/* 缪斯创想 MUSEAGENT —— Components */

/* ── Nav ──────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background var(--d-2) var(--e-out), box-shadow var(--d-2) var(--e-out);
}
.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(20px) saturate(180%);
  box-shadow: var(--sh-1);
}
.nav__inner {
  width: min(100% - var(--pad) * 2, var(--max-wide));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-weight: 700;
  font-size: var(--fs-lg);
  letter-spacing: var(--tr-title);
  color: var(--gray-950);
}
.logo__mark {
  width: 32px; height: 32px;
  display: grid;
  place-items: center;
  border-radius: var(--r-sm);
  background: var(--gray-950);
  color: var(--gray-0);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 700;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-7);
}
.nav__links a {
  position: relative;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--gray-700);
  transition: color var(--d-1) var(--e-out);
}
.nav__links a:hover { color: var(--gray-950); }
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--brand-600);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--d-2) var(--e-out);
}
.nav__links a[aria-current="page"]::after,
.nav__links a:hover::after { transform: scaleX(1); }

.nav__cta { display: flex; gap: var(--sp-3); }

/* hamburger */
.nav__toggle {
  display: none;
  width: 28px; height: 28px;
  position: relative;
  z-index: 1002;
}
.nav__toggle span {
  position: absolute;
  left: 2px; right: 2px;
  height: 1.5px;
  background: var(--gray-950);
  transition: transform var(--d-3) var(--e-out), opacity var(--d-3);
}
.nav__toggle span:nth-child(1) { top: 8px; }
.nav__toggle span:nth-child(2) { top: 50%; margin-top: -0.75px; }
.nav__toggle span:nth-child(3) { bottom: 8px; }

.nav.is-open .nav__toggle span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
.nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__toggle span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

@media (max-width: 900px) {
  .nav__toggle { display: block; }
  .nav__links,
  .nav__cta { display: none; }

  .nav__drawer {
    position: fixed;
    inset: 0;
    z-index: 1001;
    background: rgba(251, 252, 253, 0.96);
    backdrop-filter: blur(24px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--sp-6);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--d-3) var(--e-out);
  }
  .nav.is-open .nav__drawer {
    opacity: 1;
    pointer-events: auto;
  }
  .nav__drawer a {
    font-size: var(--fs-3xl);
    font-weight: 600;
    color: var(--gray-950);
  }
  .nav__drawer .nav__cta { display: flex; margin-top: var(--sp-6); }
}

/* ── Footer ───────────────────────────────────────────────────── */
.footer {
  background: var(--d-bg-deep);
  color: var(--d-ink-3);
  padding-block: var(--sec-y) var(--sp-10);
  font-size: var(--fs-sm);
}
.footer a { color: var(--d-ink-2); transition: color var(--d-1); }
.footer a:hover { color: var(--d-ink); }

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 13px 22px;
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.01em;
  transition: transform var(--d-3) var(--e-out),
              background var(--d-1) var(--e-out),
              box-shadow var(--d-2) var(--e-out),
              color var(--d-1);
}
.btn:active { transform: translateY(1px) scale(0.99); }

.btn--primary {
  background: var(--brand-600);
  color: var(--gray-0);
  box-shadow: var(--sh-2);
}
.btn--primary:hover {
  background: var(--brand-500);
  box-shadow: var(--sh-brand);
}

.btn--secondary {
  background: var(--gray-950);
  color: var(--gray-0);
}
.btn--secondary:hover { background: var(--gray-800); }

.btn--ghost {
  background: transparent;
  color: var(--gray-700);
  box-shadow: inset 0 0 0 1px var(--gray-300);
}
.btn--ghost:hover {
  color: var(--gray-950);
  box-shadow: inset 0 0 0 1px var(--gray-500);
}

.section--dark .btn--ghost {
  color: var(--d-ink-2);
  box-shadow: inset 0 0 0 1px var(--d-line);
}
.section--dark .btn--ghost:hover {
  color: var(--d-ink);
  background: rgba(255, 255, 255, 0.06);
}

.btn--text {
  padding: 8px 0;
  color: var(--brand-600);
}
.btn--text:hover { color: var(--brand-700); }

.btn--sm { padding: 9px 16px; font-size: var(--fs-xs); }

/* ── Chip ─────────────────────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--gray-100);
  color: var(--gray-700);
}
.chip--brand { background: var(--brand-a10); color: var(--brand-700); }
.chip--ok    { background: rgba(11, 122, 97, 0.10); color: var(--fn-ok); }
.chip--warn  { background: rgba(154, 100, 16, 0.10); color: var(--fn-warn); }
.chip--dot::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: currentColor;
}

/* ── Slot image placeholder ───────────────────────────────────── */
.slot {
  --slot-bg: linear-gradient(152deg, var(--gray-50), #E9EEF4 52%, var(--gray-100));
  position: relative;
  width: 100%;
  aspect-ratio: var(--ar, 4 / 5);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--slot-bg);
  display: grid;
  place-items: center;
  isolation: isolate;
}

.slot__texture {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(58deg,
      var(--gray-200) 0 1px,
      transparent 1px 14px);
  opacity: 0.42;
  pointer-events: none;
}

.slot__wire {
  width: 26%;
  height: auto;
  color: var(--gray-400);
  stroke-width: 1.25;
  fill: none;
  opacity: 0.55;
  pointer-events: none;
}

.slot__label {
  position: absolute;
  left: var(--sp-4); bottom: var(--sp-4);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--gray-500);
  z-index: 2;
}

.slot__spec {
  position: absolute;
  right: var(--sp-4); bottom: var(--sp-4);
  padding: 4px 8px;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.06em;
  background: var(--gray-0);
  color: var(--gray-600);
  box-shadow: var(--sh-1);
  z-index: 2;
}

.slot__status {
  position: absolute;
  top: var(--sp-4); right: var(--sp-4);
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--fn-warn);
  z-index: 2;
}

.slot__sheen {
  position: absolute;
  inset: -50% -100%;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.10) 50%, transparent 60%);
  transform: translateX(-120%) rotate(18deg);
  animation: slotSheen 8s var(--e-inout) infinite;
  pointer-events: none;
}
@keyframes slotSheen {
  0%, 80%, 100% { transform: translateX(-120%) rotate(18deg); opacity: 0; }
  90% { opacity: 1; }
  95% { transform: translateX(120%) rotate(18deg); }
}

/* filled state */
.slot img,
.slot.is-filled .slot__texture,
.slot.is-filled .slot__wire,
.slot.is-filled .slot__label,
.slot.is-filled .slot__spec,
.slot.is-filled .slot__status,
.slot.is-filled .slot__sheen,
.slot:has(img) .slot__texture,
.slot:has(img) .slot__wire,
.slot:has(img) .slot__label,
.slot:has(img) .slot__spec,
.slot:has(img) .slot__status,
.slot:has(img) .slot__sheen { display: none; }

.slot img {
  display: block;   /* 修复：filled-state 规则误将 .slot img 设为 none，导致真实图不显示 */
  width: 100%; height: 100%;
  object-fit: cover;
}

.section--dark .slot {
  --slot-bg: linear-gradient(152deg, var(--d-surface), var(--d-surface-2));
}
.section--dark .slot__texture {
  background: repeating-linear-gradient(58deg, rgba(255,255,255,0.08) 0 1px, transparent 1px 14px);
}
.section--dark .slot__label,
.section--dark .slot__wire { color: var(--d-ink-4); }
.section--dark .slot__spec {
  background: var(--d-surface-2);
  color: var(--d-ink-3);
}

/* ── Forms ────────────────────────────────────────────────────── */
.input {
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--r-sm);
  background: var(--gray-50);
  box-shadow: inset 0 0 0 1px var(--gray-200);
  font-size: var(--fs-base);
  transition: box-shadow var(--d-2) var(--e-out), background var(--d-1);
}
.input::placeholder { color: var(--gray-400); }
.input:hover { background: var(--gray-25); }
.input:focus {
  background: var(--gray-0);
  box-shadow: inset 0 0 0 1px var(--brand-300), var(--ring);
}

.section--dark .input {
  background: var(--d-surface-2);
  box-shadow: inset 0 0 0 1px var(--d-line);
  color: var(--d-ink);
}
.section--dark .input::placeholder { color: var(--d-ink-4); }
.section--dark .input:focus {
  background: var(--d-surface);
  box-shadow: inset 0 0 0 1px var(--brand-400), 0 0 0 3px rgba(79,147,214,0.25);
}

.textarea { min-height: 120px; resize: vertical; }

.label {
  display: block;
  margin-bottom: var(--sp-2);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--gray-700);
}

/* ── Card primitives ──────────────────────────────────────────── */
.card {
  background: var(--gray-0);
  border-radius: var(--r-lg);
  padding: var(--sp-7);
  box-shadow: var(--sh-1);
  transition: transform var(--d-3) var(--e-out), box-shadow var(--d-3) var(--e-out);
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-3);
}

.card--dark {
  background: var(--d-surface);
  box-shadow: var(--sh-bevel), var(--sh-2);
  color: var(--d-ink-2);
}
.card--dark:hover { box-shadow: var(--sh-bevel), var(--sh-4); }
.card--dark .h-card { color: var(--d-ink); }

/* ── Raised panel (dark on light) ─────────────────────────────── */
.panel {
  background: var(--d-bg);
  color: var(--d-ink-2);
  border-radius: var(--r-2xl);
  padding: clamp(28px, 4vw, 52px);
  box-shadow: var(--sh-4), var(--sh-bevel);
  position: relative;
  overflow: hidden;
}
.panel::before {
  content: "";
  position: absolute;
  top: -30%; left: -20%; right: -20%; height: 60%;
  background: radial-gradient(ellipse at 50% 0%, rgba(20,102,196,0.14), transparent 60%);
  pointer-events: none;
}