/* ===========================
   Product overview page (Vertical Co-Creation Flow)
   =========================== */

/* ---- Tier (3-tier architecture) ---- */
.tier {
  border-radius: var(--radius-xl);
  padding: 32px;
  position: relative;
  overflow: hidden;
}
.tier[data-tier="cocreation"] {
  background: var(--neutral-950);
  color: var(--neutral-0);
}
.tier[data-tier="cocreation"]::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 80% 20%, color-mix(in oklch, var(--tailor-violet) 25%, transparent), transparent 60%),
    radial-gradient(circle at 20% 100%, color-mix(in oklch, var(--tailor-indigo) 20%, transparent), transparent 50%);
  pointer-events: none;
}
.tier[data-tier="omakase"] {
  background: var(--card);
  border: 1px solid color-mix(in oklch, var(--tailor-violet) 30%, var(--border));
}
.tier[data-tier="platform"] {
  background: var(--neutral-50);
  border: 1px solid var(--border);
}

.tier-head { position: relative; margin-bottom: 20px; }
.tier-label-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.tier-num {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--muted-foreground);
}
.tier[data-tier="cocreation"] .tier-num { color: rgba(255,255,255,0.55); }
.tier-pill {
  font-size: 11px; font-weight: 600;
  padding: 4px 10px; border-radius: 999px;
  background: color-mix(in oklch, var(--tailor-lime) 50%, transparent);
  color: var(--neutral-950);
  border: 1px solid color-mix(in oklch, var(--tailor-lime) 60%, transparent);
}
.tier-pill-omakase {
  background: color-mix(in oklch, var(--tailor-violet) 12%, var(--card));
  color: var(--tailor-violet);
  border-color: color-mix(in oklch, var(--tailor-violet) 35%, transparent);
}
.tier-pill-platform {
  background: color-mix(in oklch, var(--tailor-indigo) 12%, var(--card));
  color: var(--tailor-indigo);
  border-color: color-mix(in oklch, var(--tailor-indigo) 35%, transparent);
}

/* Tier 1 — Co-creation */
.cocreation-body { position: relative; }
.tier-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700; letter-spacing: -0.02em; line-height: 1.2;
  margin-bottom: 24px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  justify-content: center;
  text-align: center;
}
.cc-pair { color: var(--neutral-0); }
.cc-dash { color: rgba(255,255,255,0.4); font-weight: 400; }
.cc-action {
  background: linear-gradient(135deg, var(--tailor-lilac), var(--tailor-violet));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.cc-flow {
  display: flex; align-items: center; justify-content: center;
  gap: 8px; flex-wrap: wrap;
}
.cc-step {
  font-size: 13px; font-weight: 500;
  padding: 10px 18px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-md);
}
.cc-arrow { color: rgba(255,255,255,0.4); display: flex; align-items: center; }

/* Connector */
.tier-connector {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 0;
}
.tier-connector .connector-line {
  flex: 1; height: 1px;
  background: linear-gradient(to right, transparent, var(--neutral-400), transparent);
}
.tier-connector .connector-label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em;
  color: var(--neutral-700);
  white-space: nowrap;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
  display: inline-flex; align-items: center; gap: 6px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.tier-connector .connector-label svg { color: var(--tailor-indigo); flex-shrink: 0; }

/* Tier 2 — Omakase */
.omakase-head {
  display: flex; align-items: flex-start; gap: 16px;
  margin-bottom: 20px;
}
.omakase-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  background: color-mix(in oklch, var(--tailor-violet) 15%, var(--card));
  color: var(--tailor-violet);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.omakase-title {
  font-size: 22px; font-weight: 700; letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.omakase-title sup { font-size: 11px; font-weight: 500; color: var(--muted-foreground); }
.omakase-sub { font-size: 13px; color: var(--muted-foreground); line-height: 1.55; }
.omakase-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 20px;
}
.om-tag {
  font-size: 12px; font-weight: 500;
  padding: 6px 12px;
  background: color-mix(in oklch, var(--tailor-violet) 8%, var(--card));
  border: 1px solid color-mix(in oklch, var(--tailor-violet) 25%, transparent);
  color: var(--tailor-violet);
  border-radius: var(--radius-sm);
}
.om-tag-more {
  background: var(--card);
  color: var(--muted-foreground);
  border-color: var(--border);
}
.omakase-note {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 14px 18px;
  background: var(--neutral-50);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border);
  font-size: 13px; line-height: 1.65;
  color: var(--muted-foreground);
}
.om-note-icon {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--tailor-violet); color: white;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-style: italic; font-weight: 700;
  font-size: 11px; flex-shrink: 0; margin-top: 1px;
}

/* Tier 3 — Platform */
.sdk-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}
.sdk-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex; flex-direction: column;
}
.sdk-card-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px;
}
.sdk-icon {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: color-mix(in oklch, var(--tailor-indigo) 10%, var(--card));
  color: var(--tailor-indigo);
  display: flex; align-items: center; justify-content: center;
}
.sdk-card h4 {
  font-size: 16px; font-weight: 700; margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.sdk-points { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.sdk-points li {
  font-size: 12px; line-height: 1.55;
  color: var(--muted-foreground);
  padding-left: 12px; position: relative;
}
.sdk-points li::before {
  content: ""; position: absolute; left: 0; top: 8px;
  width: 6px; height: 1px; background: var(--neutral-400);
}

.platform-core {
  background: var(--neutral-950);
  color: var(--neutral-0);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  overflow: hidden;
}
.platform-core::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 100% 0%, color-mix(in oklch, var(--tailor-indigo) 35%, transparent), transparent 50%);
  pointer-events: none;
}
.platform-core-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px; flex-wrap: wrap; gap: 8px;
  position: relative;
}
.platform-core-head h4 {
  font-size: 20px; font-weight: 700; letter-spacing: -0.01em;
}
.platform-core-tag {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--tailor-lilac);
}
.platform-core-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-bottom: 16px;
  position: relative;
}
.pc-cell {
  font-family: var(--font-mono); font-size: 11px;
  padding: 10px 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  text-align: center;
  line-height: 1.4;
}
.platform-roles {
  display: flex; flex-direction: column; gap: 6px;
  position: relative;
}
.platform-role-row {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  font-size: 12px; line-height: 1.5;
}
.role-tag {
  font-family: var(--font-mono); font-size: 10px; font-weight: 600;
  letter-spacing: 0.1em;
  padding: 3px 8px; border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.role-tag-platform { background: var(--tailor-indigo); color: var(--neutral-0); }
.role-tag-ai { background: var(--tailor-lilac); color: var(--neutral-950); }

/* ---- Roles × Products ---- */
.roles-products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}
.rp-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
}
.rp-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0;
  height: 3px;
}
.rp-card[data-role="fde"]::before { background: var(--tailor-indigo); }
.rp-card[data-role="platform"]::before { background: var(--tailor-violet); }
.rp-card[data-role="ai"]::before { background: var(--tailor-lilac); }
.rp-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px; flex-wrap: wrap; gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.rp-tag {
  font-size: 14px; font-weight: 700;
  color: var(--tailor-indigo);
}
.rp-tag-platform { color: var(--tailor-violet); }
.rp-tag-ai { color: var(--tailor-lilac); }
.rp-layer {
  font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted-foreground);
}
.rp-list {
  display: flex; flex-direction: column; gap: 8px;
}
.rp-list li {
  font-size: 13px; line-height: 1.6;
  padding-left: 14px; position: relative;
  color: var(--foreground);
}
.rp-list li::before {
  content: ""; position: absolute; left: 0; top: 8px;
  width: 6px; height: 1px; background: var(--tailor-indigo);
}
.rp-card[data-role="platform"] .rp-list li::before { background: var(--tailor-violet); }
.rp-card[data-role="ai"] .rp-list li::before { background: var(--tailor-lilac); }
.rp-note {
  margin-top: 12px;
  padding: 12px 14px;
  background: var(--neutral-50);
  border-left: 2px solid var(--tailor-violet);
  font-size: 12px; line-height: 1.6;
  color: var(--muted-foreground);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ---- Layer Notation ---- */
.layer-notation {
  background: color-mix(in oklch, var(--tailor-lilac) 6%, var(--card));
  border: 1px solid color-mix(in oklch, var(--tailor-lilac) 25%, transparent);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}
.ln-head {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 8px;
  color: var(--tailor-violet);
}
.ln-title {
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase;
}
.ln-body {
  font-size: 13px; line-height: 1.7;
  color: var(--muted-foreground);
}

@media (max-width: 860px) {
  .tier { padding: 20px; }
  .cc-flow { gap: 4px; }
  .cc-step { font-size: 11px; padding: 6px 10px; }
  .sdk-grid { grid-template-columns: 1fr; }
  .platform-core-grid { grid-template-columns: repeat(2, 1fr); }
  .roles-products-grid { grid-template-columns: 1fr; }
}