import { useEffect } from "react";
import { stylesTokens } from "../theme";
import { applyTheme } from "../themes";



export function useHpGlobalStyles() {
  // Google Fonts
  useEffect(() => {
    if (document.getElementById("hp-fonts")) return;

    const pre1 = document.createElement("link");
    pre1.id = "hp-fonts-pre1";
    pre1.rel = "preconnect";
    pre1.href = "https://fonts.googleapis.com";

    const pre2 = document.createElement("link");
    pre2.id = "hp-fonts-pre2";
    pre2.rel = "preconnect";
    pre2.href = "https://fonts.gstatic.com";
    pre2.crossOrigin = "anonymous";

    const link = document.createElement("link");
    link.id = "hp-fonts";
    link.rel = "stylesheet";
    link.href =
      "https://fonts.googleapis.com/css2?family=Cinzel+Decorative:wght@700;900&family=IM+Fell+English:ital,wght@0,400;0,700;1,400&display=swap";

    document.head.appendChild(pre1);
    document.head.appendChild(pre2);
    document.head.appendChild(link);
  }, []);

  // Keyframes
  useEffect(() => {
    if (document.getElementById("hp-anim-style")) return;
    const style = document.createElement("style");
    style.id = "hp-anim-style";
    style.innerHTML = `
      @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
      @keyframes popIn { from { opacity: 0; transform: translateY(8px) scale(0.985); } to { opacity: 1; transform: translateY(0) scale(1); } }
      @keyframes rowPulse { 0%{ transform: scale(1); } 50%{ transform: scale(1.01); } 100%{ transform: scale(1); } }
      @keyframes candleGlow {
        0%   { opacity: .55; transform: translateY(0px) scale(1); filter: blur(16px); }
        35%  { opacity: .85; transform: translateY(-2px) scale(1.02); filter: blur(18px); }
        70%  { opacity: .62; transform: translateY(1px) scale(1.01); filter: blur(17px); }
        100% { opacity: .55; transform: translateY(0px) scale(1); filter: blur(16px); }
      }
    `;
    document.head.appendChild(style);
  }, []);

  // html/body reset
  useEffect(() => {
    document.documentElement.style.height = "100%";
    document.body.style.height = "100%";
    document.documentElement.style.margin = "0";
    document.body.style.margin = "0";
    document.documentElement.style.padding = "0";
    document.body.style.padding = "0";
  }, []);

  // Global CSS
  useEffect(() => {
    if (document.getElementById("hp-global-style")) return;
    const style = document.createElement("style");
    style.id = "hp-global-style";
    style.innerHTML = `
      html, body {
        overscroll-behavior-y: none;
        -webkit-text-size-adjust: 100%;
        text-rendering: optimizeLegibility;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        background: ${stylesTokens.pageBg};
        color: ${stylesTokens.textMain};
      }
      body {
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
      }
      #root { background: transparent; }
      * { -webkit-tap-highlight-color: transparent; }
      button, input, select { font-family: inherit; }
      button { transition: transform 140ms ease, filter 140ms ease, border-color 140ms ease, background 140ms ease; }
      button:not(:disabled):hover { filter: brightness(1.12); transform: translateY(-1px); }
      button:not(:disabled):active { transform: translateY(0); filter: brightness(0.98); }
      button:disabled { cursor: not-allowed; opacity: 0.55; }
      input:focus, select:focus { border-color: var(--hp-textGold) !important; box-shadow: 0 0 0 3px color-mix(in srgb, var(--hp-textGold) 16%, transparent); }
      .hp-row { transition: background 140ms ease, transform 140ms ease, box-shadow 140ms ease; }
      .hp-row:hover { box-shadow: inset 0 0 0 1px rgba(233,216,166,0.12); }
      .hp-start-overlay { position: fixed; inset: 0; z-index: 2147483646; display: grid; place-items: center; padding: 20px; background: radial-gradient(circle at center, rgba(233,216,166,0.12), rgba(4,4,7,0.88) 48%, rgba(0,0,0,0.96)); animation: hpStartFade 260ms ease-out; }
      .hp-start-card { position: relative; width: min(420px, 100%); padding: 30px 22px 24px; border: 1px solid rgba(233,216,166,0.34); border-radius: 24px; text-align: center; background: linear-gradient(145deg, rgba(34,31,38,0.96), rgba(10,10,14,0.96)); box-shadow: 0 24px 90px rgba(0,0,0,0.72), 0 0 60px rgba(233,216,166,0.12); animation: hpStartCard 520ms cubic-bezier(.2,.8,.2,1); overflow: hidden; }
      .hp-start-card::before, .hp-start-card::after { content: ""; position: absolute; left: 12%; right: 12%; height: 1px; background: linear-gradient(90deg, transparent, rgba(233,216,166,0.72), transparent); animation: hpStartLine 1.8s ease-in-out infinite; }
      .hp-start-card::before { top: 12px; }
      .hp-start-card::after { bottom: 12px; animation-delay: .45s; }
      .hp-start-rune { color: var(--hp-textGold); font-size: 32px; line-height: 1; animation: hpStartRune 1.4s ease-in-out infinite; }
      .hp-start-kicker { margin-top: 14px; color: var(--hp-textDim); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; }
      .hp-start-title { margin-top: 8px; color: var(--hp-textGold); font-family: "Cinzel Decorative", "IM Fell English", system-ui; font-size: 25px; font-weight: 900; }
      .hp-start-subtitle { margin-top: 8px; color: var(--hp-textMain); font-size: 15px; }
      .hp-start-card button { border: 1px solid rgba(233,216,166,0.26); border-radius: 12px; background: rgba(233,216,166,0.10); padding: 10px 16px; font-weight: 900; cursor: pointer; }
      @keyframes hpStartFade { from { opacity: 0; } to { opacity: 1; } }
      @keyframes hpStartCard { from { opacity: 0; transform: translateY(18px) scale(.92) rotateX(8deg); } to { opacity: 1; transform: translateY(0) scale(1) rotateX(0); } }
      @keyframes hpStartRune { 0%, 100% { transform: rotate(0) scale(1); opacity: .7; } 50% { transform: rotate(180deg) scale(1.22); opacity: 1; } }
      @keyframes hpStartLine { 0%, 100% { opacity: .3; transform: scaleX(.7); } 50% { opacity: 1; transform: scaleX(1); } }
      .hp-topbar-actions { margin-left: auto; }
      .hp-user-menu-wrap { min-width: 0; }
      .hp-admin-user-row { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.5fr) 70px 76px 150px; }
      .hp-admin-action { min-width: 0; }
      .hp-admin-actions { display: flex; align-items: center; justify-content: flex-end; gap: 6px; min-width: 0; }
      .hp-admin-check { display: flex; align-items: center; gap: 8px; color: var(--hp-textDim); font-size: 13px; }
      .hp-admin-check input { width: 18px; height: 18px; accent-color: var(--hp-textGold); }
      .hp-admin-role { padding: 4px 8px; border-radius: 999px; background: rgba(233,216,166,0.10); border: 1px solid rgba(233,216,166,0.16); font-size: 12px; }
      .hp-admin-status { color: #baf3c9 !important; font-size: 13px; }
      .hp-admin-status--disabled { color: #ffb3b3 !important; }
      @media (max-width: 600px) {
        .hp-shell { padding: calc(12px + env(safe-area-inset-top)) 10px calc(28px + env(safe-area-inset-bottom)) !important; }
        .hp-topbar { align-items: center !important; padding: 10px !important; gap: 6px !important; flex-wrap: nowrap !important; }
        .hp-topbar > div:first-child { min-width: 0; flex: 1; }
        .hp-topbar > div:first-child > div:last-child { max-width: 105px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 11px !important; }
        .hp-topbar-actions { width: auto; flex: 0 0 auto; margin-left: 0; gap: 5px !important; }
        .hp-user-menu-wrap { flex: 0 0 auto; min-width: 0; }
        .hp-topbar-user, .hp-topbar-new { flex: 0 0 auto; min-height: 40px; width: auto; padding: 8px 9px !important; font-size: 13px; }
        .hp-topbar-user { justify-content: center; }
        .hp-user-dropdown { left: 50% !important; right: auto !important; transform: translateX(-50%); width: max-content; max-width: calc(100vw - 20px); min-width: min(220px, calc(100vw - 20px)) !important; }
        .hp-user-dropdown > div:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
        .hp-admin-user-row { grid-template-columns: minmax(0, 1fr) auto; gap: 4px 10px; padding: 11px !important; border-radius: 15px !important; }
        .hp-admin-name { grid-column: 1; grid-row: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 16px; }
        .hp-admin-email { grid-column: 1; grid-row: 2; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px !important; }
        .hp-admin-role { grid-column: 2; grid-row: 1; }
        .hp-admin-status { grid-column: 2; grid-row: 2; }
        .hp-admin-actions { grid-column: 1 / -1; grid-row: 3; width: 100%; justify-content: flex-end; }
        .hp-admin-actions .hp-admin-action { width: auto; min-width: 0; min-height: 38px; padding: 7px 10px !important; }
        .hp-row { grid-template-columns: minmax(0, 1fr) 42px 62px !important; gap: 7px !important; padding: 12px 11px !important; }
        .hp-row button { min-height: 40px; }
        button { min-height: 42px; }
        input, select { min-height: 44px; box-sizing: border-box; }
        .hp-topbar + * { margin-top: 12px !important; }
      }
      @media (max-width: 360px) {
        .hp-row { grid-template-columns: minmax(0, 1fr) 38px 56px !important; font-size: 14px; }
        .hp-topbar { gap: 5px !important; }
        .hp-topbar-user, .hp-topbar-new { padding-left: 7px !important; padding-right: 7px !important; font-size: 12px; }
      }
    `;
    document.head.appendChild(style);
  }, []);

  // Ensure a theme is applied once (fallback)
  useEffect(() => {
    applyTheme("default");
  }, []);
}