:root {
  /* theme id */
  --wmh-theme: pink;
  --wmh-mode: light;
  --wmh-ui: default;

  /* brand / accent */
  --wmh-primary: #FF91A4;
  --wmh-secondary: #FFB6C1;
  --wmh-cta: #FF91A4;
  --wmh-primary-hover: #FF7A8F;
  --wmh-primary-soft: #FFE4E1;
  --wmh-primary-border: #FFC0CB;

  /* gradients (login / avatars etc.) */
  --wmh-gradient-start: #FFB6C1;
  --wmh-gradient-mid: #FF91A4;
  --wmh-gradient-end: #FFC0CB;

  /* rgb helpers for rgba() */
  --wmh-primary-rgb: 255, 145, 164;
  --wmh-gradient-start-rgb: 255, 182, 193;

  /* base surfaces */
  --wmh-page-bg: #f0f2f5;
  --wmh-surface: #ffffff;
  --wmh-surface-2: #fafafa;
  --wmh-text: #111827;
  --wmh-text-muted: #6b7280;
  --wmh-border: rgba(0, 0, 0, 0.08);
  --wmh-border-strong: rgba(0, 0, 0, 0.18);
  --wmh-shadow-1: 0 10px 30px rgba(0, 0, 0, 0.12);
  --wmh-shadow-2: 0 2px 10px rgba(0, 0, 0, 0.08);
  --wmh-radius-lg: 16px;
  --wmh-radius-md: 12px;
  --wmh-radius-sm: 10px;
  --wmh-border-width: 1px;
  --wmh-blur: 0px;

  /* admin page background tint */
  --wmh-admin-bg: #FFF0F5;

  color-scheme: light;
}

:root[data-mode="dark"] {
  color-scheme: dark;
}

:root[data-theme="blue"] {
  --wmh-theme: blue;

  --wmh-primary: #1677FF;
  --wmh-secondary: #69B1FF;
  --wmh-cta: #1677FF;
  --wmh-primary-hover: #0958D9;
  --wmh-primary-soft: #E6F4FF;
  --wmh-primary-border: #91CAFF;

  --wmh-gradient-start: #69B1FF;
  --wmh-gradient-mid: #1677FF;
  --wmh-gradient-end: #91CAFF;

  --wmh-primary-rgb: 22, 119, 255;
  --wmh-gradient-start-rgb: 105, 177, 255;

  --wmh-admin-bg: #F0F5FF;
}

/* ==================== Dark Mode (targeted overrides) ==================== */
:root[data-mode="dark"] body {
  background: var(--wmh-page-bg, #0b1020);
  color: var(--wmh-text, #e5e7eb);
}

:root[data-mode="dark"] .chat-area {
  background: var(--wmh-page-bg, #0b1020);
}

:root[data-mode="dark"] .nav-rail {
  background: var(--wmh-surface-2, #0f172a);
  border-right-color: var(--wmh-border, rgba(255, 255, 255, 0.12));
}

:root[data-mode="dark"] .sidebar,
:root[data-mode="dark"] .member-panel,
:root[data-mode="dark"] .nav-popup,
:root[data-mode="dark"] .chat-header,
:root[data-mode="dark"] .input-area,
:root[data-mode="dark"] .settings-panel,
:root[data-mode="dark"] .modal-content,
:root[data-mode="dark"] .context-menu,
:root[data-mode="dark"] .emoji-panel,
:root[data-mode="dark"] .mention-panel,
:root[data-mode="dark"] .announcement-container,
:root[data-mode="dark"] .manage-container,
:root[data-mode="dark"] .report-container,
:root[data-mode="dark"] .chatsearch-container,
:root[data-mode="dark"] .login-box,
:root[data-mode="dark"] .auth-box,
:root[data-mode="dark"] .top-bar,
:root[data-mode="dark"] .card {
  background: var(--wmh-surface, #111827);
  color: var(--wmh-text, #e5e7eb);
  border-color: var(--wmh-border, rgba(255, 255, 255, 0.12));
}

:root[data-mode="dark"] .sidebar-header {
  background: var(--wmh-surface, #111827);
}

:root[data-mode="dark"] .chat-header,
:root[data-mode="dark"] .input-area {
  border-color: var(--wmh-border, rgba(255, 255, 255, 0.12));
}

:root[data-mode="dark"] .message-item:not(.self) .msg-bubble {
  background: var(--wmh-surface-2, #0f172a);
  color: var(--wmh-text, #e5e7eb);
}

:root[data-mode="dark"] .msg-header,
:root[data-mode="dark"] .msg-time,
:root[data-mode="dark"] .session-preview,
:root[data-mode="dark"] .group-desc,
:root[data-mode="dark"] .friend-status,
:root[data-mode="dark"] .user-level {
  color: var(--wmh-text-muted, #9ca3af) !important;
}

:root[data-mode="dark"] .modal-header,
:root[data-mode="dark"] .modal-footer {
  border-color: var(--wmh-border, rgba(255, 255, 255, 0.12)) !important;
}

:root[data-mode="dark"] .form-control,
:root[data-mode="dark"] .form-select,
:root[data-mode="dark"] textarea,
:root[data-mode="dark"] input[type="text"],
:root[data-mode="dark"] input[type="email"],
:root[data-mode="dark"] input[type="password"],
:root[data-mode="dark"] input[type="number"] {
  background-color: rgba(255, 255, 255, 0.04) !important;
  color: var(--wmh-text, #e5e7eb) !important;
  border-color: var(--wmh-border, rgba(255, 255, 255, 0.12)) !important;
}

:root[data-mode="dark"] .table {
  color: var(--wmh-text, #e5e7eb);
}

:root[data-mode="dark"] .table th,
:root[data-mode="dark"] .table td {
  border-color: var(--wmh-border, rgba(255, 255, 255, 0.12)) !important;
}

/* ==================== UI Style: Glassmorphism ==================== */
:root[data-ui="glass"] .sidebar,
:root[data-ui="glass"] .top-bar,
:root[data-ui="glass"] .nav-popup,
:root[data-ui="glass"] .settings-panel,
:root[data-ui="glass"] .modal-content,
:root[data-ui="glass"] .card,
:root[data-ui="glass"] .login-box,
:root[data-ui="glass"] .auth-box,
:root[data-ui="glass"] .chat-header,
:root[data-ui="glass"] .input-area {
  background: var(--wmh-surface);
  border: var(--wmh-border-width) solid var(--wmh-border);
  border-radius: var(--wmh-radius-lg);
  box-shadow: var(--wmh-shadow-1);
  backdrop-filter: blur(var(--wmh-blur));
  -webkit-backdrop-filter: blur(var(--wmh-blur));
}

:root[data-ui="glass"] .nav-rail {
  background: var(--wmh-surface-2);
  border-right: var(--wmh-border-width) solid var(--wmh-border);
  backdrop-filter: blur(var(--wmh-blur));
  -webkit-backdrop-filter: blur(var(--wmh-blur));
}

/* ==================== UI Style: Neumorphism ==================== */
:root[data-ui="neumorph"] .sidebar,
:root[data-ui="neumorph"] .top-bar,
:root[data-ui="neumorph"] .nav-popup,
:root[data-ui="neumorph"] .settings-panel,
:root[data-ui="neumorph"] .modal-content,
:root[data-ui="neumorph"] .card,
:root[data-ui="neumorph"] .login-box,
:root[data-ui="neumorph"] .auth-box,
:root[data-ui="neumorph"] .chat-header,
:root[data-ui="neumorph"] .input-area,
:root[data-ui="neumorph"] .nav-rail {
  background: var(--wmh-surface);
  border: 0;
  border-radius: var(--wmh-radius-lg);
  box-shadow: var(--wmh-shadow-1);
}

:root[data-ui="neumorph"] .msg-bubble {
  border-radius: var(--wmh-radius-lg);
}

/* ==================== UI Style: Brutalism ==================== */
:root[data-ui="brutal"] .sidebar,
:root[data-ui="brutal"] .top-bar,
:root[data-ui="brutal"] .nav-popup,
:root[data-ui="brutal"] .settings-panel,
:root[data-ui="brutal"] .modal-content,
:root[data-ui="brutal"] .card,
:root[data-ui="brutal"] .login-box,
:root[data-ui="brutal"] .auth-box,
:root[data-ui="brutal"] .chat-header,
:root[data-ui="brutal"] .input-area,
:root[data-ui="brutal"] .nav-rail,
:root[data-ui="brutal"] .msg-bubble {
  border-radius: 0 !important;
  box-shadow: none !important;
  border: 2px solid var(--wmh-border) !important;
}

/* ==================== Theme Panel ==================== */
.wmh-theme-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.wmh-theme-overlay.show {
  display: flex;
}

.wmh-theme-panel {
  width: 100%;
  max-width: 520px;
  background: var(--wmh-surface, #fff);
  color: var(--wmh-text, #111827);
  border: var(--wmh-border-width, 1px) solid var(--wmh-border, rgba(0, 0, 0, 0.08));
  border-radius: var(--wmh-radius-lg, 16px);
  box-shadow: var(--wmh-shadow-1, 0 10px 30px rgba(0, 0, 0, 0.12));
  overflow: hidden;
}

.wmh-theme-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: var(--wmh-border-width, 1px) solid var(--wmh-border, rgba(0, 0, 0, 0.08));
}

.wmh-theme-title {
  font-weight: 700;
  font-size: 16px;
}

.wmh-theme-close {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  border: var(--wmh-border-width, 1px) solid var(--wmh-border, rgba(0, 0, 0, 0.08));
  background: transparent;
  color: inherit;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.wmh-theme-body {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.wmh-theme-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.wmh-theme-label {
  font-size: 12px;
  color: var(--wmh-text-muted, #6b7280);
}

.wmh-theme-select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: var(--wmh-border-width, 1px) solid var(--wmh-border, rgba(0, 0, 0, 0.08));
  background: rgba(255, 255, 255, 0.6);
  color: inherit;
  outline: none;
}

:root[data-mode="dark"] .wmh-theme-select {
  background: rgba(255, 255, 255, 0.06);
}

.wmh-theme-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding-top: 8px;
}

.wmh-theme-btn {
  padding: 10px 12px;
  border-radius: 12px;
  border: var(--wmh-border-width, 1px) solid var(--wmh-border, rgba(0, 0, 0, 0.08));
  background: var(--wmh-primary, #FF91A4);
  color: #fff;
  cursor: pointer;
  font-weight: 600;
}

.wmh-theme-btn-secondary {
  background: transparent;
  color: var(--wmh-text, #111827);
}

:root[data-mode="dark"] .wmh-theme-btn-secondary {
  color: var(--wmh-text, #e5e7eb);
}