/* ============================================
   ML Security — Main Stylesheet
   ============================================ */

/* --- CSS Variables --- */
:root {
  --navy: #1b2a4a;
  --blue: #2196F3;
  --blue-dark: #1976D2;
  --blue-light: #e8f4fd;
  --gray: #6c757d;
  --gray-light: #f8f9fa;
  --white: #ffffff;
  --text: #333333;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
  --radius: 8px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--white);
}

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

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

img {
  max-width: 100%;
  height: auto;
}

ul {
  list-style: none;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

/* --- Header --- */
.header {
  background: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  padding-bottom: 12px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header__logo img {
  height: 80px;
  width: auto;
}

.header__tagline {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-left: 2px solid var(--blue);
  padding-left: 12px;
  line-height: 1.3;
}

.header__nav {
  display: flex;
  gap: 32px;
}

.header__nav a {
  color: var(--navy);
  font-weight: 600;
  font-size: 1rem;
  padding: 4px 0;
  position: relative;
}

.header__nav a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue);
  transition: width var(--transition);
}

.header__nav a:hover::after,
.header__nav a.active::after {
  width: 100%;
}

.header__nav a.active {
  color: var(--blue);
}

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

.hamburger span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--navy);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* --- Hero Section --- */
.hero {
  background: linear-gradient(rgba(27, 42, 74, 0.6), rgba(27, 42, 74, 0.75)),
              url('../images/hero.jpg') center/cover no-repeat;
  color: var(--white);
  padding: 120px 0;
  text-align: center;
  min-height: 540px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__badge {
  display: inline-block;
  background: rgba(33, 150, 243, 0.2);
  border: 1px solid rgba(33, 150, 243, 0.4);
  color: var(--white);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  line-height: 1.2;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero p {
  font-size: 1.2rem;
  max-width: 640px;
  margin: 0 auto 36px;
  opacity: 0.9;
  line-height: 1.7;
}

.hero__buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-align: center;
}

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

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

.btn--outline {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn--outline:hover {
  background: var(--white);
  color: var(--navy);
}

/* --- Section Utilities --- */
.section {
  padding: 80px 0;
}

.section--alt {
  background: var(--gray-light);
}

.section--blue {
  background: var(--blue-light);
}

.section__title {
  text-align: center;
  font-size: 2rem;
  color: var(--navy);
  margin-bottom: 16px;
}

.section__subtitle {
  text-align: center;
  color: var(--gray);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 48px;
}

/* --- Service Cards --- */
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 24px 32px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  border-top: 3px solid var(--blue);
  position: relative;
}

.card p {
  flex: 1;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.14);
}

.card__icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-light);
  border-radius: 50%;
  color: var(--blue);
  margin-bottom: 20px;
}

.card__icon svg {
  flex-shrink: 0;
}

.services-nav__icon {
  display: flex;
  align-items: center;
}

.services-nav__icon svg {
  flex-shrink: 0;
}

.card h3 {
  color: var(--navy);
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.card p {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.7;
}

.card .btn {
  margin-top: 20px;
}

/* --- Trust / Stats Banner --- */
.trust {
  background: var(--navy);
  color: var(--white);
  padding: 56px 0;
}

.trust__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  text-align: center;
}

.trust__item {
  padding: 16px 0;
  position: relative;
}

.trust__item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 10%;
  height: 80%;
  width: 1px;
  background: rgba(255, 255, 255, 0.15);
}

.trust__icon {
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.trust__icon svg {
  stroke: var(--blue);
}

.trust__item h3 {
  font-size: 2.4rem;
  margin-bottom: 6px;
  color: var(--blue);
  font-weight: 800;
}

.trust__item p {
  font-size: 0.95rem;
  opacity: 0.75;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

/* --- How It Works --- */
.how-it-works {
  background: var(--gray-light);
  padding: 80px 0;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.steps::before {
  content: "";
  position: absolute;
  top: 40px;
  left: calc(16.66% + 20px);
  right: calc(16.66% + 20px);
  height: 2px;
  background: var(--blue);
  opacity: 0.3;
}

.step {
  text-align: center;
  position: relative;
}

.step__number {
  width: 56px;
  height: 56px;
  background: var(--blue);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
  box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.step h3 {
  color: var(--navy);
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.step p {
  color: var(--gray);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* --- Services Quick Nav --- */
.services-nav {
  background: var(--white);
  border-bottom: 1px solid #e5e7eb;
  padding: 0;
  position: sticky;
  top: 80px;
  z-index: 900;
}

.services-nav__list {
  display: flex;
  justify-content: center;
  gap: 0;
}

.services-nav__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 24px;
  color: var(--gray);
  font-weight: 600;
  font-size: 0.9rem;
  border-bottom: 3px solid transparent;
  transition: all var(--transition);
}

.services-nav__link:hover,
.services-nav__link.active {
  color: var(--blue);
  border-bottom-color: var(--blue);
}

/* (services-nav__icon styled above with card icons) */

/* --- Services Detail Page --- */
.service-detail {
  padding: 80px 0;
  scroll-margin-top: 140px;
}

.service-detail:nth-child(even) {
  background: var(--gray-light);
}

.service-detail__layout {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 48px;
  align-items: start;
}

.service-detail__layout--reverse {
  grid-template-columns: 1fr 160px;
}

.service-detail__icon-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: sticky;
  top: 160px;
}

.service-detail__icon-large {
  font-size: 4.5rem;
  line-height: 1;
  margin-bottom: 12px;
}

.service-detail__icon-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--blue);
}

.service-detail__content h2 {
  color: var(--navy);
  font-size: 2rem;
  margin-bottom: 8px;
  line-height: 1.3;
}

.service-detail__subtitle {
  font-size: 1.1rem;
  color: var(--blue);
  font-weight: 600;
  margin-bottom: 20px;
}

.service-detail__content p {
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 16px;
}

.service-detail__highlight {
  background: var(--blue-light);
  border-left: 4px solid var(--blue);
  padding: 20px 24px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 24px 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--navy);
}

.service-detail__highlight strong {
  color: var(--navy);
}

/* Service Showcase Images */
.service-showcase {
  padding: 0;
  background: var(--navy);
}

.service-showcase__inner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  max-height: 340px;
}

.service-showcase__img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  display: block;
}

.service-showcase__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(27, 42, 74, 0.85));
  padding: 40px 32px 24px;
}

.service-showcase__caption p {
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 500;
  margin: 0;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 24px 0;
}

.feature-grid__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid #e5e7eb;
  font-size: 0.92rem;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.service-detail:nth-child(even) .feature-grid__item {
  background: var(--white);
}

.feature-grid__item:hover {
  border-color: var(--blue);
  box-shadow: 0 2px 8px rgba(33, 150, 243, 0.1);
}

.feature-grid__check {
  color: var(--blue);
  font-weight: bold;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.service-detail__content .btn {
  margin-top: 8px;
}

/* --- About Page --- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-intro__text h2 {
  color: var(--navy);
  font-size: 2rem;
  margin-bottom: 16px;
}

.about-intro__text p {
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-intro__image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-intro__image img {
  max-width: 300px;
  border-radius: var(--radius);
}

.values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.value-card {
  text-align: center;
  padding: 32px 20px;
}

.value-card__icon {
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.value-card h3 {
  color: var(--navy);
  margin-bottom: 8px;
}

.value-card p {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-form label {
  display: block;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
  margin-top: 16px;
}

.contact-form label:first-child {
  margin-top: 0;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--blue);
}

.contact-form textarea {
  resize: vertical;
  min-height: 140px;
}

.contact-form .btn {
  margin-top: 24px;
  width: 100%;
}

.contact-form .form-success {
  display: none;
  background: #d4edda;
  color: #155724;
  padding: 16px;
  border-radius: var(--radius);
  margin-top: 16px;
  text-align: center;
  font-weight: 600;
}

.contact-form .form-success.show {
  display: block;
}

.contact-info h3 {
  color: var(--navy);
  font-size: 1.3rem;
  margin-bottom: 24px;
}

.contact-info__item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.contact-info__icon {
  min-width: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-info__text h4 {
  color: var(--navy);
  margin-bottom: 4px;
}

.contact-info__text p {
  color: var(--gray);
}

/* --- Service Area --- */
.service-area {
  padding: 64px 0;
  background: var(--gray-light);
  text-align: center;
}

.service-area__tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.service-area__tag {
  display: inline-block;
  padding: 10px 20px;
  background: var(--white);
  border: 1px solid #dde1e6;
  border-radius: 50px;
  font-size: 0.95rem;
  color: var(--navy);
  font-weight: 500;
  transition: all var(--transition);
}

.service-area__tag:hover {
  background: var(--blue-light);
  border-color: var(--blue);
  color: var(--blue);
}

/* --- CTA Banner --- */
.cta {
  background: linear-gradient(135deg, var(--navy) 0%, #2c3e6d 100%);
  color: var(--white);
  padding: 60px 0;
  text-align: center;
}

.cta h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.cta p {
  opacity: 0.9;
  margin-bottom: 28px;
  font-size: 1.1rem;
}

/* --- Page Header (inner pages) --- */
.page-header {
  background: linear-gradient(135deg, var(--navy) 0%, #2c3e6d 100%);
  color: var(--white);
  padding: 60px 0;
  text-align: center;
}

.page-header h1 {
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.page-header p {
  font-size: 1.1rem;
  opacity: 0.85;
}

/* --- Footer --- */
.footer {
  background: var(--navy);
  color: var(--white);
  padding: 48px 0 24px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer__brand img {
  height: 48px;
  margin-bottom: 16px;
}

.footer__brand p {
  opacity: 0.75;
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer h4 {
  margin-bottom: 16px;
  font-size: 1.1rem;
}

.footer__links a {
  display: block;
  color: rgba(255, 255, 255, 0.75);
  padding: 4px 0;
  font-size: 0.95rem;
}

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

.footer__contact p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer__icon {
  flex-shrink: 0;
  stroke: rgba(255, 255, 255, 0.75);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

/* --- Responsive --- */
@media (max-width: 992px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .cards .card:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    max-width: 50%;
    margin: 0 auto;
  }

  .trust__grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  /* Services layout */
  .service-detail__layout,
  .service-detail__layout--reverse {
    grid-template-columns: 100px 1fr;
    gap: 32px;
  }

  .service-detail__icon-large {
    font-size: 3.5rem;
  }

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

@media (max-width: 768px) {
  /* Header */
  .header__tagline {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .header__nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    gap: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  .header__nav.open {
    display: flex;
  }

  .header__nav a {
    padding: 14px 20px;
    border-bottom: 1px solid #eee;
  }

  .header__nav a::after {
    display: none;
  }

  /* Hero */
  .hero {
    padding: 64px 0;
    min-height: auto;
  }

  .hero h1 {
    font-size: 1.9rem;
  }

  .hero p {
    font-size: 1.05rem;
  }

  .hero__badge {
    font-size: 0.75rem;
    padding: 6px 16px;
  }

  .hero__buttons {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  /* Cards */
  .cards {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  /* Trust */
  .trust__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .trust__item:not(:last-child)::after {
    display: none;
  }

  /* How It Works */
  .steps {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .steps::before {
    display: none;
  }

  /* About */
  .about-intro {
    grid-template-columns: 1fr;
  }

  .about-intro__image {
    order: -1;
  }

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

  /* Services */
  .services-nav__list {
    flex-wrap: wrap;
    justify-content: center;
  }

  .services-nav__link {
    padding: 12px 16px;
    font-size: 0.82rem;
  }

  .services-nav {
    position: static;
  }

  .service-detail__layout,
  .service-detail__layout--reverse {
    grid-template-columns: 1fr;
  }

  .service-detail__icon-block {
    position: static;
    flex-direction: row;
    gap: 12px;
  }

  .service-detail__icon-large {
    font-size: 2.5rem;
    margin-bottom: 0;
  }

  .service-detail {
    scroll-margin-top: 60px;
  }

  /* Service Showcase */
  .service-showcase__inner {
    max-height: 220px;
  }

  .service-showcase__img {
    height: 220px;
  }

  .service-showcase__caption {
    padding: 30px 20px 16px;
  }

  .service-showcase__caption p {
    font-size: 0.9rem;
  }

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

  /* Footer */
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* Page Header */
  .page-header {
    padding: 40px 0;
  }

  .page-header h1 {
    font-size: 1.8rem;
  }

  .section__title {
    font-size: 1.6rem;
  }

  .section {
    padding: 48px 0;
  }
}