/* Buttons */
.tf-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--tf-font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85em 1.4em;
  border: 1.5px solid var(--tf-ink);
  border-radius: var(--tf-radius);
  text-decoration: none;
  cursor: pointer;
  background: transparent;
  color: var(--tf-ink);
  transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}

.tf-btn--primary {
  background: var(--tf-ink);
  color: var(--tf-paper);
}

.tf-btn--primary:hover {
  background: var(--tf-accent);
  border-color: var(--tf-accent);
  color: var(--tf-accent-ink);
}

.tf-btn--ghost:hover {
  border-color: var(--tf-accent);
  color: var(--tf-accent);
}

/* Masthead */
.tf-masthead {
  border-bottom: 3px double var(--tf-ink);
}

.tf-masthead__top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--tf-space-3);
  padding-block: var(--tf-space-3);
}

.tf-masthead__mark {
  text-decoration: none;
  color: var(--tf-ink);
  display: block;
}

.tf-masthead__name {
  display: block;
  font-family: var(--tf-font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 1.3rem + 1.4vw, 2.4rem);
  letter-spacing: 0.03em;
}

.tf-masthead__tagline {
  display: block;
  font-family: var(--tf-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tf-gray-500);
  border-top: 1px solid var(--tf-accent);
  padding-top: 0.35em;
  margin-top: 0.35em;
}

.tf-nav {
  border-top: 1px solid var(--tf-gray-300);
  background: var(--tf-paper-soft);
}

.tf-nav__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--tf-space-2) var(--tf-space-3);
  padding-block: var(--tf-space-1);
}

.tf-nav__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--tf-space-1) var(--tf-space-3);
  margin: 0;
  padding: 0;
  font-size: 0.92rem;
  font-weight: 500;
}

.tf-nav__list a {
  text-decoration: none;
  padding-block: 0.6em;
  display: inline-block;
  border-bottom: 2px solid transparent;
}

.tf-nav__list a:hover,
.tf-nav__list a[aria-current="page"] {
  border-bottom-color: var(--tf-accent);
  color: var(--tf-accent);
}

.tf-nav__cta {
  padding: 0.55em 1.1em;
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* Hero */
.tf-hero {
  display: grid;
  gap: var(--tf-space-5);
  align-items: center;
  padding-block: var(--tf-space-6);
}

@media (min-width: 900px) {
  .tf-hero {
    grid-template-columns: 1.05fr 1fr;
  }
}

.tf-hero h1 {
  margin-top: var(--tf-space-2);
}

.tf-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--tf-space-2);
  margin-top: var(--tf-space-3);
}

.tf-figure {
  margin: 0;
  border: var(--tf-rule);
  padding: var(--tf-space-1);
  background: var(--tf-paper);
}

.tf-figure img {
  width: 100%;
  height: auto;
}

.tf-figure figcaption {
  font-family: var(--tf-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--tf-gray-500);
  padding: 0.6em 0.3em 0.2em;
}

/* Manifesto */
.tf-manifesto {
  display: grid;
  gap: var(--tf-space-4);
}

@media (min-width: 900px) {
  .tf-manifesto {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
  }
}

.tf-manifesto blockquote {
  font-size: 1.3rem;
  margin: var(--tf-space-2) 0;
}

/* Cards / numbered articles */
.tf-card {
  border-top: 2px solid var(--tf-ink);
  padding-top: var(--tf-space-2);
}

.tf-card__num {
  font-family: var(--tf-font-mono);
  color: var(--tf-accent);
  font-size: 0.8rem;
}

.tf-card ul {
  margin-top: var(--tf-space-1);
}

/* Stages (How We Work) */
.tf-stages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--tf-space-4);
}

.tf-stage {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--tf-space-3);
  padding-bottom: var(--tf-space-4);
  border-bottom: var(--tf-rule);
}

.tf-stage:last-child {
  border-bottom: none;
}

.tf-stage__num {
  font-family: var(--tf-font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--tf-gray-300);
  line-height: 1;
}

.tf-stage__icon-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4em;
}

.tf-stage__icon {
  width: 64px;
  height: 64px;
}

.tf-stages--compact .tf-stage {
  grid-template-columns: auto 1fr;
  gap: var(--tf-space-2);
  padding-bottom: var(--tf-space-3);
}

.tf-stages--compact .tf-stage__num {
  font-size: 1.5rem;
}

.tf-stages--compact .tf-stage__icon {
  width: 40px;
  height: 40px;
}

/* Why-us grid */
.tf-reason h3 {
  font-size: 1.1rem;
  font-family: var(--tf-font-body);
  font-weight: 700;
}

/* Classifieds ("What You Can Bring Us") */
.tf-classifieds {
  display: grid;
  gap: var(--tf-space-3);
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}

.tf-classified {
  border: var(--tf-rule);
  padding: var(--tf-space-3);
  background: var(--tf-paper-soft);
}

.tf-classified p {
  font-family: var(--tf-font-display);
  font-style: italic;
  font-size: 1.05rem;
  margin: 0;
}

.tf-classifieds__closer {
  text-align: center;
  margin-top: var(--tf-space-4);
  font-family: var(--tf-font-display);
  font-size: 1.3rem;
  font-weight: 700;
}

/* Case studies */
.tf-case {
  padding-block: var(--tf-space-5);
  border-bottom: var(--tf-rule);
}

.tf-case:last-of-type {
  border-bottom: none;
}

.tf-case__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--tf-space-2);
  flex-wrap: wrap;
  margin-bottom: var(--tf-space-3);
}

.tf-case__tag {
  font-family: var(--tf-font-mono);
  font-size: 0.75rem;
  color: var(--tf-accent);
  white-space: nowrap;
}

.tf-case__body {
  display: grid;
  gap: var(--tf-space-3);
}

@media (min-width: 900px) {
  .tf-case__body {
    grid-template-columns: repeat(2, 1fr);
  }
}

.tf-case__section h4 {
  font-family: var(--tf-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tf-gray-500);
  font-weight: 500;
  margin-bottom: 0.4em;
}

.tf-scope {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  padding: 0;
  margin: 0.5em 0 0;
}

.tf-scope li {
  font-family: var(--tf-font-mono);
  font-size: 0.72rem;
  border: 1px solid var(--tf-gray-300);
  border-radius: 999px;
  padding: 0.3em 0.8em;
  color: var(--tf-gray-700);
}

/* Contact form */
.tf-form {
  display: grid;
  gap: var(--tf-space-3);
  max-width: 38rem;
}

.tf-field {
  display: grid;
  gap: 0.4em;
}

.tf-field label {
  font-weight: 600;
  font-size: 0.95rem;
}

.tf-field input,
.tf-field textarea {
  font: inherit;
  padding: 0.75em 0.9em;
  border: 1.5px solid var(--tf-gray-300);
  border-radius: var(--tf-radius);
  background: var(--tf-paper);
  color: var(--tf-ink);
}

.tf-field input:focus,
.tf-field textarea:focus {
  border-color: var(--tf-accent);
}

.tf-field--optional label::after {
  content: " (optional)";
  font-weight: 400;
  color: var(--tf-gray-500);
}

.tf-form__honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.tf-form__status {
  font-weight: 600;
  padding: 0.8em 1em;
  border: var(--tf-rule);
  display: none;
}

.tf-form__status[data-state="ok"] {
  display: block;
  border-color: var(--tf-ink);
}

.tf-form__status[data-state="error"] {
  display: block;
  border-color: var(--tf-accent);
  color: var(--tf-accent);
}

.tf-fallback {
  font-size: 0.9rem;
  color: var(--tf-gray-700);
}

/* Footer */
.tf-footer {
  border-top: 3px double var(--tf-ink);
  padding-block: var(--tf-space-4);
  background: var(--tf-paper-soft);
}

.tf-footer__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--tf-space-3);
}

.tf-footer__name {
  font-family: var(--tf-font-display);
  font-weight: 700;
  font-size: 1.3rem;
}

.tf-footer__tagline {
  font-family: var(--tf-font-mono);
  font-size: 0.75rem;
  color: var(--tf-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tf-footer__links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--tf-space-1) var(--tf-space-3);
  padding: 0;
  margin: 0;
  font-size: 0.9rem;
}

.tf-footer__links a {
  text-decoration: none;
}

.tf-footer__closer {
  margin-top: var(--tf-space-4);
  padding-top: var(--tf-space-3);
  border-top: var(--tf-rule);
  font-family: var(--tf-font-display);
  font-style: italic;
  font-size: 1.1rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--tf-space-2);
  align-items: baseline;
}

.tf-footer__copyright {
  font-family: var(--tf-font-mono);
  font-size: 0.7rem;
  color: var(--tf-gray-500);
  font-style: normal;
}

/* Extras (apps / open source) */
.tf-app-card {
  display: flex;
  flex-direction: column;
  gap: 0.5em;
}

.tf-app-card__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--tf-radius);
  border: var(--tf-rule);
}

.tf-app-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--tf-space-2);
  margin-top: auto;
  padding-top: 0.5em;
}

.tf-app-card__meta .tf-btn {
  padding: 0.5em 1em;
  font-size: 0.85rem;
}

/* Reveal-on-scroll (progressive; no-op without JS since .tf-reveal has no base opacity change) */
.tf-reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.tf-reveal.is-visible,
.no-js .tf-reveal {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .tf-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}