/* ===== 2sGamer — QQ Speed Inspired Racing Theme ===== */

:root {
  --bg-dark: #050510;
  --bg-card: rgba(10, 10, 30, 0.85);
  --cyan: #00f0ff;
  --cyan-dim: #00b8d4;
  --pink: #ff00aa;
  --pink-dim: #cc0088;
  --purple: #7b2fff;
  --yellow: #ffe600;
  --orange: #ff6b00;
  --text: #e8e8ff;
  --text-dim: #8888bb;
  --border: rgba(0, 240, 255, 0.2);
  --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.4), 0 0 60px rgba(0, 240, 255, 0.15);
  --glow-pink: 0 0 20px rgba(255, 0, 170, 0.4), 0 0 60px rgba(255, 0, 170, 0.15);
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Rajdhani', sans-serif;
  --radius: 12px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--cyan-dim) rgba(5, 5, 16, 0.9);
}

/* ===== Custom Scrollbar — Racing Neon Theme ===== */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 240, 255, 0.55) rgba(10, 10, 30, 0.6);
}

*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

*::-webkit-scrollbar-track {
  background: linear-gradient(
    180deg,
    rgba(5, 5, 16, 0.95) 0%,
    rgba(10, 10, 30, 0.85) 50%,
    rgba(5, 5, 16, 0.95) 100%
  );
  border-left: 1px solid rgba(0, 240, 255, 0.08);
}

*::-webkit-scrollbar-thumb {
  background: linear-gradient(
    180deg,
    var(--cyan) 0%,
    var(--purple) 50%,
    var(--pink) 100%
  );
  border-radius: 100px;
  border: 2px solid rgba(5, 5, 16, 0.9);
  box-shadow:
    0 0 8px rgba(0, 240, 255, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

*::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(
    180deg,
    #33f5ff 0%,
    #9b5fff 50%,
    #ff33bb 100%
  );
  box-shadow:
    0 0 14px rgba(0, 240, 255, 0.55),
    0 0 24px rgba(255, 0, 170, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

*::-webkit-scrollbar-thumb:active {
  background: linear-gradient(
    180deg,
    var(--cyan-dim) 0%,
    var(--purple) 100%
  );
}

*::-webkit-scrollbar-corner {
  background: var(--bg-dark);
}

body {
  font-family: var(--font-body);
  background: var(--bg-dark);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ===== Background Effects ===== */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}

.bg-glow--cyan {
  width: 600px;
  height: 600px;
  background: rgba(0, 240, 255, 0.08);
  top: -200px;
  right: -100px;
}

.bg-glow--pink {
  width: 500px;
  height: 500px;
  background: rgba(255, 0, 170, 0.06);
  bottom: -150px;
  left: -100px;
}

.speed-lines {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 200px,
    rgba(0, 240, 255, 0.02) 200px,
    rgba(0, 240, 255, 0.02) 201px
  );
  animation: speedMove 3s linear infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes speedMove {
  0% { transform: translateX(0); }
  100% { transform: translateX(-200px); }
}

/* ===== Navbar ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(5, 5, 16, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text);
}

.logo-icon {
  font-size: 1.8rem;
  animation: bounce 2s ease infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.4rem;
  letter-spacing: 2px;
}

.logo-accent {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.navbar__user {
  font-size: 0.9rem;
  color: var(--text-dim);
  padding: 0.4rem 0.8rem;
  background: rgba(0, 240, 255, 0.05);
  border-radius: 20px;
  border: 1px solid var(--border);
}

.nav-link {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-decoration: none;
  color: var(--text);
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--cyan);
  background: rgba(0, 240, 255, 0.08);
}

.nav-link--cta {
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #fff !important;
  box-shadow: var(--glow-cyan);
}

.nav-link--cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
}

.nav-link--outline {
  border: 1px solid var(--border);
}

/* ===== Main Content ===== */
.main-content {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 140px);
}

/* ===== Hero Section ===== */
.hero {
  text-align: center;
  padding: 5rem 2rem 3rem;
  max-width: 900px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 3px;
  padding: 0.4rem 1.2rem;
  background: linear-gradient(135deg, rgba(255, 0, 170, 0.2), rgba(123, 47, 255, 0.2));
  border: 1px solid rgba(255, 0, 170, 0.4);
  border-radius: 30px;
  color: var(--pink);
  margin-bottom: 2rem;
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 10px rgba(255, 0, 170, 0.2); }
  50% { box-shadow: 0 0 25px rgba(255, 0, 170, 0.5); }
}

.hero__title {
  font-family: var(--font-display);
  margin-bottom: 1.5rem;
}

.glitch {
  display: block;
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 900;
  letter-spacing: 4px;
  background: linear-gradient(135deg, var(--cyan), var(--pink), var(--yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  animation: glitchAnim 4s infinite;
}

@keyframes glitchAnim {
  0%, 90%, 100% { text-shadow: none; }
  92% { text-shadow: -3px 0 var(--cyan), 3px 0 var(--pink); }
  94% { text-shadow: 3px 0 var(--cyan), -3px 0 var(--pink); }
}

.hero__subtitle {
  display: block;
  font-size: clamp(1rem, 3vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 8px;
  color: var(--text-dim);
  margin-top: 0.5rem;
}

.hero__desc {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero__stats {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.stat-card {
  padding: 1.2rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
  transform: translateY(-4px);
}

.stat-card__num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.stat-card__label {
  font-size: 0.75rem;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-top: 0.2rem;
}

/* ===== Features ===== */
.features {
  padding: 3rem 2rem 5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  text-align: center;
  letter-spacing: 3px;
  margin-bottom: 2.5rem;
}

.text-accent {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.text-cyan {
  color: var(--cyan);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  transition: var(--transition);
  text-align: center;
}

.feature-card:hover {
  border-color: var(--pink);
  box-shadow: var(--glow-pink);
  transform: translateY(-6px);
}

.feature-card__icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
  color: var(--cyan);
}

.feature-card p {
  color: var(--text-dim);
  font-size: 0.95rem;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-decoration: none;
  padding: 0.85rem 2rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #fff;
  box-shadow: var(--glow-cyan);
}

.btn--primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.6);
}

.btn--pink {
  background: linear-gradient(135deg, var(--pink), var(--orange));
  color: #fff;
  box-shadow: var(--glow-pink);
}

.btn--pink:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 0 40px rgba(255, 0, 170, 0.6);
}

.btn--outline {
  background: transparent;
  color: var(--cyan);
  border: 2px solid var(--cyan);
}

.btn--outline:hover {
  background: rgba(0, 240, 255, 0.1);
  box-shadow: var(--glow-cyan);
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: 0.85rem;
}

.btn--full {
  width: 100%;
}

.btn__icon {
  font-size: 1.1rem;
}

/* ===== Auth Section ===== */
.auth-section {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 3rem 1.5rem;
  min-height: calc(100vh - 200px);
}

.auth-card {
  width: 100%;
  max-width: 460px;
  padding: 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.auth-card__header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-card__icon {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.auth-card__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: 3px;
  margin-bottom: 0.3rem;
}

.auth-card__sub {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.auth-card__footer {
  text-align: center;
  margin-top: 1.5rem;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.link-accent {
  color: var(--cyan);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.link-accent:hover {
  text-shadow: var(--glow-cyan);
}

/* ===== Forms ===== */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--text-dim);
  text-transform: uppercase;
}

.optional {
  font-size: 0.65rem;
  color: var(--text-dim);
  text-transform: none;
  letter-spacing: 0;
}

.form-group input {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.85rem 1rem;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: var(--transition);
  outline: none;
}

.form-group input::placeholder {
  color: rgba(136, 136, 187, 0.5);
}

.form-group input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
}

.recaptcha-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  margin: 0.5rem 0;
}

.recaptcha-group .g-recaptcha {
  transform-origin: center center;
}

@media (max-width: 400px) {
  .recaptcha-group .g-recaptcha {
    transform: scale(0.9);
  }
}

/* ===== Alerts ===== */
.alert {
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  text-align: center;
}

.alert--error {
  background: rgba(255, 50, 50, 0.15);
  border: 1px solid rgba(255, 50, 50, 0.4);
  color: #ff6b6b;
}

.alert--success {
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.3);
  color: var(--cyan);
}

/* ===== Download Section ===== */
.download-section {
  padding: 3rem 2rem 5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.download-header {
  text-align: center;
  margin-bottom: 3rem;
}

.download-header__badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 3px;
  padding: 0.4rem 1.2rem;
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid var(--border);
  border-radius: 30px;
  color: var(--cyan);
  margin-bottom: 1.5rem;
}

.download-header__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  letter-spacing: 3px;
  margin-bottom: 0.8rem;
}

.download-header__sub {
  color: var(--text-dim);
  font-size: 1.05rem;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.download-card {
  position: relative;
  padding: 2.5rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  backdrop-filter: blur(20px);
  transition: var(--transition);
  overflow: hidden;
}

.download-card:hover {
  transform: translateY(-8px);
}

.download-card--vn:hover {
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

.download-card--beta:hover {
  border-color: var(--pink);
  box-shadow: var(--glow-pink);
}

.download-card__glow {
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.download-card--vn .download-card__glow {
  background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 60%);
}

.download-card--beta .download-card__glow {
  background: radial-gradient(circle, rgba(255, 0, 170, 0.08) 0%, transparent 60%);
}

.download-card:hover .download-card__glow {
  opacity: 1;
}

.download-card__flag {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.download-card__beta-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 0.3rem 0.8rem;
  background: linear-gradient(135deg, var(--pink), var(--orange));
  border-radius: 20px;
  color: #fff;
  animation: pulse 2s ease infinite;
}

.download-card__title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 2px;
  margin-bottom: 0.8rem;
}

.download-card--vn .download-card__title {
  color: var(--cyan);
}

.download-card--beta .download-card__title {
  color: var(--pink);
}

.download-card__desc {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin-bottom: 1.2rem;
  line-height: 1.7;
}

.download-card__features {
  list-style: none;
  margin-bottom: 1.5rem;
}

.download-card__features li {
  padding: 0.3rem 0;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.download-card__version {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 1px;
}

.download-info {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.download-info h3 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 2px;
  margin-bottom: 1.2rem;
  color: var(--cyan);
}

.download-info__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.info-item {
  padding: 0.8rem 1rem;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  font-size: 0.9rem;
}

.info-item span {
  display: block;
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 0.2rem;
}

/* ===== Footer ===== */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.85rem;
}

.footer strong {
  color: var(--cyan);
}

.footer__badges {
  display: flex;
  gap: 0.8rem;
  justify-content: center;
  margin-top: 0.8rem;
}

.badge {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 2px;
  padding: 0.25rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--cyan);
}

.badge--pink {
  border-color: rgba(255, 0, 170, 0.3);
  color: var(--pink);
}

/* ===== Toast Notification ===== */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  padding: 1rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--cyan);
  border-radius: var(--radius);
  box-shadow: var(--glow-cyan);
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 1px;
  color: var(--cyan);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .navbar {
    padding: 0.8rem 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .navbar__links {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .hero {
    padding: 3rem 1.5rem 2rem;
  }

  .auth-card {
    padding: 1.5rem;
  }

  .download-grid {
    grid-template-columns: 1fr;
  }
}