/* ----- layout ----- */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.animated-background {
  width: 100%;
  height: 100%;
  background: url("assets/macwallpaper.jpg") center / cover no-repeat;
}

/* ----- card & glass layers ----- */
.login-card {
  width: 400px;
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.10),
              0 1.5px 6px  rgba(0, 0, 0, 0.08);
  transition: transform 0.4s cubic-bezier(.175,.885,.32,1.6);
  cursor: pointer;
  background: transparent;
}

.glass-effect {
  position: absolute;
  inset: 0;
  z-index: 0;
  backdrop-filter: blur(5px);
  filter: url(#glass-distortion);
  isolation: isolate;
}

.glass-tint {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(0, 0, 0, 0.15);
}

.glass-shine {
  position: absolute;
  inset: 0;
  z-index: 2;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 24px;
  box-shadow: inset 1px 1px 8px rgba(255,255,255,0.18),
              inset -1px -1px 8px rgba(255,255,255,0.08);
  pointer-events: none;
}

/* ----- content ----- */
.glass-content { position: relative; z-index: 3; padding: 2rem; color: #fff; }

.login-title {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 2rem;
  font-weight: 600;
  text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.form-group { margin-bottom: 1.5rem; }

/* inputs */
.glass-input {
  width: 90%;
  padding: 12px 20px;
  border: none;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.10);
  color: #fff;
  font-size: 1rem;
  backdrop-filter: blur(5px);
  transition: background 0.3s, box-shadow 0.3s;
}

.glass-input::placeholder { color: rgba(255,255,255,0.7); }

.glass-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.20);
  box-shadow: 0 0 15px rgba(255,255,255,0.10);
}

/* button */
.glass-button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.20);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s, transform 0.3s, box-shadow 0.3s;
  backdrop-filter: blur(5px);
  position: relative;
  overflow: hidden;
}

.glass-button:hover {
  background: rgba(255, 255, 255, 0.30);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.20);
}

.glass-button:active { transform: translateY(0); }

/* ripple */
.click-gradient {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle,
    rgba(255,255,255,0.40) 0%,
    rgba(180,180,255,0.20) 40%,
    rgba(100,100,255,0.10) 70%,
    rgba(50,50,255,0)    100%);
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
  pointer-events: none;
  animation: gradient-ripple 0.6s ease-out forwards;
  z-index: 4;
}

@keyframes gradient-ripple {
  from { transform: translate(-50%, -50%) scale(0); opacity: 1; }
  to   { transform: translate(-50%, -50%) scale(3); opacity: 0; }
}