/* ==========================================================================
   RenderFrost SMP — 03 Layout primitives and shared components
   ========================================================================== */

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.shell--wide { max-width: var(--shell-wide); }
.shell--prose { max-width: var(--shell-prose); }

.section {
  padding-block: var(--section-y);
  position: relative;
}

.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }

.section-head {
  margin-bottom: clamp(2.25rem, 4vw, 3.5rem);
}

.section-head h2 {
  max-width: 24ch;
}

.section-head > p:not(.eyebrow) {
  max-width: 62ch;
  color: var(--text-muted);
}

.section-head--center {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Hairline that reads as a seam of light, not a hard rule. */
.seam {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, transparent, var(--hairline) 18%,
    var(--glass-border) 50%, var(--hairline) 82%, transparent);
}

.grid {
  display: grid;
  gap: clamp(1rem, 1.6vw, 1.5rem);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stack { display: grid; gap: 1rem; }

.divider-orn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  color: var(--violet-400);
  opacity: 0.6;
}

.divider-orn::before,
.divider-orn::after {
  content: "";
  height: 1px;
  flex: 1;
  max-width: 180px;
  background: linear-gradient(90deg, transparent, var(--glass-border));
}

.divider-orn::after {
  background: linear-gradient(270deg, transparent, var(--glass-border));
}

.divider-orn svg { width: 14px; height: 14px; flex: none; }

/* ------------------------------------------------------------------ Buttons */

.btn {
  --btn-bg: transparent;
  --btn-fg: var(--text-primary);
  --btn-border: var(--glass-border);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 46px;
  padding: 0.7rem 1.35rem;
  border: 1px solid var(--btn-border);
  border-radius: var(--r-md);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: transform var(--t-fast) var(--ease),
    border-color var(--t-base) var(--ease),
    background-color var(--t-base) var(--ease),
    color var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
  border-color: var(--glass-border-strong);
}

.btn:active { transform: translateY(0) scale(0.985); }

.btn__icon { flex: none; width: 16px; height: 16px; }

.btn--primary {
  --btn-fg: #fff;
  --btn-border: rgba(196, 181, 253, 0.42);
  background: linear-gradient(180deg, var(--violet-500), var(--violet-700));
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover { background: linear-gradient(180deg, #9b6ff8, #5b39b4); }

/* One short light sweep — primary CTAs only. */
.btn--primary::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 -60%;
  z-index: -1;
  width: 45%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.22), transparent);
  transform: skewX(-18deg);
  transition: left 620ms var(--ease-out);
}

.btn--primary:hover::after { left: 115%; }

.btn--secondary {
  --btn-bg: var(--surface-1);
  --btn-border: var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn--secondary:hover { --btn-bg: var(--surface-2); }

.btn--ghost {
  --btn-fg: var(--text-secondary);
  --btn-border: transparent;
  padding-inline: 0.5rem;
}

.btn--ghost:hover { --btn-fg: var(--frost-100); }

.btn--icon {
  min-height: 40px;
  width: 40px;
  padding: 0;
  border-radius: var(--r-md);
}

.btn[disabled],
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn[disabled]::after,
.btn[aria-disabled="true"]::after { display: none; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.btn-row--center {
  justify-content: center;
  margin-top: clamp(2rem, 4vw, 2.75rem);
}

/* -------------------------------------------------------- Copy-IP control */

.copyip {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--glass-border);
  border-radius: var(--r-md);
  background: var(--surface-1);
  backdrop-filter: blur(12px);
  overflow: hidden;
  max-width: 100%;
}

.copyip__addr {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.7rem 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  letter-spacing: 0.02em;
  color: var(--frost-200);
  user-select: all;
  white-space: nowrap;
}

.copyip__dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--violet-400);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.18);
}

.copyip__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding-inline: 1rem;
  border: 0;
  border-left: 1px solid var(--glass-border);
  background: rgba(109, 63, 212, 0.16);
  color: var(--frost-200);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color var(--t-base) var(--ease),
    color var(--t-base) var(--ease);
}

.copyip__btn:hover {
  background: rgba(139, 92, 246, 0.30);
  color: #fff;
}

.copyip__btn .btn__icon { width: 14px; height: 14px; }