chesscubing/styles.css

:root {
  --bg: #06131d;
  --bg-soft: rgba(11, 26, 38, 0.88);
  --panel: rgba(9, 22, 34, 0.9);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #edf6f3;
  --muted: #9bb1b6;
  --warm: #ffbd6d;
  --warm-strong: #ff8f37;
  --cool: #64dfd4;
  --cool-strong: #1bbcae;
  --white-seat: #ffd9b0;
  --dark-seat: #baf5ef;
  --danger: #ff7272;
  --success: #8fe388;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
  --radius: 28px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 189, 109, 0.16), transparent 28%),
    radial-gradient(circle at bottom right, rgba(100, 223, 212, 0.18), transparent 26%),
    linear-gradient(165deg, #020a10 0%, #07141d 45%, #0a2433 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at center, black 50%, transparent 100%);
}

.ambient {
  position: fixed;
  width: 30rem;
  height: 30rem;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.22;
  pointer-events: none;
}

.ambient-left {
  top: -12rem;
  left: -8rem;
  background: var(--warm-strong);
}

.ambient-right {
  right: -12rem;
  bottom: -9rem;
  background: var(--cool-strong);
}

a {
  color: var(--warm);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.eyebrow,
.micro-label {
  margin: 0 0 0.45rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--cool);
  font-size: 0.76rem;
}

.micro-label {
  color: var(--warm);
}

h1,
h2,
h3,
strong {
  font-family: "Baskerville", "Georgia", serif;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.lead,
.section-copy,
.preview-banner p,
.rule-card p,
.phase-subtitle,
.zone-foot,
.resume-card,
.setup-summary,
.modal-card p {
  color: var(--muted);
}

.button {
  appearance: none;
  border: 0;
  border-radius: 18px;
  padding: 0.95rem 1.15rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 160ms ease, filter 160ms ease, background 160ms ease;
  color: var(--text);
}

.button:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.button.primary {
  background: linear-gradient(135deg, var(--warm-strong), var(--warm));
  color: #20150a;
}

.button.secondary {
  background: linear-gradient(135deg, rgba(100, 223, 212, 0.18), rgba(100, 223, 212, 0.08));
  border: 1px solid rgba(100, 223, 212, 0.2);
}

.button.ghost {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.09);
}

.button.danger {
  color: #ffd8d8;
  border-color: rgba(255, 114, 114, 0.3);
}

.button.small {
  padding: 0.7rem 0.9rem;
}

.setup-shell {
  position: relative;
  width: min(1220px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.2rem 0 2rem;
}

.hero,
.panel {
  border: 1px solid var(--panel-border);
  border-radius: calc(var(--radius) + 4px);
  background: var(--panel);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.9fr);
  gap: 1.2rem;
  padding: 1.3rem;
}

.hero-copy,
.hero-preview {
  padding: 1rem;
}

.hero-preview {
  display: grid;
  gap: 1rem;
}

.hero-setup h1 {
  margin: 0;
  font-size: clamp(2.7rem, 6.5vw, 4.9rem);
  line-height: 0.95;
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.2rem;
}

.hero-pills span,
.mini-chip,
.seat-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.42rem 0.78rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
}

.preview-card,
.preview-banner,
.rule-card,
.resume-card,
.setup-summary,
.status-card,
.spine-card,
.modal-card,
.zone-inner {
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
}

.preview-card,
.preview-banner,
.rule-card,
.resume-card,
.setup-summary,
.status-card,
.spine-card,
.modal-card {
  padding: 1rem;
}

.phase-list {
  margin: 0.8rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.phase-list li + li {
  margin-top: 0.45rem;
}

.setup-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.82fr);
  gap: 1.2rem;
  margin-top: 1.2rem;
}

.panel {
  padding: 1.35rem;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.1rem;
}

.setup-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.45rem;
}

.span-2 {
  grid-column: 1 / -1;
}

.field > span,
legend {
  font-weight: 700;
}

fieldset {
  border: 0;
  margin: 0;
  padding: 0;
}

input,
textarea {
  width: 100%;
  padding: 0.95rem 1rem;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(0, 0, 0, 0.2);
  color: var(--text);
  font: inherit;
}

textarea {
  resize: vertical;
  min-height: 6rem;
}

input:focus,
textarea:focus {
  outline: 2px solid rgba(100, 223, 212, 0.35);
  outline-offset: 1px;
}

.option-grid {
  display: grid;
  gap: 0.85rem;
}

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

.preset-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.option-card {
  position: relative;
  display: grid;
  gap: 0.45rem;
  min-height: 8.7rem;
  padding: 1rem 1rem 1rem 3rem;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.option-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 189, 109, 0.3);
}

.option-card input {
  position: absolute;
  top: 1.1rem;
  left: 1rem;
  width: 1.1rem;
  height: 1.1rem;
}

.option-card:has(input:checked) {
  border-color: rgba(255, 189, 109, 0.55);
  background:
    linear-gradient(160deg, rgba(255, 189, 109, 0.17), rgba(100, 223, 212, 0.08));
}

.setup-summary {
  display: grid;
  gap: 0.38rem;
}

.setup-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.side-panel {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.resume-card.empty {
  text-align: center;
}

.resume-card strong {
  display: block;
  margin-bottom: 0.35rem;
}

.resume-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.95rem;
}

.rules-stack {
  display: grid;
  gap: 0.95rem;
}

.phase-body {
  min-height: 100dvh;
  overflow: hidden;
}

.phase-shell {
  position: relative;
  width: min(1400px, calc(100% - 1.2rem));
  min-height: 100dvh;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  gap: 0.9rem;
  padding: 0.8rem 0 0.9rem;
}

.phase-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.8rem;
  align-items: center;
}

.brand-link {
  justify-self: start;
  padding: 0.75rem 1rem;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.brand-link:hover {
  text-decoration: none;
}

.phase-title {
  text-align: center;
}

.phase-title h1 {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 3rem);
}

.phase-subtitle {
  margin: 0.25rem 0 0;
}

.utility-button {
  justify-self: end;
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.status-card {
  min-height: 6.4rem;
  display: grid;
  align-content: center;
  gap: 0.28rem;
  text-align: center;
}

.status-card span {
  color: var(--muted);
}

.status-card strong {
  font-size: clamp(1.6rem, 3.8vw, 2.7rem);
  line-height: 0.94;
}

.status-card.wide {
  background:
    linear-gradient(160deg, rgba(255, 189, 109, 0.14), rgba(100, 223, 212, 0.08));
}

.faceoff-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px) minmax(0, 1fr);
  gap: 0.8rem;
  min-height: 0;
}

.player-zone {
  min-height: 0;
}

.zone-inner {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 0.9rem;
  height: 100%;
  padding: 1rem;
}

.zone-head {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: flex-start;
}

.zone-head h2 {
  margin: 0.2rem 0 0;
  font-size: clamp(1.45rem, 3vw, 2.4rem);
}

.zone-stats {
  text-align: right;
  display: grid;
  gap: 0.2rem;
  color: var(--muted);
}

.zone-stats strong {
  font-size: 1.4rem;
  color: var(--text);
}

.seat-tag {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.light-seat {
  background: rgba(255, 189, 109, 0.14);
  color: var(--white-seat);
}

.dark-seat {
  background: rgba(100, 223, 212, 0.14);
  color: var(--dark-seat);
}

.zone-button {
  width: 100%;
  min-height: clamp(220px, 44vh, 560px);
  padding: 1rem;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  font: inherit;
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.02;
  font-size: clamp(2.1rem, 5vw, 4.5rem);
  cursor: pointer;
  color: var(--text);
  transition: transform 150ms ease, filter 150ms ease, opacity 150ms ease;
  touch-action: manipulation;
}

.zone-button:hover {
  transform: translateY(-2px);
  filter: brightness(1.04);
}

.zone-button:disabled {
  cursor: not-allowed;
  transform: none;
  opacity: 0.52;
}

.light-button {
  background:
    linear-gradient(165deg, rgba(255, 143, 55, 0.24), rgba(255, 189, 109, 0.1));
  box-shadow: inset 0 0 0 1px rgba(255, 189, 109, 0.08);
}

.dark-button {
  background:
    linear-gradient(165deg, rgba(27, 188, 174, 0.22), rgba(100, 223, 212, 0.09));
  box-shadow: inset 0 0 0 1px rgba(100, 223, 212, 0.08);
}

.zone-button.active-turn {
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.08),
    0 0 40px rgba(255, 189, 109, 0.18);
  animation: pulse 1.6s ease-in-out infinite;
}

.active-zone .zone-inner {
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.07);
}

.zone-foot {
  min-height: 3.4rem;
  margin: 0;
}

.phase-spine {
  display: grid;
  align-content: center;
  gap: 0.8rem;
}

.spine-card {
  display: grid;
  gap: 0.35rem;
}

.spine-card strong {
  font-size: clamp(1.45rem, 3vw, 2.2rem);
}

.spine-card p {
  margin-bottom: 0;
}

.spine-button {
  min-height: 4.4rem;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.modal.hidden {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 8, 14, 0.72);
  backdrop-filter: blur(6px);
}

.modal-card {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
  background: rgba(10, 23, 35, 0.96);
  box-shadow: var(--shadow);
}

.modal-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 0.8rem;
}

.modal-head h2 {
  margin-bottom: 0;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow:
      0 0 0 1px rgba(255, 255, 255, 0.08),
      0 0 28px rgba(255, 189, 109, 0.12);
  }

  50% {
    box-shadow:
      0 0 0 1px rgba(255, 255, 255, 0.1),
      0 0 38px rgba(255, 189, 109, 0.2);
  }
}

@media (max-width: 1100px) {
  .hero,
  .setup-grid,
  .mode-grid,
  .preset-grid,
  .faceoff-board,
  .status-strip {
    grid-template-columns: 1fr;
  }

  .phase-header {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .brand-link,
  .utility-button {
    justify-self: center;
  }
}

@media (max-width: 900px) {
  .setup-shell,
  .phase-shell {
    width: min(100% - 1rem, 100%);
  }

  .panel,
  .hero {
    padding: 1rem;
  }

  .setup-form {
    grid-template-columns: 1fr;
  }

  .setup-actions,
  .resume-actions,
  .modal-actions {
    display: grid;
  }

  .faceoff-board {
    grid-template-rows: minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 0.7rem;
  }

  .opponent-zone .mirrored-mobile {
    transform: rotate(180deg);
  }

  .zone-button {
    min-height: clamp(180px, 28vh, 340px);
    font-size: clamp(1.9rem, 7vw, 3.2rem);
  }
}

@media (max-width: 640px) {
  .hero-setup h1 {
    font-size: 2.7rem;
  }

  .status-card {
    min-height: 5.6rem;
  }

  .status-card strong {
    font-size: 1.9rem;
  }

  .zone-head,
  .modal-head,
  .section-heading {
    flex-direction: column;
  }

  .zone-stats {
    text-align: left;
  }

  .button,
  .spine-button {
    width: 100%;
  }
}