:root {
  --color-page-bg: #c4eeff;
  --color-title: #3a2d52;
  --color-title-muted: rgba(58, 45, 82, 0.72);
  --color-title-shadow: rgba(58, 45, 82, 0.08);

  --color-btn-bg: #ffffff;
  --color-btn-text: #3a2d52;
  --color-btn-description: rgba(58, 45, 82, 0.68);
  --color-btn-border: rgba(58, 45, 82, 0.08);
  --color-btn-shadow: rgba(58, 45, 82, 0.14);
  --color-btn-hover-bg: #ffffff;
  --color-btn-hover-shadow: rgba(58, 45, 82, 0.2);

  --font-body: system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: system-ui, -apple-system, "Segoe UI", sans-serif;

  --page-min-height: 100dvh;
  --page-overflow: auto;

  --container-max-width: 400px;
  --container-padding: 32px 20px 40px;

  --logo-margin-bottom: 32px;
  --avatar-size: 240px;
  --avatar-margin-top: 0px;

  --buttons-gap: 14px;
  --btn-width: 100%;
  --btn-max-width: 300px;
  --btn-padding: 16px 20px;
  --btn-radius: 25px;
  --btn-font-size: 20px;
  --btn-font-weight: 700;
  --btn-icon-gap: 12px;
  --btn-icon-size: 38px;
  --btn-shadow-x: 0;
  --btn-shadow-y: 4px;
  --btn-shadow-blur: 14px;
  --btn-hover-translate-y: -2px;
  --btn-hover-shadow-y: 6px;
  --btn-hover-shadow-blur: 18px;
  --btn-transition: 0.15s;

  --mobile-breakpoint: 480px;
  --mobile-container-padding: 28px 16px 36px;
  --mobile-btn-max-width: 100%;
  --mobile-btn-padding: 15px 18px;
  --mobile-btn-font-size: 18px;
  --mobile-avatar-size: 210px;
}

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

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

body {
  font-family: var(--font-body);
  min-height: var(--page-min-height);
  color: var(--color-title);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  overflow-y: var(--page-overflow);
  background-color: var(--color-page-bg);
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom)
    env(safe-area-inset-left);
}

.container {
  text-align: center;
  width: 100%;
  max-width: var(--container-max-width);
  padding: var(--container-padding);
  margin: 0 auto;
}

.profile {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.logo {
  margin-bottom: var(--logo-margin-bottom);
}

.avatar img {
  width: var(--avatar-size);
  height: auto;
  margin-top: var(--avatar-margin-top);
  object-fit: contain;
  display: block;
}

.buttons {
  display: flex;
  flex-direction: column;
  gap: var(--buttons-gap);
  align-items: center;
  width: 100%;
}

.btn {
  position: relative;
  display: block;
  width: var(--btn-width);
  max-width: var(--btn-max-width);
  padding: var(--btn-padding);
  border-radius: var(--btn-radius);
  text-decoration: none;
  transition:
    transform var(--btn-transition) ease,
    box-shadow var(--btn-transition) ease,
    background-color var(--btn-transition) ease;
  border: 1px solid var(--color-btn-border);
  min-height: 44px;
  background: var(--color-btn-bg);
  color: var(--color-btn-text);
  box-shadow: var(--btn-shadow-x) var(--btn-shadow-y) var(--btn-shadow-blur) var(--color-btn-shadow);
}

.btn__row {
  display: block;
  position: relative;
  width: 100%;
  min-height: var(--btn-icon-size);
}

.btn__text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  pointer-events: none;
}

.btn__label {
  font-family: var(--font-display);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  line-height: 1.2;
  color: var(--color-btn-text);
}

.btn__description {
  font-family: var(--font-body);
  font-size: 0.72em;
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-btn-description);
  margin-top: 2px;
}

.btn-icon {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  z-index: 1;
}

.btn-icon img {
  width: var(--btn-link-icon-size, var(--btn-icon-size));
  height: var(--btn-link-icon-size, var(--btn-icon-size));
  object-fit: contain;
}

@media (hover: hover) {
  .btn:hover {
    transform: translateY(var(--btn-hover-translate-y));
    background: var(--color-btn-hover-bg);
    box-shadow: var(--btn-shadow-x) var(--btn-hover-shadow-y) var(--btn-hover-shadow-blur)
      var(--color-btn-hover-shadow);
  }
}

.btn:focus-visible {
  outline: 3px solid var(--color-title);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .btn {
    transition: none;
  }

  .btn:hover {
    transform: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding: var(--mobile-container-padding);
  }

  .btn {
    max-width: var(--mobile-btn-max-width);
    padding: var(--mobile-btn-padding);
  }

  .btn__label {
    font-size: var(--mobile-btn-font-size);
  }

  .avatar img {
    width: var(--mobile-avatar-size);
  }
}