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

/* Светлая тема (по умолчанию) */
:root {
  --bg-page: #e8eae9;
  --bg-card: #fff;
  --blob-1: rgba(180, 200, 255, 0.45);
  --blob-2: rgba(200, 180, 255, 0.4);
  --blob-3: rgba(180, 230, 255, 0.35);
  --blob-4: rgba(220, 220, 240, 0.4);
  --bubble-1: rgba(255, 255, 255, 0.55);
  --bubble-2: rgba(180, 200, 255, 0.38);
  --bubble-3: rgba(200, 180, 255, 0.34);
  --bubble-stroke: rgba(255, 255, 255, 0.45);
  --bubble-shadow: rgba(0, 0, 0, 0.08);
  --bubble-word-color: rgba(0, 0, 0, 0.78);
  --text: #1a1a1a;
  --text-muted: #2d2d2d;
  --border: #e0e0e0;
  --photo-bg: #e8e8e8;
  --photo-border: #f0f0f0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 12px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-photo: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-link-hover: 0 4px 12px rgba(0, 0, 0, 0.12);
  --spoiler-bg: #252525;
  --spoiler-border: rgba(0, 0, 0, 0.15);
  --link-hover-bg: #1a1a1a;
  --link-hover-text: #fff;
  --focus-ring: #1a1a1a;
  --toggle-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%231a1a1a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='5'/%3E%3Cline x1='12' y1='1' x2='12' y2='3'/%3E%3Cline x1='12' y1='21' x2='12' y2='23'/%3E%3Cline x1='4.22' y1='4.22' x2='5.64' y2='5.64'/%3E%3Cline x1='18.36' y1='18.36' x2='19.78' y2='19.78'/%3E%3Cline x1='1' y1='12' x2='3' y2='12'/%3E%3Cline x1='21' y1='12' x2='23' y2='12'/%3E%3Cline x1='4.22' y1='19.78' x2='5.64' y2='18.36'/%3E%3Cline x1='18.36' y1='5.64' x2='19.78' y2='4.22'/%3E%3C/svg%3E");
}

/* Тёмная тема */
[data-theme="dark"],
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-page: #12121a;
    --bg-card: #252525;
    --blob-1: rgba(60, 50, 120, 0.35);
    --blob-2: rgba(80, 40, 100, 0.3);
    --blob-3: rgba(40, 70, 120, 0.3);
    --blob-4: rgba(90, 50, 130, 0.25);
    --bubble-1: rgba(255, 255, 255, 0.14);
    --bubble-2: rgba(120, 160, 255, 0.16);
    --bubble-3: rgba(200, 140, 255, 0.14);
    --bubble-stroke: rgba(255, 255, 255, 0.12);
    --bubble-shadow: rgba(0, 0, 0, 0.35);
    --bubble-word-color: rgba(255, 255, 255, 0.9);
    --text: #f0f0f0;
    --text-muted: #c8c8c8;
    --border: #404040;
    --photo-bg: #333;
    --photo-border: #404040;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 2px 12px rgba(0, 0, 0, 0.25), 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-photo: 0 2px 12px rgba(0, 0, 0, 0.3);
    --shadow-link-hover: 0 4px 16px rgba(0, 0, 0, 0.4);
    --spoiler-bg: #0d0d0d;
    --spoiler-border: rgba(255, 255, 255, 0.1);
    --link-hover-bg: #f0f0f0;
    --link-hover-text: #1a1a1a;
    --focus-ring: #f0f0f0;
    --toggle-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23f0f0f0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z'/%3E%3C/svg%3E");
  }
}

/* Ручная светлая тема переопределяет системную */
[data-theme="light"] {
  --bg-page: #e8eae9;
  --bg-card: #fff;
  --blob-1: rgba(180, 200, 255, 0.45);
  --blob-2: rgba(200, 180, 255, 0.4);
  --blob-3: rgba(180, 230, 255, 0.35);
  --blob-4: rgba(220, 220, 240, 0.4);
  --bubble-1: rgba(255, 255, 255, 0.55);
  --bubble-2: rgba(180, 200, 255, 0.38);
  --bubble-3: rgba(200, 180, 255, 0.34);
  --bubble-stroke: rgba(255, 255, 255, 0.45);
  --bubble-shadow: rgba(0, 0, 0, 0.08);
  --bubble-word-color: rgba(0, 0, 0, 0.78);
  --text: #1a1a1a;
  --text-muted: #2d2d2d;
  --border: #e0e0e0;
  --photo-bg: #e8e8e8;
  --photo-border: #f0f0f0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 12px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-photo: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-link-hover: 0 4px 12px rgba(0, 0, 0, 0.12);
  --spoiler-bg: #252525;
  --spoiler-border: rgba(0, 0, 0, 0.15);
  --link-hover-bg: #1a1a1a;
  --link-hover-text: #fff;
  --focus-ring: #1a1a1a;
  --toggle-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%231a1a1a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='5'/%3E%3Cline x1='12' y1='1' x2='12' y2='3'/%3E%3Cline x1='12' y1='21' x2='12' y2='23'/%3E%3Cline x1='4.22' y1='4.22' x2='5.64' y2='5.64'/%3E%3Cline x1='18.36' y1='18.36' x2='19.78' y2='19.78'/%3E%3Cline x1='1' y1='12' x2='3' y2='12'/%3E%3Cline x1='21' y1='12' x2='23' y2='12'/%3E%3Cline x1='4.22' y1='19.78' x2='5.64' y2='18.36'/%3E%3Cline x1='18.36' y1='5.64' x2='19.78' y2='4.22'/%3E%3C/svg%3E");
}

[data-theme="dark"] {
  --bg-page: #12121a;
  --bg-card: #252525;
  --blob-1: rgba(60, 50, 120, 0.35);
  --blob-2: rgba(80, 40, 100, 0.3);
  --blob-3: rgba(40, 70, 120, 0.3);
  --blob-4: rgba(90, 50, 130, 0.25);
  --bubble-1: rgba(255, 255, 255, 0.14);
  --bubble-2: rgba(120, 160, 255, 0.16);
  --bubble-3: rgba(200, 140, 255, 0.14);
  --bubble-stroke: rgba(255, 255, 255, 0.12);
  --bubble-shadow: rgba(0, 0, 0, 0.35);
  --bubble-word-color: rgba(255, 255, 255, 0.9);
  --text: #f0f0f0;
  --text-muted: #c8c8c8;
  --border: #404040;
  --photo-bg: #333;
  --photo-border: #404040;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 2px 12px rgba(0, 0, 0, 0.25), 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-photo: 0 2px 12px rgba(0, 0, 0, 0.3);
  --shadow-link-hover: 0 4px 16px rgba(0, 0, 0, 0.4);
  --spoiler-bg: #0d0d0d;
  --spoiler-border: rgba(255, 255, 255, 0.1);
  --link-hover-bg: #f0f0f0;
  --link-hover-text: #1a1a1a;
  --focus-ring: #f0f0f0;
  --toggle-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23f0f0f0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z'/%3E%3C/svg%3E");
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  padding: 24px 16px;
  transition: background 0.25s ease, color 0.25s ease;
  position: relative;
  z-index: 0;
}

/* Интерактивный фон */
.bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  overflow: hidden;
  transition: opacity 0.4s ease;
}

.bubbles {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  opacity: 0;
  transition: opacity 0.4s ease;
}

body.bubbles-visible .bubbles {
  opacity: 1;
}

.trash {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 24px;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  padding: 10px 16px 10px 12px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  box-shadow: var(--shadow-md);
  z-index: 2;
  pointer-events: none;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

body.bubbles-visible .trash {
  display: flex;
}

.bubbles-add {
  display: none; 
  position: fixed;
  bottom: 24px;
  left: 130px;
  width: 48px;
  height: 48px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border);
  box-shadow: var(--shadow-md);
  color: var(--text-muted);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

body.bubbles-visible .bubbles-add {
  display: flex;
}

.bubbles-add:hover {
  background: var(--link-hover-bg);
  color: var(--link-hover-text);
  border-color: var(--link-hover-bg);
  transform: scale(1.05);
}

.bubbles-add:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.bubbles-add__icon {
  flex-shrink: 0;
}

.trash.is-over {
  background: var(--link-hover-bg);
  border-color: var(--link-hover-bg);
  transform: scale(1.05);
}

.trash__icon {
  flex-shrink: 0;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.trash.is-over .trash__icon {
  color: var(--link-hover-text);
}

.trash__label {
  font-family: 'Inter', sans-serif;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: color 0.2s ease;
}

.trash.is-over .trash__label {
  color: var(--link-hover-text);
}

.hero__play-hint {
  display: none;
  margin-top: 0.5em;
  font-size: small;
}

body.bubbles-visible .hero__play-hint {
  display: block;
}

.bubble {
  position: absolute;
  border-radius: 999px;
  pointer-events: auto;
  cursor: grab;
  touch-action: none;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 30% 30%, var(--bubble-1), var(--bubble-2) 55%, var(--bubble-3));
  border: 1px solid var(--bubble-stroke);
  box-shadow: 0 8px 22px var(--bubble-shadow);
  opacity: 0.9;
  will-change: transform;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.bubble:hover {
  box-shadow: 0 10px 28px var(--bubble-shadow), 0 0 0 2px var(--border);
}

.bubble.is-dragging {
  cursor: grabbing;
}

.bubble__word {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  padding: 0 6px;
  color: var(--bubble-word-color);
  text-shadow:
    0 0 1px rgba(255, 255, 255, 1),
    0 0 3px rgba(255, 255, 255, 0.9),
    0 1px 2px rgba(0, 0, 0, 0.4),
    0 2px 4px rgba(0, 0, 0, 0.2);
  pointer-events: none;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  -webkit-font-smoothing: antialiased;
}

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

.bg__blob {
  position: absolute;
  width: 70vmax;
  height: 70vmax;
  border-radius: 50%;
  filter: blur(90px);
  will-change: transform;
}

.bg__blob--1 {
  background: var(--blob-1);
  top: -20%;
  left: -15%;
  animation: blob-float-1 22s ease-in-out infinite;
}

.bg__blob--2 {
  background: var(--blob-2);
  top: 40%;
  right: -25%;
  animation: blob-float-2 26s ease-in-out infinite;
}

.bg__blob--3 {
  background: var(--blob-3);
  bottom: -25%;
  left: 10%;
  animation: blob-float-3 24s ease-in-out infinite;
}

.bg__blob--4 {
  background: var(--blob-4);
  top: 10%;
  right: 20%;
  animation: blob-float-4 20s ease-in-out infinite;
}

@keyframes blob-float-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(5%, -8%) scale(1.05); }
  66% { transform: translate(-6%, 4%) scale(0.98); }
}

@keyframes blob-float-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-8%, 6%) scale(1.02); }
  66% { transform: translate(4%, -5%) scale(0.96); }
}

@keyframes blob-float-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(7%, 7%) scale(1.04); }
  66% { transform: translate(-5%, -4%) scale(0.97); }
}

@keyframes blob-float-4 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-6%, -8%) scale(1.03); }
}

.hub {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  padding: 40px 28px 36px;
  background: var(--bg-card);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  transition: background 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  z-index: 1;
  will-change: transform;
}

.hub::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--hub-tint, transparent);
  pointer-events: none;
  z-index: 0;
  transition: background 0.12s ease;
}

.hub > * {
  position: relative;
  z-index: 1;
}

@media (min-width: 480px) {
  .hub {
    padding: 48px 36px 44px;
  }
}

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 36px;
}

.hero__photo {
  width: 112px;
  height: 112px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin: 0 auto 24px;
  background: var(--photo-bg);
  border: 3px solid var(--photo-border);
  box-shadow: var(--shadow-photo);
}

@media (min-width: 480px) {
  .hero__photo {
    width: 128px;
    height: 128px;
    margin-bottom: 28px;
  }
}

.hero__intro {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 400;
  color: var(--text-muted);
  line-height: 1.6;
  letter-spacing: -0.01em;
}

@media (min-width: 480px) {
  .hero__intro {
    font-size: 1.125rem;
  }
}

.hero__intro strong {
  font-weight: 700;
  color: var(--text);
}

/* Spoiler — скрытое сообщение в стиле Telegram */
.spoiler {
  display: inline;
  cursor: pointer;
  user-select: none;
  outline: none;
  vertical-align: baseline;
}

.spoiler__text {
  display: inline;
  padding: 2px 8px 2px 4px;
  margin: 0;
  border-radius: 6px;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: filter 0.2s ease, background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.spoiler:not(.is-revealed) .spoiler__text {
  background: var(--spoiler-bg);
  color: var(--spoiler-bg);
  filter: blur(8px);
  box-shadow: inset 0 0 0 1px var(--spoiler-border);
}

.spoiler:hover:not(.is-revealed) .spoiler__text {
  filter: blur(6px);
}

.spoiler.is-revealed .spoiler__text {
  background: transparent;
  color: var(--text);
  filter: none;
  box-shadow: none;
}

.spoiler:focus-visible .spoiler__text {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

/* Links */
.links {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 24px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  color: var(--text);
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.link__icon {
  display: inline-flex;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.link__icon svg {
  width: 100%;
  height: 100%;
  vertical-align: middle;
}

.link:hover {
  border-color: var(--link-hover-bg);
  background: var(--link-hover-bg);
  color: var(--link-hover-text);
  box-shadow: var(--shadow-link-hover);
  transform: translateY(-1px);
}

.link:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.link:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

/* Переключатель темы */
.theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  border-radius: 10px;
  background: transparent;
  background-image: var(--toggle-icon);
  background-size: 20px;
  background-repeat: no-repeat;
  background-position: center;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s ease, background-color 0.2s ease;
}

.theme-toggle:hover {
  opacity: 1;
  background-color: var(--border);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

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

/* Контакты */
.contacts {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 20px;
}

.contacts__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.contacts__icon {
  display: inline-flex;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

.contacts__icon svg {
  width: 100%;
  height: 100%;
  vertical-align: middle;
}

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

.contacts__link:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: 2px;
}

@media (min-width: 480px) {
  .link {
    padding: 18px 28px;
    font-size: 1rem;
  }

  .contacts {
    margin-top: 32px;
    padding-top: 24px;
  }
}