/* ==============================================
   LAYOUT — THE СВЯЗКИ MATRIX
   Page structure, grid, header, backgrounds
   ============================================== */

/* ── Reset & Base ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
}

/* ── Dot Pattern Background (matches baza.tonytrue.pro) ── */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: var(--z-bg);
  pointer-events: none;
  overflow: hidden;
  background-image: radial-gradient(#27272a 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000 60%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000 60%, transparent 100%);
}

.bg-grid::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at 50% 0%,
    rgba(204, 255, 0, 0.05) 0%,
    transparent 60%
  );
}

/* ── App Container ── */
.app {
  position: relative;
  z-index: var(--z-content);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ── */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: var(--space-md) var(--space-lg);
  background: rgba(5, 5, 5, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__logo-img {
  height: 28px;
  filter: drop-shadow(0 0 10px rgba(204, 255, 0, 0.3));
}

.header__title-text {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  text-shadow: 0 0 20px var(--color-primary-glow);
  letter-spacing: 0.05em;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__stats {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header__progress {
  flex: 1;
}

.header__progress-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
}

.header__xp {
  font-size: var(--fs-xs);
  color: var(--color-primary);
  font-weight: var(--fw-bold);
}

.header__level {
  font-size: var(--fs-xs);
  color: var(--color-text-dim);
}

/* Reset Button */
.btn-reset {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-reset:hover {
  color: var(--color-error);
  border-color: var(--color-error);
}

/* ── Main Content ── */
.main {
  flex: 1;
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
  width: 100%;
}

/* ── Island Map ── */
.island-map {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── Footer ── */
.footer {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
}

.footer a {
  color: var(--color-primary);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* ── Responsive ── */
@media (max-width: 480px) {
  .header {
    padding: var(--space-sm) var(--space-md);
  }

  .header__title {
    font-size: var(--fs-md);
  }

  .main {
    padding: var(--space-xl) var(--space-md);
  }

  .modal {
    padding: var(--space-xl);
  }

  .modal__title {
    font-size: var(--fs-lg);
  }

  .island-node {
    padding: var(--space-lg);
  }

  .island-node__icon {
    width: 56px;
    height: 56px;
    font-size: 1.75rem;
  }

  .toast-container {
    left: var(--space-md);
    right: var(--space-md);
  }
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary-dim);
  border-radius: 3px;
}

/* ── Selection ── */
::selection {
  background: var(--color-primary-dim);
  color: var(--color-primary);
}