:root {
  --bg-a: #fff4d8;
  --bg-b: #d6f1fb;
  --bg-c: #ffd8c4;
  --panel: rgba(255, 255, 255, 0.84);
  --ink: #13213a;
  --muted: #4b5f7a;
  --accent: #ff6f3c;
  --accent-2: #008e9b;
  --good: #1da864;
  --bad: #d64545;
  --wood-1: #8a5a33;
  --wood-2: #5f3a1e;
  --wood-3: #432713;
  --metal: #76879a;
  --shadow: 0 14px 28px rgba(20, 32, 58, 0.2);
  --open-col-width: clamp(56px, 9vw, 86px);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next Condensed", "Futura", "Gill Sans", sans-serif;
  color: var(--ink);
  background: linear-gradient(130deg, var(--bg-a), var(--bg-b) 45%, var(--bg-c));
  overflow-x: hidden;
}

.backdrop-shape {
  position: fixed;
  border-radius: 50%;
  filter: blur(1px);
  opacity: 0.45;
  pointer-events: none;
}

.shape-a {
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, #fff7ea 0%, transparent 70%);
  top: -80px;
  left: -70px;
}

.shape-b {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, #b2e9ff 0%, transparent 70%);
  right: -120px;
  bottom: -140px;
}

.start-menu {
  position: fixed;
  inset: 0;
  z-index: 12;
  display: grid;
  place-items: center;
  padding: 18px;
  background:
    radial-gradient(1200px 580px at 14% 16%, rgba(255, 240, 209, 0.55), transparent 70%),
    radial-gradient(900px 500px at 86% 10%, rgba(177, 237, 255, 0.42), transparent 72%),
    linear-gradient(145deg, rgba(22, 34, 53, 0.78), rgba(38, 20, 13, 0.82));
  backdrop-filter: blur(5px);
}

.start-menu.hidden {
  display: none;
}

.menu-card {
  width: min(560px, 94vw);
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.9), rgba(252, 239, 226, 0.9)),
    repeating-linear-gradient(
      170deg,
      rgba(255, 255, 255, 0.34) 0 8px,
      rgba(255, 255, 255, 0.14) 8px 16px
    );
  box-shadow: 0 28px 60px rgba(5, 10, 22, 0.4);
  padding: 22px 22px 24px;
  position: relative;
  overflow: hidden;
}

.menu-card::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(11, 130, 145, 0.18) 0%, transparent 72%);
  top: -90px;
  right: -70px;
  pointer-events: none;
}

.menu-kicker {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: #0e5f75;
}

.menu-card h2 {
  margin: 4px 0 0;
  font-family: "Impact", "Haettenschweiler", "Franklin Gothic Heavy", sans-serif;
  font-size: clamp(1.9rem, 4.2vw, 2.55rem);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #102344;
}

.menu-sub {
  margin: 4px 0 12px;
  color: #31496a;
  font-size: 0.97rem;
}

.menu-quote {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 12px;
  border-left: 4px solid #0c8195;
  background: rgba(15, 61, 85, 0.08);
  color: #1b3556;
  font-size: 1.02rem;
  font-weight: 600;
  min-height: 60px;
}

.menu-label {
  display: block;
  margin-top: 6px;
  margin-bottom: 4px;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #355070;
}

.difficulty-select {
  width: 100%;
  border-radius: 10px;
  border: 1px solid rgba(20, 43, 72, 0.25);
  background: rgba(255, 255, 255, 0.94);
  color: #122b4f;
  padding: 10px 12px;
  font-size: 1rem;
  font-weight: 700;
}

.difficulty-select:focus-visible {
  outline: 2px solid rgba(16, 115, 135, 0.45);
  outline-offset: 1px;
}

.difficulty-hint {
  margin: 8px 0 14px;
  min-height: 24px;
  color: #355070;
  font-weight: 600;
}

.menu-start-btn {
  width: 100%;
}

.app-shell {
  width: min(1180px, 94vw);
  margin: 24px auto;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 16px;
  position: relative;
  z-index: 1;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow);
  border-radius: 20px;
  backdrop-filter: blur(8px);
}

.game-panel {
  padding: 18px 18px 22px;
}

.topbar h1 {
  margin: 0;
  letter-spacing: 0.07em;
  font-family: "Impact", "Haettenschweiler", "Franklin Gothic Heavy", sans-serif;
  font-size: clamp(1.8rem, 2.6vw, 2.5rem);
  text-transform: uppercase;
}

.topbar p {
  margin: 4px 0 14px;
  color: var(--muted);
  font-size: 0.98rem;
}

.hud-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.hud-card {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(18, 38, 70, 0.08);
  border-radius: 14px;
  padding: 10px 12px;
}

.hud-card h2 {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hud-card p {
  margin: 2px 0 0;
  font-size: 1.7rem;
  font-weight: 700;
}

.target-card {
  background: linear-gradient(150deg, #e1f8ff, #fdf5ea);
  border: 2px solid rgba(0, 124, 138, 0.22);
}

#target-note {
  color: #0e5163;
  font-size: 2.4rem;
  line-height: 1;
  width: 70px;
  height: 70px;
  margin-top: 5px;
  border-radius: 999px;
  border: 3px solid rgba(0, 142, 155, 0.58);
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 6px 14px rgba(15, 95, 120, 0.22);
}

.target-pop {
  animation: targetPulse 0.34s ease-out;
}

@keyframes targetPulse {
  0% {
    transform: scale(0.85);
  }
  60% {
    transform: scale(1.08);
  }
  100% {
    transform: scale(1);
  }
}

#goal-text {
  color: var(--muted);
}

.life-hit {
  animation: lifePulse 0.26s ease-out;
}

@keyframes lifePulse {
  0% {
    transform: translateY(0);
  }
  25% {
    transform: translateY(-3px);
  }
  100% {
    transform: translateY(0);
  }
}

.timer-wrap {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.timer-track {
  flex: 1;
  position: relative;
  height: 16px;
  border-radius: 999px;
  background: rgba(18, 37, 69, 0.1);
  overflow: hidden;
  border: 1px solid rgba(18, 37, 69, 0.18);
}

.timer-bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #d34b3e 0%, #efc84f 52%, #2ac66b 100%);
  transition: width 80ms linear, filter 80ms linear;
}

#timer-text {
  min-width: 56px;
  margin: 0;
  font-weight: 700;
  text-align: right;
}

.status-text {
  min-height: 24px;
  margin: 10px 0 8px;
  font-weight: 600;
  color: #203254;
}

.fretboard-shell {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(23, 40, 70, 0.16);
  background: #5b3720;
}

.fret-labels {
  display: grid;
  grid-template-columns: var(--fret-columns, repeat(13, minmax(30px, 1fr)));
  background: rgba(23, 35, 54, 0.2);
  border-bottom: 1px solid rgba(23, 40, 70, 0.22);
}

.fret-label {
  text-align: center;
  font-size: 0.75rem;
  color: #f0f5ff;
  padding: 4px 0;
  font-weight: 600;
}

.fret-label.open-label {
  color: #0f2f52;
  background: linear-gradient(180deg, #dfe6ef, #c4d0de);
  border-right: 4px solid #f3f8ff;
}

.fretboard {
  background: linear-gradient(115deg, var(--wood-1), var(--wood-2) 62%, var(--wood-3));
}

.string-row {
  display: grid;
  grid-template-columns: var(--fret-columns, repeat(13, minmax(30px, 1fr)));
  position: relative;
}

.string-row::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  border-top: var(--string-thickness, 1.6px) solid rgba(237, 246, 255, 0.8);
  box-shadow: 0 0 0 1px rgba(104, 122, 146, 0.26);
  transform: translateY(-50%);
  pointer-events: none;
}

.fret-cell {
  position: relative;
  height: 52px;
  border: 1px solid rgba(34, 44, 61, 0.36);
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  transition: transform 110ms ease, background-color 110ms ease;
}

.fret-cell::after {
  content: "";
  width: 15px;
  height: 15px;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.56);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(255, 255, 255, 0.2);
  box-shadow: inset 0 0 0 1px rgba(41, 56, 80, 0.18);
  opacity: 0;
  transition: opacity 110ms ease;
}

.fret-cell::before {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: rgba(232, 204, 169, 0.85);
  opacity: 0;
}

.fret-cell.fret-marker::before {
  opacity: 1;
}

.fret-cell:hover,
.fret-cell:focus-visible {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.12);
  outline: none;
}

.fret-cell:hover::after,
.fret-cell:focus-visible::after {
  opacity: 0.72;
}

.fret-cell.hit {
  animation: hitPulse 260ms ease-out;
  background: rgba(39, 177, 104, 0.42);
}

.fret-cell.hit::after {
  border-color: #d2ffeb;
  background: rgba(210, 255, 235, 0.95);
  opacity: 1;
}

.fret-cell.miss {
  animation: missShake 190ms ease-in-out;
  background: rgba(215, 64, 64, 0.46);
}

.fret-cell[disabled] {
  cursor: default;
  opacity: 0.95;
}

.open-cell {
  background: linear-gradient(180deg, #dce4f0, #bbc8d8);
  border-left: none;
  border-right: 4px solid #eef4ff;
}

.open-cell::after {
  opacity: 0.56;
  border-color: rgba(33, 55, 82, 0.32);
  background: rgba(255, 255, 255, 0.6);
}

.open-cell::before {
  display: none;
}

.board-shake {
  animation: boardShake 240ms ease-in-out;
}

@keyframes hitPulse {
  0% {
    transform: scale(1);
  }
  55% {
    transform: scale(1.07);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes missShake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-3px);
  }
  75% {
    transform: translateX(3px);
  }
}

@keyframes boardShake {
  0%,
  100% {
    transform: translateX(0);
  }
  20% {
    transform: translateX(-5px);
  }
  60% {
    transform: translateX(5px);
  }
}

.controls {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: transform 110ms ease, filter 110ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
  filter: brightness(1.05);
  outline: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: linear-gradient(130deg, #ff8f5a, var(--accent));
  color: #fff;
}

.btn-secondary {
  background: linear-gradient(130deg, #1289be, #0f6e9a);
  color: #fff;
}

.leaderboard-panel {
  padding: 14px;
}

.leaderboard-panel h2 {
  margin: 2px 0 0;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-family: "Impact", "Haettenschweiler", "Franklin Gothic Heavy", sans-serif;
}

.leader-sub {
  color: var(--muted);
  margin: 4px 0 12px;
  font-size: 0.9rem;
}

.leaderboard-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.leaderboard-item {
  display: grid;
  grid-template-columns: 26px 1fr auto;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(19, 34, 57, 0.08);
  border-radius: 10px;
  padding: 7px 8px;
}

.leaderboard-empty {
  color: var(--muted);
  font-style: italic;
}

.leader-rank {
  font-weight: 700;
  color: var(--accent-2);
}

.leader-name {
  letter-spacing: 0.08em;
  font-weight: 700;
}

.leader-score {
  font-weight: 700;
}

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(17, 26, 44, 0.46);
  z-index: 10;
}

.modal.hidden {
  display: none;
}

.modal-card {
  width: min(420px, 92vw);
  background: #fffdf8;
  border-radius: 14px;
  padding: 18px;
  border: 1px solid rgba(19, 34, 57, 0.16);
  box-shadow: 0 20px 40px rgba(14, 23, 40, 0.28);
}

.modal-card h2 {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.modal-card p {
  margin: 8px 0 12px;
}

.save-form {
  margin-bottom: 10px;
}

.save-form.hidden {
  display: none;
}

.save-row {
  display: flex;
  gap: 8px;
  margin-top: 5px;
}

#initials {
  width: 82px;
  border-radius: 8px;
  border: 1px solid rgba(19, 34, 57, 0.24);
  padding: 8px;
  text-transform: uppercase;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
}

.save-hint {
  color: #364a68;
  min-height: 24px;
}

#fx-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9;
}

.popup {
  position: absolute;
  font-weight: 800;
  font-size: 1rem;
  color: #0a653f;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.75);
  transition: transform 420ms ease-out, opacity 420ms ease-out;
  text-shadow: 0 2px 0 rgba(255, 255, 255, 0.9);
}

.popup.show {
  opacity: 1;
  transform: translate(-50%, -120%) scale(1);
}

.popup.miss-popup {
  color: #a32828;
}

.popup.bonus-popup {
  color: #0f5f8e;
  font-size: 1.1rem;
}

@media (max-width: 1020px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .leaderboard-panel {
    order: -1;
  }
}

@media (max-width: 780px) {
  .menu-card {
    padding: 18px 16px 18px;
  }

  .hud-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .fret-cell {
    height: 48px;
  }
}