/* ==========================================================================
   Eminent DigiTech — components.css
   Reusable pieces: brand, header/nav, buttons, cards, form controls.
   ========================================================================== */

/* --- Brand -------------------------------------------------------------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  line-height: 1;
}
.brand:hover { color: var(--ink); }

.brand__mark { color: var(--primary-bright); flex: none; }

.brand__name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.005em;
  white-space: nowrap;
}
.brand__name-accent { color: var(--primary-soft); }
.brand__name-accent::before { content: " "; }

/* --- Header / nav ------------------------------------------------------- */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  background: rgba(26, 35, 44, 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(26, 35, 44, 0.94);
  border-bottom-color: var(--line);
}

.site-header__inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2rem);
}

.primary-nav a:not(.btn) {
  color: var(--ink-soft);
  font-size: var(--step--1);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: relative;
  padding-block: 0.4rem;
}

.primary-nav a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--primary-soft);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s var(--ease);
}

.primary-nav a:not(.btn):hover { color: var(--ink); }
.primary-nav a:not(.btn):hover::after,
.primary-nav a[aria-current="true"]::after { transform: scaleX(1); }

/* Mobile toggle */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0;
  place-items: center;
  align-content: center;
  justify-content: center;
  gap: 5px;
  flex-direction: column;
}

.nav-toggle__bar {
  display: block;
  width: 18px; height: 1.5px;
  background: var(--ink);
  transition: transform 0.28s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(6.5px) 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(-6.5px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }

  .primary-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--line);
    padding: var(--space-md) clamp(1.25rem, 5vw, 3rem) var(--space-lg);
    transform: translateY(-120%);
    transition: transform 0.35s var(--ease);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }

  .primary-nav.is-open { transform: translateY(0); }

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .primary-nav__list > li { border-bottom: 1px solid var(--line); }
  .primary-nav__list > li:last-child { border-bottom: 0; padding-top: var(--space-md); }

  .primary-nav a:not(.btn) {
    display: block;
    padding: 0.95rem 0;
    font-size: 1rem;
    text-transform: none;
    letter-spacing: 0;
  }
  .primary-nav a:not(.btn)::after { display: none; }
  .primary-nav .btn { width: 100%; }
}

/* --- Buttons ----------------------------------------------------------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-bd: var(--line-strong);

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  font-family: var(--font-sans);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.25s var(--ease), color 0.25s var(--ease),
              border-color 0.25s var(--ease), transform 0.25s var(--ease);
  text-align: center;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  --btn-bg: var(--primary);
  --btn-fg: var(--on-primary);
  --btn-bd: var(--primary);
}
.btn--primary:hover { --btn-bg: var(--primary-bright); --btn-bd: var(--primary-bright); color: var(--on-primary); }

.btn--ghost { --btn-fg: var(--ink); }
.btn--ghost:hover { --btn-bd: var(--line-primary); --btn-bg: var(--primary-wash); color: var(--ink); }

.btn--sm { padding: 0.55rem 1rem; }
.btn--lg { padding: 1rem 2rem; }
.btn--block { width: 100%; }

.btn[disabled], .btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

/* --- Cards ------------------------------------------------------------- */
.card-grid {
  display: grid;
  gap: clamp(1rem, 2vw, 1.5rem);
}
.card-grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }

.card {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2rem);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease),
              transform 0.3s var(--ease);
}

.card:hover {
  border-color: var(--line-primary);
  background: var(--bg-panel-2);
  transform: translateY(-2px);
}

.card__icon {
  display: inline-flex;
  color: var(--primary-soft);
  margin-bottom: 1.25rem;
}

.card__title {
  font-size: var(--step-2);
  margin-bottom: 0.6rem;
}

.card__text {
  color: var(--ink-soft);
  font-size: var(--step-0);
  margin: 0;
}

/* --- Form controls ----------------------------------------------------- */
.field { margin-bottom: var(--space-sm); }

.field > label {
  display: block;
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.45rem;
}

.field__opt { text-transform: none; letter-spacing: 0; }
.req { color: var(--primary-soft); }

.field input[type="text"],
.field input[type="email"],
.field select,
.field textarea {
  width: 100%;
  background: var(--bg-deep);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
  color: var(--ink);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.field textarea { resize: vertical; min-height: 7rem; }

.field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-muted) 50%),
                    linear-gradient(135deg, var(--ink-muted) 50%, transparent 50%);
  background-position: calc(100% - 1.15rem) 1.25rem, calc(100% - 0.8rem) 1.25rem;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2.5rem;
}
.field select option { background: var(--bg-panel); color: var(--ink); }

.field input:hover, .field textarea:hover, .field select:hover { border-color: var(--line-primary); }
.field input:focus, .field textarea:focus, .field select:focus { background: #121820; }

.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] { border-color: var(--danger); }

.field__error {
  color: var(--danger);
  font-size: var(--step--1);
  margin: 0.4rem 0 0;
}

.field--consent {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.15rem 0.7rem;
  align-items: start;
  margin-top: var(--space-md);
}

.field--consent input[type="checkbox"] {
  width: 1.05rem; height: 1.05rem;
  margin: 0.32rem 0 0;
  accent-color: var(--primary);
  flex: none;
}

.field--consent > label {
  text-transform: none;
  letter-spacing: 0;
  font-size: var(--step--1);
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.55;
}

.field--consent .field__error { grid-column: 2; }

/* Honeypot — kept out of the flow and out of the a11y tree, never "display:none"
   alone so naive bots still find and fill it. */
.hp-field {
  position: absolute !important;
  left: -9999px;
  width: 1px; height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.form-status {
  margin: var(--space-sm) 0 0;
  font-size: var(--step--1);
  min-height: 1.4em;
}
.form-status.is-error { color: var(--danger); }
.form-status.is-success { color: var(--success); }

.form-note {
  margin: var(--space-xs) 0 0;
  font-size: var(--step--1);
  color: var(--ink-muted);
}