/* ============================================================
   SAI LANGUAGE SERVICES — STYLESHEET
   External CSS file — linked from index.html
   ============================================================ */

/* ── CSS Variables ── */
:root {
  --primary:                  #a9162d;
  --primary-container:        #cc3343;
  --primary-fixed-dim:        #ffb3b3;
  --surface:                  #ffffff;
  --surface-low:              #fafbfc;
  --surface-container:        #f1f3f6;
  --surface-container-high:   #ebedf0;
  --surface-container-highest:#e1e2e5;
  --on-surface:               #111827;
  --on-surface-variant:       #374151;
  --slate-100:                #f1f5f9;
  --slate-200:                #e2e8f0;
  --slate-400:                #94a3b8;
  --slate-500:                #64748b;
  --slate-600:                #475569;
  --slate-700:                #374151;
  --slate-900:                #0f172a;
  --dark-bg:                  #0f172a;
  --dark-bg-2:                #1e293b;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--surface);
  color: var(--on-surface);
  -webkit-font-smoothing: antialiased;
  moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--primary-fixed-dim);
  color: #400009;
}

.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

/* ============================================================
   UTILITY / GLOBAL HELPERS
   ============================================================ */
.text-primary-brand   { color: var(--primary) !important; }
.bg-primary-brand     { background-color: var(--primary) !important; }
.bg-surface-soft      { background-color: rgba(248, 250, 252, 0.5); }
.bg-cta-section       { background-color: #f8fafc; }

/* Label / tag text */
.label-tag {
  font-size: 0.65rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--primary);
}

/* Small section meta label (grey) */
.section-label {
  font-size: 0.6rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--slate-400);
}

/* ── Triangle shapes ── */
.triangle-bullet {
  clip-path: polygon(0 0, 0% 100%, 100% 0);
  width: 12px;
  height: 12px;
  min-width: 12px;
  background-color: var(--primary);
  display: inline-block;
  flex-shrink: 0;
}

.triangle-accent {
  clip-path: polygon(0 0, 0% 100%, 100% 0);
}

/* Decorative "before" accent for section headers */
.section-accent { position: relative; }
.section-accent::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 0;
  width: 24px;
  height: 24px;
  background-color: var(--primary);
  clip-path: polygon(0 0, 0% 100%, 100% 0);
  opacity: 0.15;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.sai-navbar {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-100);
}

/* Brand logo */
.sai-navbar__logo {
  height: 2.25rem;
  width: auto;
}

/* Brand text */
.sai-navbar__brand-text {
  font-size: 1.1rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--slate-900);
}

/* Nav links */
.sai-navbar__link {
  font-size: 0.875rem;
  font-weight: 700;
  color: #4b5563;
  text-decoration: none;
  transition: color 0.2s;
  padding-bottom: 0;
}
.sai-navbar__link:hover {
  color: var(--primary);
}
.sai-navbar__link.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
  padding-bottom: 2px;
}

/* Contact Us text button */
.sai-navbar__contact-btn {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--slate-700);
  cursor: pointer;
  transition: color 0.2s;
}
.sai-navbar__contact-btn:hover { color: var(--primary); }

/* Hamburger toggler */
.navbar-toggler { border: none; padding: 0.25rem; }
.navbar-toggler:focus { box-shadow: none; }
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%230f172a' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ============================================================
   BUTTONS
   ============================================================ */

/* Primary red button */
.btn-primary-custom {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 0;
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.75rem 1.5rem;
  transition: background 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}
.btn-primary-custom:hover { background: var(--primary-container); color: #fff; }

/* Hero large primary button */
.btn-primary-hero {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 0;
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 1.1rem 2.5rem;
  transition: background 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
}
.btn-primary-hero:hover { background: var(--primary-container); color: #fff; }

/* Secondary grey button */
.btn-secondary-hero {
  background: var(--slate-100);
  color: var(--slate-900);
  border: none;
  border-radius: 0;
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 1.1rem 2.5rem;
  transition: background 0.2s;
  cursor: pointer;
}
.btn-secondary-hero:hover { background: var(--slate-200); color: var(--slate-900); }

/* White CTA button (used on red background) */
.btn-white-cta {
  background: #fff;
  color: var(--primary);
  border: none;
  border-radius: 0;
  font-weight: 900;
  font-size: 0.875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1.1rem 2.5rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  transition: background 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
}
.btn-white-cta:hover { background: var(--slate-100); color: var(--primary); }

/* Outline white button (used on red background) */
.btn-outline-white {
  background: transparent;
  color: #fff;
  border: 2px solid #fff;
  border-radius: 0;
  font-weight: 900;
  font-size: 0.875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1.1rem 2.5rem;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
}
.btn-outline-white:hover {
  background: #fff;
  color: var(--primary);
}
.btn-outline-white:hover .btn-triangle { background-color: var(--primary); }

/* Small triangle arrow inside buttons */
.btn-triangle {
  width: 8px;
  height: 8px;
  clip-path: polygon(0 0, 0% 100%, 100% 0);
  transform: rotate(90deg);
  display: inline-block;
  flex-shrink: 0;
  transition: background-color 0.2s;
}
.btn-triangle--white  { background-color: #fff; }
.btn-triangle--red    { background-color: var(--primary); }
.btn-triangle--lg {
  width: 12px;
  height: 12px;
}

/* ============================================================
   MAIN CONTENT WRAPPER
   ============================================================ */
.sai-main {
  padding-top: 5rem; /* offset for fixed navbar */
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.sai-hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding-top: 3rem;
  padding-bottom: 3rem;
}

/* Hero left column */
.sai-hero__left { position: relative; }

/* Background triangle accent (top-left of left col) */
.sai-hero__bg-tri-left {
  width: 6rem;
  height: 6rem;
  background: rgba(169, 22, 45, 0.05);
  top: -3rem;
  left: -2rem;
  z-index: 0;
}

/* Content wrapper inside hero left */
.sai-hero__content { position: relative; z-index: 1; }

/* Hero headline */
.sai-hero__headline {
  font-size: clamp(3rem, 7vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--slate-900);
  margin-bottom: 1.25rem;
}

/* Hero subtext */
.sai-hero__subtext {
  font-size: 1.25rem;
  color: var(--slate-600);
  max-width: 32rem;
  line-height: 1.6;
  font-weight: 500;
  margin-bottom: 2.5rem;
}

/* Hero right column */
.sai-hero__right { position: relative; }

/* Background triangle accent (top-right of right col) */
.sai-hero__bg-tri-right {
  width: 16rem;
  height: 16rem;
  background: rgba(169, 22, 45, 0.05);
  top: -2.5rem;
  right: -2.5rem;
  z-index: 0;
}

/* Abstract dark graphic container */
.sai-hero__graphic {
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-bg-2) 100%);
  position: relative;
  overflow: hidden;
  border-radius: 1rem;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

/* Layered abstract shapes inside graphic */
.sai-hero__shape { position: absolute; clip-path: polygon(0 0, 0% 100%, 100% 0); }
.sai-hero__shape--1 {
  width: 120%; height: 120%;
  background: rgba(169, 22, 45, 0.2);
  transform: rotate(15deg);
  top: -25%; left: -25%;
}
.sai-hero__shape--2 {
  width: 80%; height: 80%;
  background: rgba(30, 41, 59, 0.4);
  transform: rotate(-10deg);
  top: 0; right: 0;
}
.sai-hero__shape--3 {
  width: 60%; height: 60%;
  background: rgba(169, 22, 45, 0.4);
  transform: rotate(45deg);
  bottom: 0; left: 2.5rem;
}

/* Main central red triangle */
.sai-hero__main-tri {
  width: 12rem; height: 12rem;
  background: var(--primary);
  clip-path: polygon(0 0, 0% 100%, 100% 0);
  position: absolute;
  z-index: 10;
  opacity: 0.9;
  box-shadow: 0 25px 50px -12px rgba(169, 22, 45, 0.5);
  transition: transform 0.7s ease;
}
.sai-hero__main-tri:hover { transform: scale(1.05); }

/* Decorative connection lines overlay */
.sai-hero__lines {
  position: absolute;
  inset: 0;
  opacity: 0.25;
  pointer-events: none;
}
.sai-hero__line {
  position: absolute;
  background: #fff;
}
.sai-hero__line--1 { top: 25%;   left: 0; width: 100%; height: 1px; transform: rotate(-12deg); }
.sai-hero__line--2 { top: 50%;   left: 0; width: 100%; height: 1px; transform: rotate(6deg); }
.sai-hero__line--3 { bottom: 25%;left: 0; width: 100%; height: 1px; transform: rotate(-45deg); }
.sai-hero__line--4 { left: 33%;  top: 0;  height: 100%; width: 1px; transform: rotate(12deg); }

/* Glow overlay */
.sai-hero__glow {
  position: absolute;
  width: 150%; height: 8rem;
  background: linear-gradient(90deg, transparent, rgba(169, 22, 45, 0.3), transparent);
  transform: rotate(30deg);
  filter: blur(3rem);
}
.sai-hero__glow-line {
  position: absolute;
  width: 150%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
  transform: rotate(30deg);
}

/* Floating languages badge */
.sai-hero__badge {
  position: absolute;
  bottom: -2.5rem;
  left: -2.5rem;
  background: #fff;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--primary);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
  z-index: 20;
}
.sai-hero__badge-icon {
  font-size: 3rem;
  color: var(--primary);
}
.sai-hero__badge-number {
  font-size: 1.875rem;
  font-weight: 900;
  line-height: 1;
  color: var(--slate-900);
  margin: 0;
}
.sai-hero__badge-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--slate-500);
  margin: 0.25rem 0 0;
}

/* ============================================================
   TRUST BAR
   ============================================================ */
.sai-trust {
  border-top: 1px solid var(--slate-100);
  border-bottom: 1px solid var(--slate-100);
  background: rgba(248, 250, 252, 0.5);
  padding: 3rem 0;
}

.sai-trust__heading {
  text-align: center;
  font-size: 0.6rem;
  font-weight: 900;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--slate-400);
  margin-bottom: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.sai-trust__divider {
  height: 1px;
  width: 3rem;
  background: #e2e8f0;
  display: inline-block;
}

/* Logos row */
.sai-trust__logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  opacity: 0.4;
  filter: grayscale(1);
  transition: opacity 0.7s, filter 0.7s;
}
.sai-trust__logos:hover { opacity: 1; filter: grayscale(0); }

/* Individual logo items */
.sai-trust__logo       { font-size: 1.25rem; color: var(--slate-900); }
.sai-trust__logo--italic  { font-weight: 700; font-style: italic; letter-spacing: -0.02em; }
.sai-trust__logo--wide    { font-weight: 900; text-transform: uppercase; letter-spacing: 0.1em; }
.sai-trust__logo--serif   { font-weight: 700; font-family: Georgia, serif; }
.sai-trust__logo--mono    { font-weight: 700; font-family: monospace; }
.sai-trust__logo--tight   { font-weight: 700; text-transform: uppercase; letter-spacing: -0.01em; }

/* ============================================================
   SERVICES SECTION
   ============================================================ */
.sai-services {
  padding: 8rem 0;
}

/* Section header flex row */
.sai-services__header {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 5rem;
}

.sai-services__header-left { max-width: 36rem; }

.sai-services__headline {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 900;
  color: var(--slate-900);
  line-height: 1.15;
  margin: 0;
}

.sai-services__subtext {
  font-size: 0.875rem;
  color: var(--slate-500);
  max-width: 18rem;
  line-height: 1.6;
  font-weight: 500;
  padding-bottom: 0.5rem;
  margin: 0;
}

/* Service card */
.sai-services__card {
  background: #fff;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  height: 100%;
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.sai-services__card:hover {
  border-color: rgba(169, 22, 45, 0.2);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.08);
}

/* Icon box inside card */
.sai-services__icon-box {
  width: 3rem; height: 3rem;
  background: #f8fafc;
  border: 1px solid var(--slate-100);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  color: var(--primary);
  margin-bottom: 1.5rem;
  flex-shrink: 0;
}
.sai-services__icon-tri {
  position: absolute; top: 0; left: 0;
  width: 1rem; height: 1rem;
  background: rgba(169, 22, 45, 0.1);
  clip-path: polygon(0 0, 0% 100%, 100% 0);
}
.sai-services__icon { font-size: 1.5rem; }

/* Card title */
.sai-services__card-title {
  font-size: 1rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
  color: var(--on-surface);
}

/* Card body text */
.sai-services__card-text {
  font-size: 0.875rem;
  color: var(--slate-500);
  line-height: 1.6;
  font-weight: 500;
  margin-bottom: 2rem;
  flex-grow: 1;
}

/* "Learn More" link */
.sai-services__learn-more {
  font-size: 0.65rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: gap 0.2s;
  margin-top: auto;
}
.sai-services__learn-more:hover { gap: 1rem; color: var(--primary); }

/* ============================================================
   WHY US (DARK) SECTION
   ============================================================ */
.sai-why {
  background: var(--dark-bg);
  color: #fff;
  overflow: hidden;
  position: relative;
  padding: 8rem 0;
}

/* Large decorative triangle in corner */
.sai-why__corner-tri {
  width: 24rem; height: 24rem;
  background: rgba(255, 255, 255, 0.05);
  bottom: -5rem; right: -5rem;
  pointer-events: none;
}

/* Stat boxes grid */
.sai-why__stats-col { /* handled via Bootstrap col */ }

.sai-why__stat-box-dark {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  padding: 2.5rem;
}
.sai-why__stat-box-red {
  background: var(--primary);
  position: relative;
  padding: 2.5rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transform: translateX(1rem);
}

/* Small triangle corner on stat boxes */
.sai-why__stat-tri-red {
  position: absolute; top: 0; left: 0;
  width: 1rem; height: 1rem;
  background: var(--primary);
  clip-path: polygon(0 0, 0% 100%, 100% 0);
}
.sai-why__stat-tri-white {
  position: absolute; top: 0; left: 0;
  width: 1rem; height: 1rem;
  background: rgba(255, 255, 255, 0.3);
  clip-path: polygon(0 0, 0% 100%, 100% 0);
}

/* Stat number */
.sai-why__stat-number {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 0.25rem;
}
.sai-why__stat-number--red   { color: var(--primary); }
.sai-why__stat-number--white { color: #fff; }

/* Stat label */
.sai-why__stat-label {
  font-size: 0.65rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin: 0;
}
.sai-why__stat-label--dim    { color: rgba(255, 255, 255, 0.5); }
.sai-why__stat-label--muted  { color: rgba(255, 255, 255, 0.7); }

/* Second stats column offset */
.sai-why__col-offset { padding-top: 4rem; }

/* Right text column */
.sai-why__headline {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.sai-why__body {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  font-weight: 500;
  margin-bottom: 2rem;
}

/* Feature list */
.sai-why__feature-list { list-style: none; padding: 0; margin: 0; }
.sai-why__feature-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 1.5rem;
}
.sai-why__feature-item:last-child { margin-bottom: 0; }

/* ============================================================
   CASE STUDIES SECTION
   ============================================================ */
.sai-cases {
  padding: 8rem 0;
}

/* Section header */
.sai-cases__header {
  text-align: center;
  position: relative;
  margin-bottom: 5rem;
}
.sai-cases__header-tri {
  width: 8rem; height: 8rem;
  background: #f8fafc;
  z-index: 0;
}
.sai-cases__headline {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--slate-900);
  position: relative;
  z-index: 1;
  margin: 0;
}

/* Individual case card */
.sai-cases__card { cursor: pointer; }

/* Image wrapper */
.sai-cases__img-wrap {
  overflow: hidden;
  background: var(--slate-100);
  aspect-ratio: 16 / 9;
  position: relative;
  margin-bottom: 2rem;
}
.sai-cases__img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(1);
  transition: transform 1s ease, filter 1s ease;
  display: block;
}
.sai-cases__card:hover .sai-cases__img-wrap img {
  transform: scale(1.1);
  filter: grayscale(0);
}

/* Dark overlay on image */
.sai-cases__img-overlay {
  position: absolute; inset: 0;
  background: rgba(15, 23, 42, 0.1);
  transition: background 0.4s;
}
.sai-cases__card:hover .sai-cases__img-overlay { background: transparent; }

/* Corner triangle on image */
.sai-cases__img-tri {
  position: absolute; top: 0; left: 0;
  width: 2rem; height: 2rem;
  background: var(--primary);
  clip-path: polygon(0 0, 0% 100%, 100% 0);
}

/* Meta tags row */
.sai-cases__meta { display: flex; gap: 1rem; margin-bottom: 0.75rem; }

/* Case card title */
.sai-cases__title {
  font-size: 1.5rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--slate-900);
  line-height: 1.2;
  margin-bottom: 0.75rem;
  transition: color 0.3s;
}
.sai-cases__card:hover .sai-cases__title { color: var(--primary); }

/* Case card description */
.sai-cases__desc {
  color: var(--slate-500);
  font-weight: 500;
  line-height: 1.6;
  margin: 0;
}

/* ============================================================
   CTA SECTION
   ============================================================ */
.sai-cta {
  background: #f8fafc;
  padding: 6rem 0;
}

/* Red inner block */
.sai-cta__block {
  background: var(--primary);
  position: relative;
  overflow: hidden;
  text-align: center;
  color: #fff;
  padding: 6rem 4rem;
}

/* Decorative triangles on corners of CTA block */
.sai-cta__tri-tl {
  width: 16rem; height: 16rem;
  background: rgba(255, 255, 255, 0.05);
  top: -3rem; left: -3rem;
  pointer-events: none;
}
.sai-cta__tri-br {
  width: 16rem; height: 16rem;
  background: rgba(0, 0, 0, 0.05);
  bottom: -3rem; right: -3rem;
  pointer-events: none;
}

/* CTA inner content */
.sai-cta__content { position: relative; z-index: 10; }

/* CTA headline */
.sai-cta__headline {
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 1.15;
  max-width: 56rem;
  margin: 0 auto 1.25rem;
}

/* CTA sub text */
.sai-cta__subtext {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 36rem;
  font-weight: 500;
  line-height: 1.6;
  margin: 0 auto 2.5rem;
}

/* CTA buttons row */
.sai-cta__btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.sai-footer {
  background: #fff;
  border-top: 1px solid var(--slate-100);
}

.sai-footer__inner {
  padding: 6rem 0 3rem;
}

/* Brand column */
.sai-footer__logo {
  height: 2rem;
  width: auto;
  filter: grayscale(1);
}
.sai-footer__brand-text {
  font-size: 1rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--slate-900);
}
.sai-footer__desc {
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--slate-500);
  max-width: 20rem;
  margin: 0;
}

/* Social icons */
.sai-footer__social-icon {
  width: 2.5rem; height: 2.5rem;
  border: 1px solid var(--slate-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--slate-400);
  text-decoration: none;
  transition: all 0.2s;
  font-size: 1rem;
}
.sai-footer__social-icon:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* Footer column heading */
.sai-footer__col-heading {
  font-size: 0.65rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--slate-900);
  margin-bottom: 1.25rem;
}

/* Footer links */
.sai-footer__link {
  color: var(--slate-500);
  text-decoration: none;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  transition: color 0.2s;
  display: block;
}
.sai-footer__link:hover { color: var(--primary); }

/* Contact info text */
.sai-footer__contact-info {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--slate-500);
  line-height: 1.6;
  margin: 0;
}
.sai-footer__contact-phone {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--slate-900);
  margin: 0;
}

/* Bottom bar */
.sai-footer__bottom {
  border-top: 1px solid var(--slate-100);
  padding-top: 1.5rem;
  padding-bottom: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.sai-footer__copyright {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--slate-400);
  text-align: center;
  margin: 0;
}
.sai-footer__legal-links {
  display: flex;
  gap: 1.5rem;
}

/* ============================================================
   RESPONSIVE — TABLET (md: 768px)
   ============================================================ */
@media (min-width: 768px) {
  /* Navbar */
  .sai-navbar__brand-text { font-size: 1.1rem; }

  /* Hero badge visible */
  .sai-hero__badge { display: flex; }

  /* Trust logos spread out */
  .sai-trust__logos {
    justify-content: space-between;
    flex-wrap: nowrap;
    gap: 1rem;
  }

  /* Services header row */
  .sai-services__header {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }

  /* Footer bottom bar */
  .sai-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
  .sai-footer__copyright { text-align: left; }

  /* CTA block responsive padding */
  .sai-cta__block { padding: 6rem 6rem; }
}

/* ============================================================
   RESPONSIVE — DESKTOP (lg: 992px)
   ============================================================ */
@media (min-width: 992px) {
  /* Hero graphic badge — ensure visibility */
  .sai-hero__badge { display: flex; }

  /* Why section stat offset column */
  .sai-why__col-offset { padding-top: 4rem; }

  /* Stat box red shift */
  .sai-why__stat-box-red { transform: translateX(1rem); }
}

/* ============================================================
   RESPONSIVE — MOBILE (max 576px)
   ============================================================ */
@media (max-width: 575.98px) {
  /* Hero */
  .sai-hero { min-height: auto; padding-top: 2rem; padding-bottom: 3rem; }
  .sai-hero__badge { display: none; }
  .sai-hero__subtext { font-size: 1rem; }
  .sai-hero__bg-tri-left,
  .sai-hero__bg-tri-right { display: none; }
  .sai-hero__graphic { margin-top: 2rem; }

  /* Buttons stack */
  .sai-hero__content .d-flex { flex-direction: column; align-items: flex-start; }
  .btn-primary-hero,
  .btn-secondary-hero { width: 100%; justify-content: center; }

  /* Trust logos */
  .sai-trust__logos {
    justify-content: center;
    gap: 1.25rem 2rem;
  }

  /* Services section padding */
  .sai-services { padding: 4rem 0; }
  .sai-services__header { margin-bottom: 2.5rem; }

  /* Why section */
  .sai-why { padding: 4rem 0; }
  .sai-why__stat-box-red { transform: translateX(0); }
  .sai-why__col-offset { padding-top: 0; }

  /* Case studies */
  .sai-cases { padding: 4rem 0; }
  .sai-cases__header { margin-bottom: 2.5rem; }

  /* CTA */
  .sai-cta { padding: 3rem 0; }
  .sai-cta__block { padding: 3rem 1.5rem; }
  .sai-cta__btns { flex-direction: column; align-items: center; }
  .btn-white-cta,
  .btn-outline-white { width: 100%; justify-content: center; }

  /* Footer */
  .sai-footer__inner { padding: 3rem 0 2rem; }
  .sai-footer__desc { max-width: 100%; }
  .sai-footer__bottom { padding-bottom: 2rem; }
}

/* ============================================================
   RESPONSIVE — SMALL TABLET (576px – 767px)
   ============================================================ */
@media (min-width: 576px) and (max-width: 767.98px) {
  .sai-hero__badge { display: none; }
  .sai-why__stat-box-red { transform: translateX(0); }
  .sai-cta__block { padding: 4rem 2rem; }
}