/* ═══ Harfim — Arena Giriş Ekranı (tam ekran, oyun odaklı) ═══ */

#student-selection-screen.nova-login-arena {
  --nl-neon: #00f0ff;
  --nl-mint: #00ffcc;
  --nl-blue: #66a6ff;
  --nl-violet: #a855f7;
  --nl-rose: #f472b6;
  --nl-ink: #e9f4ff;
  --nl-muted: #94a3b8;
  --nl-panel: rgba(8, 18, 40, 0.82);
  --nl-border: rgba(0, 200, 255, 0.38);
  --nl-glow: rgba(0, 240, 255, 0.22);
  --nl-err: #ff6b8a;

  position: fixed;
  inset: 0;
  z-index: 99990;
  display: none;
  flex-direction: column;
  align-items: stretch;
  justify-content: stretch;
  overflow: hidden;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  color: var(--nl-ink);
  background: radial-gradient(1200px 700px at 50% 120%, #061129 0%, #040a1a 42%, #020611 72%, #01030a 100%);
}

html:not(.nova-has-session) #student-selection-screen.nova-login-arena {
  display: flex !important;
  visibility: visible !important;
}

/* ── Arka plan katmanları ── */
.nova-login-arena__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.nova-login-arena__stars {
  position: absolute;
  inset: -20%;
  opacity: 0.75;
  background:
    radial-gradient(2px 2px at 18% 28%, #d1e6ff 50%, transparent 51%) repeat,
    radial-gradient(1px 1px at 62% 68%, #9bc2ff 50%, transparent 51%) repeat,
    radial-gradient(1px 1px at 82% 18%, #ffffff 50%, transparent 51%) repeat;
  background-size: 300px 300px, 250px 250px, 200px 200px;
  animation: novaLoginStarDrift 42s linear infinite;
}

.nova-login-arena__aurora {
  position: absolute;
  inset: -15%;
  background: conic-gradient(
    from 0deg at 50% -8%,
    rgba(0, 255, 255, 0.07),
    transparent 22%,
    rgba(168, 85, 247, 0.08) 42%,
    transparent 62%,
    rgba(0, 255, 200, 0.06) 82%,
    transparent
  );
  filter: blur(10px);
  animation: novaLoginAuroraSweep 14s linear infinite;
}

.nova-login-arena__grid {
  position: absolute;
  inset: 0;
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(0, 200, 255, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 200, 255, 0.15) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, #000 20%, transparent 75%);
}

.nova-login-arena__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.45;
  animation: novaLoginOrbFloat 8s ease-in-out infinite;
}

.nova-login-arena__orb--a {
  width: 280px;
  height: 280px;
  top: 8%;
  left: -4%;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.35), transparent 70%);
}

.nova-login-arena__orb--b {
  width: 320px;
  height: 320px;
  bottom: 6%;
  right: -6%;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.28), transparent 70%);
  animation-delay: -3s;
}

@keyframes novaLoginStarDrift {
  to { transform: translateY(-180px); }
}

@keyframes novaLoginAuroraSweep {
  to { transform: rotate(1turn); }
}

@keyframes novaLoginOrbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(12px, -16px) scale(1.06); }
}

/* ── Ana kabuk ── */
.nova-login-arena__shell {
  position: relative;
  z-index: 2;
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(20px, 4vw, 48px);
  align-items: center;
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
  padding:
    max(20px, env(safe-area-inset-top))
    clamp(16px, 4vw, 32px)
    max(20px, env(safe-area-inset-bottom));
}

@media (max-width: 900px) {
  .nova-login-arena__shell {
    grid-template-columns: 1fr;
    align-content: center;
    gap: clamp(16px, 3vw, 28px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

/* ── Marka vitrini ── */
.nova-login-arena__brand {
  display: flex;
  flex-direction: column;
  gap: clamp(14px, 2.5vw, 22px);
  padding: clamp(8px, 2vw, 16px) 0;
}

.nova-login-arena__brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--nl-mint);
  background: rgba(0, 255, 200, 0.08);
  border: 1px solid rgba(0, 255, 200, 0.28);
  box-shadow: 0 0 20px rgba(0, 255, 200, 0.12);
}

.nova-login-arena__logo-wrap {
  position: relative;
  width: fit-content;
}

.nova-login-arena__logo-glow {
  position: absolute;
  inset: -20% -10%;
  background: radial-gradient(ellipse at center, rgba(0, 240, 255, 0.35), transparent 65%);
  filter: blur(24px);
  pointer-events: none;
  animation: novaLoginLogoPulse 3.5s ease-in-out infinite;
}

@keyframes novaLoginLogoPulse {
  0%, 100% { opacity: 0.65; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.04); }
}

#student-selection-screen.nova-login-arena .nova-login-arena__title {
  position: relative;
  margin: 0;
  font-family: "Comfortaa", "Baloo 2", cursive, sans-serif;
  font-size: clamp(42px, 8vw, 76px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, #ffffff 0%, var(--nl-neon) 35%, var(--nl-mint) 65%, var(--nl-blue) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 28px rgba(0, 240, 255, 0.45));
}

.nova-login-arena__title-accent,
.nova-login-arena__title-x {
  background: linear-gradient(135deg, #ffe08a 0%, #ffb347 45%, #ff8f6b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nova-login-arena__tagline {
  margin: 0;
  max-width: 28em;
  font-size: clamp(15px, 2.2vw, 18px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--nl-muted);
}

.nova-login-arena__features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.nova-login-arena__feat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--nl-ink);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(0, 200, 255, 0.2);
  backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.nova-login-arena__feat-icon {
  font-size: 16px;
  line-height: 1;
}

.nova-login-arena__duel-art {
  margin-top: clamp(8px, 2vw, 16px);
  width: min(100%, 340px);
  opacity: 0.85;
}

.nova-login-arena__publisher {
  margin-top: auto;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(148, 163, 184, 0.65);
}

@media (max-width: 900px) {
  .nova-login-arena__brand {
    text-align: center;
    align-items: center;
  }
  .nova-login-arena__tagline { text-align: center; }
  .nova-login-arena__features { justify-content: center; }
  .nova-login-arena__duel-art { display: none; }
  .nova-login-arena__publisher { margin-top: 8px; }
}

/* ── Giriş paneli ── */
#student-selection-screen.nova-login-arena .nova-login-arena__panel.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(22px, 4vw, 32px);
  border-radius: 22px;
  background: var(--nl-panel);
  border: 1px solid var(--nl-border);
  box-shadow:
    0 24px 64px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.04) inset,
    0 0 40px var(--nl-glow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  overflow: hidden;
}

#student-selection-screen.nova-game-form-dropdown-open .nova-login-arena__panel.card {
  overflow: visible;
}

.nova-login-arena__panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--nl-neon), var(--nl-mint), transparent);
  opacity: 0.85;
}

.nova-login-arena__panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.nova-login-arena__panel-header h2 {
  margin: 0;
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.nova-login-arena__panel-header h2 span {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--nl-muted);
}

#student-selection-screen.nova-login-arena .register-link {
  flex-shrink: 0;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid rgba(0, 200, 255, 0.35);
  background: rgba(0, 200, 255, 0.08);
  color: var(--nl-neon);
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}

#student-selection-screen.nova-login-arena .register-link:hover {
  background: rgba(0, 200, 255, 0.16);
  border-color: rgba(0, 240, 255, 0.55);
  transform: translateY(-1px);
}

#student-selection-screen.nova-login-arena form {
  display: grid;
  gap: 14px;
}

#student-selection-screen.nova-login-arena .nova-login-field-label {
  display: block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #00f0ff;
  margin-bottom: 2px;
}

#student-selection-screen.nova-login-arena .field--class {
  gap: 10px;
}

#student-selection-screen.nova-login-arena .field {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 15px;
  border-radius: 14px;
  background: rgba(4, 12, 28, 0.72);
  border: 1.5px solid rgba(0, 160, 220, 0.22);
  transition: border-color 0.18s, box-shadow 0.18s, transform 0.12s;
}

#student-selection-screen.nova-login-arena .field:focus-within {
  border-color: rgba(0, 240, 255, 0.55);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.12), 0 8px 28px rgba(0, 200, 255, 0.15);
  transform: translateY(-1px);
}

#student-selection-screen.nova-login-arena .ico {
  flex-shrink: 0;
  font-size: 18px;
  opacity: 0.9;
}

#student-selection-screen.nova-login-arena .field input,
#student-selection-screen.nova-login-arena .field select {
  appearance: none;
  border: 0;
  outline: 0;
  background: transparent;
  width: 100%;
  color: var(--nl-ink);
  font: inherit;
  font-size: 16px;
  font-weight: 600;
}

#student-selection-screen.nova-login-arena .field select option {
  background: #0a1628;
  color: var(--nl-ink);
}

#student-selection-screen.nova-login-arena .field input::placeholder {
  color: rgba(148, 163, 184, 0.75);
  font-weight: 500;
}

#student-selection-screen.nova-login-arena .eye {
  flex-shrink: 0;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 10px;
  font-size: 16px;
  opacity: 0.75;
  transition: opacity 0.15s, background 0.15s;
}

#student-selection-screen.nova-login-arena .eye:hover {
  opacity: 1;
  background: rgba(0, 200, 255, 0.1);
}

#student-selection-screen.nova-login-arena .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 560px) {
  #student-selection-screen.nova-login-arena .row {
    grid-template-columns: 1fr;
  }
}

#student-selection-screen.nova-login-arena .actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

#student-selection-screen.nova-login-arena .muted {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--nl-muted);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

#student-selection-screen.nova-login-arena .muted input {
  accent-color: var(--nl-neon);
  width: 16px;
  height: 16px;
}

#student-selection-screen.nova-login-arena .link {
  background: none;
  border: 0;
  color: var(--nl-blue);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
}

#student-selection-screen.nova-login-arena .link:hover {
  color: var(--nl-neon);
  text-decoration: underline;
}

#student-selection-screen.nova-login-arena .cta {
  width: 100%;
  border: 0;
  border-radius: 12px;
  padding: 11px 14px;
  font-size: clamp(14px, 3.8vw, 16px);
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: none;
  color: #06253a;
  /* Ice CTA — neon flash olmasın (130 ile aynı) */
  background: linear-gradient(180deg, #b8e8ff 0%, #5eb0e8 48%, #3a8fc8 100%);
  box-shadow: 0 4px 0 #2a6f9a;
  cursor: not-allowed;
  opacity: 0.5;
  transition: opacity 0.15s ease, filter 0.15s ease;
}

#student-selection-screen.nova-login-arena .cta:not(:disabled),
#student-selection-screen.nova-login-arena .cta.active:not(:disabled) {
  cursor: pointer;
  opacity: 1;
}

#student-selection-screen.nova-login-arena .cta:not(:disabled):hover {
  filter: brightness(1.05);
}

#student-selection-screen.nova-login-arena .cta:not(:disabled):active {
  filter: brightness(0.98);
}

#student-selection-screen.nova-login-arena .cta:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#student-selection-screen.nova-login-arena .error {
  min-height: 22px;
  color: var(--nl-err);
  font-size: 13px;
  font-weight: 700;
}

#student-selection-screen.nova-login-arena .helper {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 11px 14px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.45;
  color: rgba(0, 255, 200, 0.85);
  background: rgba(0, 255, 200, 0.06);
  border: 1px solid rgba(0, 255, 200, 0.18);
}

#student-selection-screen.nova-login-arena .sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

body.nova-login-fast-visible {
  overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
  .nova-login-arena__stars,
  .nova-login-arena__aurora,
  .nova-login-arena__orb,
  .nova-login-arena__logo-glow {
    animation: none !important;
  }
  #student-selection-screen.nova-login-arena .field,
  #student-selection-screen.nova-login-arena .cta {
    transition: none !important;
  }
}