:root {
  --bg: #080a18;
  --bg-soft: #10132a;
  --card: rgba(20, 24, 52, 0.78);
  --card-border: rgba(255, 255, 255, 0.09);

  --text: #f7f7ff;
  --muted: #9498b8;

  --purple: #8b5cf6;
  --purple-light: #b794ff;
  --pink: #ec4899;
  --cyan: #38bdf8;
  --green: #34d399;
  --yellow: #facc15;
  --red: #fb7185;

  --radius: 24px;
  --shadow: 0 25px 70px rgba(0, 0, 0, 0.35);
}

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

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "DM Sans", sans-serif;
  overflow-x: hidden;
}

button {
  border: 0;
  font: inherit;
  cursor: pointer;
  color: inherit;
}

.background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
  background:
    radial-gradient(
      circle at 50% -20%,
      rgba(100, 70, 220, 0.16),
      transparent 45%
    ),
    linear-gradient(145deg, #080a18, #0d1025 55%, #080a18);
}

.orb {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.13;
}

.orb-1 {
  background: #8b5cf6;
  top: -220px;
  left: -180px;
}

.orb-2 {
  background: #ec4899;
  right: -220px;
  top: 35%;
}

.orb-3 {
  background: #38bdf8;
  bottom: -250px;
  left: 25%;
}

.app {
  position: relative;
  z-index: 1;
  width: min(100%, 760px);
  min-height: 100vh;
  margin: auto;
  padding: 22px 20px 35px;
}

.topbar {
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: white;
  text-decoration: none;
  font-family: "Space Grotesk", sans-serif;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.brand > span:last-child span {
  color: var(--purple-light);
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #8b5cf6, #ec4899);
  box-shadow: 0 7px 25px rgba(139, 92, 246, 0.35);
  font-size: 17px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn,
.profile-level {
  height: 38px;
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.045);
  backdrop-filter: blur(12px);
}

.icon-btn {
  width: 38px;
  border-radius: 12px;
  font-size: 15px;
  transition: 0.2s;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.09);
  transform: translateY(-2px);
}

.profile-level {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 11px;
  border-radius: 12px;
}

.profile-level span {
  color: var(--muted);
  font-size: 9px;
  font-weight: 800;
}

.profile-level strong {
  color: white;
  font-size: 14px;
}

/* Screens */

.screen {
  display: none;
}

.screen.active {
  display: block;
}

/* Home */

.hero {
  text-align: center;
  padding: 48px 0 34px;
}

.daily-pill {
  width: fit-content;
  margin: 0 auto 30px;
  padding: 8px 13px;
  display: flex;
  align-items: center;
  gap: 7px;
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: 99px;
  background: rgba(139, 92, 246, 0.08);
  color: #aaa0cf;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 1.3px;
}

.daily-pill strong {
  color: #d5c9ff;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px rgba(52, 211, 153, 0.08);
  animation: pulse 1.8s infinite;
}

.hero-icon {
  width: 112px;
  height: 112px;
  margin: auto;
  border-radius: 35px;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 30% 25%, rgba(255,255,255,.16), transparent 30%),
    linear-gradient(145deg, rgba(139,92,246,.22), rgba(236,72,153,.08));
  border: 1px solid rgba(255,255,255,.08);
  box-shadow:
    0 20px 70px rgba(113, 72, 226, 0.2),
    inset 0 1px rgba(255,255,255,.08);
  animation: floating 4s ease-in-out infinite;
}

.brain-glow {
  font-size: 51px;
  filter: drop-shadow(0 10px 25px rgba(167, 139, 250, 0.45));
}

.hero h1 {
  margin-top: 27px;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(45px, 10vw, 72px);
  line-height: .93;
  letter-spacing: -4px;
}

.hero h1 span {
  background: linear-gradient(110deg, #c4b5fd, #f0abfc, #f9a8d4);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-copy {
  margin: 23px auto 29px;
  color: var(--muted);
  line-height: 1.65;
  font-size: 14px;
}

.play-btn {
  min-height: 56px;
  min-width: 190px;
  padding: 0 19px 0 25px;
  border-radius: 17px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  background: linear-gradient(110deg, #7c3aed, #a855f7 55%, #ec4899);
  box-shadow:
    0 12px 35px rgba(139, 92, 246, 0.28),
    inset 0 1px rgba(255,255,255,.25);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1px;
  transition: transform .2s, box-shadow .2s;
}

.play-btn b {
  width: 31px;
  height: 31px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,.16);
  font-size: 17px;
}

.play-btn:hover {
  transform: translateY(-3px);
  box-shadow:
    0 18px 45px rgba(139, 92, 246, 0.38),
    inset 0 1px rgba(255,255,255,.3);
}

.play-btn:active {
  transform: translateY(0) scale(.98);
}

.quick-stats {
  width: min(100%, 420px);
  margin: 38px auto 0;
  padding: 15px 20px;
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,.025);
  border-radius: 17px;
  display: flex;
  align-items: center;
  justify-content: space-around;
}

.quick-stats div:not(.stat-divider) {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.quick-stats small {
  color: #6f7392;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 1px;
}

.quick-stats strong {
  font-size: 15px;
}

.stat-divider {
  width: 1px;
  height: 25px;
  background: rgba(255,255,255,.08);
}

.how-card {
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,.025);
  border-radius: var(--radius);
  padding: 8px;
}

.how-item {
  padding: 16px 17px;
  display: flex;
  align-items: center;
  gap: 15px;
}

.how-number {
  color: #8074a7;
  font-family: "Space Grotesk", sans-serif;
  font-size: 10px;
  font-weight: 700;
}

.how-item strong {
  font-size: 13px;
}

.how-item p {
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
}

/* Game */

.game-top {
  margin-top: 25px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}

.game-stat {
  padding: 13px 15px;
  border-radius: 16px;
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,.035);
}

.game-stat:nth-child(2) {
  text-align: center;
}

.game-stat:last-child {
  text-align: right;
}

.game-stat small {
  display: block;
  color: #6f7392;
  font-size: 8px;
  letter-spacing: 1px;
  font-weight: 800;
}

.game-stat strong {
  display: block;
  margin-top: 4px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 20px;
}

.combo-stat strong {
  color: #d8c8ff;
}

.timer-wrap {
  position: relative;
  margin-top: 19px;
}

.timer-track {
  width: 100%;
  height: 5px;
  overflow: hidden;
  border-radius: 10px;
  background: rgba(255,255,255,.07);
}

.timer-bar {
  height: 100%;
  width: 100%;
  transform-origin: left;
  border-radius: inherit;
  background: linear-gradient(90deg, #a78bfa, #ec4899);
  transition: width .05s linear;
}

.timer-text {
  position: absolute;
  right: 0;
  top: 10px;
  color: var(--muted);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

.instruction {
  margin: 38px 0 19px;
  display: flex;
  align-items: center;
  gap: 13px;
}

.instruction > span {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(139,92,246,.1);
  border: 1px solid rgba(139,92,246,.16);
  font-size: 17px;
}

.instruction strong {
  font-size: 13px;
}

.instruction p {
  margin-top: 2px;
  color: var(--muted);
  font-size: 10px;
}

.game-board {
  width: 100%;
  aspect-ratio: 1 / 1;
  padding: 11px;
  display: grid;
  gap: 8px;
  border-radius: 26px;
  border: 1px solid rgba(255,255,255,.08);
  background:
    linear-gradient(145deg, rgba(255,255,255,.055), rgba(255,255,255,.018));
  box-shadow:
    0 25px 70px rgba(0,0,0,.25),
    inset 0 1px rgba(255,255,255,.06);
}

.tile {
  position: relative;
  border-radius: 12px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.05);
  transition: transform .15s, filter .15s;
  overflow: hidden;
}

.tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255,255,255,.16),
    transparent 40%
  );
  pointer-events: none;
}

.tile:hover {
  transform: scale(.96);
  filter: brightness(1.18);
}

.tile-symbol {
  position: relative;
  z-index: 1;
  font-size: clamp(15px, 4vw, 29px);
  filter: drop-shadow(0 4px 7px rgba(0,0,0,.18));
  transition: transform .15s;
}

.tile.correct {
  animation: correctTile .4s ease forwards;
}

.tile.wrong {
  animation: wrongTile .4s ease;
}

.game-footer {
  margin-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lives {
  display: flex;
  gap: 4px;
}

.lives span {
  color: #fb7185;
  font-size: 17px;
  filter: drop-shadow(0 3px 7px rgba(251,113,133,.3));
}

.lives span.empty {
  color: #373950;
  filter: none;
}

.difficulty {
  display: flex;
  align-items: center;
  gap: 8px;
}

.difficulty > span {
  color: #62667f;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: .8px;
}

.difficulty-dots {
  display: flex;
  gap: 3px;
}

.difficulty-dots i {
  width: 11px;
  height: 4px;
  border-radius: 4px;
  background: #282b42;
}

.difficulty-dots i.active {
  background: linear-gradient(90deg, #8b5cf6, #ec4899);
}

.quit-btn {
  padding: 8px 11px;
  color: #70748e;
  background: transparent;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .8px;
}

/* Result */

.result-card {
  margin-top: 45px;
  padding: 37px 24px 28px;
  border-radius: 29px;
  border: 1px solid var(--card-border);
  background: rgba(18,21,45,.72);
  box-shadow: var(--shadow);
  text-align: center;
  backdrop-filter: blur(20px);
}

.result-badge {
  width: fit-content;
  margin: auto;
  padding: 6px 10px;
  border-radius: 99px;
  color: #aaa0cf;
  background: rgba(139,92,246,.08);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 1.2px;
}

.result-icon {
  margin-top: 24px;
  font-size: 42px;
  animation: pop .5s cubic-bezier(.17,.89,.32,1.3);
}

.result-card h2 {
  margin-top: 14px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 35px;
  letter-spacing: -1.5px;
}

.result-card > p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

.final-score {
  margin: 29px 0 25px;
}

.final-score small {
  color: #6f7392;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 1.2px;
}

.final-score strong {
  display: block;
  margin-top: 4px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 48px;
  letter-spacing: -2px;
}

.new-record {
  width: fit-content;
  margin: 8px auto 0;
  padding: 5px 8px;
  display: none;
  border-radius: 7px;
  color: #fbbf24;
  background: rgba(250,204,21,.08);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: .7px;
}

.new-record.show {
  display: block;
}

.result-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.result-stats div {
  padding: 15px 5px;
}

.result-stats div + div {
  border-left: 1px solid rgba(255,255,255,.06);
}

.result-stats span {
  display: block;
  color: #6f7392;
  font-size: 7px;
  font-weight: 800;
  letter-spacing: .7px;
}

.result-stats strong {
  display: block;
  margin-top: 5px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 16px;
}

.xp-progress {
  margin: 23px 0;
  text-align: left;
}

.xp-header {
  display: flex;
  justify-content: space-between;
  color: #7d819d;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: .5px;
}

.xp-header b {
  color: #c8c2dc;
}

.xp-track {
  height: 5px;
  margin-top: 8px;
  overflow: hidden;
  border-radius: 99px;
  background: #25283d;
}

.xp-track > div {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, #8b5cf6, #ec4899);
  transition: width .8s ease;
}

.result-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.secondary-btn {
  padding: 12px 18px;
  color: #7f839d;
  background: transparent;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .9px;
}

/* Modal */

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: none;
  place-items: center;
  padding: 20px;
}

.modal.show {
  display: grid;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3,4,12,.72);
  backdrop-filter: blur(10px);
}

.level-modal-card {
  position: relative;
  width: min(100%, 370px);
  padding: 35px 25px;
  border: 1px solid var(--card-border);
  border-radius: 27px;
  background: #12152d;
  box-shadow: var(--shadow);
  text-align: center;
  animation: modalIn .3s ease;
}

.close-modal {
  position: absolute;
  top: 12px;
  right: 15px;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  color: #8589a3;
  background: rgba(255,255,255,.05);
  font-size: 20px;
}

.level-big {
  font-family: "Space Grotesk", sans-serif;
  font-size: 40px;
  font-weight: 700;
}

.level-big span {
  color: #c4b5fd;
}

.level-modal-card h3 {
  margin-top: 8px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 20px;
}

.level-modal-card > p {
  margin: 8px auto 25px;
  max-width: 280px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

.modal-xp {
  text-align: left;
}

.modal-xp > div:first-child {
  display: flex;
  justify-content: space-between;
  color: #7e829e;
  font-size: 9px;
  font-weight: 800;
}

/* Toast */

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 100;
  width: min(calc(100% - 40px), 340px);
  padding: 13px 15px;
  display: flex;
  align-items: center;
  gap: 11px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 15px;
  background: rgba(18,21,45,.94);
  box-shadow: 0 15px 45px rgba(0,0,0,.35);
  backdrop-filter: blur(20px);
  transform: translate(-50%, 130%);
  transition: transform .35s cubic-bezier(.17,.89,.32,1.2);
}

.toast.show {
  transform: translate(-50%, 0);
}

.toast > span {
  font-size: 20px;
}

.toast strong {
  font-size: 11px;
}

.toast p {
  margin-top: 2px;
  color: var(--muted);
  font-size: 9px;
}

/* Particles */

.particles {
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  animation: particleFly .7s ease-out forwards;
}

/* Animations */

@keyframes floating {
  0%, 100% {
    transform: translateY(0) rotate(-2deg);
  }
  50% {
    transform: translateY(-8px) rotate(2deg);
  }
}

@keyframes pulse {
  50% {
    box-shadow: 0 0 0 8px rgba(52,211,153,0);
  }
}

@keyframes correctTile {
  0% {
    transform: scale(1);
  }
  45% {
    transform: scale(.88);
  }
  100% {
    transform: scale(1.08);
    filter: brightness(1.7);
    opacity: .35;
  }
}

@keyframes wrongTile {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}

@keyframes pop {
  from {
    transform: scale(.5);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes particleFly {
  to {
    transform:
      translate(
        calc((var(--x) - 50) * 1px),
        calc((var(--y) - 50) * 1px)
      )
      rotate(180deg);
    opacity: 0;
  }
}

/* Responsive */

@media (max-width: 520px) {

  .app {
    padding: 14px 14px 28px;
  }

  .hero {
    padding-top: 38px;
  }

  .hero-icon {
    width: 92px;
    height: 92px;
    border-radius: 29px;
  }

  .brain-glow {
    font-size: 42px;
  }

  .hero h1 {
    font-size: 49px;
    letter-spacing: -3px;
  }

  .quick-stats {
    margin-top: 30px;
  }

  .game-board {
    gap: 6px;
    padding: 8px;
    border-radius: 21px;
  }

  .tile {
    border-radius: 9px;
  }

  .game-top {
    gap: 6px;
  }

  .game-stat {
    padding: 10px 11px;
  }

  .game-stat strong {
    font-size: 17px;
  }

  .difficulty > span {
    display: none;
  }

  .result-card {
    margin-top: 28px;
  }
}

@media (min-width: 700px) {

  .how-card {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .how-item + .how-item {
    border-left: 1px solid rgba(255,255,255,.06);
  }
}