:root {
  /* Paleta de Cores Premium */
  --bg-dark: #070a13;
  --card-bg: rgba(13, 19, 33, 0.8);
  --accent-primary: #81a9ff;    /* Azul Suave */
  --accent-secondary: #64ffda;  /* Verde Água/Tiffany */
  --accent-tertiary: #b388ff;   /* Roxo Pastel */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-glass: rgba(255, 255, 255, 0.1);
  --radius-xl: 32px;
  --radius-lg: 20px;
  --radius-md: 12px;
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --transition-smooth: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700&family=Outfit:wght@400;600;700;800&display=swap');

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-main);
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  line-height: 1.6;
}

/* Fundo Dinâmico com Mesh Gradient */
body::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 10% 10%, rgba(129, 169, 255, 0.2) 0%, transparent 45%),
    radial-gradient(circle at 90% 90%, rgba(100, 255, 218, 0.15) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(179, 136, 255, 0.1) 0%, transparent 60%);
  filter: blur(120px);
  z-index: -1;
  animation: bgMorph 20s ease-in-out infinite alternate;
}

@keyframes bgMorph {
  0% { transform: scale(1) translate(0, 0); }
  50% { transform: scale(1.15) translate(3%, 2%); }
  100% { transform: scale(1) translate(0, 0); }
}

.container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  width: min(1200px, 95vw);
  height: 720px;
  background: var(--card-bg);
  backdrop-filter: blur(30px) saturate(200%);
  -webkit-backdrop-filter: blur(30px) saturate(200%);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-glass);
  box-shadow: 0 50px 100px -20px rgba(0, 0, 0, 0.7);
  overflow: hidden;
  position: relative;
}

/* Painel Esquerdo: Branding Elegante */
.left-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px;
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.4) 0%, transparent 100%);
  border-right: 1px solid var(--border-glass);
  overflow: hidden;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(129, 169, 255, 0.08) 1.5px, transparent 1.5px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 80%);
  z-index: 0;
}

.logo-container {
  position: relative;
  z-index: 2;
  text-align: center;
}

.logo-img {
  width: 180px;
  height: 180px;
  object-fit: contain;
  border-radius: 44px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    inset 0 1px 1px rgba(255, 255, 255, 0.1);
  margin-bottom: 32px;
  animation: float 6s ease-in-out infinite;
}

.left-panel h1 {
  font-family: var(--font-heading);
  font-size: 3.8rem;
  font-weight: 400; /* Peso base leve */
  letter-spacing: -2.5px;
  color: #fff;
  margin-bottom: 0px;
  line-height: 1;
}

.left-panel h1 span {
  font-weight: 800; /* Peso extra bold para o 'Diamond' */
  background: linear-gradient(135deg, #fff 20%, var(--accent-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.left-panel p {
  color: var(--accent-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 6px;
  text-transform: uppercase;
  opacity: 0.9;
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 15px;
}

.left-panel p::before,
.left-panel p::after {
  content: '';
  height: 1px;
  width: 20px;
  background: var(--accent-secondary);
  opacity: 0.4;
}

/* Painel Direito: Formulário Moderno */
.right-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  background: rgba(255, 255, 255, 0.015);
}

.login-form {
  width: 100%;
  max-width: 400px;
}

.login-form h2 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
  letter-spacing: -1px;
}

.subtitle {
  color: var(--text-muted);
  margin-bottom: 48px;
  font-size: 1.1rem;
  font-weight: 400;
}

/* Inputs Refinados */
.input-group {
  position: relative;
  margin-bottom: 32px;
}

.input-group input {
  width: 100%;
  padding: 22px 20px;
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 1.05rem;
  outline: none;
  transition: var(--transition-smooth);
}

.input-group input:focus {
  background: rgba(15, 23, 42, 0.6);
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px rgba(129, 169, 255, 0.15);
}

.input-group label {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  transition: var(--transition-smooth);
  font-size: 1.05rem;
  font-weight: 500;
}

.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label {
  top: 0;
  left: 16px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-primary);
  background: #0f172a; /* Cor sólida combinando com o input:focus */
  padding: 4px 12px;
  border-radius: 8px;
  transform: translateY(-50%) scale(0.9);
}

.password-toggle {
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition-smooth);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.password-toggle:hover {
  color: var(--accent-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* Botão de Ação Principal */
.btn-login {
  width: 100%;
  padding: 22px;
  border: none;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-tertiary) 100%);
  color: #070a13;
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  transition: var(--transition-smooth);
  box-shadow: 0 20px 40px -10px rgba(129, 169, 255, 0.3);
  margin-top: 10px;
}

.btn-login:hover {
  transform: translateY(-4px);
  box-shadow: 0 30px 60px -15px rgba(129, 169, 255, 0.4);
  filter: brightness(1.1);
}

.btn-login:active {
  transform: translateY(-1px);
}

.btn-login span {
  letter-spacing: 0.5px;
}

/* Link de Registro e Divisor */
.divider {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 40px 0 30px;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-glass), transparent);
}

.btn-register-link {
  display: block;
  text-align: center;
  color: var(--accent-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition-smooth);
  padding: 12px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
}

.btn-register-link:hover {
  background: rgba(100, 255, 218, 0.05);
  border-color: rgba(100, 255, 218, 0.1);
  text-shadow: 0 0 20px rgba(100, 255, 218, 0.3);
  letter-spacing: 0.5px;
}

/* Notificações */
.alert {
  padding: 20px;
  border-radius: var(--radius-lg);
  margin-bottom: 32px;
  font-size: 1rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 16px;
  border: 1px solid;
  animation: slideIn 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes slideIn {
  from { transform: translateY(-10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.alert-error {
  background: rgba(255, 107, 107, 0.08);
  border-color: rgba(255, 107, 107, 0.2);
  color: #ff8787;
}

.alert-success {
  background: rgba(100, 255, 218, 0.08);
  border-color: rgba(100, 255, 218, 0.2);
  color: #64ffda;
}

/* Animações */
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0); }
  50% { transform: translateY(-20px) rotate(1.5deg); }
}

/* Responsividade */
@media (max-width: 1024px) {
  .container {
    grid-template-columns: 1fr;
    height: auto;
    width: 500px;
    margin: 40px 20px;
  }
  .left-panel {
    padding: 60px 40px;
    border-right: none;
    border-bottom: 1px solid var(--border-glass);
  }
  .logo-img {
    width: 140px;
    height: 140px;
  }
  .left-panel h1 {
    font-size: 2.8rem;
  }
}

@media (max-width: 550px) {
  .container {
    width: 100%;
    border-radius: 0;
    height: 100vh;
    margin: 0;
    border: none;
  }
  .right-panel {
    padding: 40px 24px;
  }
}