:root {
  --bg: #060b12;
  --panel: rgba(255, 255, 255, 0.08);
  --text: #f7f8fb;
  --muted: rgba(255,255,255,0.75);
  --border: rgba(255,255,255,0.18);
  --shadow: 0 24px 60px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: #000;
  color: var(--text);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img, video {
  display: block;
  max-width: 100%;
}

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  background: linear-gradient(to bottom, rgba(0,0,0,0.38), rgba(0,0,0,0));
}

.nav {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 18px;
  min-height: 72px;
  padding: 12px 28px 0;
}

.nav a {
  color: rgba(255,255,255,0.92);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
  transition: opacity 0.2s ease;
}

.nav a:hover {
  opacity: 0.8;
}

.login-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 999px;
  padding: 0.75rem 1.1rem;
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(8px);
}

.carousel-screen {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: #000;
}

.carousel {
  position: absolute;
  inset: 0;
}

.slide {
  position: absolute;
  inset: 0;
  display: none;
}

.slide.active {
  display: block;
}

.slide img,
.slide video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.15) contrast(1.05);
}

.slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.58), rgba(0,0,0,0.12) 45%, rgba(0,0,0,0.3));
}

.slide-caption {
  position: absolute;
  left: clamp(24px, 5vw, 72px);
  bottom: clamp(84px, 10vh, 120px);
  z-index: 2;
  max-width: min(560px, 70vw);
}

.slide-caption span {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  margin-bottom: 10px;
}

.slide-caption strong {
  display: block;
  font-size: clamp(2.8rem, 6vw, 6rem);
  line-height: 0.93;
  letter-spacing: -0.06em;
  margin: 0;
}

.carousel-controls {
  position: absolute;
  right: clamp(20px, 4vw, 56px);
  bottom: clamp(22px, 4vh, 34px);
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 12px;
}

.carousel-buttons {
  display: flex;
  align-items: center;
  gap: 10px;
}

.arrow {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.35);
  background: rgba(0,0,0,0.18);
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  backdrop-filter: blur(8px);
}

.carousel-dots {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dot {
  width: 10px;
  height: 10px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,0.42);
  cursor: pointer;
  padding: 0;
}

.dot.active {
  background: #fff;
  box-shadow: 0 0 0 4px rgba(255,255,255,0.15);
}

.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
  background: linear-gradient(180deg, #060b12, #121d2a);
}

.auth-card {
  width: min(460px, 100%);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.auth-card h1 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.06em;
}

.auth-card p {
  color: var(--muted);
  margin: 0 0 22px;
}

.form-group {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.form-group label {
  color: var(--muted);
  font-size: 0.94rem;
}

.form-group input {
  width: 100%;
  padding: 0.9rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(11,16,32,0.7);
  color: var(--text);
  font-size: 1rem;
}

.form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
}

.secondary-text {
  color: var(--muted);
  font-size: 0.9rem;
}

.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  padding: 0.85rem 1.2rem;
  background: rgba(255,255,255,0.08);
  font-weight: 700;
}

.four-oh-four {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
  background: linear-gradient(180deg, #060b12, #121d2a);
}

.error-card {
  width: min(640px, 100%);
  text-align: center;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 28px;
  box-shadow: var(--shadow);
}

.error-code {
  font-size: clamp(4rem, 14vw, 9rem);
  letter-spacing: -0.08em;
  margin: 0;
  line-height: 1;
  color: rgba(255,255,255,0.95);
}

.error-card h1 {
  margin: 10px 0 8px;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.05em;
}

.error-card p {
  margin: 0 0 22px;
  color: var(--muted);
}

@media (max-width: 640px) {
  .nav {
    padding: 12px 18px 0;
    gap: 12px;
  }

  .nav a {
    letter-spacing: 0.08em;
    font-size: 0.7rem;
  }

  .slide-caption {
    max-width: 72vw;
    bottom: 88px;
  }

  .carousel-controls {
    right: 20px;
    bottom: 24px;
  }
}