/* Базовые стили */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --fg: #ffffff;
  --fg-dim: rgba(255, 255, 255, 0.8);
  --border: rgba(255, 255, 255, 0.5);
  --glass: rgba(0, 0, 0, 0.3);
  --shadow: rgba(0, 0, 0, 0.8);
}

html, body {
  height: 100%;
}

body {
  width: 100vw;
  height: 100vh;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow-x: hidden;
}

.container {
  width: min(420px, 94vw);
  min-width: 280px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 0 30px var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border-radius: 20px;
  border: 3px solid var(--border);
  padding: clamp(15px, 4vw, 28px) clamp(12px, 4vw, 24px);
  margin: 10px;
}

h2 {
  color: var(--fg);
  font-size: clamp(20px, 5vw, 34px);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: clamp(8px, 2vw, 14px) 0 clamp(6px, 1.5vw, 10px);
  text-align: center;
  word-break: break-word;
}

form { 
  width: 100%; 
}

.form-group {
  position: relative;
  width: 100%;
  margin: clamp(16px, 4vw, 26px) 0;
  border-bottom: 2.5px solid var(--fg);
}

.form-group input {
  width: 100%;
  height: clamp(44px, 10vw, 52px);
  padding: 0 clamp(36px, 8vw, 40px) 0 clamp(10px, 3vw, 12px);
  font-size: clamp(0.95rem, 3vw, 1.05rem);
  background: transparent;
  border: none;
  outline: none;
  color: var(--fg);
}

.form-group label {
  position: absolute;
  top: 50%;
  left: clamp(10px, 3vw, 12px);
  transform: translateY(-50%);
  font-size: clamp(0.95rem, 3vw, 1.05rem);
  color: var(--fg);
  opacity: 0.9;
  transition: 0.25s ease;
  pointer-events: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: calc(100% - 40px);
}

/* Плавающий лейбл */
.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label {
  top: -6px;
  font-size: clamp(0.75rem, 2.5vw, 0.85rem);
  opacity: 0.85;
}

.form-group i {
  position: absolute;
  top: 50%;
  right: clamp(8px, 2vw, 10px);
  transform: translateY(-50%);
  color: var(--fg);
  font-size: clamp(1rem, 3vw, 1.1rem);
}

p {
  text-align: center;
  color: var(--fg);
  margin: clamp(8px, 2vw, 12px) 0 0;
  font-size: clamp(0.9rem, 3vw, 1rem);
  line-height: 1.4;
  padding: 0 5px;
}

p > a.link {
  color: var(--fg);
  font-weight: 700;
  text-decoration: none;
  font-size: inherit;
}

p > a.link:hover {
  text-decoration: underline;
  font-style: italic;
}

#btn {
  width: 100%;
  height: clamp(44px, 10vw, 50px);
  border-radius: 40px;
  border: none;
  font-size: clamp(1rem, 3vw, 1.1rem);
  text-transform: uppercase;
  font-weight: 700;
  margin: clamp(4px, 1vw, 6px) 0 clamp(8px, 2vw, 12px);
  cursor: pointer;
  transition: transform 0.08s ease, background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

#btn:hover {
  background: var(--glass);
  color: var(--fg);
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
}

#btn:active {
  transform: translateY(1px);
}

/* Специальные стили для очень маленьких экранов */
@media (max-width: 360px) {
  .form-group input { 
    font-size: 0.9rem; 
  }
  
  .form-group label { 
    font-size: 0.9rem; 
  }
  
  h2 {
    font-size: 18px;
    letter-spacing: 0.04em;
  }
  
  .container {
    padding: 12px 10px;
    border-radius: 16px;
    border-width: 2px;
  }
  
  .form-group {
    margin: 14px 0;
  }
}

/* Стили для портретной ориентации на мобильных устройствах */
@media (max-height: 600px) and (orientation: portrait) {
  body {
    padding: 10px;
    align-items: flex-start;
    justify-content: flex-start;
    min-height: 100vh;
    overflow-y: auto;
  }
  
  .container {
    margin-top: 20px;
    margin-bottom: 20px;
  }
  
  .form-group {
    margin: 12px 0;
  }
  
  .form-group input {
    height: 42px;
  }
}

/* Стили для горизонтальной ориентации на мобильных устройствах */
@media (max-width: 768px) and (orientation: landscape) {
  body {
    padding: 10px;
  }
  
  .container {
    max-height: 90vh;
    overflow-y: auto;
    margin: 10px 0;
  }
  
  .form-group {
    margin: 14px 0;
  }
  
  .form-group input {
    height: 42px;
  }
  
  h2 {
    padding: 8px 0 6px;
  }
}

/* Стили для очень маленьких экранов смартфонов */
@media (max-width: 320px) {
  .container {
    width: 96vw;
    min-width: 260px;
    padding: 10px 8px;
    border-radius: 14px;
  }
  
  h2 {
    font-size: 17px;
    padding: 6px 0 4px;
  }
  
  .form-group input {
    height: 40px;
    padding: 0 34px 0 8px;
  }
  
  .form-group label {
    left: 8px;
  }
  
  .form-group i {
    right: 6px;
    font-size: 0.9rem;
  }
  
  #btn {
    height: 42px;
    font-size: 0.95rem;
  }
  
  p {
    font-size: 0.85rem;
  }
}

/* Поддержка устройств с очень маленькой высотой */
@media (max-height: 500px) {
  body {
    align-items: flex-start;
    padding-top: 10px;
  }
  
  .container {
    margin-top: 5px;
    max-height: 95vh;
    overflow-y: auto;
  }
}

/* Улучшение для устройств с поддержкой hover (не сенсорных) */
@media (hover: hover) and (pointer: fine) {
  #btn:hover {
    background: var(--glass);
    color: var(--fg);
    box-shadow: 0 6px 18px rgba(0,0,0,0.35);
  }
  
  p > a.link:hover {
    text-decoration: underline;
    font-style: italic;
  }
}

/* Для сенсорных устройств улучшаем target areas */
@media (pointer: coarse) {
  .form-group input {
    min-height: 48px;
  }
  
  #btn {
    min-height: 48px;
  }
  
  .form-group i {
    padding: 12px;
    margin-right: -12px;
  }
}
.form-group small {
  position: absolute;
  bottom: -20px;
  left: 0;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  width: 100%;
  transition: opacity 0.3s ease;
}

.form-group input:focus ~ small {
  opacity: 1;
}

.form-group input:not(:focus) ~ small {
  opacity: 0.7;
}

/* Форма подвала */
.form-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
}

/* Ссылка "Забыли пароль?" */
.forgot-password {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--fg-dim);
  text-decoration: none;
  font-size: clamp(0.85rem, 2.5vw, 0.95rem);
  transition: all 0.3s ease;
  padding: 6px 12px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.1);
}

.forgot-password:hover {
  color: var(--fg);
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  text-decoration: none;
}

.forgot-password i {
  font-size: 0.9em;
}

/* Модальное окно */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  padding: 20px;
  backdrop-filter: blur(5px);
  animation: fadeIn 0.3s ease;
}

.modal.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content {
  background: var(--glass);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  border: 2px solid var(--border);
  width: min(500px, 90vw);
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.4s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.modal-header h3 {
  color: var(--fg);
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-close {
  color: var(--fg-dim);
  font-size: 28px;
  cursor: pointer;
  transition: color 0.3s ease;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.modal-close:hover {
  color: var(--fg);
  background: rgba(255, 255, 255, 0.1);
}

.modal-body {
  padding: 25px;
}

.support-icon {
  text-align: center;
  font-size: 3rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 20px;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.modal-text {
  color: var(--fg);
  line-height: 1.6;
  margin-bottom: 25px;
  text-align: center;
}

.telegram-info {
  display: flex;
  align-items: center;
  gap: 15px;
  background: rgba(0, 136, 204, 0.2);
  padding: 20px;
  border-radius: 15px;
  margin-bottom: 20px;
  border: 1px solid rgba(0, 136, 204, 0.3);
  transition: transform 0.3s ease;
}

.telegram-info:hover {
  transform: translateY(-3px);
}

.telegram-info i.fa-telegram {
  font-size: 2.5rem;
  color: #0088cc;
}

.telegram-label {
  color: var(--fg-dim);
  font-size: 0.9rem;
  margin-bottom: 5px;
}

.telegram-link {
  color: var(--fg);
  font-size: 1.2rem;
  font-weight: bold;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.3s ease;
}

.telegram-link:hover {
  color: #0088cc;
}

.modal-tip {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: rgba(255, 193, 7, 0.1);
  padding: 15px;
  border-radius: 12px;
  border-left: 4px solid #ffc107;
}

.modal-tip i {
  color: #ffc107;
  font-size: 1.2rem;
  margin-top: 2px;
}

.modal-tip p {
  color: var(--fg);
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 0;
}

.modal-footer {
  display: flex;
  gap: 12px;
  padding: 15px 25px 25px;
}

.modal-btn {
  flex: 1;
  padding: 12px 20px;
  border-radius: 10px;
  border: none;
  background: rgba(255, 255, 255, 0.9);
  color: #000;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.95rem;
}

.modal-btn:hover {
  background: var(--fg);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.modal-btn.secondary {
  background: transparent;
  color: var(--fg);
  border: 2px solid var(--border);
}

.modal-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

:root {
  --success: #28a745;
}

/* Адаптивность модального окна */
@media (max-width: 600px) {
  .modal-content {
    width: 95vw;
    max-height: 95vh;
  }
  
  .modal-footer {
    flex-direction: column;
  }
  
  .modal-header h3 {
    font-size: 1.2rem;
  }
  
  .telegram-info {
    flex-direction: column;
    text-align: center;
    padding: 15px;
  }
  
  .support-icon {
    font-size: 2.5rem;
  }
}