/* ============================================================
   IPETS Engineering & Technical Services — Base Styles
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  /* ---- Color tokens ---- */
  --ink:        #121B2A;   /* primary navy — headlines, CTA buttons */
  --ink-2:      #1E2D45;   /* secondary navy — gradients, card accents */
  --paper:      #FFFFFF;
  --mist:       #F3F4F6;   /* alt section background */
  --mist-2:     #ECEEF1;
  --steel:      #5B6472;   /* secondary text */
  --steel-light:#8B93A1;
  --ember:      #C9702E;   /* burnt amber accent */
  --ember-dark: #A85A22;
  --line:       #E4E6EA;
  --line-dark:  rgba(255,255,255,0.12);
  --black-band: #0D1119;   /* stats band background */
  --success:    #2E7D4F;
  --error:      #B23A2E;

  /* ---- Type ---- */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* ---- Motion ---- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 220ms;
  --dur-med: 420ms;
  --dur-slow: 900ms;

  /* ---- Layout ---- */
  --max-width: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
}

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

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

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

body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul, ol{ margin: 0; padding: 0; list-style: none; }

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

input, textarea, select{ font-family: inherit; font-size: inherit; }

h1, h2, h3, h4{
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0;
  letter-spacing: -0.01em;
}

p{ margin: 0; }

::selection{ background: var(--ember); color: var(--paper); }

:focus-visible{
  outline: 2px solid var(--ember);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---- Layout helpers ---- */
.container{
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section{
  padding: clamp(64px, 9vw, 128px) 0;
}

.section--tight{ padding: clamp(40px, 6vw, 72px) 0; }
.section--alt{ background: var(--mist); }
.section--dark{ background: var(--black-band); color: var(--paper); }

.eyebrow{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ember);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.eyebrow::before{
  content: '';
  width: 20px;
  height: 1.5px;
  background: var(--ember);
  display: inline-block;
}

h1{ font-size: clamp(2.4rem, 5vw, 4.1rem); }
h2{ font-size: clamp(1.9rem, 3.4vw, 2.9rem); }
h3{ font-size: clamp(1.25rem, 2vw, 1.6rem); }

.lede{
  font-size: clamp(1.02rem, 1.4vw, 1.2rem);
  color: var(--steel);
  max-width: 62ch;
}

.section-head{
  max-width: 720px;
  margin-bottom: clamp(36px, 5vw, 56px);
}
.section-head.center{ margin-left: auto; margin-right: auto; text-align: center; }

/* ---- Buttons ---- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1.5px solid transparent;
  transition: transform var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-default),
              box-shadow var(--dur-fast) var(--ease-default),
              border-color var(--dur-fast) var(--ease-default),
              color var(--dur-fast) var(--ease-default);
  white-space: nowrap;
}
.btn svg{ width: 16px; height: 16px; transition: transform var(--dur-fast) var(--ease-out); }

.btn--primary{
  background: var(--ink);
  color: var(--paper);
}
.btn--primary:hover{
  background: var(--ember);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -12px rgba(201,112,46,0.55);
}
.btn--primary:active{ transform: translateY(0); box-shadow: none; }
.btn--primary:hover svg{ transform: translateX(3px); }

.btn--ghost{
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn--ghost:hover{
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-2px);
}

.btn--on-dark{
  background: var(--paper);
  color: var(--ink);
}
.btn--on-dark:hover{
  background: var(--ember);
  color: var(--paper);
  transform: translateY(-2px);
}

.btn:disabled{ opacity: 0.55; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

/* ---- Card base ---- */
.card{
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-default),
              border-color var(--dur-fast) var(--ease-default);
}
.card:hover{
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 24px 48px -20px rgba(18,27,42,0.18);
  border-color: rgba(18,27,42,0.14);
}

/* ---- Utility ---- */
.text-center{ text-align: center; }
.mono{ font-family: var(--font-mono); }
.visually-hidden{
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap;
}