:root {
  --color-primary: #8774e1;
  --color-primary-shade: #7565c7;
  --color-background: #212121;
  --color-background-secondary: #181818;
  --color-text: #ffffff;
  --color-text-secondary: #aaaaaa;
  --color-borders-input: #3c3c3c;
  --border-radius-default: 0.75rem;
  --border-radius-button: 0.75rem;
}

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

html, body {
  height: 100%;
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: 'Roboto', sans-serif;
  -webkit-font-smoothing: antialiased;
}

#root {
  height: 100%;
  overflow-y: auto;
}

.auth-form {
  width: 100%;
  max-width: 25.5rem;
  margin: 0 auto;
  padding: 6rem 1rem 1rem;
  text-align: center;
}

.auth-form.hidden {
  display: none;
}

#logo {
  display: block;
  width: 10rem;
  height: 10rem;
  margin: 0 auto 2.5rem;
  background: url(telegram-logo.svg) center no-repeat;
  background-size: 100%;
}

#logo-small {
  display: block;
  width: 6rem;
  height: 6rem;
  margin: 0 auto 1.5rem;
  background: url(telegram-logo.svg) center no-repeat;
  background-size: 100%;
}

.auth-form h1 {
  font-size: 2rem;
  font-weight: 500;
  line-height: 1.5;
  margin-bottom: 0.5rem;
}

.auth-form .note {
  margin-bottom: 3rem;
  font-size: 1rem;
  line-height: 1.35;
  color: var(--color-text-secondary);
}

.form {
  text-align: left;
}

/* Input Group */
.input-group {
  position: relative;
  margin-bottom: 1.5rem;
}

.form-control {
  width: 100%;
  height: 3.375rem;
  padding: 1.5rem 0.75rem 0.375rem;
  border: 2px solid transparent;
  border-radius: var(--border-radius-default);
  background-color: var(--color-background-secondary);
  color: var(--color-text);
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, background-color 0.15s;
}

.form-control:focus {
  border-color: var(--color-primary);
  background-color: var(--color-background);
}

.input-group label {
  position: absolute;
  left: 0.75rem;
  top: 1rem;
  font-size: 1rem;
  color: var(--color-text-secondary);
  pointer-events: none;
  transition: all 0.15s;
}

.form-control:focus + label,
.form-control:not(:placeholder-shown) + label {
  top: 0.375rem;
  font-size: 0.75rem;
  color: var(--color-primary);
}

/* Country Input */
.country-input {
  cursor: pointer;
}

.country-input .form-control {
  cursor: pointer;
  padding-right: 2.5rem;
}

.css-icon-down {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 0.75rem;
  height: 0.75rem;
  border: 2px solid var(--color-text-secondary);
  border-top: 0;
  border-left: 0;
  transform: rotate(45deg);
  transition: transform 0.2s, top 0.2s;
}

.country-input.open .css-icon-down {
  top: 1.3rem;
  transform: rotate(-135deg);
  border-color: var(--color-primary);
}

.country-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 20rem;
  margin-top: 0.25rem;
  padding: 0.5rem 0;
  border-radius: var(--border-radius-default);
  background-color: var(--color-background-secondary);
  box-shadow: 0 0.25rem 0.5rem rgba(0,0,0,0.3);
  overflow-y: auto;
  z-index: 100;
  display: none;
}

.country-input.open .country-menu {
  display: block;
}

.country-item {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  cursor: pointer;
  transition: background-color 0.15s;
}

.country-item:hover {
  background-color: rgba(255,255,255,0.05);
}

.country-flag {
  font-size: 1.75rem;
  margin-right: 1rem;
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
}

.country-flag img.emoji {
  width: 1.75rem;
  height: 1.75rem;
  vertical-align: middle;
}

.country-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.country-code {
  color: var(--color-text-secondary);
  margin-left: auto;
}

/* Phone Input */
.phone-input .form-control {
  padding-left: 3.5rem;
}

.phone-input label {
  left: 3.5rem;
}

.phone-input .form-control:focus + label,
.phone-input .form-control:not(:placeholder-shown) + label {
  left: 0.75rem;
}

.phone-code {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text);
  font-size: 1rem;
}

/* Code Input */
.code-field {
  text-align: center;
  font-size: 1.25rem;
  letter-spacing: 0.25rem;
}

/* Password Input */
.password-input .form-control {
  padding-right: 3rem;
}

.toggle-password {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 0.25rem;
}

.toggle-password:hover {
  color: var(--color-text);
}

/* Checkbox */
.checkbox-row {
  margin-bottom: 1.5rem;
}

.Checkbox {
  cursor: pointer;
  display: flex;
  align-items: center;
}

.Checkbox input {
  position: absolute;
  opacity: 0;
}

.Checkbox .Checkbox-main {
  display: flex;
  align-items: center;
  padding-left: 2.25rem;
  position: relative;
}

.Checkbox .Checkbox-main::before,
.Checkbox .Checkbox-main::after {
  content: "";
  position: absolute;
  left: 0;
  width: 1.25rem;
  height: 1.25rem;
}

.Checkbox .Checkbox-main::before {
  border: 2px solid var(--color-borders-input);
  border-radius: 0.25rem;
  background-color: var(--color-background);
  transition: border-color 0.1s, background-color 0.1s;
}

.Checkbox .Checkbox-main::after {
  font-family: sans-serif;
  content: "\2713";
  font-size: 0.875rem;
  color: white;
  text-align: center;
  line-height: 1.25rem;
  opacity: 0;
  transition: opacity 0.1s;
}

.Checkbox input:checked + .Checkbox-main::before {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}

.Checkbox input:checked + .Checkbox-main::after {
  opacity: 1;
}

.Checkbox .label {
  font-size: 0.9375rem;
  color: var(--color-text);
}

/* Button */
.Button {
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 3.375rem;
  padding: 0.625rem;
  border: 0;
  border-radius: var(--border-radius-button);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  text-transform: uppercase;
  outline: none;
  transition: background-color 0.2s, opacity 0.2s;
}

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

.Button.primary:hover {
  background-color: var(--color-primary-shade);
}

.Button.primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.Button.text {
  background: transparent;
  height: auto;
  padding: 0.75rem;
}

.Button.text.primary {
  color: var(--color-primary);
}

.Button.text.primary:hover {
  background-color: rgba(135, 116, 225, 0.08);
}

/* Auth Links */
.auth-links {
  margin-top: 2rem;
  text-align: center;
}

/* Lock Icon */
.lock-icon {
  margin-bottom: 1.5rem;
}

/* Success */
.success-icon {
  margin-bottom: 1.5rem;
}

.success-title {
  color: #4caf50 !important;
}

/* Loading */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(33, 33, 33, 0.9);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.loading-overlay.active {
  display: flex;
}

.Spinner {
  --spinner-size: 2.75rem;
  position: relative;
  width: var(--spinner-size);
  height: var(--spinner-size);
}

.Spinner__inner {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 3px solid rgba(255,255,255,0.1);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Notification/Toast */
.Notification {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.9375rem 1.25rem;
  border-radius: var(--border-radius-default);
  background-color: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.9375rem;
  display: none;
  z-index: 1001;
  backdrop-filter: blur(0.5rem);
}

.Notification.active {
  display: block;
  animation: slideUp 0.3s ease;
}

.Notification.error {
  background-color: rgba(244, 67, 54, 0.9);
}

@keyframes slideUp {
  from { opacity: 0; transform: translateX(-50%) translateY(1rem); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.2);
  border-radius: 3px;
}

/* Mobile */
@media (max-width: 600px) {
  .auth-form {
    padding: 4rem 1rem 1rem;
  }
  
  #logo {
    width: 7.5rem;
    height: 7.5rem;
    margin-bottom: 1.75rem;
  }
  
  .auth-form h1 {
    font-size: 1.25rem;
  }
  
  .auth-form .note {
    font-size: 0.875rem;
    margin-bottom: 2.5rem;
  }
}