/* ===== Neumorphic Theme ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Arial', sans-serif;
  background-color: #ecf0f3; /* Soft background */
  color: #333;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

/* Main container – raised card */
.container {
  background: #ecf0f3;
  padding: 40px;
  border-radius: 30px;
  box-shadow: 13px 13px 20px #cbced1,
              -13px -13px 20px #ffffff;
  max-width: 450px;
  width: 100%;
}

h1 {
  color: #e67e22;
  text-align: center;
  margin-bottom: 30px;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 1px;
}

/* Form – no extra card, just spacing */
form {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

label span {
  font-weight: 700;
  color: #666;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-left: 10px;
}

/* Inputs – inset (pressed) neumorphic style */
input {
  width: 100%;
  padding: 14px 18px;
  border: none;
  border-radius: 16px;
  background: #ecf0f3;
  box-shadow: inset 8px 8px 8px #cbced1,
              inset -8px -8px 8px #ffffff;
  font-size: 16px;
  color: #333;
  outline: none;
  transition: box-shadow 0.3s ease;
}

input:focus {
  box-shadow: inset 6px 6px 6px #cbced1,
              inset -6px -6px 6px #ffffff,
              0 0 0 2px #e67e2233; /* subtle orange glow */
}

input::placeholder {
  color: #aaa;
}

/* Button – raised neumorphic with orange accent */
button {
  background: #ecf0f3;
  color: #e67e22;
  border: none;
  padding: 14px 20px;
  font-weight: 700;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 16px;
  cursor: pointer;
  box-shadow: 6px 6px 12px #cbced1,
              -6px -6px 12px #ffffff;
  transition: all 0.2s ease;
}

button:hover {
  box-shadow: 4px 4px 8px #cbced1,
              -4px -4px 8px #ffffff;
  color: #cf641c;
}

button:active {
  box-shadow: inset 6px 6px 12px #cbced1,
              inset -6px -6px 12px #ffffff;
  color: #b8530f;
  transform: scale(0.98);
}

/* Divider line – neumorphic ridge */
hr {
  border: 0;
  height: 3px;
  background: #ecf0f3;
  box-shadow: 0 2px 4px #cbced1,
              0 -2px 4px #ffffff;
  margin: 30px 0 20px 0;
  border-radius: 10px;
}

/* Result display – raised card */
[data-result] {
  background: #ecf0f3;
  padding: 20px;
  text-align: center;
  font-size: 22px;
  font-weight: 700;
  color: #e67e22;
  border-radius: 20px;
  box-shadow: 8px 8px 16px #cbced1,
              -8px -8px 16px #ffffff;
  transition: all 0.3s ease;
  min-height: 40px;
  word-break: break-word;
}

/* Fade-in animation (same as before) */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
[data-result] {
  animation: fadeIn 0.8s ease-out;
}

/* ===== Error Styles (Neumorphic) ===== */
.error-message {
  color: #ff3860;
  background: #fff3f3;
  border-left: 4px solid #ff3860;
  padding: 15px;
  border-radius: 16px;
  margin-bottom: 20px;
  box-shadow: 4px 4px 8px #f5cfcf,
              -4px -4px 8px #ffffff;
  font-weight: 600;
}

/* Critical Error – full-screen overlay with neumorphic card */
.critical-error {
  background: #ffe0e0;
  color: #c70000;
  text-align: center;
  width: 100vw;
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 24px;
  font-weight: 700;
  padding: 0 30px;
  box-shadow: 0 0 30px rgba(0,0,0,0.2);
  border-radius: 0; /* full screen */
}