import { useState, useRef, useEffect } from 'react';
import { Link, useNavigate } from 'react-router-dom';
import { useAuthStore } from '../store/useAuthStore';
import './LandingPage.css';

const GITHUB_URL = 'https://github.com/davidmonterocrespo24/velxio';
const PAYPAL_URL = 'https://paypal.me/odoonext';
const GITHUB_SPONSORS_URL = 'https://github.com/sponsors/davidmonterocrespo24';

/* ── Icons ───────────────────────────────────────────── */
const IcoChip = () => (
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round">
    <rect x="5" y="5" width="14" height="14" rx="2" />
    <rect x="9" y="9" width="6" height="6" />
    <path d="M9 1v4M15 1v4M9 19v4M15 19v4M1 9h4M1 15h4M19 9h4M19 15h4" />
  </svg>
);

const IcoCpu = () => (
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round">
    <rect x="4" y="4" width="16" height="16" rx="2" />
    <rect x="8" y="8" width="8" height="8" />
    <path d="M10 2v2M14 2v2M10 20v2M14 20v2M2 10h2M2 14h2M20 10h2M20 14h2" />
  </svg>
);

const IcoCode = () => (
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round">
    <polyline points="16 18 22 12 16 6" />
    <polyline points="8 6 2 12 8 18" />
  </svg>
);

const IcoZap = () => (
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round">
    <polygon points="13 2 3 14 12 14 11 22 21 10 12 10 13 2" />
  </svg>
);

const IcoLayers = () => (
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round">
    <polygon points="12 2 2 7 12 12 22 7 12 2" />
    <polyline points="2 17 12 22 22 17" />
    <polyline points="2 12 12 17 22 12" />
  </svg>
);

const IcoMonitor = () => (
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round">
    <rect x="2" y="3" width="20" height="14" rx="2" />
    <line x1="8" y1="21" x2="16" y2="21" />
    <line x1="12" y1="17" x2="12" y2="21" />
  </svg>
);

const IcoBook = () => (
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round">
    <path d="M2 3h6a4 4 0 0 1 4 4v14a3 3 0 0 0-3-3H2z" />
    <path d="M22 3h-6a4 4 0 0 0-4 4v14a3 3 0 0 1 3-3h7z" />
  </svg>
);

const IcoGitHub = () => (
  <svg viewBox="0 0 24 24" fill="currentColor">
    <path d="M12 0C5.37 0 0 5.37 0 12c0 5.3 3.438 9.8 8.205 11.385.6.113.82-.258.82-.577 0-.285-.01-1.04-.015-2.04-3.338.724-4.042-1.61-4.042-1.61-.546-1.385-1.335-1.755-1.335-1.755-1.087-.744.084-.729.084-.729 1.205.084 1.838 1.236 1.838 1.236 1.07 1.835 2.809 1.305 3.495.998.108-.776.417-1.305.76-1.605-2.665-.3-5.466-1.332-5.466-5.93 0-1.31.465-2.38 1.235-3.22-.135-.303-.54-1.523.105-3.176 0 0 1.005-.322 3.3 1.23.96-.267 1.98-.399 3-.405 1.02.006 2.04.138 3 .405 2.28-1.552 3.285-1.23 3.285-1.23.645 1.653.24 2.873.12 3.176.765.84 1.23 1.91 1.23 3.22 0 4.61-2.805 5.625-5.475 5.92.42.36.81 1.096.81 2.22 0 1.606-.015 2.896-.015 3.286 0 .315.21.69.825.57C20.565 21.795 24 17.295 24 12c0-6.63-5.37-12-12-12z" />
  </svg>
);

/* ── Circuit Schematic SVG (hero illustration) ───────── */
const CircuitSchematic = () => (
  <svg viewBox="0 0 400 270" className="schematic-svg" aria-hidden="true">
    <defs>
      <pattern id="schgrid" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse">
        <circle cx="10" cy="10" r="0.65" fill="rgba(0,180,70,0.18)" />
      </pattern>
      <clipPath id="scope-clip">
        <rect x="290" y="200" width="100" height="60" />
      </clipPath>
    </defs>

    {/* PCB background */}
    <rect width="400" height="270" rx="4" fill="#040c06" />
    <rect width="400" height="270" rx="4" fill="url(#schgrid)" />
    {/* PCB edge cuts */}
    <rect x="1.5" y="1.5" width="397" height="267" rx="3.5" fill="none" stroke="#081808" strokeWidth="2" />

    {/* PCB corner marks */}
    <path d="M10,1.5 L1.5,1.5 L1.5,10" fill="none" stroke="#0d2a0d" strokeWidth="1" />
    <path d="M390,1.5 L398.5,1.5 L398.5,10" fill="none" stroke="#0d2a0d" strokeWidth="1" />
    <path d="M1.5,260 L1.5,268.5 L10,268.5" fill="none" stroke="#0d2a0d" strokeWidth="1" />
    <path d="M398.5,260 L398.5,268.5 L390,268.5" fill="none" stroke="#0d2a0d" strokeWidth="1" />

    {/* Silkscreen header */}
    <text x="12" y="14" fill="#092010" fontFamily="monospace" fontSize="6.5" letterSpacing="0.8">VELXIO BLINK DEMO</text>
    <text x="388" y="14" textAnchor="end" fill="#092010" fontFamily="monospace" fontSize="6.5" letterSpacing="0.5">REV 1.0</text>

    {/* ── ARDUINO UNO BLOCK ── */}
    <rect x="20" y="45" width="88" height="165" rx="3" fill="#001400" stroke="#003810" strokeWidth="1.5" />
    {/* MCU (ATmega328P) */}
    <rect x="32" y="80" width="64" height="70" rx="2" fill="#0a0a0a" stroke="#1a1a1a" strokeWidth="1" />
    {/* MCU pins (left side of chip) */}
    {[0,1,2,3,4].map((i) => (
      <rect key={`cl${i}`} x="28" y={85 + i * 12} width="4" height="3" rx="0.5" fill="#111" stroke="#222" strokeWidth="0.5" />
    ))}
    {/* MCU pins (right side of chip) */}
    {[0,1,2,3,4].map((i) => (
      <rect key={`cr${i}`} x="64" y={85 + i * 12} width="4" height="3" rx="0.5" fill="#111" stroke="#222" strokeWidth="0.5" />
    ))}
    {/* MCU label */}
    <text x="64" y="113" textAnchor="middle" fill="#252525" fontFamily="monospace" fontSize="6">ATmega</text>
    <text x="64" y="123" textAnchor="middle" fill="#252525" fontFamily="monospace" fontSize="6">328P</text>
    {/* Board ref */}
    <text x="64" y="62" textAnchor="middle" fill="#003a14" fontFamily="monospace" fontSize="7" fontWeight="bold">U1  ARDUINO UNO</text>
    {/* USB-B port (left edge) */}
    <rect x="9" y="90" width="13" height="22" rx="1.5" fill="#0f0f0f" stroke="#1a1a1a" strokeWidth="1" />
    <rect x="11" y="93" width="9" height="16" rx="1" fill="#090909" />
    {/* Status LED */}
    <circle cx="86" cy="57" r="3" fill="#00bb44" />
    <circle cx="86" cy="57" r="6" fill="rgba(0,180,60,0.08)" />
    {/* Reset button */}
    <rect x="38" y="48" width="10" height="10" rx="5" fill="#111" stroke="#1c1c1c" strokeWidth="1" />
    {/* Power connector */}
    <rect x="53" y="47" width="24" height="9" rx="1" fill="#111" stroke="#1a1a1a" strokeWidth="1" />
    {[0,1,2].map((i) => (
      <circle key={`pw${i}`} cx={57 + i * 8} cy="51.5" r="2" fill="#0a0a0a" stroke="#333" strokeWidth="0.5" />
    ))}
    {/* Header pins (bottom of board) */}
    {[0,1,2,3,4,5].map((i) => (
      <rect key={`ph${i}`} x={26 + i * 10} y="207" width="5" height="4" rx="0.5" fill="#a07a00" />
    ))}

    {/* ── ARDUINO RIGHT-SIDE PIN STUBS ── */}
    {/* 5V */}
    <line x1="108" y1="68" x2="118" y2="68" stroke="#003810" strokeWidth="1" />
    <text x="107" y="66" textAnchor="end" fill="#004018" fontFamily="monospace" fontSize="5.5">5V</text>
    {/* D13 */}
    <line x1="108" y1="108" x2="118" y2="108" stroke="#003810" strokeWidth="1" />
    <text x="107" y="106" textAnchor="end" fill="#004018" fontFamily="monospace" fontSize="5.5">D13</text>
    {/* GND */}
    <line x1="108" y1="178" x2="118" y2="178" stroke="#003810" strokeWidth="1" />
    <text x="107" y="176" textAnchor="end" fill="#004018" fontFamily="monospace" fontSize="5.5">GND</text>
    {/* TX */}
    <line x1="108" y1="143" x2="118" y2="143" stroke="#003810" strokeWidth="1" />
    <text x="107" y="141" textAnchor="end" fill="#004018" fontFamily="monospace" fontSize="5.5">TX</text>

    {/* ── POWER RAILS ── */}
    {/* VCC rail */}
    <line x1="118" y1="68" x2="365" y2="68" stroke="#880000" strokeWidth="1" strokeDasharray="6 3" opacity="0.55" />
    <text x="367" y="71" fill="#440000" fontFamily="monospace" fontSize="6">+5V</text>
    {/* GND rail */}
    <line x1="118" y1="178" x2="348" y2="178" stroke="#003388" strokeWidth="1" strokeDasharray="6 3" opacity="0.55" />
    {/* GND symbol */}
    <line x1="348" y1="178" x2="363" y2="178" stroke="#001a44" strokeWidth="1" />
    <line x1="356" y1="173" x2="356" y2="183" stroke="#001a44" strokeWidth="1.5" />
    <line x1="351" y1="185" x2="361" y2="185" stroke="#001a44" strokeWidth="1" />
    <line x1="353" y1="188" x2="359" y2="188" stroke="#001a44" strokeWidth="0.8" />

    {/* ── DECOUPLING CAPACITOR C1 ── */}
    {/* Wire from VCC rail */}
    <line x1="315" y1="68" x2="315" y2="100" stroke="#007acc" strokeWidth="1.2" />
    {/* Top plate */}
    <line x1="309" y1="100" x2="321" y2="100" stroke="#007acc" strokeWidth="1.5" />
    {/* Bottom plate */}
    <line x1="309" y1="106" x2="321" y2="106" stroke="#007acc" strokeWidth="1.5" />
    {/* Wire to GND rail */}
    <line x1="315" y1="106" x2="315" y2="178" stroke="#007acc" strokeWidth="1.2" />
    {/* Junction dots */}
    <circle cx="315" cy="68" r="3" fill="#007acc" />
    <circle cx="315" cy="178" r="3" fill="#007acc" />
    {/* C1 label */}
    <text x="325" y="101" fill="#003a55" fontFamily="monospace" fontSize="5.5">C1</text>
    <text x="325" y="109" fill="#003a55" fontFamily="monospace" fontSize="5.5">100nF</text>

    {/* ── D13 SIGNAL TRACE ── */}
    <line x1="118" y1="108" x2="152" y2="108" stroke="#00aa44" strokeWidth="1.5" />

    {/* ── RESISTOR R1 (IEC rectangle) ── */}
    {/* Left stub */}
    <line x1="152" y1="108" x2="162" y2="108" stroke="#00aa44" strokeWidth="1.5" />
    {/* Body */}
    <rect x="162" y="100" width="44" height="16" rx="1" fill="none" stroke="#00aa44" strokeWidth="1.5" />
    {/* Right stub */}
    <line x1="206" y1="108" x2="220" y2="108" stroke="#00aa44" strokeWidth="1.5" />
    {/* Labels */}
    <text x="184" y="97" textAnchor="middle" fill="#00661a" fontFamily="monospace" fontSize="5.5">R1</text>
    <text x="184" y="124" textAnchor="middle" fill="#00661a" fontFamily="monospace" fontSize="5.5">330 Ω</text>

    {/* ── LED D1 (IEC triangle + bar) ── */}
    {/* Trace R1 to anode */}
    <line x1="220" y1="108" x2="230" y2="108" stroke="#00aa44" strokeWidth="1.5" />
    {/* Triangle (pointing right) */}
    <polygon points="230,99 230,117 258,108" fill="rgba(0,255,100,0.08)" stroke="#00aa44" strokeWidth="1.5" />
    {/* Cathode bar */}
    <line x1="258" y1="99" x2="258" y2="117" stroke="#00aa44" strokeWidth="2" />
    {/* Trace cathode → right */}
    <line x1="258" y1="108" x2="280" y2="108" stroke="#00aa44" strokeWidth="1.5" />
    {/* LED glow */}
    <circle cx="244" cy="108" r="20" fill="rgba(0,255,90,0.04)" />
    {/* Light emission rays */}
    <line x1="264" y1="96" x2="272" y2="90" stroke="rgba(0,220,80,0.22)" strokeWidth="1" />
    <line x1="267" y1="108" x2="276" y2="108" stroke="rgba(0,220,80,0.22)" strokeWidth="1" />
    <line x1="264" y1="120" x2="272" y2="126" stroke="rgba(0,220,80,0.22)" strokeWidth="1" />
    {/* D1 label */}
    <text x="244" y="95" textAnchor="middle" fill="#00661a" fontFamily="monospace" fontSize="5.5">D1</text>
    <text x="244" y="126" textAnchor="middle" fill="#00661a" fontFamily="monospace" fontSize="5.5">GREEN</text>

    {/* ── TRACE: cathode → GND rail ── */}
    <line x1="280" y1="108" x2="280" y2="178" stroke="#00aa44" strokeWidth="1.5" />
    {/* Junction dot on GND rail */}
    <circle cx="280" cy="178" r="3.5" fill="#00aa44" />

    {/* ── OSCILLOSCOPE WINDOW ── */}
    <rect x="288" y="192" width="100" height="66" rx="2" fill="#000c03" stroke="#0a2010" strokeWidth="1" />
    {/* Scope header bg */}
    <rect x="288" y="192" width="100" height="14" rx="2" fill="#000" />
    <text x="291" y="202" fill="#005522" fontFamily="monospace" fontSize="5.5">CH1  D13</text>
    <text x="385" y="202" textAnchor="end" fill="#003314" fontFamily="monospace" fontSize="5.5">5V/div</text>
    {/* Scope grid lines */}
    <line x1="288" y1="218" x2="388" y2="218" stroke="#051405" strokeWidth="0.5" />
    <line x1="288" y1="234" x2="388" y2="234" stroke="#051405" strokeWidth="0.5" />
    <line x1="288" y1="250" x2="388" y2="250" stroke="#051405" strokeWidth="0.5" />
    <line x1="313" y1="206" x2="313" y2="258" stroke="#051405" strokeWidth="0.5" />
    <line x1="338" y1="206" x2="338" y2="258" stroke="#051405" strokeWidth="0.5" />
    <line x1="363" y1="206" x2="363" y2="258" stroke="#051405" strokeWidth="0.5" />
    {/* Square wave trace (clipped) */}
    <polyline
      clipPath="url(#scope-clip)"
      points="290,250 290,214 303,214 303,250 316,250 316,214 329,214 329,250 342,250 342,214 355,214 355,250 368,250 368,214 381,214 381,250 388,250"
      fill="none"
      stroke="#00dd55"
      strokeWidth="1.5"
      strokeLinejoin="miter"
    />
    <text x="291" y="258" fill="#003314" fontFamily="monospace" fontSize="5">1s/div</text>

    {/* ── TX trace decorative ── */}
    <line x1="118" y1="143" x2="148" y2="143" stroke="#007acc" strokeWidth="1" strokeDasharray="4 2" opacity="0.4" />
    <text x="152" y="146" fill="#003a55" fontFamily="monospace" fontSize="5.5">Serial TX →</text>

    {/* Bottom silkscreen */}
    <text x="12" y="263" fill="#092010" fontFamily="monospace" fontSize="6" letterSpacing="0.5">MIT LICENSE</text>
    <text x="388" y="263" textAnchor="end" fill="#092010" fontFamily="monospace" fontSize="6">velxio.dev</text>
  </svg>
);

/* ── Board SVGs ───────────────────────────────────────── */
const BoardUno = () => (
  <svg viewBox="0 0 120 80" className="board-svg">
    <rect x="2" y="2" width="116" height="76" rx="4" fill="#006633" stroke="#004d26" strokeWidth="1.5" />
    <rect x="42" y="22" width="36" height="36" rx="2" fill="#1a1a1a" stroke="#333" strokeWidth="1" />
    <rect x="0" y="28" width="14" height="24" rx="2" fill="#555" stroke="#444" strokeWidth="1" />
    <circle cx="108" cy="20" r="7" fill="#333" stroke="#222" strokeWidth="1" />
    {[0,1,2,3,4,5,6,7,8,9,11,12,13].map((i) => (
      <rect key={i} x={20 + i * 6.5} y="4" width="3" height="6" rx="0.5" fill="#d4a017" />
    ))}
    {[0,1,2,3,4,5].map((i) => (
      <rect key={i} x={40 + i * 8} y="70" width="3" height="6" rx="0.5" fill="#d4a017" />
    ))}
    <circle cx="90" cy="12" r="2.5" fill="#00ff88" opacity="0.9" />
    <text x="60" y="77" textAnchor="middle" fill="#00aa55" fontSize="5" fontFamily="monospace">Arduino Uno</text>
  </svg>
);

const BoardNano = () => (
  <svg viewBox="0 0 120 50" className="board-svg">
    <rect x="2" y="2" width="116" height="46" rx="3" fill="#003399" stroke="#002277" strokeWidth="1.5" />
    <rect x="44" y="12" width="24" height="24" rx="1.5" fill="#1a1a1a" stroke="#333" strokeWidth="1" />
    <rect x="50" y="0" width="20" height="8" rx="2" fill="#555" stroke="#444" strokeWidth="1" />
    {[0,1,2,3,4,5,6,7].map((i) => (
      <rect key={i} x="4" y={8 + i * 4.5} width="6" height="3" rx="0.5" fill="#d4a017" />
    ))}
    {[0,1,2,3,4,5,6,7].map((i) => (
      <rect key={i} x="110" y={8 + i * 4.5} width="6" height="3" rx="0.5" fill="#d4a017" />
    ))}
    <circle cx="28" cy="10" r="2" fill="#00ff88" opacity="0.9" />
    <text x="60" y="44" textAnchor="middle" fill="#6699ff" fontSize="5" fontFamily="monospace">Arduino Nano</text>
  </svg>
);

const BoardPico = () => (
  <svg viewBox="0 0 120 60" className="board-svg">
    <rect x="2" y="2" width="116" height="56" rx="3" fill="#f0f0f0" stroke="#ccc" strokeWidth="1.5" />
    <rect x="40" y="14" width="32" height="32" rx="2" fill="#1a1a1a" stroke="#333" strokeWidth="1" />
    <rect x="44" y="18" width="24" height="24" rx="1" fill="#222" stroke="#444" strokeWidth="0.5" />
    <rect x="50" y="0" width="20" height="8" rx="2" fill="#888" stroke="#666" strokeWidth="1" />
    {[0,1,2,3,4,5,6].map((i) => (
      <rect key={i} x="4" y={10 + i * 6} width="6" height="4" rx="0.5" fill="#888" />
    ))}
    {[0,1,2,3,4,5,6].map((i) => (
      <rect key={i} x="110" y={10 + i * 6} width="6" height="4" rx="0.5" fill="#888" />
    ))}
    <circle cx="88" cy="10" r="2.5" fill="#00ccff" opacity="0.9" />
    <text x="60" y="57" textAnchor="middle" fill="#555" fontSize="5" fontFamily="monospace">Raspberry Pi Pico</text>
  </svg>
);

const BoardMega = () => (
  <svg viewBox="0 0 160 80" className="board-svg">
    <rect x="2" y="2" width="156" height="76" rx="4" fill="#006633" stroke="#004d26" strokeWidth="1.5" />
    <rect x="55" y="20" width="50" height="40" rx="2" fill="#1a1a1a" stroke="#333" strokeWidth="1" />
    <rect x="0" y="28" width="14" height="24" rx="2" fill="#555" stroke="#444" strokeWidth="1" />
    <circle cx="148" cy="20" r="7" fill="#333" stroke="#222" strokeWidth="1" />
    {Array.from({length: 18}).map((_, i) => (
      <rect key={i} x={18 + i * 7} y="4" width="3" height="6" rx="0.5" fill="#d4a017" />
    ))}
    {Array.from({length: 18}).map((_, i) => (
      <rect key={i} x={18 + i * 7} y="70" width="3" height="6" rx="0.5" fill="#d4a017" />
    ))}
    <circle cx="130" cy="12" r="2.5" fill="#00ff88" opacity="0.9" />
    <circle cx="138" cy="12" r="2.5" fill="#ff6600" opacity="0.9" />
    <text x="80" y="77" textAnchor="middle" fill="#00aa55" fontSize="5" fontFamily="monospace">Arduino Mega 2560</text>
  </svg>
);

/* ── Features ─────────────────────────────────────────── */
const features = [
  { icon: <IcoCpu />,     title: 'Real AVR8 Emulation',   desc: 'Full ATmega328p at 16 MHz — timers, USART, ADC, SPI, I2C and PWM all wired.' },
  { icon: <IcoLayers />,  title: '48+ Components',         desc: 'LEDs, LCDs, TFT displays, servos, buzzers, sensors and more from wokwi-elements.' },
  { icon: <IcoCode />,    title: 'Monaco Editor',          desc: 'VS Code-grade C++ editor with syntax highlighting, autocomplete and minimap.' },
  { icon: <IcoZap />,     title: 'arduino-cli Backend',    desc: 'Compile sketches locally in seconds. No cloud. No latency. No limits.' },
  { icon: <IcoMonitor />, title: 'Serial Monitor',         desc: 'Live TX/RX with auto baud-rate detection, send data and autoscroll.' },
  { icon: <IcoBook />,    title: 'Library Manager',        desc: 'Browse and install the full Arduino library index directly from the UI.' },
];

/* ── Sponsor SVG icon ─────────────────────────────────── */
const IcoSponsor = () => (
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round">
    <circle cx="12" cy="12" r="10" />
    <path d="M12 6v6l4 2" />
    <path d="M8 14h.01M12 18h.01M16 14h.01" />
  </svg>
);

/* ── User nav dropdown ────────────────────────────────── */
const UserMenu: React.FC = () => {
  const user = useAuthStore((s) => s.user);
  const logout = useAuthStore((s) => s.logout);
  const navigate = useNavigate();
  const [open, setOpen] = useState(false);
  const ref = useRef<HTMLDivElement>(null);

  useEffect(() => {
    const handler = (e: MouseEvent) => {
      if (ref.current && !ref.current.contains(e.target as Node)) setOpen(false);
    };
    document.addEventListener('mousedown', handler);
    return () => document.removeEventListener('mousedown', handler);
  }, []);

  if (!user) return null;

  const initials = user.username[0].toUpperCase();

  return (
    <div className="user-menu" ref={ref}>
      <button className="user-menu-trigger" onClick={() => setOpen((v) => !v)}>
        {user.avatar_url ? (
          <img src={user.avatar_url} alt="" className="user-avatar" />
        ) : (
          <span className="user-avatar user-avatar-initials">{initials}</span>
        )}
        <span className="user-menu-name">{user.username}</span>
        <svg viewBox="0 0 16 16" fill="currentColor" width="10" height="10" style={{ opacity: 0.5 }}>
          <path d="M4 6l4 4 4-4" stroke="currentColor" strokeWidth="1.5" fill="none" strokeLinecap="round"/>
        </svg>
      </button>
      {open && (
        <div className="user-menu-dropdown">
          <div className="user-menu-header">
            {user.avatar_url ? (
              <img src={user.avatar_url} alt="" className="user-avatar user-avatar-lg" />
            ) : (
              <span className="user-avatar user-avatar-initials user-avatar-lg">{initials}</span>
            )}
            <div>
              <div className="user-menu-uname">{user.username}</div>
              <div className="user-menu-email">{user.email}</div>
            </div>
          </div>
          <div className="user-menu-divider" />
          <Link to="/editor" className="user-menu-item" onClick={() => setOpen(false)}>
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" width="15" height="15">
              <polyline points="16 18 22 12 16 6"/><polyline points="8 6 2 12 8 18"/>
            </svg>
            Open Editor
          </Link>
          <Link to={`/${user.username}`} className="user-menu-item" onClick={() => setOpen(false)}>
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" width="15" height="15">
              <path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/>
            </svg>
            My Projects
          </Link>
          <div className="user-menu-divider" />
          <button className="user-menu-item user-menu-signout" onClick={async () => { setOpen(false); await logout(); navigate('/'); }}>
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" width="15" height="15">
              <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4"/><polyline points="16 17 21 12 16 7"/><line x1="21" y1="12" x2="9" y2="12"/>
            </svg>
            Sign out
          </button>
        </div>
      )}
    </div>
  );
};

/* ── Component ────────────────────────────────────────── */
export const LandingPage: React.FC = () => {
  const user = useAuthStore((s) => s.user);
  const isLoading = useAuthStore((s) => s.isLoading);

  return (
    <div className="landing">
      {/* Nav */}
      <nav className="landing-nav">
        <div className="landing-nav-brand">
          <IcoChip />
          <span>Velxio</span>
        </div>
        <div className="landing-nav-links">
          <a href={GITHUB_URL} target="_blank" rel="noopener noreferrer" className="nav-link">
            <IcoGitHub /> GitHub
          </a>
          <Link to="/docs" className="nav-link">Docs</Link>
          <Link to="/examples" className="nav-link">Examples</Link>
          {isLoading ? (
            <div className="nav-auth-skeleton" />
          ) : user ? (
            <UserMenu />
          ) : (
            <>
              <Link to="/login" className="nav-link">Sign in</Link>
              <Link to="/editor" className="nav-btn-primary">Launch Editor</Link>
            </>
          )}
        </div>
      </nav>

      {/* Hero */}
      <section className="landing-hero">
        <div className="hero-left">
          <div className="hero-eyebrow">
            <span className="eyebrow-tag">OPEN SOURCE</span>
            <span className="eyebrow-dot" />
            <span className="eyebrow-tag">FREE</span>
            <span className="eyebrow-dot" />
            <span className="eyebrow-tag">LOCAL</span>
          </div>
          <h1 className="hero-title">
            Arduino Simulator<br />
            <span className="hero-accent">in your browser</span>
          </h1>
          <p className="hero-subtitle">
            Write, compile, and simulate Arduino projects with no hardware required.
            Real AVR8 emulation running entirely on your machine.
          </p>
          <div className="hero-ctas">
            <Link to="/editor" className="cta-primary">
              <IcoZap />
              Launch Editor
            </Link>
            <a href={GITHUB_URL} target="_blank" rel="noopener noreferrer" className="cta-secondary">
              <IcoGitHub />
              View on GitHub
            </a>
          </div>
          <div className="hero-specs">
            <span className="spec-pill">ATmega328p</span>
            <span className="spec-sep">/</span>
            <span className="spec-pill">RP2040</span>
            <span className="spec-sep">/</span>
            <span className="spec-pill">16 MHz</span>
            <span className="spec-sep">/</span>
            <span className="spec-pill">48+ components</span>
          </div>
        </div>
        <div className="hero-right">
          <CircuitSchematic />
        </div>
      </section>

      {/* Boards */}
      <section className="landing-section">
        <div className="section-header">
          <span className="section-label">// boards</span>
          <h2 className="section-title">Supported Hardware</h2>
          <p className="section-sub">Pick your target board. The emulator adapts its register map and timing.</p>
        </div>
        <div className="boards-grid">
          <div className="board-card">
            <BoardUno />
            <div className="board-info">
              <span className="board-name">Arduino Uno</span>
              <span className="board-chip">ATmega328p · AVR8 · 16 MHz</span>
            </div>
          </div>
          <div className="board-card">
            <BoardNano />
            <div className="board-info">
              <span className="board-name">Arduino Nano</span>
              <span className="board-chip">ATmega328p · AVR8 · 16 MHz</span>
            </div>
          </div>
          <div className="board-card">
            <BoardMega />
            <div className="board-info">
              <span className="board-name">Arduino Mega</span>
              <span className="board-chip">ATmega2560 · AVR8 · 16 MHz</span>
            </div>
          </div>
          <div className="board-card">
            <BoardPico />
            <div className="board-info">
              <span className="board-name">Raspberry Pi Pico</span>
              <span className="board-chip">RP2040 · Dual-core ARM · 133 MHz</span>
            </div>
          </div>
        </div>
      </section>

      {/* Features */}
      <section className="landing-section landing-section-alt">
        <div className="section-header">
          <span className="section-label">// features</span>
          <h2 className="section-title">Everything you need</h2>
          <p className="section-sub">A complete IDE and simulator, running locally with no external dependencies.</p>
        </div>
        <div className="features-grid">
          {features.map((f) => (
            <div key={f.title} className="feature-card">
              <div className="feature-icon">{f.icon}</div>
              <h3 className="feature-title">{f.title}</h3>
              <p className="feature-desc">{f.desc}</p>
            </div>
          ))}
        </div>
      </section>

      {/* Support */}
      <section className="landing-support">
        <div className="support-content">
          <div className="support-icon"><IcoSponsor /></div>
          <h2 className="support-title">Support the project</h2>
          <p className="support-sub">
            Velxio is free and open source. If it saves you time, consider supporting its development.
          </p>
          <div className="support-btns">
            <a href={GITHUB_SPONSORS_URL} target="_blank" rel="noopener noreferrer" className="support-btn support-btn-gh">
              <IcoGitHub /> GitHub Sponsors
            </a>
            <a href={PAYPAL_URL} target="_blank" rel="noopener noreferrer" className="support-btn support-btn-pp">
              <svg viewBox="0 0 24 24" fill="currentColor" width="16" height="16">
                <path d="M7.076 21.337H2.47a.641.641 0 0 1-.633-.74L4.944.901C5.026.382 5.474 0 5.998 0h7.46c2.57 0 4.578.543 5.69 1.81 1.01 1.15 1.304 2.42 1.012 4.287-.023.143-.047.288-.077.437-.983 5.05-4.349 6.797-8.647 6.797h-2.19c-.524 0-.968.382-1.05.9l-1.12 7.106zm14.146-14.42a3.35 3.35 0 0 0-.607-.541c-.013.076-.026.175-.041.254-.93 4.778-4.005 7.201-9.138 7.201h-2.19a.563.563 0 0 0-.556.479l-1.187 7.527h-.506l-.24 1.516a.56.56 0 0 0 .554.647h3.882c.46 0 .85-.334.922-.788.06-.26.76-4.852.816-5.09a.932.932 0 0 1 .923-.788h.58c3.76 0 6.705-1.528 7.565-5.946.36-1.847.174-3.388-.777-4.471z" />
              </svg>
              Donate via PayPal
            </a>
          </div>
        </div>
      </section>

      {/* Footer */}
      <footer className="landing-footer">
        <div className="footer-brand">
          <IcoChip />
          <span>Velxio</span>
        </div>
        <div className="footer-links">
          <a href={GITHUB_URL} target="_blank" rel="noopener noreferrer">GitHub</a>
          <Link to="/docs">Docs</Link>
          <Link to="/examples">Examples</Link>
          <Link to="/editor">Editor</Link>
        </div>
        <p className="footer-copy">
          MIT License · Powered by <a href="https://github.com/wokwi/avr8js" target="_blank" rel="noopener noreferrer">avr8js</a> &amp; <a href="https://github.com/wokwi/wokwi-elements" target="_blank" rel="noopener noreferrer">wokwi-elements</a>
        </p>
      </footer>
    </div>
  );
};
