/* ============================================================
   Library page — Walter Prompt Library
   Extends styles.css. Light, paper-flat, brand-blue accents.
   ============================================================ */

/* Solid nav variant for non-hero pages */
.nav--solid {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.86);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--alpha-100);
  padding: 14px 0;
}

/* ─── Library hero ─── */
.lib-hero {
  padding: 56px 0 40px;
  background:
    radial-gradient(800px 360px at 50% -10%, rgb(225,231,244) 0%, rgba(225,231,244,0) 60%),
    var(--surface-1);
}
.lib-eyebrow { margin-bottom: 20px; }
.lib-h1 {
  font: var(--fw-semibold) 48px/1.05 var(--font-sans);
  letter-spacing: -0.7px;
  margin: 0 0 16px;
  color: var(--text-primary);
  text-wrap: balance;
}
.lib-sub {
  font: var(--fw-regular) 18px/1.55 var(--font-sans);
  color: var(--text-secondary);
  margin: 0 0 28px;
  max-width: 640px;
}
.lib-card-use {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 10px 16px;
  border-radius: var(--radius-lg);
  background: var(--brand-blue-600);
  color: #fff;
  font: var(--fw-semibold) var(--label-2-size)/1 var(--font-sans);
  align-self: flex-start;
  text-decoration: none;
  transition: all 120ms cubic-bezier(.2,0,0,1);
}
.lib-card-use:hover { background: var(--brand-blue-700); transform: translateY(-1px); }
.lib-card-use svg { width: 13px; height: 13px; transition: transform 120ms; }
.lib-card-use:hover svg { transform: translateX(3px); }
.lib-meta {
  display: flex;
  gap: 32px;
  border-top: 1px solid var(--alpha-100);
  padding-top: 20px;
  margin-top: 8px;
}
.lib-meta-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.lib-meta-num {
  font: var(--fw-semibold) 22px/1 var(--font-sans);
  color: var(--brand-blue-600);
  font-feature-settings: "tnum";
}
.lib-meta-label {
  font: var(--fw-medium) 12px/1 var(--font-sans);
  letter-spacing: 0.2px;
  color: var(--text-tertiary);
  text-transform: uppercase;
}

/* ─── Filter bar (sticky) ─── */
.lib-filter-wrap {
  position: sticky;
  top: 62px; /* below solid nav */
  z-index: 5;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-top: 1px solid var(--alpha-100);
  border-bottom: 1px solid var(--alpha-100);
}
.lib-filter-row {
  display: flex;
  gap: 16px;
  align-items: center;
  padding-top: 12px;
  padding-bottom: 12px;
}
.lib-pills {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  flex: 1;
  scrollbar-width: none;
}
.lib-pills::-webkit-scrollbar { display: none; }
.lib-pill {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px;
  border-radius: var(--radius-pill);
  background: transparent;
  border: 1px solid transparent;
  font: var(--fw-medium) var(--label-2-size)/1 var(--font-sans);
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all 120ms cubic-bezier(.2,0,0,1);
}
.lib-pill:hover { background: var(--alpha-50); color: var(--text-primary); }
.lib-pill.is-active {
  background: var(--brand-blue-600);
  color: #fff;
  border-color: var(--brand-blue-600);
}
.lib-pill .lib-pill-count {
  font: var(--fw-medium) 11px/1 var(--font-mono);
  opacity: 0.6;
}
.lib-pill.is-active .lib-pill-count { opacity: 0.7; }

.lib-search {
  position: relative;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  width: 260px;
  max-width: 100%;
}
.lib-search svg {
  position: absolute;
  left: 11px;
  width: 14px; height: 14px;
  color: var(--text-tertiary);
  pointer-events: none;
}
.lib-search input {
  width: 100%;
  height: 36px;
  border: 1px solid var(--alpha-100);
  border-radius: var(--radius-pill);
  padding: 0 14px 0 32px;
  background: var(--surface-raised);
  font: var(--fw-regular) var(--body-2-size)/1 var(--font-sans);
  color: var(--text-primary);
  transition: border-color 120ms, box-shadow 120ms;
}
.lib-search input::placeholder { color: var(--text-placeholder); }
.lib-search input:focus {
  outline: none;
  border-color: var(--brand-blue-400);
  box-shadow: 0 0 0 3px var(--brand-blue-100);
}

/* ─── Library grid ─── */
.lib-main { padding: 32px 0 80px; min-height: 50vh; }
.lib-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 14px;
}
.lib-card {
  background: var(--surface-raised);
  border: 1px solid var(--alpha-100);
  border-radius: var(--radius-2xl);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scroll-margin-top: 140px;
  position: relative;
  transition: border-color 120ms, box-shadow 120ms;
}
.lib-card:hover {
  border-color: var(--alpha-200);
  box-shadow: var(--shadow-sm);
}
.lib-card.is-locked { background: linear-gradient(180deg, var(--surface-raised) 0%, var(--surface-raised) 60%, var(--brand-blue-50) 100%); }
.lib-card.is-section-start { grid-column: 1 / -1; }

/* Card header */
.lib-card-hd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.lib-card-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: var(--fw-medium) 11px/1 var(--font-mono);
  letter-spacing: 0.3px;
  color: var(--brand-blue-600);
  text-transform: uppercase;
}
.lib-card-num {
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  background: var(--brand-blue-50);
  border: 1px solid var(--brand-blue-100);
  font-weight: var(--fw-semibold);
  color: var(--brand-blue-700);
}
.lib-card-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--alpha-100);
  background: var(--surface-1);
  font: var(--fw-medium) var(--label-3-size)/1 var(--font-sans);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 120ms cubic-bezier(.2,0,0,1);
}
.lib-card-copy:hover {
  background: var(--brand-blue-600);
  color: #fff;
  border-color: var(--brand-blue-600);
}
.lib-card-copy svg { width: 12px; height: 12px; }
.lib-card-copy.is-copied {
  background: var(--tw-green-600);
  border-color: var(--tw-green-600);
  color: #fff;
}

/* Card body */
.lib-card-title {
  font: var(--fw-semibold) var(--h5-size)/1.25 var(--font-sans);
  letter-spacing: var(--h5-track);
  color: var(--text-primary);
  margin: 0;
  text-wrap: balance;
}
.lib-card-desc {
  font: var(--fw-regular) var(--body-2-size)/1.5 var(--font-sans);
  color: var(--text-secondary);
  margin: 0;
  text-wrap: pretty;
}

/* Prompt block */
.lib-card-prompt {
  position: relative;
  background: var(--tw-neutral-900);
  color: var(--tw-neutral-200);
  border-radius: var(--radius-xl);
  padding: 16px 18px;
  font: var(--fw-regular) 12.5px/1.65 var(--font-mono);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  max-height: 220px;
  overflow: hidden;
  border: 1px solid var(--tw-neutral-800);
}
.lib-card-prompt::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 36px;
  background: linear-gradient(180deg, rgba(28,25,23,0) 0%, var(--tw-neutral-900) 100%);
  pointer-events: none;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}
.lib-card-prompt .ph {
  color: var(--brand-blue-300);
  background: rgba(5,106,255,0.18);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
}
.lib-card-prompt .num { color: #f1c47b; font-weight: var(--fw-medium); }
.lib-card-prompt .kw { color: #c4a5ff; font-weight: var(--fw-medium); }
.lib-card-prompt-toggle {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  background: var(--tw-neutral-800);
  color: var(--tw-neutral-200);
  border: 1px solid var(--tw-neutral-700);
  border-radius: var(--radius-pill);
  font: var(--fw-medium) 11px/1 var(--font-sans);
  padding: 5px 12px;
  cursor: pointer;
}
.lib-card.is-expanded .lib-card-prompt { max-height: none; }
.lib-card.is-expanded .lib-card-prompt::after { display: none; }

/* Outcome + meta */
.lib-card-outcome {
  font: var(--fw-regular) var(--body-3-size)/1.55 var(--font-sans);
  color: var(--text-secondary);
  margin: 0;
}
.lib-card-outcome b {
  color: var(--text-primary);
  font-weight: var(--fw-semibold);
  margin-right: 4px;
}
.lib-card-foot {
  display: flex;
  gap: 16px;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--alpha-100);
  font: var(--fw-medium) 11px/1 var(--font-mono);
  color: var(--text-tertiary);
  flex-wrap: wrap;
}
.lib-card-foot span { display: inline-flex; align-items: center; gap: 6px; }
.lib-card-foot b {
  color: var(--text-secondary);
  font-weight: var(--fw-semibold);
}
.lib-card-foot .lib-foot-dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--text-placeholder);
}

/* Locked overlay */
.lib-card-lock {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0) 30%, rgba(244,247,253,0.94) 75%);
  border-radius: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding: 24px;
  text-align: center;
  pointer-events: auto;
}
.lib-card-lock-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: var(--brand-blue-600);
  color: #fff;
  font: var(--fw-medium) var(--label-3-size)/1 var(--font-sans);
  text-decoration: none;
  margin-top: 8px;
}
.lib-card-lock-pill:hover { background: var(--brand-blue-700); }
.lib-card-lock-text {
  font: var(--fw-medium) var(--body-3-size)/1.4 var(--font-sans);
  color: var(--text-secondary);
}
.lib-card-lock svg { width: 16px; height: 16px; }

/* Section divider */
.lib-section-head {
  grid-column: 1 / -1;
  padding: 32px 4px 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.lib-section-head:first-of-type { padding-top: 0; }
.lib-section-head h2 {
  font: var(--fw-semibold) 22px/1.2 var(--font-sans);
  letter-spacing: -0.2px;
  color: var(--text-primary);
  margin: 0;
}
.lib-section-head .lib-section-num {
  font: var(--fw-medium) 11px/1 var(--font-mono);
  color: var(--brand-blue-600);
  letter-spacing: 0.3px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 4px;
}
.lib-section-count {
  font: var(--fw-regular) var(--body-3-size)/1 var(--font-sans);
  color: var(--text-tertiary);
}

/* ─── Empty state ─── */
.lib-empty {
  text-align: center;
  padding: 80px 24px;
  border: 1px dashed var(--alpha-200);
  border-radius: var(--radius-2xl);
  background: var(--surface-raised);
}
.lib-empty-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--brand-blue-50);
  color: var(--brand-blue-500);
  display: inline-flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.lib-empty h3 {
  font: var(--fw-semibold) var(--h5-size)/1.2 var(--font-sans);
  margin: 0 0 6px;
  color: var(--text-primary);
}
.lib-empty p {
  font: var(--fw-regular) var(--body-2-size)/1.5 var(--font-sans);
  color: var(--text-secondary);
  margin: 0;
}

/* ─── Unlock band ─── */
.unlock-band {
  padding: 80px 0;
  background: var(--tw-neutral-900);
  color: #fff;
}
.unlock-card {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}
.unlock-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  font: var(--fw-medium) var(--label-3-size)/1 var(--font-sans);
  color: rgba(255,255,255,0.7);
  margin-bottom: 18px;
}
.unlock-eyebrow svg { width: 13px; height: 13px; color: var(--brand-blue-400); }
.unlock-card h2 {
  font: var(--fw-semibold) 36px/1.1 var(--font-sans);
  letter-spacing: -0.5px;
  margin: 0 0 14px;
  text-wrap: balance;
}
.unlock-card p {
  font: var(--fw-regular) var(--body-1-size)/1.55 var(--font-sans);
  color: rgba(255,255,255,0.7);
  margin: 0 auto 28px;
  max-width: 480px;
}
.unlock-card .email-form {
  margin: 0 auto;
  max-width: 460px;
  justify-content: center;
}
.unlock-card .w-input {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.16);
}
.unlock-card .w-input input { color: #fff; }
.unlock-card .w-input input::placeholder { color: rgba(255,255,255,0.4); }
.unlock-card .w-input .input-icon { color: rgba(255,255,255,0.5); }
.unlock-card .w-input:focus-within { box-shadow: 0 0 0 4px rgba(5,106,255,0.4); }
.unlock-card .email-form.is-submitted::before {
  background: rgba(34,197,94,0.12);
  border-color: rgba(34,197,94,0.35);
  color: var(--tw-green-100);
}

/* ─── Toast ─── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  z-index: 100;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  background: var(--tw-neutral-900);
  color: #fff;
  font: var(--fw-medium) var(--label-2-size)/1 var(--font-sans);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms cubic-bezier(.2,0,0,1), transform 180ms cubic-bezier(.2,0,0,1);
}
.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast svg { color: var(--tw-green-400); }

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .lib-grid { grid-template-columns: 1fr; }
  .lib-filter-wrap { top: 58px; }
  .lib-h1 { font-size: 36px; letter-spacing: -0.4px; }
  .lib-filter-row { flex-direction: column; align-items: stretch; }
  .lib-search { width: 100%; }
  .unlock-card h2 { font-size: 28px; }
  .nav--solid .nav-link[href^="https"] { display: none; }
}