:root {
  --bg: #04150c;
  --bg-2: #0a2d1a;
  --panel: #06160d;
  --lime: #98f93f;
  --lime-dark: #7be02a;
  --ink: #07200f;
  --text: #ffffff;
  --muted: #9fb8a8;
  --error: #ff7a7a;
}

* { box-sizing: border-box; margin: 0; }

html, body { height: 100%; }

body {
  font-family: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background-color: var(--bg);
  /* Boxer artwork sits at assets/bg.jpg, darkened by the gradients below. */
  background-image:
    radial-gradient(ellipse at 50% 30%, rgba(30, 110, 55, 0.35), transparent 60%),
    linear-gradient(to bottom, rgba(3, 18, 10, 0.72), rgba(3, 18, 10, 0.88)),
    url("assets/bg.jpg");
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

.stage {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 40px 20px;
}

/* Logo */
.logo { text-align: center; }

.logo h1 {
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-style: italic;
  font-weight: 900;
  font-size: clamp(72px, 14vw, 128px);
  line-height: 0.9;
  letter-spacing: -0.01em;
  -webkit-text-stroke: 5px #04150c;
  paint-order: stroke fill;
  filter: drop-shadow(0 6px 0 rgba(0, 0, 0, 0.35));
}

.tem { color: #fff; }
.rush { color: var(--lime); }

.sub {
  margin-top: 6px;
  font-weight: 500;
  font-size: clamp(16px, 2.6vw, 24px);
  letter-spacing: 0.7em;
  padding-left: 0.7em; /* balances trailing letter-spacing */
}

/* Checker */
.checker {
  width: min(610px, 100%);
}

.field {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 66px;
  padding: 0 22px;
  background: rgba(6, 22, 13, 0.82);
  border: 1.5px solid rgba(152, 249, 63, 0.55);
  border-radius: 18px;
  color: var(--muted);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field:focus-within {
  border-color: var(--lime);
  box-shadow: 0 0 0 3px rgba(152, 249, 63, 0.18);
}

.field-icon { width: 26px; height: 26px; flex: none; color: #c9d4cd; }

.field input {
  flex: 1;
  min-width: 0;
  background: none;
  border: 0;
  outline: 0;
  color: var(--text);
  font: inherit;
  font-size: 17px;
}

.field input::placeholder { color: var(--muted); }

.hint {
  min-height: 22px;
  margin: 8px 6px 4px;
  font-size: 14px;
  color: var(--error);
}

.btn {
  width: 100%;
  height: 62px;
  border: 0;
  border-radius: 16px;
  background: var(--lime);
  color: var(--ink);
  font: 800 21px "Manrope", sans-serif;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.btn:hover { background: var(--lime-dark); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, .close:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.btn:disabled { opacity: 0.7; cursor: progress; }

/* Popup */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(2, 10, 6, 0.78);
  backdrop-filter: blur(4px);
}

.overlay[hidden] { display: none; }

.modal {
  position: relative;
  width: min(430px, 100%);
  padding: 20px 20px 22px;
  background: var(--panel);
  border: 1.5px solid var(--lime);
  border-radius: 22px;
  text-align: center;
  animation: pop 0.22s ease-out;
}

@keyframes pop {
  from { opacity: 0; transform: scale(0.94); }
  to { opacity: 1; transform: scale(1); }
}

.close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: rgba(4, 21, 12, 0.75);
  color: #fff;
  cursor: pointer;
}

.close svg { width: 18px; height: 18px; }

.modal-img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  background: #0b2416;
}

.modal-img[hidden] { display: none; }

.modal-text {
  margin: 20px 0 18px;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
}

.modal-text .hl { color: var(--lime); }
.modal.no .modal-text { font-size: 22px; font-weight: 700; }

.modal .btn { height: 56px; font-size: 20px; }

@media (max-width: 520px) {
  .stage { gap: 24px; justify-content: flex-start; padding-top: 22vh; }
  .field { height: 54px; padding: 0 16px; border-radius: 14px; }
  .field input { font-size: 15px; }
  .field-icon { width: 22px; height: 22px; }
  .btn { height: 54px; font-size: 18px; border-radius: 14px; }
  .modal-text { font-size: 24px; }
  .modal.no .modal-text { font-size: 19px; }
}

@media (prefers-reduced-motion: reduce) {
  .modal { animation: none; }
}