:root {
  --page-bg: #ffffff;
  --text-color: #000000;
  --header-bg: rgba(255, 255, 255, 0.8);
  --header-border: #eaeaea;
  --nav-link: #666666;
  --nav-link-hover: #000000;
  --button-bg: #f0f0f0;
  --button-border: #dcdcdc;
  --button-hover-bg: #e5e5e5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page-bg: #0a0a0a;
    --text-color: #e0e0e0;
    --header-bg: rgba(10, 10, 10, 0.8);
    --header-border: #2a2a2a;
    --nav-link: #a0a0a0;
    --nav-link-hover: #ffffff;
    --button-bg: #1a1a1a;
    --button-border: #3a3a3a;
    --button-hover-bg: #2a2a2a;
  }
}

*{box-sizing:border-box}

body{
  margin:0;
  font-family:'Inter',sans-serif;
}

body.page-main {
  background-color: var(--page-bg);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

.site-header{
  position:sticky;
  top:0;
  left:0;
  width:100%;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:0 2rem;
  height:60px;
  backdrop-filter:blur(10px);
  background-color: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  z-index:1000;
  transition: background-color 0.3s, border-bottom 0.3s;
}

.logo a{
  font-weight:700;
  font-size:1.5rem;
  text-decoration:none;
  color: var(--text-color);
}

nav a{
  text-decoration:none;
  margin-left:1.5rem;
  font-size:1rem;
  color: var(--nav-link);
  transition:color 0.2s ease-in-out;
}

nav a:hover{
  color: var(--nav-link-hover);
}

nav a.active{
  color: var(--nav-link-hover);
  font-weight:700;
}

.main-content{
  display:flex;
  justify-content:center;
  align-items:center;
  min-height:calc(100vh - 60px);
  padding:2rem;
  /* Убираем отступ отсюда, так как он не везде нужен */
}

/* Новый стиль для контента главной страницы */
.main-content-padded {
  padding-top: 60px;
}


.button-container{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1.5rem;
  max-width:600px;
  width:100%;
}

.minimal-button{
  padding:2.5rem;
  font-size:1.2rem;
  border-radius:24px;
  cursor:pointer;
  background-color: var(--button-bg);
  border: 1px solid var(--button-border);
  color: var(--text-color);
  transition:background-color 0.2s,transform 0.2s;
  text-align:center;
}

.minimal-button:hover{
  background-color: var(--button-hover-bg);
  transform:translateY(-4px);
}

@media (max-width:600px){
  .button-container{grid-template-columns:1fr}
  .minimal-button{padding:2rem;font-size:1rem}
  .site-header{padding:0 1rem}
  nav a{margin-left:1rem}
}
/* --- Анимация фона --- */
.background-particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -1; /* Помещаем за всем контентом */
  transition: opacity 0.4s ease;
}

/* Пока открыт портал, фоновые пузыри убираем — они лежат поверх него */
body:has(.email-btn:hover) .background-particles {
  opacity: 0;
}

.background-particles span {
  position: absolute;
  display: block;
  list-style: none;
  width: 20px;
  height: 20px;
  background-color: var(--button-bg); /* Используем цвет кнопок для адаптивности */
  border-radius: 50%;
  bottom: -150px; /* Начинаем анимацию за пределами экрана */
  animation: animate-particles 25s linear infinite;
}

/* Задаем разные размеры и задержки для каждой частицы */
.background-particles span:nth-child(1) {
  left: 25%;
  width: 80px;
  height: 80px;
  animation-delay: 0s;
}

.background-particles span:nth-child(2) {
  left: 10%;
  width: 20px;
  height: 20px;
  animation-delay: 2s;
  animation-duration: 12s;
}

.background-particles span:nth-child(3) {
  left: 70%;
  width: 20px;
  height: 20px;
  animation-delay: 4s;
}

.background-particles span:nth-child(4) {
  left: 40%;
  width: 60px;
  height: 60px;
  animation-delay: 0s;
  animation-duration: 18s;
}

.background-particles span:nth-child(5) {
  left: 65%;
  width: 20px;
  height: 20px;
  animation-delay: 0s;
}

.background-particles span:nth-child(6) {
  left: 85%;
  width: 110px;
  height: 110px;
  animation-delay: 3s;
}

/* Сама анимация */
@keyframes animate-particles {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(-100vh) rotate(720deg);
    opacity: 0;
  }
}
/* --- Liquid-эффект для текста --- */
.liquid {
  display: inline-block;
  background:
    radial-gradient(60% 120% at 20% 50%, #fff 0%, transparent 60%),
    radial-gradient(50% 120% at 80% 50%, #fff 0%, transparent 60%),
    conic-gradient(from 0deg, #ff00cc, #3333ff, #00ffcc, #ff6600, #ff0000, #00ff99, #ff00cc);
  background-size: 200% 200%, 200% 200%, 200% 200%;
  background-position: 0% 50%, 100% 50%, 50% 50%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: liquid-shift 7s ease-in-out infinite;
}

@keyframes liquid-shift {
  0% {
    background-position: 0% 50%, 100% 50%, 50% 50%;
  }
  50% {
    background-position: 100% 50%, 0% 50%, 60% 40%;
  }
  100% {
    background-position: 0% 50%, 100% 50%, 50% 50%;
  }
}
.liquid{
display:inline-block;background:
radial-gradient(60% 120% at 20% 50%,#fff 0%,transparent 60%),
radial-gradient(50% 120% at 80% 50%,#fff 0%,transparent 60%),
conic-gradient(from 0deg,#ff00cc,#3333ff,#00ffcc,#ff6600,#ff0000,#00ff99,#ff00cc);
background-size:200% 200%,200% 200%,200% 200%;
background-position:0% 50%,100% 50%,50% 50%;
-webkit-background-clip:text;-webkit-text-fill-color:transparent;
animation:liquid-shift 7s ease-in-out infinite
}
@keyframes liquid-shift{
0%{background-position:0% 50%,100% 50%,50% 50%}
50%{background-position:100% 50%,0% 50%,60% 40%}
100%{background-position:0% 50%,100% 50%,50% 50%}
}

/* --- Business Card --- */
.business-card {
  position: relative;
  background: rgba(20, 20, 20, 0.4);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 26px; /* Squircle effect approximation */
  padding: 3rem;
  max-width: 400px;
  width: 100%;
  text-align: center;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
  color: #ffffff; /* Dark theme text */
  transform-style: preserve-3d;
  will-change: transform;
  --mouse-x: -100px;
  --mouse-y: -100px;
}

/* Glowing border */
.business-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: inherit;
  padding: 2px;
  background: radial-gradient(
    400px circle at var(--mouse-x) var(--mouse-y),
    rgba(255, 255, 255, 0.6),
    transparent 40%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  z-index: 10;
  transition: background 0.1s;
}

/* Soft inner glow */
.business-card::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: inherit;
  background: radial-gradient(
    600px circle at var(--mouse-x) var(--mouse-y),
    rgba(255, 255, 255, 0.05),
    transparent 40%
  );
  pointer-events: none;
  z-index: 0;
}

.business-card h2 {
  margin-top: 0;
  font-size: 2.2rem;
  margin-bottom: 1rem;
  transform: translateZ(50px);
  text-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

.business-card p {
  font-size: 1.1rem;
  line-height: 1.5;
  margin-bottom: 2rem;
  color: #cccccc;
  transform: translateZ(30px);
}

.business-card .email-btn {
  display: inline-block;
  padding: 0.8rem 1.75rem;
  background-color: #ffffff;
  color: #141414;
  text-decoration: none;
  border-radius: 100px;
  border: 2px solid rgba(255, 255, 255, 0);
  box-shadow:
    0 3.3px 3px rgba(0, 0, 0, 0.1),
    0 8px 7px rgba(0, 0, 0, 0.13),
    0 17px 14px rgba(0, 0, 0, 0.17),
    0 35px 29px rgba(0, 0, 0, 0.22);
  transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform: translateZ(40px);
  position: relative;
  z-index: 2;
}

.business-card .email-btn:hover {
  background-color: rgba(255, 255, 255, 0.16);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.16);
  box-shadow: none;
  transform: translateZ(50px) scale(1.05);
}

/* --- Варп-портал под кнопкой --- */
.warp-layer {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  overflow: hidden;
  /* «Космос» под лучами — чтобы вырез был тёмным и в светлой теме тоже */
  background: #06060a;
}

.warp-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0;
}

/* Плёночное зерно поверх частиц */
.warp-grain {
  position: absolute;
  inset: 0;
  opacity: 0.16;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Непрозрачная крышка цвета фона: в ней прорезается круг, сквозь который видно варп */
.warp-veil {
  --warp-x: 50%;
  --warp-y: 50%;
  --warp-r: 0px;
  position: absolute;
  inset: 0;
  background: var(--page-bg);
  -webkit-mask: radial-gradient(circle at var(--warp-x) var(--warp-y), transparent var(--warp-r), #000 var(--warp-r));
  mask: radial-gradient(circle at var(--warp-x) var(--warp-y), transparent var(--warp-r), #000 var(--warp-r));
}

.card-content {
  position: relative;
  z-index: 1;
  transform-style: preserve-3d;
}

.nav-wave-link {
  font-size: 1.15rem;
  line-height: 1;
  vertical-align: middle;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nav-symbol-pulse {
  display: inline-block;
  font-size: 1.25rem;
  line-height: 1;
  animation: wavePulseGlobal 2.8s ease-in-out infinite;
}

@keyframes wavePulseGlobal {
  0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.85; }
  50% { transform: scale(1.2) rotate(8deg); opacity: 1; filter: drop-shadow(0 0 5px rgba(0, 240, 255, 0.6)); }
}