/* ============================================
   VARIABLES CSS GLOBALES
   ============================================ */

:root {
  /* ==========================================
     PALETA DE COLOR PRINCIPAL (Azul sólido)
     ========================================== */
  --blue-50: #f0f6ff;
  --blue-100: #EDF3FE;
  --blue-200: #b8d4fe;
  --blue-300: #93bdfd;
  --blue-400: #6ea4fb;
  --blue-500: #426EFE;
  --blue-600: #0456d4;
  --blue-700: #0343a8;
  --blue-800: #02307d;
  --blue-900: #011e52;

  /* ==========================================
     NEUTROS
     ========================================== */
  --neutral-white: #FFFFFF;
  --neutral-50: #fafafa;
  --neutral-100: #f5f5f5;
  --neutral-200: #e8e8e8;
  --neutral-300: #d1d1d1;
  --neutral-400: #bbbbbb;
  --neutral-500: #999999;
  --neutral-600: #777777;
  --neutral-700: #555555;
  --neutral-800: #333333;
  --neutral-900: #191B23;
  --neutral-black: #000000;

  /* ==========================================
     SEMÁNTICOS (feedback)
     ========================================== */
  --color-success: #22c55e;
  --color-success-bg: #f0fdf4;
  --color-success-track: #c8f0d4;
  --color-warning: #f59e0b;
  --color-warning-bg: #fffbeb;
  --color-warning-text: #92400e;
  --color-danger: #f34f4f;
  --color-danger-hover: #e60000;
  --color-danger-bg: #fef2f2;

  /* ==========================================
     OVERLAY
     ========================================== */
  --overlay-sidebar: rgba(0, 0, 0, 0.4);
  --overlay-modal: rgba(0, 0, 0, 0.5);

  /* ==========================================
     SOMBRAS
     ========================================== */
  --shadow-pill: 0 2px 4px rgba(0, 0, 0, 0.07);
  --shadow-sidebar: 2px 0 24px rgba(0, 0, 0, 0.08);
  --shadow-input: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-input-focus: 0 4px 24px rgba(5, 106, 255, 0.12);
  --shadow-modal: 0 -8px 40px rgba(0, 0, 0, 0.15);

  /* ==========================================
     TIPOGRAFÍA
     ========================================== */
  --font-size-xs: clamp(0.6875rem, 0.65rem + 0.2vw, 0.75rem);
  --font-size-sm: clamp(0.8125rem, 0.78rem + 0.2vw, 0.875rem);
  --font-size-base: clamp(0.980rem, 0.9rem + 0.2vw, 1rem);
  --font-size-md: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --font-size-lg: clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem);
  --font-size-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  --font-size-xxl: clamp(1.5rem, 1.35rem + 0.75vw, 2rem);

  --h1-size: clamp(1.75rem, 1.4rem + 1.75vw, 2.5rem);
  --h2-size: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
  --h3-size: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --h4-size: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
  --h5-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --h6-size: clamp(0.9375rem, 0.9rem + 0.2vw, 1rem);

  /* ==========================================
     RADIOS
     ========================================== */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 26px;
  --radius-pill: 999px;
  --radius-input: 22px;
  --radius-input-desktop: 26px;
  --radius-modal: 14px;
  --radius-modal-container: 20px;

  /* ==========================================
     TRANSICIONES
     ========================================== */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.25s ease;
  --transition-sidebar: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-modal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  /* ==========================================
     LAYOUT
     ========================================== */
  --header-height: 60px;
  --sidebar-width-desktop: 70%;
  --sidebar-max-desktop: 420px;
  --sidebar-width-mobile: 70%;
  --sidebar-max-mobile: 320px;
  --main-max-desktop: 900px;
  --main-max-tablet: 668px;

  /* ==========================================
     BOTONES
     ========================================== */
  --btn-icon-size-sm: 30px;
  --btn-icon-size-md: 35px;
  --btn-icon-size-lg: 45px;

  /* ==========================================
     ICONOS
     ========================================== */
  --icon-size-sm: 18px;
  --icon-size-md: 20px;
  --icon-size-lg: 22px;

  /* ==========================================
     COLORES POR SECCIÓN (independientes)
     ========================================== */

  /* --- Body --- */
  --body-bg: var(--neutral-white);
  --body-text: var(--neutral-900);

  /* --- Header --- */
  --header-bg: var(--neutral-white);
  --header-border: var(--neutral-100);
  --header-btn-color: var(--neutral-800);
  --header-btn-hover-bg: var(--neutral-200);
  --header-btn-hover-color: var(--neutral-black);
  --header-pill-bg: var(--neutral-white);
  --header-pill-border: var(--neutral-300);

  /* --- Sidebar --- */
  --sidebar-bg: var(--neutral-white);
  --sidebar-title-color: var(--neutral-900);
  --sidebar-border: var(--neutral-100);
  --sidebar-chip-color: var(--neutral-700);
  --sidebar-chip-hover-bg: var(--neutral-100);
  --sidebar-chip-active-bg: var(--blue-50);
  --sidebar-chip-active-color: var(--blue-500);
  --sidebar-timestamp-color: var(--neutral-500);
  --sidebar-empty-text: var(--neutral-500);
  --sidebar-settings-color: var(--neutral-700);
  --sidebar-settings-hover-bg: var(--neutral-100);
  --sidebar-settings-hover-color: var(--neutral-800);
  --sidebar-newchat-btn-bg: var(--blue-500);
  --sidebar-newchat-btn-color: var(--neutral-white);
  --sidebar-newchat-btn-hover: var(--blue-600);

  /* --- Config Modal --- */
  --config-modal-bg: var(--neutral-white);
  --config-modal-title: var(--neutral-900);
  --config-modal-border: var(--neutral-100);
  --config-close-btn-border: var(--neutral-200);
  --config-close-btn-color: var(--neutral-600);
  --config-close-btn-hover-bg: var(--neutral-100);
  --config-close-btn-hover-color: var(--neutral-900);
  --config-close-btn-hover-border: var(--neutral-300);

  /* Switch */
  --config-switch-row-bg: var(--neutral-50);
  --config-switch-row-border: var(--neutral-300);
  --config-switch-label: var(--neutral-800);
  --config-switch-track-off: var(--neutral-300);
  --config-switch-track-on: var(--color-success-track);
  --config-switch-thumb-bg: var(--neutral-white);
  --config-switch-thumb-on: var(--color-success);
  --config-switch-thumb-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
  --config-switch-thumb-shadow-on: 0 2px 8px rgba(34, 197, 94, 0.3);

  /* Botón eliminar */
  --config-delete-color: var(--color-danger);
  --config-delete-hover-bg: var(--neutral-100);
  --config-delete-hover-color: var(--color-danger-hover);

  /* Radio */
  --config-radio-border: var(--neutral-200);
  --config-radio-card-hover-bg: var(--neutral-50);
  --config-radio-indicator-border: var(--neutral-300);
  --config-radio-checked-border: var(--color-success);
  --config-radio-checked-dot: var(--color-success);
  --config-radio-checked-bg: var(--color-success-bg);
  --config-radio-label: var(--neutral-800);
  --config-radio-label-checked: #166534;
  --config-section-bordered-border: var(--neutral-200);
  --config-section-title: var(--neutral-900);

  /* --- Chat --- */
  --chat-container-max: var(--main-max-desktop);
  --chat-bg: var(--neutral-white);

  /* --- Burbujas --- */
  --bubble-bot-text: var(--neutral-900);
  --bubble-user-bg: var(--blue-100);
  --bubble-user-text: var(--neutral-900);

  /* --- Acciones de mensaje --- */
  --message-actions-color: var(--neutral-600);
  --message-actions-hover-bg: var(--neutral-100);
  --message-actions-hover-color: var(--neutral-800);

  /* --- Input Area --- */
  --input-area-bg: var(--neutral-white);
  --input-wrapper-bg: var(--neutral-white);
  --input-wrapper-border: var(--neutral-300);
  --input-textarea-color: var(--neutral-900);
  --input-placeholder-color: var(--neutral-600);

  /* --- Toolbar --- */
  --tool-btn-color: var(--neutral-700);
  --tool-btn-border: var(--neutral-300);
  --tool-btn-hover-bg: var(--neutral-100);
  --tool-btn-hover-color: var(--neutral-800);
  --tool-btn-hover-border: var(--neutral-400);
  --tool-btn-active-bg: var(--blue-50);
  --tool-btn-active-color: var(--blue-500);
  --tool-btn-active-border: var(--blue-500);

  /* --- Botón Enviar --- */
  --send-btn-idle-bg: #B0C1FF;
  --send-btn-color: var(--neutral-white);
  --send-btn-active-bg: var(--blue-500);
  --send-btn-hover-bg: var(--blue-600);

  /* --- Code Wrapper --- */
  --code-wrapper-bg: var(--neutral-50);
  --code-wrapper-header-bg: var(--neutral-50);
  --code-wrapper-border: var(--neutral-200);
  --code-wrapper-language: var(--neutral-600);
  --code-wrapper-copy-color: var(--neutral-600);
  --code-wrapper-copy-hover-bg: var(--neutral-300);
  --code-wrapper-copy-hover-color: var(--neutral-800);
  --code-wrapper-code-color: #383a42;

  /* --- Markdown --- */
  --markdown-link-color: var(--blue-500);
  --markdown-link-hover: var(--blue-600);
  --markdown-blockquote-border: var(--neutral-300);
  --markdown-blockquote-color: var(--neutral-700);
  --markdown-table-border: var(--neutral-300);
  --markdown-code-inline-bg: var(--neutral-100);
  --markdown-code-inline-color: #7D7F85;

  /* --- Toast --- */
  --toast-bg: var(--neutral-100);
  --toast-color: var(--neutral-800);

  /* --- Spinner --- */
  --spinner-dot-color: var(--neutral-300);
}

/* ============================================
   RESET GLOBAL
   ============================================ */

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.5;
  background-color: var(--body-bg);
  height: 100%;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

a {
  text-decoration: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

input,
textarea {
  border: none;
  outline: none;
  font: inherit;
  color: inherit;
  background: none;
}

/* ============================================
   SCROLLBARS OCULTAS GLOBAL
   ============================================ */

* {
  scrollbar-width: thin;
  scrollbar-color: transparent transparent;
}

*::-webkit-scrollbar {
  width: 0;
  height: 0;
  background: transparent;
}

*::-webkit-scrollbar-track {
  background: transparent;
}

*::-webkit-scrollbar-thumb {
  background: transparent;
}

/* ============================================
   TIPOGRAFÍA H1-H6
   ============================================ */

h1, .h1 { font-size: var(--h1-size); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h2, .h2 { font-size: var(--h2-size); font-weight: 700; line-height: 1.25; letter-spacing: -0.015em; }
h3, .h3 { font-size: var(--h3-size); font-weight: 600; line-height: 1.3; letter-spacing: -0.01em; }
h4, .h4 { font-size: var(--h4-size); font-weight: 600; line-height: 1.35; }
h5, .h5 { font-size: var(--h5-size); font-weight: 500; line-height: 1.4; }
h6, .h6 { font-size: var(--h6-size); font-weight: 500; line-height: 1.45; }

p {
  font-size: var(--font-size-base);
  line-height: 1.5;
}

/* ============================================
   HEADER
   ============================================ */

.header {
  width: 100%;
  height: var(--header-height);
  background-color: var(--header-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 15px;
}

.header__left {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
}

.header__logo-img {
  width: 35px;
  height: 35px;
  border-radius: 15px;
  object-fit: cover;
  display: block;
}

.header__pill {
  display: flex;
  align-items: center;
  gap: 4px;
  background-color: var(--header-pill-bg);
  padding: 3px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-pill);
  border: 1px solid var(--neutral-200);
}

.header__icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--btn-icon-size-md);
  height: var(--btn-icon-size-md);
  border-radius: 50%;
  background-color: transparent;
  color: var(--header-btn-color);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  flex-shrink: 0;
}

.header__icon-btn:hover {
  background-color: var(--header-btn-hover-bg);
  color: var(--header-btn-hover-color);
}

.header__share-btn.is-hidden {
  display: none;
}

.header__right--desktop {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 8px;
}

/* ============================================
   HEADER RESPONSIVE
   ============================================ */

.header__left--mobile,
.header__right--mobile {
  display: none;
}

@media (max-width: 768px) {
  .header__container {
    padding: 0 16px;
  }

  .header__left:not(.header__left--mobile),
  .header__right--desktop {
    display: none;
  }

  .header__left--mobile {
    display: flex;
    align-items: center;
    height: 100%;
  }

  .header__right--mobile {
    display: flex;
    align-items: center;
    height: 100%;
    gap: 15px;
  }

  .header__logo,
  .header__pill {
    display: none;
  }

  .header__left--mobile .header__icon-btn,
  .header__right--mobile .header__icon-btn {
    box-shadow: none;
    border: none;
  }
}

/* ============================================
   SIDEBAR OVERLAY
   ============================================ */

.sidebar-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--overlay-sidebar);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.sidebar-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   SIDEBAR
   ============================================ */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width-desktop);
  max-width: var(--sidebar-max-desktop);
  height: 100%;
  background-color: var(--sidebar-bg);
  z-index: 210;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sidebar);
  transform: translateX(-100%);
  transition: transform var(--transition-sidebar);
  overflow: hidden;
}

.sidebar.is-open {
  transform: translateX(0);
}

.sidebar__header {
  padding: 20px 20px 12px;
  border-bottom: 1px solid var(--sidebar-border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar__title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--sidebar-title-color);
  letter-spacing: -0.01em;
}

.sidebar__chips-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 8px 12px 16px;
  scroll-behavior: smooth;
}

.sidebar__empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px 10px;
  height: 100%;
  gap: 10px;
}

.sidebar__empty-title{
  font-size: var(--h1-size);
  font-weight: 500;
}

.sidebar__empty-subtitle {
  font-size: var(--font-size-base);
  font-weight: 400;
  color: var(--sidebar-empty-text);
  line-height: 1.5;
  max-width: 240px;
}

.sidebar__new-chat-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background-color: var(--sidebar-newchat-btn-bg);
  color: var(--sidebar-newchat-btn-color);
  font-size: var(--font-size-base);
  font-weight: 500;
  border-radius: var(--radius-pill);
  transition: background-color var(--transition-normal), transform var(--transition-fast);
  white-space: nowrap;
}

.sidebar__new-chat-btn:hover {
  background-color: var(--sidebar-newchat-btn-hover);
  transform: scale(1.03);
}

.sidebar__timestamp-group {
  margin-bottom: 6px;
}

.sidebar__timestamp {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--sidebar-timestamp-color);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 10px 8px 6px;
}

.sidebar__chat-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar__chat-chip {
  display: flex;
  align-items: center;
  padding: 15px 20px;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.sidebar__chat-chip:hover {
  background-color: var(--sidebar-chip-hover-bg);
}

.sidebar__chat-chip--active {
  background-color: var(--sidebar-chip-active-bg);
}

.sidebar__chat-chip--active:hover {
  background-color: var(--sidebar-chip-active-bg);
}

.sidebar__chat-title {
  font-size: var(--font-size-md);
  color: var(--sidebar-chip-color);
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.sidebar__chat-chip--active .sidebar__chat-title {
  color: var(--sidebar-chip-active-color);
  font-weight: 500;
}

.sidebar__settings-wrapper {
  flex-shrink: 0;
  display: flex;
  justify-content: flex-end;
  padding: 8px 12px 12px;
  border-top: 1px solid var(--sidebar-border);
}

.sidebar__settings-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--btn-icon-size-lg);
  height: var(--btn-icon-size-lg);
  border-radius: 50%;
  background-color: transparent;
  color: var(--blue-500);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.sidebar__settings-btn:hover {
  background-color: var(--sidebar-settings-hover-bg);
  color: var(--sidebar-settings-hover-color);
}

/* ============================================
   SIDEBAR RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  .sidebar {
    width: var(--sidebar-width-mobile);
    max-width: var(--sidebar-max-mobile);
  }

  .sidebar__header {
    padding: 16px 16px 10px;
  }

  .sidebar__title {
    font-size: 1rem;
  }

  .sidebar__chips-container {
    padding: 6px 8px 12px;
  }

  .sidebar__chat-chip {
    padding: 15px 20px;
    border-radius: var(--radius-xl);
  }

  .sidebar__settings-wrapper {
    padding: 6px 8px 10px;
  }
}

/* ============================================
   CONFIG OVERLAY
   ============================================ */

.config-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--overlay-modal);
  z-index: 300;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
  pointer-events: none;
}

.config-overlay.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* ============================================
   CONFIG MODAL
   ============================================ */

.config-modal {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 95%;
  background-color: var(--config-modal-bg);
  z-index: 310;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-modal-container) var(--radius-modal-container) 0 0;
  box-shadow: var(--shadow-modal);
  transform: translateY(100%);
  transition: transform var(--transition-modal);
  overflow: hidden;
  padding: 0 12px;
  pointer-events: none;
}

.config-modal.is-open {
  transform: translateY(0);
  pointer-events: auto;
}

.config-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 14px;
  flex-shrink: 0;
}

.config-modal__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--config-modal-title);
  letter-spacing: -0.01em;
}

.config-modal__close-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background-color: transparent;
  color: var(--config-close-btn-color);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  flex-shrink: 0;
}

.config-modal__close-btn:hover {
  background-color: var(--config-close-btn-hover-bg);
  color: var(--config-close-btn-hover-color);
}

.config-modal__body {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 20px 20px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ============================================
   CONFIG SECCIONES
   ============================================ */

.config-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.config-section--centered {
  align-items: center;
}

.config-section--bordered {
  border: 1.5px solid var(--config-section-bordered-border);
  border-radius: var(--radius-modal);
  padding: 20px 16px;
  gap: 16px;
}

.config-section__title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--config-section-title);
  text-align: center;
}

/* ============================================
   SWITCH ROW
   ============================================ */

.config-switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-radius: 12px;
  gap: 12px;
}

.config-switch-row__label {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--config-switch-label);
  line-height: 1.4;
  flex: 1;
}

/* ============================================
   SWITCH (TOGGLE)
   ============================================ */

.config-switch {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
}

.config-switch__track {
  display: block;
  width: 52px;
  height: 28px;
  border-radius: var(--radius-pill);
  background-color: var(--config-switch-track-off);
  position: relative;
  transition: background-color var(--transition-slow);
}

.config-switch[aria-checked="true"] .config-switch__track {
  background-color: var(--config-switch-track-on);
}

.config-switch__thumb {
  display: block;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--config-switch-thumb-bg);
  box-shadow: var(--config-switch-thumb-shadow);
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform var(--transition-slow);
}

.config-switch[aria-checked="true"] .config-switch__thumb {
  transform: translateX(24px);
  background-color: var(--config-switch-thumb-on);
  box-shadow: var(--config-switch-thumb-shadow-on);
}

/* ============================================
   BOTÓN ELIMINAR HISTORIAL
   ============================================ */

.config-delete-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  background-color: transparent;
  color: var(--config-delete-color);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-pill);
  transition: background-color var(--transition-normal), transform var(--transition-fast);
  white-space: nowrap;
}

.config-delete-btn:hover {
  background-color: var(--config-delete-hover-bg);
  color: var(--config-delete-hover-color);
  transform: scale(1.02);
}

/* ============================================
   RADIO BUTTONS
   ============================================ */

.config-radio-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.config-radio-card {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 12px;
  cursor: pointer;
  transition: background-color var(--transition-normal);
  position: relative;
}

.config-radio-card:hover {
  background-color: var(--config-radio-card-hover-bg);
}

.config-radio-card__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.config-radio-card__indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--config-radio-indicator-border);
  flex-shrink: 0;
  transition: border-color var(--transition-normal), background-color var(--transition-normal);
  position: relative;
}

.config-radio-card__indicator::after {
  content: '';
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: transparent;
  transition: background-color var(--transition-normal), transform var(--transition-normal);
  transform: scale(0);
}

.config-radio-card__input:checked ~ .config-radio-card__indicator {
  border-color: var(--config-radio-checked-border);
}

.config-radio-card__input:checked ~ .config-radio-card__indicator::after {
  background-color: var(--config-radio-checked-dot);
  transform: scale(1);
}

.config-radio-card__input:checked ~ .config-radio-card__label {
  color: var(--config-radio-label-checked);
}

.config-radio-card:has(.config-radio-card__input:checked) {
  background-color: var(--config-radio-checked-bg);
}

.config-radio-card__label {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--config-radio-label);
  transition: color var(--transition-normal);
}

/* SOCIAL MEDIA*/
.social-media-container{
  padding: 20px 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
}

.discord-btn{
  background: var(--blue-500);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #FFFFFF;
  padding: 10px 15px;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-base);
  font-weight: 600;
}

.discord-btn:hover{
  transform: scale(1.02);
}

.discord-btn svg{
  width: var(--icon-size-md);
}

/* ============================================
   CONFIG MODAL RESPONSIVE
   ============================================ */

@media (min-width: 769px) {
  .config-modal {
    left: 50%;
    top: 50%;
    bottom: auto;
    width: 80%;
    max-width: 560px;
    height: 80%;
    max-height: 650px;
    border-radius: var(--radius-modal-container);
    transform: translate(-50%, -50%) scale(0.9);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity var(--transition-slow);
  }

  .config-modal.is-open {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }

  .config-modal__body {
    padding: 24px 24px 32px;
  }
}

@media (max-width: 768px) {
  .config-modal__header {
    padding: 16px 16px 12px;
  }

  .config-modal__body {
    padding: 16px 16px 28px;
    gap: 16px;
  }

  .config-switch-row {
    padding: 12px 14px;
  }

  .config-radio-card {
    padding: 12px 14px;
  }
}

/* ============================================
   MAIN CHAT CONTAINER
   ============================================ */

.main-chat-container {
  width: 100%;
  max-width: var(--chat-container-max);
  height: calc(100% - var(--header-height));
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  background-color: var(--chat-bg);
}

@media (max-width: 1024px) {
  .main-chat-container {
    max-width: var(--main-max-tablet);
  }
}

@media (max-width: 768px) {
  .main-chat-container {
    max-width: 100%;
  }
}

/* ============================================
   MESSAGES CONTAINER
   ============================================ */

.messages-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2vw, 24px);
  scroll-behavior: smooth;
  padding: clamp(12px, 2vw, 20px) clamp(35px, 2vw, 16px) clamp(16px, 2.5vw, 24px);
  padding-bottom: calc(clamp(100px, 18vh, 140px) + clamp(16px, 2.5vw, 24px));
  -webkit-overflow-scrolling: touch;
  scroll-padding-bottom: 20px;
}

/* ============================================
   MESSAGE WRAPPER
   ============================================ */

.message-wrapper {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.message-wrapper--bot {
  align-items: flex-start;
}

.message-wrapper--user {
  align-items: flex-end;
}

/* ============================================
   MESSAGE BUBBLES
   ============================================ */

.message-bubble {
  max-width: 100%;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.message-bubble--bot {
  width: 100%;
  background: none;
  padding: 0;
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--bubble-bot-text);
}

.message-bubble--bot p {
  padding-left: 2px;
}

.message-bubble--user {
  max-width: clamp(85%, 70vw, 90%);
  background-color: var(--bubble-user-bg);
  padding: clamp(10px, 1.5vw, 12px) clamp(14px, 2vw, 16px);
  border-radius: var(--radius-xl) var(--radius-xl) var(--radius-xs) var(--radius-xl);
  font-size: var(--font-size-base);
  line-height: 1.55;
  color: var(--bubble-user-text);
}

/* ============================================
   MESSAGE ACTIONS
   ============================================ */

.message-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 4px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.message-wrapper:hover .message-actions {
  opacity: 1;
}

@media (max-width: 768px) {
  .message-actions {
    opacity: 0.5;
  }

  .message-wrapper:hover .message-actions {
    opacity: 1;
  }
}

.message-actions--bot {
  padding-left: 0;
}

.message-actions--user {
  padding-right: 0;
}

.message-actions__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--btn-icon-size-sm);
  height: var(--btn-icon-size-sm);
  border-radius: 50%;
  background-color: transparent;
  color: var(--message-actions-color);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.message-actions__btn:hover {
  background-color: var(--message-actions-hover-bg);
  color: var(--message-actions-hover-color);
}

/* ============================================
   MESSAGE AREA INPUT
   ============================================ */

.message-area-input {
  flex-shrink: 0;
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--main-max-desktop);
  padding: clamp(8px, 1.5vw, 12px) clamp(10px, 2vw, 16px);
  z-index: 50;
  background: linear-gradient(
    to top,
    var(--input-area-bg) 60%,
    rgba(255, 255, 255, 0.95) 80%,
    transparent 100%
  );
}

.message-area-input__wrapper {
  max-width: var(--main-max-desktop);
  margin: 0 auto;
  background-color: var(--input-wrapper-bg);
  border: 1px solid var(--input-wrapper-border);
  border-radius: var(--radius-input-desktop);
  box-shadow: var(--shadow-input);
  padding: 8px 10px 8px 16px;
  transition: box-shadow var(--transition-normal);
}

@media (max-width: 1024px) {
  .message-area-input {
    max-width: var(--main-max-tablet);
  }

  .message-area-input__wrapper {
    max-width: var(--main-max-tablet);
  }
}

@media (max-width: 768px) {
  .message-area-input {
    max-width: 100%;
  }

  .message-area-input__wrapper {
    border-radius: var(--radius-input);
  }
}

/* ============================================
   TEXTAREA
   ============================================ */

.message-area-input__textarea {
  width: 100%;
  min-height: clamp(40px, 6vh, 45px);
  max-height: clamp(150px, 25vh, 200px);
  padding: 6px 4px;
  font-size: var(--font-size-base);
  line-height: 1.55;
  color: var(--input-textarea-color);
  background: none;
  border: none;
  outline: none;
  resize: none;
  overflow-y: auto;
  font-family: inherit;
  display: flex;
  align-items: center;
}

.message-area-input__textarea::placeholder {
  color: var(--input-placeholder-color);
  font-size: var(--font-size-base);
  line-height: 1.60;
}

/* ============================================
   TOOLBAR
   ============================================ */

.message-area-input__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.message-area-input__tools-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.message-area-input__tools-right {
  display: flex;
  align-items: center;
}

.message-area-input__tool-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--btn-icon-size-md);
  height: var(--btn-icon-size-md);
  border-radius: 50%;
  background-color: transparent;
  color: var(--tool-btn-color);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  flex-shrink: 0;
  gap: 0;
  border: 1px solid var(--tool-btn-border);
}

.message-area-input__tool-btn:hover {
  background-color: var(--tool-btn-hover-bg);
  color: var(--tool-btn-hover-color);
  border-color: var(--tool-btn-hover-border);
}

.message-area-input__tool-label {
  display: none;
  font-size: var(--font-size-xs);
  font-weight: 500;
  white-space: nowrap;
}

.message-area-input__tool-btn.active {
  background-color: var(--tool-btn-active-bg);
  color: var(--tool-btn-active-color);
  border-color: var(--tool-btn-active-border);
}

/* ============================================
   BOTÓN ENVIAR
   ============================================ */

.message-area-input__send-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--btn-icon-size-md);
  height: var(--btn-icon-size-md);
  border-radius: 50%;
  background-color: var(--send-btn-idle-bg);
  color: var(--send-btn-color);
  transition: background-color var(--transition-normal), transform var(--transition-fast);
  flex-shrink: 0;
}

.message-area-input__send-btn.has-text {
  background-color: var(--send-btn-active-bg);
}

/* ============================================
   TOOLBAR RESPONSIVE
   ============================================ */

@media (min-width: 769px) {
  .message-area-input__tool-btn--pill {
    width: auto;
    height: var(--btn-icon-size-md);
    border-radius: var(--radius-pill);
    padding: 0 14px 0 10px;
    gap: 6px;
  }

  .message-area-input__tool-label {
    display: inline;
  }
}

/* ============================================
   RESPONSIVE: Mobile
   ============================================ */

@media (max-width: 668px) {
  .messages-container {
    gap: clamp(14px, 3vw, 20px);
    padding: 16px 18px;
    padding-bottom: calc(clamp(90px, 16vh, 130px) + 12px);
  }

  .message-bubble--bot {
    padding-left: 0;
  }

  .message-bubble--user {
    max-width: clamp(85%, 75vw, 90%);
    padding: 10px 14px;
    border-radius: var(--radius-lg) var(--radius-lg) var(--radius-xs) var(--radius-lg);
  }

  .message-area-input {
    padding: 8px 10px 12px;
  }

  .message-area-input__wrapper {
    border-radius: var(--radius-input);
    padding: 6px 8px 6px 12px;
  }

  .message-area-input__textarea {
    min-height: clamp(38px, 5.5vh, 40px);
  }
}

/* ============================================
   UTILIDADES DE ACCESIBILIDAD
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}