/* Page frame: header, hero, footer. Section-specific styles are added in Stage 3. */

/* ---------- Header ---------- */

/* Floating pill header: a transparent sticky strip holding a rounded bar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding-block: var(--space-3);
  pointer-events: none; /* only the bar itself takes clicks */
}

.site-header__inner {
  position: relative;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: min(var(--container), 100% - 2 * var(--gutter));
  height: var(--header-h);
  margin-inline: auto;
  padding: 0 var(--space-2) 0 var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: rgb(250 248 243 / 0.85);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  box-shadow: 0 10px 30px -12px rgb(15 27 61 / 0.25);
  pointer-events: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 2.75rem;
  color: var(--navy);
  text-decoration: none;
}

.brand:hover {
  color: var(--navy);
}

.brand img {
  width: 1.25rem;
  transition: transform var(--dur-base) var(--ease-out);
}

.brand:hover img {
  transform: rotate(-8deg) scale(1.08);
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step-1);
  letter-spacing: -0.02em;
}

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

.brand__four {
  color: var(--blue);
}

/* Mobile: nav is a drop-down panel opened by .menu-toggle (JS). Desktop: inline. */
/* Positioned from the pill bar (its backdrop-filter makes it the containing block) */
.site-nav {
  position: absolute;
  inset: calc(100% + var(--space-2)) 0 auto 0;
  max-height: calc(100vh - var(--header-h) - var(--space-7));
  max-height: calc(100dvh - var(--header-h) - var(--space-7));
  overflow-y: auto;
  overscroll-behavior: contain;
  display: grid;
  gap: var(--space-4);
  padding: var(--space-5) var(--gutter) var(--space-6);
  background: var(--paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  pointer-events: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition:
    opacity var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out),
    visibility 0s linear var(--dur-base);
}

.site-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s;
}

.site-nav ul {
  flex-direction: column;
}

.site-nav ul a {
  display: block;
  padding: var(--space-3) var(--space-2);
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 600;
}

.site-nav__cta {
  justify-self: start;
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--navy);
  cursor: pointer;
}

.has-js .menu-toggle {
  display: inline-flex;
}

.menu-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
}

.menu-toggle__close,
.menu-toggle[aria-expanded="true"] .menu-toggle__open {
  display: none;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__close {
  display: block;
}

.site-nav ul {
  display: flex;
  gap: var(--space-1);
  padding: 0;
  list-style: none;
}

.site-nav ul a {
  border-radius: var(--radius-pill);
  color: var(--navy);
  text-decoration: none;
  transition: background-color var(--dur-fast) var(--ease-out);
}

.site-nav ul a:hover {
  background: var(--cream-deep);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.btn--sm {
  min-height: 2.75rem;
  padding: var(--space-2) var(--space-4);
  font-size: var(--step--1);
}

@media (max-width: 40rem) {
  .site-header__cta {
    display: none;
  }
}

@media (min-width: 60rem) {
  .site-nav {
    position: static;
    max-height: none;
    overflow: visible;
    display: block;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
  }

  /* Links sit in their own inner pill; the current section is filled navy */
  .site-nav ul {
    flex-direction: row;
    padding: 0.25rem;
    border-radius: var(--radius-pill);
    background: var(--cream);
  }

  .site-nav ul a[aria-current="true"] {
    background: var(--navy);
    color: #fff;
  }

  .site-nav ul a {
    display: inline-block;
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-body);
    font-size: var(--step--1);
    font-weight: 500;
    transition:
      background-color var(--dur-base) var(--ease-out),
      color var(--dur-base) var(--ease-out);
  }

  .site-nav__cta,
  .has-js .menu-toggle {
    display: none;
  }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding-block: var(--space-7) var(--space-8);
  isolation: isolate;
}

/* Faint blueprint grid behind the hero */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(to right, rgb(15 27 61 / 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgb(15 27 61 / 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center top;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 60% 40%, #000 30%, transparent 100%);
  mask-image: radial-gradient(ellipse 80% 70% at 60% 40%, #000 30%, transparent 100%);
}

.hero__handle {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--step-0);
  font-weight: 500;
  color: var(--blue);
}

.hero__prompt {
  color: var(--navy-soft);
}

.caret {
  display: inline-block;
  width: 0.55em;
  height: 1.1em;
  margin-left: 0.2em;
  background: var(--blue);
  animation: blink 1.1s steps(1) 4;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .caret {
    animation: none;
  }
}

.hero__grid {
  display: grid;
  gap: var(--space-7);
  align-items: center;
}

.hero__title-accent {
  color: var(--blue);
}

.hero__title {
  margin-top: var(--space-3);
  font-size: var(--step-5);
  letter-spacing: -0.04em;
  line-height: 0.95;
}

/* The headline is the slogan, so it runs one step smaller than a name would */
.hero__title--slogan {
  font-size: var(--step-4);
  line-height: 1.02;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.hero__roles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1) var(--space-2);
  margin-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--navy);
}

.hero__sep {
  color: var(--blue);
}

/* Phones: roles become small pills (no slashes left dangling at line ends),
   and both hero buttons take the full width */
@media (max-width: 40rem) {
  .hero__sep {
    display: none;
  }

  .hero__roles span:not(.hero__sep) {
    padding: 0.2rem 0.6rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    background: var(--paper);
    font-size: 0.75rem;
  }

  .hero__cta .btn {
    flex: 1 1 100%;
    justify-content: center;
  }
}

.hero__intro {
  max-width: 34rem;
  margin-top: var(--space-5);
  font-size: var(--step-1);
  color: var(--navy-soft);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

/* Photo with the big blue "4" layered behind it */
.hero__visual {
  position: relative;
  width: min(100%, 26rem);
  margin-inline: auto;
  isolation: isolate;
}

.hero__four {
  position: absolute;
  z-index: -1;
  left: -14%;
  bottom: -8%;
  width: 62%;
  opacity: 0.95;
}

/* Status card: sits on the photo's bottom edge, styled like a terminal readout */
.status-card {
  position: absolute;
  left: 10%;
  bottom: -1.5rem;
  display: grid;
  gap: 0.15rem;
  padding: var(--space-3) var(--space-4);
  border: 1px solid rgb(124 242 196 / 0.25);
  border-radius: var(--radius-md);
  background: var(--navy-deep);
  color: var(--cream);
  box-shadow: var(--shadow-md);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  line-height: 1.4;
}

.status-card__row {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.status-card__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 0 rgb(15 169 138 / 0.6);
  animation: pulse 2s var(--ease-out) 3;
}

@keyframes pulse {
  70% {
    box-shadow: 0 0 0 0.45rem rgb(15 169 138 / 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgb(15 169 138 / 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .status-card__dot {
    animation: none;
  }
}

.status-card__name {
  font-family: var(--font-display);
  font-size: var(--step-0);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.status-card__role {
  color: var(--color-on-dark-muted);
}

.status-card__row {
  margin-top: var(--space-1);
  padding-top: var(--space-2);
  border-top: 1px solid rgb(242 238 229 / 0.12);
}

.status-card__msg {
  font-family: var(--font-body);
  font-weight: 500;
}

/* Frame + offset block shadow. A pseudo-element (not box-shadow) avoids a
   light seam at the rounded corner where the border antialiases. */
.hero__visual picture {
  position: relative;
  display: block;
  width: 78%;
  margin-left: auto;
}

.hero__visual picture::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: var(--radius-lg);
  background: var(--navy);
  transform: translate(10px, 10px);
}

.hero__photo {
  width: 100%;
  border: 2px solid var(--navy);
  border-radius: var(--radius-lg);
  background: var(--navy);
}

@media (min-width: 60rem) {
  .hero {
    padding-block: var(--space-8) var(--space-9);
  }

  .hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-8);
  }
}

/* ---------- Footer ---------- */

.site-footer {
  padding-block: var(--space-8) var(--space-6);
  background: var(--navy-deep);
  color: var(--color-on-dark-muted);
  font-size: var(--step--1);
  border-top: 6px solid;
  border-image: linear-gradient(90deg, var(--blue) 0 20%, var(--orange) 20% 40%, var(--violet) 40% 60%, var(--teal) 60% 80%, var(--coral) 80% 100%) 1;
}

.site-footer__inner {
  display: grid;
  gap: var(--space-6);
}

.site-footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-footer__brand img {
  width: 1.75rem;
}

.site-footer__name {
  font-family: var(--font-mono);
  font-size: var(--step-2);
  font-weight: 700;
  color: var(--cream);
}

.site-footer__tagline {
  font-family: var(--font-mono);
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
  padding: 0;
  list-style: none;
}

.site-footer a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 2.75rem;
  color: var(--cream);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--mint);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid rgb(242 238 229 / 0.12);
}

.site-footer__top svg {
  width: 1rem;
  height: 1rem;
}

/* Cream focus ring: blue on navy is only ~3.3:1 */
.site-footer :focus-visible {
  outline-color: var(--cream);
}

/* Technical spec line: "key: value" pairs in terminal style */
.site-footer__specs {
  /* Sit right under the copyright row (cancel most of the grid gap) */
  margin-top: calc(var(--space-2) - var(--space-6));
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-on-dark);
}

.site-footer__specs li {
  display: inline-flex;
  align-items: center;
  gap: 0.5ch;
}

.spec__key {
  color: var(--mint);
}

.spec__key::after {
  content: ":";
  color: var(--color-on-dark-muted);
}

.site-footer .spec__link {
  min-height: 1.5rem;
  gap: 0.25rem;
  color: var(--sky);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.site-footer .spec__link:hover {
  color: var(--mint);
}

.spec__link svg {
  width: 0.75rem;
  height: 0.75rem;
}

@media (min-width: 48rem) {
  .site-footer__inner {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .site-footer__bottom,
  .site-footer__specs {
    grid-column: 1 / -1;
  }
}

/* Leave room so the floating WhatsApp button (fixed at every width) never
   covers the last footer line when the page is scrolled to the end. */
.site-footer {
  padding-bottom: calc(var(--space-6) + 4.5rem);
}

/* ---------- Floating WhatsApp button ---------- */

.wa-float {
  position: fixed;
  right: max(var(--space-4), env(safe-area-inset-right));
  bottom: max(var(--space-4), env(safe-area-inset-bottom));
  z-index: 40;
  display: grid;
  place-items: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background: var(--wa-green);
  color: #fff;
  box-shadow: 0 10px 24px -6px rgb(10 18 41 / 0.45);
  transition:
    transform var(--dur-base) var(--ease-out),
    opacity var(--dur-base) var(--ease-out),
    visibility 0s linear 0s;
}

/* Two-tone ring stays visible over cream, navy and blue sections */
.wa-float:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
  box-shadow: 0 0 0 9px var(--navy);
}

.wa-float:hover {
  color: #fff;
  transform: translateY(-2px) scale(1.04);
}

.wa-float svg {
  width: 1.75rem;
  height: 1.75rem;
  fill: currentColor;
}

.wa-float.is-hidden {
  opacity: 0;
  visibility: hidden;
  transform: translateY(1rem);
  transition-delay: 0s, 0s, var(--dur-base);
}

.menu-open .wa-float {
  opacity: 0;
  visibility: hidden;
}

/* Very narrow phones: tighten the header so brand, CTA and menu fit */
@media (max-width: 23rem) {
  .site-header__inner {
    gap: var(--space-2);
  }
}