/* ============================================
   IntegrIT Vendor Advisory Group — Main Styles
   "Integrity without the why."
   ============================================ */

/* --- Custom Properties --- */
:root {
  /* Brand Palette */
  --blue-deep:    #0B1D32;
  --blue-primary: #163A5F;
  --blue-accent:  #2176AE;
  --blue-light:   #4A9FD9;
  --charcoal:     #1C1C1E;
  --silver:       #8E9AAF;
  --silver-light: #C0C7D0;
  --steel:        #D5DAE0;
  --ice:          #EEF1F5;
  --white:        #FFFFFF;
  --accent-warm:  #D4A853;

  /* Typography */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 84px;

  /* Transitions */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--charcoal);
  background-color: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a {
  color: var(--blue-accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--blue-light);
}

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--blue-deep);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  margin-bottom: var(--space-md);
  color: #3A3F47;
}

.lead {
  font-size: 1.15rem;
  color: var(--silver);
  line-height: 1.8;
  max-width: 640px;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--blue-accent);
  margin-bottom: var(--space-sm);
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-3xl) 0;
}

.section--dark {
  background-color: var(--blue-deep);
  color: var(--steel);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--white);
}

.section--dark p {
  color: var(--silver-light);
}

.section--ice {
  background-color: var(--ice);
}

.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(11, 29, 50, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
}

.nav__brand span.accent {
  color: var(--blue-accent);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--silver-light);
  letter-spacing: 0.02em;
  transition: color var(--transition);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue-accent);
  transition: width var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--white);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__cta {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--white);
  background: var(--blue-accent);
  padding: 0.55rem 1.4rem;
  border-radius: 6px;
  transition: all var(--transition);
}

.nav__cta:hover {
  background: var(--blue-light);
  color: var(--white);
  transform: translateY(-1px);
}

/* Mobile Menu */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav__toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav__toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, var(--blue-deep) 0%, #0F2B47 40%, var(--blue-primary) 100%);
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(33, 118, 174, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(212, 168, 83, 0.05) 0%, transparent 70%);
  border-radius: 50%;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding: var(--space-3xl) 0;
}

.hero__label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue-accent);
  margin-bottom: var(--space-lg);
  padding: 0.4rem 1rem;
  border: 1px solid rgba(33, 118, 174, 0.3);
  border-radius: 4px;
}

.hero__title {
  color: var(--white);
  margin-bottom: var(--space-lg);
  font-weight: 800;
}

.hero__title .highlight {
  color: var(--blue-accent);
}

.hero__tagline {
  font-size: 1.3rem;
  color: var(--silver-light);
  margin-bottom: var(--space-xl);
  line-height: 1.6;
  font-weight: 300;
  letter-spacing: 0.01em;
}

.hero__tagline em {
  font-style: italic;
  color: var(--accent-warm);
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero__stat-bar {
  display: flex;
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero__stat {
  text-align: left;
}

.hero__stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.75rem;
  color: var(--silver);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.3rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.01em;
}

.btn--primary {
  background: var(--blue-accent);
  color: var(--white);
}

.btn--primary:hover {
  background: var(--blue-light);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(33, 118, 174, 0.3);
}

.btn--outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn--outline:hover {
  border-color: var(--blue-accent);
  color: var(--blue-accent);
  transform: translateY(-2px);
}

.btn--dark {
  background: var(--blue-deep);
  color: var(--white);
}

.btn--dark:hover {
  background: var(--blue-primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn--arrow::after {
  content: '→';
  transition: transform var(--transition);
}

.btn--arrow:hover::after {
  transform: translateX(4px);
}

/* --- Cards --- */
.card {
  background: var(--white);
  border: 1px solid var(--steel);
  border-radius: 8px;
  padding: var(--space-xl);
  transition: all var(--transition);
}

.card:hover {
  border-color: var(--blue-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(11, 29, 50, 0.08);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ice);
  border-radius: 8px;
  margin-bottom: var(--space-lg);
  font-size: 1.4rem;
  color: var(--blue-accent);
}

.card__title {
  font-size: 1.15rem;
  margin-bottom: var(--space-sm);
}

.card__text {
  font-size: 0.925rem;
  color: var(--silver);
  line-height: 1.7;
}

/* Dark card variant */
.card--dark {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.08);
}

.card--dark:hover {
  border-color: var(--blue-accent);
  background: rgba(255, 255, 255, 0.06);
}

.card--dark .card__title {
  color: var(--white);
}

.card--dark .card__text {
  color: var(--silver);
}

.card--dark .card__icon {
  background: rgba(33, 118, 174, 0.12);
}

/* --- Approach / Process --- */
.process {
  display: grid;
  gap: var(--space-xl);
  counter-reset: process-counter;
}

.process__step {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: var(--space-lg);
  align-items: start;
  counter-increment: process-counter;
}

.process__number {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ice);
  border-radius: 50%;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--blue-accent);
}

.process__step-title {
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
}

.process__step-text {
  font-size: 0.925rem;
  color: var(--silver);
}

/* --- Principles / Values --- */
.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.principle {
  padding: var(--space-xl);
  border-left: 3px solid var(--blue-accent);
  background: rgba(255, 255, 255, 0.03);
}

.principle__title {
  font-size: 1rem;
  color: var(--white);
  margin-bottom: var(--space-sm);
}

.principle__text {
  font-size: 0.9rem;
  color: var(--silver);
  line-height: 1.7;
}

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, var(--blue-primary) 0%, var(--blue-deep) 100%);
  padding: var(--space-3xl) 0;
  text-align: center;
}

.cta-banner h2 {
  color: var(--white);
  margin-bottom: var(--space-md);
}

.cta-banner p {
  color: var(--silver-light);
  max-width: 540px;
  margin: 0 auto var(--space-xl);
  font-size: 1.05rem;
}

/* --- Contact Form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact-info__item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  align-items: start;
}

.contact-info__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ice);
  border-radius: 8px;
  color: var(--blue-accent);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-info__label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--silver);
  margin-bottom: 0.2rem;
}

.contact-info__value {
  font-size: 1rem;
  color: var(--charcoal);
  font-weight: 500;
}

.form {
  display: grid;
  gap: var(--space-lg);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form__label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--charcoal);
  letter-spacing: 0.02em;
}

.form__input,
.form__textarea,
.form__select {
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--steel);
  border-radius: 6px;
  background: var(--white);
  color: var(--charcoal);
  transition: all var(--transition);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  outline: none;
  border-color: var(--blue-accent);
  box-shadow: 0 0 0 3px rgba(33, 118, 174, 0.1);
}

.form__textarea {
  min-height: 140px;
  resize: vertical;
}

/* --- Footer --- */
.footer {
  background: var(--blue-deep);
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer__brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
}

.footer__brand span.accent {
  color: var(--blue-accent);
}

.footer__tagline {
  font-size: 0.8rem;
  color: var(--silver);
  margin-top: 0.3rem;
  font-style: italic;
}

.footer__links {
  display: flex;
  gap: var(--space-lg);
}

.footer__link {
  font-size: 0.85rem;
  color: var(--silver-light);
}

.footer__link:hover {
  color: var(--white);
}

.footer__bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}

.footer__copy {
  font-size: 0.78rem;
  color: var(--silver);
}

/* --- Page Headers --- */
.page-header {
  background: linear-gradient(160deg, var(--blue-deep) 0%, var(--blue-primary) 100%);
  padding: calc(var(--nav-height) + var(--space-3xl)) 0 var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.page-header::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -15%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(33, 118, 174, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.page-header h1 {
  color: var(--white);
  margin-bottom: var(--space-md);
  position: relative;
  z-index: 2;
}

.page-header .lead {
  color: var(--silver-light);
  position: relative;
  z-index: 2;
}

/* --- About Page Specifics --- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about-intro__visual {
  background: #FFFFFF;
  border-radius: 12px;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.about-intro__visual-text {
  font-size: 4rem;
  font-weight: 900;
  color: var(--blue-deep);
  opacity: 0.08;
  letter-spacing: -0.05em;
}

.about-intro__badge {
  position: absolute;
  bottom: var(--space-lg);
  left: var(--space-lg);
  background: var(--blue-deep);
  color: var(--white);
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* --- Divider --- */
.divider {
  width: 48px;
  height: 3px;
  background: var(--blue-accent);
  margin: var(--space-lg) 0;
  border-radius: 2px;
}

.divider--center {
  margin-left: auto;
  margin-right: auto;
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 968px) {
  .about-intro {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero__stat-bar {
    gap: var(--space-xl);
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    top: var(--nav-height);
    right: -100%;
    width: 280px;
    height: calc(100vh - var(--nav-height));
    background: var(--blue-deep);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-lg);
    transition: right var(--transition);
    border-left: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav__links.active {
    right: 0;
  }

  .nav__toggle {
    display: flex;
  }

  .hero__content {
    padding: var(--space-xl) 0;
  }

  .hero__stat-bar {
    gap: var(--space-lg);
  }

  .form__row {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__links {
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .grid--3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .hero__actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* --- Print --- */
@media print {
  .nav, .footer, .cta-banner {
    display: none;
  }

  body {
    color: #000;
    background: #fff;
  }

  .hero {
    min-height: auto;
    background: none;
    color: #000;
  }
}