/* omnisecta.com - Quaderno di campo
   Handwritten CSS. Base theme: adaline (warm linen pages, sage ink, tracked mono tags).
   Type: Alegreya (species names + display), Commissioner (body/UI), DM Mono (specimen tags).
   Light theme only: this page emulates a printed field notebook. */

:root {
  /* Ink and paper */
  --linen:        #f8f9f5;
  --bone:         #eff2e8;
  --mist:         #e1e6df;
  --ink:          #0a1d08;
  --olive:        #2b390a;
  --sage:         #4a6d47;
  --sage-gray:    #6b7860;
  --sage-mist:    #a5ac9f;
  --eucalyptus:   #c9d5c5;
  --lichen:       #c5ccb6;
  --slate:        #2a332a;
  --crimson:      #991e4b;
  --amber:        #80581c;

  --font-serif: "Alegreya", Georgia, "Times New Roman", serif;
  --font-sans:  "Commissioner", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:  "DM Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Fluid scale */
  --t-display: clamp(2.6rem, 1.4rem + 5.4vw, 5.6rem);
  --t-h2:      clamp(1.5rem, 1.15rem + 1.5vw, 2.3rem);
  --t-h3:      clamp(1.2rem, 1.05rem + .7vw, 1.55rem);
  --t-body:    clamp(1rem, .96rem + .2vw, 1.1rem);
  --t-lead:    clamp(1.08rem, 1rem + .5vw, 1.3rem);
  --t-tag:     .68rem;
  --t-small:   .82rem;

  --gutter:  clamp(18px, 5vw, 76px);
  --band:    clamp(52px, 7vw, 104px);
  --rule:    1px solid var(--mist);
  --rule-ink:1px solid var(--lichen);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--linen);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--t-body);
  line-height: 1.62;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--olive); text-decoration-color: var(--lichen); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--sage); }

:focus-visible {
  outline: 2px solid var(--sage);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 60;
  background: var(--ink); color: var(--linen);
  padding: 10px 16px; font-size: var(--t-small);
}
.skip:focus { left: 8px; top: 8px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- shared type helpers ---------- */

.tag {
  font-family: var(--font-mono);
  font-size: var(--t-tag);
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--sage-gray);
}

.measure { max-width: 68ch; }

.lead {
  font-size: var(--t-lead);
  line-height: 1.55;
  color: var(--sage-gray);
}

h1, h2, h3 { margin: 0; font-weight: 500; letter-spacing: -.015em; }
h2 { font-size: var(--t-h2); line-height: 1.14; }
h3 { font-size: var(--t-h3); line-height: 1.2; }

/* Alegreya carries one job: it names things. Display, species names, pull quotes. */
.serif { font-family: var(--font-serif); font-weight: 500; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

/* ---------- header ---------- */

.masthead {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--linen) 92%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: var(--rule);
}

.masthead__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; min-height: 62px;
  padding-inline: var(--gutter);
}

.wordmark {
  display: inline-flex; align-items: center; gap: 9px;
  text-decoration: none; color: var(--ink);
  font-family: var(--font-serif); font-size: 1.34rem; font-weight: 500;
  letter-spacing: -.02em;
}
.wordmark svg { width: 21px; height: 21px; flex: none; }
.wordmark span { line-height: 1; }

.nav { display: flex; align-items: center; gap: clamp(4px, 1.2vw, 20px); }
.nav a {
  font-size: .84rem; color: var(--ink); text-decoration: none;
  padding: 6px 9px; border-radius: 999px; white-space: nowrap;
}
.nav a:hover { background: var(--bone); }
.nav a[aria-current="page"] { color: var(--sage); }

.nav__toggle {
  display: none; background: none; border: var(--rule-ink);
  border-radius: 999px; padding: 7px 14px; cursor: pointer;
  font-family: var(--font-mono); font-size: var(--t-tag);
  letter-spacing: .09em; text-transform: uppercase; color: var(--ink);
}

@media (max-width: 860px) {
  .nav__toggle { display: block; }
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--linen); border-bottom: var(--rule);
    padding: 6px var(--gutter) 14px;
  }
  .nav[data-open="true"] { display: flex; }
  .nav a { padding: 12px 2px; border-bottom: var(--rule); border-radius: 0; }
  .nav a:last-child { border-bottom: 0; }
  .nav a:hover { background: none; color: var(--sage); }
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 20px;
  font-size: .88rem; font-weight: 500; line-height: 1.1;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  border: 1px solid transparent;
  transition: background-color .18s ease, border-color .18s ease, transform .12s ease;
}
.btn--ink { background: var(--ink); color: var(--linen); }
.btn--ink:hover { background: var(--olive); }
.btn--ghost { border-color: var(--lichen); color: var(--olive); background: transparent; }
.btn--ghost:hover { border-color: var(--ink); background: var(--bone); }
.btn:active { transform: translateY(1px); }
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } .btn:active { transform: none; } }

/* ---------- sections ---------- */

.band { padding-inline: var(--gutter); padding-block: var(--band); }
.band--tight { padding-block: clamp(38px, 5vw, 68px); }
.band--bone { background: var(--bone); border-block: var(--rule); }

.band__head { margin-bottom: clamp(26px, 3.4vw, 46px); }
.band__head .measure { margin-top: 12px; }

/* ---------- hero: asymmetric split, serif anchor left, ink drawing right ---------- */

.hero {
  padding-inline: var(--gutter);
  padding-block: clamp(40px, 5.5vw, 78px) clamp(44px, 6vw, 86px);
  display: grid; gap: clamp(30px, 4vw, 56px);
  align-items: center;
}
@media (min-width: 940px) {
  .hero { grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); }
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: var(--t-display);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -.03em;
  margin-bottom: 20px;
}
.hero h1 em { font-style: italic; color: var(--sage); }

.hero__lead { max-width: 46ch; margin-bottom: 26px; }

.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }

.hero__trust {
  font-family: var(--font-mono); font-size: var(--t-tag);
  letter-spacing: .07em; text-transform: uppercase;
  color: var(--sage-gray);
  padding-top: 16px; border-top: var(--rule);
  max-width: 44ch;
}

.hero__plate { justify-self: center; width: 100%; max-width: 420px; }
.hero__plate svg { width: 100%; height: auto; }

/* ---------- editor column (Chi osserva): narrow column, hanging margin note ---------- */

.observer { display: grid; gap: clamp(22px, 3vw, 44px); }
@media (min-width: 900px) {
  .observer { grid-template-columns: minmax(0, 15rem) minmax(0, 40rem); }
}
.observer__aside { align-self: start; }
.observer__aside dt {
  font-family: var(--font-mono); font-size: var(--t-tag);
  letter-spacing: .09em; text-transform: uppercase; color: var(--sage-mist);
  margin-top: 14px;
}
.observer__aside dt:first-child { margin-top: 0; }
.observer__aside dd { margin: 2px 0 0; font-size: .92rem; }

.observer__body h2 { margin-bottom: 18px; }

.caveat {
  margin-top: 22px; padding: 16px 18px;
  background: var(--bone); border-left: 2px solid var(--crimson);
  border-radius: 0 4px 4px 0;
  font-size: .94rem;
}
.caveat b { font-weight: 600; }

/* ---------- metodo: hairline criteria rows with mono weights ---------- */

.criteria { margin: 0; padding: 0; list-style: none; border-top: var(--rule); }
.criteria li {
  display: grid; gap: 4px 20px;
  padding: 16px 0; border-bottom: var(--rule);
}
@media (min-width: 720px) {
  .criteria li { grid-template-columns: 4.5rem minmax(0, 13rem) minmax(0, 1fr); align-items: baseline; }
}
.criteria__weight {
  font-family: var(--font-mono); font-size: .82rem;
  color: var(--sage); letter-spacing: .02em;
}
.criteria__name { font-weight: 600; }
.criteria__note { color: var(--sage-gray); font-size: .94rem; }

.formula {
  margin-top: 26px; padding: 16px 18px;
  background: var(--linen); border: var(--rule);
  font-family: var(--font-mono); font-size: .78rem; line-height: 1.75;
  color: var(--sage-gray); overflow-x: auto;
}
.formula b { color: var(--ink); font-weight: 500; }

/* ---------- schede specie: specimen sheets ---------- */

.sheets { display: grid; gap: clamp(34px, 4.5vw, 60px); }

.sheet {
  border: var(--rule); border-radius: 10px;
  background: var(--linen); overflow: hidden;
}

.sheet__grid { display: grid; }
@media (min-width: 880px) {
  .sheet__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .sheet--flip .sheet__plate { order: 2; }
  /* the portrait plate sits narrower: Bird Alone is the only vertical specimen */
  .sheet--portrait .sheet__grid { grid-template-columns: minmax(0, .62fr) minmax(0, 1fr); }
}

.sheet__plate {
  background: var(--eucalyptus);
  border-bottom: var(--rule);
  display: flex; align-items: center; justify-content: center;
  padding: 0;
}
@media (min-width: 880px) {
  .sheet__plate { border-bottom: 0; border-right: var(--rule); }
  .sheet--flip .sheet__plate { border-right: 0; border-left: var(--rule); }
}
.sheet__plate img { width: 100%; height: 100%; object-fit: cover; }
.sheet--portrait .sheet__plate { padding: clamp(18px, 2.4vw, 30px); }
.sheet--portrait .sheet__plate img { height: auto; border: var(--rule); }

.sheet__body { padding: clamp(20px, 2.6vw, 32px); }

.sheet__no {
  font-family: var(--font-mono); font-size: var(--t-tag);
  letter-spacing: .1em; color: var(--sage-mist);
}

.sheet__name {
  font-family: var(--font-serif); font-weight: 500;
  font-size: clamp(1.6rem, 1.2rem + 1.3vw, 2.15rem);
  line-height: 1.1; letter-spacing: -.02em;
  margin: 6px 0 4px;
}
.sheet__studio { color: var(--sage-gray); font-size: .9rem; margin-bottom: 16px; }

/* mono specimen tags: real metadata only (genre, platform) */
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.tags li {
  font-family: var(--font-mono); font-size: var(--t-tag);
  letter-spacing: .07em; text-transform: uppercase;
  padding: 4px 10px; border: var(--rule-ink); border-radius: 999px;
  color: var(--olive); background: transparent;
}
.tags li.is-sage { background: var(--eucalyptus); border-color: var(--eucalyptus); }
.tags { list-style: none; padding: 0; margin-left: 0; margin-right: 0; }

.score {
  display: flex; align-items: baseline; gap: 10px;
  padding: 12px 0; margin-bottom: 16px;
  border-block: var(--rule);
}
.score__val {
  font-family: var(--font-mono); font-size: 1.5rem; font-weight: 500;
  color: var(--sage); letter-spacing: -.02em;
}
.score__label {
  font-family: var(--font-mono); font-size: var(--t-tag);
  letter-spacing: .08em; text-transform: uppercase; color: var(--sage-gray);
}

/* taxonomy grid: the field-guide data block */
.taxa { margin: 0 0 18px; display: grid; gap: 0; border-top: var(--rule); }
.taxa div {
  display: grid; grid-template-columns: 9.5rem minmax(0, 1fr);
  gap: 12px; padding: 8px 0; border-bottom: var(--rule);
}
@media (max-width: 520px) {
  .taxa div { grid-template-columns: 1fr; gap: 2px; }
}
.taxa dt {
  font-family: var(--font-mono); font-size: var(--t-tag);
  letter-spacing: .07em; text-transform: uppercase; color: var(--sage-mist);
  padding-top: 3px;
}
.taxa dd { margin: 0; font-size: .92rem; }
.taxa dd em { font-family: var(--font-serif); font-style: italic; color: var(--sage-gray); }

.habitat h4, .sheet__body h4 {
  margin: 0 0 6px;
  font-family: var(--font-mono); font-size: var(--t-tag);
  font-weight: 400; letter-spacing: .09em; text-transform: uppercase;
  color: var(--sage-mist);
}
.habitat { margin-bottom: 16px; }
.habitat p, .observations p { font-size: .95rem; }
.observations { margin-bottom: 16px; }

.note-content {
  margin: 0 0 18px; padding: 14px 16px;
  border: 1px solid var(--lichen); border-radius: 6px;
  background: var(--bone); font-size: .92rem;
}
.note-content h4 { color: var(--crimson); margin-bottom: 6px; }

.flag {
  margin: 0 0 18px; padding: 12px 0 0;
  border-top: 1px dashed var(--lichen);
  font-size: .92rem; color: var(--sage-gray);
}
.flag b { color: var(--ink); font-weight: 600; }

.awards { font-size: .92rem; margin-bottom: 18px; }
.awards b { color: var(--olive); }

.sheet__actions { display: flex; flex-wrap: wrap; gap: 10px; }
.sheet__actions .btn { padding: 10px 18px; font-size: .82rem; }

/* ---------- tavola comparativa ---------- */

.table-scroll { overflow-x: auto; border: var(--rule); border-radius: 10px; background: var(--linen); }

table.tavola { width: 100%; border-collapse: collapse; min-width: 720px; font-size: .88rem; }
table.tavola caption { text-align: left; padding: 0 0 14px; color: var(--sage-gray); font-size: .9rem; }
table.tavola th, table.tavola td { padding: 12px 14px; text-align: left; border-bottom: var(--rule); vertical-align: top; }
table.tavola thead th {
  font-family: var(--font-mono); font-size: var(--t-tag); font-weight: 400;
  letter-spacing: .07em; text-transform: uppercase; color: var(--sage-mist);
  background: var(--bone); white-space: nowrap;
}
table.tavola tbody tr:last-child td { border-bottom: 0; }
table.tavola tbody th { font-weight: 500; font-family: var(--font-serif); font-size: 1.05rem; white-space: nowrap; }
table.tavola td.num { font-family: var(--font-mono); white-space: nowrap; }

/* our score: numeral + hairline ticks. No filled track bars. */
.oss { display: inline-flex; align-items: center; gap: 8px; }
.oss__n { font-family: var(--font-mono); font-weight: 500; color: var(--sage); }
.oss__ticks { display: inline-flex; gap: 2px; }
.oss__ticks i { width: 3px; height: 11px; background: var(--lichen); border-radius: .5px; }
.oss__ticks i.on { background: var(--sage); }

.tavola-foot { margin-top: 14px; font-size: .82rem; color: var(--sage-gray); }

/* ---------- esemplare notevole: full-bleed sage band ---------- */

.notable {
  background: var(--sage); color: var(--linen);
  padding-inline: var(--gutter); padding-block: clamp(46px, 6vw, 82px);
}
.notable__inner { display: grid; gap: clamp(20px, 3vw, 40px); }
@media (min-width: 900px) {
  .notable__inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); align-items: center; }
}
.notable .tag { color: var(--eucalyptus); }
.notable h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 1.3rem + 2.4vw, 3.1rem);
  line-height: 1.06; margin: 8px 0 0;
}
.notable p { color: color-mix(in srgb, var(--linen) 86%, var(--sage)); }
.notable__why { max-width: 54ch; }
.notable .btn--ink { background: var(--linen); color: var(--ink); }
.notable .btn--ink:hover { background: var(--bone); }
.notable .btn--ghost { border-color: color-mix(in srgb, var(--linen) 45%, transparent); color: var(--linen); }
.notable .btn--ghost:hover { border-color: var(--linen); background: color-mix(in srgb, var(--linen) 12%, transparent); }
.notable__actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

/* ---------- note di campo: dated entries, date hangs in the margin ---------- */

.notes { display: grid; gap: 0; border-top: var(--rule); }
.note { display: grid; gap: 6px 28px; padding: 22px 0; border-bottom: var(--rule); }
@media (min-width: 800px) {
  .note { grid-template-columns: 8.5rem minmax(0, 1fr); }
}
.note__date {
  font-family: var(--font-mono); font-size: var(--t-tag);
  letter-spacing: .07em; text-transform: uppercase; color: var(--sage-mist);
  padding-top: 5px;
}
.note__body h3 { margin-bottom: 6px; font-family: var(--font-serif); font-size: 1.28rem; }
.note__body p { font-size: .95rem; max-width: 68ch; }

/* ---------- faq ---------- */

.faq { border-top: var(--rule); }
.faq details { border-bottom: var(--rule); }
.faq summary {
  cursor: pointer; list-style: none;
  padding: 18px 40px 18px 0; position: relative;
  font-family: var(--font-serif); font-size: 1.16rem; font-weight: 500;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font-family: var(--font-mono); color: var(--sage); font-size: 1.1rem;
}
.faq details[open] summary::after { content: "-"; }
.faq summary:hover { color: var(--sage); }
.faq__a { padding: 0 0 20px; max-width: 68ch; color: var(--sage-gray); font-size: .95rem; }

/* ---------- forms ---------- */

.form { display: grid; gap: 18px; max-width: 34rem; }
.field { display: grid; gap: 6px; }
.field label { font-size: .86rem; font-weight: 500; }
.field input, .field textarea {
  font-family: inherit; font-size: 1rem; color: var(--ink);
  background: var(--linen); border: 1px solid var(--lichen); border-radius: 4px;
  padding: 11px 13px; width: 100%;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: var(--sage-gray); opacity: 1; }
.field input:focus, .field textarea:focus { border-color: var(--sage); outline: 2px solid var(--sage); outline-offset: 1px; }
.field__hint { font-size: .8rem; color: var(--sage-gray); }

.consent { display: flex; gap: 10px; align-items: flex-start; font-size: .86rem; color: var(--sage-gray); }
.consent input { margin-top: 3px; width: 16px; height: 16px; accent-color: var(--sage); flex: none; }

/* ---------- footer ---------- */

.foot {
  background: var(--slate); color: var(--eucalyptus);
  padding-inline: var(--gutter); padding-block: clamp(44px, 5vw, 68px) 26px;
  font-size: .88rem;
}
.foot a { color: var(--linen); text-decoration-color: color-mix(in srgb, var(--linen) 35%, transparent); }
.foot a:hover { text-decoration-color: var(--linen); }

.foot__top { display: grid; gap: clamp(26px, 3.4vw, 54px); }
@media (min-width: 780px) {
  .foot__top { grid-template-columns: minmax(0, 1.4fr) minmax(0, .8fr) minmax(0, .8fr); }
}
.foot__brand .wordmark { color: var(--linen); }
.foot__brand .wordmark svg { filter: invert(1) brightness(1.6); }
.foot__brand p { margin-top: 12px; max-width: 42ch; color: var(--sage-mist); }

.foot h2 {
  font-family: var(--font-mono); font-size: var(--t-tag); font-weight: 400;
  letter-spacing: .09em; text-transform: uppercase; color: var(--sage-mist);
  margin-bottom: 12px;
}
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }

.foot__trust {
  margin-top: clamp(30px, 3.4vw, 46px); padding-top: 20px;
  border-top: 1px solid color-mix(in srgb, var(--linen) 16%, transparent);
  font-family: var(--font-mono); font-size: var(--t-tag);
  letter-spacing: .08em; text-transform: uppercase; color: var(--linen);
}

.foot__legal {
  margin-top: 18px; padding-top: 18px;
  border-top: 1px solid color-mix(in srgb, var(--linen) 16%, transparent);
  font-size: .72rem; line-height: 1.62; color: var(--sage-mist); max-width: 90ch;
}
.foot__legal p + p { margin-top: 8px; }

/* ---------- long-form article pages ---------- */

.article { padding-inline: var(--gutter); padding-block: clamp(38px, 5vw, 70px); }
.article__head { max-width: 44rem; margin-bottom: clamp(26px, 3vw, 40px); }
.article__head h1 {
  font-family: var(--font-serif); font-weight: 500;
  font-size: clamp(2rem, 1.4rem + 2.6vw, 3.4rem);
  line-height: 1.05; letter-spacing: -.025em; margin: 10px 0 14px;
}
.prose { max-width: 40rem; }
.prose h2 { margin: clamp(30px, 3.4vw, 46px) 0 12px; font-size: var(--t-h3); }
.prose h2:first-child { margin-top: 0; }
.prose ul { padding-left: 1.1rem; margin: 0 0 1em; }
.prose li { margin-bottom: .4em; }
.prose figure { margin: 26px 0; }
.prose figure img { border: var(--rule); border-radius: 8px; width: 100%; }
.prose figcaption { margin-top: 8px; font-size: .8rem; color: var(--sage-gray); }
.prose__dl { border-top: var(--rule); margin: 22px 0; }
.prose__dl div {
  display: grid; grid-template-columns: 10rem minmax(0, 1fr); gap: 12px;
  padding: 9px 0; border-bottom: var(--rule);
}
@media (max-width: 520px) { .prose__dl div { grid-template-columns: 1fr; gap: 2px; } }
.prose__dl dt {
  font-family: var(--font-mono); font-size: var(--t-tag); letter-spacing: .07em;
  text-transform: uppercase; color: var(--sage-mist); padding-top: 3px;
}
.prose__dl dd { margin: 0; font-size: .92rem; }

/* ---------- 404 ---------- */

.lost {
  padding-inline: var(--gutter); padding-block: clamp(60px, 10vw, 130px);
  min-height: 52vh; display: grid; align-content: center;
}
.lost h1 {
  font-family: var(--font-serif); font-weight: 500;
  font-size: clamp(2.2rem, 1.4rem + 3.4vw, 4rem);
  line-height: 1.04; letter-spacing: -.03em; margin: 12px 0 16px;
}

/* ---------- reveal (motion is low: one short fade, disabled on request) ---------- */

@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(10px); }
  .reveal.is-in { opacity: 1; transform: none; transition: opacity .5s ease, transform .5s ease; }
}