/* ============================================================
   LOGIN PAGE — PokéArena
   ============================================================ */

/* ── Canvas de partículas ── */
#particle-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ── Paralaxe ── */
.parallax-container {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.parallax-layer { position: absolute; inset: 0; }

/* Estrelas */
.stars {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 15% 20%, rgba(255,255,255,0.8) 0%, transparent 100%),
    radial-gradient(1px 1px at 40% 60%, rgba(255,255,255,0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 70% 30%, rgba(255,255,255,0.7) 0%, transparent 100%),
    radial-gradient(1px 1px at 85% 75%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(2px 2px at 25% 85%, rgba(79,110,247,0.9) 0%, transparent 100%),
    radial-gradient(2px 2px at 60% 10%, rgba(245,200,66,0.8) 0%, transparent 100%),
    radial-gradient(1px 1px at 90% 45%, rgba(255,255,255,0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 50% 50%, rgba(255,255,255,0.4) 0%, transparent 100%);
  animation: stars-twinkle 4s ease-in-out infinite alternate;
}
@keyframes stars-twinkle {
  from { opacity: 0.7; }
  to   { opacity: 1; }
}

/* Anéis de energia */
.energy-rings {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid transparent;
  transform: translate(-50%, -50%);
  top: 0; left: 0;
}
.ring-1 {
  width: 600px; height: 600px;
  border-color: rgba(79,110,247,0.08);
  animation: rotate-ring 20s linear infinite;
  box-shadow: 0 0 30px rgba(79,110,247,0.05) inset;
}
.ring-2 {
  width: 900px; height: 900px;
  border-color: rgba(245,200,66,0.05);
  animation: rotate-ring 35s linear infinite reverse;
}
.ring-3 {
  width: 1200px; height: 1200px;
  border-color: rgba(79,110,247,0.04);
  animation: rotate-ring 50s linear infinite;
}

/* ── Silhuetas de Pokémon ── */
.bg-pokemon-silhouettes {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  overflow: hidden;
}

.silhouette {
  position: absolute;
  bottom: -20px;
  left: var(--x);
  width: var(--size);
  height: var(--size);
  opacity: 0.06;
  filter: brightness(0) invert(1);
  animation: float 6s ease-in-out infinite;
  animation-delay: var(--delay);
}
.silhouette img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ── Layout principal ── */
.login-page { overflow: hidden; }

.login-main {
  position: relative;
  z-index: 10;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
  gap: var(--space-xl);
}

/* ── Brand / Logo ── */
.brand {
  text-align: center;
  animation: fadeInUp 0.8s ease both;
}

.brand-icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.brand-icon .pokeball-logo {
  width: 80px;
  height: 80px;
  animation: float 3s ease-in-out infinite, pulse-glow 3s ease-in-out infinite;
  cursor: default;
}

.brand-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 900;
  letter-spacing: 0.05em;
  line-height: 1;
  margin-bottom: var(--space-sm);
  position: relative;
}

.title-poke {
  color: var(--clr-gold);
  text-shadow: 0 0 30px var(--clr-gold-glow), 0 0 60px var(--clr-gold-glow);
}
.title-arena {
  color: var(--clr-text);
  text-shadow: 0 0 20px var(--clr-primary-glow);
}

/* Efeito glitch no título */
.brand-title::before,
.brand-title::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  font-family: var(--font-display);
  font-weight: 900;
}
.brand-title::before {
  color: var(--clr-primary);
  opacity: 0;
  animation: glitch 5s infinite step-end;
  animation-delay: 2s;
}
.brand-title::after {
  color: var(--clr-red);
  opacity: 0;
  animation: glitch 5s infinite step-end;
  animation-delay: 2.1s;
}

.brand-tagline {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--clr-text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ── Auth Card ── */
.auth-card {
  width: 100%;
  max-width: 420px;
  background: linear-gradient(135deg,
    rgba(15,19,40,0.95) 0%,
    rgba(22,27,56,0.9) 100%
  );
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow:
    var(--shadow-card),
    0 0 0 1px rgba(255,255,255,0.03),
    inset 0 1px 0 rgba(255,255,255,0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.8s 0.2s ease both;
}

/* Linha scan no card */
.auth-card::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--clr-primary) 50%,
    transparent 100%
  );
  opacity: 0.4;
  animation: scan-line 4s linear infinite;
  pointer-events: none;
}

/* Borda superior luminosa */
.auth-card::before {
  content: '';
  position: absolute;
  top: 0; left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent, var(--clr-primary-h), var(--clr-gold), var(--clr-primary-h), transparent
  );
  opacity: 0.6;
}

/* ── Step header ── */
.step-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}
.step-header h2 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.05em;
}
.step-header p {
  font-size: 1rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
}

/* ── Botão Google ── */
.btn-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  width: 100%;
  padding: 14px 24px;
  background: linear-gradient(135deg, #1a1f3a 0%, #0f1328 100%);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition:
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast);
}
.btn-google:hover {
  border-color: var(--clr-border-glow);
  box-shadow: 0 0 25px var(--clr-primary-glow);
  transform: translateY(-2px);
  color: var(--clr-text);
}
.btn-google:active { transform: translateY(0); }

.google-icon { width: 22px; height: 22px; flex-shrink: 0; }

/* ── Botão primário ── */
.btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  width: 100%;
  padding: 16px 24px;
  background: linear-gradient(135deg, var(--clr-primary) 0%, #3a52d4 100%);
  border: none;
  border-radius: var(--radius-lg);
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition:
    box-shadow var(--transition-normal),
    transform var(--transition-fast);
  box-shadow: 0 4px 20px var(--clr-primary-glow);
}
.btn-primary:hover {
  box-shadow: 0 8px 35px var(--clr-primary-glow), 0 0 60px rgba(79,110,247,0.2);
  transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-arrow {
  font-size: 1.2rem;
  transition: transform var(--transition-fast);
}
.btn-primary:hover .btn-arrow { transform: translateX(4px); }

/* Efeito shine nos botões */
.btn-shine {
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    105deg,
    transparent 20%,
    rgba(255,255,255,0.12) 50%,
    transparent 80%
  );
  transform: skewX(-15deg);
  animation: shimmer 3s ease-in-out infinite;
}

/* ── Divider ── */
.divider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
  color: var(--clr-text-dim);
  font-size: 0.85rem;
}
.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--clr-border);
}

/* ── Login info ── */
.login-info {
  text-align: center;
  font-size: 0.82rem;
  color: var(--clr-text-dim);
  line-height: 1.6;
}

/* ── Trainer avatar ── */
.trainer-avatar {
  position: relative;
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-md);
}
.trainer-avatar img {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--clr-primary);
}
.avatar-ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid var(--clr-gold);
  opacity: 0.6;
  animation: rotate-ring 3s linear infinite;
}

/* ── Nickname form ── */
.input-group {
  position: relative;
  margin-bottom: var(--space-sm);
}

.input-group input {
  width: 100%;
  padding: 14px 50px 14px 18px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  outline: none;
  transition:
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    background var(--transition-normal);
}
.input-group input::placeholder { color: var(--clr-text-dim); }
.input-group input:focus {
  background: rgba(79,110,247,0.05);
  border-color: var(--clr-primary);
  box-shadow: 0 0 20px var(--clr-primary-glow);
}
.input-group input.valid {
  border-color: #4caf80;
  box-shadow: 0 0 20px rgba(76,175,128,0.3);
}
.input-group input.invalid {
  border-color: var(--clr-red);
  box-shadow: 0 0 20px var(--clr-red-glow);
}

.input-border {
  position: absolute;
  bottom: 0; left: 10%; right: 10%;
  height: 2px;
  background: var(--clr-primary);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
  border-radius: 1px;
}
.input-group input:focus ~ .input-border { transform: scaleX(1); }

.input-check {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.check-icon {
  font-size: 1rem;
  transition: all var(--transition-normal);
}

.nickname-form { display: flex; flex-direction: column; gap: var(--space-md); }

.input-hint {
  font-size: 0.8rem;
  color: var(--clr-text-dim);
  margin-top: -var(--space-sm);
}

/* ── Passo de auth (transição) ── */
.auth-step {
  animation: fadeIn 0.4s ease both;
}

/* ── Features bar ── */
.features-bar {
  display: flex;
  gap: var(--space-xl);
  flex-wrap: wrap;
  justify-content: center;
  animation: fadeInUp 0.8s 0.5s ease both;
}

.feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  color: var(--clr-text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}
.feature-item:hover { color: var(--clr-text); }

.feature-icon {
  font-size: 1.4rem;
  filter: grayscale(0.3);
}

/* ── Loading overlay ── */
.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--clr-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}
.loading-overlay.active {
  opacity: 1;
  pointer-events: all;
}
.loading-pokeball {
  width: 80px;
  height: 80px;
}
.loading-pokeball .pokeball-logo { width: 80px; height: 80px; }
.loading-text {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  animation: pulse-glow 1.5s ease-in-out infinite;
}

/* ── Responsivo ── */
@media (max-width: 480px) {
  .auth-card { padding: var(--space-lg); border-radius: var(--radius-lg); }
  .features-bar { gap: var(--space-lg); }
  .silhouette { opacity: 0.04; }
}