/* ==========================================================================
   COMPONENTS.CSS — reusable UI pieces shared across pages
   ========================================================================== */

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85em 1.5em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease);
}
.btn:active {
  transform: translateY(1px);
}
.btn--primary {
  background: var(--color-teal);
  color: var(--color-white);
}
.btn--primary:hover {
  background: var(--color-teal-dark);
  color: var(--color-white);
}
.btn--ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-line);
}
.btn--ghost:hover {
  border-color: var(--color-ink);
  color: var(--color-ink);
}
.section--dark .btn--ghost {
  color: var(--color-white);
  border-color: rgba(255,255,255,0.3);
}
.section--dark .btn--ghost:hover {
  border-color: var(--color-white);
}


/* Additional Section */
.scroll-cue {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.scroll-cue:hover {
  color: var(--color-teal);
}
.scroll-cue__arrow {
  display: inline-block;
  animation: scrollCueBounce 1.6s ease-in-out infinite;
}
@keyframes scrollCueBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}


/* ==========================================================================
   SITE HEADER / NAV
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 248, 250, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.1rem;
}
/* ---- Brand ---- */
.nav__brand {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  font-family: var(--font-display);
  font-size: 1.725rem;
  color: var(--color-ink);
}
.nav__brand:hover {
  color: var(--color-ink);
}
.nav__brand-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.nav__brand-name {
  font-weight: 700;
  line-height: 1.1;
}
.nav__brand-tagline {
  margin-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.975rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--color-slate);
  line-height: 1.2;
}
/* ---- Brand mark ---- */
.nav__brand-mark {
  width: 1.6em;
  height: 1.6em;
  border-radius: 4px;
  background: var(--color-ink);
  position: relative;
  flex-shrink: 0;
}
.nav__brand-mark::before,
.nav__brand-mark::after {
  content: "";
  position: absolute;
  background: var(--color-teal);
}
.nav__brand-mark::before {
  width: 44%;
  height: 44%;
  top: 18%;
  left: 18%;
}
.nav__brand-mark::after {
  width: 44%;
  height: 22%;
  bottom: 18%;
  right: 18%;
  background: var(--color-white);
}
/* ---- Navigation links ---- */
.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 2vw, 2.25rem);
  font-size: 0.95rem;
  font-weight: 500;
}
.nav__links a {
  color: var(--color-ink-70);
  padding-block: 0.25rem;
  border-bottom: 2px solid transparent;
}
.nav__links a:hover,
.nav__links a[aria-current="page"] {
  color: var(--color-ink);
  border-bottom-color: var(--color-teal);
}
.nav__cta {
  margin-left: 0.5rem;
}
/* ---- Mobile toggle ---- */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
  color: var(--color-ink);
}
.nav__toggle svg {
  width: 24px;
  height: 24px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--color-line);
  padding-block: 3rem;
  background: var(--color-white);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
}
.footer__col {
  min-width: 0;
}
.footer__col h4 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-slate);
  margin-bottom: 1rem;
}
.footer__col ul li {
  margin-bottom: 0.6rem;
}
.footer__col a {
  color: var(--color-ink-70);
  overflow-wrap: anywhere;
}
.footer__col a:hover {
  color: var(--color-teal);
}
.footer__bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: var(--fs-small);
  color: var(--color-slate);
  font-family: var(--font-mono);
}

/* ==========================================================================
   CARDS
   ========================================================================== */
.card {
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-white);
  padding: 2rem;
  transition:
    border-color var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease);
}
.card:hover {
  border-color: var(--color-teal);
  transform: translateY(-2px);
}
.card__index {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--color-teal);
  margin-bottom: 1.25rem;
  display: block;
}
.card__tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

/* ==========================================================================
   TAGS
   ========================================================================== */
.tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25em 0.6em;
  border: 1px solid var(--color-line);
  border-radius: 100px;
  color: var(--color-slate);
}

/* ==========================================================================
   COORD LABEL (spreadsheet-motif mono label, used throughout)
   ========================================================================== */
.coord {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--color-slate);
}

/* ==========================================================================
   PROCESS STEPS
   ========================================================================== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-white);
}
.step {
  padding: 2rem 1.75rem;
  border-right: 1px solid var(--color-line);
  position: relative;
}
.step:last-child {
  border-right: none;
}
.step__num {
  font-family: var(--font-mono);
  color: var(--color-teal);
  font-size: var(--fs-small);
  display: block;
  margin-bottom: 1rem;
}
.step h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5em;
}
.step p {
  font-size: 0.95rem;
}

/* ==========================================================================
   STATS
   ========================================================================== */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 3vw, 2.75rem);
  color: var(--color-teal);
  display: block;
  margin-bottom: 0.25rem;
}
.stat__label {
  font-size: var(--fs-small);
  color: var(--color-slate);
}
.section--dark .stat__label {
  color: rgba(255,255,255,0.6);
}

/* ==========================================================================
   FORM
   ========================================================================== */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.form-grid .field--full {
  grid-column: 1 / -1;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.field label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-slate);
}
.field input,
.field textarea,
.field select {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.8em 0.9em;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-ink);
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--color-teal);
}
.field textarea {
  resize: vertical;
  min-height: 120px;
}
.form-note {
  font-size: 0.85rem;
  color: var(--color-slate);
  margin-top: 1rem;
}
.form-status {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  margin-top: 1rem;
  display: none;
}
.form-status[data-state="success"] {
  display: block;
  color: var(--color-teal-dark);
}
.form-status[data-state="error"] {
  display: block;
  color: #B3402A;
}

/* ==========================================================================
   REVEAL-ON-SCROLL
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity var(--dur-med) var(--ease),
    transform var(--dur-med) var(--ease);
  transition-delay: var(--reveal-delay, 0ms); /* NEW */
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE NAVIGATION
   ========================================================================== */
@media (max-width: 820px) {
  .nav__links {
    position: fixed;
    inset: 0 0 0 auto;
    height: 100vh;
    width: min(78vw, 320px);
    background: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    gap: 1.75rem;
    padding: 6rem var(--gutter) 2rem;
    transform: translateX(100%);
    transition: transform var(--dur-med) var(--ease);
    box-shadow: -12px 0 30px rgba(18,37,62,0.08);
    font-size: 1.05rem;
  }
  .nav__links[data-open="true"] {
    transform: translateX(0);
  }
  .nav__toggle {
    display: inline-flex;
  }
  .nav__cta {
    margin-left: 0;
  }
}

/* ==========================================================================
   RESPONSIVE FOOTER / STATS / FORM
   ========================================================================== */
@media (max-width: 720px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
  .stats {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}
@media (max-width: 500px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 620px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   RESPONSIVE PROCESS STEPS
   (This is the ONLY place .steps' responsive behavior is defined — it was
   previously duplicated in layout.css as well.)
   ========================================================================== */
@media (max-width: 900px) {
  .steps {
    grid-template-columns: 1fr;
  }
  .step {
    border-right: none;
    border-bottom: 1px solid var(--color-line);
  }
  .step:last-child {
    border-bottom: none;
  }
}