/* ==========================================
   ARCANE DEPTHS – Skill Tree CSS (v1.0)
   Aesthetic: dark arcane, crystalline purple,
   luminous gold accents, runic glow.
   ========================================== */

/* ── SCREEN ───────────────────────────────── */
#skilltree-screen {
    position: fixed !important;
    inset: 0 !important;
    z-index: 5000 !important;
    display: none;
    flex-direction: column;
    overflow: hidden;
    background: #0a0612;
    font-family: 'Segoe UI', system-ui, sans-serif;
}
#skilltree-screen.active { display: flex !important; }

/* Grid-noise background */
#skilltree-screen::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -10%, rgba(109,40,217,0.18) 0%, transparent 70%),
        url("data:image/svg+xml,%3Csvg width='40' height='40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h40v40H0z' fill='none'/%3E%3Cpath d='M0 40L40 0M-10 10L10-10M30 50L50 30' stroke='rgba(90,60,140,0.07)' stroke-width='1'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
}

/* ── HEADER ───────────────────────────────── */
.st-header {
    position: relative;
    z-index: 2;
    padding: 14px 20px 10px;
    border-bottom: 1px solid rgba(139,92,246,0.25);
    background: rgba(10,6,18,0.85);
    backdrop-filter: blur(8px);
    flex-shrink: 0;
}

.st-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.st-title {
    margin: 0;
    font-size: clamp(18px, 2vw, 26px);
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    background: linear-gradient(135deg, #e8d5ff 0%, #a78bfa 50%, #7c3aed 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

.st-essence-display {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(139,92,246,0.12);
    border: 1px solid rgba(139,92,246,0.35);
    border-radius: 20px;
    padding: 5px 14px;
}
.st-essence-icon { font-size: 18px; }
.st-essence-label { font-size: 13px; color: #a78bfa; }
.st-essence-val {
    font-size: 20px;
    font-weight: 700;
    color: #ffd700;
    letter-spacing: 1px;
}

/* ── TABS ─────────────────────────────────── */
.st-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}
.st-tab {
    padding: 6px 22px;
    border: 1px solid rgba(139,92,246,0.35);
    border-radius: 6px;
    background: rgba(139,92,246,0.06);
    color: #c4b5fd;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.2s ease;
}
.st-tab:hover {
    background: rgba(139,92,246,0.18);
    border-color: #7c3aed;
    color: #e0d0ff;
}
.st-tab.active {
    background: linear-gradient(135deg, rgba(124,58,237,0.35), rgba(91,33,182,0.25));
    border-color: #8b5cf6;
    color: #fff;
    box-shadow: 0 0 12px rgba(139,92,246,0.30);
}

/* ── SUBINFO + ZOOM ───────────────────────── */
.st-subinfo {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: #7c6fa0;
}
.st-zoom-controls { display: flex; gap: 4px; }
.st-zoom-btn {
    width: 26px; height: 26px;
    border: 1px solid rgba(139,92,246,0.35);
    border-radius: 4px;
    background: rgba(139,92,246,0.08);
    color: #c4b5fd;
    font-size: 14px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.15s;
}
.st-zoom-btn:hover { background: rgba(139,92,246,0.22); }

/* ── VIEWPORT ─────────────────────────────── */
.st-viewport {
    position: relative;
    flex: 1;
    overflow: auto;
    cursor: grab;
    z-index: 1;
    scrollbar-width: thin;
    scrollbar-color: #7b4dff #1a1a2e;
}
.st-viewport:active { cursor: grabbing; }

.st-inner {
    position: absolute;
    top: 20px;
    left: 20px;
    transform-origin: 0 0;
    transition: transform 0.05s linear;
}

.st-nodes {
    position: relative;
    pointer-events: none;
}

/* ── NODES ────────────────────────────────── */
.st-node {
    position: absolute;
    width: 72px;
    height: 72px;
    border-radius: 12px;
    border: 2px solid;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    cursor: default;
    pointer-events: all;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
    user-select: none;
    backdrop-filter: blur(4px);
}

.st-node-tier {
    position: absolute;
    top: 2px; left: 4px;
    font-size: 8px;
    opacity: 0.5;
    letter-spacing: 0.5px;
}
.st-node-icon {
    font-size: 22px;
    line-height: 1;
    filter: drop-shadow(0 0 6px currentColor);
    transition: transform 0.2s ease;
}
.st-node-name {
    font-size: 8px;
    text-align: center;
    line-height: 1.2;
    max-width: 68px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding: 0 3px;
    font-weight: 600;
    letter-spacing: 0.4px;
}
.st-node-cost {
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* States */
.st-node--owned {
    background: linear-gradient(135deg, rgba(91,33,182,0.45), rgba(67,20,143,0.35));
    border-color: #8b5cf6;
    color: #e0d0ff;
    box-shadow: 0 0 16px rgba(139,92,246,0.45), inset 0 0 8px rgba(139,92,246,0.15);
}
.st-node--owned .st-node-cost { color: #7c3aed; }
.st-node--owned .st-node-icon { filter: drop-shadow(0 0 8px #a78bfa); }

.st-node--available {
    background: rgba(20,10,40,0.80);
    border-color: #6d59a0;
    color: #c4b5fd;
    cursor: pointer;
    box-shadow: 0 0 6px rgba(139,92,246,0.15);
}
.st-node--available:hover {
    transform: translateY(-3px) scale(1.06);
    border-color: #a78bfa;
    box-shadow: 0 0 22px rgba(167,139,250,0.55), 0 4px 12px rgba(0,0,0,0.4);
}
.st-node--available:hover .st-node-icon { transform: scale(1.15); }
.st-node--available .st-node-cost { color: #ffd700; }

.st-node--locked {
    background: rgba(10,6,18,0.75);
    border-color: #2d2040;
    color: #4a3d6a;
    cursor: not-allowed;
}
.st-node--locked .st-node-icon { filter: grayscale(80%) opacity(0.4); }

.st-node--blocked {
    background: rgba(30,10,10,0.75);
    border-color: #4a1a1a;
    color: #6b3333;
    cursor: not-allowed;
    position: relative;
    overflow: hidden;
}
.st-node--blocked::after {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        45deg,
        rgba(180,40,40,0.08) 0px, rgba(180,40,40,0.08) 2px,
        transparent 2px, transparent 8px
    );
    pointer-events: none;
}
.st-node--blocked .st-node-icon { filter: grayscale(90%) opacity(0.35); }
.st-node--blocked .st-node-cost { color: #6b3333; }

/* Animations */
@keyframes st-pop {
    0%   { transform: scale(1); }
    40%  { transform: scale(1.25); }
    70%  { transform: scale(0.95); }
    100% { transform: scale(1); }
}
.st-node--pop { animation: st-pop 0.4s ease forwards; }

@keyframes st-shake {
    0%,100% { transform: translateX(0); }
    20%      { transform: translateX(-5px); }
    40%      { transform: translateX(5px); }
    60%      { transform: translateX(-4px); }
    80%      { transform: translateX(4px); }
}
.st-node--shake { animation: st-shake 0.45s ease; }

/* Pulse glow for owned nodes */
@keyframes st-owned-pulse {
    0%,100% { box-shadow: 0 0 16px rgba(139,92,246,0.45), inset 0 0 8px rgba(139,92,246,0.15); }
    50%      { box-shadow: 0 0 26px rgba(167,139,250,0.70), inset 0 0 14px rgba(139,92,246,0.25); }
}
.st-node--owned { animation: st-owned-pulse 3s ease-in-out infinite; }

/* ── TOOLTIP ──────────────────────────────── */
.st-tooltip {
    position: absolute;
    z-index: 100;
    width: 230px;
    background: rgba(12,7,24,0.96);
    border: 1px solid rgba(139,92,246,0.45);
    border-radius: 10px;
    padding: 12px;
    pointer-events: none;
    box-shadow: 0 8px 32px rgba(0,0,0,0.6), 0 0 16px rgba(139,92,246,0.18);
    backdrop-filter: blur(12px);
    font-size: 12px;
    color: #c4b5fd;
    transition: opacity 0.12s;
}
.st-tooltip.hidden { opacity: 0; pointer-events: none; }

.tip-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}
.tip-icon { font-size: 18px; }
.tip-name {
    flex: 1;
    font-size: 13px;
    font-weight: 700;
    color: #e0d0ff;
}
.tip-state {
    font-size: 10px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 4px;
    letter-spacing: 0.5px;
}
.tip-state.owned   { background: rgba(124,58,237,0.3); color: #a78bfa; border: 1px solid #7c3aed; }
.tip-state.blocked { background: rgba(180,40,40,0.3); color: #f87171; border: 1px solid #991b1b; }
.tip-state.locked  { background: rgba(30,20,60,0.5); color: #6b5f8a; border: 1px solid #3d3060; }
.tip-state.available { background: rgba(180,130,0,0.25); color: #ffd700; border: 1px solid #b8860b; }

.tip-desc {
    font-size: 11px;
    color: #9d8fc0;
    line-height: 1.4;
    margin-bottom: 8px;
}
.tip-effects { margin-bottom: 8px; }
.tip-effect { color: #86efac; font-size: 11px; margin-bottom: 2px; }
.tip-meta, .tip-excl {
    font-size: 10px;
    color: #7c6fa0;
    margin-bottom: 3px;
    line-height: 1.35;
}
.tip-excl { color: #b45353; }
.tip-meta-label { color: #9d8fc0; font-weight: 600; }
.tip-tier {
    font-size: 10px;
    color: #4a3d6a;
    margin-top: 6px;
    text-align: right;
    letter-spacing: 1px;
}

/* ── FOOTER ───────────────────────────────── */
.st-footer {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 12px 20px;
    border-top: 1px solid rgba(139,92,246,0.18);
    background: rgba(10,6,18,0.85);
    flex-shrink: 0;
}

.st-btn-reset {
    background: rgba(100,20,20,0.4) !important;
    border-color: rgba(200,50,50,0.4) !important;
    color: #f87171 !important;
}
.st-btn-reset:hover {
    background: rgba(150,30,30,0.6) !important;
    border-color: rgba(248,113,113,0.6) !important;
}
.st-btn-reset.st-confirm {
    background: rgba(200,50,50,0.55) !important;
    border-color: #ef4444 !important;
    color: #fff !important;
    animation: st-shake 0.3s ease;
}

/* ── LEGEND ───────────────────────────────── */
.st-legend {
    display: flex;
    gap: 12px;
    align-items: center;
    font-size: 10px;
}
.st-legend-item { display: flex; align-items: center; gap: 4px; color: #7c6fa0; }
.st-legend-dot  {
    width: 10px; height: 10px; border-radius: 2px;
    border: 1.5px solid;
}
.st-legend-dot.owned   { background: rgba(91,33,182,0.5); border-color: #8b5cf6; }
.st-legend-dot.avail   { background: rgba(20,10,40,0.8); border-color: #6d59a0; }
.st-legend-dot.locked  { background: rgba(10,6,18,0.75); border-color: #2d2040; }
.st-legend-dot.blocked { background: rgba(30,10,10,0.75); border-color: #4a1a1a; }

/* ── RESPONSIVE ───────────────────────────── */
@media (max-width: 600px) {
    .st-title { font-size: 14px; }
    .st-essence-val { font-size: 16px; }
    .st-tab { padding: 5px 12px; font-size: 11px; }
}

/* ==== LAYOUT v3.0 – centrado via st-sizer, sin !important en posicion ==== */

/* Viewport: contenedor del arbol */
#st-viewport, .st-viewport {
  position: relative;
  width: 100%;
  flex: 1 1 0%;
  min-height: 420px;
  overflow: auto;
  z-index: 1;
  cursor: default;
  display: block;
  scrollbar-width: thin;
  scrollbar-color: #7b4dff #1a1a2e;
}

/* st-sizer: JS lo posiciona con left/top para centrar el arbol escalado.
   NO tiene !important en top/left para que JS pueda sobreescribirlos. */
#st-sizer {
  position: absolute;
  top: 0;
  left: 0;
  overflow: visible;
}

/* st-inner: siempre en 0,0 dentro del sizer; JS aplica scale transform.
   NO tiene !important en top/left (CSS normal < inline style de JS). */
#st-inner, .st-inner {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: top left;
}

/* Contenedor de nodos */
#st-nodes, .st-nodes {
  position: relative;
  pointer-events: none;
}

/* Los nodos reciben eventos */
.st-node {
  display: flex;
  opacity: 1;
  pointer-events: all;
  position: absolute;
}

/* Nodos locked visibles */
.st-node--locked {
  opacity: 0.75;
}

/* Zoom hint */
.st-zoom-hint {
  position: absolute;
  bottom: 8px;
  right: 12px;
  color: rgba(180,160,255,0.5);
  font-size: 11px;
  pointer-events: none;
  z-index: 10;
  font-family: inherit;
}

/* Scrollbar styling */
#st-viewport::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
#st-viewport::-webkit-scrollbar-track {
  background: rgba(20,10,40,0.5);
}
#st-viewport::-webkit-scrollbar-thumb {
  background: #7b4dff;
  border-radius: 3px;
}