/* ==========================================================================
   components.css — the layer stack, spec blocks, tiers, roles, controls.
   ========================================================================== */

/* ==========================================================================
   THE EVIDENCE TABLE — the signature element.
   One row per thing built, ordered from the most recent professional work down
   to the university foundations. The "backed by" column is a constraint, not
   decoration: a row cannot exist here without an artifact someone can open.
   ========================================================================== */

/* Genuinely tabular — a header row and one row per item — so it is a table.
   Two columns: the description (which is the row header) and the evidence. */
.layers {
  width: 100%;
  margin-top: var(--space-7);
  border-collapse: collapse;
  border-top: 1px solid var(--rule-strong);
  text-align: start;
}

.layers th,
.layers td {
  padding: var(--space-4) var(--space-3);
  border-bottom: 1px solid var(--rule);
  text-align: start;
  vertical-align: baseline;
}

.layers thead th {
  padding-block: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--step-mono-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.layers tbody tr {
  transition: background var(--fast) var(--ease),
    box-shadow var(--fast) var(--ease);
}

.layers tbody tr:hover,
.layers tbody tr:focus-within {
  background: var(--paper-sunk);
  box-shadow: inset 2px 0 0 var(--signal);
}

/* The description carries the row, so it is the row header. Normal weight:
   it is a sentence, not a label. */
.layer__what {
  font-weight: 400;
  font-size: var(--step-small);
  line-height: 1.55;
  color: var(--ink);
}

.layer__proof {
  width: 1%;
  font-family: var(--font-mono);
  font-size: var(--step-mono-sm);
  letter-spacing: 0.04em;
  white-space: nowrap;
  color: var(--ink-faint);
}

.layer__proof a {
  color: var(--signal);
  text-decoration: none;
}

.layers tbody tr:hover .layer__proof a {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

/* The one orchestrated moment on the page: rows arrive from the bottom up, so
   the delays run against document order. Assumes seven rows — extend the list
   if you add one. */
@media (prefers-reduced-motion: no-preference) {
  .layers tbody tr {
    opacity: 0;
    animation: layer-in 420ms var(--ease) both;
  }

  .layers tbody tr:nth-child(1) { animation-delay: 420ms; }
  .layers tbody tr:nth-child(2) { animation-delay: 350ms; }
  .layers tbody tr:nth-child(3) { animation-delay: 280ms; }
  .layers tbody tr:nth-child(4) { animation-delay: 210ms; }
  .layers tbody tr:nth-child(5) { animation-delay: 140ms; }
  .layers tbody tr:nth-child(6) { animation-delay: 70ms; }
  .layers tbody tr:nth-child(7) { animation-delay: 0ms; }
}

@keyframes layer-in {
  from {
    opacity: 0;
    transform: translateY(7px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* Below 720px the two columns stop fitting side by side, so each row becomes a
   block with the evidence link beneath the description. */
@media (max-width: 720px) {
  .layers,
  .layers tbody,
  .layers tbody tr,
  .layers tbody th,
  .layers tbody td {
    display: block;
    width: auto;
  }

  .layers thead {
    display: none;
  }

  .layers tbody tr {
    padding-block: var(--space-4);
    border-bottom: 1px solid var(--rule);
  }

  .layers tbody th,
  .layers tbody td {
    padding: 0 var(--space-3);
    border-bottom: 0;
  }

  .layer__proof {
    margin-top: var(--space-2);
  }
}

/* ==========================================================================
   SPEC BLOCK — how each project is presented: a titled block with a mono
   parameter table, the way a component datasheet lists its characteristics.
   ========================================================================== */

.spec {
  padding-top: var(--space-5);
  border-top: 1px solid var(--rule);
}

.spec:first-child {
  padding-top: 0;
  border-top: 0;
}

.spec__head {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.spec__title {
  margin: 0;
}

.spec__meta {
  margin: 0 0 var(--space-4);
  border-top: 1px solid var(--rule);
}

.spec__meta > div {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: var(--space-4);
  padding-block: var(--space-2);
  border-bottom: 1px solid var(--rule);
}

.spec__meta dt {
  font-family: var(--font-mono);
  font-size: var(--step-mono-sm);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.spec__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  line-height: 1.6;
  color: var(--ink-soft);
}

.spec__body {
  font-size: var(--step-small);
}

.spec__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

@media (max-width: 520px) {
  .spec__meta > div {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-1);
  }
}

/* ==========================================================================
   ROLE — an entry in the work history.
   ========================================================================== */

.role {
  padding-top: var(--space-5);
  border-top: 1px solid var(--rule);
}

.role:first-child {
  padding-top: 0;
  border-top: 0;
}

.role__head {
  margin-bottom: var(--space-3);
}

.role__org {
  display: block;
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.role__body {
  font-size: var(--step-small);
}

/* ==========================================================================
   TIER — the skills inventory. Grouped by what actually backs the claim,
   because a percentage backs nothing.
   ========================================================================== */

.tier {
  padding-top: var(--space-4);
  border-top: 1px solid var(--rule);
}

.tier:first-child {
  padding-top: 0;
  border-top: 0;
}

.tier__label {
  margin-bottom: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
}

.tier__items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tier__items li {
  padding: 0.28rem 0.55rem;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: var(--step-mono-sm);
  line-height: 1.4;
  color: var(--ink-soft);
}

.tier--open .tier__label {
  color: var(--signal);
}

.tier--open .tier__items li {
  border-style: dashed;
}

/* ==========================================================================
   NOTES, TAGS, CONTROLS
   ========================================================================== */

.note {
  padding-inline-start: var(--space-4);
  border-inline-start: 2px solid var(--signal);
  font-size: var(--step-small);
  color: var(--ink-soft);
}

.tag {
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: var(--step-mono-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  white-space: nowrap;
}

.tag--signal {
  border-color: var(--signal);
  color: var(--signal);
}

.link-mono {
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  letter-spacing: 0.03em;
}

/* Language switch in the masthead. Its label is always written in the language
   it switches TO, in that language's own script — a reader looking for Arabic
   scans for Arabic, not for the word "Arabic". */
.lang-link {
  font-family: var(--font-mono);
  font-size: var(--step-mono-sm);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
  padding-block: var(--space-1);
  border-bottom: 1px solid transparent;
}

.lang-link:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* Mode switch: plain version <-> technical version. Bordered rather than
   underlined so it outranks the language link, since it is the one control that
   decides whether a reader stays on the page at all. */
.mode-link {
  padding: 0.26rem 0.5rem;
  border: 1px solid var(--signal);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: var(--step-mono-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--signal);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--fast) var(--ease), color var(--fast) var(--ease);
}

.mode-link:hover {
  background: var(--signal);
  color: var(--paper);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  background: transparent;
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  letter-spacing: 0.04em;
  color: var(--ink);
  text-decoration: none;
  transition: border-color var(--fast) var(--ease),
    background var(--fast) var(--ease), color var(--fast) var(--ease);
}

.btn:hover {
  border-color: var(--signal);
  background: var(--signal-wash);
  color: var(--signal);
}

.btn--solid {
  border-color: var(--signal);
  background: var(--signal);
  color: var(--paper);
}

.btn--solid:hover {
  border-color: var(--signal-hover);
  background: var(--signal-hover);
  color: var(--paper);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  flex: none;
  padding: 0;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  background: transparent;
  font-family: var(--font-mono);
  font-size: var(--step-mono-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  transition: border-color var(--fast) var(--ease), color var(--fast) var(--ease);
}

.icon-btn:hover {
  border-color: var(--signal);
  color: var(--signal);
}

/* ==========================================================================
   CONTACT
   ========================================================================== */

.contact-list {
  border-top: 1px solid var(--rule);
}

.contact-list > div {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: var(--space-4);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}

.contact-list dt {
  font-family: var(--font-mono);
  font-size: var(--step-mono-sm);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.contact-list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  color: var(--ink-soft);
}

.contact-list dd a {
  overflow-wrap: anywhere;
}

/* ==========================================================================
   CASE-STUDY PAGE
   ========================================================================== */

.figure {
  margin: var(--space-6) 0;
  padding: var(--space-5);
  background: var(--paper-sunk);
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow-x: auto;
}

.figure__cap {
  margin-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--step-mono-sm);
  line-height: 1.6;
  color: var(--ink-faint);
}

/* Diagram strokes and labels follow the theme rather than being hardcoded.
   The min-width keeps it legible; .figure scrolls it on narrow screens. */
.diagram {
  min-width: 700px;
}

.diagram .box {
  fill: var(--paper-raised);
  stroke: var(--rule-strong);
  stroke-width: 1;
}

.diagram .box--key {
  stroke: var(--signal);
}

.diagram .edge {
  fill: none;
  stroke: var(--rule-strong);
  stroke-width: 1;
}

.diagram .entity {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  fill: var(--ink);
}

.diagram .field {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: var(--ink-soft);
}

.diagram .card {
  font-family: var(--font-mono);
  font-size: 9.5px;
  fill: var(--ink-faint);
}

/* ==========================================================================
   UI SKETCH — the internal app's information architecture, redrawn in this
   site's own visual language. Explicitly not a screenshot: the data is
   invented, and the caption says so.
   ========================================================================== */

.ui {
  min-width: 560px;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  background: var(--paper-raised);
  font-family: var(--font-mono);
  font-size: var(--step-mono-sm);
  line-height: 1.5;
  overflow: hidden;
}

.ui__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0.45rem 0.7rem;
  border-bottom: 1px solid var(--rule);
  background: var(--paper-sunk);
  font-weight: 600;
  color: var(--ink);
}

.ui__bar span:last-child {
  font-weight: 400;
  color: var(--ink-faint);
}

.ui__body {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr);
}

.ui__side {
  padding: 0.5rem 0;
  border-inline-end: 1px solid var(--rule);
  background: var(--paper-sunk);
}

.ui__side i {
  display: block;
  padding: 0.28rem 0.7rem;
  font-style: normal;
  color: var(--ink-soft);
}

.ui__side i[data-on] {
  background: var(--signal-wash);
  box-shadow: inset 2px 0 0 var(--signal);
  color: var(--signal);
  font-weight: 600;
}

.ui__main {
  padding: 0.7rem;
}

.ui__row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: 0.5rem;
}

.ui__search {
  flex: 1;
  padding: 0.22rem 0.4rem;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  color: var(--ink-faint);
}

.ui__row--split {
  justify-content: space-between;
}

.ui__row strong {
  font-size: var(--step-mono);
  color: var(--ink);
}

.ui__chip {
  padding: 0.18rem 0.4rem;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  color: var(--ink-soft);
  white-space: nowrap;
}

.ui__chip[data-on] {
  border-color: var(--signal);
  background: var(--signal-wash);
  color: var(--signal);
  font-weight: 600;
}

.ui table {
  width: 100%;
  border-collapse: collapse;
}

.ui th,
.ui td {
  padding: 0.3rem 0.4rem;
  border-bottom: 1px solid var(--rule);
  text-align: start;
  white-space: nowrap;
}

.ui th {
  color: var(--ink-faint);
  font-weight: 600;
}

.ui td {
  color: var(--ink-soft);
}

.ui tbody tr:last-child td {
  border-bottom: 0;
}

/* A visible, unmissable block for content only Mojtaba can write. Remove each
   one as you fill it in. Nothing here should survive to a published page. */
.todo {
  margin: var(--space-5) 0;
  padding: var(--space-4);
  border: 1px dashed #b4552d;
  border-radius: 2px;
  background: rgba(180, 85, 45, 0.06);
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  line-height: 1.65;
  color: var(--ink);
}

.todo b {
  display: block;
  margin-bottom: var(--space-2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #b4552d;
}

/* Emphasis inside a TODO's body text, rather than another heading. */
.todo b.inl {
  display: inline;
  margin: 0;
  letter-spacing: inherit;
  text-transform: none;
  color: inherit;
}

html[data-theme="dark"] .todo {
  border-color: #d98a63;
  background: rgba(217, 138, 99, 0.08);
}

html[data-theme="dark"] .todo b {
  color: #d98a63;
}

.prose h3 {
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.prose ul.bullets {
  margin: 0 0 var(--space-4);
  padding-inline-start: var(--space-5);
  list-style: disc;
}

.prose ul.bullets li {
  margin-bottom: var(--space-2);
}