:root {
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out-expo: cubic-bezier(0.87, 0, 0.13, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 0.2s;
  --duration-base: 0.3s;
  --duration-slow: 0.45s;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background: #0f172a;
  background-image: url('/wallpaper/wallpaper.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

.glass {
  background: rgba(30, 30, 47, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  transition: transform var(--duration-base) var(--ease-out-expo),
              box-shadow var(--duration-base) var(--ease-out-expo);
  will-change: transform, box-shadow;
  backface-visibility: hidden;
}

.glass:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.navbar-container {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%) translateZ(0);
  width: 94%;
  max-width: 1400px;
  z-index: 9999;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  animation: navFade 0.8s var(--ease-out-expo) forwards;
  backface-visibility: hidden;
}

@keyframes navFade {
  from {
    opacity: 0;
    transform: translate(-50%, -20px) translateZ(0);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0) translateZ(0);
  }
}

.navbar-brand {
  color: #c7d2fe;
  font-size: 19px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--duration-fast) ease;
  user-select: none;
  -webkit-user-select: none;
}

.navbar-brand:hover {
  color: #a5b4fc;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
  white-space: nowrap;
  margin-left: 12px;
}

.nav-item {
  position: relative;
  list-style: none;
  flex-shrink: 0;
}

.nav-link {
  color: #e2e8f0;
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 8px;
  transition: background var(--duration-base) var(--ease-out-expo),
              color var(--duration-base) var(--ease-out-expo);
  display: inline-block;
  position: relative;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 10px;
  right: 10px;
  height: 2px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  border-radius: 1px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-base) var(--ease-out-expo);
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #c7d2fe;
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-link:active {
  transform: scale(0.97);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 8px;
  background: rgba(30, 30, 47, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 8px 0;
  min-width: 160px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--duration-base) var(--ease-out-expo),
              visibility 0s var(--duration-base),
              transform var(--duration-base) var(--ease-out-expo);
  z-index: 9999;
  overflow-y: auto;
  max-height: 280px;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  backface-visibility: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) rgba(255, 255, 255, 0.05);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity var(--duration-base) var(--ease-out-expo),
              visibility 0s 0s,
              transform var(--duration-base) var(--ease-out-expo);
}

.dropdown-item {
  list-style: none;
}

.dropdown-link {
  color: #e2e8f0;
  text-decoration: none;
  font-size: 14px;
  padding: 9px 16px;
  display: block;
  transition: background var(--duration-fast) ease,
              color var(--duration-fast) ease;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
}

.dropdown-link:hover {
  background: rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
}

.dropdown-link:active {
  transform: scale(0.98);
  background: rgba(99, 102, 241, 0.3);
}

.login-btn {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff !important;
  padding: 6px 12px;
  border-radius: 8px;
  transition: transform var(--duration-fast) var(--ease-out-expo),
              background var(--duration-base) var(--ease-out-expo);
  margin-left: 4px;
  border: none;
  outline: none !important;
  transform: scale(1);
  will-change: transform;
  backface-visibility: hidden;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
  -webkit-touch-callout: none;
}

.login-btn:hover {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
}

.login-btn:active {
  transform: scale(0.95);
}

.login-btn:focus-visible {
  outline: 2px solid #a5b4fc !important;
  outline-offset: 2px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  transition: background var(--duration-fast) ease;
  border: none;
  outline: none !important;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.hamburger:hover {
  background: rgba(255, 255, 255, 0.1);
}

.hamburger:active {
  transform: scale(0.92);
}

.hamburger:focus-visible {
  outline: 2px solid #a5b4fc !important;
  outline-offset: 2px;
}

.hamburger-line {
  width: 22px;
  height: 2px;
  background: #e2e8f0;
  border-radius: 1px;
  transition: all var(--duration-base) var(--ease-out-expo);
}

.mobile-menu {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-120%) translateZ(0);
  width: 85%;
  max-width: 900px;
  height: auto;
  max-height: 75vh;
  background: rgba(30, 30, 47, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  z-index: 9998;
  transition: transform var(--duration-slow) var(--ease-in-out-expo),
              opacity var(--duration-slow) var(--ease-in-out-expo);
  padding: 20px;
  overflow-y: auto;
  visibility: hidden;
  opacity: 0;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  backface-visibility: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) rgba(255, 255, 255, 0.05);
}

.mobile-menu.active {
  visibility: visible;
  opacity: 1;
  transform: translateX(-50%) translateY(0) translateZ(0);
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mobile-nav-item {
  list-style: none;
  opacity: 0;
  transform: translateY(12px);
  animation: mobileItemIn 0.5s var(--ease-out-back) forwards;
}

.mobile-menu.active .mobile-nav-item:nth-child(1) { animation-delay: 0.04s; }
.mobile-menu.active .mobile-nav-item:nth-child(2) { animation-delay: 0.08s; }
.mobile-menu.active .mobile-nav-item:nth-child(3) { animation-delay: 0.12s; }
.mobile-menu.active .mobile-nav-item:nth-child(4) { animation-delay: 0.16s; }
.mobile-menu.active .mobile-nav-item:nth-child(5) { animation-delay: 0.2s; }
.mobile-menu.active .mobile-nav-item:nth-child(6) { animation-delay: 0.24s; }
.mobile-menu.active .mobile-nav-item:nth-child(7) { animation-delay: 0.28s; }
.mobile-menu.active .mobile-nav-item:nth-child(8) { animation-delay: 0.32s; }

@keyframes mobileItemIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-nav-link {
  color: #e2e8f0;
  text-decoration: none;
  font-size: 17px;
  font-weight: 500;
  padding: 11px 16px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--duration-base) var(--ease-out-expo),
              color var(--duration-base) var(--ease-out-expo);
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
  -webkit-touch-callout: none;
}

.mobile-nav-link:hover {
  background: rgba(99, 102, 241, 0.2);
  color: #c7d2fe;
}

.mobile-nav-link:active {
  transform: scale(0.97);
  background: rgba(99, 102, 241, 0.25);
}

.mobile-dropdown {
  margin-top: 8px;
  margin-left: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 0;
  opacity: 0;
  visibility: hidden;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-out-expo),
              opacity 0.4s var(--ease-out-expo),
              visibility 0s 0.4s;
}

.mobile-dropdown.active {
  max-height: 500px;
  opacity: 1;
  visibility: visible;
  transition: max-height 0.4s var(--ease-out-expo),
              opacity 0.4s var(--ease-out-expo),
              visibility 0s 0s;
}

.mobile-dropdown-link {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 16px;
  padding: 10px 16px;
  border-radius: 8px;
  display: block;
  transition: background var(--duration-fast) ease,
              color var(--duration-fast) ease;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
}

.mobile-dropdown-link:hover {
  background: rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
}

.mobile-dropdown-link:active {
  transform: scale(0.97);
  background: rgba(99, 102, 241, 0.3);
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 9997;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease-out-expo),
              visibility 0s 0.35s;
  will-change: opacity;
}

.overlay.active {
  opacity: 1;
  visibility: visible;
  transition: opacity 0.35s var(--ease-out-expo),
              visibility 0s 0s;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-slow) var(--ease-in-out-expo),
              visibility 0s var(--duration-slow);
  will-change: opacity;
}

.modal.active {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--duration-slow) var(--ease-in-out-expo),
              visibility 0s 0s;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.modal-content {
  position: relative;
  width: 90%;
  max-width: 500px;
  background: rgba(30, 30, 47, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  padding: 28px 24px;
  transform: scale(0.92) translateY(20px);
  transition: transform var(--duration-slow) var(--ease-out-back);
  will-change: transform;
  backface-visibility: hidden;
}

.modal.active .modal-content {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
  color: #e2e8f0;
}

.modal-close {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
  font-size: 18px;
  cursor: pointer;
  transition: background var(--duration-base) var(--ease-out-expo),
              color var(--duration-base) var(--ease-out-expo),
              transform var(--duration-fast) var(--ease-out-expo);
  border: none;
  outline: none !important;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.modal-close:active {
  transform: scale(0.88);
}

.modal-close:focus-visible {
  outline: 2px solid #a5b4fc !important;
  outline-offset: 2px;
}

.modal-body {
  color: #cbd5e1;
  line-height: 1.7;
  font-size: 15px;
}

.modal-footer {
  margin-top: 24px;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.modal-btn {
  padding: 9px 18px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out-expo),
              background var(--duration-base) var(--ease-out-expo);
  border: none;
  outline: none !important;
  transform: scale(1);
  will-change: transform;
  backface-visibility: hidden;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
  -webkit-touch-callout: none;
}

.modal-btn.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
}

.modal-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.modal-btn.secondary:active {
  transform: scale(0.95);
}

.modal-btn.secondary:focus-visible {
  outline: 2px solid #a5b4fc !important;
  outline-offset: 2px;
}

.modal-btn.primary {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
}

.modal-btn.primary:hover {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
}

.modal-btn.primary:active {
  transform: scale(0.95);
}

.modal-btn.primary:focus-visible {
  outline: 2px solid #a5b4fc !important;
  outline-offset: 2px;
}

.btn,
.act-btn {
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  vertical-align: middle;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--duration-fast) var(--ease-out-expo),
              filter var(--duration-fast) var(--ease-out-expo);
  will-change: transform;
  backface-visibility: hidden;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
  -webkit-touch-callout: none;
}

.btn:active,
.act-btn:active {
  transform: scale(0.94);
}

.btn:focus-visible,
.act-btn:focus-visible {
  outline: 2px solid #a5b4fc !important;
  outline-offset: 2px;
}

input[type="checkbox"] {
  vertical-align: middle;
  accent-color: #6366f1;
  cursor: pointer;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

* {
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) rgba(255, 255, 255, 0.05);
}

@media (max-width: 1200px) {
  .navbar-menu {
    display: none;
  }
  .hamburger {
    display: flex;
  }
}

@media (min-width: 1201px) {
  .hamburger,
  .mobile-menu,
  .overlay {
    display: none !important;
  }
}

@media (max-width: 768px) {
  .navbar-container {
    padding: 8px 14px;
    top: 12px;
    width: 94%;
  }
}

@media (max-width: 480px) {
  .navbar-container {
    top: 10px;
    width: 96%;
  }
}

@media (min-width: 1920px) {
  .navbar-container {
    max-width: 1400px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}