/**
 * @Auteur : Venance Kaou
 * @Projet : Calculatrice
 * @Date : Avril 2026 
 */

@import url("https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Syne:wght@400;700&display=swap");

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #f0ede8;
  font-family: "Syne", sans-serif;
}

.calculator {
  background: #1a1a1a;
  border-radius: 24px;
  padding: 2rem;
  width: 360px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.calc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.calc-label {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #555;
  font-family: "DM Mono", monospace;
}

/* Écran */
.display {
  background: #111;
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  min-height: 90px;
  justify-content: flex-end;
  border: 1px solid #2a2a2a;
}

#expression {
  font-family: "DM Mono", monospace;
  font-size: 13px;
  color: #555;
  min-height: 18px;
}

#result {
  font-family: "DM Mono", monospace;
  font-size: 36px;
  font-weight: 500;
  color: #f0ede8;
  letter-spacing: -0.02em;
  transition: color 0.2s;
}

/* Champs */
.inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #555;
  font-family: "DM Mono", monospace;
}

input[type="number"] {
  background: #111;
  border: 1px solid #2a2a2a;
  border-radius: 10px;
  padding: 0.65rem 0.9rem;
  font-size: 16px;
  font-family: "DM Mono", monospace;
  color: #f0ede8;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
  -moz-appearance: textfield;
  appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

input[type="number"]:focus {
  border-color: #c8ff5e;
}

/* Boutons opération */
.operations {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.btn-op {
  background: #252525;
  border: 1px solid #2e2e2e;
  border-radius: 10px;
  color: #f0ede8;
  font-size: 20px;
  font-family: "DM Mono", monospace;
  padding: 0.75rem 0;
  cursor: pointer;
  transition:
    background 0.15s,
    transform 0.1s,
    border-color 0.15s;
}

.btn-op:hover {
  background: #2e2e2e;
  border-color: #c8ff5e;
  color: #c8ff5e;
}

.btn-op:active {
  transform: scale(0.95);
}

.btn-op.active {
  background: #c8ff5e;
  color: #1a1a1a;
  border-color: #c8ff5e;
}

/* Reset */
#btn-reset {
  background: transparent;
  border: 1px solid #2e2e2e;
  border-radius: 10px;
  color: #555;
  font-size: 13px;
  font-family: "DM Mono", monospace;
  letter-spacing: 0.08em;
  padding: 0.6rem;
  cursor: pointer;
  transition:
    border-color 0.2s,
    color 0.2s;
  width: 100%;
}

#btn-reset:hover {
  border-color: #555;
  color: #f0ede8;
}

/* Message d'erreur */
#error-msg {
  font-family: "DM Mono", monospace;
  font-size: 12px;
  color: #e05555;
  text-align: center;
  min-height: 16px;
}