/* ============================================================
   DESIGN TOKENS — Swiss Brutalist Minimalism
   Source: mockups/onepage/DESIGN.md
   ============================================================ */

:root {
  /* Colors */
  --color-bg:          #000000;
  --color-text:        #FFFFFF;
  --color-text-secondary: #B58047;
  --color-text-muted:  #888888;
  --color-text-dim:    #333333;
  --color-accent:      #00DDDD;
  --color-grid-line:   #4c4546;
  --color-surface:     #1A1A1A;

  /* Typography — Inter */
  --font-heading:  'Inter', system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', monospace;
  --font-body:     'Inter', system-ui, sans-serif;

  /* Type scale */
  --text-display-xl:      120px;
  --text-display-lh:      110px;
  --text-display-weight:  800;
  --text-display-ls:      -0.04em;

  --text-headline-lg:     64px;
  --text-headline-lg-lh:  64px;

  --text-headline-md:     32px;
  --text-headline-md-lh:  40px;

  --text-body-lg:         18px;
  --text-body-lg-lh:      28px;

  --text-body-md:         16px;
  --text-body-md-lh:      24px;

  --text-label-sm:        12px;
  --text-label-sm-lh:     16px;
  --text-label-ls:        0.05em;

  /* Spacing — multiples of 8px */
  --space-unit:    8px;
  --space-xs:      calc(var(--space-unit) * 1);   /* 8px */
  --space-sm:      calc(var(--space-unit) * 2);   /* 16px */
  --space-md:      calc(var(--space-unit) * 3);   /* 24px */
  --space-lg:      calc(var(--space-unit) * 5);   /* 40px */
  --space-xl:      calc(var(--space-unit) * 8);   /* 64px */
  --space-2xl:     calc(var(--space-unit) * 12);  /* 96px */
  --space-3xl:     calc(var(--space-unit) * 20);  /* 160px */

  --margin-desktop: 40px;
  --margin-mobile:  16px;

  /* Misc */
  --border-width:   1px;
  --transition:     200ms ease-in-out;
}

/* ============================================================
   RESET & BASE
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-body-md);
  line-height: var(--text-body-md-lh);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

button {
  cursor: pointer;
  font-family: inherit;
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-accent); }

/* Selection */
::selection {
  background: var(--color-accent);
  color: var(--color-bg);
}

/* ============================================================
   TYPOGRAPHY UTILITIES
   ============================================================ */

.font-heading { font-family: var(--font-heading); }
.font-mono    { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: var(--text-label-ls); }
.font-body    { font-family: var(--font-body); }

/* ============================================================
   LAYOUT — sections share vertical rhythm
   ============================================================ */

.section-head {
  margin-bottom: var(--space-xl);
  padding: 0 var(--margin-desktop);
}

.section-head__label {
  display: block;
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.section-head__title {
  font-size: var(--text-headline-lg);
  line-height: var(--text-headline-lg-lh);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

/* ============================================================
   HEADER
   ============================================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: var(--border-width) solid var(--color-grid-line);
}

.header__nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--margin-desktop);
  max-width: 1440px;
  margin: 0 auto;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.header__logo-img {
  height: 32px;
  width: auto;
  display: block;
}

.header__logo-text {
  font-size: var(--text-headline-md);
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

.header__links {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.header__link {
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  color: var(--color-text-muted);
  transition: color var(--transition), background-color var(--transition);
  padding: var(--space-xs) var(--space-sm);
}

.header__link:hover {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

.header__secondary {
  color: var(--color-text-secondary);
}

/* ============================================================
   SECTION: LAB (Hero)
   ============================================================ */

.lab {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100vh;
  padding: var(--space-3xl) var(--margin-desktop);
  border-bottom: var(--border-width) solid var(--color-grid-line);
  overflow: hidden;
}

.lab__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.lab__inner {
  flex: 1 1 55%;
  min-width: 0;
  position: relative;
}

.lab__canvas {
  flex: 0 0 550px;
  width: 550px;
  height: 550px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-width) solid var(--color-grid-line);
}

.lab__title {
  font-size: var(--text-display-xl);
  line-height: var(--text-display-lh);
  font-weight: var(--text-display-weight);
  letter-spacing: var(--text-display-ls);
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
}

.lab__title[data-cursor]::after {
  content: '_';
  color: var(--color-accent);
  animation: cursor-blink 1s step-end infinite;
}

.lab__subtitle {
  font-size: var(--text-headline-md);
  line-height: var(--text-headline-md-lh);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.01em;
}

.lab__manifesto {
  font-size: var(--text-body-lg);
  line-height: var(--text-body-lg-lh);
  color: var(--color-text-dim);
  max-width: 580px;
  margin-bottom: var(--space-lg);
}

/* Decorative grid lines */
.lab__grid-line-v {
  position: absolute;
  top: 0;
  right: var(--margin-desktop);
  width: var(--border-width);
  height: 100%;
  background-color: var(--color-grid-line);
}

.lab__grid-line-h {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: var(--border-width);
  background-color: var(--color-grid-line);
}

/* ============================================================
   COMPONENTS: BUTTONS
   ============================================================ */

.btn {
  display: inline-block;
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  padding: var(--space-sm) var(--space-md);
  border: var(--border-width) solid var(--color-accent);
  background: transparent;
  color: var(--color-accent);
  transition: background-color var(--transition), color var(--transition);
  border-radius: 0;
  text-align: center;
}

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

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn--full {
  width: 100%;
}

/* ============================================================
   SECTION: LEDGER (Portfolio)
   ============================================================ */

.ledger {
  border-bottom: var(--border-width) solid var(--color-grid-line);
}

.ledger__inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--space-2xl) 0;
}

.ledger__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
  padding: 0 var(--margin-desktop);
}

.ledger__grid .project-card:nth-child(1) {
  grid-column: 1 / span 7;
}

.ledger__grid .project-card:nth-child(2) {
  grid-column: 8 / span 5;
}

/* ============================================================
   COMPONENTS: PROJECT CARD
   ============================================================ */

.project-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  border: var(--border-width) solid var(--color-grid-line);
  padding: var(--space-lg);
}

.project-card__status {
  display: block;
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  margin-bottom: var(--space-xs);
}

.project-card__status--active {
  color: var(--color-accent);
}

.project-card__status--incubating {
  color: var(--color-text-muted);
}

.project-card__title {
  font-size: var(--text-headline-md);
  line-height: var(--text-headline-md-lh);
  font-weight: 700;
  color: var(--color-text);
  text-transform: none;
}

.project-card__visual {
  aspect-ratio: 16 / 9;
  border: var(--border-width) solid var(--color-grid-line);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--color-bg);
}

.project-card__desc {
  font-size: var(--text-body-md);
  line-height: var(--text-body-md-lh);
  color: var(--color-text-muted);
}

.project-card__tags {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.tag {
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  padding: var(--space-xs) var(--space-sm);
  border: var(--border-width) solid var(--color-grid-line);
  color: var(--color-text-secondary);
}

/* Nodesweeper carousel */
.project-card__visual--nodesweeper {
  background-color: #020808;
  position: relative;
  overflow: hidden;
}

.carousel {
  position: absolute;
  inset: 0;
  cursor:pointer;
}

.carousel__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.6s ease-in-out;
  border-radius: 0;
}

.carousel__img--active {
  opacity: 1;
}

/* Classified placeholder */
.project-card__visual--classified {
  background-color: #030303;
  background-image:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 15px,
      rgba(0,221,221,0.04) 15px,
      rgba(0,221,221,0.04) 16px
    );
}

.classified-text {
  font-size: var(--text-headline-md);
  color: var(--color-accent);
  opacity: 0.6;
}

/* ============================================================
   SECTION: PIPELINE (Teaser)
   ============================================================ */

.pipeline {
  border-bottom: var(--border-width) solid var(--color-grid-line);
  padding: var(--space-xl) var(--margin-desktop);
}

.pipeline__inner {
  max-width: 1440px;
  margin: 0 auto;
}

.pipeline__prefix {
  display: block;
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  opacity: 0.8;
}

.pipeline__text {
  font-size: var(--text-body-md);
  line-height: var(--text-body-md-lh);
  color: var(--color-text-dim);
  max-width: 520px;
}

/* ============================================================
   SECTION: UPLINK (Contact)
   ============================================================ */

.uplink {
  border-bottom: var(--border-width) solid var(--color-grid-line);
}

.uplink__inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--space-2xl) 0;
}

.uplink__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-lg);
  padding: 0 var(--margin-desktop);
}

.uplink__info {
  grid-column: 1 / span 5;
}

.uplink__subtitle {
  font-size: var(--text-body-md);
  line-height: var(--text-body-md-lh);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.uplink__email {
  display: inline-block;
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  color: var(--color-accent);
  padding: var(--space-xs) 0;
  border-bottom: var(--border-width) solid var(--color-accent);
  transition: background-color var(--transition), color var(--transition);
}

.uplink__email:hover {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

.uplink__form {
  grid-column: 7 / span 6;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* ============================================================
   COMPONENTS: FORM FIELDS
   ============================================================ */

.field {
  position: relative;
}

.field__label {
  display: block;
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.field__input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: var(--border-width) solid var(--color-grid-line);
  color: var(--color-text);
  font-size: var(--text-body-md);
  line-height: var(--text-body-md-lh);
  padding: var(--space-xs) 0;
  outline: none;
  transition: border-color var(--transition);
  caret-color: var(--color-accent);
  border-radius: 0;
}

.field__input::placeholder {
  color: var(--color-text-dim);
}

.field__input:focus {
  border-bottom-color: var(--color-accent);
}

.field__input--textarea {
  resize: vertical;
  min-height: 96px;
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  padding: var(--space-lg) 0;
}

.footer__inner {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
  padding: 0 var(--margin-desktop);
}

.footer__brand {
  grid-column: 1 / span 4;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__logo {
  font-size: var(--text-headline-md);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.footer__copy {
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  color: var(--color-text-muted);
}

.footer__links {
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer__col-title {
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.footer__link {
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.footer__link:hover {
  color: var(--color-accent);
}

.footer__status {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  color: var(--color-text-muted);
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--color-grid-line);
}

.status-dot--on {
  background-color: var(--color-accent);
}

/* ============================================================
   LIGHTBOX
   ============================================================ */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
}

.lightbox--open {
  display: flex;
}

.lightbox__close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: none;
  border: var(--border-width) solid var(--color-accent);
  color: var(--color-accent);
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  padding: var(--space-xs) var(--space-sm);
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition);
  z-index: 1;
  border-radius: 0;
}

.lightbox__close:hover {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

.lightbox__prev,
.lightbox__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: var(--border-width) solid var(--color-grid-line);
  color: var(--color-text-muted);
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
  border-radius: 0;
}

.lightbox__prev:hover,
.lightbox__next:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.lightbox__prev {
  left: var(--space-md);
}

.lightbox__next {
  right: var(--space-md);
}

.lightbox__img {
  max-width: 85vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 0;
}

.lightbox__counter {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-label-sm);
  line-height: var(--text-label-sm-lh);
  color: var(--color-text-muted);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0; }
}

@keyframes glitch-shift {
  0%, 100% { transform: translate(0); }
  20%      { transform: translate(-2px, 1px); }
  40%      { transform: translate(2px, -1px); }
  60%      { transform: translate(-1px, 0); }
  80%      { transform: translate(1px, 1px); }
}

.lab__title.glitch {
  animation: glitch-shift 200ms ease-in-out 1;
}

/* ============================================================
   RESPONSIVE — Mobile (< 768px)
   ============================================================ */

@media (max-width: 767px) {
  :root {
    --text-display-xl:  40px;
    --text-display-lh:  44px;
    --text-headline-lg: 32px;
    --text-headline-lg-lh: 40px;
    --text-headline-md: 24px;
    --text-headline-md-lh: 32px;
    --text-body-lg:     16px;
    --text-body-lg-lh:  24px;
    --text-body-md:     15px;
    --text-body-md-lh:  22px;
  }

  .section-head {
    padding: 0 var(--margin-mobile);
  }

  /* Header */
  .header__nav {
    padding: var(--space-sm) var(--margin-mobile);
  }

  .header__logo-img {
    height: 20px;
  }

  .header__logo-text {
    font-size: 14px;
  }

  .header__links {
    gap: var(--space-sm);
  }

  .header__link {
    font-size: 10px;
    padding: var(--space-xs);
  }

  /* Lab */
  .lab {
    padding: var(--space-3xl) var(--margin-mobile);
    min-height: 90vh;
  }

  .lab__content {
    flex-direction: column;
  }

  .lab__inner {
    flex: 1 1 auto;
  }

  .lab__canvas {
    display: none;
  }

  .lab__grid-line-v {
    right: var(--margin-mobile);
  }

  /* Ledger */
  .ledger__grid {
    grid-template-columns: 1fr;
    padding: 0 var(--margin-mobile);
  }

  .ledger__grid .project-card:nth-child(1),
  .ledger__grid .project-card:nth-child(2) {
    grid-column: 1 / -1;
  }

  .project-card {
    padding: var(--space-md);
  }

  /* Pipeline */
  .pipeline {
    padding: var(--space-lg) var(--margin-mobile);
  }

  /* Uplink */
  .uplink__grid {
    grid-template-columns: 1fr;
    padding: 0 var(--margin-mobile);
  }

  .uplink__info,
  .uplink__form {
    grid-column: 1 / -1;
  }

  /* Footer */
  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg) var(--space-md);
    padding: 0 var(--margin-mobile);
  }

  .footer__brand {
    grid-column: 1 / -1;
  }

  .lightbox__prev,
  .lightbox__next {
    padding: var(--space-xs) var(--space-sm);
    font-size: 10px;
  }

  .lightbox__prev { left: var(--space-sm); }
  .lightbox__next { right: var(--space-sm); }

  .lightbox__close { top: var(--space-sm); right: var(--space-sm); }
}