@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

body {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 14px;
  line-height: 1.6;
  color: #ccc;
  background-color: #0a0a0a;
  overflow-x: hidden;
  margin: 0;
}

a {
  cursor: pointer;
  transition: all 200ms linear;
  text-decoration: none;
}

.link {
  color: #aaa;
}

.link:hover {
  color: #ff3300;
}

p {
  font-weight: 400;
  font-size: 14px;
  line-height: 1.6;
  color: #888;
}

h4 {
  font-weight: 600;
  color: #fff;
}

h6 span {
  padding: 0 20px;
  text-transform: uppercase;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
}

.section {
  position: relative;
  width: 100%;
  display: block;
}

.full-height {
  min-height: 100vh;
}

/* --- 3D Switch Toggle --- */
[type="checkbox"]:checked,
[type="checkbox"]:not(:checked) {
  position: absolute;
  left: -9999px;
}

.checkbox:checked + label,
.checkbox:not(:checked) + label {
  position: relative;
  display: block;
  text-align: center;
  width: 60px;
  height: 18px;
  border-radius: 10px;
  padding: 0;
  margin: 10px auto;
  cursor: pointer;
  background-color: #222;
  border: 1px solid #333;
}

.checkbox:checked + label:before,
.checkbox:not(:checked) + label:before {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: #fff;
  background-color: #ff3300;
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  content: '\f0e0'; /* FontAwesome Envelope İkonu */
  z-index: 20;
  top: -9px;
  left: -10px;
  font-size: 16px;
  transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  box-shadow: 0 4px 15px rgba(255, 51, 0, 0.4);
}

.checkbox:checked + label:before {
  transform: translateX(44px) rotate(-360deg);
  content: '\f1d8'; /* FontAwesome Paper Plane İkonu */
}

/* --- 3D Card Structural CSS --- */
.card-3d-wrap {
  position: relative;
  width: 440px;
  max-width: 100%;
  height: 440px;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  perspective: 800px;
  margin-top: 40px;
}

.card-3d-wrapper {
  width: 100%;
  height: 100%;
  position: absolute;    
  top: 0;
  left: 0;  
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  transition: all 600ms ease-out; 
}

.card-front, .card-back {
  width: 100%;
  height: 100%;
  background-color: #121212;
  border: 1px solid #222;
  position: absolute;
  border-radius: 12px;
  left: 0;
  top: 0;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.card-back {
  transform: rotateY(180deg);
}

.checkbox:checked ~ .card-3d-wrap .card-3d-wrapper {
  transform: rotateY(180deg);
}

.center-wrap {
  position: absolute;
  width: 100%;
  padding: 0 35px;
  top: 50%;
  left: 0;
  transform: translate3d(0, -50%, 35px) perspective(100px);
  z-index: 20;
  display: block;
  box-sizing: border-box;
}

/* --- Input Fields --- */
.form-group { 
  position: relative;
  display: block;
  margin-bottom: 15px;
  padding: 0;
}

.form-style {
  padding: 13px 20px 13px 50px;
  height: 48px;
  width: 100%;
  font-weight: 500;
  border-radius: 8px;
  font-size: 14px;
  line-height: 22px;
  letter-spacing: 0.5px;
  outline: none;
  color: #fff;
  background-color: #181818;
  border: 1px solid #282828;
  transition: all 200ms linear;
  box-sizing: border-box;
}

.form-style:focus,
.form-style:active {
  border-color: #ff3300;
  outline: none;
  box-shadow: 0 0 10px rgba(255, 51, 0, 0.2);
}

.input-icon {
  position: absolute;
  top: 0;
  left: 16px;
  height: 48px;
  font-size: 18px;
  line-height: 48px;
  text-align: left;
  color: #ff3300;
  transition: all 200ms linear;
}

.form-group input::placeholder {
  color: #666;
  opacity: 1;
}

.form-group input:focus::placeholder {
  opacity: 0;
}

/* --- Buttons --- */
.btn {  
  border-radius: 8px;
  height: 46px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  transition: all 200ms linear;
  padding: 0 30px;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: none;
  background-color: #ff3300;
  color: #fff;
  box-shadow: 0 8px 20px rgba(255, 51, 0, 0.3);
  cursor: pointer;
  width: 100%;
}

.btn:hover {  
  background-color: #e62e00;
  box-shadow: 0 8px 25px rgba(255, 51, 0, 0.5);
  transform: translateY(-1px);
}

.btn:active,
.btn:focus {  
  background-color: #cc2900;
  transform: translateY(1px);
}

/* --- Header Logo --- */
.logo {
  position: absolute;
  top: 30px;
  right: 30px;
  display: block;
  z-index: 100;
}

.logo span {
  font-size: 24px;
}