@import url('https://fonts.googleapis.com/css2?family=Bungee&family=Orbitron:wght@400;700;900&family=Space+Mono:wght@400;700&display=swap');

:root {
  --bg-color: #0a0a1f;
  --bg-gradient: radial-gradient(ellipse at top, #1a0a2e 0%, #0a0a1f 50%, #050510 100%);
  --surface-color: #16213e;
  --surface-glow: rgba(0, 255, 255, 0.05);

  --primary-color: #00ffff;
  --primary-glow: rgba(0, 255, 255, 0.5);
  --secondary-color: #ff00ff;
  --secondary-glow: rgba(255, 0, 255, 0.5);
  --accent-color: #ffff00;
  --accent-glow: rgba(255, 255, 0, 0.5);

  --success-color: #00ff88;
  --danger-color: #ff0055;
  --text-color: #e0e0ff;
  --text-glow: #ffffff;

  font-family: 'Space Mono', 'Courier New', monospace;

  /* 新增3D和动画变量 */
  --card-perspective: 1000px;
  --transition-smooth: cubic-bezier(0.4, 0.0, 0.2, 1);
  --transition-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
  overscroll-behavior-y: none;
}

body {
  margin: 0;
  background: var(--bg-color);
  background: var(--bg-gradient);
  color: var(--text-color);
  display: flex;
  justify-content: center;
  min-height: 100vh;
  overscroll-behavior-y: none;
  position: relative;
}

/* 静态网格背景层 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(0, 255, 255, 0.02) 0px, transparent 1px, transparent 2px, rgba(0, 255, 255, 0.02) 3px),
    repeating-linear-gradient(90deg, rgba(255, 0, 255, 0.02) 0px, transparent 1px, transparent 2px, rgba(255, 0, 255, 0.02) 3px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 1;
  /* 移除网格漂移动画 - 避免视觉疲劳 */
}

/* 移除扫描线动画 - 避免与棋盘网格产生视觉干扰 */
body::after {
  content: none;
}

.app {
  min-height: 100vh;
  min-height: 100dvh;
  width: min(960px, 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(1.25rem, 3vh, 1.75rem);
  padding: clamp(1.5rem, 5vh, 2.5rem) 1.5rem clamp(2.25rem, 6vh, 3.5rem);
  position: relative;
  z-index: 3;
}

.app__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

.app__header h1 {
  margin: 0;
  font-family: 'Bungee', cursive;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.15em;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-transform: uppercase;
  position: relative;
  text-shadow: none;
  animation: gradient-shift 8s ease infinite, title-glow 3s ease-in-out infinite alternate;
}

/* 仅在桌面端启用渐变动画 */
@media (min-width: 768px) and (hover: hover) {
  @keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
  }

  @keyframes title-glow {
    from { filter: drop-shadow(0 0 8px var(--primary-glow)) drop-shadow(0 0 16px var(--primary-glow)); }
    to { filter: drop-shadow(0 0 16px var(--secondary-glow)) drop-shadow(0 0 32px var(--secondary-glow)); }
  }
}

/* 移动端简化版本 */
@media (max-width: 767px) {
  .app__header h1 {
    animation: none;
    filter: drop-shadow(0 0 12px var(--primary-glow));
  }
}

.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.button {
  background: var(--surface-color);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  border-radius: 0;
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: all 0.3s var(--transition-smooth);
  touch-action: manipulation;
  position: relative;
  overflow: hidden;
  box-shadow:
    0 0 20px rgba(0, 255, 255, 0.2),
    inset 0 0 10px rgba(0, 255, 255, 0.05);
}

/* 按钮闪光效果 - 仅桌面端 */
@media (min-width: 768px) and (hover: hover) {
  .button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 255, 255, 0.3) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
  }

  .button:hover::before {
    width: 300px;
    height: 300px;
  }
}

/* 移动端简化版本 */
@media (max-width: 767px) {
  .button::before {
    content: none;
  }
}

.button.button--secondary {
  color: var(--secondary-color);
  border-color: var(--secondary-color);
  box-shadow:
    0 0 20px rgba(255, 0, 255, 0.2),
    inset 0 0 10px rgba(255, 0, 255, 0.05);
}

@media (min-width: 768px) and (hover: hover) {
  .button.button--secondary::before {
    background: radial-gradient(circle, rgba(255, 0, 255, 0.3) 0%, transparent 70%);
  }
}

/* 只在非触摸设备上启用 hover 效果 */
@media (hover: hover) and (pointer: fine) {
  .button:hover {
    transform: translateY(-3px) scale(1.02);
    background: rgba(0, 255, 255, 0.15);
    box-shadow:
      0 0 30px rgba(0, 255, 255, 0.4),
      0 4px 15px rgba(0, 0, 0, 0.3),
      inset 0 0 20px rgba(0, 255, 255, 0.1);
    border-color: rgba(0, 255, 255, 0.8);
  }

  .button.button--secondary:hover {
    background: rgba(255, 0, 255, 0.15);
    box-shadow:
      0 0 30px rgba(255, 0, 255, 0.4),
      0 4px 15px rgba(0, 0, 0, 0.3),
      inset 0 0 20px rgba(255, 0, 255, 0.1);
    border-color: rgba(255, 0, 255, 0.8);
  }
}

.button:active {
  transform: translateY(0px) scale(0.98);
  transition: all 0.1s ease;
}

.button:disabled,
.button:disabled:hover {
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 6px 16px rgba(27, 31, 59, 0.1);
  filter: none;
  opacity: 0.6;
}

.stats {
  display: flex;
  gap: 1.5rem;
  font-size: 1.1rem;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  flex-wrap: wrap;
  justify-content: center;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stats span {
  padding: 0.5rem 1rem;
  background: rgba(0, 255, 255, 0.05);
  border: 1px solid rgba(0, 255, 255, 0.3);
  /* 移除 box-shadow 简化样式 */
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

.time-penalty {
  animation: penalty-flash 0.6s ease;
}

@keyframes penalty-flash {
  0%, 100% {
    color: inherit;
    transform: scale(1);
  }
  25%, 75% {
    color: #ef476f;
    transform: scale(1.1);
  }
  50% {
    color: #ff6b9d;
    transform: scale(1.15);
  }
}

.board-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
}

.board {
  display: grid;
  grid-template-columns: repeat(var(--board-cols, 8), minmax(28px, 1fr));
  gap: clamp(0.3rem, 0.9vw, 0.5rem);
  width: min(720px, 95vw, max(200px, calc(100vh - 14rem)));
  padding: clamp(0.75rem, 2vw, 1rem);
  border-radius: 0;
  background: var(--surface-color);
  background-image:
    linear-gradient(rgba(0, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 20px 20px;
  border: 2px solid rgba(0, 255, 255, 0.3);
  touch-action: manipulation;
  position: relative;
  perspective: var(--card-perspective);
  box-shadow:
    0 0 40px rgba(0, 255, 255, 0.2),
    0 8px 32px rgba(0, 0, 0, 0.4),
    inset 0 0 60px rgba(0, 255, 255, 0.05);
}

/* 移除棋盘hover流光效果 - 避免视觉干扰 */
.board::before {
  content: none;
}

.card {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 0;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  border: none;
  padding: 0;
  appearance: none;
  -webkit-appearance: none;
  transform-style: preserve-3d;
  transition: transform 0.6s var(--transition-smooth);
  will-change: transform;
}

/* 卡片内部容器 */
.card__inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.6s var(--transition-smooth);
}

/* 卡片正面（背面遮挡时的样式）*/
.card__face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  background: rgba(10, 10, 31, 0.9);
  box-shadow:
    inset 0 0 20px rgba(0, 255, 255, 0.15),
    inset 0 0 0 2px rgba(0, 255, 255, 0.4),
    0 4px 15px rgba(0, 0, 0, 0.3);
  clip-path: polygon(8% 0%, 92% 0%, 100% 8%, 100% 92%, 92% 100%, 8% 100%, 0% 92%, 0% 8%);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 卡片背面 */
.card__face--back {
  transform: rotateY(180deg);
  background: linear-gradient(135deg, rgba(0, 255, 255, 0.1), rgba(255, 0, 255, 0.1));
}

/* 卡片背面的图案 */
.card__face--back::before {
  content: '?';
  font-size: clamp(2rem, 6vw, 3rem);
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  color: var(--primary-color);
  text-shadow: 0 0 10px var(--primary-glow), 0 0 20px var(--primary-glow);
  opacity: 0.3;
}

/* 翻转状态 - 初始所有卡片都是翻转的（显示背面）*/
.card--flipped .card__inner {
  transform: rotateY(180deg);
}

/* 卡片边框发光效果 - 仅桌面端 */
@media (min-width: 768px) and (hover: hover) {
  .card__face::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
      45deg,
      transparent,
      rgba(0, 255, 255, 0.3),
      transparent
    );
    opacity: 0;
    transition: opacity 0.3s ease;
    clip-path: inherit;
  }
}

/* 移动端移除装饰效果 */
@media (max-width: 767px) {
  .card__face::after {
    content: none;
  }
}

.card__emoji {
  font-size: clamp(1.8rem, 5.8vw, 2.8rem);
  line-height: 1;
  transition: transform 0.3s var(--transition-bounce);
  pointer-events: none;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
  z-index: 1;
}

@supports (-webkit-touch-callout: none) {
  .card__emoji {
    transform: translateY(-2%);
  }
}

@supports not (aspect-ratio: 1 / 1) {
  .card {
    padding-top: 100%;
  }
}

/* 卡片 hover 效果仅在非触摸设备上启用 */
@media (hover: hover) and (pointer: fine) {
  .card:hover {
    transform: translateY(-5px) scale(1.05);
  }

  .card:hover .card__face::after {
    opacity: 1;
  }

  .card:hover .card__emoji {
    transform: scale(1.1);
  }
}

.card:focus-visible {
  outline: 3px solid var(--primary-color);
  outline-offset: 3px;
  filter: drop-shadow(0 0 10px var(--primary-glow));
}

.card--selected .card__face {
  background: rgba(0, 255, 255, 0.25);
  box-shadow:
    inset 0 0 30px rgba(0, 255, 255, 0.3),
    inset 0 0 0 3px var(--primary-color),
    0 0 30px var(--primary-glow),
    0 4px 20px rgba(0, 0, 0, 0.4);
  animation: selected-pulse 1s ease-in-out infinite;
}

.card--selected .card__emoji {
  transform: scale(1.15);
  animation: emoji-bounce 0.6s var(--transition-bounce);
}

@keyframes selected-pulse {
  0%, 100% {
    box-shadow:
      inset 0 0 30px rgba(0, 255, 255, 0.3),
      inset 0 0 0 3px var(--primary-color),
      0 0 30px var(--primary-glow),
      0 4px 20px rgba(0, 0, 0, 0.4);
  }
  50% {
    box-shadow:
      inset 0 0 40px rgba(0, 255, 255, 0.5),
      inset 0 0 0 3px var(--primary-color),
      0 0 40px var(--primary-glow),
      0 4px 20px rgba(0, 0, 0, 0.4);
  }
}

@keyframes emoji-bounce {
  0% { transform: scale(1); }
  50% { transform: scale(1.2); }
  100% { transform: scale(1.15); }
}

.card--hint .card__face {
  background: rgba(255, 255, 0, 0.2);
  box-shadow:
    inset 0 0 30px rgba(255, 255, 0, 0.3),
    inset 0 0 0 3px var(--accent-color),
    0 0 30px var(--accent-glow),
    0 4px 20px rgba(0, 0, 0, 0.4);
  animation: hint-pulse 1.5s ease-in-out infinite;
}

.card--hint .card__emoji {
  animation: hint-wiggle 0.5s ease-in-out infinite;
}

@keyframes hint-pulse {
  0%, 100% {
    box-shadow:
      inset 0 0 30px rgba(255, 255, 0, 0.3),
      inset 0 0 0 3px var(--accent-color),
      0 0 30px var(--accent-glow),
      0 4px 20px rgba(0, 0, 0, 0.4);
  }
  50% {
    box-shadow:
      inset 0 0 40px rgba(255, 255, 0, 0.5),
      inset 0 0 0 3px var(--accent-color),
      0 0 50px var(--accent-glow),
      0 4px 20px rgba(0, 0, 0, 0.4);
  }
}

@keyframes hint-wiggle {
  0%, 100% { transform: rotate(0deg) scale(1); }
  25% { transform: rotate(-5deg) scale(1.05); }
  75% { transform: rotate(5deg) scale(1.05); }
}

.card--friendly .card__inner {
  animation: match-flip 0.6s var(--transition-smooth);
}

.card--friendly .card__face {
  background: rgba(0, 255, 136, 0.3);
  box-shadow:
    inset 0 0 40px rgba(0, 255, 136, 0.5),
    inset 0 0 0 3px var(--success-color),
    0 0 40px rgba(0, 255, 136, 0.6),
    0 4px 20px rgba(0, 0, 0, 0.4);
}

.card--friendly .card__emoji {
  animation: match-celebrate 0.6s var(--transition-bounce);
}

@keyframes match-flip {
  0% { transform: rotateY(0deg) scale(1); }
  50% { transform: rotateY(180deg) scale(1.15); }
  100% { transform: rotateY(360deg) scale(1); }
}

@keyframes match-celebrate {
  0%, 100% { transform: scale(1); }
  25% { transform: scale(1.3) rotate(-10deg); }
  75% { transform: scale(1.3) rotate(10deg); }
}

.card--cleared {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.5) rotateZ(180deg);
  transition: all 0.6s var(--transition-smooth);
}

.card--cleared .card__inner {
  transform: rotateY(180deg) scale(0);
}

.card--disabled {
  opacity: 0.3;
  cursor: not-allowed;
  filter: grayscale(0.8) blur(1px);
  pointer-events: none;
}

.feedback {
  min-height: 1.25rem;
  font-size: 1.05rem;
  font-family: 'Orbitron', sans-serif;
  color: var(--primary-color);
  text-shadow: 0 0 10px var(--primary-glow);
  letter-spacing: 0.05em;
}

/* PWA 安装提示样式 */
.pwa-prompt {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  max-width: 90vw;
  width: 400px;
  animation: slide-up 0.5s var(--transition-smooth);
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.pwa-prompt__content {
  background: var(--surface-color);
  background-image:
    linear-gradient(rgba(0, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 20px 20px;
  padding: 1.5rem;
  border: 2px solid rgba(0, 255, 255, 0.4);
  clip-path: polygon(15px 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%, 0 15px);
  box-shadow:
    0 0 40px var(--primary-glow),
    0 8px 32px rgba(0, 0, 0, 0.6),
    inset 0 0 40px rgba(0, 255, 255, 0.05);
  text-align: center;
}

.pwa-prompt__icon {
  font-size: 3rem;
  margin-bottom: 0.5rem;
  animation: icon-pulse 2s ease-in-out infinite;
}

@keyframes icon-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.pwa-prompt__title {
  margin: 0 0 0.5rem;
  font-family: 'Orbitron', sans-serif;
  font-size: 1.5rem;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.pwa-prompt__desc {
  margin: 0 0 1rem;
  font-size: 1rem;
  color: var(--text-color);
  opacity: 0.9;
}

.pwa-prompt__actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.pwa-prompt__actions .button {
  flex: 1;
  min-width: 120px;
  padding: 0.65rem 1.25rem;
  font-size: 0.95rem;
}

/* 网络状态提示 */
.network-status {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 0.75rem 1.25rem;
  background: var(--surface-color);
  border: 2px solid;
  border-radius: 0;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  z-index: 2000;
  animation: slide-in-right 0.5s var(--transition-smooth);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

@keyframes slide-in-right {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.network-status--online {
  color: var(--success-color);
  border-color: var(--success-color);
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.4);
}

.network-status--offline {
  color: var(--danger-color);
  border-color: var(--danger-color);
  box-shadow: 0 0 20px rgba(255, 0, 85, 0.4);
}


@media (max-width: 720px) {
  .app {
    width: 100%;
    padding: 2rem 1.25rem 2.75rem;
    gap: 1.5rem;
  }

  .controls {
    width: 100%;
    gap: 0.6rem;
  }

  .board {
    grid-template-columns: repeat(var(--board-cols, 8), minmax(28px, 1fr));
    width: min(680px, 95vw, max(200px, calc(100vh - 13rem)));
  }
}

@media (max-width: 520px) {
  .app {
    padding: 1.5rem 1rem 2.25rem;
  }

  .app__header h1 {
    font-size: clamp(1.75rem, 8vw, 2.4rem);
  }

  .controls {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    padding: 0.65rem 1rem;
    font-size: 0.95rem;
  }

  .stats {
    gap: 0.75rem;
    font-size: 1rem;
  }

  .board {
    grid-template-columns: repeat(var(--board-cols, 8), minmax(26px, 1fr));
    gap: clamp(0.25rem, 1.5vw, 0.4rem);
    padding: clamp(0.6rem, 2.5vw, 0.75rem);
    width: min(640px, 94vw, max(200px, calc(100vh - 12.5rem)));
  }
}

@media (max-width: 420px) {
  .board {
    grid-template-columns: repeat(var(--board-cols, 8), minmax(24px, 1fr));
    gap: 0.35rem;
  }

  .stats {
    font-size: 0.95rem;
  }
}

@media (max-height: 760px) {
  .button {
    padding: 0.65rem 1.25rem;
  }

  .stats {
    font-size: 1rem;
  }

  .board {
    width: min(620px, 92vw, max(200px, calc(100vh - 12rem)));
    grid-template-columns: repeat(var(--board-cols, 8), minmax(26px, 1fr));
  }
}

@media (max-height: 640px) {
  .app {
    padding: clamp(1rem, 4vh, 1.5rem) 1.25rem clamp(1.5rem, 5vh, 2rem);
  }

  .app__header h1 {
    font-size: clamp(1.6rem, 4vw, 2.2rem);
  }

  .board {
    width: min(540px, 90vw, max(180px, calc(100vh - 11rem)));
    grid-template-columns: repeat(var(--board-cols, 8), minmax(24px, 1fr));
    gap: clamp(0.2rem, 1vw, 0.35rem);
  }

  .card__emoji {
    font-size: clamp(1.5rem, 5.5vw, 2.3rem);
  }
}

/* 排行榜模态框样式 */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal.modal--open {
  display: flex;
  opacity: 1;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 31, 0.95);
  /* 移除 backdrop-filter 提升移动端性能 */
}

.modal__content {
  position: relative;
  background: var(--surface-color);
  background-image:
    linear-gradient(rgba(0, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 20px 20px;
  border-radius: 0;
  padding: 2rem;
  max-width: 90vw;
  width: 500px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow:
    0 0 40px var(--primary-glow),
    0 0 80px rgba(0, 0, 0, 0.8),
    inset 0 0 0 2px rgba(0, 255, 255, 0.3);
  animation: modal-slide-in 0.3s ease;
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

@keyframes modal-slide-in {
  from {
    transform: translateY(-20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  color: var(--text-color);
  opacity: 0.6;
  transition: opacity 0.2s ease;
  padding: 0.5rem;
}

@media (hover: hover) and (pointer: fine) {
  .modal__close:hover {
    opacity: 1;
  }
}

.modal__title {
  margin: 0 0 1.5rem;
  font-size: 2rem;
  font-family: 'Bungee', cursive;
  text-align: center;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-shadow: 0 0 20px var(--primary-glow), 0 0 40px var(--primary-glow);
}

.submit-form {
  background: rgba(0, 255, 255, 0.05);
  border: 1px solid rgba(0, 255, 255, 0.3);
  border-radius: 0;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.1), inset 0 0 20px rgba(0, 255, 255, 0.05);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

.submit-form__message {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  text-align: center;
  color: var(--success-color);
}

.submit-form__input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.submit-form__input-group label {
  font-weight: 600;
}

.submit-form__input-group input {
  padding: 0.75rem;
  border: 1px solid rgba(0, 255, 255, 0.3);
  border-radius: 0;
  font-size: 1rem;
  font-family: 'Space Mono', monospace;
  background: rgba(10, 10, 31, 0.6);
  color: var(--text-color);
  transition: all 0.3s ease;
  box-shadow: inset 0 0 10px rgba(0, 255, 255, 0.1);
}

.submit-form__input-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow:
    0 0 20px var(--primary-glow),
    inset 0 0 20px rgba(0, 255, 255, 0.2);
}

.leaderboard {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.leaderboard__loading {
  text-align: center;
  padding: 2rem;
  color: var(--text-color);
  opacity: 0.6;
}

.leaderboard__item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: rgba(0, 255, 255, 0.03);
  border: 1px solid rgba(0, 255, 255, 0.2);
  border-radius: 0;
  transition: all 0.3s ease;
  position: relative;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.leaderboard__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
  opacity: 0;
  transition: opacity 0.3s ease;
}

@media (hover: hover) and (pointer: fine) {
  .leaderboard__item:hover {
    transform: translateX(8px);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
    background: rgba(0, 255, 255, 0.08);
    border-color: var(--primary-color);
  }

  .leaderboard__item:hover::before {
    opacity: 1;
  }
}

.leaderboard__item--current {
  background: rgba(0, 255, 136, 0.1);
  border-color: var(--success-color);
  box-shadow: 0 0 30px rgba(0, 255, 136, 0.4);
}

.leaderboard__item--current::before {
  opacity: 1;
  background: var(--success-color);
}

.leaderboard__rank {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 255, 255, 0.2);
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
  border-radius: 0;
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 1.1rem;
  box-shadow: 0 0 10px var(--primary-glow), inset 0 0 10px rgba(0, 255, 255, 0.1);
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
}

.leaderboard__item:nth-child(1) .leaderboard__rank {
  background: rgba(255, 215, 0, 0.2);
  color: #ffd700;
  border-color: #ffd700;
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.6), inset 0 0 20px rgba(255, 215, 0, 0.2);
  animation: rank-glow 2s ease-in-out infinite;
}

.leaderboard__item:nth-child(2) .leaderboard__rank {
  background: rgba(192, 192, 192, 0.2);
  color: #c0c0c0;
  border-color: #c0c0c0;
  box-shadow: 0 0 15px rgba(192, 192, 192, 0.5), inset 0 0 15px rgba(192, 192, 192, 0.2);
}

.leaderboard__item:nth-child(3) .leaderboard__rank {
  background: rgba(205, 127, 50, 0.2);
  color: #e9a96d;
  border-color: #cd7f32;
  box-shadow: 0 0 15px rgba(205, 127, 50, 0.5), inset 0 0 15px rgba(205, 127, 50, 0.2);
}

@keyframes rank-glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.6), inset 0 0 20px rgba(255, 215, 0, 0.2);
  }
  50% {
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.8), inset 0 0 30px rgba(255, 215, 0, 0.3);
  }
}

.leaderboard__info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.leaderboard__name {
  font-weight: 600;
  font-size: 1.1rem;
}

.leaderboard__stats {
  font-size: 0.9rem;
  opacity: 0.7;
}

@media (max-width: 520px) {
  .modal__content {
    padding: 1.5rem;
    max-width: 95vw;
  }

  .modal__title {
    font-size: 1.5rem;
  }

  .leaderboard__item {
    padding: 0.75rem;
  }

  .leaderboard__rank {
    width: 2rem;
    height: 2rem;
    font-size: 1rem;
  }

  .leaderboard__name {
    font-size: 1rem;
  }
}