/* Style */

[hidden] {
  display: none !important;
}

body {
  font-family: "DM Sans", sans-serif;
  background-color: #0f172a;
  color: #e2e8f0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  text-transform: uppercase;
  font-size: 17px;
  font-weight: 700;
}

#form-grid {
  display: grid;
  grid-template-rows: 1fr 2fr 1fr 1fr;
  grid-template-columns: 1fr 4fr 1fr;
  height: 450px;
  width: 600px;
}

.card-front {
  grid-column: 1 / 3;
  grid-row: 1 / 3;
  display: grid;
  grid-template-columns: 2fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
  background: linear-gradient(135deg, #1e3a5f 0%, #0d1b2a 100%);
  box-shadow: 7px 7px 20px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  color: #ffffff;
  padding: 15px;
  border-radius: 10px;
}

.card-back {
  grid-column: 2 / 4;
  grid-row: 2 / 4;
  display: grid;
  grid-template-columns: 4fr 1fr;
  grid-template-rows: 1fr 0.5fr 1fr;
  background: linear-gradient(135deg, #1c1c2e 0%, #0d1117 100%);
  box-shadow: 7px 7px 20px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  padding: 15px;
}

/* Back Strip */

.card-back_stripe {
  grid-row: 1;
  grid-column: 1/3;
  background: linear-gradient(180deg, #c0c0c0 0%, #8a8a8a 50%, #c0c0c0 100%);
  width: 100%;
  height: 40px;
}

/* CVC Area */

.card-back_cvc-area {
  grid-column: 2;
  grid-row: 3;
  z-index: 1;
  text-align: center;
  margin-left: 10px;
}

.card-back_cvc-label {
  text-align: center;
  margin-top: 20px;
  color: #b8c8d9;
}
.card-back_cvc-input {
  width: 40px;
  height: 40px;
  margin: 0 auto;
  display: block;
  position: relative;
  z-index: 2;
  overflow: hidden;
  font-size: 17px;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  color: #ffffff;
  text-align: center;
}

/* Front Stuff */

.card-front_number-group {
  grid-column: 1;
  grid-row: 2;
}

.card-front_total {
  padding-top: 20px;
  font-size: 17px;
  text-align: left;
  color: #93c5fd;
}

.chip-icon {
  justify-self: right;
  font-size: 40px;
}

.card-holder {
  grid-column: 1;
  grid-row: 3;
  display: flex;
  flex-direction: column;
  width: 90%;
}
#cardExpiration {
  grid-column: 2;
  grid-row: 3;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-content: start;
  gap: 4px;
}
#cardExpiration label {
  grid-column: 1 / 3;
  color: #b8c8d9;
}

#month,
#year {
  min-width: 48px;
  min-height: 48px;
  box-sizing: border-box;
}

/* Error Message */
.form-error {
  grid-column: 1 / 3;
  grid-row: 4;
  color: #f87171;
  font-size: 12px;
  font-weight: 400;
  text-transform: none;
  align-self: center;
  margin: 0;
  padding: 0 5px;
}

/* Success Message */
.form-success {
  background: linear-gradient(135deg, #065f46 0%, #047857 100%);
  color: white;
  padding: 30px 50px;
  border-radius: 10px;
  text-align: center;
  font-size: 18px;
  box-shadow: 7px 7px 20px rgba(0, 0, 0, 0.7);
}

/* Submit Btn */
.form-grid_submit-row {
  grid-column: 3;
  grid-row: 4;
  margin-top: 6px;
  justify-content: center;
}
.form-grid_submit-row button {
  background-color: #2563eb;
  color: white;
  border: none;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  border-radius: 5px;
}
.form-grid_submit-row button:hover {
  background-color: #1d4ed8;
}

input {
  font-size: 17px;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  color: #ffffff;
}

input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.field-label {
  color: #b8c8d9;
}