/* =========================
   GLOBAL RESET
========================= */
* {
  box-sizing: border-box;
  font-family: "Segoe UI", system-ui, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

body {
  min-height: 100vh;
  margin: 0;
  background: radial-gradient(circle at top, #1a1a2e, #0f0f1a);
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
}

/* =========================
   LAYOUT
========================= */
.container {
  width: 100%;
  padding: 20px;
}

.card {
  max-width: 440px;
  margin: auto;
  background: linear-gradient(145deg, #161633, #0f0f22);
  padding: 32px;
  border-radius: 20px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.65);
  animation: cardEnter 0.7s ease;
}

@keyframes cardEnter {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

h2 {
  text-align: center;
  margin-bottom: 6px;
}

.sub {
  text-align: center;
  color: #b6b6c8;
  margin-bottom: 24px;
  font-size: 14px;
}

/* =========================
   FORM
========================= */
label {
  display: block;
  margin-top: 16px;
  font-size: 14px;
  color: #cfcfe6;
}

input,
select {
  width: 100%;
  padding: 14px;
  margin-top: 8px;
  background: #0f0f22;
  border-radius: 12px;
  border: 1px solid transparent;
  color: #fff;
  font-size: 15px;
  transition: border 0.25s, box-shadow 0.25s, transform 0.15s;
}

input::placeholder {
  color: #777;
}

input:focus,
select:focus {
  outline: none;
  border-color: #00ffd5;
  box-shadow: 0 0 0 2px rgba(0, 255, 213, 0.25);
  transform: translateY(-1px);
}

/* =========================
   BUTTONS
========================= */
.buttons {
  margin-top: 22px;
  display: grid;
  gap: 12px;
}

button {
  padding: 15px;
  border: none;
  border-radius: 14px;
  font-weight: 600;
  cursor: pointer;
  background: linear-gradient(135deg, #4e005e, #cf00ad);
  color: #ffffff;
  font-size: 15px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(35, 185, 255, 0.456);
}

button:active {
  transform: translateY(0);
  opacity: 0.85;
}

/* =========================
   POPUPS
========================= */
.popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.popup-box {
  background: #14142b;
  padding: 28px;
  border-radius: 18px;
  text-align: center;
  max-width: 90%;
  width: 360px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7);
  animation: popupIn 0.25s ease;
}

@keyframes popupIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.popup-box h3 {
  margin-bottom: 10px;
}

.popup-box p {
  color: #00ffd5;
  font-weight: bold;
  margin-bottom: 12px;
}

.popup-note {
  display: block;
  margin-top: 8px;
  color: #ffcc00;
  font-size: 13px;
}

/* =========================
   POPUP BUTTONS
========================= */
.copy-btn {
  margin-top: 10px;
  padding: 10px 16px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  background: #0f0f22;
  color: #fff;
  font-weight: 600;
}

.confirm-btn {
  margin-top: 16px;
  padding: 14px 22px;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  background: linear-gradient(135deg, #00ffd5, #00b3ff);
  font-weight: 700;
}

/* =========================
   LOADING
========================= */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  color: white;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.loader {
  width: 52px;
  height: 52px;
  border: 4px solid #2a2a4d;
  border-top: 4px solid #00ffd5;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 14px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* =========================
   MOBILE OPTIMIZATION
========================= */
@media (max-width: 480px) {
  .card {
    padding: 24px;
    border-radius: 16px;
  }

  button {
    font-size: 14px;
    padding: 14px;
  }
}


/* =========================
   BLENDED HEADER (NO BAR)
========================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10000;

  /* Fully blended background */
  background: linear-gradient(
    to bottom,
    rgba(5, 5, 15, 0.85),
    rgba(5, 5, 15, 0.55),
    rgba(5, 5, 15, 0)
  );

  backdrop-filter: blur(12px);
  animation: headerFadeIn 0.8s ease;
}

@keyframes headerFadeIn {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.header-container {
  max-width: 1400px;
  margin: auto;
  padding: 22px 28px;

  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Brand */
.brand {
  font-size: 26px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.5px;
}

/* =========================
   NAV LINKS
========================= */
.header-nav {
  display: flex;
  gap: 30px;
}

.header-nav a {
  position: relative;
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  color: #9ca3af;
  transition: color 0.3s ease;
}

.header-nav a:hover {
  color: #ffffff;
}

/* =========================
   HOME ANIMATION (ACTIVE)
========================= */
.header-nav a.home {
  color: #ffffff;
}

.header-nav a.home::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -8px;
  width: 18px;
  height: 3px;
  background: linear-gradient(90deg, #a855f7, #ec4899);
  border-radius: 10px;
  transform: translateX(-50%);
  animation: homePulse 1.6s ease-in-out infinite;
}

@keyframes homePulse {
  0% {
    opacity: 0.4;
    width: 12px;
  }
  50% {
    opacity: 1;
    width: 28px;
  }
  100% {
    opacity: 0.4;
    width: 12px;
  }
}

/* =========================
   CONTENT OFFSET
========================= */
body {
  padding-top: 90px;
}

/* =========================
   MOBILE OPTIMIZATION
========================= */
@media (max-width: 600px) {
  .header-container {
    padding: 18px 20px;
  }

  .brand {
    font-size: 22px;
  }

  .header-nav {
    gap: 20px;
  }

  .header-nav a {
    font-size: 14px;
  }
}