@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@300;600;900&family=Roboto:wght@300;400&display=swap");

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

html, body {
  width: 100%;
  height: 100%;
}

body {
  overflow: hidden;
  background-color: #ffffff;
  font-family: "Montserrat", sans-serif;
  color: #000;
  position: relative;
}

/* TÍTULO VISYA */
.title {
  position: absolute;
  width: 100%;
  text-align: center;
  margin-top: 50px;
  color: black;
  font-size: 24px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
  z-index: 2;
}

.title h1 {
  font-size: 100px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  justify-content: center;
  margin-bottom: 10px;
}

.title h1 span:nth-of-type(2) {
  font-weight: 600;
}
.title h1 span:nth-of-type(3) {
  font-weight: 300;
}

/* FORM MINIMALISTA ABAIXO DO TÍTULO */
.login-form {
  margin: 40px auto 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  max-width: 320px;
  z-index: 2;
  position: relative;
  font-family: "Montserrat", sans-serif;
}

.login-line-input {
  width: 100%;
  padding: 6px 2px;
  border: none;
  border-bottom: 1px solid #000;
  background: transparent;
  font-size: 14px;
  font-weight: 400;
  color: #000;
  outline: none;
}

.login-line-input::placeholder {
  color: rgba(0, 0, 0, 0.45);
}

.login-line-input:focus {
  border-bottom-color: #000;
}

/* CANVAS DO THREE AO FUNDO */
canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: block;
}

/* OVERLAY DO LOADER (fica por cima de tudo) */
.loader-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.85);
  display: none;            /* controlado via JS */
  align-items: center;
  justify-content: center;
  z-index: 10;
}

/* iframe que carrega o loader */
.loader-frame {
  width: 140px;
  height: 140px;
  border: none;
  background: transparent;
}

/* BOTÃO UIVERSE – VERSÃO PRETO E BRANCO */
.uiverse {
  --duration: 7s;
  --easing: linear;
  --c-color-1: rgba(0, 0, 0, 0.55);
  --c-color-2: #000000;
  --c-color-3: #333333;
  --c-color-4: rgba(0, 0, 0, 0.85);
  --c-shadow: rgba(0, 0, 0, 0.35);
  --c-shadow-inset-top: rgba(255, 255, 255, 0.6);
  --c-shadow-inset-bottom: rgba(0, 0, 0, 0.45);
  --c-radial-inner: #ffffff;
  --c-radial-outer: #e5e5e5;
  --c-color: #ffffff;

  -webkit-tap-highlight-color: transparent;
  -webkit-appearance: none;
  outline: none;
  position: relative;
  cursor: pointer;
  border: none;
  display: table;
  border-radius: 24px;
  padding: 0;
  margin: 8px 0 0;
  text-align: center;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.08em;
  line-height: 1.5;
  color: var(--c-color);
  background: radial-gradient(
    circle,
    var(--c-radial-inner),
    var(--c-radial-outer) 80%
  );
  box-shadow: 0 0 10px var(--c-shadow);
}

/* já começa rápido */
.uiverse {
  --duration: 5000ms;
}

.uiverse:before {
  content: "";
  pointer-events: none;
  position: absolute;
  z-index: 3;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  border-radius: 24px;
  box-shadow:
    inset 0 3px 12px var(--c-shadow-inset-top),
    inset 0 -3px 4px var(--c-shadow-inset-bottom);
}

.uiverse .wrapper {
  -webkit-mask-image: -webkit-radial-gradient(white, black);
  overflow: hidden;
  border-radius: 24px;
  min-width: 132px;
  padding: 10px 0;
}

.uiverse .wrapper span {
  display: inline-block;
  position: relative;
  z-index: 1;
}

.uiverse .wrapper .circle {
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  filter: blur(var(--blur, 8px));
  background: var(--background, transparent);
  transform: translate(var(--x, 0), var(--y, 0)) translateZ(0);
  animation: var(--animation, none) var(--duration) var(--easing) infinite;
}

.uiverse .wrapper .circle.circle-1,
.uiverse .wrapper .circle.circle-9,
.uiverse .wrapper .circle.circle-10 {
  --background: var(--c-color-4);
}

.uiverse .wrapper .circle.circle-3,
.uiverse .wrapper .circle.circle-4 {
  --background: var(--c-color-2);
  --blur: 14px;
}

.uiverse .wrapper .circle.circle-5,
.uiverse .wrapper .circle.circle-6 {
  --background: var(--c-color-3);
  --blur: 16px;
}

.uiverse .wrapper .circle.circle-2,
.uiverse .wrapper .circle.circle-7,
.uiverse .wrapper .circle.circle-8,
.uiverse .wrapper .circle.circle-11,
.uiverse .wrapper .circle.circle-12 {
  --background: var(--c-color-1);
  --blur: 12px;
}

.uiverse .wrapper .circle.circle-1 {
  --x: 0;
  --y: -40px;
  --animation: circle-1;
}

.uiverse .wrapper .circle.circle-2 {
  --x: 92px;
  --y: 8px;
  --animation: circle-2;
}

.uiverse .wrapper .circle.circle-3 {
  --x: -12px;
  --y: -12px;
  --animation: circle-3;
}

.uiverse .wrapper .circle.circle-4 {
  --x: 80px;
  --y: -12px;
  --animation: circle-4;
}

.uiverse .wrapper .circle.circle-5 {
  --x: 12px;
  --y: -4px;
  --animation: circle-5;
}

.uiverse .wrapper .circle.circle-6 {
  --x: 56px;
  --y: 16px;
  --animation: circle-6;
}

.uiverse .wrapper .circle.circle-7 {
  --x: 8;
  --y: 28px;
  --animation: circle-7;
}

.uiverse .wrapper .circle.circle-8 {
  --x: 28px;
  --y: -4px;
  --animation: circle-8;
}

.uiverse .wrapper .circle.circle-9 {
  --x: 20px;
  --y: -12px;
  --animation: circle-9;
}

.uiverse .wrapper .circle.circle-10 {
  --x: 64px;
  --y: 16px;
  --animation: circle-10;
}

.uiverse .wrapper .circle.circle-11 {
  --x: 4px;
  --y: 4px;
  --animation: circle-11;
}

.uiverse .wrapper .circle.circle-12 {
  --blur: 14px;
  --x: 52px;
  --y: 4px;
  --animation: circle-12;
}

@keyframes circle-1 {
  33% { transform: translate(0px, 16px) translateZ(0); }
  66% { transform: translate(12px, 64px) translateZ(0); }
}

@keyframes circle-2 {
  33% { transform: translate(80px, -10px) translateZ(0); }
  66% { transform: translate(72px, -48px) translateZ(0); }
}

@keyframes circle-3 {
  33% { transform: translate(20px, 12px) translateZ(0); }
  66% { transform: translate(12px, 4px) translateZ(0); }
}

@keyframes circle-4 {
  33% { transform: translate(76px, -12px) translateZ(0); }
  66% { transform: translate(112px, -8px) translateZ(0); }
}

@keyframes circle-5 {
  33% { transform: translate(84px, 28px) translateZ(0); }
  66% { transform: translate(40px, -32px) translateZ(0); }
}

@keyframes circle-6 {
  33% { transform: translate(28px, -16px) translateZ(0); }
  66% { transform: translate(76px, -56px) translateZ(0); }
}

@keyframes circle-7 {
  33% { transform: translate(8px, 28px) translateZ(0); }
  66% { transform: translate(20px, -60px) translateZ(0); }
}

@keyframes circle-8 {
  33% { transform: translate(32px, -4px) translateZ(0); }
  66% { transform: translate(56px, -20px) translateZ(0); }
}

@keyframes circle-9 {
  33% { transform: translate(20px, -12px) translateZ(0); }
  66% { transform: translate(80px, -8px) translateZ(0); }
}

@keyframes circle-10 {
  33% { transform: translate(68px, 20px) translateZ(0); }
  66% { transform: translate(100px, 28px) translateZ(0); }
}

@keyframes circle-11 {
  33% { transform: translate(4px, 4px) translateZ(0); }
  66% { transform: translate(68px, 20px) translateZ(0); }
}

@keyframes circle-12 {
  33% { transform: translate(56px, 0px) translateZ(0); }
  66% { transform: translate(60px, -32px) translateZ(0); }
}

@media (max-width: 768px) {
  .title h1 {
    font-size: 60px;
  }
  .login-form {
    max-width: 260px;
    margin-top: 24px;
  }
}