/* ==========================================================================
   SKK CONSULTANTS — common.css
   Design tokens, reset, base typography, buttons, forms.
   Loaded first on every page.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. TOKENS
   -------------------------------------------------------------------------- */
:root {
  /* Brand palette */
  --c-brand:        #A52A2A;
  --c-brand-dark:   #7E1F1F;
  --c-brand-light:  #C24141;

  --c-charcoal:     #202020;
  --c-slate:        #343A40;
  --c-sand:         #D6B48A;
  --c-concrete:     #E8E6E3;
  --c-offwhite:     #F7F6F3;
  --c-white:        #FFFFFF;

  /* Derived neutrals */
  --c-ink:          #202020;
  --c-ink-muted:    #5A6169;
  --c-ink-faint:    #8A9099;
  --c-rule:         #D8D5D0;
  --c-rule-dark:    rgba(255, 255, 255, 0.14);

  /* Surfaces */
  --s-page:         var(--c-offwhite);
  --s-raised:       var(--c-white);
  --s-sunken:       var(--c-concrete);
  --s-dark:         var(--c-charcoal);
  --s-dark-2:       #171717;

  /* Type */
  --f-display: "Archivo", "Archivo Narrow", "Helvetica Neue", Arial, sans-serif;
  --f-body:    "IBM Plex Sans", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Type scale — 1.25 minor third, fluid */
  --t-xs:   0.75rem;
  --t-sm:   0.8125rem;
  --t-base: 1rem;
  --t-md:   clamp(1.0625rem, 0.98rem + 0.35vw, 1.1875rem);
  --t-lg:   clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --t-xl:   clamp(1.5rem, 1.25rem + 1.1vw, 2.125rem);
  --t-2xl:  clamp(1.875rem, 1.4rem + 2vw, 3rem);
  --t-3xl:  clamp(2.375rem, 1.6rem + 3.4vw, 4.25rem);
  --t-4xl:  clamp(2.75rem, 1.5rem + 5.4vw, 6rem);

  /* Spacing */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;
  --sp-9: 6rem;
  --sp-10: 8rem;

  /* Section rhythm */
  --section-y: clamp(3.5rem, 2rem + 6vw, 7rem);

  /* Layout */
  --wrap:      1320px;
  --wrap-text: 68ch;
  --gutter:    clamp(1.125rem, 0.6rem + 2.4vw, 3rem);
  --header-h:  76px;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur:  0.4s;

  /* Elevation — used sparingly, industrial not fluffy */
  --shadow-1: 0 1px 2px rgba(32, 32, 32, 0.08);
  --shadow-2: 0 18px 44px -22px rgba(32, 32, 32, 0.45);
}

/* --------------------------------------------------------------------------
   2. RESET
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  background: var(--s-page);
  color: var(--c-ink);
  font-family: var(--f-body);
  font-size: var(--t-base);
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; }
li { list-style: none; }

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

img {
  height: auto;
  background-color: var(--c-concrete);
  color: transparent;
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button { background: none; border: 0; cursor: pointer; }

address { font-style: normal; }

hr {
  border: 0;
  border-top: 1px solid var(--c-rule);
  margin: var(--sp-6) 0;
}

/* --------------------------------------------------------------------------
   3. TYPOGRAPHY
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5 {
  font-family: var(--f-display);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h1 { font-size: var(--t-3xl); }
h2 { font-size: var(--t-2xl); }
h3 { font-size: var(--t-xl); }
h4 { font-size: var(--t-lg); }
h5 { font-size: var(--t-md); letter-spacing: -0.005em; }

p { text-wrap: pretty; }

strong { font-weight: 600; }

/* Section eyebrow: a short red rule + small tracked label.
   The brief specifies #A52A2A for "small labels" and "decorative lines". */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--f-body);
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-brand);
  margin-bottom: var(--sp-4);
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--c-brand);
  flex: none;
}

.eyebrow--center { justify-content: center; }
.eyebrow--light { color: var(--c-sand); }
.eyebrow--light::before { background: var(--c-sand); }

/* Section heading block */
.section-head { max-width: 44rem; margin-bottom: var(--sp-7); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head p {
  margin-top: var(--sp-4);
  color: var(--c-ink-muted);
  font-size: var(--t-md);
  max-width: 60ch;
}
.section-head--center p { margin-inline: auto; }

.lede {
  font-size: var(--t-md);
  color: var(--c-ink-muted);
  max-width: var(--wrap-text);
}

/* --------------------------------------------------------------------------
   4. BUTTONS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.95rem 1.7rem;
  border: 1.5px solid transparent;
  font-family: var(--f-body);
  font-size: var(--t-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.btn--primary {
  background: var(--c-brand);
  border-color: var(--c-brand);
  color: var(--c-white);
}
.btn--primary:hover,
.btn--primary:focus-visible { background: var(--c-brand-dark); border-color: var(--c-brand-dark); }

.btn--ghost {
  border-color: var(--c-charcoal);
  color: var(--c-charcoal);
}
.btn--ghost:hover,
.btn--ghost:focus-visible { background: var(--c-charcoal); color: var(--c-white); }

.btn--light {
  border-color: rgba(255, 255, 255, 0.55);
  color: var(--c-white);
}
.btn--light:hover,
.btn--light:focus-visible { background: var(--c-white); color: var(--c-charcoal); border-color: var(--c-white); }

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

/* Text link with a rule that grows on hover */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--t-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-brand);
  padding-bottom: 2px;
  border-bottom: 1.5px solid currentColor;
  transition: color var(--dur) var(--ease);
}
.link-arrow:hover { color: var(--c-brand-dark); }
.link-arrow--light { color: var(--c-sand); }
.link-arrow--light:hover { color: var(--c-white); }

.icon { width: 1em; height: 1em; flex: none; fill: none; stroke: currentColor; stroke-width: 2; }

/* --------------------------------------------------------------------------
   5. FORM PRIMITIVES
   -------------------------------------------------------------------------- */
.field { display: flex; flex-direction: column; gap: 0.4rem; }

.field label {
  font-size: var(--t-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-slate);
}

.field .req { color: var(--c-brand); }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.8rem 0.9rem;
  background: var(--c-white);
  border: 1px solid var(--c-rule);
  border-radius: 0;
  font-size: var(--t-base);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.field textarea { resize: vertical; min-height: 9rem; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--c-brand);
  box-shadow: inset 0 -2px 0 0 var(--c-brand);
}

.field .error {
  min-height: 1.15rem;
  font-size: var(--t-xs);
  color: var(--c-brand);
}

.field.is-invalid input,
.field.is-invalid select,
.field.is-invalid textarea { border-color: var(--c-brand); }

/* --------------------------------------------------------------------------
   6. ACCESSIBILITY
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 3px solid var(--c-brand);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translate(-50%, -110%);
  z-index: 200;
  background: var(--c-brand);
  color: var(--c-white);
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: translate(-50%, 0); }

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

@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;
  }
}

/* --------------------------------------------------------------------------
   7. PRINT
   -------------------------------------------------------------------------- */
@media print {
  .site-header, .site-footer, .hero, .cta-band { display: none; }
  body { background: #fff; }
}

/* --------------------------------------------------------------------------
   8. ICON SPRITE
   The <symbol> definitions live in the markup; the carrier <svg> must not
   occupy space or be announced.
   -------------------------------------------------------------------------- */
.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}