/* ─────────────────────────────────────────────
   DOC BUDDY — Project-Specific Styles
   Import AFTER style.css and case-study.css
   ───────────────────────────────────────────── */

/* ── IBM DESIGN TOKENS ── */
:root {
  --accent:        #0043ce; /* IBM Blue 70 — AAA on white (7.8:1) */
  --accent-hover:  #002d9c; /* IBM Blue 80 */
  --accent-light:  #d0e2ff; /* IBM Blue 10 */
  --accent-mid:    #78a9ff; /* IBM Blue 30 — for elements on dark bg */
  --dark:          #161616; /* IBM Black */
  --dark-surface:  #262626; /* IBM Grey 90 */
  --dark-surface-hover: #393939; /* IBM Grey 80 */
  --text-on-dark:  #c6c6c6; /* IBM Cool Grey 30 */
  --mid:           #525252; /* IBM Cool Grey 70 */
  --light:         #f4f4f4; /* IBM Cool Grey 10 */
  --font-sans:     'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-mono:     'IBM Plex Mono', 'Courier New', monospace;
  --radius:        2px;
}

/* ── BODY / FONT OVERRIDE ── */
body {
  font-family: var(--font-sans);
}

/* ── TYPOGRAPHY OVERRIDES ── */
h1, h2, h3, h4 {
  font-family: var(--font-sans);
  line-height: 1.15;
  font-weight: 300;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.4rem, 6vw, 4.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.9rem); font-weight: 400; }
h4 { font-size: 1.05rem; font-weight: 600; letter-spacing: 0; }
em { font-style: normal; font-weight: 600; color: var(--accent-mid); }

/* ── UTILITY OVERRIDES ── */
.body-text { color: var(--mid); }
.body-text--wide { max-width: 65ch; }
.body-text strong { color: var(--dark); font-weight: 600; }

.section { padding: 5rem 0; }

.section-label {
  font-family: var(--font-mono);
  color: var(--accent);
  opacity: 1;
}

.section-title {
  font-family: var(--font-sans);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  color: var(--dark);
  margin-bottom: 1.5rem;
  max-width: 28ch;
}

.divider {
  background: var(--accent);
}
.divider--light,
.cs-section--dark .divider--light {
  background: var(--accent-light);
  opacity: 1;
}

/* ── TAG OVERRIDE ── */
.cs-tag {
  font-family: var(--font-mono);
  background: var(--accent-light);
  color: var(--accent);
  border-radius: var(--radius);
}

/* ── IMG / PLACEHOLDER OVERRIDES ── */
img, video { border-radius: var(--radius); }

.img-placeholder {
  background: var(--dark-surface);
  border: 1px dashed var(--dark-surface-hover);
  color: var(--text-on-dark);
  font-family: var(--font-mono);
  border-radius: var(--radius);
}
.img-placeholder::before { display: none; }


/* ══════════════════════════════════════════════
   SECTION VARIANTS
   ══════════════════════════════════════════════ */

.cs-section--dark { background: var(--dark); }
.cs-section--dark .section-label { color: var(--accent-mid); opacity: 1; }
.cs-section--dark .section-title { color: var(--white); }
.cs-section--dark .body-text     { color: var(--text-on-dark); }
.cs-section--dark .divider       { background: var(--accent-mid); }
.cs-section--dark-2 { background: var(--dark-surface); }
.cs-section--white  { background: var(--white); }
.cs-section--accent { background: var(--accent); }


/* ══════════════════════════════════════════════
   HERO OVERRIDES
   ══════════════════════════════════════════════ */

.cs-hero { min-height: 96vh; padding-top: 64px; }

.cs-hero__left {
  background: var(--dark);
  padding: 5rem 4rem;
  justify-content: flex-end;
  gap: 2rem;
}
.cs-hero__tag {
  font-family: var(--font-mono);
  color: var(--accent-mid);
  margin-bottom: 0.5rem;
}
.cs-hero__title { color: var(--white); font-family: var(--font-sans); font-size: clamp(2.4rem, 6vw, 4.5rem); font-weight: 300; letter-spacing: -0.02em; }
.cs-hero__title em { color: var(--accent-mid); }

.cs-meta-label { font-family: var(--font-mono); color: var(--text-on-dark); }
.cs-meta-value { color: var(--white); font-weight: 400; }

.cs-hero__right {
  background: var(--accent);
  padding: 5rem 4rem;
  justify-content: flex-end;
  align-items: flex-start;
}
.cs-hero__problem-label {
  font-family: var(--font-mono);
  color: var(--accent-light);
}
.cs-hero__problem h2 { color: var(--white); font-weight: 300; font-family: var(--font-sans); letter-spacing: -0.02em; font-size: clamp(1.5rem, 2.6vw, 2.5rem); }
.cs-hero__problem h2 strong { font-weight: 600; }


/* ══════════════════════════════════════════════
   METHOD LIST OVERRIDES
   ══════════════════════════════════════════════ */

.cs-method-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  background: none;
  border-radius: 0;
  width: auto;
  height: auto;
  min-width: 2rem;
  padding-top: 0.1rem;
}
.cs-method-text { font-size: 0.9rem; color: var(--mid); }
.cs-method-text strong { font-size: 0.95rem; font-weight: 600; }


/* ══════════════════════════════════════════════
   STRATEGY OVERRIDES
   ══════════════════════════════════════════════ */

.cs-strategy { grid-template-columns: 280px 1fr; }
.cs-strategy__cards { gap: 2rem; background: none; }
.cs-strategy__card {
  background: var(--white);
  border-left: 3px solid var(--accent);
  border-radius: 0;
  padding: 1.75rem;
  gap: 1.5rem;
}
.cs-section--dark .cs-strategy__card { background: var(--dark-surface); }
.cs-strategy__icon { font-size: 1.5rem; width: auto; height: auto; background: none; border-radius: 0; }
.cs-strategy__card h3 { font-size: 1.05rem; font-weight: 600; }


/* ══════════════════════════════════════════════
   PAIN CARDS OVERRIDES
   ══════════════════════════════════════════════ */

.cs-pain-grid { background: none; gap: 1.5px; }
.cs-pain-card {
  background: var(--dark-surface);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 2rem;
}
.cs-pain-card:hover { background: var(--dark-surface-hover); }
.cs-pain-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--accent-mid);
  position: static;
  font-weight: 400;
}
.cs-pain-title {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
}
.cs-pain-desc { font-size: 0.9rem; color: var(--text-on-dark); }
.cs-pain-quote {
  font-family: var(--font-sans);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--accent-light);
  border-left: none;
  border-top: 1px solid var(--dark-surface-hover);
  padding-left: 0;
  padding-top: 1rem;
  margin-top: auto;
}


/* ══════════════════════════════════════════════
   BEFORE / AFTER OVERRIDES
   (label is an overlay, not a block above image)
   ══════════════════════════════════════════════ */

.cs-ba__col { position: relative; }
.cs-ba__col img { width: 100%; height: 100%; object-fit: cover; }
.cs-ba__label {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: rgba(0,0,0,0.7);
  color: var(--white);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius);
  opacity: 1;
  margin: 0;
}


/* ══════════════════════════════════════════════
   BLOCKQUOTE OVERRIDE
   ══════════════════════════════════════════════ */

blockquote {
  border-left-color: var(--accent);
  background: none;
  max-width: 60ch;
}
.cs-section--dark blockquote { color: var(--text-on-dark); border-color: var(--accent-mid); }


/* ══════════════════════════════════════════════
   IMAGE GRIDS (doc-buddy specific)
   ══════════════════════════════════════════════ */

.cs-img-caption {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-on-dark);
  margin-top: 0.5rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}


/* ══════════════════════════════════════════════
   VIDEO EMBED (YouTube / responsive iframe)
   ══════════════════════════════════════════════ */

.cs-video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
}
.cs-video-embed iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
}


/* ══════════════════════════════════════════════
   TESTIMONIAL OVERRIDES
   ══════════════════════════════════════════════ */

.cs-testimonial--blue  { background: var(--accent); }
.cs-testimonial--blue .cs-testimonial__quote { color: var(--white); font-size: clamp(1.5rem, 2.5vw, 2.5rem); line-height: 1.3; }
.cs-testimonial--blue .cs-testimonial__attr  { color: rgba(255,255,255,0.6); }
.cs-testimonial__quote {
  font-family: var(--font-sans);
  font-style: normal;
  margin-bottom: 0;
}
.cs-testimonial__attr {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  margin-top: 1.5rem;
  margin-bottom: 0;
}
.cs-testimonial--light .cs-testimonial__quote { font-size: 1.2rem; }
.cs-testimonial--light .cs-testimonial__attr  { color: var(--mid); }
.cs-testimonial--blue  .cs-testimonial__attr { color: var(--accent-light); }


/* ── UTILITY CLASSES ── */
.cs-hero__accent-word  { color: var(--accent-mid); font-weight: 600; }
.cs-strong-white       { color: var(--white); font-weight: 600; }
.cs-callout-text       { font-size: 1.6rem; color: var(--white); line-height: 1.3; margin-top: 0.5rem; }
.cs-annotation-grid    { grid-template-columns: 1fr 1fr; align-items: start; }
.img-full              { width: 100%; display: block; }
.footer-note           { margin-top: 0.5rem; font-size: 0.7rem; opacity: 0.5; }

/* ══════════════════════════════════════════════
   OUTCOMES OVERRIDES
   ══════════════════════════════════════════════ */

.cs-outcomes { background: var(--light); padding: 5rem 0; }
.outcomes-main  { grid-template-columns: 1fr 2fr; }
.outcomes-quotes { grid-template-columns: 1fr 1fr; }
.cs-outcomes .section-label { color: var(--mid); }
.cs-outcomes .section-title { color: var(--dark); }
.cs-outcomes-grid { gap: 1.5px; }
.cs-outcome-card {
  background: rgba(255,255,255,0.12);
  border-top: 2px solid rgba(255,255,255,0.3);
  border-radius: 0;
}
.cs-outcome-card h4 {
  color: var(--white);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  font-weight: 400;
  margin-bottom: 0.75rem;
}
.cs-outcome-card p { color: rgba(255,255,255,0.8); font-size: 1rem; line-height: 1.65; }
.cs-outcome-card strong { color: var(--white); }


/* ══════════════════════════════════════════════
   TEXT UTILITIES
   ══════════════════════════════════════════════ */

.cs-label-on-dark { color: var(--accent-mid) !important; opacity: 1 !important; }


/* ── INSIGHTS SCROLL EFFECT (desktop only) ── */
#insights-section  { position: relative; overflow: hidden; }
.insights-grid     { grid-template-columns: 2fr 1fr; }
.insights-text     { align-self: start; }
.insights-img-col  { position: relative; align-self: stretch; }
.insights-img      { position: absolute; top: 0; width: 100%; display: block; will-change: transform; }

/* ══════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════ */

@media (max-width: 768px) {
  .cs-hero { grid-template-columns: 1fr; min-height: auto; }
  .cs-hero__left { justify-content: flex-start; }
  .cs-two-col { grid-template-columns: 1fr; gap: 2rem; }
  .cs-img-grid-3,
  .cs-img-grid-2 { grid-template-columns: 1fr; }
  .cs-strategy { grid-template-columns: 1fr; gap: 2rem; }
  .cs-ba,
  .cs-ba--2-3 { grid-template-columns: 1fr; }
  .cs-outcomes-grid { grid-template-columns: 1fr; }

  /* Insights — stack columns, disable scroll effect */
  .insights-grid { grid-template-columns: 1fr; }
  .insights-text { align-self: auto; }
  .insights-img-col { align-self: auto; }
  .insights-img {
    position: relative;
    top: auto;
    width: auto;
    max-width: 80%;
    display: block;
    margin: 0 auto;
    transform: none !important; /* override JS inline style */
  }

  /* Outcomes — each quote full width */
  .outcomes-main  { grid-template-columns: 1fr; }
  .outcomes-quotes { grid-template-columns: 1fr; }
}