/* ================================
   GLOBAL VARIABLES
================================ */
:root {
  --bg1: #07070b;
  --neon-c1: #00f5ff;
  --neon-c2: #ff4df0;
  --neon-c3: #7a5cff;
  --panel-dark: rgba(6, 8, 12, 0.85);
}

/* ================================
   RESET & BASE
================================ */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: "Montserrat", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
  background-size: 300% 300%;
  animation: bgMove 8s ease infinite;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background moving gradient */
@keyframes bgMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ================================
   NEON BACKGROUND SQUARES
================================ */
.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.bg .sq {
  position: absolute;
  border: 2px solid rgba(0, 255, 240, 0.25);
  border-radius: 6px;
  filter: drop-shadow(0 8px 20px rgba(0,255,240,0.06));
  animation: float linear infinite;
  will-change: transform, opacity;
  opacity: 0.9;
}

/* Variant sizes, positions, and colors */
.sq.s1 { width:48px; height:48px; left:6%; top:12%; animation-duration:18s; border-color:rgba(0,255,240,0.4); }
.sq.s2 { width:70px; height:70px; left:18%; top:78%; animation-duration:22s; border-color:rgba(122,92,255,0.28); }
.sq.s3 { width:40px; height:40px; left:78%; top:16%; animation-duration:16s; border-color:rgba(255,77,240,0.28); }
.sq.s4 { width:90px; height:90px; left:86%; top:64%; animation-duration:26s; border-color:rgba(0,255,240,0.2); }
.sq.s5 { width:36px; height:36px; left:46%; top:4%; animation-duration:20s; border-color:rgba(255,77,240,0.22); }
.sq.s6 { width:110px; height:110px; left:8%; top:60%; animation-duration:30s; border-color:rgba(122,92,255,0.18); }
.sq.s7 { width:30px; height:30px; left:60%; top:86%; animation-duration:14s; border-color:rgba(0,255,240,0.35); }
.sq.s8 { width:56px; height:56px; left:34%; top:44%; animation-duration:21s; border-color:rgba(255,77,240,0.2); }

/* Floating animation */
@keyframes float {
  0%   { transform: translateY(0) rotate(0deg) scale(1); opacity:0.95; }
  25%  { transform: translateY(-30px) rotate(12deg) scale(1.05); opacity:0.9;}
  50%  { transform: translateY(-60px) rotate(24deg) scale(1); opacity:0.8;}
  75%  { transform: translateY(-30px) rotate(36deg) scale(0.98); opacity:0.9;}
  100% { transform: translateY(0) rotate(360deg) scale(1); opacity:0.95;}
}

/* ================================
   PARTICLES CANVAS
================================ */
#particle-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
  pointer-events: none;
  opacity: 0.3;
}

/* Click Ripple Effect */
.click-ripple {
  position: fixed;
  pointer-events: none;
  width: 40px; height: 40px;
  margin-left: -20px;
  margin-top: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, #7a5cff88 0%, #ff4df044 60%, transparent 100%);
  animation: ripple-burst 0.9s cubic-bezier(0.2,0.7,0.6,1);
  z-index: 10001;
}

@keyframes ripple-burst {
  0%   { transform: scale(0.6); opacity: 0.74; }
  80%  { opacity: 0.15; }
  100% { transform: scale(3); opacity: 0; }
}

/* ================================
   AUTH WRAPPER & CARD
================================ */
.wrap {
  position: relative;
  width: 920px;
  max-width: calc(100% - 48px);
  min-height: 520px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth {
  position: relative;
  width: 100%;
  min-height: 520px;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border-radius: 30px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 0 36px rgba(0,255,240,0.04) inset;
  border: 1px solid rgba(255,255,255,0.02);
}

/* Neon border glow */
.auth::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 26px;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(0,255,240,0.07), rgba(255,77,240,0.06), rgba(122,92,255,0.04));
  box-shadow:
    0 8px 40px rgba(0,255,240,0.06),
    0 0 40px rgba(122,92,255,0.03);
  mix-blend-mode: screen;
  z-index: 1;
}

/* ================================
   PANELS
================================ */
.panel {
  position: absolute;
  top: 0;
  height: 100%;
  transition: transform 0.7s cubic-bezier(.2,.9,.3,1), opacity 0.5s;
}

.sign-in,
.sign-up {
  width: 50%;
  padding: 64px 56px;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sign-in { left: 0; }
.sign-up { left: 0; opacity: 0; pointer-events: none; }

/* Active state transitions */
.right-active .sign-in {
  transform: translateX(100%);
  opacity: 0;
  pointer-events: none;
}
.right-active .sign-up {
  transform: translateX(100%);
  opacity: 1;
  pointer-events: auto;
}

/* ================================
   FORM CARD
================================ */
.card {
  width: 100%;
  max-width: 380px;
  color: #cfeef3;
  z-index: 4;
}

.card h2 {
  font-size: 26px;
  font-weight: 700;
  color: #dffcff;
  margin-bottom: 14px;
}

.card p.lead {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 22px;
}

.socials {
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
}
.socials button {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.04);
  color: #dffcff;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0,0,0,0.4) inset;
  transition: transform 0.16s;
}
.socials button:hover {
  transform: translateY(-3px);
}

.field {
  width: 100%;
  margin-bottom: 12px;
}

.field input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.06);
  background: rgba(0,0,0,0.35);
  color: #eafcff;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5) inset;
}
.field input::placeholder {
  color: rgba(255,255,255,0.35);
}

.link-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 6px 0 18px;
}
.link-row a {
  color: var(--neon-c1);
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
}

.cta {
  display: flex;
  gap: 12px;
}

.btn-primary {
  padding: 12px 36px;
  border-radius: 24px;
  border: none;
  background: linear-gradient(90deg, var(--neon-c1), var(--neon-c2));
  color: #051019;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(0,255,240,0.12), 0 0 28px rgba(255,77,240,0.06);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.btn-primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,255,240,0.18);
}

.ghost {
  padding: 10px 30px;
  border-radius: 24px;
  background: transparent;
  border: 1.5px solid rgba(255,255,255,0.12);
  color: #e8ffff;
  font-weight: 700;
  cursor: pointer;
}

/* ================================
   OVERLAY
================================ */
.overlay-wrap {
  position: absolute;
  left: 50%;
  top: 0;
  width: 50%;
  height: 100%;
  overflow: hidden;
  z-index: 2;
  transition: transform 0.7s cubic-bezier(.2,.9,.3,1);
  border-left: 1px solid rgba(255,255,255,0.02);
  border-radius: 0 30px 30px 0;
}

.overlay {
  position: absolute;
  left: -100%;
  top: 0;
  width: 200%;
  height: 100%;
  background: linear-gradient(135deg, #00f0ff, #ff00ff, #00ff9f);
  background-size: 300% 300%;
  animation: neonGradient 6s ease infinite;
  background-blend-mode: screen;
  transition: transform 0.7s cubic-bezier(.2,.9,.3,1);
  display: flex;
}

@keyframes neonGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.overlay-panel {
  width: 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 64px 48px;
  color: white;
}

.overlay-panel h1 {
  color: var(--neon-c1);
  font-size: 36px;
  text-shadow: 0 0 6px rgba(0,255,240,0.6),
               0 0 18px rgba(0,255,240,0.25),
               0 8px 30px rgba(0,0,0,0.6);
  margin-bottom: 12px;
}

.overlay-panel p {
  color: rgba(255,255,255,0.9);
  font-size: 14px;
  margin-bottom: 24px;
}

/* Active state */
.right-active .overlay-wrap { transform: translateX(-100%); }
.right-active .overlay { transform: translateX(50%); }

/* ================================
   RESPONSIVE
================================ */
@media (max-width:880px) {
  .auth { border-radius: 20px; }
  .sign-in, .sign-up { padding: 40px 28px; }
  .overlay-panel h1 { font-size: 28px; }
  .wrap { padding: 16px; }
}

/* Mobile Toggle Buttons Styling */
@media (max-width: 720px) {
  .mobile-toggle {
    display: flex;
    justify-content: space-around;
    margin: 16px 0;
  }

  .mobile-toggle button {
    flex: 1;
    padding: 12px 10px;
    border: none;
    background: rgba(255,255,255,0.08);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
  }

  .mobile-toggle button.active {
    background: linear-gradient(90deg, var(--neon-c1), var(--neon-c2));
    color: #051019;
  }

  /* Stack forms vertically but only show one at a time */
  .sign-in,
  .sign-up {
    width: 100% !important;
    position: relative !important;
    opacity: 1;
    transform: none;
    display: none; /* Hide both by default */
  }

  .sign-in.active,
  .sign-up.active {
    display: block; /* Show the selected form */
  }

  /* Hide overlay panel for mobile */
  .overlay-wrap {
    display: none !important;
  }
}
/* Hide mobile toggle buttons by default (desktop view) */
.mobile-toggle {
  display: none;
}

/* Show toggle buttons only in mobile view */
@media (max-width: 720px) {
  .mobile-toggle {
    display: flex;
    justify-content: space-around;
    margin: 16px 0;
  }
}