/* ==========================================================================
   SiteCraft — Design System
   ========================================================================== */

:root {
  --color-bg: #0a0e17;
  --color-bg-alt: #111827;
  --color-surface: #1a2234;
  --color-surface-hover: #222d42;
  --color-border: rgba(255, 255, 255, 0.06);
  --color-border-strong: rgba(255, 255, 255, 0.12);
  --color-accent: #c9a227;
  --color-accent-light: #e0bc4a;
  --color-accent-glow: rgba(201, 162, 39, 0.35);
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-error: #f87171;

  --font-display: "Outfit", system-ui, sans-serif;
  --font-sans: "Inter", system-ui, sans-serif;

  --container-max: 1200px;
  --header-height: 72px;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.25s ease;
}

/* Reset & base
   ========================================================================== */

*,
*::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-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0.01em;
  color: var(--color-text);
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

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

ul,
ol {
  list-style: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

/* Skip link
   ========================================================================== */

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 1000;
  padding: 0.75rem 1.25rem;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 600;
  border-radius: var(--radius);
  transition: top var(--transition);
}

.skip-link:focus {
  top: 1rem;
  outline: 2px solid var(--color-text);
  outline-offset: 2px;
}

/* Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section {
  padding-block: 5rem;
}

.section--alt {
  background: rgba(26, 34, 52, 0.4);
  border-block: 1px solid var(--color-border);
}

.section__header {
  text-align: center;
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: 3.5rem;
}

.section__header--left {
  text-align: left;
  margin-inline: 0;
  margin-bottom: 0;
}

.section__eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section__subtitle {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  line-height: 1.65;
}

/* Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition),
    color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: 0 4px 24px var(--color-accent-glow);
}

.btn--primary:hover {
  background: var(--color-accent-light);
  box-shadow: 0 6px 32px var(--color-accent-glow);
  transform: translateY(-1px);
}

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

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}

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

/* Cards
   ========================================================================== */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), transform var(--transition),
    box-shadow var(--transition);
}

/* Header & navigation
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  transition: background var(--transition), backdrop-filter var(--transition),
    border-color var(--transition);
}

.header--scrolled {
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.logo__img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}

.logo--footer .logo__img {
  width: 32px;
  height: 32px;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  z-index: 110;
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav {
  position: fixed;
  inset: 0;
  top: var(--header-height);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  background: rgba(10, 14, 23, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

.nav--open {
  opacity: 1;
  visibility: visible;
}

.nav__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.nav__link {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-accent);
}

.nav__cta {
  margin-top: 0.5rem;
}

/* Language switcher
   ========================================================================== */

.lang-switch {
  display: inline-flex;
  padding: 3px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.lang-switch__btn {
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  background: transparent;
  border: none;
  border-radius: calc(var(--radius) - 3px);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.lang-switch__btn:hover {
  color: var(--color-text);
}

.lang-switch__btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.lang-switch__btn--active {
  background: var(--color-accent);
  color: var(--color-bg);
}

.lang-switch__btn--active:hover {
  color: var(--color-bg);
}

/* Hero
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201, 162, 39, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 162, 39, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 20%, transparent 70%);
}

.hero__grid::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 70% 20%, rgba(201, 162, 39, 0.08), transparent 60%);
}

.hero__inner {
  position: relative;
  padding-block: 4rem 6rem;
  max-width: 800px;
}

.hero__eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 4.25rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: 2.5rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.hero__stats li {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.hero__stats strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: 0.125rem;
}

/* How it works
   ========================================================================== */

.steps {
  display: grid;
  gap: 1.5rem;
}

.step {
  padding: 2rem;
  position: relative;
}

.step__number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-accent);
  opacity: 0.4;
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.step__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.step__text {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Pricing
   ========================================================================== */

.pricing-grid {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

.pricing-card {
  padding: 2rem;
  position: relative;
}

.pricing-card--featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 40px rgba(201, 162, 39, 0.12);
}

.pricing-card__badge {
  position: absolute;
  top: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.25rem 1rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--color-accent);
  color: var(--color-bg);
  border-radius: 100px;
  white-space: nowrap;
}

.pricing-card__tier {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.pricing-card__name {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.pricing-card__price {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 1.75rem;
}

.pricing-card__price span {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.pricing-card__features {
  margin-bottom: 2rem;
}

.pricing-card__features li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.625rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.pricing-card__features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* Portfolio
   ========================================================================== */

.portfolio-grid {
  display: grid;
  gap: 1.5rem;
}

.portfolio-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), border-color var(--transition),
    box-shadow var(--transition);
}

.portfolio-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.portfolio-card__thumb {
  height: 220px;
  overflow: hidden;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.portfolio-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 0.4s ease;
}

.portfolio-card:hover .portfolio-card__thumb img {
  transform: scale(1.03);
}

.portfolio-card__body {
  padding: 1.5rem;
}

.portfolio-card__title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 0.25rem;
}

.portfolio-card__category {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.portfolio-card__link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: color var(--transition);
}

.portfolio-card__link:hover {
  color: var(--color-accent-light);
}

.portfolio-card__link::after {
  content: " →";
}

/* Contact form
   ========================================================================== */

.contact-layout {
  display: grid;
  gap: 3rem;
}

.contact-form-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.required {
  color: var(--color-accent);
}

.optional {
  color: var(--color-text-muted);
  font-weight: 400;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: var(--color-error);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-error {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-error);
  margin-top: 0.375rem;
  min-height: 1.25rem;
}

.form-honey {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.form-submit-error {
  font-size: 0.875rem;
  color: var(--color-error);
  margin-bottom: 1rem;
  text-align: center;
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.form-success {
  text-align: center;
  padding: 2rem 1rem;
}

.form-success__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  font-size: 1.5rem;
  background: rgba(201, 162, 39, 0.15);
  color: var(--color-accent);
  border-radius: 50%;
  margin-bottom: 1.25rem;
}

.form-success h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.form-success p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Footer
   ========================================================================== */

.footer {
  padding-block: 3rem;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: grid;
  gap: 2rem;
  text-align: center;
}

.footer__tagline {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

.footer__phones {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-top: 1rem;
}

.footer__phones-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

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

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

.footer__email {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-top: 1rem;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
}

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

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

.footer__social {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.footer__social-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

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

.footer__copy {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  opacity: 0.7;
}

/* Reveal animations
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Responsive
   ========================================================================== */

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav {
    position: static;
    flex-direction: row;
    opacity: 1;
    visibility: visible;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    gap: 2rem;
  }

  .nav__list {
    flex-direction: row;
    gap: 2rem;
  }

  .nav__link {
    font-size: 0.9375rem;
  }

  .nav__cta {
    margin-top: 0;
  }

  .lang-switch {
    flex-shrink: 0;
  }

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

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

  .pricing-card--featured {
    transform: scale(1.03);
  }

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

  .contact-layout {
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
  }

  .contact-form-wrap {
    padding: 2.5rem;
  }

  .footer__inner {
    grid-template-columns: 1fr auto auto;
    grid-template-rows: auto auto;
    text-align: left;
    align-items: center;
  }

  .footer__brand {
    grid-row: span 2;
  }

  .footer__copy {
    grid-column: 2 / -1;
    text-align: right;
  }
}

@media (min-width: 1024px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 800px;
    margin-inline: auto;
  }

  .hero__inner {
    padding-block: 6rem 8rem;
  }
}

/* Reduced motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn,
  .card,
  .portfolio-card,
  .portfolio-card__thumb img,
  .header,
  .nav,
  .nav-toggle__bar {
    transition: none;
  }

  .portfolio-card:hover .portfolio-card__thumb img {
    transform: none;
  }
}