/* ═══════════════════════════════
   RESET & TOKENS
═══════════════════════════════ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  --or: #ff6b00;
  --or-a: rgba(255, 107, 0, 0.12);
  --or-lo: rgba(255, 107, 0, 0.07);
  --bk: #090909;
  --dk: #0f0f0f;
  --dkr: #0c0c0c;
  --tx: #e0e0e0;
  --txd: #585858;
  --m1: "Courier Prime", monospace;
  --m2: "Share Tech Mono", monospace;
  --hh: 68px;
  --pad: clamp(14px, 4vw, 52px);
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bk);
  color: var(--tx);
  font-family: var(--m1);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--or);
  outline-offset: 3px;
}
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
.bs-spin {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(255, 107, 0, 0.15);
  border-top-color: var(--or);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.bs-loading {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(40px, 8vw, 80px) var(--pad);
  background: var(--bk);
}

.bs-loading-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.bs-load-txt {
  font-family: var(--m2);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--txd);
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.4;
  }
  50% {
    opacity: 1;
  }
}
/* scanlines */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9000;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.018) 2px,
    rgba(0, 0, 0, 0.018) 4px
  );
}
/* grid */
.gbg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255, 107, 0, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 107, 0, 0.022) 1px, transparent 1px);
  background-size: 60px 60px;
}
/* skip */
.skip {
  position: absolute;
  top: -80px;
  left: 16px;
  z-index: 9999;
  background: var(--or);
  color: #000;
  font-family: var(--m2);
  font-size: 11px;
  letter-spacing: 2px;
  padding: 8px 20px;
  text-decoration: none;
  border-radius: 2px;
  transition: top 0.2s;
}
.skip:focus {
  top: 14px;
}

/* ═══════════════════════════════
   HEADER
═══════════════════════════════ */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  height: var(--hh);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: 0 clamp(12px, 3vw, 32px);
  gap: clamp(8px, 2vw, 18px);
  background: rgba(9, 9, 9, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 107, 0, 0.18);
  transition: box-shadow 0.3s;
}

.hd-ju {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.ju-box {
  width: 44px;
  height: 44px;
  border: 2px solid var(--or);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}
.ju-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 4px; /* Prevents touching the border */
  display: block;
}
.hd-ju:hover .ju-box {
  background: transparent;
}
.hd-ju:hover .ju-t,
.hd-ju:hover .ju-s {
  color: #000;
}
.ju-lbl {
  font-family: var(--m2);
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--txd);
  text-transform: uppercase;
  line-height: 1.55;
}
.ju-lbl strong {
  display: block;
  color: var(--tx);
  font-size: 11px;
}

nav.desk {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  flex-wrap: wrap;
}
nav.desk a {
  font-family: var(--m2);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--txd);
  text-decoration: none;
  padding: 6px 11px;
  border-radius: 2px;
  transition:
    color 0.2s,
    background 0.2s;
  white-space: nowrap;
}
nav.desk a:hover {
  color: var(--or);
  background: var(--or-lo);
}
nav.desk a.cur {
  color: var(--or);
}
.hd-bt {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-direction: row-reverse;
  text-decoration: none;
  flex-shrink: 0;
}
.bt-box {
  width: 44px;
  height: 44px;
  border: 2px solid var(--or);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}
.bt-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 4px; /* Prevents touching the border */
  display: block;
}
.hd-bt:hover .bt-box {
  background: transparent;
}

.bt-lbl {
  font-family: var(--m2);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--txd);
  text-align: right;
  line-height: 1.55;
  text-transform: uppercase;
}
.bt-lbl strong {
  display: block;
  color: var(--or);
  font-size: 13px;
  letter-spacing: 3px;
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 6px;
  flex-shrink: 0;
}
.burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--or);
  border-radius: 1px;
  transition: all 0.3s;
}
.burger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.burger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.burger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

nav.mob {
  display: none;
  position: fixed;
  top: var(--hh);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(9, 9, 9, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 490;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
nav.mob.open {
  display: flex;
}
nav.mob a {
  font-family: var(--m2);
  font-size: 20px;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--txd);
  text-decoration: none;
  padding: 14px 32px;
  width: 100%;
  text-align: center;
  transition: color 0.2s;
}
nav.mob a:hover {
  color: var(--or);
}

/* ═══════════════════════════════
   BANNER
═══════════════════════════════ */
.banner {
  position: relative;
  z-index: 1;
  padding: calc(var(--hh) + 48px) var(--pad) 36px;
  background: var(--dkr);
  border-bottom: 1px solid rgba(255, 107, 0, 0.1);
  overflow: hidden;
}
.banner::after {
  content: "BUS";
  position: absolute;
  right: -10px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--m2);
  font-size: clamp(100px, 22vw, 220px);
  color: rgba(255, 107, 0, 0.025);
  letter-spacing: -5px;
  pointer-events: none;
  user-select: none;
  line-height: 1;
}
.ban-in {
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.ban-eye {
  font-family: var(--m2);
  font-size: 10px;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--or);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0;
  animation: up 0.6s 0.1s forwards;
}
.ban-eye::before {
  content: "//";
  opacity: 0.4;
}
.ban-h {
  font-family: var(--m2);
  font-size: clamp(32px, 7vw, 68px);
  line-height: 0.92;
  color: #fff;
  opacity: 0;
  animation: up 0.7s 0.2s forwards;
}
.ban-h em {
  font-style: normal;
  color: var(--or);
}
.ban-sub {
  font-family: var(--m1);
  font-size: 14px;
  color: var(--txd);
  margin-top: 10px;
  letter-spacing: 0.5px;
  opacity: 0;
  animation: up 0.7s 0.3s forwards;
}

/* badge */
.ban-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border-radius: 3px;
  flex-shrink: 0;
  background: rgba(100, 160, 255, 0.08);
  border: 1px solid rgba(100, 160, 255, 0.25);
  font-family: var(--m2);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #64a0ff;
  opacity: 0;
  animation: up 0.7s 0.4s forwards;
}
.ban-badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #64a0ff;
  animation: pd 2s infinite;
  flex-shrink: 0;
}
@keyframes up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes pd {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.3;
    transform: scale(0.6);
  }
}

/* ═══════════════════════════════
   INFO STRIP
═══════════════════════════════ */
.info-strip {
  position: sticky;
  top: var(--hh);
  z-index: 200;
  background: rgba(9, 9, 9, 0.96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 107, 0, 0.1);
}
.is-in {
  max-width: 1280px;
  margin: 0 auto;
  padding: 10px var(--pad);
  display: flex;
  align-items: center;
  gap: clamp(12px, 3vw, 32px);
  flex-wrap: wrap;
}
.is-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--m2);
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--txd);
  white-space: nowrap;
}
.is-item span {
  color: var(--tx);
}
.is-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--or);
  flex-shrink: 0;
}
.is-right {
  margin-left: auto;
}
.open-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--m2);
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--or);
  background: transparent;
  border: 1px solid rgba(255, 107, 0, 0.3);
  padding: 6px 16px;
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
  transition:
    background 0.2s,
    color 0.2s;
}
.open-btn:hover {
  background: var(--or);
  color: #000;
}

/* ═══════════════════════════════
   MAIN / PDF VIEWER
═══════════════════════════════ */
main {
  position: relative;
  z-index: 1;
  background: var(--bk);
}
.viewer-wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(24px, 4vw, 48px) var(--pad);
}

/* PDF frame container */
.pdf-shell {
  position: relative;
  background: var(--dkr);
  border: 1px solid rgba(255, 107, 0, 0.15);
  border-radius: 6px;
  overflow: hidden;
}
.pdf-shell::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--or), transparent);
  z-index: 2;
  pointer-events: none;
}

/* toolbar above PDF */
.pdf-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 107, 0, 0.1);
  background: rgba(255, 107, 0, 0.03);
}
.pdf-title {
  font-family: var(--m2);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--or);
  display: flex;
  align-items: center;
  gap: 8px;
}
.pdf-title::before {
  content: "📄";
  font-size: 13px;
}
.pdf-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.pdf-btn {
  font-family: var(--m2);
  font-size: 9px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid rgba(255, 107, 0, 0.3);
  color: var(--or);
  background: transparent;
  transition:
    background 0.2s,
    color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.pdf-btn:hover {
  background: var(--or);
  color: #000;
}
.pdf-btn.primary {
  background: var(--or);
  color: #000;
  border-color: var(--or);
}
.pdf-btn.primary:hover {
  background: #e05e00;
}

/* the iframe */
.pdf-frame {
  width: 100%;
  height: clamp(500px, 80vh, 1000px);
  border: none;
  display: block;
  background: #1a1a1a;
}

/* blocked state */
.pdf-blocked {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  gap: 16px;
  padding: 48px 24px;
  text-align: center;
}
.pdf-blocked-ico {
  font-size: 40px;
  margin-bottom: 4px;
}
.pdf-blocked-title {
  font-family: var(--m2);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--txd);
}
.pdf-blocked-sub {
  font-family: var(--m1);
  font-size: 13px;
  color: var(--txd);
  line-height: 1.8;
  max-width: 420px;
}
.pdf-blocked-sub a {
  color: var(--or);
  text-decoration: none;
}
.pdf-blocked-sub a:hover {
  text-decoration: underline;
}

/* how-to note */
.how-to {
  margin-top: 24px;
  padding: 20px 24px;
  background: rgba(255, 107, 0, 0.04);
  border: 1px solid rgba(255, 107, 0, 0.1);
  border-radius: 4px;
}
.how-to-title {
  font-family: var(--m2);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--or);
  margin-bottom: 12px;
}
.how-to-body {
  font-family: var(--m1);
  font-size: 13px;
  color: var(--txd);
  line-height: 1.9;
}
.how-to-body strong {
  color: var(--tx);
}
.how-to-body code {
  font-family: var(--m2);
  font-size: 11px;
  letter-spacing: 0.5px;
  background: rgba(255, 107, 0, 0.1);
  border: 1px solid rgba(255, 107, 0, 0.2);
  padding: 1px 8px;
  border-radius: 2px;
  color: var(--or);
}

/* ═══════════════════════════════
   FOOTER
═══════════════════════════════ */
footer {
  position: relative;
  z-index: 1;
  background: var(--dkr);
  border-top: 1px solid rgba(255, 107, 0, 0.15);
  padding: clamp(36px, 5.5vw, 70px) var(--pad) 28px;
}
.f-contact {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
}

.f-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  color: var(--txd);
  transition: all 0.2s;
}

.f-icon svg {
  width: 18px;
  height: 18px;
}

.f-icon:hover {
  border-color: var(--or);
  color: var(--or);
  transform: translateY(-2px);
}
.fg {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: clamp(28px, 4.5vw, 64px);
  max-width: 1300px;
  margin: 0 auto 44px;
}
.fb-n {
  font-family: var(--m2);
  font-size: 22px;
  color: var(--or);
  letter-spacing: 5px;
  margin-bottom: 10px;
}
.fb-i {
  font-size: 11.5px;
  color: var(--txd);
  line-height: 1.9;
}
.fct {
  font-family: var(--m2);
  font-size: 9px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--or);
  margin-bottom: 16px;
}
.fl {
  list-style: none;
}
.fl li {
  margin-bottom: 9px;
}
.fl a {
  font-size: 12px;
  color: var(--txd);
  text-decoration: none;
  transition: color 0.2s;
}
.fl a:hover {
  color: var(--or);
}
.fbot {
  max-width: 1300px;
  margin: 0 auto;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 107, 0, 0.07);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.fcpy {
  font-family: var(--m2);
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--txd);
}
.fcpy span {
  color: var(--or);
}
.fsoc {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.fsoc a {
  font-family: var(--m2);
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--txd);
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 5px 12px;
  border-radius: 2px;
  transition:
    border-color 0.2s,
    color 0.2s;
}
.fsoc a:hover {
  border-color: var(--or);
  color: var(--or);
}

/* ═══════════════════════════════
   RESPONSIVE
═══════════════════════════════ */
@media (max-width: 900px) {
  nav.desk {
    display: none;
  }
  .burger {
    display: flex;
  }
  .fg {
    grid-template-columns: 1fr 1fr;
  }
  .is-in {
    gap: 10px;
  }
}
@media (max-width: 560px) {
  .fg {
    grid-template-columns: 1fr;
  }
  .fbot {
    flex-direction: column;
    align-items: flex-start;
  }
  .ban-in {
    flex-direction: column;
    align-items: flex-start;
  }
  .pdf-actions {
    width: 100%;
  }
  .pdf-btn {
    flex: 1;
    justify-content: center;
  }
}