/*
 * Base styles — reset, form controls, buttons, popup
 */

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg-mobile);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

figure {
  margin: 0;
}

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

h1,
h2,
h3,
p {
  margin: 0;
}

button,
input {
  font: inherit;
}

button {
  border: none;
  background: none;
  cursor: pointer;
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  width: 100%;
}

.field__label {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
}

.field__input {
  width: 100%;
  min-height: 48px;
  padding: 14px 16px;
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-input);
  background: var(--color-input-bg);
  color: var(--color-text);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.3;
  outline: none;
  transition: border-color 0.2s ease;
}

.field:focus-within .field__input {
  border-color: var(--color-input-border-focus);
}

.field--filled .field__input {
  border-color: var(--color-input-border);
}

.field--error .field__input,
.field--error:focus-within .field__input {
  border-color: var(--color-input-border-error);
}

.field__hint,
.field__error {
  display: none;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.3;
}

.field--with-hint:focus-within .field__hint {
  display: block;
  color: var(--color-hint);
}

.field--error .field__hint {
  display: none;
}

.field--error .field__error {
  display: block;
  color: var(--color-error);
}

@media (min-width: 768px) {
  .field--with-hint.field--filled .field__hint {
    display: block;
    color: var(--color-hint);
  }
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 48px;
  padding: 14px 20px;
  border-radius: var(--radius-button);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
  text-align: center;
  transition: opacity 0.2s ease;
}

.btn.is-loading {
  pointer-events: none;
  background: var(--color-button-disabled);
  color: #bfbfbf;
  opacity: 1;
}

.btn__loader {
  display: none;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
}

.btn__label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn.is-loading .btn__loader {
  display: inline-block;
  animation: btn-spin 0.8s linear infinite;
}

.btn:hover {
  opacity: 0.9;
}

.btn--primary {
  background: var(--color-button);
  color: #fff;
}

.btn--disabled,
.btn--primary:disabled {
  background: var(--color-button-disabled);
  cursor: not-allowed;
  opacity: 1;
}

.btn--disabled:hover,
.btn--primary:disabled:hover {
  opacity: 1;
}

.btn--text {
  background: transparent;
  color: var(--color-button);
  padding-inline: 19px 20px;
}

.btn--secondary {
  background: #ffffff;
  color: var(--color-text);
  border: 1px solid var(--color-input-border);
}

.btn--secondary:hover {
  background: #f9fafb;
  opacity: 1;
}

.btn--danger {
  background: #ec5b5b;
  color: #ffffff;
}

.btn--danger:hover {
  background: #e24c4c;
  opacity: 1;
}

.btn--danger:disabled,
.btn--danger.is-loading {
  background: #f3a8a8;
  cursor: wait;
  opacity: 1;
}

@keyframes btn-spin {
  to {
    transform: rotate(360deg);
  }
}

.popup {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-16);
}

.popup.is-open {
  display: flex;
}

.popup__backdrop {
  position: absolute;
  inset: 0;
  padding: 0;
  border: 0;
  background: rgb(44 48 56 / 40%);
  cursor: default;
}

.popup__dialog {
  position: relative;
  width: 100%;
  max-width: 343px;
  padding: var(--space-24);
  border-radius: var(--radius-input);
  background: #fff;
  text-align: center;
}

.popup__title {
  margin: 0 0 var(--space-12);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
}

.popup__text {
  margin: 0 0 var(--space-24);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-text);
}

.popup__btn {
  width: 100%;
}

.popup__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
  width: 100%;
}

.logout-modal__dialog {
  max-width: 360px;
  padding: var(--space-32) var(--space-24) var(--space-24);
  border-radius: 16px;
  text-align: center;
  box-shadow:
    0 24px 48px rgb(44 48 56 / 16%),
    0 8px 16px rgb(44 48 56 / 8%);
  animation: logout-modal-in 0.22s ease-out;
}

.logout-modal.is-open .popup__backdrop {
  animation: logout-backdrop-in 0.22s ease-out;
}

.logout-modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: var(--color-meta);
  background: transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.logout-modal__close:hover {
  color: var(--color-text);
  background: #f0f1f5;
}

.logout-modal__close:focus-visible {
  outline: 2px solid rgb(16 139 136 / 35%);
  outline-offset: 2px;
}

.logout-modal__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-16);
  border-radius: 50%;
  background: #fff0f0;
  color: #ec5b5b;
}

.logout-modal__title {
  margin: 0 0 var(--space-8);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

.logout-modal__text {
  margin: 0 0 var(--space-24);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.45;
  color: var(--color-meta);
}

.logout-modal__form {
  margin: 0;
}

.logout-modal__actions {
  display: flex;
  gap: var(--space-12);
  width: 100%;
}

.logout-modal__btn {
  flex: 1;
  min-height: 44px;
  font-size: 14px;
}

.logout-modal__btn.btn--secondary {
  font-weight: 600;
}

.logout-modal__btn.btn--danger {
  font-weight: 600;
}

@keyframes logout-modal-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.97);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes logout-backdrop-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

body.logout-modal-open {
  overflow: hidden;
}

body.logout-modal-open .popup__backdrop {
  backdrop-filter: blur(2px);
}

/* App shell — post-auth pages (profile, activities, …) */

.app-body {
  background: var(--color-bg-mobile);
  overflow-x: hidden;
}

.app-shell {
  min-height: 100vh;
  width: 100%;
  max-width: 100%;
  overflow-x: clip;
}

.app-shell__topbar {
  display: flex;
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: var(--app-chrome-z-top);
  box-sizing: border-box;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 100%;
  padding: max(8px, env(safe-area-inset-top, 0px)) 20px 8px;
  background: #ffffff;
  pointer-events: none;
}

.app-shell__sidebar {
  display: none;
}

.app-shell__body {
  box-sizing: border-box;
  min-width: 0;
  width: 100%;
  max-width: 100%;
  padding-top: calc(var(--app-topbar-offset-mobile) + env(safe-area-inset-top, 0px));
}

.app-shell__content {
  box-sizing: border-box;
  width: 100%;
  max-width: var(--content-viewport-mobile);
  margin: 0 auto;
  padding: var(--space-16);
  padding-left: max(var(--page-inline), env(safe-area-inset-left, 0px));
  padding-right: max(var(--page-inline), env(safe-area-inset-right, 0px));
  padding-bottom: calc(var(--tabbar-height) + var(--space-16) + env(safe-area-inset-bottom, 0px));
}

.app-shell__content--profile,
.app-shell__content--activities,
.app-shell__content--create-activity,
.app-shell__content--edit-post {
  padding-bottom: calc(var(--profile-scroll-padding-bottom) + env(safe-area-inset-bottom, 0px));
}

/* Form / sheet pages: keep horizontal gutter even when page CSS zeros padding. */
@media (max-width: 1279px) {
  .app-shell .app-shell__content.app-shell__content--create-post,
  .app-shell .app-shell__content.app-shell__content--create-activity,
  .app-shell .app-shell__content.app-shell__content--edit-post,
  .app-shell .app-shell__content.app-shell__content--notifications,
  .app-shell .app-shell__content.app-shell__content--activity-participants,
  .app-shell .app-shell__content.app-shell__content--activity-detail {
    padding-left: max(var(--page-inline), env(safe-area-inset-left, 0px)) !important;
    padding-right: max(var(--page-inline), env(safe-area-inset-right, 0px)) !important;
  }

  /* Feeds keep full-bleed media; gutters live on card sections. */
  .app-shell .app-shell__content.app-shell__content--posts,
  .app-shell .app-shell__content.app-shell__content--activities {
    padding-left: 0;
    padding-right: 0;
  }
}

@media (max-width: 767px) {
  :root {
    --app-topbar-bar-height: 56px;
    --app-topbar-offset-mobile: calc(var(--app-topbar-bar-height) + 8px);
  }

  body,
  .app-body {
    background: #ffffff;
  }

  .app-shell__topbar {
    align-items: stretch;
    padding: env(safe-area-inset-top, 0px) 0 0;
    background: #ffffff;
  }

  .app-shell__content--posts {
    padding-top: 4px;
    background: #ffffff;
  }
}

@media (min-width: 768px) {
  body.app-body {
    background: var(--color-bg-tablet);
  }

  .app-shell__content {
    max-width: var(--content-tablet);
  }
}

@media (min-width: 1280px) {
  body.app-body {
    background: var(--color-bg-desktop);
  }

  .app-shell__topbar {
    padding: max(20px, env(safe-area-inset-top, 0px)) 20px 0;
    background: transparent;
  }

  .app-shell__sidebar {
    display: block;
    position: fixed;
    top: calc(var(--app-topbar-offset-desktop) + env(safe-area-inset-top, 0px));
    bottom: 0;
    left: 0;
    z-index: var(--app-chrome-z-side);
    box-sizing: border-box;
    width: var(--sidebar-width);
    padding: 45px 0 32px 20px;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  /* width already accounts for sidebar — do not also use margin-left + width:100% */
  .app-shell__body {
    width: calc(100% - var(--sidebar-width));
    max-width: calc(100% - var(--sidebar-width));
    margin-left: var(--sidebar-width);
    padding: calc(var(--app-topbar-offset-desktop) + env(safe-area-inset-top, 0px)) 24px 32px 0;
  }

  .app-shell__content {
    padding: 0;
    padding-bottom: 0;
    max-width: var(--content-max-profile);
  }
}

/* Shared cropped avatar image (profile, posts, comments) */
.avatar-render__image {
  position: absolute;
  display: block;
  inset: auto;
  right: auto;
  bottom: auto;
  max-width: none;
  max-height: none;
  border-radius: 0;
  object-fit: initial;
  object-position: initial;
  pointer-events: none;
}

.profile__avatar-shell .profile__avatar.avatar-render__image,
.posts__card-author-avatar-shell .posts__card-author-avatar.avatar-render__image,
.posts__card-comment-avatar-shell .posts__card-comment-avatar.avatar-render__image,
.posts__card-comment-composer-avatar-shell .posts__card-comment-composer-avatar-image.avatar-render__image {
  inset: auto;
  top: auto;
  left: auto;
  right: auto;
  bottom: auto;
  width: auto;
  height: auto;
  object-fit: initial;
  object-position: initial;
  border-radius: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}