:root {
  --bg-0: #120d0b;
  --bg-1: #1d1411;
  --panel: rgba(20, 14, 11, 0.9);
  --line: rgba(206, 170, 125, 0.3);
  --text: #f2e9dc;
  --muted: #c3b29c;
  --heart: #e2bb84;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 14% 8%, rgba(168, 124, 79, 0.16), transparent 30%),
    linear-gradient(160deg, var(--bg-0), var(--bg-1));
  display: flex;
  justify-content: center;
}

.book-shell {
  width: min(430px, 100vw);
  min-height: 100vh;
  margin: 0;
  padding: 10px 8px calc(14px + env(safe-area-inset-bottom));
  display: grid;
  gap: 8px;
}

.book-head,
.book-panel,
.hint-panel {
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(34, 24, 19, 0.92), rgba(16, 12, 10, 0.94)),
    repeating-linear-gradient(10deg, rgba(255, 255, 255, 0.017) 0 2px, rgba(0, 0, 0, 0.025) 2px 7px);
  padding: 12px;
  box-shadow: inset 0 1px 0 rgba(255, 228, 188, 0.07);
}

.book-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.book-head h1 {
  margin: 0;
  font-size: clamp(22px, 4.8vw, 30px);
}

.tip-emphasis {
  margin-top: 10px;
  color: #b9ffb8;
  font-weight: 800;
  border: 1px solid rgba(126, 226, 126, 0.6);
  border-radius: 10px;
  padding: 9px 10px;
  background: rgba(22, 58, 28, 0.42);
}

.back-link {
  text-decoration: none;
  color: #ffd7a2;
  border: 1px solid rgba(226, 188, 136, 0.45);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 13px;
  background: rgba(35, 24, 19, 0.8);
}

.heart-info {
  margin: 0 0 10px;
  color: var(--heart);
  font-weight: 700;
}

.formula-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.formula-tab {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: rgba(30, 21, 16, 0.95);
  color: var(--text);
  font-size: 12px;
  cursor: pointer;
}

.formula-tab.active {
  border-color: rgba(241, 194, 111, 0.8);
  background: rgba(75, 53, 20, 0.72);
  color: #ffe6ba;
}

.formula-head {
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
}

.formula-head label {
  font-size: 12px;
  color: var(--muted);
}

.formula-name {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 17, 13, 0.95);
  color: var(--text);
  padding: 8px;
}

.formula-core {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 17, 13, 0.95);
  color: var(--text);
  padding: 8px;
}

.save-btn {
  margin-top: 10px;
  border: 0;
  border-radius: 10px;
  padding: 10px 12px;
  font-weight: 700;
  color: #f7ebd8;
  border: 1px solid rgba(226, 188, 136, 0.5);
  background: linear-gradient(180deg, #7f5a3e, #4d3527);
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.45);
}

.grid-editor-panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  background: rgba(24, 17, 13, 0.88);
}

.circle-slot-panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  background: rgba(24, 17, 13, 0.88);
}

.circle-slot-panel h2 {
  margin: 0;
  font-size: 15px;
}

.circle-slots {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.circle-slot-row {
  display: grid;
  gap: 6px;
  border: 1px solid rgba(173, 130, 84, 0.35);
  border-radius: 10px;
  padding: 9px 8px;
  background: rgba(28, 20, 15, 0.9);
  min-height: 134px;
  cursor: pointer;
}

.circle-slot-row.active {
  border-color: rgba(241, 194, 111, 0.82);
  box-shadow: 0 0 0 1px rgba(255, 224, 165, 0.25);
}

.circle-slot-row.drag-over {
  border-color: rgba(144, 204, 255, 0.92);
  box-shadow: 0 0 0 1px rgba(144, 204, 255, 0.3);
  background: rgba(29, 24, 20, 0.95);
}

.circle-slot-label {
  font-size: 12px;
  color: var(--heart);
  font-weight: 700;
}

.circle-slot-cards {
  display: grid;
  gap: 4px;
}

.circle-spell-card {
  width: 100%;
  border: 1px solid rgba(170, 136, 101, 0.48);
  border-radius: 9px;
  background: rgba(33, 23, 18, 0.92);
  color: var(--text);
  padding: 8px;
  text-align: left;
  display: grid;
  gap: 2px;
}

.circle-spell-card strong {
  font-size: 13px;
}

.circle-spell-card span {
  font-size: 10px;
  color: var(--muted);
}

.circle-spell-card.selected {
  border-color: rgba(242, 201, 131, 0.9);
  box-shadow: 0 0 0 1px rgba(255, 224, 165, 0.38);
}

.circle-spell-card.neutral {
  border-style: dashed;
  color: #d8c3a3;
}

.circle-spell-card.red { border-left: 3px solid rgba(205, 96, 79, 0.95); }
.circle-spell-card.blue { border-left: 3px solid rgba(98, 153, 222, 0.95); }
.circle-spell-card.green { border-left: 3px solid rgba(108, 177, 114, 0.95); }
.circle-spell-card.yellow { border-left: 3px solid rgba(215, 173, 89, 0.95); }
.circle-spell-card.white { border-left: 3px solid rgba(201, 222, 245, 0.95); }
.circle-spell-card.black { border-left: 3px solid rgba(130, 110, 166, 0.95); }

.circle-slot-empty {
  margin: 0;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.35;
  min-height: 52px;
  border: 1px dashed rgba(170, 136, 101, 0.36);
  border-radius: 8px;
  padding: 8px;
  display: grid;
  place-items: center;
  text-align: center;
}

.slot-clear-btn {
  margin-top: 4px;
  border: 1px solid rgba(190, 146, 104, 0.56);
  border-radius: 8px;
  padding: 5px 6px;
  font-size: 11px;
  color: #f8ddbc;
  background: rgba(51, 31, 22, 0.9);
}

.circle-spell-head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.circle-spell-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  border: 1px solid rgba(182, 145, 104, 0.55);
  background-color: rgba(20, 14, 11, 0.95);
  background-position: center;
  background-repeat: no-repeat;
  background-size: 34px 34px;
  flex: 0 0 auto;
}

.slot-spell-detail {
  margin-top: 8px;
  border: 1px solid rgba(165, 130, 93, 0.4);
  border-radius: 8px;
  padding: 8px;
  font-size: 11px;
  line-height: 1.35;
  color: #dfccb0;
  background: rgba(26, 18, 14, 0.9);
  grid-column: 1 / -1;
}

.grid-editor-panel h2 {
  margin: 0;
  font-size: 15px;
}

.grid-hint {
  margin: 6px 0 10px;
  font-size: 12px;
  color: var(--muted);
}

.formula-grid {
  --cols: 6;
  --rows: 3;
  --cell: 44px;
  display: grid;
  grid-template-columns: repeat(var(--cols), var(--cell));
  grid-template-rows: repeat(var(--rows), var(--cell));
  gap: 0;
  width: calc(var(--cols) * var(--cell));
  height: calc(var(--rows) * var(--cell));
  margin: 0 auto;
  border: 1px solid rgba(173, 130, 84, 0.45);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(37, 26, 21, 0.94), rgba(20, 14, 11, 0.95)),
    repeating-linear-gradient(to right, rgba(120, 82, 51, 0.36) 0 1px, transparent 1px var(--cell)),
    repeating-linear-gradient(to bottom, rgba(120, 82, 51, 0.36) 0 1px, transparent 1px var(--cell)),
    repeating-linear-gradient(12deg, rgba(255, 255, 255, 0.017) 0 2px, rgba(0, 0, 0, 0.03) 2px 8px);
}

.grid-marker {
  position: relative;
  box-sizing: border-box;
  border-radius: 4px;
  pointer-events: none;
  z-index: 4;
}

.grid-marker.blocked {
  border: 1px solid rgba(74, 52, 35, 0.7);
  background:
    repeating-linear-gradient(135deg, rgba(40, 30, 22, 0.75) 0 6px, rgba(22, 16, 12, 0.9) 6px 12px);
}

.grid-marker.link-preview-source {
  border-color: rgba(165, 210, 255, 0.9);
  background:
    radial-gradient(circle at 50% 50%, rgba(129, 196, 255, 0.24), rgba(70, 118, 171, 0.14) 64%, transparent 84%),
    rgba(90, 61, 39, 0.28);
  box-shadow:
    inset 0 0 0 1px rgba(150, 210, 255, 0.5),
    0 0 10px rgba(95, 160, 255, 0.35);
}

.grid-marker.resonance-slot {
  position: relative;
  border-color: rgba(130, 194, 255, 0.62);
  background:
    radial-gradient(circle at 50% 50%, rgba(109, 177, 245, 0.15), rgba(47, 80, 116, 0.08) 68%, transparent 90%),
    rgba(90, 61, 39, 0.24);
}

.grid-marker.resonance-slot::before {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 999px;
  border: 1px dashed rgba(161, 214, 255, 0.58);
  opacity: 0.8;
  pointer-events: none;
}

.grid-marker.resonance-ready {
  position: relative;
  border-color: rgba(255, 220, 138, 0.84);
  background:
    radial-gradient(circle at 50% 50%, rgba(255, 216, 122, 0.2), rgba(184, 128, 58, 0.1) 68%, transparent 88%),
    rgba(90, 61, 39, 0.3);
  box-shadow:
    inset 0 0 0 1px rgba(255, 233, 170, 0.32),
    0 0 8px rgba(255, 182, 88, 0.34);
}

.grid-marker.link-preview-match {
  position: relative;
  border-color: rgba(255, 220, 138, 0.98);
  background:
    radial-gradient(circle at 50% 50%, rgba(255, 216, 122, 0.3), rgba(184, 128, 58, 0.18) 68%, transparent 88%),
    rgba(90, 61, 39, 0.3);
  box-shadow:
    inset 0 0 0 1px rgba(255, 233, 170, 0.62),
    0 0 12px rgba(255, 182, 88, 0.52);
  animation: linkPulse 0.95s ease-in-out infinite alternate;
}

.grid-marker.link-preview-match::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  width: 16px;
  height: 16px;
  background: center / contain no-repeat url("assets/status/mark.svg");
  filter: drop-shadow(0 0 5px rgba(255, 198, 102, 0.72));
  padding: 2px;
  border-radius: 999px;
  border: 1px solid rgba(255, 232, 178, 0.75);
  background-color: rgba(93, 56, 20, 0.74);
  box-shadow: 0 0 8px rgba(255, 188, 95, 0.42);
}

.grid-marker.drag-resonance-slot {
  position: relative;
}

.grid-marker.drag-resonance-slot::after {
  content: "";
  position: absolute;
  inset: 9px;
  box-sizing: border-box;
  pointer-events: none;
  background:
    center / 72% 72% no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cpath d='M50 9 L61.2 38.6 L92.8 38.6 L67.1 57.1 L76.9 88.8 L50 70.3 L23.1 88.8 L32.9 57.1 L7.2 38.6 L38.8 38.6 Z' fill='none' stroke='%23f4f4f4' stroke-width='4' stroke-linejoin='round' stroke-linecap='round'/%3E%3C/svg%3E"),
    radial-gradient(circle at 50% 50%, rgba(176, 176, 176, 0.9), rgba(88, 88, 88, 0.94) 74%),
    center / 100% 100% no-repeat url("assets/ui/frame/rune_glow_mask.png");
  border-radius: 999px;
  border: 1px solid rgba(208, 208, 208, 0.95);
  box-shadow:
    inset 0 0 0 1px rgba(238, 238, 238, 0.28),
    0 0 10px rgba(142, 142, 142, 0.4);
  opacity: 1;
}

.grid-item {
  position: relative;
  z-index: 2;
  border-radius: 6px;
  border: 1px solid rgba(225, 193, 153, 0.62);
  overflow: hidden;
  cursor: grab;
  display: grid;
  place-items: center;
}

.grid-item:active {
  cursor: grabbing;
}

.grid-item img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.88;
  filter: saturate(0.86) contrast(1.08) brightness(0.86) sepia(0.1);
  z-index: 0;
}

.grid-item::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background:
    radial-gradient(circle at 50% 110%, rgba(0, 0, 0, 0.42), transparent 64%),
    repeating-linear-gradient(14deg, rgba(255, 255, 255, 0.012) 0 1px, rgba(0, 0, 0, 0.02) 1px 6px);
}

.grid-item.drag-resonance-ready::before {
  content: "";
  position: absolute;
  inset: 9px;
  pointer-events: none;
  z-index: 4;
  border-radius: 999px;
  border: 1px solid rgba(255, 238, 193, 1);
  background:
    center / 72% 72% no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cpath d='M50 9 L61.2 38.6 L92.8 38.6 L67.1 57.1 L76.9 88.8 L50 70.3 L23.1 88.8 L32.9 57.1 L7.2 38.6 L38.8 38.6 Z' fill='none' stroke='%23fff2cd' stroke-width='4' stroke-linejoin='round' stroke-linecap='round'/%3E%3C/svg%3E"),
    radial-gradient(circle at 50% 50%, rgba(255, 224, 143, 0.92), rgba(198, 121, 38, 0.93) 74%),
    center / 100% 100% no-repeat url("assets/ui/frame/rune_glow_mask.png");
  box-shadow:
    inset 0 0 0 1px rgba(255, 244, 217, 0.58),
    0 0 14px rgba(255, 194, 101, 0.82),
    0 0 24px rgba(255, 198, 92, 0.58);
  animation: resonanceTileGlow 0.9s ease-in-out infinite alternate;
}

.grid-item span {
  position: relative;
  z-index: 2;
  background: rgba(20, 11, 8, 0.5);
  color: #fdf1dd;
  border-radius: 4px;
  font-size: 10px;
  line-height: 1.2;
  padding: 2px 3px;
}

.grid-item.red { background: linear-gradient(180deg, rgba(128, 48, 38, 0.92), rgba(86, 31, 24, 0.92)); }
.grid-item.blue { background: linear-gradient(180deg, rgba(41, 81, 124, 0.92), rgba(29, 56, 88, 0.92)); }
.grid-item.yellow { background: linear-gradient(180deg, rgba(150, 114, 42, 0.92), rgba(96, 70, 25, 0.92)); }
.grid-item.green { background: linear-gradient(180deg, rgba(58, 103, 52, 0.92), rgba(35, 72, 31, 0.92)); }
.grid-item.white { background: linear-gradient(180deg, rgba(174, 188, 205, 0.92), rgba(110, 121, 138, 0.92)); }
.grid-item.black { background: linear-gradient(180deg, rgba(70, 58, 88, 0.94), rgba(34, 28, 44, 0.94)); }

.grid-rotate-btn {
  position: absolute;
  right: 2px;
  top: 2px;
  z-index: 3;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid rgba(240, 218, 186, 0.7);
  background: rgba(35, 20, 14, 0.78);
  color: #ffe8c7;
  font-size: 11px;
  line-height: 1;
  padding: 0;
  min-height: 0;
}

.grid-remove-btn {
  position: absolute;
  left: 2px;
  top: 2px;
  z-index: 3;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid rgba(240, 218, 186, 0.7);
  background: rgba(35, 20, 14, 0.78);
  color: #ffe8c7;
  font-size: 12px;
  line-height: 1;
  padding: 0;
  min-height: 0;
}

.catalog-panel {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  background: rgba(24, 17, 13, 0.88);
}

.catalog-panel h2 {
  margin: 0 0 8px;
  font-size: 15px;
}

.catalog-filters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 8px;
}

.catalog-filters label {
  display: grid;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}

.catalog-filters select {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 17, 13, 0.95);
  color: var(--text);
  padding: 7px 8px;
}

.spell-catalog {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  max-height: 360px;
  overflow: auto;
  padding-right: 4px;
}

.spell-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
  background: rgba(24, 17, 13, 0.95);
  cursor: grab;
  border-left-width: 4px;
}

.spell-card.dragging {
  opacity: 0.62;
}

.spell-card.red {
  border-left-color: rgba(205, 96, 79, 0.95);
}

.spell-card.blue {
  border-left-color: rgba(98, 153, 222, 0.95);
}

.spell-card.green {
  border-left-color: rgba(108, 177, 114, 0.95);
}

.spell-card.yellow {
  border-left-color: rgba(215, 173, 89, 0.95);
}

.spell-card.white {
  border-left-color: rgba(201, 222, 245, 0.95);
}

.spell-card.black {
  border-left-color: rgba(130, 110, 166, 0.95);
}

.spell-card:active {
  cursor: grabbing;
}

.spell-card.used {
  border-color: rgba(231, 195, 134, 0.72);
  background: rgba(46, 32, 24, 0.95);
}

.spell-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.spell-head-badges {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.spell-card h3 {
  margin: 0;
  font-size: 13px;
}

.spell-used-badge {
  border: 1px solid rgba(245, 214, 160, 0.72);
  border-radius: 999px;
  padding: 2px 7px;
  font-size: 10px;
  line-height: 1;
  color: #ffe7bf;
  background: rgba(101, 67, 31, 0.5);
  white-space: nowrap;
}

.spell-mana-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid rgba(145, 204, 255, 0.6);
  border-radius: 999px;
  padding: 2px 7px;
  font-size: 10px;
  line-height: 1;
  color: #d7edff;
  background: rgba(26, 54, 86, 0.55);
  white-space: nowrap;
}

.spell-mana-badge img {
  width: 12px;
  height: 12px;
}

.spell-card p {
  margin: 4px 0 0;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.35;
}

.spell-meta {
  display: flex;
  align-items: center;
  gap: 6px;
}

.spell-color-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  flex: 0 0 auto;
}

.spell-color-dot.red { background: #d06958; }
.spell-color-dot.blue { background: #74a9e7; }
.spell-color-dot.yellow { background: #d7b164; }
.spell-color-dot.green { background: #7dbd80; }
.spell-color-dot.white { background: #d5e4f8; }
.spell-color-dot.black { background: #7e6aa4; }

.spell-effects {
  display: grid;
  gap: 3px;
}

.effect-line {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.effect-tone {
  margin-left: auto;
  font-style: normal;
  font-size: 10px;
  line-height: 1;
  border-radius: 999px;
  padding: 2px 6px;
  border: 1px solid rgba(157, 142, 122, 0.45);
  color: #c8b9a4;
  background: rgba(49, 37, 29, 0.55);
}

.effect-line.buff .effect-tone {
  border-color: rgba(112, 201, 166, 0.55);
  color: #bff2de;
  background: rgba(24, 64, 52, 0.55);
}

.effect-line.debuff .effect-tone {
  border-color: rgba(221, 127, 106, 0.58);
  color: #ffd0c5;
  background: rgba(84, 37, 29, 0.58);
}

.effect-icon {
  width: 13px;
  height: 13px;
  flex: 0 0 auto;
  opacity: 0.95;
}

.catalog-empty {
  margin: 0;
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 12px;
}

.save-msg {
  min-height: 18px;
  margin: 8px 0 0;
  font-size: 12px;
  color: #b8dfff;
}

.hint-panel h2 {
  margin: 0 0 8px;
  font-size: 16px;
}

.hint-panel p {
  margin: 4px 0;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 680px) {
  .book-head { align-items: flex-start; flex-direction: column; }
  .formula-grid { --cell: 34px; }
  .catalog-filters { grid-template-columns: 1fr; }
  .book-shell { padding-left: 6px; padding-right: 6px; }
  .circle-slots { grid-template-columns: 1fr 1fr; }
}

@keyframes linkPulse {
  from { filter: brightness(1); }
  to { filter: brightness(1.12); }
}

@keyframes resonanceRuneGlow {
  from { transform: translate(-50%, -50%) scale(0.96); filter: brightness(0.96) saturate(1.05); }
  to { transform: translate(-50%, -50%) scale(1.04); filter: brightness(1.16) saturate(1.2); }
}

@keyframes resonanceTileGlow {
  from { filter: brightness(0.96) saturate(1.04); opacity: 0.92; }
  to { filter: brightness(1.16) saturate(1.2); opacity: 1; }
}