/* ============================================================
   Bluebird Infotech — Design System (plain CSS, no React/runtime)
   Ported faithfully from the original design-system tokens.
   ============================================================ */

/* ---------- FONTS ---------- */
@import url("https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,300..700&family=JetBrains+Mono:wght@400;500;600&display=swap");

:root {
  --font-sans: "Inter", "SF Pro Display", system-ui, -apple-system, "Helvetica Neue", helvetica, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, menlo, monospace;

  /* ---- Color: base ---- */
  --black: #000000;
  --white: #ffffff;
  --color-primary: var(--black);
  --color-on-primary: var(--white);
  --color-accent-magenta: #e5468a;

  /* ---- Color: surface ---- */
  --color-canvas: var(--white);
  --color-inverse-canvas: #000000;
  --color-surface-soft: #f5f4f2;
  --color-hairline: #e3e1dd;
  --color-hairline-soft: #eeece8;

  /* ---- Color: signature blocks ---- */
  --color-block-lime: #d6f24f;
  --color-block-lilac: #d4c5f7;
  --color-block-cream: #f3ecd8;
  --color-block-mint: #c3eed6;
  --color-block-pink: #f6d3e3;
  --color-block-coral: #f3a587;
  --color-block-navy: #211c4e;

  /* ---- Color: text ---- */
  --color-ink: var(--black);
  --color-inverse-ink: var(--white);
  --color-on-inverse-soft: rgba(255, 255, 255, 0.16);

  /* ---- Color: semantic ---- */
  --color-success: #1f8a4c;
  --color-overlay-scrim: rgba(0, 0, 0, 0.6);

  /* ---- Type: size ---- */
  --fs-display-xl: 86px;
  --fs-display-lg: 64px;
  --fs-headline: 26px;
  --fs-subhead: 26px;
  --fs-card-title: 24px;
  --fs-body-lg: 20px;
  --fs-body: 18px;
  --fs-body-sm: 16px;
  --fs-link: 20px;
  --fs-button: 20px;
  --fs-eyebrow: 18px;
  --fs-caption: 12px;

  /* ---- Type: weight ---- */
  --fw-320: 320;
  --fw-330: 330;
  --fw-340: 340;
  --fw-400: 400;
  --fw-450: 450;
  --fw-480: 480;
  --fw-540: 540;
  --fw-700: 700;

  /* ---- Type: line-height ---- */
  --lh-display: 1;
  --lh-display-lg: 1.1;
  --lh-tight: 1.3;
  --lh-snug: 1.35;
  --lh-body: 1.45;
  --lh-relaxed: 1.4;

  /* ---- Type: tracking ---- */
  --ls-display-xl: -1.72px;
  --ls-display-lg: -0.96px;
  --ls-headline: -0.26px;
  --ls-body: -0.26px;
  --ls-body-lg: -0.14px;
  --ls-link: -0.1px;
  --ls-eyebrow: 0.54px;
  --ls-caption: 0.6px;

  /* ---- Spacing ---- */
  --space-hair: 1px;
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;
  --space-section: 96px;
  --container-max: 1280px;
  --gutter-desktop: 48px;
  --gutter-mobile: 24px;

  /* ---- Radius ---- */
  --radius-xs: 2px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 50px;
  --radius-full: 9999px;

  /* ---- Elevation ---- */
  --elevation-0: none;
  --elevation-1: 0 0 0 1px var(--color-hairline);
  --elevation-2: 0 4px 16px rgba(0, 0, 0, 0.06);
  --elevation-3: 0 24px 64px rgba(0, 0, 0, 0.24);
  --focus-ring: 0 0 0 3px rgba(0, 0, 0, 0.18);

  font-feature-settings: "kern" 1;
}

/* ---------- RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--color-canvas); color: var(--color-ink); overflow-x: hidden; font-family: var(--font-sans); }
img { max-width: 100%; display: block; }
a { color: inherit; }
button { font-family: inherit; }

/* ---------- TYPE ROLE SHORTHANDS ---------- */
.t-display-xl { font: var(--fw-340) var(--fs-display-xl)/var(--lh-display) var(--font-sans); letter-spacing: var(--ls-display-xl); }
.t-display-lg { font: var(--fw-340) var(--fs-display-lg)/var(--lh-display-lg) var(--font-sans); letter-spacing: var(--ls-display-lg); }
.t-headline   { font: var(--fw-540) var(--fs-headline)/var(--lh-snug) var(--font-sans); letter-spacing: var(--ls-headline); }
.t-subhead    { font: var(--fw-340) var(--fs-subhead)/var(--lh-snug) var(--font-sans); letter-spacing: var(--ls-headline); }
.t-card-title { font: var(--fw-700) var(--fs-card-title)/1.45 var(--font-sans); }
.t-body-lg    { font: var(--fw-330) var(--fs-body-lg)/var(--lh-relaxed) var(--font-sans); letter-spacing: var(--ls-body-lg); }
.t-body       { font: var(--fw-320) var(--fs-body)/var(--lh-body) var(--font-sans); letter-spacing: var(--ls-body); }
.t-body-sm    { font: var(--fw-330) var(--fs-body-sm)/var(--lh-body) var(--font-sans); letter-spacing: var(--ls-body-lg); }
.t-link       { font: var(--fw-480) var(--fs-link)/var(--lh-relaxed) var(--font-sans); letter-spacing: var(--ls-link); }
.t-eyebrow    { font: var(--fw-400) var(--fs-eyebrow)/var(--lh-tight) var(--font-mono); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; }
.t-caption    { font: var(--fw-400) var(--fs-caption)/1 var(--font-mono); letter-spacing: var(--ls-caption); text-transform: uppercase; }

/* ---------- BUTTONS (ported from Button.jsx) ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-xs);
  font-family: var(--font-sans); font-size: var(--fs-button); font-weight: var(--fw-480);
  line-height: var(--lh-relaxed); letter-spacing: var(--ls-link);
  border: none; cursor: pointer; text-decoration: none; white-space: nowrap; min-height: 44px;
  transition: transform 120ms ease, background-color 120ms ease, opacity 120ms ease;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(0.97); }
.btn-primary   { background: var(--color-primary); color: var(--color-on-primary); padding: 10px 20px; border-radius: var(--radius-pill); }
.btn-secondary { background: var(--color-canvas); color: var(--color-ink); padding: 8px 18px 10px; border-radius: var(--radius-pill); box-shadow: var(--elevation-1); }
.btn-tertiary  { background: transparent; color: var(--color-ink); padding: var(--space-xs) var(--space-sm); border-radius: var(--radius-full); min-height: auto; }
.btn-magenta   { background: var(--color-accent-magenta); color: var(--color-on-primary); padding: 10px 18px; border-radius: var(--radius-pill); }
.btn-full      { width: 100%; }

/* ---------- ICON BUTTON (ported from IconButton.jsx) ---------- */
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: var(--radius-full); border: none; cursor: pointer;
  transition: transform 120ms ease, background-color 120ms ease; -webkit-tap-highlight-color: transparent; flex-shrink: 0;
  background: var(--color-surface-soft); color: var(--color-ink);
}
.icon-btn:active { transform: scale(0.92); }
.icon-btn-inverse { background: var(--color-on-inverse-soft); color: var(--color-inverse-ink); }
.icon-btn-sm { width: 36px; height: 36px; }

/* ---------- FORM INPUT (ported from Input.jsx) ---------- */
.form-field { margin-bottom: var(--space-lg); }
.form-label { font-family: var(--font-sans); font-size: var(--fs-body-sm); font-weight: var(--fw-480); display: block; margin-bottom: var(--space-xs); color: var(--color-ink); }
.form-input, .form-select, .form-textarea {
  width: 100%; min-height: 48px; padding: 0 var(--space-lg);
  font-family: var(--font-sans); font-size: var(--fs-body-sm); color: var(--color-ink);
  background: var(--color-canvas); border: 1px solid var(--color-hairline); border-radius: var(--radius-md);
  outline: none; transition: box-shadow 120ms ease;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { box-shadow: var(--focus-ring); }
.form-select { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23000' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; }
.form-textarea { min-height: 150px; padding: var(--space-md) var(--space-lg); resize: vertical; line-height: 1.6; }

/* ---------- ELECTROW / PROMO ---------- */
.promo-banner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-lg); flex-wrap: wrap; background: var(--color-block-lilac); color: var(--color-ink); border-radius: var(--radius-md); padding: var(--space-md) var(--space-lg); }

/* ---------- LAYOUT ---------- */
.ctr { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--gutter-desktop); }

/* ---------- SCROLL REVEAL ---------- */
[data-reveal] { opacity: 0; transform: translateY(32px); transition: opacity .72s cubic-bezier(.22,1,.36,1), transform .72s cubic-bezier(.22,1,.36,1); }
[data-reveal].revealed { opacity: 1; transform: translateY(0); }
[data-reveal="left"] { transform: translateX(-32px); }
[data-reveal="left"].revealed { transform: translateX(0); }
[data-reveal="right"] { transform: translateX(32px); }
[data-reveal="right"].revealed { transform: translateX(0); }
[data-delay="1"]{transition-delay:.08s} [data-delay="2"]{transition-delay:.16s}
[data-delay="3"]{transition-delay:.24s} [data-delay="4"]{transition-delay:.32s}
[data-delay="5"]{transition-delay:.40s} [data-delay="6"]{transition-delay:.48s}
[data-delay="7"]{transition-delay:.56s} [data-delay="8"]{transition-delay:.64s}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* ---------- KEYFRAMES ---------- */
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.2} }
@keyframes float-a { 0%,100%{transform:translateY(0) rotate(-2deg)} 50%{transform:translateY(-18px) rotate(-2deg)} }
@keyframes float-b { 0%,100%{transform:translateY(0) rotate(3deg)} 50%{transform:translateY(-14px) rotate(3deg)} }
@keyframes float-c { 0%,100%{transform:translateY(-5px) rotate(-1deg)} 50%{transform:translateY(10px) rotate(-1deg)} }
@keyframes bb-marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .marquee-track { animation: none !important; } }

/* ---------- NAV ---------- */
.site-nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,.9); backdrop-filter: blur(20px) saturate(1.5); border-bottom: 1px solid var(--color-hairline); height: 64px; display: flex; align-items: center; }
.nav-inner { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--gutter-desktop); width: 100%; display: flex; align-items: center; }
.nav-logo { display: flex; align-items: center; text-decoration: none; color: var(--color-ink); margin-right: var(--space-xl); }
.nav-logo img { height: 36px; width: auto; }
.nav-links { display: flex; align-items: center; gap: var(--space-xl); margin-left: auto; }
.nav-link { font-size: var(--fs-body-sm); font-weight: var(--fw-480); color: var(--color-ink); text-decoration: none; opacity: .72; transition: opacity .2s; letter-spacing: var(--ls-body-lg); }
.nav-link:hover, .nav-link.active { opacity: 1; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; z-index: 200; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--color-ink); border-radius: 2px; transition: all .3s; }
.mobile-menu { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: white; z-index: 150; flex-direction: column; align-items: center; justify-content: center; gap: 32px; }
.mobile-menu.open { display: flex; }
.mobile-menu a { font-size: 28px; font-weight: 700; color: var(--color-ink); text-decoration: none; letter-spacing: -.5px; }
.mobile-menu .btn-primary { background: var(--color-ink); color: white; padding: 14px 32px; font-size: 18px; }

/* ---------- MARQUEE ---------- */
.marquee-strip { background: var(--color-inverse-canvas); color: var(--color-inverse-ink); height: 36px; overflow: hidden; display: flex; align-items: center; }
.marquee-track { display: flex; align-items: center; gap: var(--space-xxl); white-space: nowrap; padding-left: var(--space-xxl); animation: bb-marquee 28s linear infinite; }
.marquee-track span { font-family: var(--font-sans); font-size: var(--fs-body-sm); font-weight: var(--fw-480); letter-spacing: var(--ls-body-lg); opacity: .92; }

/* ---------- SERVICE / CARD HOVER ---------- */
.svc-card { transition: transform .3s ease, box-shadow .3s ease; cursor: pointer; }
.svc-card:hover { transform: translateY(-6px); box-shadow: 0 20px 48px rgba(0,0,0,.09); }
.svc-card:hover .svc-arrow { transform: translateX(4px); }
.svc-arrow { transition: transform .2s ease; display: inline-block; }

.proj-card { overflow: hidden; cursor: pointer; }
.proj-thumb { transition: transform .5s cubic-bezier(.22,1,.36,1); }
.proj-card:hover .proj-thumb { transform: scale(1.04); }

.why-card { transition: transform .25s ease; }
.why-card:hover { transform: translateY(-5px); }

.tech-chip { transition: transform .2s ease; cursor: default; }
.tech-chip:hover { transform: translateY(-3px); }

.ind-pill { transition: background .2s, color .2s, transform .2s; cursor: pointer; }
.ind-pill:hover { background: var(--color-ink) !important; color: white !important; transform: translateY(-2px); }

.testi-card { transition: transform .3s ease; }
.testi-card:hover { transform: translateY(-5px); }

.proc-step { transition: transform .25s ease; }
.proc-step:hover { transform: translateX(8px); }

.hero-vis { transition: transform .5s cubic-bezier(.22,1,.36,1); }

/* ---------- FAQ ---------- */
.faq-row { border-bottom: 1px solid rgba(0,0,0,.1); }
.faq-q { display: flex; align-items: center; justify-content: space-between; padding: var(--space-lg) 0; cursor: pointer; gap: var(--space-xl); background: none; border: none; width: 100%; text-align: left; font: inherit; color: inherit; }
.faq-q:hover { opacity: .75; }
.faq-icon { display: inline-block; transition: transform .3s ease; font-size: 28px; font-weight: 200; line-height: 1; flex-shrink: 0; }
.faq-row.open .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .42s cubic-bezier(.4,0,.2,1); }
.faq-row.open .faq-answer { max-height: 320px; }
.faq-answer p { font-family: var(--font-sans); font-size: var(--fs-body); font-weight: var(--fw-320); line-height: 1.55; opacity: .7; padding-bottom: 28px; margin: 0; }

/* ---------- FOOTER ---------- */
.ft-link { color: rgba(255,255,255,.5); text-decoration: none; font-size: var(--fs-body-sm); font-weight: var(--fw-330); display: block; margin-bottom: 10px; transition: color .2s; }
.ft-link:hover { color: white; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: flex; margin-left: auto; }
  .proc-cols { flex-direction: column !important; gap: 40px !important; }
  .proc-cols > div:first-child { width: 100% !important; }
  .hero-cols { flex-direction: column !important; gap: 32px !important; min-height: auto !important; padding-top: 32px !important; }
  .hero-vis-wrap { display: none !important; }
  .hero-sec { padding-bottom: 48px !important; }
  .about-cols { flex-direction: column !important; gap: 0 !important; }
  .about-cols > div:first-child { width: 100% !important; height: 320px !important; }
  #solar-canvas { width: 100% !important; height: 320px !important; }
  .svc-grid { grid-template-columns: 1fr 1fr !important; }
  .proc-wrap { flex-direction: column !important; gap: 40px !important; }
  .proc-wrap > div:first-child { width: 100% !important; }
  .proj-grid { grid-template-columns: 1fr !important; }
  .stats-grid { grid-template-columns: 1fr 1fr !important; }
  .why-grid { grid-template-columns: 1fr 1fr !important; }
  #testi-track > div { min-width: calc(100vw - 48px) !important; max-width: calc(100vw - 48px) !important; }
  .faq-wrap { flex-direction: column !important; }
  .ft-grid { grid-template-columns: 1fr 1fr !important; }
  .tech-wrap { flex-direction: column !important; }
  .contact-cols { flex-direction: column !important; }
  .contact-cols > div:last-child { width: 100% !important; }
  .form-grid { grid-template-columns: 1fr !important; }
}
@media (max-width: 600px) {
  .hero-sec h1 { font-size: 42px !important; letter-spacing: -1.5px !important; line-height: 1 !important; }
  .hero-sec p { font-size: 15px !important; }
  .hero-sec .stats-row { gap: 16px !important; }
  .about-cols > div:first-child { height: 260px !important; }
  #solar-canvas { height: 260px !important; }
  .svc-grid { grid-template-columns: 1fr !important; }
  .stats-grid { grid-template-columns: 1fr !important; }
  .why-grid { grid-template-columns: 1fr !important; }
  .ft-grid { grid-template-columns: 1fr !important; }
  .ctr { padding-left: 20px !important; padding-right: 20px !important; }
  .faq-wrap { gap: 32px !important; }
  .faq-wrap > div:first-child { width: 100% !important; }
}

/* ---------- ACCESSIBILITY ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--color-ink); outline-offset: 2px;
}