/* ============================================================
   BRAINSOFT SYSTEMS INC. — Stylesheet
   ============================================================ */

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Brand colours */
  --navy:        #0B1E3A;
  --navy-mid:    #132540;
  --navy-light:  #1D3557;
  --gold:        #C8922A;
  --gold-hover:  #D9A234;
  --gold-faint:  rgba(200,146,42,.12);
  --gold-border: rgba(200,146,42,.30);

  /* Neutrals */
  --white:      #FFFFFF;
  --off-white:  #F5F7FA;
  --gray-100:   #EEF1F5;
  --gray-200:   #D9DFE7;
  --gray-400:   #9CA8B8;
  --gray-600:   #5A6476;
  --text:       #1A2B3D;
  --text-muted: #4B5A6E;

  /* Typography */
  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'Merriweather', Georgia, serif;

  /* Radii & shadows */
  --r:    8px;
  --r-lg: 14px;
  --sh-sm: 0 1px 4px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.05);
  --sh-md: 0 4px 14px rgba(0,0,0,.09), 0 2px 6px rgba(0,0,0,.05);
  --sh-lg: 0 12px 36px rgba(0,0,0,.11), 0 4px 12px rgba(0,0,0,.07);

  --ease: 0.24s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; display: block; }
a   { text-decoration: none; color: inherit; }
ul  { list-style: none; }

/* ── Layout helpers ── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.75rem;
}

.section     { padding: 6.5rem 0; }
.section-alt { background: var(--off-white); }

/* ── Typography ── */
.section-label {
  display: block;
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: .875rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.625rem);
  font-weight: 900;
  color: var(--navy);
  line-height: 1.2;
  margin-bottom: 1.1rem;
}

.section-sub {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 640px;
  line-height: 1.75;
}

.section-header { margin-bottom: 3.75rem; }

.body-text {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .825rem 1.875rem;
  border-radius: var(--r);
  font-family: var(--font-sans);
  font-size: .9375rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--ease), border-color var(--ease),
              transform var(--ease), box-shadow var(--ease);
  letter-spacing: .01em;
  white-space: nowrap;
}

.btn-gold {
  background: var(--gold);
  color: var(--white);
  border-color: var(--gold);
}
.btn-gold:hover {
  background: var(--gold-hover);
  border-color: var(--gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200,146,42,.35);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.45);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.85);
}

.btn-full { width: 100%; }

/* ============================================================
   HEADER / NAV
   ============================================================ */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 200;
  background: var(--navy);
  border-top: 3px solid var(--gold);       /* always-on premium accent stripe */
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--ease), border-color var(--ease);
}
.header.scrolled {
  box-shadow: 0 4px 32px rgba(0,0,0,.34);
  border-bottom-color: rgba(200,146,42,.22);
}

/* ── Masthead ── */
.masthead {
  border-bottom: 1px solid rgba(255,255,255,.1);
  overflow: hidden;
  max-height: 180px;
  padding: 2rem 0 1.625rem;
  opacity: 1;
  /* Subtle warm glow from the left where the brand name sits */
  background-image:
    radial-gradient(ellipse 55% 130% at 5% 50%, rgba(200,146,42,.1) 0%, transparent 65%),
    linear-gradient(to bottom, rgba(255,255,255,.03) 0%, transparent 100%);
  transition: max-height .44s cubic-bezier(.4,0,.2,1),
              padding    .44s cubic-bezier(.4,0,.2,1),
              opacity    .32s ease;
}
.header.scrolled .masthead {
  max-height: 0;
  padding: 0;
  opacity: 0;
  pointer-events: none;
}

.masthead-brand {
  display: inline-flex;
  flex-direction: column;
  gap: .625rem;
  color: var(--white);
  padding-left: 1.375rem;
  border-left: 3px solid var(--gold);      /* pull-quote accent */
  transform: translateY(0);
  transition: transform .44s cubic-bezier(.4,0,.2,1);
}
.header.scrolled .masthead-brand {
  transform: translateY(-8px);             /* content slides up as masthead closes */
}

.masthead-name {
  font-family: var(--font-serif);
  font-size: clamp(1.875rem, 5vw, 3.25rem);
  font-weight: 900;
  color: var(--white);
  letter-spacing: -.025em;
  line-height: 1;
  text-shadow: 0 2px 20px rgba(0,0,0,.28);
}

.masthead-tagline {
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
  opacity: .85;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: .875rem 0;
}

/* Logo: hidden while masthead is showing, fades in after scroll */
.nav-logo {
  display: flex;
  align-items: center;
  gap: .8rem;
  color: var(--white);
  flex-shrink: 0;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-8px);
  transition: opacity .25s ease, transform .3s ease;
}
.header.scrolled .nav-logo {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
}
.nav-logo-mark {
  width: 40px;
  height: 40px;
  background: var(--gold);
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.3rem;
  color: var(--white);
  flex-shrink: 0;
}
.nav-logo-text {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: .35em;
  white-space: nowrap;
}
.nav-logo-name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: -.015em;
  color: var(--white);
}
.nav-logo-sub {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: -.015em;
  color: var(--white);
  text-transform: none;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}

.nav-link {
  font-size: .9rem;
  font-weight: 500;
  color: rgba(255,255,255,.8);
  position: relative;
  transition: color var(--ease);
}
.nav-link::after {
  content: '';
  position: absolute;
  inset: auto 0 -4px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--ease);
}
.nav-link:hover,
.nav-link.active { color: var(--white); }
.nav-link:hover::after,
.nav-link.active::after { transform: scaleX(1); }

.nav-cta {
  background: var(--gold);
  color: var(--white) !important;
  padding: .55rem 1.3rem;
  border-radius: var(--r);
  font-weight: 600;
  transition: background var(--ease), transform var(--ease);
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--gold-hover); transform: translateY(-1px); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: .25rem;
  z-index: 201;
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--ease), opacity var(--ease);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--navy);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 75% 45%, rgba(200,146,42,.09) 0%, transparent 60%),
    radial-gradient(ellipse 55% 75% at 5% 85%,  rgba(29,53,87,.7)   0%, transparent 55%),
    linear-gradient(140deg, #0B1E3A 0%, #1D3557 55%, #0B1E3A 100%);
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 64px 64px;
}

/* Decorative rings */
.hero-bg::before {
  content: '';
  position: absolute;
  right: -80px;
  top: 50%;
  transform: translateY(-50%);
  width: 640px;
  height: 640px;
  border-radius: 50%;
  border: 1px solid rgba(200,146,42,.1);
  box-shadow: 0 0 0 80px rgba(200,146,42,.04),
              0 0 0 160px rgba(200,146,42,.025),
              0 0 0 240px rgba(200,146,42,.015);
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-top: 15.25rem;
  padding-bottom: 7rem;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  background: var(--gold-faint);
  border: 1px solid var(--gold-border);
  color: var(--gold);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
  padding: .4rem 1.1rem;
  border-radius: 50px;
  margin-bottom: 2rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 5.5vw, 4rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.13;
  margin-bottom: 1.6rem;
}
.hero-accent { color: var(--gold); }

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.1875rem);
  color: rgba(255,255,255,.68);
  line-height: 1.78;
  max-width: 600px;
  margin-bottom: 2.75rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 2.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
.hero-scroll span {
  display: block;
  width: 1px;
  height: 52px;
  margin: 0 auto;
  background: linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,.38));
  animation: scrollDrop 2.2s ease-in-out infinite;
}
@keyframes scrollDrop {
  0%   { opacity: 0; transform: scaleY(0); transform-origin: top; }
  40%  { opacity: 1; transform: scaleY(1); }
  100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5.5rem;
  align-items: center;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.stat-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--sh-sm);
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}
.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-md);
  border-color: var(--gold);
}

.stat-num {
  font-family: var(--font-serif);
  font-size: 2.375rem;
  font-weight: 900;
  color: var(--navy);
  line-height: 1;
  margin-bottom: .5rem;
}

.stat-label {
  font-size: .75rem;
  font-weight: 600;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* ============================================================
   SERVICES
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.375rem;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-lg);
  padding: 2.125rem 1.875rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}
.service-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-hover));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--sh-lg);
  border-color: rgba(200,146,42,.25);
}
.service-card:hover::after { transform: scaleX(1); }

.svc-icon {
  width: 46px;
  height: 46px;
  color: var(--gold);
  margin-bottom: 1.375rem;
}
.svc-icon svg { width: 100%; height: 100%; }

.svc-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: .75rem;
  line-height: 1.3;
}

.svc-desc {
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.72;
}

/* ============================================================
   CLIENTS
   ============================================================ */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.client-category {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-lg);
  padding: 2rem 1.75rem;
  box-shadow: var(--sh-sm);
  transition: transform var(--ease), box-shadow var(--ease);
}
.client-category:hover {
  transform: translateY(-2px);
  box-shadow: var(--sh-md);
}

.cat-title {
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold);
  padding-bottom: .875rem;
  border-bottom: 1px solid var(--gray-100);
  margin-bottom: 1rem;
}

.client-list li {
  font-size: .9rem;
  font-weight: 500;
  color: var(--navy);
  padding: .5rem 0;
  border-bottom: 1px solid var(--gray-100);
  line-height: 1.4;
}
.client-list li:last-child { border-bottom: none; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.45fr;
  gap: 4.5rem;
  align-items: start;
}

.contact-info {
  padding-top: .5rem;
}

.contact-item {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  margin-bottom: 2.25rem;
}
.contact-item:last-child { margin-bottom: 0; }

.contact-icon {
  width: 46px;
  height: 46px;
  background: var(--navy);
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  flex-shrink: 0;
}
.contact-icon svg { width: 22px; height: 22px; }

.contact-label {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--gray-400);
  margin-bottom: .3rem;
}

.contact-value {
  font-size: .9375rem;
  color: var(--navy);
  font-weight: 500;
  line-height: 1.55;
}
a.contact-value:hover { color: var(--gold); }

/* Form */
.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-lg);
  padding: 2.75rem;
  box-shadow: var(--sh-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.125rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.375rem;
}
.form-group:last-of-type { margin-bottom: 1.75rem; }

.form-group label {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: .45rem;
}
.required { color: var(--gold); }

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-sans);
  font-size: .9375rem;
  color: var(--text);
  background: var(--off-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--r);
  padding: .75rem 1rem;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--gray-400); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(11,30,58,.09);
  background: var(--white);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-group select   { cursor: pointer; }

/* Custom select arrow */
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%235A6476' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .875rem center;
  background-size: 16px;
  padding-right: 2.5rem;
}

.form-success,
.form-error {
  display: none;
  text-align: center;
  border-radius: var(--r);
  padding: .875rem 1rem;
  margin-top: 1rem;
  font-size: .875rem;
  font-weight: 500;
}
.form-success {
  color: #1a7a4a;
  background: #e9f7ef;
  border: 1px solid #a8dcc0;
}
.form-error {
  color: #9b2020;
  background: #fdf0f0;
  border: 1px solid #f0b8b8;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,.65);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4.5rem;
  padding: 4.5rem 1.75rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: .8rem;
  color: var(--white);
  margin-bottom: 1.25rem;
}

.footer-desc {
  font-size: .875rem;
  line-height: 1.8;
  max-width: 280px;
  margin-bottom: 1rem;
}
.footer-address {
  font-size: .8125rem;
  line-height: 1.7;
  color: rgba(255,255,255,.45);
}

.footer-heading {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.125rem;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}
.footer-col ul li,
.footer-col ul li a {
  font-size: .875rem;
  color: rgba(255,255,255,.55);
  transition: color var(--ease);
}
.footer-col ul li a:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 1.5rem 1.75rem;
  text-align: center;
  font-size: .8125rem;
  color: rgba(255,255,255,.35);
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .65s ease, transform .65s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Per-column stagger for service cards */
.services-grid .service-card:nth-child(1) { transition-delay:   0ms; }
.services-grid .service-card:nth-child(2) { transition-delay:  65ms; }
.services-grid .service-card:nth-child(3) { transition-delay: 130ms; }
.services-grid .service-card:nth-child(4) { transition-delay: 195ms; }
.services-grid .service-card:nth-child(5) { transition-delay: 260ms; }
.services-grid .service-card:nth-child(6) { transition-delay: 325ms; }
.services-grid .service-card:nth-child(7) { transition-delay: 390ms; }
.services-grid .service-card:nth-child(8) { transition-delay: 455ms; }
.services-grid .service-card:nth-child(9) { transition-delay: 520ms; }

/* Per-column stagger for client categories */
.clients-grid .client-category:nth-child(1) { transition-delay:   0ms; }
.clients-grid .client-category:nth-child(2) { transition-delay:  80ms; }
.clients-grid .client-category:nth-child(3) { transition-delay: 160ms; }
.clients-grid .client-category:nth-child(4) { transition-delay: 240ms; }

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .clients-grid   { grid-template-columns: repeat(2, 1fr); }
  .about-grid     { gap: 3.5rem; }
  .footer-grid    { gap: 3rem; }
}

/* Mobile */
@media (max-width: 768px) {
  .section { padding: 4.5rem 0; }

  /* Masthead: tighter on mobile */
  .masthead { max-height: 120px; padding: 1.25rem 0 1rem; }
  .hero-inner { padding-top: 11rem; }

  /* Mobile nav overlay */
  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--navy);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    z-index: 200;
  }
  .nav-links.open { display: flex; }
  .nav-link  { font-size: 1.2rem; }
  .nav-cta   { padding: .8rem 2.25rem; font-size: 1.1rem; }
  .nav-toggle { display: flex; }

  /* Open-state hamburger → X */
  .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

  /* Sections */
  .about-grid    { grid-template-columns: 1fr; gap: 2.75rem; }
  .about-stats   { grid-template-columns: 1fr 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .clients-grid  { grid-template-columns: 1fr; }
  .contact-grid  { grid-template-columns: 1fr; gap: 2.75rem; }
  .form-row      { grid-template-columns: 1fr; }
  .footer-grid   { grid-template-columns: 1fr; gap: 2.5rem; padding: 3rem 1.75rem; }

  .hero-actions  { flex-direction: column; }
  .hero-actions .btn { width: 100%; }

  /* Disable decorative ring on small screens */
  .hero-bg::before { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 1.25rem; }
  .masthead  { max-height: 100px; padding: 1rem 0 .875rem; }
  .hero-inner { padding-top: 10rem; }
  .services-grid { grid-template-columns: 1fr; }
  .about-stats   { grid-template-columns: 1fr 1fr; }
  .contact-form  { padding: 1.75rem 1.25rem; }
}