/* NikoOS — brutalist coming-soon demo (standalone) */

:root {
  --ink: #0a0a0a;
  --paper: #f4f0e8;
  --accent: #00c8ff;
  --accent-2: #ff2d6a;
  --border-w: 4px;
  --border: var(--border-w) solid var(--ink);
  --shadow: 8px 8px 0 var(--ink);
  --shadow-sm: 4px 4px 0 var(--ink);
  --font: "IBM Plex Mono", "Consolas", "Courier New", monospace;
  --step: 0.14s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-h: 3.75rem;
  --gutter: clamp(1rem, 4vw, 1.5rem);
  --footer-bg: #000000;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: clamp(14px, 1.5vw, 17px);
  line-height: 1.45;
  overflow-x: hidden;
}

/* Scanline overlay */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.04;
  background: repeating-linear-gradient(
    transparent 0,
    transparent 2px,
    var(--ink) 2px,
    var(--ink) 3px
  );
  mix-blend-mode: multiply;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
}

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

/* —— Toggle: inverted brutal mode —— */
#invert-toggle {
  position: fixed;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  z-index: -1;
}

/* —— Navbar —— */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--accent);
  border-bottom: var(--border);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.75rem;
  padding-top: env(safe-area-inset-top, 0);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding: 0.55rem max(var(--gutter), env(safe-area-inset-right, 0))
    0.55rem max(var(--gutter), env(safe-area-inset-left, 0));
  min-height: var(--nav-h);
}

.site-nav__brand {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  min-width: 0;
  flex: 1 1 auto;
  text-decoration: none;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
}

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

.site-nav__tag {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  padding: 0.2rem 0.45rem;
  border: 2px solid var(--ink);
  background: var(--paper);
  box-shadow: 2px 2px 0 var(--ink);
  font-size: 0.62rem;
  line-height: 1.2;
}

.site-nav__tag-full {
  display: none;
}

.site-nav__tag-short {
  display: inline;
}

.site-nav__invert {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-shrink: 0;
  user-select: none;
  min-height: 2.75rem;
  min-width: 2.75rem;
  padding: 0.35rem 0.5rem;
  margin: -0.35rem -0.25rem -0.35rem 0;
  border: 2px solid transparent;
  border-radius: 0;
  -webkit-tap-highlight-color: transparent;
}

.site-nav__invert-label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

@media (min-width: 480px) {
  :root {
    --nav-h: 3.5rem;
  }

  .site-nav__inner {
    gap: 1rem;
    padding: 0.65rem max(var(--gutter), env(safe-area-inset-right, 0))
      0.65rem max(var(--gutter), env(safe-area-inset-left, 0));
  }

  .site-nav__brand {
    gap: 0.65rem;
  }

  .site-nav__tag {
    font-size: 0.7rem;
    padding: 0.25rem 0.55rem;
  }

  .site-nav__tag-full {
    display: inline;
  }

  .site-nav__tag-short {
    display: none;
  }

  .site-nav__invert {
    min-width: auto;
    padding: 0.25rem 0.35rem;
    margin: 0;
  }

  .site-nav__invert-label {
    position: static;
    width: auto;
    height: auto;
    margin: 0;
    overflow: visible;
    clip-path: none;
    white-space: nowrap;
  }
}

@media (min-width: 768px) {
  .site-nav__inner {
    padding: 0.75rem max(1.5rem, env(safe-area-inset-right, 0))
      0.75rem max(1.5rem, env(safe-area-inset-left, 0));
  }
}

.brand-logo {
  display: block;
  width: auto;
  height: auto;
  object-fit: contain;
  border: 3px solid var(--ink);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
  padding: 0.15rem 0.35rem;
}

.brand-logo--nav {
  max-height: 2.22rem;
  max-width: min(50.4vw, 9rem);
}

@media (min-width: 480px) {
  .brand-logo--nav {
    max-height: 2.4rem;
    max-width: 10.2rem;
  }
}

.brand-logo--footer {
  max-width: min(220px, 100%);
  max-height: 3.5rem;
  padding: 0;
  border: none;
  background: transparent;
  box-shadow: none;
}

.toggle-pill {
  width: 3rem;
  height: 1.35rem;
  border: var(--border);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform var(--step), box-shadow var(--step);
}

.toggle-pill::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: calc(50% - 4px);
  height: calc(100% - 4px);
  background: var(--ink);
  border: 2px solid var(--ink);
  transition: transform var(--step);
}

#invert-toggle:checked ~ .site-nav .toggle-pill::after {
  transform: translateX(100%);
}

#invert-toggle:checked ~ .site-nav {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--paper);
}

#invert-toggle:checked ~ .site-nav .site-nav__tag {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--paper);
  box-shadow: 2px 2px 0 var(--paper);
}

body:has(#invert-toggle:checked) {
  background: #0a0a0a;
  color: #f4f0e8;
}

#invert-toggle:checked ~ main,
#invert-toggle:checked ~ footer {
  --ink: #f4f0e8;
  --paper: #0a0a0a;
  --accent: #ff2d6a;
  --accent-2: #00c8ff;
  --shadow: 8px 8px 0 var(--ink);
  --footer-bg: var(--paper);
}

#invert-toggle:checked ~ main .hero-marquee-inner {
  -webkit-text-stroke-color: var(--paper);
}

/* —— Scroll progress (CSS-driven via animation timeline) —— */
.progress {
  position: fixed;
  top: calc(var(--nav-h) + env(safe-area-inset-top, 0px) - 6px);
  left: 0;
  height: 6px;
  width: 100%;
  z-index: 99;
  background: var(--ink);
  pointer-events: none;
}

.progress__fill {
  height: 100%;
  width: 100%;
  transform-origin: 0 50%;
  transform: scaleX(var(--scroll, 0));
  background: var(--accent-2);
  border-right: var(--border);
}

@supports (animation-timeline: scroll()) {
  .progress__fill {
    animation: scrollx linear;
    animation-timeline: scroll(root);
  }

  @keyframes scrollx {
    from {
      transform: scaleX(0);
    }
    to {
      transform: scaleX(1);
    }
  }
}

/* —— Main —— */
main {
  padding-top: calc(var(--nav-h) + env(safe-area-inset-top, 0px) + 0.25rem);
}

.wrap {
  width: min(1120px, calc(100% - 2 * var(--gutter)));
  margin-inline: auto;
}

/* Hero */
.hero {
  position: relative;
  padding: clamp(2.5rem, 8vw, 5rem) 0 clamp(3rem, 10vw, 6rem);
  border-bottom: var(--border);
  background: var(--paper);
}

.hero-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}

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

.hero-title {
  margin: 0 0 0.5rem;
  font-size: clamp(2.25rem, 11vw, 4.25rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.hero-title .glitch-hover {
  max-width: 100%;
  overflow-wrap: anywhere;
}

.hero-title__gap {
  display: inline-block;
  width: 0.2em;
}

.hero .eyebrow {
  display: inline-block;
  padding: 0.35rem 0.6rem;
  background: var(--accent);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  font-weight: 800;
  font-size: 0.8rem;
  margin-bottom: 1rem;
  animation: pop 0.6s var(--step) both;
}

@keyframes pop {
  from {
    opacity: 0;
    transform: translate(8px, 8px);
    box-shadow: 0 0 0 var(--ink);
  }
}

.hero .lead {
  margin: 0;
  max-width: 36ch;
  font-size: clamp(0.92rem, 2.8vw, 1.05rem);
  font-weight: 600;
  overflow-wrap: break-word;
}

.hero-aside {
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--paper);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 220px;
  transition: transform var(--step), box-shadow var(--step);
}

.hero-aside strong {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.hero-aside .big {
  font-size: clamp(1.75rem, 8vw, 2.75rem);
  font-weight: 800;
  line-height: 1;
}

.hero-aside__note {
  margin: 0;
  font-size: clamp(0.8rem, 2.5vw, 0.85rem);
  font-weight: 600;
  line-height: 1.4;
}

/* Marquee — full viewport width */
.hero-marquee {
  margin-top: clamp(1.25rem, 5vw, 2.5rem);
  width: 100%;
  border-top: var(--border);
  border-bottom: var(--border);
  border-left: none;
  border-right: none;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

@media (min-width: 640px) {
  .hero-marquee {
    width: 100vw;
    max-width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    border-left: none;
    border-right: none;
  }
}

.hero-marquee-inner {
  display: flex;
  gap: 3rem;
  padding: 0.65rem 0;
  width: max-content;
  animation: marquee 22s linear infinite;
  font-weight: 800;
  text-transform: uppercase;
  font-size: clamp(0.85rem, 2vw, 1rem);
  letter-spacing: 0.08em;
  -webkit-text-stroke: 1px var(--paper);
  color: transparent;
}

.hero-marquee-inner span {
  white-space: nowrap;
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.hero-marquee:hover .hero-marquee-inner {
  animation-play-state: paused;
}

/* Feature grid — interactive cards */
.features {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
}

.features h2 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  text-transform: uppercase;
  max-width: 20ch;
}

.card-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .card-grid {
    gap: 1.25rem;
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .card-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.card {
  position: relative;
  border: var(--border);
  padding: 1.25rem 1rem 4rem;
  background: var(--paper);
  box-shadow: var(--shadow-sm);
  cursor: crosshair;
  transition: transform var(--step), box-shadow var(--step), background var(--step);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    transparent 40%,
    color-mix(in srgb, var(--accent) 35%, transparent) 40%,
    color-mix(in srgb, var(--accent-2) 35%, transparent) 100%
  );
  opacity: 0;
  transition: opacity var(--step);
  pointer-events: none;
}

@media (hover: hover) {
  .card:hover {
    transform: translate(-3px, -3px);
    box-shadow: var(--shadow);
  }

  .card:hover::before {
    opacity: 1;
  }

  .hero-aside:hover {
    transform: translate(-4px, -4px);
    box-shadow: 12px 12px 0 var(--ink);
  }

  .cta-btn:hover {
    transform: translate(-2px, -2px);
    box-shadow: 10px 10px 0 var(--ink);
  }

  details summary:hover {
    background: color-mix(in srgb, var(--accent) 40%, var(--paper));
  }

  .glitch-hover:hover {
    animation: glitch 0.4s steps(2) both;
  }
}

.card h3 {
  position: relative;
  margin: 0 0 0.5rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  z-index: 1;
}

.card p {
  position: relative;
  margin: 0;
  font-size: 0.85rem;
  z-index: 1;
}

.card .idx {
  position: absolute;
  bottom: 0.75rem;
  right: 0.75rem;
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1;
  opacity: 0.15;
  z-index: 1;
}

/* Details / accordion — pure CSS interaction */
.accordion {
  padding: 0 0 clamp(3rem, 8vw, 5rem);
}

.accordion h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  text-transform: uppercase;
}

details {
  border: var(--border);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
  margin-bottom: 0.75rem;
  transition: box-shadow var(--step);
}

details[open] {
  box-shadow: var(--shadow);
}

summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.25rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  user-select: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
  transition: transform var(--step);
}

details[open] summary::after {
  content: "−";
}

details > div {
  padding: 0 1.25rem 1.15rem;
  border-top: 3px dashed var(--ink);
  font-size: 0.9rem;
}

/* CTA strip */
.cta {
  border-top: var(--border);
  border-bottom: var(--border);
  background: var(--accent);
  padding: clamp(2rem, 5vw, 3rem) 0;
}

.cta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.cta-inner p {
  margin: 0;
  font-weight: 800;
  text-transform: uppercase;
  font-size: clamp(1rem, 2.4vw, 1.25rem);
  max-width: 28ch;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.25rem;
  background: var(--paper);
  border: var(--border);
  box-shadow: var(--shadow);
  font-family: inherit;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: transform var(--step), box-shadow var(--step);
}

.cta-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 4px 4px 0 var(--ink);
}

.cta-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

/* Notify dialog */
.notify-dialog {
  width: min(28rem, calc(100% - 2 * var(--gutter)));
  max-height: calc(100vh - 2 * var(--gutter));
  margin: auto;
  padding: 0;
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--paper);
  color: var(--ink);
  font-family: inherit;
}

.notify-dialog::backdrop {
  background: color-mix(in srgb, var(--ink) 55%, transparent);
}

.notify-dialog__form {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.notify-dialog__title {
  margin: 0;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.notify-dialog__lead {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.45;
}

.notify-dialog__label {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.notify-dialog__input {
  width: 100%;
  padding: 0.7rem 0.75rem;
  border: var(--border);
  box-shadow: var(--shadow-sm);
  background: var(--paper);
  color: var(--ink);
  font-family: inherit;
  font-size: 0.9rem;
}

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

.notify-dialog__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.25rem;
}

.notify-dialog__close {
  padding: 0.7rem 1rem;
  border: var(--border);
  background: transparent;
  font-family: inherit;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.notify-dialog__status {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 700;
}

.notify-dialog__status--error {
  color: var(--accent-2);
}

@media (max-width: 639px) {
  .notify-dialog__actions {
    flex-direction: column;
  }

  .notify-dialog__actions .cta-btn,
  .notify-dialog__close {
    width: 100%;
    justify-content: center;
  }
}

/* Glitch headline on hover (subtle) */
.glitch-hover {
  position: relative;
  display: inline-block;
}

@keyframes glitch {
  0% {
    transform: translate(0);
    text-shadow: none;
  }
  25% {
    transform: translate(-2px, 1px);
    text-shadow: 2px 0 var(--accent-2);
  }
  50% {
    transform: translate(2px, -1px);
    text-shadow: -2px 0 var(--accent);
  }
  75% {
    transform: translate(-1px, -2px);
  }
  100% {
    transform: translate(0);
  }
}

/* Footer */
footer.site-footer {
  background: var(--footer-bg);
  color: var(--paper);
  padding: 2rem 0 calc(2.5rem + env(safe-area-inset-bottom, 0));
  border-top: var(--border);
}

footer.site-footer a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

footer.site-footer a:hover {
  color: var(--accent-2);
}

.footer-grid {
  width: min(1120px, calc(100% - 2 * var(--gutter)));
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: grid;
  gap: 1.5rem;
}

.footer-contact strong {
  display: block;
  margin-bottom: 0.35rem;
}

.footer-contact a {
  color: var(--accent);
  word-break: break-all;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
}

.footer-brand {
  line-height: 0;
}

.footer-meta {
  font-size: 0.8rem;
  opacity: 0.85;
  max-width: 42ch;
}

.footer-credit {
  width: min(1120px, calc(100% - 2 * var(--gutter)));
  margin: 1.5rem auto 0;
  padding: 1.25rem var(--gutter) 0;
  border-top: 3px dashed color-mix(in srgb, var(--paper) 45%, transparent);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

/* —— Mobile & tablet responsive —— */
@media (max-width: 639px) {
  :root {
    --nav-h: 3.5rem;
    --border-w: 3px;
    --shadow: 6px 6px 0 var(--ink);
    --shadow-sm: 3px 3px 0 var(--ink);
  }

  body {
    font-size: 15px;
  }

  .hero {
    padding: clamp(1.25rem, 5vw, 2rem) 0 clamp(2rem, 6vw, 3rem);
  }

  .hero-grid {
    gap: 1.25rem;
  }

  .hero .eyebrow {
    font-size: 0.72rem;
    margin-bottom: 0.75rem;
  }

  .hero .lead {
    max-width: none;
  }

  .hero-title {
    font-size: clamp(2rem, 12vw, 3rem);
  }

  .hero-aside {
    min-height: auto;
    padding: 1rem;
  }

  .hero-marquee-inner {
    font-size: 0.72rem;
    gap: 2rem;
    animation-duration: 28s;
  }

  .features {
    padding: clamp(1.75rem, 5vw, 2.5rem) 0;
  }

  .features h2,
  .accordion h2 {
    font-size: clamp(1.15rem, 5vw, 1.4rem);
    max-width: none;
  }

  .card {
    padding: 1rem 0.85rem 3.25rem;
  }

  .card .idx {
    font-size: 1.75rem;
  }

  .accordion {
    padding-bottom: clamp(2rem, 6vw, 3rem);
  }

  summary {
    min-height: 2.85rem;
    padding: 0.85rem 1rem;
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    gap: 0.5rem;
  }

  summary::after {
    font-size: 1.25rem;
  }

  details > div {
    padding: 0 1rem 1rem;
    font-size: 0.85rem;
  }

  .cta {
    padding: clamp(1.5rem, 4vw, 2rem) 0;
  }

  .cta-inner {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    gap: 1rem;
  }

  .cta-inner p {
    max-width: none;
    font-size: clamp(0.9rem, 3.5vw, 1.05rem);
  }

  .cta-btn {
    width: 100%;
    justify-content: center;
    min-height: 3rem;
    font-size: 0.75rem;
  }

  footer.site-footer {
    padding-top: 1.5rem;
  }

  .footer-grid {
    gap: 1.25rem;
  }

  .footer-contact {
    text-align: left;
  }

  .brand-logo--footer {
    max-width: min(200px, 78vw);
  }

  .footer-credit {
    font-size: 0.72rem;
    line-height: 1.5;
    text-align: center;
  }
}

@media (max-width: 639px) {
  #invert-toggle:checked ~ main,
  #invert-toggle:checked ~ footer {
    --shadow: 6px 6px 0 var(--ink);
    --shadow-sm: 3px 3px 0 var(--ink);
  }
}

@media (max-width: 359px) {
  .site-nav__tag {
    display: none;
  }

  .brand-logo--nav {
    max-width: 45.6vw;
  }
}

@media (min-width: 640px) and (max-width: 899px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .hero-aside {
    min-height: auto;
  }
}