/* ===== CSS VARIABLES ===== */
:root {
  --color-primary: #353B41;
  --color-primary-dark: #1E2125;
  --color-primary-light: #4A5158;
  --color-accent: #DD0112;
  --color-accent-hover: #B8010E;
  --color-bg: #F8FAFC;
  --color-bg-white: #FFFFFF;
  --color-text: #353B41;
  --color-text-light: #5A6168;
  --color-text-lighter: #8A9199;
  --color-border: #E2E8F0;
  --color-error: #EF4444;
  --color-success: #22C55E;

  --font-heading: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --max-width: 1200px;
  --header-height: 72px;
  --transition: 0.3s ease;
}

/* ===== RESET ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

/* ===== UTILITIES ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section--alt {
  background-color: var(--color-bg-white);
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section__tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-accent);
  background: rgba(53, 59, 65, 0.08);
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section__desc {
  font-size: 1.05rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  justify-content: center;
}

.btn--primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(221, 1, 18, 0.35);
}

.btn--outline {
  background-color: transparent;
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn--outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.7);
}

.btn--full {
  width: 100%;
}

.btn__icon {
  transition: transform var(--transition);
}

.btn--primary:hover .btn__icon {
  transform: translateX(4px);
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition);
  background: #FFFFFF;
  box-shadow: var(--shadow-sm);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo img {
  height: 40px;
  width: auto;
}

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

.nav__list {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  transition: color var(--transition);
}

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

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

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link--cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

/* Burger */
.header__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.burger__line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

.header__burger.active .burger__line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__burger.active .burger__line:nth-child(2) {
  opacity: 0;
}

.header__burger.active .burger__line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, #353B41 0%, #1A1D21 100%);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(74, 81, 88, 0.3) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(74, 81, 88, 0.15) 0%, transparent 50%);
  z-index: 1;
}

/* Grid pattern overlay */
.hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 120px 24px 80px;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 40px;
  line-height: 1.7;
}

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

.hero__scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.hero__scroll span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 12px;
  position: relative;
}

.hero__scroll span::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 2px;
  animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
  0%, 100% { top: 8px; opacity: 1; }
  50% { top: 20px; opacity: 0.3; }
}

/* ===== ABOUT ===== */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about__values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}

.value-card {
  background: var(--color-bg-white);
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.value-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.value-card__icon {
  color: var(--color-primary-light);
  margin-bottom: 12px;
}

.value-card__title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-primary);
}

.value-card__text {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

.about__visual {
  position: relative;
}

.about__image-wrapper {
  background: linear-gradient(135deg, var(--color-accent) 0%, #FF1A2A 100%);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 24px;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about__image-placeholder {
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
}

.about__image-placeholder svg {
  margin-bottom: 12px;
}

.about__image-placeholder span {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat {
  text-align: center;
  background: var(--color-bg-white);
  padding: 20px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.stat__number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.stat__label {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

/* ===== SERVICES ===== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--color-bg);
  padding: 36px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #FF1A2A);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.service-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent), #FF1A2A);
  color: #FFFFFF;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.service-card__title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.service-card__text {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.6;
}

.service-card__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.service-card__list li {
  font-size: 0.85rem;
  color: var(--color-text-light);
  padding-left: 18px;
  position: relative;
}

.service-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* ===== WHY ===== */
.why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.why-card {
  background: var(--color-bg-white);
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  position: relative;
}

.why-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-primary-light);
}

.why-card__number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.3;
  margin-bottom: 12px;
}

.why-card__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.why-card__text {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* Last card spans full width on 3-col grid */
.why__grid .why-card:nth-child(4) {
  grid-column: 1 / 3;
}

.why__grid .why-card:nth-child(5) {
  grid-column: 3 / 4;
}

/* ===== CONTACT ===== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact__info-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.contact__info-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent), #FF1A2A);
  color: #FFFFFF;
  border-radius: var(--radius-sm);
}

.contact__info-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-lighter);
  margin-bottom: 4px;
}

.contact__info-link {
  color: var(--color-primary-light);
  font-weight: 500;
  transition: color var(--transition);
}

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

.contact__info-text {
  font-size: 0.95rem;
  color: var(--color-text);
}

.contact__map {
  margin-top: 24px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

/* Contact Form */
.contact__form-wrapper {
  background: var(--color-bg);
  padding: 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form__group {
  display: flex;
  flex-direction: column;
}

.form__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form__required {
  color: var(--color-error);
}

.form__input,
.form__textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-white);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(53, 59, 65, 0.15);
}

.form__input.error,
.form__textarea.error {
  border-color: var(--color-error);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

.form__error {
  font-size: 0.8rem;
  color: var(--color-error);
  min-height: 18px;
  margin-top: 4px;
}

.form__success {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius-sm);
  color: var(--color-success);
  font-size: 0.9rem;
  font-weight: 500;
}

.form__success.show {
  display: flex;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.8);
  padding: 60px 0 0;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__tagline {
  font-size: 0.9rem;
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.5);
}

.footer__links-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 16px;
}

.footer__links ul li {
  margin-bottom: 8px;
}

.footer__links ul li a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition);
}

.footer__links ul li a:hover {
  color: var(--color-accent);
}

.footer__contact p {
  font-size: 0.9rem;
  margin-bottom: 6px;
  line-height: 1.5;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
  gap: 12px;
}

.footer__legal-link {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: underline;
  cursor: pointer;
  transition: color var(--transition);
}

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

/* ===== MODAL ===== */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal.show {
  display: flex;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.modal__content {
  position: relative;
  background: var(--color-bg-white);
  max-width: 640px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-light);
  border-radius: 50%;
  transition: all var(--transition);
}

.modal__close:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.modal__content h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.modal__body h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-primary);
  margin-top: 20px;
  margin-bottom: 8px;
}

.modal__body p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about__visual {
    order: -1;
  }

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

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

  .why__grid .why-card:nth-child(4),
  .why__grid .why-card:nth-child(5) {
    grid-column: auto;
  }

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

  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .section {
    padding: 70px 0;
  }

  .header__burger {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg-white);
    box-shadow: var(--shadow-xl);
    flex-direction: column;
    justify-content: center;
    padding: 40px;
    transition: right var(--transition);
    z-index: 1000;
  }

  .header__nav.open {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: 24px;
  }

  .nav__link {
    color: var(--color-text) !important;
    font-size: 1.1rem;
  }

  .hero__content {
    padding: 100px 24px 60px;
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }

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

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

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

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

  .contact__form-wrapper {
    padding: 24px;
  }

  .footer__top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .service-card__list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero__title {
    font-size: 1.6rem;
  }

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