/* =========================================================
   PITCHWORKS — Design tokens
   ========================================================= */
:root{
  --blueprint-900: #0A1F3D;
  --blueprint-800: #0F2A4E;
  --blueprint-700: #15375F;
  --paper: #EEF1F5;
  --paper-2: #E2E7ED;
  --white: #FFFFFF;
  --ink: #0B1220;
  --ink-soft: #4B5768;
  --orange: #FF5722;
  --orange-dark: #D8471A;
  --steel: #8695A7;
  --green: #1F9D68;
  --grid-line-dark: rgba(255,255,255,0.07);
  --grid-line-light: rgba(10,31,61,0.06);
  --border: rgba(10,31,61,0.12);

  --font-display: "Space Grotesk", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  --nav-w: 280px;
  --radius: 3px;
  --ease: cubic-bezier(.2,.85,.3,1);
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior:auto !important; }
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3{ font-family: var(--font-display); margin:0; letter-spacing:-0.01em; }
p{ margin:0; }
button{ font-family:inherit; cursor:pointer; }
:focus-visible{ outline: 2.5px solid var(--orange); outline-offset:3px; }

.section-inner{ max-width: 980px; margin: 0 auto; padding: 6rem 2.5rem; position:relative; z-index:1; }

.sheet-label{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--orange);
  margin-bottom: 1.25rem;
  display:inline-block;
}
.sheet-label--light{ color: #FF8A5C; }

.section-title{
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  line-height:1.15;
  max-width: 22ch;
  margin-bottom: 1.25rem;
  font-weight:600;
}
.section-title--light{ color: var(--paper); }

/* =========================================================
   Buttons
   ========================================================= */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:0.5rem;
  padding: 0.8rem 1.5rem;
  font-family: var(--font-body);
  font-weight:600; font-size:0.92rem;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  transition: transform .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
}
.btn-orange{ background: var(--orange); color: var(--white); }
.btn-orange:hover{ background: var(--orange-dark); transform: translateY(-2px); }
.btn-line{ border-color: currentColor; color: inherit; }
.btn-line:hover{ background: rgba(255,255,255,0.08); transform: translateY(-2px); }
.btn-lg{ padding: 0.95rem 1.9rem; font-size:0.98rem; }
.btn-block{ width:100%; }

/* =========================================================
   Blueprint grid texture
   ========================================================= */
.blueprint-grid{
  position:absolute; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(var(--grid-line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-dark) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, black 40%, transparent 90%);
}
.blueprint-grid--dark{
  background-image:
    linear-gradient(var(--grid-line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-dark) 1px, transparent 1px);
}

/* =========================================================
   Mobile top bar
   ========================================================= */
.mobile-bar{
  display:none;
  position: fixed; top:0; left:0; right:0; z-index: 110;
  align-items:center; justify-content:space-between;
  padding: 0.9rem 1.25rem;
  background: var(--blueprint-900);
  color: var(--paper);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.mobile-logo{ display:flex; align-items:center; gap:0.5rem; font-family: var(--font-display); font-weight:700; letter-spacing:0.04em; font-size:0.95rem; color: var(--paper); }
.mobile-logo svg{ color: var(--orange); }
.mobile-toggle{ display:flex; flex-direction:column; justify-content:center; gap:5px; width:34px; height:30px; background:none; border:none; }
.mobile-toggle span{ height:2px; background: var(--paper); transition: transform .3s var(--ease), opacity .3s var(--ease); }
.mobile-toggle.is-open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.mobile-toggle.is-open span:nth-child(2){ opacity:0; }
.mobile-toggle.is-open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   Side navigation
   ========================================================= */
.side-nav{
  position: fixed; top:0; left:0; bottom:0; width: var(--nav-w);
  background: var(--blueprint-900);
  color: var(--paper);
  display:flex; flex-direction:column;
  padding: 2.25rem 1.75rem 1.75rem;
  z-index: 100;
  border-right: 1px solid rgba(255,255,255,0.08);
}
.side-nav-top{ margin-bottom: 3rem; }
.brand{ display:flex; align-items:center; gap:0.6rem; color: var(--paper); }
.brand svg{ color: var(--orange); flex-shrink:0; }
.brand-text{ font-family: var(--font-display); font-weight:700; font-size:1.05rem; letter-spacing:0.05em; }
.brand-tag{ font-family: var(--font-mono); font-size:0.72rem; color: var(--steel); margin-top:0.6rem; letter-spacing:0.03em; }

.side-nav-links{ display:flex; flex-direction:column; gap:0.15rem; flex:1; }
.nav-link{
  display:flex; align-items:center; gap:0.85rem;
  padding: 0.7rem 0.6rem;
  font-size: 0.92rem; font-weight:500;
  color: rgba(238,241,245,0.62);
  border-radius: var(--radius);
  border-left: 2px solid transparent;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}
.nav-index{
  font-family: var(--font-mono); font-size:0.7rem; color: var(--steel);
  width: 38px; flex-shrink:0;
}
.nav-link:hover{ color: var(--paper); background: rgba(255,255,255,0.04); }
.nav-link.is-active{ color: var(--paper); background: rgba(255,87,34,0.1); border-left-color: var(--orange); }
.nav-link.is-active .nav-index{ color: var(--orange); }

.side-nav-bottom{ display:flex; flex-direction:column; gap:1rem; padding-top:1.5rem; border-top: 1px solid rgba(255,255,255,0.08); }
.nav-status{ display:flex; align-items:center; gap:0.5rem; font-family: var(--font-mono); font-size:0.72rem; color: var(--steel); }
.status-dot{ width:6px; height:6px; border-radius:50%; background: var(--green); flex-shrink:0; box-shadow: 0 0 0 3px rgba(31,157,104,0.2); }
.status-dot::after{ content:""; }
.side-phone{ font-family: var(--font-mono); font-size:0.95rem; color: var(--paper); }
.side-phone:hover{ color: var(--orange); }

.nav-scrim{
  display:none; position: fixed; inset:0; background: rgba(10,18,32,0.5); z-index: 95;
}

/* =========================================================
   Main layout
   ========================================================= */
.main{ margin-left: var(--nav-w); }
.section{ position: relative; overflow: hidden; }

/* =========================================================
   Hero
   ========================================================= */
.hero{ background: var(--blueprint-900); color: var(--paper); }
.hero-inner{
  display:grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items:center;
  padding-top: 5.5rem; padding-bottom: 3rem;
}
.hero-copy h1{ font-size: clamp(2rem, 3.6vw, 3.1rem); line-height:1.1; margin-bottom:1.5rem; font-weight:600; }
.hero-em{ color: var(--orange); }
.hero-sub{ font-size:1.02rem; color: rgba(238,241,245,0.72); max-width:46ch; margin-bottom:2.25rem; }
.hero-ctas{ display:flex; gap:1rem; flex-wrap:wrap; }

.hero-diagram{ position:relative; }
.diagram-svg{ width:100%; height:auto; overflow:visible; }
.diagram-caption{ font-family: var(--font-mono); font-size:0.68rem; text-align:center; color: var(--steel); margin-top:0.75rem; letter-spacing:0.05em; }

.roof-outline{ stroke: var(--paper); stroke-width:2; }
.dim-line{ stroke: var(--steel); stroke-width:1; }
.tick{ stroke: var(--steel); stroke-width:1; }
.member{ stroke: rgba(238,241,245,0.35); stroke-width:1.5; }
.leader{ stroke: var(--orange); stroke-width:1; }
.angle-arc{ stroke: var(--orange); stroke-width:1.5; }
.node{ fill: var(--orange); }
.diagram-label{ font-family: var(--font-mono); font-size:11px; fill: var(--paper); opacity:0; animation: fadeInLabel 0.4s var(--ease) forwards; animation-delay: 1.9s; }
.diagram-label--fade{ animation-delay: var(--del); }

.draw{
  stroke-dasharray: var(--len);
  stroke-dashoffset: var(--len);
  animation: drawLine var(--dur) var(--ease) forwards;
  animation-delay: var(--del);
}
.draw-fade{ opacity:0; animation: fadeInLabel 0.3s var(--ease) forwards; animation-delay: var(--del); }
@keyframes drawLine{ to{ stroke-dashoffset:0; } }
@keyframes fadeInLabel{ to{ opacity:1; } }

.data-strip{
  position:relative; z-index:1;
  border-top: 1px solid rgba(255,255,255,0.1);
  display:grid; grid-template-columns: repeat(4,1fr);
}
.data-item{
  padding: 1.75rem 2.5rem;
  border-right: 1px solid rgba(255,255,255,0.1);
  display:flex; flex-direction:column;
}
.data-item:last-child{ border-right:none; }
.data-num{ font-family: var(--font-display); font-size:1.9rem; font-weight:700; color: var(--paper); }
.data-unit{ font-family: var(--font-mono); font-size:0.75rem; color: var(--orange); margin-top:0.1rem; }
.data-label{ font-family: var(--font-mono); font-size:0.7rem; color: var(--steel); margin-top:0.4rem; }

/* =========================================================
   Capabilities
   ========================================================= */
.capabilities{ background: var(--paper); }
.cap-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:1.25rem; margin-top:2.5rem; }
.cap-card{
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  opacity:0; transform: translateY(20px);
  transition: opacity .6s var(--ease), transform .6s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.cap-card.is-visible{ opacity:1; transform: translateY(0); }
.cap-card:hover{ border-color: var(--orange); box-shadow: 0 14px 28px -18px rgba(10,31,61,0.35); }
.cap-sheet{ font-family: var(--font-mono); font-size:0.7rem; color: var(--orange); letter-spacing:0.06em; }
.cap-card h3{ font-size:1.1rem; margin: 0.75rem 0 0.6rem; }
.cap-card p{ font-size:0.9rem; color: var(--ink-soft); margin-bottom:1.1rem; }
.cap-specs{ display:flex; flex-direction:column; gap:0.4rem; border-top:1px dashed var(--border); padding-top:0.9rem; }
.cap-specs li{ display:flex; justify-content:space-between; font-family: var(--font-mono); font-size:0.75rem; }
.cap-specs span{ color: var(--steel); }
.cap-specs strong{ color: var(--ink); font-weight:600; }

/* =========================================================
   Specs
   ========================================================= */
.specs{ background: var(--blueprint-800); color: var(--paper); }
.spec-table{ margin-top:2.5rem; border-top: 1px solid rgba(255,255,255,0.1); }
.spec-row{
  display:grid; grid-template-columns: 50px 220px 1fr; gap:1.5rem; align-items:baseline;
  padding: 1.15rem 0; border-bottom: 1px solid rgba(255,255,255,0.1);
}
.spec-key{ font-family: var(--font-mono); color: var(--orange); font-size:0.85rem; }
.spec-name{ font-weight:600; font-size:0.98rem; }
.spec-value{ font-family: var(--font-mono); font-size:0.85rem; color: rgba(238,241,245,0.72); }

/* =========================================================
   Build sequence (layers)
   ========================================================= */
.sequence{ background: var(--paper); }
.sequence-intro{ max-width:58ch; color: var(--ink-soft); margin-bottom:2.5rem; font-size:1.02rem; }
.layer-stack{ border-top: 1px solid var(--border); }
.layer-toggle{
  width:100%; display:flex; align-items:center; gap:1.5rem;
  background: none; border:none; border-bottom: 1px solid var(--border);
  padding: 1.35rem 0.25rem; text-align:left;
}
.layer-index{ font-family: var(--font-mono); font-size:0.8rem; color: var(--orange); width:80px; flex-shrink:0; }
.layer-name{ font-family: var(--font-display); font-weight:600; font-size:1.1rem; color: var(--ink); transition: color .2s var(--ease); }
.layer-toggle.is-active .layer-name{ color: var(--orange-dark); }
.layer-panel{
  max-height:0; overflow:hidden;
  transition: max-height .4s var(--ease), padding .4s var(--ease);
  padding: 0 0.25rem;
  border-bottom: 1px solid transparent;
}
.layer-panel.is-active{ max-height: 160px; padding: 0.25rem 0.25rem 1.5rem; border-bottom-color: var(--border); }
.layer-panel p{ color: var(--ink-soft); max-width:60ch; font-size:0.95rem; }

/* =========================================================
   Projects
   ========================================================= */
.projects{ background: var(--white); }
.project-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:1.5rem; margin-top:2.5rem; }
.project-card{ opacity:0; transform: translateY(20px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.project-card.is-visible{ opacity:1; transform: translateY(0); }
.project-swatch{ height:220px; border-radius: var(--radius); margin-bottom:1rem; }
.project-swatch--1{ background: linear-gradient(140deg, #15375F, #0A1F3D); }
.project-swatch--2{ background: linear-gradient(140deg, #FF7A47, #C6431A); }
.project-swatch--3{ background: linear-gradient(140deg, #37506A, #16232F); }
.project-swatch--4{ background: linear-gradient(140deg, #1F9D68, #124B36); }
.project-meta h3{ font-size:1.05rem; margin-bottom:0.6rem; }
.project-tags{ display:flex; gap:0.5rem; flex-wrap:wrap; }
.project-tags span{
  font-family: var(--font-mono); font-size:0.68rem; letter-spacing:0.03em;
  background: var(--paper-2); border: 1px solid var(--border); border-radius: 20px;
  padding: 0.25rem 0.65rem; color: var(--ink-soft);
}

/* =========================================================
   Reviews / field notes
   ========================================================= */
.reviews{ background: var(--paper); }
.notes-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:1.5rem; margin-top:2.5rem; }
.note-card{
  background: var(--white); border: 1px solid var(--border); border-left: 3px solid var(--orange);
  border-radius: var(--radius); padding: 1.75rem;
  opacity:0; transform: translateY(20px); transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.note-card.is-visible{ opacity:1; transform: translateY(0); }
.note-meta{ font-family: var(--font-mono); font-size:0.68rem; color: var(--orange); letter-spacing:0.06em; margin-bottom:0.9rem; }
.note-text{ font-size:0.98rem; color: var(--ink); margin-bottom:1.1rem; }
.note-by{ font-family: var(--font-mono); font-size:0.78rem; color: var(--steel); }

/* =========================================================
   Contact
   ========================================================= */
.contact{ background: var(--blueprint-900); color: var(--paper); }
.contact-inner{ display:grid; grid-template-columns: 1fr 1.15fr; gap:3.5rem; align-items:start; }
.contact-sub{ color: rgba(238,241,245,0.72); font-size:1.02rem; max-width:42ch; margin-bottom:2.25rem; }
.contact-list{ display:flex; flex-direction:column; gap:1.1rem; }
.contact-list li{ display:flex; flex-direction:column; gap:0.25rem; border-top:1px solid rgba(255,255,255,0.1); padding-top:1.1rem; }
.contact-list li:first-child{ border-top:none; padding-top:0; }
.contact-list span:first-child{ font-family: var(--font-mono); font-size:0.68rem; text-transform:uppercase; letter-spacing:0.08em; color: var(--orange); }
.contact-list a, .contact-list span + span{ font-size:1.02rem; }
.contact-list a:hover{ color: var(--orange); }

.contact-form{
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 2.25rem;
  display:flex; flex-direction:column; gap:1.25rem;
}
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:1.25rem; }
.field{ display:flex; flex-direction:column; gap:0.45rem; }
.field label{ font-family: var(--font-mono); font-size:0.72rem; color: rgba(238,241,245,0.65); }
.field input, .field select, .field textarea{
  background: var(--blueprint-800);
  border: 1.5px solid rgba(255,255,255,0.14);
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
  color: var(--paper);
  font-family: var(--font-body);
  font-size:0.95rem;
  transition: border-color .2s var(--ease);
}
.field textarea{ resize:vertical; min-height:80px; }
.field input:focus, .field select:focus, .field textarea:focus{ border-color: var(--orange); }
.field-error{ display:none; font-size:0.76rem; color:#FF8A5C; }
.field.has-error input, .field.has-error select{ border-color:#FF5722; }
.field.has-error .field-error{ display:block; }
.form-note{ font-family: var(--font-mono); font-size:0.82rem; min-height:1.2em; color: #6FCF9E; }

/* =========================================================
   Footer
   ========================================================= */
.footer{ background: var(--blueprint-900); color: var(--steel); border-top: 1px solid rgba(255,255,255,0.1); }
.footer-inner{ padding: 1.75rem 2.5rem; display:flex; justify-content:space-between; flex-wrap:wrap; gap:0.5rem; }
.footer-inner p{ font-family: var(--font-mono); font-size:0.72rem; }
.footer-dwg{ opacity:0.7; }

/* =========================================================
   Reveal (generic)
   ========================================================= */
.reveal{ opacity:0; transform: translateY(20px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-visible{ opacity:1; transform: translateY(0); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1100px){
  .hero-inner{ grid-template-columns:1fr; }
  .hero-diagram{ order:-1; max-width:520px; margin:0 auto; }
  .cap-grid{ grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 960px){
  .side-nav{ transform: translateX(-100%); transition: transform .35s var(--ease); top:0; padding-top: 5rem; }
  .side-nav.is-open{ transform: translateX(0); }
  .nav-scrim.is-open{ display:block; }
  .main{ margin-left:0; }
  .mobile-bar{ display:flex; }
  body{ padding-top: 58px; }
  .data-strip{ grid-template-columns: repeat(2,1fr); }
  .data-item{ border-bottom: 1px solid rgba(255,255,255,0.1); }
  .contact-inner{ grid-template-columns:1fr; }
}

@media (max-width: 720px){
  .section-inner{ padding: 4rem 1.5rem; }
  .hero-inner{ padding-top:3rem; }
  .hero-ctas{ flex-direction:column; align-items:stretch; }
  .cap-grid{ grid-template-columns:1fr; }
  .project-grid{ grid-template-columns:1fr; }
  .notes-grid{ grid-template-columns:1fr; }
  .form-row{ grid-template-columns:1fr; }
  .spec-row{ grid-template-columns: 36px 1fr; row-gap:0.35rem; }
  .spec-value{ grid-column: 2 / 3; }
  .data-strip{ grid-template-columns:1fr 1fr; }
  .data-item{ padding: 1.5rem 1.25rem; }
  .footer-inner{ flex-direction:column; }
}