/* ========================================
   Section-Specific Styles
   Modern structure with Luxerio brand identity
   ======================================== */

/* ========================================
   Header
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: transparent;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.header--scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.header__logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-white);
  transition: color 0.3s ease;
  text-decoration: none;
}

.header--scrolled .header__logo {
  color: var(--color-primary);
}

.header__nav {
  display: flex;
  align-items: center;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.header__nav-link {
  display: block;
  color: var(--color-text-white);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 10px 16px;
  transition: color 0.2s ease;
  text-decoration: none;
}

.header--scrolled .header__nav-link {
  color: var(--color-text);
}

.header__nav-link:hover {
  color: var(--color-accent);
}

.header__cta {
  padding: 10px 24px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 6px;
}

/* Mobile Header */
.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
  background: transparent;
  border: none;
}

.header__hamburger span {
  width: 22px;
  height: 2px;
  background-color: var(--color-text-white);
  transition: all 0.2s ease;
  border-radius: 1px;
}

.header--scrolled .header__hamburger span {
  background-color: var(--color-text);
}

@media (max-width: 1023px) {
  .header__inner {
    padding: 0 20px;
  }

  .header__nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-bg);
    padding: 88px 32px 40px;
    flex-direction: column;
    align-items: flex-start;
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }

  .header__nav--active {
    transform: translateX(0);
  }

  .header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }

  .header__nav-link {
    color: var(--color-text);
    font-size: 1rem;
    padding: 16px 0;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .header__hamburger {
    display: flex;
  }

  .header__cta {
    display: none;
  }
}

/* ========================================
   Hero
   ======================================== */
.hero {
  min-height: 100vh;
  background-color: var(--color-bg-dark);
  color: var(--color-text-white);
  display: flex;
  flex-direction: column;
  padding-top: 72px;
}

.hero__inner {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 40px;
  width: 100%;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: 3.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.hero__text {
  font-size: 1rem;
  line-height: 1.9;
  margin-bottom: 32px;
  color: rgba(255, 255, 255, 0.8);
}

.hero__cta {
  padding: 14px 32px;
  font-size: 0.9375rem;
  border-radius: 6px;
}

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

.hero__image .placeholder--round {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero__image .placeholder__text {
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.75rem;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.hero__stat {
  text-align: center;
  padding: 40px 20px;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.hero__stat:last-child {
  border-right: none;
}

.hero__stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
}

@media (max-width: 1023px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 40px 20px;
    text-align: center;
  }

  .hero__title {
    font-size: 2.25rem;
  }

  .hero__image {
    order: -1;
  }

  .hero__image .placeholder--round {
    width: 180px;
    height: 180px;
  }

  .hero__stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__stat {
    padding: 24px 16px;
  }

  .hero__stat:nth-child(2) {
    border-right: none;
  }

  .hero__stat:nth-child(3),
  .hero__stat:nth-child(4) {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .hero__stat-number {
    font-size: 2rem;
  }
}

/* ========================================
   Section Common
   ======================================== */
section {
  padding: 100px 40px;
}

.section__lead {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text-light);
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section__cta {
  text-align: center;
  margin-top: 48px;
}

@media (max-width: 767px) {
  section {
    padding: 64px 20px;
  }

  .section__lead {
    font-size: 0.9375rem;
    margin-bottom: 32px;
  }

  .section__cta {
    margin-top: 32px;
  }
}

/* ========================================
   About
   ======================================== */
.about {
  background-color: var(--color-bg);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  margin-top: 48px;
}

.about__subtitle {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.about__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.about__item {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}

.about__item:last-child {
  border-bottom: none;
}

.about__item dt {
  font-weight: 600;
  min-width: 90px;
  color: var(--color-text);
  font-size: 0.9375rem;
}

.about__item dd {
  color: var(--color-text-light);
  margin: 0;
  font-size: 0.9375rem;
}

.about__description {
  color: var(--color-text-light);
  line-height: 1.9;
  margin: 0 0 12px;
  font-size: 0.9375rem;
}

.about__description strong {
  color: var(--color-text);
}

@media (max-width: 1023px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* ========================================
   Philosophy
   ======================================== */
.philosophy {
  background-color: var(--color-bg-alt);
}

.philosophy__purpose,
.philosophy__promise {
  max-width: 720px;
  margin: 0 auto 64px;
  text-align: center;
}

.philosophy__label {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.philosophy__statement {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 20px;
}

.philosophy__description {
  color: var(--color-text-light);
  line-height: 1.9;
  font-size: 0.9375rem;
}

.philosophy__subpoints {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  text-align: left;
}

.philosophy__subpoints li {
  padding: 14px 0;
  color: var(--color-text);
  line-height: 1.8;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--color-border);
}

.philosophy__subpoints li:last-child {
  border-bottom: none;
}

.philosophy__subpoints strong {
  color: var(--color-accent);
}

.philosophy__principles {
  margin-top: 64px;
}

.philosophy__principles-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.philosophy__principle {
  background-color: var(--color-bg);
  padding: 28px 20px;
  text-align: center;
}

.philosophy__principle-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-accent);
  color: var(--color-text-white);
  border-radius: 50%;
  font-weight: 700;
  margin-bottom: 16px;
  font-size: 1rem;
}

.philosophy__principle-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.philosophy__principle-text {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

@media (max-width: 1199px) {
  .philosophy__principles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .philosophy__principles-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .philosophy__statement {
    font-size: 1.375rem;
  }

  .philosophy__principle {
    padding: 20px;
  }
}

/* ========================================
   Problems
   ======================================== */
.problems {
  background-color: var(--color-bg);
}

.problems__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.problems__card {
  background-color: var(--color-bg-alt);
  padding: 32px;
  text-align: center;
}

.problems__card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 20px;
  background-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.problems__card-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.problems__card-text {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.8;
  text-align: left;
  margin-bottom: 8px;
}

.problems__card-text:last-child {
  margin-bottom: 0;
}

.problems__card-text strong {
  color: var(--color-text);
  font-weight: 600;
}

@media (max-width: 1023px) {
  .problems__grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Results
   ======================================== */
.results {
  background-color: var(--color-bg-dark);
  color: var(--color-text-white);
}

.results .section-header__title {
  color: var(--color-text-white);
}

.results__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background-color: rgba(255, 255, 255, 0.08);
  margin-bottom: 64px;
}

.results__stat {
  text-align: center;
  padding: 40px 24px;
  background-color: var(--color-bg-dark);
}

.results__stat-number {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
  line-height: 1.4;
}

.results__stat-unit {
  font-size: 0.875rem;
}

.results__stat-label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
}

.results__mechanism {
  margin-top: 64px;
}

.results__mechanism-title {
  text-align: center;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-white);
  margin-bottom: 32px;
}

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

.results__mechanism-item {
  padding: 24px;
  background-color: rgba(255, 255, 255, 0.03);
  border-left: 2px solid var(--color-accent);
}

.results__mechanism-item .results__mechanism-title {
  font-size: 1rem;
  text-align: left;
  margin-bottom: 12px;
}

.results__mechanism-text {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
  margin-bottom: 4px;
}

.results__mechanism-text:last-child {
  margin-bottom: 0;
}

.results__mechanism-text strong {
  color: var(--color-accent);
}

@media (max-width: 1023px) {
  .results__stats {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 599px) {
  .results__stats {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Services
   ======================================== */
.services {
  background-color: var(--color-bg);
}

.services__model-title,
.services__areas-title {
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 32px;
}

.services__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.services__step {
  text-align: center;
  padding: 32px 24px;
  background-color: var(--color-bg-alt);
  position: relative;
}

.services__step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-accent);
  color: var(--color-text-white);
  border-radius: 50%;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.services__step-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.services__step-text {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.services__step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  color: var(--color-border);
}

.services__areas {
  margin-top: 64px;
}

.services__areas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.services__area {
  background-color: var(--color-bg-alt);
  padding: 24px;
}

.services__area-icon {
  width: 40px;
  height: 40px;
  background-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.services__area-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.services__area-text {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

@media (max-width: 1023px) {
  .services__steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .services__step:not(:last-child)::after {
    content: '↓';
    right: 50%;
    top: auto;
    bottom: -12px;
    transform: translateX(50%);
  }

  .services__areas-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 599px) {
  .services__areas-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Why Us
   ======================================== */
.why-us {
  background-color: var(--color-bg-alt);
}

.why-us__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background-color: var(--color-border);
}

.why-us__item {
  background-color: var(--color-bg);
  padding: 40px 24px;
  text-align: center;
}

.why-us__item-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.why-us__item-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.why-us__item-text {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

@media (max-width: 1199px) {
  .why-us__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .why-us__grid {
    grid-template-columns: 1fr;
  }

  .why-us__item {
    padding: 24px;
    text-align: left;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px 16px;
    align-items: start;
  }

  .why-us__item-number {
    margin-bottom: 0;
    grid-row: span 2;
    align-self: start;
    padding-top: 4px;
  }

  .why-us__item-title {
    margin-bottom: 4px;
  }
}

/* ========================================
   Steps
   ======================================== */
.steps {
  background-color: var(--color-bg);
}

.steps__flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.steps__item {
  text-align: center;
  padding: 24px 16px;
  background-color: var(--color-bg-alt);
  position: relative;
}

.steps__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: var(--color-accent);
  color: var(--color-text-white);
  border-radius: 50%;
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.steps__title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.steps__text {
  font-size: 0.75rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.steps__item:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  color: var(--color-border);
}

@media (max-width: 1199px) {
  .steps__flow {
    grid-template-columns: repeat(3, 1fr);
  }

  .steps__item:nth-child(3)::after {
    content: '↓';
    right: 50%;
    top: auto;
    bottom: -12px;
    transform: translateX(50%);
  }

  .steps__item:nth-child(4)::after {
    content: '←';
    right: auto;
    left: -12px;
  }
}

@media (max-width: 767px) {
  .steps__flow {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .steps__item:not(:last-child)::after,
  .steps__item:nth-child(3)::after,
  .steps__item:nth-child(4)::after {
    content: '↓';
    right: 50%;
    top: auto;
    bottom: -10px;
    transform: translateX(50%);
    left: auto;
  }
}

/* ========================================
   Vision
   ======================================== */
.vision {
  background-color: var(--color-bg-dark);
  color: var(--color-text-white);
}

.vision .section-header__title {
  color: var(--color-text-white);
}

.vision__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background-color: rgba(255, 255, 255, 0.08);
  margin-bottom: 48px;
}

.vision__card {
  background-color: var(--color-bg-dark);
  padding: 40px 28px;
}

.vision__card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.vision__card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.vision__card-text {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
}

.vision__card-text strong {
  color: rgba(255, 255, 255, 0.9);
}

.vision__dataos {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 40px;
  background-color: rgba(255, 255, 255, 0.03);
}

.vision__dataos-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.vision__dataos-text {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.9;
}

@media (max-width: 1023px) {
  .vision__grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Contact
   ======================================== */
.contact {
  background-color: var(--color-accent);
  color: var(--color-text-white);
  padding: 80px 40px;
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  max-width: 960px;
  margin: 0 auto;
}

.contact__title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 16px;
}

.contact__description {
  font-size: 0.9375rem;
  line-height: 1.9;
  margin-bottom: 24px;
  color: rgba(255, 255, 255, 0.9);
}

.contact__cta {
  display: inline-block;
  padding: 14px 32px;
  background-color: var(--color-text-white);
  color: var(--color-accent);
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: 6px;
  transition: opacity 0.2s ease;
  text-decoration: none;
}

.contact__cta:hover {
  opacity: 0.9;
  color: var(--color-accent);
}

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

.contact__image .placeholder--round {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
}

.contact__image .placeholder__text {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.75rem;
}

@media (max-width: 767px) {
  .contact {
    padding: 64px 20px;
  }

  .contact__inner {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .contact__title {
    font-size: 1.5rem;
  }

  .contact__image {
    order: -1;
  }

  .contact__image .placeholder--round {
    width: 160px;
    height: 160px;
  }
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background-color: var(--color-bg-dark);
  color: var(--color-text-white);
  padding: 64px 40px 32px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  max-width: 1200px;
  margin: 0 auto;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-white);
  margin-bottom: 12px;
}

.footer__description {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.8;
}

.footer__info-title,
.footer__nav-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer__info-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__info-list li {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.8125rem;
  padding: 4px 0;
}

.footer__nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__nav-list a {
  display: block;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.8125rem;
  padding: 4px 0;
  transition: color 0.2s ease;
  text-decoration: none;
}

.footer__nav-list a:hover {
  color: var(--color-accent);
}

.footer__bottom {
  padding-top: 24px;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
}

.footer__copyright {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.3);
}

@media (max-width: 1023px) {
  .footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }
}