import { useState, useEffect, useRef, useMemo } from 'react';
import { useAuthStore } from '../../../stores/authStore';
import { useUIStore } from '../../../stores/uiStore';
import { useInstanceStore } from '../../../stores/instanceStore';
import { useSpaceStore } from '../../../stores/spaceStore';
import { Avatar } from '../../ui/Avatar';
import { ImageCropModal } from '../../ui/ImageCropModal';
import { GifPicker } from '../../chat/GifPicker';
import { DeleteAccountModal } from '../DeleteAccountModal';
import { api } from '../../../api/client';
import { useTransferStore } from '../../../stores/transferStore';
import { waitForTransferAttachment } from '../../../utils/waitForTransfer';
import { getAvatarGradient, adjustColor, mutedGradient, AVATAR_GRADIENT_MAP, BANNER_COLOR_PRESETS } from '../../../utils/gradients';
import { AVATAR_COLORS } from '@backspace/shared';
import type { User, UserStatus, AvatarColor } from '@backspace/shared';
import type { FederationOpResult } from '../../../utils/federationOps';
/**
 * Banner/avatar previews hold either a `blob:` object URL (local upload) or a
 * remote `https:` URL (GIF picker). Only the former owns memory that must be
 * released — calling revokeObjectURL on a remote URL is a silent no-op that
 * would quietly hide a mistake here.
 */
function releasePreview(url: string | null): void {
  if (url && url.startsWith('blob:')) URL.revokeObjectURL(url);
}

export function AccountPanel() {
  const user = useAuthStore((s) => s.user);
  const updateProfile = useAuthStore((s) => s.updateProfile);

  const [displayName, setDisplayName] = useState(user?.displayName ?? '');
  const [customStatus, setCustomStatus] = useState(user?.customStatus ?? '');
  const [status, setStatus] = useState<UserStatus>(user?.status ?? 'online');
  const [bio, setBio] = useState(user?.bio ?? '');
  const [accentColor, setAccentColor] = useState<string | null>(user?.accentColor ?? null);
  const [avatarColorState, setAvatarColorState] = useState<AvatarColor | null>(user?.avatarColor ?? null);
  const [customHex, setCustomHex] = useState(user?.accentColor ?? '');

  // Avatar upload state
  const [avatarPreview, setAvatarPreview] = useState<string | null>(null);
  const [avatarFilename, setAvatarFilename] = useState<string | null>(null);
  const [uploadingAvatar, setUploadingAvatar] = useState(false);
  const [avatarCropSrc, setAvatarCropSrc] = useState<string | null>(null);
  const avatarInputRef = useRef<HTMLInputElement>(null);

  // Banner upload state
  const [bannerPreview, setBannerPreview] = useState<string | null>(null);
  const [bannerFilename, setBannerFilename] = useState<string | null>(null);
  const [uploadingBanner, setUploadingBanner] = useState(false);
  const [bannerCropSrc, setBannerCropSrc] = useState<string | null>(null);
  const [showBannerGif, setShowBannerGif] = useState(false);
  const bannerInputRef = useRef<HTMLInputElement>(null);

  const addToast = useUIStore((s) => s.addToast);
  const [error, setError] = useState('');
  const [isLoading, setIsLoading] = useState(false);

  useEffect(() => {
    if (user) {
      setDisplayName(user.displayName ?? '');
      setCustomStatus(user.customStatus ?? '');
      setStatus(user.status ?? 'online');
      setBio(user.bio ?? '');
      setAccentColor(user.accentColor ?? null);
      setAvatarColorState(user.avatarColor ?? null);
      setCustomHex(user.accentColor ?? '');
      // Reset upload state
      if (avatarPreview) URL.revokeObjectURL(avatarPreview);
      releasePreview(bannerPreview);
      setAvatarPreview(null);
      setAvatarFilename(null);
      setBannerPreview(null);
      setBannerFilename(null);
    }
  }, [user?.displayName, user?.customStatus, user?.status, user?.bio, user?.accentColor, user?.avatarColor, user?.avatar, user?.banner]);

  // Password change state
  const [currentPassword, setCurrentPassword] = useState('');
  const [newPassword, setNewPassword] = useState('');
  const [confirmNewPassword, setConfirmNewPassword] = useState('');
  const [passwordError, setPasswordError] = useState('');
  const [passwordLoading, setPasswordLoading] = useState(false);
  const [passwordResults, setPasswordResults] = useState<FederationOpResult[] | null>(null);
  const [showCurrentPassword, setShowCurrentPassword] = useState(false);
  const [showNewPassword, setShowNewPassword] = useState(false);

  // Delete account state
  const [showDeleteModal, setShowDeleteModal] = useState(false);

  const instances = useInstanceStore((s) => s.instances);
  const changePassword = useAuthStore((s) => s.changePassword);

  // ── Detached-account re-attach (fallback path, re-attach spec §3.4) ──
  // Explicit action shown only when this client also holds an active connection
  // to the account's home domain. Two-step armed confirm names both identities
  // before minting the proof. The primary/automatic path lives in instanceStore.
  const [reattachArmed, setReattachArmed] = useState(false);
  const [reattaching, setReattaching] = useState(false);
  const [reattachError, setReattachError] = useState<string | null>(null);

  const homeConnection = useMemo(() => {
    if (!user?.homeInstance) return null;
    const homeDomain = user.homeInstance.replace(/^https?:\/\//, '').replace(/\/+$/, '').toLowerCase();
    return instances.find(
      (i) => i.status === 'connected'
        // Portless hostname — must agree with the server's extractDomain
        // (new URL(origin).hostname) so a ported home instance still matches.
        && new URL(i.origin).hostname.toLowerCase() === homeDomain,
    ) ?? null;
  }, [instances, user?.homeInstance]);

  const handleReattach = async () => {
    if (!homeConnection) return;
    if (!reattachArmed) {
      setReattachArmed(true);
      return;
    }
    setReattaching(true);
    setReattachError(null);
    try {
      // Target domain = THIS instance (where the detached account lives).
      // Portless hostname to match the server's extractDomain contract.
      const { token } = await homeConnection.api.auth.attachProof(window.location.hostname);
      const res = await api.users.reattach({ token });
      useAuthStore.getState().setUser(res.user);
      // Re-attach reconciled this (home) account's 1-on-1 DM federatedIds on the
      // server; refetch the home DM list so the split conversation collapses
      // without a reload.
      try { await useSpaceStore.getState().reloadDmsForOrigin(''); } catch { /* non-fatal */ }
      addToast(`Account re-linked with ${homeConnection.username}`, 'success', 3000);
    } catch (err) {
      setReattachError(err instanceof Error ? err.message : 'Re-attach failed');
    } finally {
      setReattaching(false);
      setReattachArmed(false);
    }
  };

  if (!user) return null;

  const effectiveDisplayName = displayName.trim() || user.username;
  const effectiveAccent = accentColor;
  const effectiveAvatarColor = avatarColorState;

  // Change detection
  const hasChanges =
    displayName !== (user.displayName ?? '') ||
    customStatus !== (user.customStatus ?? '') ||
    status !== (user.status ?? 'online') ||
    bio !== (user.bio ?? '') ||
    accentColor !== (user.accentColor ?? null) ||
    avatarColorState !== (user.avatarColor ?? null) ||
    avatarFilename !== null ||
    bannerFilename !== null;

  // Compute banner display
  const currentBannerUrl = user.banner
    ? (user.banner.startsWith('http') ? user.banner : api.uploads.url(user.banner))
    : null;
  const displayBannerSrc = bannerPreview ?? (bannerFilename === '' ? null : currentBannerUrl);

  // Compute avatar display
  const currentAvatarSrc = user.avatar
    ? (user.avatar.startsWith('http') ? user.avatar : api.uploads.url(user.avatar))
    : null;
  const displayAvatarSrc = avatarPreview ?? (avatarFilename === '' ? null : currentAvatarSrc);

  // Banner fallback: accent gradient or avatar gradient (alpha baked into gradient colors)
  const bannerFallback = effectiveAccent
    ? mutedGradient(effectiveAccent, adjustColor(effectiveAccent, -40))
    : (() => {
        const g = getAvatarGradient(user.homeUserId ?? user.id, effectiveDisplayName, effectiveAvatarColor);
        return mutedGradient(g.from, g.to);
      })();

  // ── File selection handlers ──
  const handleAvatarSelect = (e: React.ChangeEvent<HTMLInputElement>) => {
    const file = e.target.files?.[0];
    if (!file) return;
    const reader = new FileReader();
    reader.onload = () => setAvatarCropSrc(reader.result as string);
    reader.readAsDataURL(file);
    if (avatarInputRef.current) avatarInputRef.current.value = '';
  };

  const handleBannerSelect = (e: React.ChangeEvent<HTMLInputElement>) => {
    const file = e.target.files?.[0];
    if (!file) return;
    const reader = new FileReader();
    reader.onload = () => setBannerCropSrc(reader.result as string);
    reader.readAsDataURL(file);
    if (bannerInputRef.current) bannerInputRef.current.value = '';
  };

  // ── Crop complete handlers ──
  const handleAvatarCropComplete = async (blob: Blob) => {
    if (avatarPreview) URL.revokeObjectURL(avatarPreview);
    const previewUrl = URL.createObjectURL(blob);
    setAvatarPreview(previewUrl);
    setAvatarCropSrc(null);
    const file = new File([blob], 'avatar.webp', { type: blob.type || 'image/webp' });
    setUploadingAvatar(true);
    try {
      const tid = await useTransferStore.getState().startUpload(file, { tray: false });
      const { filename } = await waitForTransferAttachment(tid);
      setAvatarFilename(filename);
    } catch {
      setError('Failed to upload avatar');
      setAvatarPreview(null);
      URL.revokeObjectURL(previewUrl);
    } finally {
      setUploadingAvatar(false);
    }
  };

  const handleBannerCropComplete = async (blob: Blob) => {
    releasePreview(bannerPreview);
    const previewUrl = URL.createObjectURL(blob);
    setBannerPreview(previewUrl);
    setBannerCropSrc(null);
    const file = new File([blob], 'banner.webp', { type: blob.type || 'image/webp' });
    setUploadingBanner(true);
    try {
      const tid = await useTransferStore.getState().startUpload(file, { tray: false });
      const { filename } = await waitForTransferAttachment(tid);
      setBannerFilename(filename);
    } catch {
      setError('Failed to upload banner');
      setBannerPreview(null);
      URL.revokeObjectURL(previewUrl);
    } finally {
      setUploadingBanner(false);
    }
  };

  const handleRemoveAvatar = () => {
    if (avatarPreview) URL.revokeObjectURL(avatarPreview);
    setAvatarPreview(null);
    setAvatarFilename('');
  };

  /**
   * Banners accept absolute URLs end to end: the server's isValidAssetUrl
   * allows http(s), and the profile render already branches on
   * `banner.startsWith('http')`. So a picked GIF needs no upload — the remote
   * URL is stored directly.
   */
  const handleBannerGifSelect = (url: string) => {
    releasePreview(bannerPreview);
    setBannerPreview(url);
    setBannerFilename(url);
    setShowBannerGif(false);
  };

  const handleRemoveBanner = () => {
    releasePreview(bannerPreview);
    setBannerPreview(null);
    setBannerFilename('');
  };

  const handleSave = async () => {
    setError('');
    setIsLoading(true);
    try {
      const updates: Record<string, string | undefined> = {};
      if (displayName !== (user.displayName ?? '')) updates.displayName = displayName.trim();
      if (customStatus !== (user.customStatus ?? '')) updates.customStatus = customStatus.trim();
      if (status !== (user.status ?? 'online')) updates.status = status;
      if (bio !== (user.bio ?? '')) updates.bio = bio.trim();
      if (accentColor !== (user.accentColor ?? null)) updates.accentColor = accentColor ?? '';
      if (avatarColorState !== (user.avatarColor ?? null)) updates.avatarColor = avatarColorState ?? '';
      if (avatarFilename !== null) updates.avatar = avatarFilename;
      if (bannerFilename !== null) updates.banner = bannerFilename;

      await updateProfile(updates as Parameters<typeof updateProfile>[0]);
      addToast('Profile updated', 'success', 2000);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Failed to update profile');
    } finally {
      setIsLoading(false);
    }
  };

  const handleChangePassword = async () => {
    setPasswordError('');
    setPasswordResults(null);

    if (newPassword.length < 8) {
      setPasswordError('New password must be at least 8 characters');
      return;
    }
    if (newPassword !== confirmNewPassword) {
      setPasswordError('Passwords do not match');
      return;
    }

    setPasswordLoading(true);
    try {
      const results = await changePassword(currentPassword, newPassword);
      addToast('Password changed', 'success', 2000);
      setCurrentPassword('');
      setNewPassword('');
      setConfirmNewPassword('');

      if (results.length > 0) {
        setPasswordResults(results);
      }

      setTimeout(() => {
        setPasswordResults(null);
      }, 5000);
    } catch (err) {
      setPasswordError(err instanceof Error ? err.message : 'Failed to change password');
    } finally {
      setPasswordLoading(false);
    }
  };

  const handleReset = () => {
    setDisplayName(user.displayName ?? '');
    setCustomStatus(user.customStatus ?? '');
    setStatus(user.status ?? 'online');
    setBio(user.bio ?? '');
    setAccentColor(user.accentColor ?? null);
    setAvatarColorState(user.avatarColor ?? null);
    setCustomHex(user.accentColor ?? '');
    if (avatarPreview) URL.revokeObjectURL(avatarPreview);
    releasePreview(bannerPreview);
    setAvatarPreview(null);
    setAvatarFilename(null);
    setBannerPreview(null);
    setBannerFilename(null);
    setError('');
  };

  return (
    <div className="space-y-5">
      <h2 className="text-lg font-semibold text-txt-primary mb-6">My Account</h2>
      {user?.federationHomeOrphaned && user?.homeInstance && (
        <div className="rounded-lg bg-accent-amber/10 border border-accent-amber/25 px-3.5 py-3 text-xs text-txt-secondary leading-relaxed mb-4">
          <span className="font-medium text-txt-primary">This account is detached from its home instance.</span>{' '}
          {user.homeInstance} was reset or is no longer available, so this account now operates locally on
          this instance — your profile and password are managed here.
          {homeConnection && (
            <>
              {' '}As <span className="font-medium text-txt-primary">{homeConnection.username}</span> on{' '}
              {user.homeInstance}, you can re-link this account — profile and presence will sync from there again.
              <button
                type="button"
                onClick={handleReattach}
                disabled={reattaching}
                className="mt-2 block rounded-md bg-accent-amber/20 hover:bg-accent-amber/30 disabled:opacity-50 text-txt-primary px-3 py-1.5 text-xs font-medium transition-colors"
              >
                {reattaching
                  ? 'Re-attaching…'
                  : reattachArmed
                    ? `Confirm re-attach as ${homeConnection.username}`
                    : `Re-attach to ${user.homeInstance}`}
              </button>
              {reattachError && <div className="mt-1.5 text-accent-rose">{reattachError}</div>}
            </>
          )}
        </div>
      )}
      {/* ── Profile Customization ── */}
      <div>
        <div className="text-[11px] font-semibold text-txt-tertiary uppercase tracking-wider mb-1.5">
          Profile Customization
        </div>

        {/* Live Preview Card */}
        <div className="rounded-lg overflow-hidden border border-white/[0.06] mb-4 bg-surface-channel">
          {/* Banner area */}
          <div
            className="h-[80px]"
            style={displayBannerSrc
              ? { backgroundImage: `url(${displayBannerSrc})`, backgroundSize: 'cover', backgroundPosition: 'center' }
              : { background: bannerFallback }
            }
          />
          {/* Avatar + info */}
          <div className="px-4 pb-3">
            <Avatar
              src={avatarPreview ?? (avatarFilename === '' ? null : user.avatar)}
              name={effectiveDisplayName}
              size={56}
              userId={user.homeUserId ?? user.id}
              user={{ ...user, avatarColor: effectiveAvatarColor } as User}
              ring={{ width: 4, color: 'var(--color-surface-channel, #1e1e2a)' }}
              className="mt-[-32px] mb-2"
            />
            <div
              className="font-semibold text-[15px] leading-tight text-txt-primary"
            >
              {effectiveDisplayName}
            </div>
            <div className="text-[12px] text-txt-tertiary">@{user.username}</div>
            {bio.trim() && (
              <div className="text-[12px] text-txt-secondary mt-1.5 whitespace-pre-wrap break-words line-clamp-3">
                {bio.trim()}
              </div>
            )}
          </div>
        </div>

        {/* Upload controls */}
        <div className="rounded-lg bg-white/[0.03] border border-white/[0.04] p-3.5 space-y-4">
          {/* Avatar upload */}
          <div>
            <label className="block text-xs text-txt-secondary mb-1.5">Avatar</label>
            <div className="flex items-center gap-3">
              <button
                type="button"
                onClick={() => avatarInputRef.current?.click()}
                disabled={uploadingAvatar}
                className="relative group"
              >
                <div className="w-[64px] h-[64px] rounded-full overflow-hidden">
                  {displayAvatarSrc ? (
                    <img src={displayAvatarSrc} alt="Avatar" className="w-full h-full object-cover" />
                  ) : (
                    <Avatar
                      src={null}
                      name={effectiveDisplayName}
                      size={64}
                      userId={user.homeUserId ?? user.id}
                      user={{ ...user, avatarColor: effectiveAvatarColor } as User}
                    />
                  )}
                </div>
                <div className="absolute inset-0 rounded-full bg-black/50 flex items-center justify-center opacity-0 group-hover:opacity-100 transition-opacity">
                  <svg className="w-5 h-5 text-white" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
                    <path strokeLinecap="round" strokeLinejoin="round" d="M3 9a2 2 0 012-2h.93a2 2 0 001.664-.89l.812-1.22A2 2 0 0110.07 4h3.86a2 2 0 011.664.89l.812 1.22A2 2 0 0018.07 7H19a2 2 0 012 2v9a2 2 0 01-2 2H5a2 2 0 01-2-2V9z" />
                    <path strokeLinecap="round" strokeLinejoin="round" d="M15 13a3 3 0 11-6 0 3 3 0 016 0z" />
                  </svg>
                </div>
                {uploadingAvatar && (
                  <div className="absolute inset-0 rounded-full bg-black/60 flex items-center justify-center">
                    <svg className="animate-spin w-5 h-5 text-white" viewBox="0 0 24 24" fill="none">
                      <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
                      <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4z" />
                    </svg>
                  </div>
                )}
              </button>
              <div className="flex flex-col gap-1">
                <button
                  type="button"
                  onClick={() => avatarInputRef.current?.click()}
                  disabled={uploadingAvatar}
                  className="text-xs text-accent-primary hover:underline text-left"
                >
                  Change Avatar
                </button>
                {(displayAvatarSrc || user.avatar) && avatarFilename !== '' && (
                  <button
                    type="button"
                    onClick={handleRemoveAvatar}
                    className="text-xs text-txt-danger hover:underline text-left"
                  >
                    Remove
                  </button>
                )}
              </div>
            </div>
            <input
              ref={avatarInputRef}
              type="file"
              accept="image/*"
              onChange={handleAvatarSelect}
              className="hidden"
            />
          </div>

          {/* Banner upload */}
          <div>
            <label className="block text-xs text-txt-secondary mb-1.5">Banner</label>
            <button
              type="button"
              onClick={() => bannerInputRef.current?.click()}
              disabled={uploadingBanner}
              className="relative group w-full h-[72px] rounded-lg overflow-hidden border border-white/[0.06]"
            >
              <div
                className="w-full h-full"
                style={displayBannerSrc
                  ? { backgroundImage: `url(${displayBannerSrc})`, backgroundSize: 'cover', backgroundPosition: 'center' }
                  : { background: mutedGradient(
                      effectiveAccent ?? getAvatarGradient(user.homeUserId ?? user.id, effectiveDisplayName, effectiveAvatarColor).from,
                      effectiveAccent ? adjustColor(effectiveAccent, -40) : getAvatarGradient(user.homeUserId ?? user.id, effectiveDisplayName, effectiveAvatarColor).to,
                      0.5
                    ) }
                }
              />
              <div className="absolute inset-0 bg-black/40 flex items-center justify-center opacity-0 group-hover:opacity-100 transition-opacity">
                <svg className="w-5 h-5 text-white" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
                  <path strokeLinecap="round" strokeLinejoin="round" d="M3 9a2 2 0 012-2h.93a2 2 0 001.664-.89l.812-1.22A2 2 0 0110.07 4h3.86a2 2 0 011.664.89l.812 1.22A2 2 0 0018.07 7H19a2 2 0 012 2v9a2 2 0 01-2 2H5a2 2 0 01-2-2V9z" />
                  <path strokeLinecap="round" strokeLinejoin="round" d="M15 13a3 3 0 11-6 0 3 3 0 016 0z" />
                </svg>
              </div>
              {uploadingBanner && (
                <div className="absolute inset-0 bg-black/60 flex items-center justify-center">
                  <svg className="animate-spin w-5 h-5 text-white" viewBox="0 0 24 24" fill="none">
                    <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
                    <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4z" />
                  </svg>
                </div>
              )}
            </button>
            <div className="relative flex gap-2 mt-1">
              <button
                type="button"
                onClick={() => bannerInputRef.current?.click()}
                disabled={uploadingBanner}
                className="text-xs text-accent-primary hover:underline"
              >
                Change Banner
              </button>
              <button
                type="button"
                onClick={() => setShowBannerGif((v) => !v)}
                disabled={uploadingBanner}
                className="text-xs text-accent-primary hover:underline"
              >
                Choose GIF
              </button>
              {showBannerGif && (
                <>
                  {/* Click-away layer, below the panel but above the page */}
                  <div className="fixed inset-0 z-[290]" onClick={() => setShowBannerGif(false)} />
                  <div className="absolute left-0 top-full mt-2 z-[300] glass rounded-xl overflow-hidden">
                    <GifPicker onGifSelect={handleBannerGifSelect} />
                  </div>
                </>
              )}
              {(displayBannerSrc || user.banner) && bannerFilename !== '' && (
                <button
                  type="button"
                  onClick={handleRemoveBanner}
                  className="text-xs text-txt-danger hover:underline"
                >
                  Remove
                </button>
              )}
            </div>
            <input
              ref={bannerInputRef}
              type="file"
              accept="image/*"
              onChange={handleBannerSelect}
              className="hidden"
            />
          </div>

          {/* Avatar Color */}
          <div>
            <label className="block text-xs text-txt-secondary mb-1.5">Avatar Color</label>
            <div className="flex gap-2">
              {AVATAR_COLORS.map((key) => {
                const entry = AVATAR_GRADIENT_MAP[key];
                return (
                  <button
                    key={key}
                    type="button"
                    onClick={() => setAvatarColorState(key)}
                    className="w-7 h-7 rounded-full border-2 transition-all hover:scale-110"
                    style={{
                      background: entry.gradient,
                      borderColor: avatarColorState === key ? 'white' : 'transparent',
                      boxShadow: avatarColorState === key ? `0 0 0 2px ${entry.glow}40` : 'none',
                    }}
                    title={key.charAt(0).toUpperCase() + key.slice(1)}
                  />
                );
              })}
            </div>
          </div>

          {/* Banner Color */}
          <div>
            <label className="block text-xs text-txt-secondary mb-1.5">Banner Color</label>
            <div className="grid grid-cols-7 gap-1.5 mb-2">
              {[0, 1, 2].map((row) =>
                BANNER_COLOR_PRESETS.map((family) => {
                  const color = family[row]!;
                  return (
                    <button
                      key={color}
                      type="button"
                      onClick={() => { setAccentColor(color); setCustomHex(color); }}
                      className="w-7 h-7 rounded-full border-2 transition-all hover:scale-110"
                      style={{
                        backgroundColor: color,
                        borderColor: accentColor === color ? 'white' : 'transparent',
                        boxShadow: accentColor === color ? `0 0 0 2px ${color}40` : 'none',
                      }}
                      title={color}
                    />
                  );
                })
              )}
            </div>
            <div className="flex items-center gap-2">
              <input
                type="text"
                value={customHex}
                onChange={(e) => {
                  const val = e.target.value;
                  setCustomHex(val);
                  if (/^#[0-9a-fA-F]{6}$/.test(val)) {
                    setAccentColor(val);
                  }
                }}
                placeholder="#hex"
                className="input-standard w-24 px-2 py-1.5 text-xs font-mono"
                maxLength={7}
              />
              {accentColor && (
                <div
                  className="w-6 h-6 rounded-full border border-white/10 flex-shrink-0"
                  style={{ backgroundColor: accentColor }}
                />
              )}
              {accentColor && (
                <button
                  type="button"
                  onClick={() => { setAccentColor(null); setCustomHex(''); }}
                  className="text-xs text-txt-tertiary hover:text-txt-secondary transition-colors"
                >
                  Clear
                </button>
              )}
            </div>
          </div>

          {/* Bio */}
          <div>
            <label className="block text-xs text-txt-secondary mb-1.5">About Me</label>
            <div className="relative">
              <textarea
                value={bio}
                onChange={(e) => {
                  if (e.target.value.length <= 190) setBio(e.target.value);
                }}
                rows={3}
                placeholder="Tell the world about yourself..."
                className="input-standard w-full resize-none"
                maxLength={190}
              />
              <span className="absolute bottom-2 right-2 text-[10px] text-txt-tertiary">
                {bio.length}/190
              </span>
            </div>
          </div>
        </div>
      </div>

      {/* ── Account ── */}
      <div>
        <div className="text-[11px] font-semibold text-txt-tertiary uppercase tracking-wider mb-1.5">Account</div>
        <div className="rounded-lg bg-white/[0.03] border border-white/[0.04] p-3.5 space-y-4">
          <div>
            <label className="block text-xs text-txt-secondary mb-1.5">Status</label>
            <select
              value={status}
              onChange={(e) => setStatus(e.target.value as UserStatus)}
              className="input-standard w-full appearance-none"
            >
              <option value="online">Online</option>
              <option value="idle">Idle</option>
              <option value="dnd">Do Not Disturb</option>
            </select>
          </div>

          <div>
            <label className="block text-xs text-txt-secondary mb-1.5">Display Name</label>
            <input
              type="text"
              value={displayName}
              onChange={(e) => setDisplayName(e.target.value)}
              className="input-standard w-full"
            />
          </div>

          <div>
            <label className="block text-xs text-txt-secondary mb-1.5">Custom Status</label>
            <input
              type="text"
              value={customStatus}
              onChange={(e) => setCustomStatus(e.target.value)}
              className="input-standard w-full"
              placeholder="What are you up to?"
            />
          </div>
        </div>
      </div>

      {/* ── Password ── */}
      <div>
        <div className="text-[11px] font-semibold text-txt-tertiary uppercase tracking-wider mb-1.5">Password</div>
        <form onSubmit={(e) => { e.preventDefault(); handleChangePassword(); }} className="rounded-lg bg-white/[0.03] border border-white/[0.04] p-3.5 space-y-3">
          <input type="text" autoComplete="username" value={user.username} readOnly tabIndex={-1} className="sr-only" />
          <div>
            <label className="block text-xs text-txt-secondary mb-1.5">Current Password</label>
            <div className="relative">
              <input
                type={showCurrentPassword ? 'text' : 'password'}
                value={currentPassword}
                onChange={(e) => setCurrentPassword(e.target.value)}
                className="input-standard w-full pr-10"
                placeholder="Enter current password"
                autoComplete="current-password"
              />
              <button
                type="button"
                onClick={() => setShowCurrentPassword(!showCurrentPassword)}
                className="absolute right-2.5 top-1/2 -translate-y-1/2 text-txt-tertiary hover:text-txt-secondary transition-colors"
              >
                <svg className="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
                  {showCurrentPassword ? (
                    <path strokeLinecap="round" strokeLinejoin="round" d="M13.875 18.825A10.05 10.05 0 0112 19c-4.478 0-8.268-2.943-9.543-7a9.97 9.97 0 011.563-3.029m5.858.908a3 3 0 114.243 4.243M9.878 9.878l4.242 4.242M9.878 9.878L3 3m6.878 6.878L21 21" />
                  ) : (
                    <>
                      <path strokeLinecap="round" strokeLinejoin="round" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
                      <path strokeLinecap="round" strokeLinejoin="round" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z" />
                    </>
                  )}
                </svg>
              </button>
            </div>
          </div>
          <div>
            <label className="block text-xs text-txt-secondary mb-1.5">New Password</label>
            <div className="relative">
              <input
                type={showNewPassword ? 'text' : 'password'}
                value={newPassword}
                onChange={(e) => setNewPassword(e.target.value)}
                className="input-standard w-full pr-10"
                placeholder="Minimum 6 characters"
                autoComplete="new-password"
              />
              <button
                type="button"
                onClick={() => setShowNewPassword(!showNewPassword)}
                className="absolute right-2.5 top-1/2 -translate-y-1/2 text-txt-tertiary hover:text-txt-secondary transition-colors"
              >
                <svg className="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
                  {showNewPassword ? (
                    <path strokeLinecap="round" strokeLinejoin="round" d="M13.875 18.825A10.05 10.05 0 0112 19c-4.478 0-8.268-2.943-9.543-7a9.97 9.97 0 011.563-3.029m5.858.908a3 3 0 114.243 4.243M9.878 9.878l4.242 4.242M9.878 9.878L3 3m6.878 6.878L21 21" />
                  ) : (
                    <>
                      <path strokeLinecap="round" strokeLinejoin="round" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
                      <path strokeLinecap="round" strokeLinejoin="round" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z" />
                    </>
                  )}
                </svg>
              </button>
            </div>
          </div>
          <div>
            <label className="block text-xs text-txt-secondary mb-1.5">Confirm New Password</label>
            <input
              type="password"
              value={confirmNewPassword}
              onChange={(e) => setConfirmNewPassword(e.target.value)}
              className="input-standard w-full"
              placeholder="Confirm new password"
              autoComplete="new-password"
            />
          </div>

          {passwordError && (
            <div className="p-2 bg-accent-rose/10 border border-accent-rose/30 rounded text-txt-danger text-xs">{passwordError}</div>
          )}
          {passwordResults && passwordResults.length > 0 && (
            <div className="space-y-1">
              {passwordResults.map(r => (
                <div key={r.origin} className="flex items-center justify-between text-xs px-2 py-1 rounded bg-white/[0.02]">
                  <span className="text-txt-secondary">{r.origin}</span>
                  {r.success ? (
                    <span className="text-status-online">Synced</span>
                  ) : (
                    <span className="text-txt-danger" title={r.error}>Failed — will sync on reconnect</span>
                  )}
                </div>
              ))}
            </div>
          )}

          <button
            type="submit"
            disabled={passwordLoading || !currentPassword || !newPassword || !confirmNewPassword}
            className="px-4 py-2 bg-accent-primary hover:bg-accent-primary/80 text-white text-sm font-medium rounded-lg transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
          >
            {passwordLoading ? 'Changing...' : 'Change Password'}
          </button>
        </form>
      </div>

      {/* ── Danger Zone ── */}
      <div>
        <div className="text-[11px] font-semibold text-txt-tertiary uppercase tracking-wider mb-1.5">Danger Zone</div>
        <div className="rounded-lg bg-accent-rose/5 border border-accent-rose/20 p-3.5">
          <p className="text-sm text-txt-secondary mb-3">
            Once you delete your account, there is no going back. Your messages will remain but be attributed to "Deleted User".
          </p>
          <button
            onClick={() => setShowDeleteModal(true)}
            className="px-4 py-2 bg-accent-rose hover:bg-accent-rose/80 text-white text-sm font-medium rounded-lg transition-colors"
          >
            Delete Account
          </button>
        </div>
      </div>

      {error && (
        <div className="p-2 bg-accent-rose/10 border border-accent-rose/30 rounded text-txt-danger text-sm">{error}</div>
      )}

      {hasChanges && (
        <div className="sticky bottom-0 z-10 pointer-events-none">
          <div className="flex justify-center pt-3 pb-1">
            <div className="glass-bubble rounded-full px-4 py-2 flex items-center gap-2 animate-slide-up pointer-events-auto">
              <button
                onClick={handleReset}
                className="px-3 py-1 text-sm text-txt-tertiary hover:text-txt-secondary transition-colors"
              >
                Reset
              </button>
              <button
                onClick={handleSave}
                disabled={isLoading || uploadingAvatar || uploadingBanner}
                className="px-3 py-1.5 bg-accent-primary hover:bg-accent-primary/80 text-white text-sm font-medium rounded-full transition-colors disabled:opacity-50"
              >
                {isLoading ? 'Saving...' : 'Save'}
              </button>
            </div>
          </div>
        </div>
      )}

      {/* Crop Modals */}
      <ImageCropModal
        isOpen={avatarCropSrc !== null}
        onClose={() => setAvatarCropSrc(null)}
        imageSrc={avatarCropSrc ?? ''}
        onCropComplete={handleAvatarCropComplete}
        title="Crop Avatar"
        cropShape="round"
        aspectRatio={1}
        maxOutputDimension={256}
      />
      <ImageCropModal
        isOpen={bannerCropSrc !== null}
        onClose={() => setBannerCropSrc(null)}
        imageSrc={bannerCropSrc ?? ''}
        onCropComplete={handleBannerCropComplete}
        title="Crop Banner"
        cropShape="rect"
        aspectRatio={3}
        maxOutputDimension={1280}
      />

      <DeleteAccountModal
        isOpen={showDeleteModal}
        onClose={() => setShowDeleteModal(false)}
      />
    </div>
  );
}