/* =====================================================
   ЦИФРОЮРИЗМ — Design Tokens & Component Styles
   Palette: deep navy + gold accents (legal/IP authority)
   ===================================================== */

/* --- Type Scale --- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Playfair Display', 'Georgia', serif;
  --font-body: 'DM Sans', 'Helvetica Neue', sans-serif;
}

/* ---- LIGHT MODE (default) ---- */
:root,
[data-theme='light'] {
  --color-bg: #F5F6FA;
  --color-surface: #FFFFFF;
  --color-surface-2: #F0F1F7;
  --color-surface-offset: #E8EAF2;
  --color-divider: #D0D4E2;
  --color-border: #BFC4D6;

  --color-text: #1A1D2E;
  --color-text-muted: #5A5F7A;
  --color-text-faint: #9498B0;
  --color-text-inverse: #F5F6FA;

  --color-primary: #1B3A6B;
  --color-primary-hover: #14305A;
  --color-primary-active: #0E244A;
  --color-primary-highlight: #D4DFF0;

  --color-accent: #C5993E;
  --color-accent-hover: #B08830;
  --color-accent-active: #9A7625;

  --color-success: #2D7A3E;
  --color-error: #A12C3D;

  --shadow-sm: 0 1px 3px rgba(26, 29, 46, 0.06);
  --shadow-md: 0 4px 14px rgba(26, 29, 46, 0.08);
  --shadow-lg: 0 12px 36px rgba(26, 29, 46, 0.12);
}

/* ---- DARK MODE ---- */
[data-theme='dark'] {
  --color-bg: #0E1019;
  --color-surface: #161827;
  --color-surface-2: #1C1E30;
  --color-surface-offset: #1A1C2C;
  --color-divider: #282B40;
  --color-border: #33375A;

  --color-text: #D4D6E4;
  --color-text-muted: #8B8FA8;
  --color-text-faint: #5C6080;
  --color-text-inverse: #0E1019;

  --color-primary: #6B9ADB;
  --color-primary-hover: #5588CC;
  --color-primary-active: #4477BB;
  --color-primary-highlight: #1E2942;

  --color-accent: #DDB963;
  --color-accent-hover: #CCA94F;
  --color-accent-active: #BB993D;

  --color-success: #5BAA6A;
  --color-error: #D46475;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0E1019;
    --color-surface: #161827;
    --color-surface-2: #1C1E30;
    --color-surface-offset: #1A1C2C;
    --color-divider: #282B40;
    --color-border: #33375A;
    --color-text: #D4D6E4;
    --color-text-muted: #8B8FA8;
    --color-text-faint: #5C6080;
    --color-text-inverse: #0E1019;
    --color-primary: #6B9ADB;
    --color-primary-hover: #5588CC;
    --color-primary-active: #4477BB;
    --color-primary-highlight: #1E2942;
    --color-accent: #DDB963;
    --color-accent-hover: #CCA94F;
    --color-accent-active: #BB993D;
    --color-success: #5BAA6A;
    --color-error: #D46475;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.5);
  }
}

/* ===== LAYOUT ===== */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow 0.3s ease;
}
.header--scrolled {
  box-shadow: var(--shadow-sm);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
  gap: var(--space-6);
}
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.header__logo-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: var(--radius-sm);
}
.header__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.02em;
}
.header__logo-text span {
  color: var(--color-accent);
}

/* Nav */
.nav { display: flex; align-items: center; gap: var(--space-6); }
.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  position: relative;
  padding-block: var(--space-1);
}
.nav__link:hover { color: var(--color-text); }
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.3s ease;
}
.nav__link:hover::after { width: 100%; }

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}
.theme-toggle:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

/* Mobile hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  height: 28px;
  justify-content: center;
  align-items: center;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100dvh;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-16) var(--space-8);
    gap: var(--space-4);
    transition: right 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: var(--shadow-lg);
    z-index: 100;
  }
  .nav.open { right: 0; }
  .nav__link { font-size: var(--text-base); }
  .nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 99;
  }
  .nav-overlay.open { display: block; }
}

/* ===== HERO ===== */
.hero {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  position: relative;
  overflow: hidden;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  max-width: 18ch;
}
.hero__title em {
  font-style: normal;
  color: var(--color-accent);
}
.hero__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  max-width: 50ch;
}
.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero__graphic {
  width: 100%;
  max-width: 460px;
  aspect-ratio: 1;
  position: relative;
}
/* Decorative circle behind visual */
.hero__graphic::before {
  content: '';
  position: absolute;
  inset: -10%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-primary-highlight) 0%, transparent 70%);
  opacity: 0.5;
}

@media (max-width: 768px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero__title { max-width: none; }
  .hero__desc { max-width: none; margin-inline: auto; }
  .hero__actions { justify-content: center; }
  .hero__visual { order: -1; }
  .hero__graphic { max-width: 280px; }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  border: none;
  white-space: nowrap;
  line-height: 1.4;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
}
.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-border);
}
.btn--outline:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
}
.btn--accent {
  background: var(--color-accent);
  color: #1A1D2E;
}
.btn--accent:hover {
  background: var(--color-accent-hover);
}

/* ===== SECTIONS ===== */
.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}
.section--alt {
  background: var(--color-surface-2);
}
.section__header {
  text-align: center;
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-16));
}
.section__label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
}
.section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.section__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-inline: auto;
}

/* ===== SERVICES ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}
.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.service-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-highlight);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
  color: var(--color-primary);
}
.service-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.service-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===== WHY US (stats + text) ===== */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
.why-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
}
.stat-card__value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}
.stat-card__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.why-content__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}
.why-features {
  list-style: none;
  padding: 0;
}
.why-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.why-features li svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-accent);
}

@media (max-width: 768px) {
  .why-grid { grid-template-columns: 1fr; }
}

/* ===== CONTACT FORM ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}
.contact-info {
  padding: var(--space-8);
}
.contact-info__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}
.contact-info__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}
.contact-details {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.contact-details li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.contact-details li svg {
  flex-shrink: 0;
  color: var(--color-primary);
}
.contact-details li a {
  color: var(--color-text-muted);
  text-decoration: none;
}
.contact-details li a:hover {
  color: var(--color-primary);
}

.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}
.form-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}
.form-group {
  margin-bottom: var(--space-5);
}
.form-group label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-2);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}
.form-group textarea {
  resize: vertical;
  min-height: 100px;
}
.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 24 24' fill='none' stroke='%235A5F7A' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: var(--space-10);
}

.form-message {
  display: none;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-4);
}
.form-message--success {
  background: color-mix(in srgb, var(--color-success) 12%, transparent);
  color: var(--color-success);
  display: block;
}
.form-message--error {
  background: color-mix(in srgb, var(--color-error) 12%, transparent);
  color: var(--color-error);
  display: block;
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12);
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer__links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  padding: 0;
}
.footer__links a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
}
.footer__links a:hover {
  color: var(--color-primary);
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== PROCESS SECTION ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  counter-reset: step;
}
.process-step {
  text-align: center;
  padding: var(--space-6);
  position: relative;
}
.process-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}
.process-step__title {
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.process-step__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .process-steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .process-steps { grid-template-columns: 1fr; }
}

/* ===== TELEGRAM BANNER ===== */
.tg-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-active) 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-10) var(--space-12);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-block: var(--space-4);
}
.tg-banner__text {
  color: var(--color-text-inverse);
}
.tg-banner__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.tg-banner__desc {
  font-size: var(--text-sm);
  opacity: 0.85;
}
.btn--tg {
  background: #fff;
  color: var(--color-primary);
  font-weight: 700;
}
.btn--tg:hover {
  background: var(--color-surface-2);
}

@media (max-width: 768px) {
  .tg-banner {
    padding: var(--space-8);
    text-align: center;
    flex-direction: column;
  }
}

/* ===== CHECKBOX CONSENT ===== */
.form-group--checkbox {
  margin-bottom: var(--space-4);
}
.form-group--checkbox label.checkbox-label {
  text-transform: none;
  letter-spacing: normal;
  font-weight: 400;
}
.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}
.checkbox-label input[type='checkbox'] {
  width: 18px;
  height: 18px;
  min-width: 18px;
  margin-top: 1px;
  accent-color: var(--color-primary);
  cursor: pointer;
}
.checkbox-label a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.checkbox-label a:hover {
  color: var(--color-primary-hover);
}
.checkbox-label--error span {
  color: var(--color-error);
}

/* ===== COOKIE BANNER ===== */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.12);
  padding: var(--space-6);
  animation: slideUp 0.4s ease;
}
@keyframes slideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}
.cookie-banner[hidden] {
  display: none;
}
.cookie-banner__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.cookie-banner__text {
  flex: 1 1 320px;
}
.cookie-banner__title {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.cookie-banner__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
  max-width: none;
}
.cookie-banner__desc a {
  color: var(--color-primary);
  text-decoration: underline;
}
.cookie-banner__categories {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  align-items: center;
}
.cookie-cat {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  cursor: pointer;
  white-space: nowrap;
}
.cookie-cat input[type='checkbox'] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}
.cookie-cat input:disabled {
  opacity: 0.6;
}
.cookie-banner__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.cookie-btn {
  font-size: var(--text-xs) !important;
  padding: var(--space-2) var(--space-4) !important;
}
@media (max-width: 768px) {
  .cookie-banner__inner {
    flex-direction: column;
    align-items: stretch;
  }
  .cookie-banner__actions {
    justify-content: stretch;
  }
  .cookie-btn {
    flex: 1;
    justify-content: center;
  }
}

/* ===== FORM LOADING ===== */
.btn--loading {
  pointer-events: none;
  opacity: 0.7;
}
.btn--loading::after {
  content: '';
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-text-inverse);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-left: var(--space-2);
}
@keyframes spin {
  to { transform: rotate(360deg); }
}