:root {
  --primary: #d10000;
  --primary-glow: rgba(209, 0, 0, 0.4);
  --bg: #0a0a0a;
  --card: #151515;
  --text: #ffffff;
  --gray: #777;
  --border: #222;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background-color: var(--bg);
  background-image: radial-gradient(circle at 50% 50%, #1a0000 0%, #0a0a0a 100%);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--text);
  overflow: hidden;
}

.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}

.login-box {
  background: var(--card);
  padding: 50px 40px;
  width: 90%;
  max-width: 400px;
  border-radius: 24px;
  border: 1px solid var(--border);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  text-align: center;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease;
}

.login-box:hover {
  transform: translateY(-5px);
  border-color: #333;
}

.logo h1 {
  color: var(--primary);
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -1px;
  text-shadow: 0 0 20px var(--primary-glow);
}

.logo span {
  font-size: 0.75rem;
  color: var(--gray);
  letter-spacing: 5px;
  text-transform: uppercase;
}

p { margin-bottom: 10px; font-size: 0.9rem; color: var(--gray); }

.form-group {
  position: relative;
  margin: 35px 0;
  display: flex;
  flex-direction: column;
}

.form-group input {
  width: 100%;
  padding: 12px 10px;
  background: transparent;
  border: none;
  border-bottom: 2px solid #333;
  color: white;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.3s ease;
}

.form-group input#pass {
  padding-right: 40px !important;
}

.form-group input:focus {
  border-bottom-color: var(--primary);
}

.form-group label {
  position: absolute;
  left: 10px;
  top: 12px;
  color: var(--gray);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.form-group input:focus ~ label,
.form-group input:valid ~ label {
  top: -22px;
  left: 0;
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 500;
}

.toggle-pass {
  position: absolute !important;
  right: 5px !important;
  top: 12px !important;
  background: none !important;
  border: none !important;
  color: var(--gray);
  cursor: pointer;
  padding: 5px !important;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  width: auto !important;
  height: auto !important;
  transition: color 0.3s ease;
}

.toggle-pass:hover { color: var(--primary); }
.toggle-pass svg { width: 18px; height: 18px; }

button#loginBtn {
  width: 100%;
  padding: 16px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px var(--primary-glow);
  margin-top: 10px;
}

button#loginBtn:hover {
  background: #ff0000;
  transform: scale(1.02);
  box-shadow: 0 6px 20px var(--primary-glow);
}

button#loginBtn:active { transform: scale(0.98); }

button:disabled {
  background: #2a2a2a;
  color: #555;
  cursor: not-allowed;
  box-shadow: none;
}

.error-msg {
  color: #ff3333;
  margin-top: 20px;
  font-size: 0.9rem;
  display: none;
}