/* ============================================================
   GG GO — ANASAYFA CSS (index.css)
   ============================================================ */

/* ===== HERO DRIVE SECTION ===== */
#drive-section {
  position: relative;
  height: 600vh;
}
#drive-pin {
  position: sticky;
  top: var(--total-header-h);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--total-header-h));
  height: calc(100dvh - var(--total-header-h));
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Backgrounds */
.drive-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 100%, rgba(20,0,0,0.8) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 50%, #080808 0%, #000 80%);
}
.drive-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 3px, rgba(255,255,255,0.006) 3px, rgba(255,255,255,0.006) 4px),
    repeating-linear-gradient(90deg, transparent, transparent 70px, rgba(255,255,255,0.01) 70px, rgba(255,255,255,0.01) 71px);
  pointer-events: none;
}

/* Track canvas */
#track-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
}

/* Speed Lines */
.speed-lines {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: space-around;
  align-items: stretch;
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 4;
}
.sl {
  width: 1.5px;
  background: linear-gradient(to bottom, transparent 0%, var(--blue) 50%, transparent 100%);
  animation: sl-flow 0.4s linear infinite;
  transform: translateY(-100%);
  opacity: 0.5;
}
.sl:nth-child(2n) {
  background: linear-gradient(to bottom, transparent 0%, var(--red) 50%, transparent 100%);
  width: 1px;
  opacity: 0.3;
}
.sl:nth-child(3n) { width: 2px; opacity: 0.15; }
@keyframes sl-flow { from { transform: translateY(-100%); } to { transform: translateY(100%); } }
.sl1{animation-duration:0.35s} .sl2{animation-duration:0.45s} .sl3{animation-duration:0.30s}
.sl4{animation-duration:0.50s} .sl5{animation-duration:0.38s} .sl6{animation-duration:0.42s}
.sl7{animation-duration:0.28s} .sl8{animation-duration:0.55s}

/* Horizontal Speed Lines */
.h-speed-lines {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 4;
}
.hsl {
  height: 1px;
  background: linear-gradient(to right, transparent 0%, rgba(255,26,26,0.7) 50%, transparent 100%);
  animation: hsl-flow 0.5s linear infinite;
  transform: translateX(-100%);
}
.hsl:nth-child(2n) { background: linear-gradient(to right, transparent 0%, rgba(0,168,255,0.5) 50%, transparent 100%); }
@keyframes hsl-flow { from { transform: translateX(-100%); } to { transform: translateX(100%); } }
.hsl1{animation-duration:0.40s} .hsl2{animation-duration:0.55s} .hsl3{animation-duration:0.35s}
.hsl4{animation-duration:0.48s} .hsl5{animation-duration:0.60s}

/* Brake Glow */
.brake-glow {
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 220px;
  background: radial-gradient(ellipse at 50% 100%, rgba(255,26,26,0.9) 0%, transparent 70%);
  opacity: 0;
  pointer-events: none;
  filter: blur(25px);
  z-index: 4;
}

/* Kart wrapper */
.kart-wrapper {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(580px, 72vw);
  transform-origin: center center;
  z-index: 10;
  will-change: transform;
}
.kart-img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: auto;
  opacity: 0;
  will-change: transform, opacity;
  filter: drop-shadow(0 0 40px rgba(255,26,26,0.25));
}
#img-on { opacity: 1; }

/* Phase Texts */
.phase-text {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  z-index: 20;
  will-change: transform, opacity;
}
#text-evre1 {
  bottom: 8vh;
  left: 0; right: 0;
  text-align: center;
}
.tag-line {
  font-family: var(--font-syn);
  font-size: clamp(11px, 1.5vw, 14px);
  letter-spacing: 0.35em;
  color: var(--red);
  display: block;
  margin-bottom: 12px;
  text-shadow: 0 0 20px var(--red);
}
.hero-headline {
  font-family: var(--font-syn);
  font-size: clamp(48px, 9vw, 120px);
  font-weight: 700;
  line-height: 0.9;
  background: linear-gradient(135deg, #fff 40%, #666 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-right { right: 5vw; top: 50%; transform: translateY(-50%); text-align: right; }
.text-left  { left: 5vw;  top: 50%; transform: translateY(-50%); }
.text-bottom { bottom: 8vh; left: 0; right: 0; text-align: center; }
.spec-label {
  font-family: var(--font-syn);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--red);
  margin-bottom: 8px;
  display: block;
  text-shadow: 0 0 15px var(--red);
}
.spec-title {
  font-family: var(--font-syn);
  font-size: clamp(28px, 5vw, 64px);
  font-weight: 700;
  line-height: 0.95;
}
.spec-sub {
  font-family: var(--font-raj);
  font-size: 16px;
  color: var(--grey-light);
  letter-spacing: 0.1em;
  margin-top: 12px;
  display: block;
}

/* Evre2 text card */
#text-evre2 {
  background: linear-gradient(135deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.5) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-left: 2px solid rgba(255,26,26,0.5);
  border-radius: 8px;
  padding: 24px 32px;
  max-width: min(340px, 40vw);
}

/* Glass Panel (Evre 4) */
.glass-panel {
  position: absolute;
  left: 5vw; top: 50%;
  transform: translateY(-50%);
  width: min(300px, 32vw);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 16px;
  padding: 28px;
  opacity: 0;
  z-index: 20;
}
.gp-title {
  font-family: var(--font-syn);
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--red);
  margin-bottom: 20px;
  text-shadow: 0 0 10px var(--red);
}
.gp-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.gp-list li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding-bottom: 10px;
}
.gp-key { font-family: var(--font-raj); font-size: 13px; color: var(--grey); }
.gp-val { font-family: var(--font-raj); font-size: 13px; font-weight: 600; }

/* Progress Bar */
.drive-progress {
  position: absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  width: min(380px, 60vw);
  height: 2px;
  background: rgba(255,255,255,0.08);
  border-radius: 2px;
  z-index: 30;
}
.dp-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(to right, var(--red), var(--blue));
  border-radius: 2px;
  box-shadow: 0 0 8px var(--red);
}
.phase-labels {
  position: absolute;
  bottom: 14px; left: 50%;
  transform: translateX(-50%);
  width: min(380px, 60vw);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-syn);
  font-size: 8px;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.25);
  z-index: 30;
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 60px; left: 50%;
  transform: translateX(-50%);
  z-index: 25;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 1;
  transition: opacity 0.5s;
}
.scroll-hint-text {
  font-family: var(--font-syn);
  font-size: 9px;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.3);
}
.scroll-hint-mouse {
  width: 22px;
  height: 34px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 11px;
  position: relative;
}
.scroll-hint-wheel {
  width: 2px;
  height: 6px;
  background: var(--red);
  border-radius: 1px;
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
  animation: wheel-scroll 1.5s infinite;
}
@keyframes wheel-scroll {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(14px); }
}

/* ===== ENGINEERING SUMMARY SECTION ===== */
#engineering {
  position: relative;
  background: #040404;
  padding: 120px 0;
  overflow: hidden;
}
.eng-bg-text {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-syn);
  font-size: clamp(80px, 18vw, 260px);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0,168,255,0.05);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}
.eng-header {
  text-align: center;
  margin-bottom: 80px;
  position: relative;
  z-index: 2;
}
.eng-header .section-tag { justify-content: center; }
.eng-header .section-tag::before { display: none; }
.eng-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
  z-index: 2;
}
.eng-card {
  padding: 40px 32px;
  border-radius: 16px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.eng-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--red), var(--blue));
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}
.eng-card:hover::before { transform: scaleX(1); }
.eng-card:hover {
  background: rgba(255,255,255,0.04);
  border-color: rgba(0,168,255,0.15);
  transform: translateY(-8px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.6);
}
.eng-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: rgba(255,26,26,0.08);
  border: 1px solid rgba(255,26,26,0.15);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
  transition: all var(--transition);
}
.eng-card:hover .eng-icon {
  background: rgba(0,168,255,0.1);
  border-color: rgba(0,168,255,0.3);
  box-shadow: 0 0 20px rgba(0,168,255,0.2);
}
.eng-icon svg { width: 26px; height: 26px; color: var(--red); transition: color var(--transition); }
.eng-card:hover .eng-icon svg { color: var(--blue); }
.eng-card-title {
  font-family: var(--font-syn);
  font-size: clamp(14px, 1.5vw, 18px);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.eng-card-text {
  font-family: var(--font-raj);
  font-size: 15px;
  line-height: 1.7;
  color: var(--grey-light);
}
.eng-stat {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  gap: 24px;
}
.eng-stat-item { display: flex; flex-direction: column; gap: 2px; }
.eng-stat-num {
  font-family: var(--font-syn);
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
}
.eng-stat-lbl {
  font-family: var(--font-raj);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--grey);
}

/* ===== PRE-REGISTRATION SECTION ===== */
#pre-register {
  position: relative;
  padding: 140px 0;
  overflow: hidden;
}
.prereg-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(255,26,26,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(0,168,255,0.04) 0%, transparent 60%),
    #000;
}
.prereg-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.prereg-content { }
.prereg-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  border: 1px solid rgba(255,26,26,0.3);
  border-radius: 40px;
  background: rgba(255,26,26,0.06);
  font-family: var(--font-syn);
  font-size: 9px;
  letter-spacing: 0.25em;
  color: var(--red);
  margin-bottom: 32px;
}
.prereg-badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 8px var(--red);
  animation: pulse-dot 1.2s ease-in-out infinite;
}
@keyframes pulse-dot { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.4;transform:scale(0.7)} }

.prereg-h1 {
  font-family: var(--font-syn);
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: 24px;
}
.prereg-desc {
  font-family: var(--font-raj);
  font-size: 17px;
  line-height: 1.8;
  color: var(--grey-light);
  margin-bottom: 32px;
}
.prereg-perks {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.prereg-perk {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-raj);
  font-size: 15px;
  color: var(--grey-light);
}
.prereg-perk-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(0,168,255,0.3);
  background: rgba(0,168,255,0.06);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.prereg-perk-icon svg { width: 12px; height: 12px; color: var(--blue); }

/* Form */
.prereg-form-wrap {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: 24px;
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
}
.prereg-form-wrap::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--red), var(--blue));
}
.prereg-form-title {
  font-family: var(--font-syn);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 32px;
  color: var(--white);
}



.form-submit {
  width: 100%;
  margin-top: 8px;
  padding: 18px;
  background: linear-gradient(135deg, var(--red) 0%, #cc0000 100%);
  color: var(--white);
  font-family: var(--font-syn);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.form-submit::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition);
}
.form-submit:hover::after { opacity: 1; }
.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(255,26,26,0.4), 0 0 60px rgba(255,26,26,0.2);
}
.form-submit:active { transform: translateY(0); }

/* Success state */
.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}
.form-success-icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(0,168,255,0.1);
  border: 2px solid var(--blue);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
}
.form-success-icon svg { width: 28px; height: 28px; color: var(--blue); }
.form-success-title {
  font-family: var(--font-syn);
  font-size: 14px;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  color: var(--blue);
}
.form-success-text {
  font-family: var(--font-raj);
  font-size: 15px;
  color: var(--grey-light);
  line-height: 1.6;
}

/* ===== INDEX MOBILE ===== */
@media (max-width: 1024px) {
  .eng-grid { grid-template-columns: 1fr 1fr; }
  .prereg-inner { grid-template-columns: 1fr; gap: 60px; }
}
@media (max-width: 768px) {
  .kart-wrapper { width: 90vw; top: 46%; }
  #drive-pin { 
    height: calc(100vh - var(--total-header-h)); 
    height: calc(100dvh - var(--total-header-h)); 
  }
  .phase-labels { display: none; }
  .drive-progress { width: 80vw; }
  .text-right, .text-left { right: 4vw; left: 4vw; top: auto; bottom: 26vh; transform: none; text-align: center; }
  #text-evre2 { max-width: 90%; margin: 0 auto; }
  .glass-panel { width: calc(100% - 40px); left: 20px; top: auto; bottom: 90px; transform: none; padding: 20px; }
  .eng-grid { grid-template-columns: 1fr; }
  #engineering { padding: 80px 0; }
  #pre-register { padding: 80px 0; }
  .prereg-form-wrap { padding: 32px 24px; }
  .scroll-hint { display: none; }
}