/* =============================================================================
   PSTU Conference Platform — Forms (регистрация)
   Дополняет компоненты из components.css (.form-*, .alert)
   ============================================================================= */

@import './variables.css';

/* -----------------------------------------------------------------------------
   Секция регистрации
----------------------------------------------------------------------------- */

.registration-section .section__header {
  margin-bottom: clamp(1.75rem, 4vw, 2.5rem);
}

.registration {
  max-width: 800px;
  margin-inline: auto;
}

.registration--tabs {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* Две панели: активная в потоке, неактивная перекрывается (fade) */
.registration__panels {
  position: relative;
  min-height: 12rem;
}

.registration__panel {
  width: 100%;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.28s ease,
    visibility 0.28s ease;
}

.registration__panel--active {
  position: relative;
  z-index: 1;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.registration__panel:not(.registration__panel--active) {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 0;
  overflow: hidden;
}

/* -----------------------------------------------------------------------------
   Табы «Слушатель» / «Докладчик»
----------------------------------------------------------------------------- */

.registration__tabs {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-1);
  border-radius: var(--radius-md);
  background-color: var(--color-gray-100);
  border: 1px solid var(--color-gray-200);
}

.registration__tab {
  flex: 1;
  cursor: pointer;
  font-family: var(--font-family);
  font-size: var(--text-small);
  font-weight: var(--font-semibold);
  padding: 0.65rem 1rem;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-gray-600);
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.registration__tab:hover:not([aria-selected="true"]) {
  color: var(--color-text);
  background-color: rgba(15, 60, 115, 0.06);
}

.registration__tab:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

.registration__tab[aria-selected="true"] {
  background-color: var(--color-white);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}


.registration__placeholder {
  margin: 0;
  padding: var(--space-6);
  text-align: center;
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-gray-300);
  background-color: var(--color-gray-100);
}

/* -----------------------------------------------------------------------------
   Оболочка формы + алерт
----------------------------------------------------------------------------- */

.registration__shell {
  position: relative;
}

.registration__alert {
  margin-bottom: var(--space-4);
}

.registration__alert[hidden] {
  display: none !important;
}

/* -----------------------------------------------------------------------------
   Сетка формы: 2 колонки → 1
----------------------------------------------------------------------------- */

.registration-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 640px) {
  .registration-form .form-row {
    grid-template-columns: 1fr;
  }
}

/* -----------------------------------------------------------------------------
   Fields: radio row, fieldset
----------------------------------------------------------------------------- */

.form-fieldset {
  margin: 0;
  padding: 0;
  border: none;
  min-width: 0;
}

.form-fieldset .form-label {
  margin-bottom: var(--space-3);
}

.form-radio-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

/* -----------------------------------------------------------------------------
   Блок «Проживание и логистика»
----------------------------------------------------------------------------- */

.registration-form__divider {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 var(--space-6);
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
  border-top: 1px solid var(--color-gray-200);
}

.registration-form__divider--spaced {
  margin-top: clamp(2rem, 5vw, 2.75rem);
}

.registration-form__block-title {
  margin: 0;
  font-size: var(--text-h3);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  letter-spacing: var(--tracking-tight);
}

/* -----------------------------------------------------------------------------
   Условный блок дат гостиницы
----------------------------------------------------------------------------- */

.registration-form__hotel-dates {
  overflow: hidden;
}

.registration-form__hotel-dates[hidden] {
  display: none !important;
}

.registration-form__hotel-dates-inner {
  padding-bottom: var(--space-4);
}

/* -----------------------------------------------------------------------------
   Ссылки, капча, отправка
----------------------------------------------------------------------------- */

.registration-form__link {
  color: var(--color-primary);
  font-weight: var(--font-medium);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.registration-form__link:hover {
  color: var(--color-primary-light);
}

.registration-form__captcha .form-label {
  margin-bottom: var(--space-2);
}

.registration-form__smartcaptcha {
  min-height: 100px;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--color-gray-300);
  background-color: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.registration-form__smartcaptcha:empty::after {
  content: 'SmartCaptcha';
  font-size: var(--text-tiny);
  font-weight: var(--font-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gray-400);
}

.registration-form__smartcaptcha:not(:empty)::after {
  display: none;
}

.registration-form__submit-wrap {
  margin-top: var(--space-2);
}

.registration-form__submit-wrap .btn {
  position: relative;
}

/* -----------------------------------------------------------------------------
   Состояния формы
----------------------------------------------------------------------------- */

.registration-form__body[hidden] {
  display: none !important;
}

.registration-form[data-form-state="loading"] .registration-form__body:not([hidden]) {
  pointer-events: none;
  opacity: 0.65;
}

.registration-form__success {
  text-align: center;
  padding: clamp(2rem, 5vw, 3rem) var(--space-4);
}

.registration-form__success[hidden] {
  display: none !important;
}

.registration-form__success-icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-6);
}

.registration-form__success-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-h3);
  font-weight: var(--font-bold);
  color: var(--color-success);
}

.registration-form__success-text {
  margin: 0 0 var(--space-8);
  font-size: var(--text-body);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

/* Анимация галочки (запуск при показе успеха) */
.registration-checkmark__circle {
  stroke: var(--color-success);
  stroke-width: 2;
  stroke-dasharray: 151;
  stroke-dashoffset: 151;
  transform-origin: center;
}

.registration-checkmark__check {
  stroke: var(--color-success);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 36;
  stroke-dashoffset: 36;
}

.registration-form__success--animate .registration-checkmark__circle {
  animation: registrationCheckCircle 0.55s ease-out forwards;
}

.registration-form__success--animate .registration-checkmark__check {
  animation: registrationCheckDraw 0.45s 0.45s ease-out forwards;
}

@keyframes registrationCheckCircle {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes registrationCheckDraw {
  to {
    stroke-dashoffset: 0;
  }
}

/* -----------------------------------------------------------------------------
   Прогресс загрузки (XHR, форма докладчика)
----------------------------------------------------------------------------- */

.registration-form__upload-progress {
  margin-bottom: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-100);
}

.registration-form__upload-progress[hidden] {
  display: none !important;
}

.registration-form__upload-progress-track {
  height: 6px;
  border-radius: var(--radius-full);
  background-color: var(--color-gray-200);
  overflow: hidden;
  margin-bottom: var(--space-2);
}

.registration-form__upload-progress-bar {
  height: 100%;
  width: 0%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transition: width 0.12s ease-out;
}

.registration-form__upload-progress-text {
  margin: 0;
  font-size: var(--text-small);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
}

/* -----------------------------------------------------------------------------
   Зона файла .DOCX
----------------------------------------------------------------------------- */

.file-upload-zone {
  position: relative;
  border: 2px dashed var(--color-gray-300);
  border-radius: var(--radius-md);
  padding: var(--space-8) var(--space-4);
  text-align: center;
  cursor: pointer;
  background-color: var(--color-gray-100);
  transition:
    border-color var(--transition-base),
    background-color var(--transition-base),
    box-shadow var(--transition-base);
}

.file-upload-zone:hover:not(.file-upload-zone--error):not(.file-upload-zone--uploading) {
  border-color: var(--color-gray-400);
  background-color: var(--color-white);
}

.file-upload-zone:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

.file-upload-zone--drag {
  border-color: var(--color-primary) !important;
  background-color: rgba(15, 60, 115, 0.06) !important;
}

.file-upload-zone--selected {
  border-style: solid;
  border-color: var(--color-success);
  background-color: rgba(34, 197, 94, 0.06);
}

.file-upload-zone--error {
  border-color: var(--color-error);
  border-style: solid;
  background-color: rgba(239, 68, 68, 0.05);
}

.file-upload-zone--uploading {
  pointer-events: none;
  border-style: solid;
  border-color: var(--color-primary-light);
}

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

.file-upload-zone__title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-body);
  font-weight: var(--font-semibold);
  color: var(--color-text);
}

.file-upload-zone__sub {
  margin: 0 0 var(--space-2);
  font-size: var(--text-small);
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.file-upload-zone__hint {
  margin: 0;
  font-size: var(--text-tiny);
  color: var(--color-gray-500);
}

.file-upload-zone__icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-3);
  color: var(--color-gray-400);
}

.file-upload-zone__selected {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  text-align: left;
}

.file-upload-zone__word-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: linear-gradient(145deg, #185abd, #2b7ce8);
  color: var(--color-white);
  font-weight: var(--font-black);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-upload-zone__file-meta {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.file-upload-zone__name {
  font-size: var(--text-small);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  word-break: break-word;
}

.file-upload-zone__size {
  font-size: var(--text-tiny);
  color: var(--color-gray-500);
}

.file-upload-zone__local-bar {
  height: 4px;
  border-radius: var(--radius-full);
  background-color: var(--color-gray-200);
  overflow: hidden;
  margin-bottom: var(--space-2);
}

.file-upload-zone__local-bar span {
  display: block;
  height: 100%;
  width: 0%;
  background-color: var(--color-primary);
  transition: width 0.1s linear;
}

.file-upload-zone__error {
  margin-top: var(--space-3);
  margin-bottom: 0;
  justify-content: center;
}

.file-upload-zone__error[hidden] {
  display: none !important;
}

/* -----------------------------------------------------------------------------
   Соавторы
----------------------------------------------------------------------------- */

.coauthors {
  margin-bottom: var(--space-4);
}

.coauthors__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.coauthor-row {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-100);
}

.coauthor-row__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.coauthor-row__title {
  font-size: var(--text-tiny);
  font-weight: var(--font-bold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gray-500);
}

.coauthor-row__error {
  margin-top: var(--space-1);
}