channel_id}
                        </code>
                        <button
                          onClick={copyId}
                          className="bg-zinc-800 hover:bg-zinc-700 p-4 rounded-xl transition-colors shrink-0"
                          title="Copy ID"
                        >
                          {copied ? <Check className="w-5 h-5 text-green-500" /> : <Copy className="w-5 h-5 text-zinc-300" />}
                        </button>
                      </div>
                    </div>

                    {result.channel_url && (
                      <div className="space-y-2">
                        <label className="text-sm font-semibold text-zinc-400">Canonical Channel URL</label>
                        <div className="bg-zinc-900 border border-zinc-800 p-3 rounded-xl text-zinc-300 text-sm break-all font-mono">
                          {result.channel_url}
                        </div>
                      </div>
                    )}

                  </div>
                </div>
              )}
            </div>
          </section>

          {/* Massive SEO Content Section */}
          <article className="space-y-16">
            
            {/* H2: What is a YouTube Channel ID? */}
            <section className="space-y-6">
              <h2 className="text-3xl font-extrabold text-zinc-100 flex items-center gap-3">
                <Hash className="w-8 h-8 text-red-500 shrink-0" />
                What is a YouTube Channel ID?
              </h2>
              <div className="prose prose-invert max-w-none text-zinc-400 leading-relaxed space-y-4 text-base">
                <p>
                  A <strong>YouTube Channel ID</strong> is a globally unique, 24-character alphanumeric identifier assigned by Google to every channel created on YouTube. These IDs consistently begin with the two-letter prefix <code>UC</code> followed by 22 case-sensitive characters (for example, <code>UCq-Fj5jknLsUf-MWSy4_brA</code>). In database systems and software engineering terms, the Channel ID functions as the immutable primary key for an entity in YouTube's underlying infrastructure.
                </p>
                <p>
                  Over the years, YouTube has introduced multiple ways for users to reference their favorite channels—starting with legacy custom usernames (<code>youtube.com/user/username</code>), moving to vanity URLs (<code>youtube.com/c/channelname</code>), and recently adopting unified handles (<code>youtube.com/@handle</code>). While all of these public-facing aliases can be changed, transferred, or rebranded at any time by the channel owner, the underlying Channel ID never changes. It remains permanently tied to that channel from the moment of account creation until deletion.
                </p>
                <p>
                  Because handles and display names are mutable, software developers, marketing agencies, analytics platforms, and automation tools must use the permanent <code>UC...</code> identifier to guarantee that data queries, subscriber webhooks, and API calls always reach the intended channel without breaking when a creator changes their branding.
                </p>
              </div>
            </section>

            {/* H2: How to Find Any YouTube Channel ID - Step by Step Guide */}
            <section className="space-y-6">
              <h2 className="text-3xl font-extrabold text-zinc-100 flex items-center gap-3">
                <Search className="w-8 h-8 text-red-500 shrink-0" />
                How to Find Any YouTube Channel ID: Step-by-Step Guide
              </h2>
              <p className="text-zinc-400 leading-relaxed">
                Finding a Channel ID used to require inspecting messy HTML code or setting up a developer project in Google Cloud Console. With YTToolkits, you can extract any channel identifier in seconds using any URL format:
              </p>
              <div className="grid md:grid-cols-4 gap-6">
                <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl relative flex flex-col justify-between">
                  <div className="space-y-3">
                    <span className="w-10 h-10 rounded-2xl bg-red-600/10 border border-red-500/20 text-red-500 font-bold flex items-center justify-center text-lg">1</span>
                    <h3 className="text-lg font-bold text-zinc-100">Grab Any Link</h3>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      Copy the creator's channel URL (e.g., <code>youtube.com/@MrBeast</code>) or any single video link published by that channel.
                    </p>
                  </div>
                </div>

                <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl relative flex flex-col justify-between">
                  <div className="space-y-3">
                    <span className="w-10 h-10 rounded-2xl bg-red-600/10 border border-red-500/20 text-red-500 font-bold flex items-center justify-center text-lg">2</span>
                    <h3 className="text-lg font-bold text-zinc-100">Paste in Tool</h3>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      Paste the URL into the input field above. Our intelligent resolver automatically recognizes handles, video IDs, and custom links.
                    </p>
                  </div>
                </div>

                <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl relative flex flex-col justify-between">
                  <div className="space-y-3">
                    <span className="w-10 h-10 rounded-2xl bg-red-600/10 border border-red-500/20 text-red-500 font-bold flex items-center justify-center text-lg">3</span>
                    <h3 className="text-lg font-bold text-zinc-100">Click &quot;Find ID&quot;</h3>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      Click the search button. Our high-speed crawler retrieves the canonical metadata directly from YouTube's server headers.
                    </p>
                  </div>
                </div>

                <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl relative flex flex-col justify-between">
                  <div className="space-y-3">
                    <span className="w-10 h-10 rounded-2xl bg-red-600/10 border border-red-500/20 text-red-500 font-bold flex items-center justify-center text-lg">4</span>
                    <h3 className="text-lg font-bold text-zinc-100">Copy Channel ID</h3>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      Click the copy icon next to the 24-character UC ID. You can also view their subscriber count and permanent canonical URL.
                    </p>
                  </div>
                </div>
              </div>
            </section>

            {/* H2: Key Features of YTToolkits Channel ID Finder */}
            <section className="space-y-6">
              <h2 className="text-3xl font-extrabold text-zinc-100 flex items-center gap-3">
                <Sparkles className="w-8 h-8 text-red-500 shrink-0" />
                Key Features of YTToolkits YouTube Channel ID Finder
              </h2>
              <div className="grid md:grid-cols-3 gap-6">
                <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-3">
                  <div className="p-3 bg-red-500/10 w-fit rounded-xl border border-red-500/20 text-red-400">
                    <Globe className="w-6 h-6" />
                  </div>
                  <h3 className="text-xl font-bold text-zinc-100">Universal URL Support</h3>
                  <p className="text-zinc-400 text-sm leading-relaxed">
                    Accepts any valid YouTube link: standard URLs, @handle vanity paths, legacy user URLs, mobile share links, and individual video watch URLs.
                  </p>
                </div>

                <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-3">
                  <div className="p-3 bg-blue-500/10 w-fit rounded-xl border border-blue-500/20 text-blue-400">
                    <Code className="w-6 h-6" />
                  </div>
                  <h3 className="text-xl font-bold text-zinc-100">Developer-Ready Output</h3>
                  <p className="text-zinc-400 text-sm leading-relaxed">
                    Provides clean, unformatted 24-character strings ready for immediate insertion into Google Cloud YouTube Data API v3 parameters.
                  </p>
                </div>

                <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-3">
                  <div className="p-3 bg-green-500/10 w-fit rounded-xl border border-green-500/20 text-green-400">
                    <Users className="w-6 h-6" />
                  </div>
                  <h3 className="text-xl font-bold text-zinc-100">Live Channel Telemetry</h3>
                  <p className="text-zinc-400 text-sm leading-relaxed">
                    Instantly verifies the channel name and estimated subscriber count so you can be 100% confident you have targeted the correct creator.
                  </p>
                </div>

                <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-3">
                  <div className="p-3 bg-yellow-500/10 w-fit rounded-xl border border-yellow-500/20 text-yellow-400">
                    <Rss className="w-6 h-6" />
                  </div>
                  <h3 className="text-xl font-bold text-zinc-100">Instant RSS Feed Generation</h3>
                  <p className="text-zinc-400 text-sm leading-relaxed">
                    Use the extracted UC ID to subscribe to YouTube video updates inside feed readers like Feedly or Discord notification bots without API keys.
                  </p>
                </div>

                <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-3">
                  <div className="p-3 bg-purple-500/10 w-fit rounded-xl border border-purple-500/20 text-purple-400">
                    <ShieldCheck className="w-6 h-6" />
                  </div>
                  <h3 className="text-xl font-bold text-zinc-100">Zero Login or Cloud Quota</h3>
                  <p className="text-zinc-400 text-sm leading-relaxed">
                    No need to sign into Google or burn your personal Google Developer API quota units. Our backend resolves channel identities independently.
                  </p>
                </div>

                <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-3">
                  <div className="p-3 bg-cyan-500/10 w-fit rounded-xl border border-cyan-500/20 text-cyan-400">
                    <Copy className="w-6 h-6" />
                  </div>
                  <h3 className="text-xl font-bold text-zinc-100">One-Click Copy & Clipboard</h3>
                  <p className="text-zinc-400 text-sm leading-relaxed">
                    Features integrated visual clipboard confirmation for swift data entry during high-volume influencer marketing audits and research.
                  </p>
                </div>
              </div>
            </section>

            {/* H2: Why Choose YTToolkits YouTube Channel ID Finder? */}
            <section className="space-y-6">
              <h2 className="text-3xl font-extrabold text-zinc-100 flex items-center gap-3">
                <CheckCircle2 className="w-8 h-8 text-green-500 shrink-0" />
                Why Choose YTToolkits YouTube Channel ID Finder?
              </h2>
              <p className="text-zinc-400 leading-relaxed">
                Whether you are a developer integrating a YouTube widget, an agency building a roster of creators, or a viewer configuring an RSS aggregator, retrieving a Channel ID should not require technical headaches. Below is a comparison of YTToolkits versus manual inspection and Google API setups:
              </p>

              <div className="bg-zinc-900/50 border border-zinc-800 rounded-3xl overflow-hidden p-6 md:p-8">
                <h3 className="text-xl font-bold text-zinc-100 mb-6">Comparison: YTToolkits vs. Manual Search vs. Google Cloud API</h3>
                <div className="overflow-x-auto">
                  <table className="w-full text-left text-sm text-zinc-300">
                    <thead className="border-b border-zinc-800 text-zinc-100 font-semibold bg-zinc-950/50">
                      <tr>
                        <th className="p-4">Criteria</th>
                        <th className="p-4 text-green-400">YTToolkits Finder</th>
                        <th className="p-4 text-zinc-400">View Page Source</th>
                        <th className="p-4 text-zinc-400">YouTube Data API v3</th>
                      </tr>
                    </thead>
                    <tbody className="divide-y divide-zinc-800/50">
                      <tr>
                        <td className="p-4 font-medium text-zinc-200">Ease of Use</td>
                        <td className="p-4 text-green-400 font-bold">Paste & 1-Click</td>
                        <td className="p-4 text-zinc-400">Complex Ctrl+F search</td>
                        <td className="p-4 text-zinc-400">Requires coding & auth</td>
                      </tr>
                      <tr>
                        <td className="p-4 font-medium text-zinc-200">Setup Required</td>
                        <td className="p-4 text-green-400 font-bold">None (Immediate)</td>
                        <td className="p-4 text-zinc-400">Desktop browser needed</td>
                        <td className="p-4 text-zinc-400">Google Cloud project & API keys</td>
                      </tr>
                      <tr>
                        <td className="p-4 font-medium text-zinc-200">Handles Video URLs</td>
                        <td className="p-4 text-green-400 font-bold">Yes, resolves owner</td>
                        <td className="p-4 text-zinc-400">Confusing multiple IDs</td>
                        <td className="p-4 text-zinc-400">Requires 2 separate calls</td>
                      </tr>
                      <tr>
                        <td className="p-4 font-medium text-zinc-200">Mobile Compatibility</td>
                        <td className="p-4 text-green-400 font-bold">100% Mobile Ready</td>
                        <td className="p-4 text-zinc-400">Cannot inspect on phone</td>
                        <td className="p-4 text-zinc-400">API testing difficult</td>
                      </tr>
                      <tr>
                        <td className="p-4 font-medium text-zinc-200">API Quota Cost</td>
                        <td className="p-4 text-green-400 font-bold">Zero Units Burned</td>
                        <td className="p-4 text-zinc-400">Zero</td>
                        <td className="p-4 text-zinc-400">100 units per search call</td>
                      </tr>
                    </tbody>
                  </table>
                </div>
              </div>
            </section>

            {/* H2: Understanding YouTube Identity Architecture */}
            <section className="space-y-6">
              <h2 className="text-3xl font-extrabold text-zinc-100 flex items-center gap-3">
                <Code className="w-8 h-8 text-red-500 shrink-0" />
                Understanding YouTube Identity Architecture: UC IDs vs Handles vs Vanity URLs
              </h2>
              <div className="prose prose-invert max-w-none text-zinc-400 leading-relaxed space-y-4">
                <p>
                  To understand why Channel IDs are so vital, one must examine the evolution of YouTube's URL architecture over the past two decades. YouTube has transitioned through four distinct identity models:
                </p>
                <div className="grid md:grid-cols-2 gap-6 pt-2">
                  <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-2">
                    <h3 className="text-lg font-bold text-zinc-100 flex items-center gap-2">
                      <span className="w-3 h-3 rounded-full bg-red-500"></span>
                      1. Legacy Usernames (2005–2014)
                    </h3>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      In YouTube's early days, channels had simple username URLs like <code>youtube.com/user/creatorname</code>. When Google unified YouTube accounts with Google+, legacy usernames were deprecated. Today, many older channels still possess a legacy username, but newer channels never received one.
                    </p>
                  </div>

                  <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-2">
                    <h3 className="text-lg font-bold text-zinc-100 flex items-center gap-2">
                      <span className="w-3 h-3 rounded-full bg-orange-500"></span>
                      2. Custom Vanity URLs (2014–2022)
                    </h3>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      Channels that reached 100 subscribers could claim custom vanity URLs formatted as <code>youtube.com/c/CreatorName</code>. These URLs were static display shortcuts, but they caused massive confusion when creators rebranded or when multiple channels wanted the same name.
                    </p>
                  </div>

                  <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-2">
                    <h3 className="text-lg font-bold text-zinc-100 flex items-center gap-2">
                      <span className="w-3 h-3 rounded-full bg-yellow-500"></span>
                      3. Modern Handles (2022–Present)
                    </h3>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      YouTube introduced global handles like <code>@username</code> to provide distinct social identification across Shorts, video comments, and community mentions. However, creators can change their handle every 14 days, making handles dangerous as permanent database references.
                    </p>
                  </div>

                  <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-2">
                    <h3 className="text-lg font-bold text-zinc-100 flex items-center gap-2">
                      <span className="w-3 h-3 rounded-full bg-green-500"></span>
                      4. The Permanent UC ID (All Time)
                    </h3>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      Throughout all these interface shifts, the underlying 24-character <code>UC...</code> Channel ID has never changed. YouTube's canonical routing always resolves <code>youtube.com/channel/UC[ID]</code> directly to the owner's page, regardless of past or future branding updates.
                    </p>
                  </div>
                </div>
              </div>
            </section>

            {/* H2: Developer & Marketer Guide */}
            <section className="space-y-6">
              <h2 className="text-3xl font-extrabold text-zinc-100 flex items-center gap-3">
                <Rss className="w-8 h-8 text-red-500 shrink-0" />
                Developer & Marketer Guide: YouTube API, RSS Feeds, and Automation
              </h2>
              <div className="prose prose-invert max-w-none text-zinc-400 leading-relaxed space-y-4">
                <p>
                  Acquiring a channel's permanent UC ID unlocks a host of powerful programmatic capabilities that are not possible with handles or vanity URLs alone:
                </p>
                <div className="space-y-4 pt-2">
                  <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-3">
                    <h3 className="text-lg font-bold text-zinc-100 flex items-center gap-2">
                      <Rss className="w-5 h-5 text-yellow-500" />
                      Free YouTube RSS Feeds Without API Quotas
                    </h3>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      Did you know that every YouTube channel has a built-in XML RSS feed? You do not need to register for an API key or pay for subscription services. Simply take the Channel ID and append it to YouTube's RSS endpoint:
                    </p>
                    <code className="block p-3 bg-zinc-950 border border-zinc-800 rounded-xl text-xs text-yellow-400 font-mono break-all">
                      https://www.youtube.com/feeds/videos.xml?channel_id=UCX6OQ3DkcsbYNE6H8uQQuVA
                    </code>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      Paste this URL into RSS readers (Feedly, Inoreader, NetNewsWire), Discord webhook bots, or Zapier automations to receive instant notifications whenever a creator publishes a new upload or Short.
                    </p>
                  </div>

                  <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-3">
                    <h3 className="text-lg font-bold text-zinc-100 flex items-center gap-2">
                      <Code className="w-5 h-5 text-blue-500" />
                      Cost-Efficient YouTube Data API v3 Queries
                    </h3>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      When querying the Google YouTube Data API, searching by handle via the <code>search.list</code> endpoint costs an exorbitant <strong>100 quota units</strong> per request. In contrast, querying directly by Channel ID using the <code>channels.list</code> endpoint costs only <strong>1 quota unit</strong>. By using our Channel ID Finder to pre-resolve channel handles to UC IDs, developers save 99% of their daily API budget.
                    </p>
                  </div>

                  <div className="bg-zinc-900/50 border border-zinc-800 p-6 rounded-3xl space-y-3">
                    <h3 className="text-lg font-bold text-zinc-100 flex items-center gap-2">
                      <BarChart3 className="w-5 h-5 text-green-500" />
                      Influencer Marketing Tracking & CRM Sync
                    </h3>
                    <p className="text-zinc-400 text-sm leading-relaxed">
                      When brands manage influencer partnerships, tracking creators by their mutable handle causes broken links and duplicate records in HubSpot or Salesforce when creators update their names. Storing the creator's immutable Channel ID ensures flawless long-term performance tracking across multi-month campaigns. Check channel monetization alongside the ID using our <Link href="/monetization-checker" className="text-red-400 hover:underline">YouTube Monetization Checker</Link>.
                    </p>
                  </div>
                </div>
              </div>
            </section>

            {/* H2: Channel Analytics & Competitive Auditing */}
            <section className="space-y-6">
              <h2 className="text-3xl font-extrabold text-zinc-100 flex items-center gap-3">
                <BarChart3 className="w-8 h-8 text-red-500 shrink-0" />
                Channel Analytics & Competitive Auditing Using Unique Channel IDs
              </h2>
              <div className="prose prose-invert max-w-none text-zinc-400 leading-relaxed space-y-4">
                <p>
                  When performing competitor analysis or channel audits, professional creators track metrics beyond public vanity statistics. Knowing a channel's permanent ID lets you cross-reference historical performance data across third-party analytics repositories like Social Blade, Viewstats, and Tubular Labs.
                </p>
                <p>
                  Furthermore, YouTube assigns each channel a hidden &quot;Uploads Playlist ID&quot;. If you take any Channel ID starting with <code>UC</code> and replace the second letter <code>C</code> with a <code>U</code> (turning <code>UC...</code> into <code>UU...</code>), you obtain the direct playlist ID containing every video the creator has ever published in chronological order! You can inspect upload timestamps using our <Link href="/upload-date-finder" className="text-red-400 hover:underline">Upload Date Finder</Link> to analyze posting velocity.
                </p>
              </div>
            </section>

            {/* H2: Frequently Asked Questions */}
            <section className="space-y-8">
              <h2 className="text-3xl font-extrabold text-zinc-100 flex items-center gap-3">
                <HelpCircle className="w-8 h-8 text-red-500 shrink-0" />
                Frequently Asked Questions About YouTube Channel IDs
              </h2>
              <div className="grid gap-4 md:grid-cols-2">
                {[
                  {
                    q: "What is a YouTube Channel ID?",
                    a: "A YouTube Channel ID is a unique, immutable 24-character alphanumeric string that always begins with 'UC'. It serves as the permanent database primary key for every YouTube channel, remaining unchanged even if the creator changes their handle, username, or channel title."
                  },
                  {
                    q: "How can I find a YouTube Channel ID using a video link?",
                    a: "Simply copy any video link from the channel and paste it into our Channel ID Finder. Our system resolves the underlying uploader channel and extracts the official 'UC...' Channel ID automatically."
                  },
                  {
                    q: "Can a YouTube Channel ID ever change?",
                    a: "No. Unlike channel display names, custom URLs, and @handles which can be updated repeatedly, the core YouTube Channel ID is generated upon channel creation and is permanent for the lifetime of the account."
                  },
                  {
                    q: "Why do YouTube Channel IDs start with 'UC'?",
                    a: "'UC' stands for 'User Channel'. YouTube uses standardized two-letter prefixes to categorize database entities. For instance, playlists start with 'PL', uploads playlists start with 'UU', and channels start with 'UC'."
                  },
                  {
                    q: "What is the difference between a YouTube Handle and a Channel ID?",
                    a: "A handle (e.g., @creator) is a user-chosen public alias designed for social tagging, comments, and readability. A Channel ID (e.g., UCX6OQ3DkcsbYNE6H8uQQuVA) is a system-level identifier required for API endpoints, RSS feeds, and developer integrations."
                  },
                  {
                    q: "How do I create an RSS feed for a YouTube channel using its Channel ID?",
                    a: "Use the standard YouTube RSS format: 'https://www.youtube.com/feeds/videos.xml?channel_id=YOUR_CHANNEL_ID'. Replace YOUR_CHANNEL_ID with the 24-character UC ID extracted with our tool to receive instant XML video updates."
                  },
                  {
                    q: "Why do developers need the Channel ID for the YouTube Data API?",
                    a: "The YouTube Data API v3 requires the exact 'id' parameter (UC...) to query channel statistics, list uploaded videos, manage community posts, or query live broadcasts efficiently without performing expensive search queries."
                  },
                  {
                    q: "Can I find the Channel ID of my own channel?",
                    a: "Yes! You can either paste your channel handle into our tool, or navigate to YouTube Studio > Settings > Channel > Advanced Settings to view your User ID and Channel ID."
                  },
                  {
                    q: "Does this tool support brand accounts and topic channels?",
                    a: "Yes. Our Channel ID Finder supports personal accounts, brand channels, YouTube Music topic channels, and auto-generated artist channels."
                  },
                  {
                    q: "Is this YouTube Channel ID Finder free and safe to use?",
                    a: "Yes, our tool is 100% free with unlimited queries. It does not require Google login, API tokens, or personal account permissions."
                  }
                ].map((faq, i) => (
                  <div key={i} className="bg-zinc-900/40 border border-zinc-800 p-6 rounded-2xl flex flex-col justify-start">
                    <h3 className="font-bold text-zinc-100 mb-2 flex items-start gap-2 text-base">
                      <Info className="w-5 h-5 text-red-500 shrink-0 mt-0.5" />
                      <span>{faq.q}</span>
                    </h3>
                    <p className="text-zinc-400 text-sm leading-relaxed pl-7">{faq.a}</p>
                  </div>
                ))}
              </div>
            </section>

            {/* H2: Related YouTube Creator & SEO Tools */}
            <section className="space-y-6 bg-zinc-900/50 p-8 rounded-3xl border border-zinc-800">
              <h2 className="text-3xl font-extrabold text-zinc-100 flex items-center gap-3">
                <Layers className="w-8 h-8 text-red-500 shrink-0" />
                Related YouTube Creator & SEO Tools
              </h2>
              <p className="text-zinc-400 text-base">
                Explore our full suite of free video optimization tools to research competitors, inspect channel health, and enhance your creative workflow:
              </p>
              <div className="grid md:grid-cols-3 gap-4 mt-6">
                <Link href="/tag-extractor" className="block p-5 rounded-2xl border border-zinc-800 bg-zinc-950/60 hover:bg-zinc-900 hover:border-red-500/40 transition-all group">
                  <div className="flex items-center justify-between mb-2">
                    <Tag className="w-6 h-6 text-red-500" />
                    <ArrowRight className="w-4 h-4 text-zinc-500 group-hover:text-red-400 group-hover:translate-x-1 transition-all" />
                  </div>
                  <h3 className="text-zinc-100 font-bold mb-1">Tag Extractor</h3>
                  <p className="text-zinc-400 text-xs leading-relaxed">
                    Extract hidden SEO tags and keyword clusters from top-ranking competitor videos.
                  </p>
                </Link>

                <Link href="/monetization-checker" className="block p-5 rounded-2xl border border-zinc-800 bg-zinc-950/60 hover:bg-zinc-900 hover:border-red-500/40 transition-all group">
                  <div className="flex items-center justify-between mb-2">
                    <BarChart3 className="w-6 h-6 text-green-500" />
                    <ArrowRight className="w-4 h-4 text-zinc-500 group-hover:text-green-400 group-hover:translate-x-1 transition-all" />
                  </div>
                  <h3 className="text-zinc-100 font-bold mb-1">Monetization Checker</h3>
                  <p className="text-zinc-400 text-xs leading-relaxed">
                    Check if any channel is approved for the YouTube Partner Program and generating ad revenue.
                  </p>
                </Link>

                <Link href="/description-viewer" className="block p-5 rounded-2xl border border-zinc-800 bg-zinc-950/60 hover:bg-zinc-900 hover:border-red-500/40 transition-all group">
                  <div className="flex items-center justify-between mb-2">
                    <FileText className="w-6 h-6 text-blue-500" />
                    <ArrowRight className="w-4 h-4 text-zinc-500 group-hover:text-blue-400 group-hover:translate-x-1 transition-all" />
                  </div>
                  <h3 className="text-zinc-100 font-bold mb-1">Description Viewer</h3>
                  <p className="text-zinc-400 text-xs leading-relaxed">
                    View raw descriptions, parsed links, hashtags, and affiliate disclosures cleanly.
                  </p>
                </Link>

                <Link href="/upload-date-finder" className="block p-5 rounded-2xl border border-zinc-800 bg-zinc-950/60 hover:bg-zinc-900 hover:border-red-500/40 transition-all group">
                  <div className="flex items-center justify-between mb-2">
                    <Eye className="w-6 h-6 text-purple-500" />
                    <ArrowRight className="w-4 h-4 text-zinc-500 group-hover:text-purple-400 group-hover:translate-x-1 transition-all" />
                  </div>
                  <h3 className="text-zinc-100 font-bold mb-1">Upload Date Finder</h3>
                  <p className="text-zinc-400 text-xs leading-relaxed">
                    Discover exact publishing dates, time-since-upload metrics, and scheduling habits.
                  </p>
                </Link>

                <Link href="/thumbnail-downloader" className="block p-5 rounded-2xl border border-zinc-800 bg-zinc-950/60 hover:bg-zinc-900 hover:border-red-500/40 transition-all group">
                  <div className="flex items-center justify-between mb-2">
                    <PlaySquare className="w-6 h-6 text-yellow-500" />
                    <ArrowRight className="w-4 h-4 text-zinc-500 group-hover:text-yellow-400 group-hover:translate-x-1 transition-all" />
                  </div>
                  <h3 className="text-zinc-100 font-bold mb-1">Thumbnail Downloader</h3>
                  <p className="text-zinc-400 text-xs leading-relaxed">
                    Download full HD and 4K YouTube thumbnails in original maximum resolution.
                  </p>
                </Link>

                <Link href="/video-downloader" className="block p-5 rounded-2xl border border-zinc-800 bg-zinc-950/60 hover:bg-zinc-900 hover:border-red-500/40 transition-all group">
                  <div className="flex items-center justify-between mb-2">
                    <PlaySquare className="w-6 h-6 text-red-500" />
                    <ArrowRight className="w-4 h-4 text-zinc-500 group-hover:text-red-400 group-hover:translate-x-1 transition-all" />
                  </div>
                  <h3 className="text-zinc-100 font-bold mb-1">Video Downloader</h3>
                  <p className="text-zinc-400 text-xs leading-relaxed">
                    Download high-quality MP4 video files safely for offline editing and research.
                  </p>
                </Link>
              </div>
            </section>

          </article>
        </div>
      </div>
    </>
  );
}