/* =============================================
   KIEVIUM — Modern Smart Tech Website
   ============================================= */

:root {
  --color-bg: #0a0e17;
  --color-bg-alt: #111827;
  --color-bg-card: #151c2c;
  --color-surface: #1a2236;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-accent: #38bdf8;
  --color-accent-light: #7dd3fc;
  --color-accent-glow: rgba(56, 189, 248, 0.25);
  --color-gold: #f59e0b;
  --color-gold-light: #fbbf24;
  --gradient-primary: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  --font-body: 'Outfit', sans-serif;
  --font-display: 'Syne', sans-serif;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px var(--color-accent-glow);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 72px;
}

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

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

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Typography ---- */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section__tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section__desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  max-width: 560px;
  line-height: 1.7;
}

.section__header {
  text-align: center;
  margin-bottom: 64px;
}

.section__header .section__desc {
  margin: 0 auto;
}

.section {
  padding: 100px 0;
}

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

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 100px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 60px var(--color-accent-glow);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text);
  border-color: var(--color-border);
  backdrop-filter: blur(12px);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(56, 189, 248, 0.06);
}

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

/* ---- Header / Nav ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

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

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  z-index: 1001;
}

.logo-icon {
  width: 36px;
  height: 36px;
  object-fit: contain;
  flex-shrink: 0;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  padding: 8px 18px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: 100px;
  transition: var(--transition);
}

.nav__link:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.06);
}

.nav__link--cta {
  background: var(--gradient-primary);
  color: #fff !important;
  margin-left: 8px;
}

.nav__link--cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: 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;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(10, 14, 23, 0.5) 0%, rgba(10, 14, 23, 0.85) 60%, var(--color-bg) 100%),
    radial-gradient(ellipse at 30% 50%, rgba(56, 189, 248, 0.08) 0%, transparent 60%);
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding-top: var(--header-height);
  max-width: 800px;
}

.hero__badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 28px;
  backdrop-filter: blur(12px);
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 8vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 24px;
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.1875rem);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero__stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat__number {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat__label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 2;
}

.scroll-indicator {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ---- Services ---- */
.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

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

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.2);
  box-shadow: var(--shadow-md);
}

.service-card__image {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.service-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.service-card:hover .service-card__image img {
  transform: scale(1.05);
}

.service-card__icon {
  position: absolute;
  bottom: 16px;
  right: 16px;
  width: 48px;
  height: 48px;
  background: rgba(10, 14, 23, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.service-card__icon svg {
  width: 24px;
  height: 24px;
}

.service-card__body {
  padding: 28px;
}

.service-card__body h3 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-card__body > p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: 20px;
  line-height: 1.65;
}

.service-card__features li {
  position: relative;
  padding-left: 20px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.service-card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* ---- Packages ---- */
.packages__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.package-card {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.package-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.15);
}

.package-card--featured {
  background: linear-gradient(160deg, rgba(56, 189, 248, 0.08) 0%, var(--color-bg-card) 50%);
  border-color: rgba(56, 189, 248, 0.3);
  box-shadow: var(--shadow-glow);
}

.package-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 20px;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 100px;
  white-space: nowrap;
}

.package-card__tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.package-card__header h3 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.package-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.package-card__price {
  display: flex;
  align-items: baseline;
  gap: 2px;
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
}

.price-currency {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.price-amount {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
}

.package-card--featured .price-amount {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price-period {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-left: 4px;
}

.package-card__features {
  flex: 1;
  margin-bottom: 28px;
}

.package-card__features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  line-height: 1.5;
}

.package-card__features svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.package-card__btn { margin-top: auto; }

.packages__note {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 48px;
  font-style: italic;
}

/* ---- Process ---- */
.process__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.process-step {
  text-align: center;
  padding: 32px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.process-step:hover {
  border-color: rgba(56, 189, 248, 0.2);
  transform: translateY(-2px);
}

.process-step__number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.process-step h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.process-step p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---- About ---- */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about__content p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.7;
}

.about__regions {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}

.region-badge {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.region-badge svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.region-badge strong {
  display: block;
  font-size: 0.9375rem;
  margin-bottom: 2px;
}

.region-badge span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.about__image-stack {
  position: relative;
}

.about__image-stack img {
  border-radius: var(--radius-lg);
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.about__floating-card {
  position: absolute;
  bottom: -20px;
  left: -20px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  background: rgba(21, 28, 44, 0.9);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.floating-card__icon {
  font-size: 1.5rem;
  color: var(--color-accent);
}

.about__floating-card strong {
  display: block;
  font-size: 0.9375rem;
}

.about__floating-card span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ---- Contact ---- */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: start;
}

.contact__info p {
  color: var(--color-text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

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

.contact__item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

a.contact__item:hover {
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateX(4px);
}

.contact__item svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact__item span {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact__item strong {
  font-size: 0.9375rem;
}

.contact__form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(148, 163, 184, 0.5);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 16px;
}

/* ---- Footer ---- */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 64px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer__brand p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-top: 16px;
  line-height: 1.6;
  max-width: 280px;
}

.footer__links h4 {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer__links li {
  margin-bottom: 10px;
}

.footer__links a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: var(--transition);
}

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

.footer__links li:not(:has(a)) {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  text-align: center;
}

.footer__bottom p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ---- Toast ---- */
.toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  background: var(--color-surface);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  transform: translateY(120%);
  opacity: 0;
  transition: var(--transition);
  z-index: 2000;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.toast span {
  font-size: 0.9375rem;
  font-weight: 500;
}

/* ---- Reveal animations ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .packages__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 85vw);
    height: 100vh;
    flex-direction: column;
    align-items: stretch;
    padding: calc(var(--header-height) + 32px) 32px 32px;
    background: rgba(10, 14, 23, 0.97);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--color-border);
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    gap: 4px;
  }

  .nav__menu.active {
    right: 0;
  }

  .nav__link {
    padding: 14px 18px;
    font-size: 1rem;
  }

  .nav__link--cta {
    margin-left: 0;
    margin-top: 12px;
    text-align: center;
  }

  .hero__stats {
    gap: 32px;
  }

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

  .packages__grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }

  .process__steps {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about__visual {
    order: -1;
  }

  .about__floating-card {
    left: 16px;
    bottom: -16px;
  }

  .contact__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .hero__scroll {
    display: none;
  }
}

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

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

  .hero__actions .btn {
    width: 100%;
  }

  .contact__form {
    padding: 24px;
  }

  .toast {
    left: 16px;
    right: 16px;
    bottom: 16px;
  }
}