/* ==========================================================================
   Frank Tetteh — portfolio
   One stylesheet, no framework.

   The palette is sampled from the portrait: the suit reads as a violet-cast
   charcoal (#1C1B20–#2B282E) and the skin as a warm copper (#BD785F–#C3826C).
   Those two temperatures are the whole system — cool violet-grey neutrals,
   a copper accent. Green is kept for one job only: the availability dot.
   Type: Archivo (display) / Newsreader (body) / IBM Plex Mono (data + labels).
   Layout: a narrow mono meta rail against a wide content column, hairline
   separated, square edged.
   ========================================================================== */

/* --- Tokens: light is the base set ------------------------------------- */
:root {
  color-scheme: light;

  --paper: #fafafb;
  --sunken: #f1f0f4;
  --raised: #ffffff;
  --deep: #1c1b20;
  --on-deep-muted: #a5a0ae;
  --on-deep-hover: #ffffff;
  --scrim: rgba(255, 255, 255, 0.09);

  --ink: #17161b;
  --ink-muted: #56525c;
  --ink-faint: #6e6a77;
  --on-deep: #f1f0f4;

  --rule: #e3e1e8;
  --rule-strong: #c8c4ce;

  --accent: #9a5433;
  --accent-hover: #7e4228;
  --accent-wash: #f4eae4;
  --on-accent: #ffffff;

  --clay: #7c6a86;
  --danger: #a8302a;
  --live: #3e9d6b;

  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Newsreader", Georgia, "Times New Roman", serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --shell: 1180px;
  --gutter: 24px;
  --rail: 168px;
  --nav-h: 66px;
  --radius: 2px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;

    --paper: #121116;
    --sunken: #17161c;
    --raised: #1b1a21;
    --deep: #24222b;
    --on-deep-muted: #a5a0ae;
    --on-deep-hover: #ffffff;
    --scrim: rgba(255, 255, 255, 0.1);

    --ink: #eceaf0;
    --ink-muted: #9e99a8;
    --ink-faint: #8b8697;
    --on-deep: #eceaf0;

    --rule: #29272f;
    --rule-strong: #3c3946;

    --accent: #d98f63;
    --accent-hover: #e8a87f;
    --accent-wash: #2a1f19;
    --on-accent: #17120e;

    --clay: #a596b0;
    --danger: #ef9b93;
    --live: #5cbe8a;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;

  --paper: #121116;
  --sunken: #17161c;
  --raised: #1b1a21;
  --deep: #24222b;
  --on-deep-muted: #a5a0ae;
  --on-deep-hover: #ffffff;
  --scrim: rgba(255, 255, 255, 0.1);

  --ink: #eceaf0;
  --ink-muted: #9e99a8;
  --ink-faint: #8b8697;
  --on-deep: #eceaf0;

  --rule: #29272f;
  --rule-strong: #3c3946;

  --accent: #d98f63;
  --accent-hover: #e8a87f;
  --accent-wash: #2a1f19;
  --on-accent: #17120e;

  --clay: #a596b0;
  --danger: #ef9b93;
  --live: #5cbe8a;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-optical-sizing: auto;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }
p { margin: 0; }

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

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

::selection { background: var(--accent); color: var(--on-accent); }

/* --- Shell -------------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(52px, 8vw, 92px); }
.section--sunken { background: var(--sunken); }
.section--tight { padding-block: clamp(36px, 5vw, 60px); }

.skip-link {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--accent);
  color: var(--on-accent);
  font-family: var(--font-mono);
  font-size: 13px;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 16px; }

/* --- Labels and headings ------------------------------------------------ */
.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-head {
  display: grid;
  gap: 12px;
  max-width: 60ch;
  margin-bottom: clamp(28px, 4vw, 44px);
}
.section-head h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
.section-head p { color: var(--ink-muted); }

.lede {
  color: var(--ink-muted);
  font-size: clamp(1.0625rem, 1.6vw, 1.1875rem);
  max-width: 62ch;
}
.mono { font-family: var(--font-mono); }

/* --- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: none;
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}
.btn svg { width: 15px; height: 15px; }

.btn--primary { background: var(--accent); color: var(--on-accent); }
.btn--primary:hover { background: var(--accent-hover); }

.btn--ghost { border-color: var(--rule-strong); color: var(--ink); }
.btn--ghost:hover { border-color: var(--ink); background: var(--raised); }

.btn--onDeep { border: 1px solid currentColor; color: inherit; }
.btn--onDeep:hover { background: var(--scrim); }

.btn--block { width: 100%; }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* --- Navigation --------------------------------------------------------- */
.nav {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  background: var(--paper);
  transition: border-color 0.2s ease;
}
.nav[data-scrolled="true"] { border-bottom-color: var(--rule); }

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
}

.brand {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand span { color: var(--accent); }

.nav__links { display: flex; align-items: center; gap: 22px; }
.nav__links a {
  position: relative;
  padding-block: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-muted);
  transition: color 0.18s ease;
}
.nav__links a:hover { color: var(--ink); }
.nav__links a[aria-current="page"] { color: var(--ink); }
.nav__links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: -2px;
  height: 1px;
  background: var(--accent);
}

.nav__actions { display: flex; align-items: center; gap: 10px; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: none;
  cursor: pointer;
  transition: border-color 0.18s ease;
}
.icon-btn:hover { border-color: var(--rule-strong); }
.icon-btn svg { width: 17px; height: 17px; }

.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: block; }
}

.nav__toggle { display: none; }

/* Mobile drawer */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 110;
  display: none;
  padding-block: 20px calc(24px + env(safe-area-inset-bottom, 0px));
  background: var(--paper);
  flex-direction: column;
}
.drawer[data-open="true"] { display: flex; }
.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: calc(var(--nav-h) - 20px);
  margin-bottom: 20px;
}
.drawer nav { display: flex; flex-direction: column; }
.drawer nav a {
  padding-block: 18px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.drawer nav a[aria-current="page"] { color: var(--accent); }
.drawer .btn { margin-top: 28px; }

/* --- Hero --------------------------------------------------------------- */
.hero { padding-block: clamp(44px, 7vw, 84px) clamp(36px, 5vw, 64px); }

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}

.hero h1 {
  margin-block: 20px 22px;
  font-size: clamp(2.5rem, 6.2vw, 4.1rem);
  letter-spacing: -0.035em;
}
.hero__role {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--ink-muted);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.status__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--live);
}

/* The portrait is a transparent cutout, not a rectangular photograph, so it
   stands on the page rather than sitting inside a frame. A hairline under it
   gives it a ground line instead of a border. */
.portrait {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--rule);
}
.portrait img {
  width: 100%;
  max-width: 400px;
  height: auto;
  object-fit: contain;
}

/* --- Stat rail ---------------------------------------------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0;
  border-top: 1px solid var(--rule);
}
.stats > div {
  padding: 22px 22px 22px 0;
  border-bottom: 1px solid var(--rule);
}
.stats dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.stats dd {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

/* --- Capability list ---------------------------------------------------- */
.caps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 0 clamp(28px, 4vw, 56px);
  border-top: 1px solid var(--rule);
}
.cap {
  display: grid;
  gap: 10px;
  padding-block: 26px;
  border-bottom: 1px solid var(--rule);
}
.cap h3 { font-size: 1.125rem; }
.cap p { color: var(--ink-muted); font-size: 0.9375rem; line-height: 1.65; }
.cap__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--accent);
}

/* --- Records: projects and roles share one rail grid -------------------- */
.records { border-top: 1px solid var(--rule); }

.record {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: clamp(16px, 3vw, 44px);
  padding-block: clamp(26px, 3.5vw, 38px);
  border-bottom: 1px solid var(--rule);
}

.record__rail {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}
.record__rail b {
  display: block;
  font-weight: 500;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}

.record__body { display: grid; gap: 14px; }
.record__body h3 { font-size: clamp(1.25rem, 2.4vw, 1.6rem); }
.record__org {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}
.record__body > p { color: var(--ink-muted); max-width: 68ch; }

.points { display: grid; gap: 10px; }
.points li {
  position: relative;
  padding-left: 22px;
  color: var(--ink-muted);
  font-size: 0.9688rem;
  line-height: 1.65;
  max-width: 70ch;
}
.points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 11px;
  height: 1px;
  background: var(--rule-strong);
}
.points b { color: var(--ink); font-weight: 600; font-family: var(--font-display); font-size: 0.875rem; letter-spacing: 0.01em; }
.points code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding: 1px 5px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--sunken);
  color: var(--ink);
}

/* Status flag on a record rail */
.flag {
  align-self: flex-start;
  padding: 2px 8px;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.flag--live { color: var(--accent); }
.flag--wip { color: var(--clay); }

/* --- Tags --------------------------------------------------------------- */
.tags { display: flex; flex-wrap: wrap; gap: 6px 14px; }
.tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-faint);
  white-space: nowrap;
}
.tag::before { content: "/ "; color: var(--rule-strong); }

/* --- Work cards (teasers) ----------------------------------------------- */
.teasers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0 clamp(28px, 4vw, 52px);
  border-top: 1px solid var(--rule);
}
.teaser {
  display: grid;
  gap: 12px;
  align-content: start;
  padding-block: 28px;
  border-bottom: 1px solid var(--rule);
}
.teaser h3 { font-size: 1.3rem; }
.teaser p { color: var(--ink-muted); font-size: 0.9375rem; line-height: 1.65; }
.teaser__more {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent);
}
.teaser__more:hover { color: var(--accent-hover); }
.teaser__more svg { width: 14px; height: 14px; }

/* --- Skill blocks ------------------------------------------------------- */
.skills {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 0 clamp(28px, 4vw, 56px);
  border-top: 1px solid var(--rule);
}
.skill {
  display: grid;
  gap: 10px;
  align-content: start;
  padding-block: 24px;
  border-bottom: 1px solid var(--rule);
}
.skill h3 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.skill p { color: var(--ink-muted); font-size: 0.9375rem; }

/* --- Fact list ---------------------------------------------------------- */
.facts { border-top: 1px solid var(--rule); }
.facts > div {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  justify-content: space-between;
  padding-block: 13px;
  border-bottom: 1px solid var(--rule);
}
.facts dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 4px;
}
.facts dd {
  margin: 0;
  font-size: 0.9688rem;
  text-align: right;
}
.facts a { border-bottom: 1px solid var(--rule-strong); }
.facts a:hover { color: var(--accent); border-color: var(--accent); }

/* --- Contact ------------------------------------------------------------ */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.panel {
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--raised);
}
.panel h2 { font-size: 1.375rem; margin-bottom: 18px; }

.channels { border-top: 1px solid var(--rule); }
.channel {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-block: 15px;
  border-bottom: 1px solid var(--rule);
  transition: color 0.18s ease;
}
a.channel:hover { color: var(--accent); }
.channel__label {
  flex: none;
  width: 92px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.channel__value {
  font-size: 0.9688rem;
  overflow-wrap: anywhere;
}
.channel__note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-faint);
}

/* --- Form --------------------------------------------------------------- */
.form { display: grid; gap: 16px; }
.field { display: grid; gap: 6px; }
.field label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.field input,
.field textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  transition: border-color 0.18s ease;
}
.field textarea { resize: vertical; min-height: 138px; }
.field input:focus,
.field textarea:focus { outline: none; border-color: var(--accent); }
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] { border-color: var(--danger); }
.field__error {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--danger);
}

.form__status {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-muted);
  min-height: 18px;
}
.form__status[data-tone="ok"] { color: var(--accent); }
.form__status[data-tone="bad"] { color: var(--danger); }

/* --- Closing block ------------------------------------------------------ */
.callout {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(28px, 4vw, 48px);
  background: var(--deep);
  color: var(--on-deep);
}
.callout h2 { font-size: clamp(1.6rem, 3.2vw, 2.25rem); }
.callout p { margin-top: 12px; max-width: 46ch; color: var(--on-deep-muted); }
.callout .btn--primary { background: var(--on-deep); color: var(--deep); }
.callout .btn--primary:hover { background: var(--on-deep-hover); }

/* --- FAQ ---------------------------------------------------------------- */
.faq { border-top: 1px solid var(--rule); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding-block: 17px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ink-faint);
}
.faq details[open] summary::after { content: "–"; }
.faq details p {
  padding-bottom: 20px;
  max-width: 70ch;
  color: var(--ink-muted);
  font-size: 0.9688rem;
}

/* --- Footer ------------------------------------------------------------- */
.footer {
  padding-block: clamp(40px, 5vw, 56px) calc(28px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--rule);
}
.footer__top {
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
  justify-content: space-between;
}
.footer__blurb {
  max-width: 34ch;
  margin-top: 10px;
  color: var(--ink-muted);
  font-size: 0.9375rem;
}
.footer__cols { display: flex; flex-wrap: wrap; gap: 44px; }
.footer__col h4 {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.footer__col a {
  display: block;
  padding-block: 3px;
  font-size: 0.9375rem;
  color: var(--ink-muted);
}
.footer__col a:hover { color: var(--accent); }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-faint);
}

/* --- Hero entrance: resting state is visible ---------------------------- */
@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}
.rise { animation: rise 0.5s cubic-bezier(0.22, 1, 0.36, 1) backwards; }
.rise:nth-of-type(2) { animation-delay: 0.07s; }

/* --- Responsive --------------------------------------------------------- */
@media (max-width: 920px) {
  .hero__grid { grid-template-columns: 1fr; }
  .portrait { max-width: 340px; }
  .contact-grid { grid-template-columns: 1fr; }
  .record { grid-template-columns: 1fr; gap: 12px; }
  .record__rail { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 6px 16px; }
}

@media (max-width: 720px) {
  :root { --gutter: 16px; }
  body { font-size: 16.5px; }
  .nav__links,
  .nav__cta { display: none; }
  .nav__toggle { display: inline-flex; }
  .callout { flex-direction: column; align-items: flex-start; }
  .facts > div { justify-content: flex-start; }
  .facts dd { text-align: left; }
  .stats > div { padding-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

.schema-markup { display: none; }