/* =========================================================
   NASDAN — Partnerships page
   Extends tokens.css / main.css. Hero reuses the site's navy
   dot-grid + amber-glow treatment (contact.css / governments.css)
   with an original two-column layout and a hand-built "partner
   ecosystem" constellation graphic — no reference image was
   received with this request, so this is an original design in
   NASDAN's colors. The partner directory borrows the bordered,
   grouped-grid language of services.css's .svc-grid. The closing
   form section is a dark (navy) variant of the light-background
   .form-row / .form-field pattern used on contact.css /
   request-quote.css / stem-robotics.css. Shared components
   (cta-panel, btn-nasdan, eyebrow, section-head, container-nasdan)
   live in main.css.
   ========================================================= */

.eyebrow-mark { width: 8px; height: 8px; background: var(--nasdan-amber); flex: none; border-radius: 2px; }

/* =========================================================
   HERO — navy, two-column, constellation graphic
   ========================================================= */
.ptn-hero {
  position: relative;
  padding-block: var(--sp-9) var(--sp-9);
  background: linear-gradient(150deg, var(--nasdan-navy) 0%, var(--nasdan-navy-700) 100%);
  overflow: hidden;
}
.ptn-hero-texture {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.14) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(circle at 30% 40%, #000, transparent 68%);
  mask-image: radial-gradient(circle at 30% 40%, #000, transparent 68%);
  pointer-events: none;
}
.ptn-hero-stripe {
  position: absolute; top: -12%; right: -6%; width: 44%; aspect-ratio: 1/1; height: auto;
  background: radial-gradient(circle, rgba(255,193,7,0.26) 0%, rgba(255,193,7,0) 70%);
  filter: blur(6px); pointer-events: none;
}
.ptn-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: var(--sp-8); align-items: center; }
.ptn-hero-eyebrow { display: inline-flex; align-items: center; gap: var(--sp-2); margin-bottom: var(--sp-3); color: var(--nasdan-amber); }
.ptn-hero-eyebrow .eyebrow-mark { background: var(--nasdan-amber); }
.ptn-hero-headline {
  font-size: var(--fs-h1); font-weight: var(--fw-light); letter-spacing: var(--ls-tight);
  line-height: var(--lh-tight); color: var(--white); margin-bottom: var(--sp-4); max-width: 18ch;
}
.ptn-hero-headline em { color: var(--nasdan-amber); font-style: normal; }
.ptn-hero-lead { font-size: var(--fs-body); max-width: 50ch; margin-bottom: var(--sp-6); color: var(--paper-300); line-height: var(--lh-relaxed); }
.ptn-hero-actions { display: flex; gap: var(--sp-3); flex-wrap: wrap; }
.ptn-hero-actions .btn-ghost-nasdan { color: var(--white); border-color: rgba(255,255,255,0.32); }
.ptn-hero-actions .btn-ghost-nasdan:hover { background: rgba(255,255,255,0.08); border-color: var(--white); }
.ptn-hero-visual { display: flex; align-items: center; justify-content: center; }
.ptn-hero-graphic { width: 100%; max-width: 440px; height: auto; }

/* =========================================================
   PARTNERS — grouped bordered card grid
   ========================================================= */
.ptn-partners { padding-block: var(--section-pad-y); }
.ptn-partners .section-head { max-width: 640px; }

.ptn-group { margin-bottom: var(--sp-9); }
.ptn-group:last-child { margin-bottom: 0; }
.ptn-group-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-4);
  padding-bottom: var(--sp-3); margin-bottom: var(--sp-5); border-bottom: 1px solid var(--ink-200);
}
.ptn-group-head h3 { font-size: 1.0625rem; font-weight: var(--fw-medium); color: var(--ink-900); margin: 0; }
.ptn-group-head span { font-size: 0.8125rem; color: var(--ink-400); white-space: nowrap; }

.ptn-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--ink-200); border-left: 1px solid var(--ink-200); }
.ptn-card {
  display: flex; align-items: center; gap: var(--sp-4);
  padding: var(--sp-6); border-right: 1px solid var(--ink-200); border-bottom: 1px solid var(--ink-200);
  transition: background-color var(--dur-base) var(--ease-out);
}
.ptn-card:hover { background: var(--cloud); }
.ptn-card-icon {
  display: flex; align-items: center; justify-content: center; flex: none;
  width: 44px; height: 44px; border-radius: var(--radius-md); background: var(--cloud);
  color: var(--ink-500); transition: color var(--dur-base) var(--ease-out), background-color var(--dur-base) var(--ease-out);
}
.ptn-card-icon svg { width: 22px; height: 22px; }
.ptn-card:hover .ptn-card-icon { color: var(--brand, var(--nasdan-navy)); background: var(--white); box-shadow: var(--shadow-sm); }
.ptn-card-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.ptn-card-body strong { font-size: 0.9375rem; font-weight: var(--fw-medium); color: var(--ink-900); }
.ptn-card-body span { font-size: 0.8125rem; color: var(--ink-400); }

/* =========================================================
   WHY PARTNER — bordered numbered benefit grid
   ========================================================= */
.ptn-why { padding-block: var(--section-pad-y); background: var(--cloud); }
.ptn-why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--ink-200); border-left: 1px solid var(--ink-200); background: var(--white); }
.ptn-why-item { padding: var(--sp-6); border-right: 1px solid var(--ink-200); border-bottom: 1px solid var(--ink-200); }
.ptn-why-num { font-size: 0.75rem; font-weight: var(--fw-semibold); letter-spacing: var(--ls-wider); color: var(--nasdan-amber); font-variant-numeric: tabular-nums; display: block; margin-bottom: var(--sp-4); }
.ptn-why-item h3 { font-size: 1.0625rem; font-weight: var(--fw-medium); color: var(--ink-900); margin: 0 0 var(--sp-3); }
.ptn-why-item p { font-size: 0.875rem; color: var(--ink-500); line-height: var(--lh-relaxed); margin: 0; }

/* =========================================================
   CONTACT US TO PARTNER — navy background form section
   ========================================================= */
.ptn-form-section {
  position: relative; padding-block: var(--section-pad-y);
  background: linear-gradient(160deg, var(--nasdan-navy) 0%, var(--nasdan-navy-800) 100%);
  overflow: hidden;
}
.ptn-form-texture {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.1) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(circle at 80% 20%, #000, transparent 65%);
  mask-image: radial-gradient(circle at 80% 20%, #000, transparent 65%);
  pointer-events: none;
}
/* min-width: 0 on the grid items prevents an unshrinkable textarea from
   forcing its column wider than the container -- same grid-blowout fix
   used on contact.css / request-quote.css. */
.ptn-form-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 0.85fr 1.15fr; gap: var(--sp-9); align-items: start; }
.ptn-form-grid > * { min-width: 0; }

.ptn-form-copy h2 { margin: var(--sp-3) 0 var(--sp-4); }
.ptn-form-points { list-style: none; margin: var(--sp-7) 0 0; padding: 0; display: flex; flex-direction: column; gap: var(--sp-3); }
.ptn-form-points li { position: relative; padding-left: var(--sp-6); font-size: 0.9375rem; color: var(--paper-100); }
.ptn-form-points li::before {
  content: ""; position: absolute; left: 0; top: 0.45em; width: 8px; height: 8px;
  border-radius: 2px; background: var(--nasdan-amber);
}

.ptn-form { display: flex; flex-direction: column; gap: var(--sp-5); background: rgba(255,255,255,0.04); border: 1px solid var(--paper-border); border-radius: var(--radius-lg); padding: var(--sp-7); }
.ptn-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-5); }
.ptn-form .form-row > .form-field { min-width: 0; }
.ptn-form .form-field { display: flex; flex-direction: column; gap: var(--sp-2); }
.ptn-form .form-field label { font-size: 0.8125rem; font-weight: var(--fw-medium); color: var(--paper-100); }
.ptn-form .form-field label span { color: var(--paper-300); font-weight: var(--fw-regular); }
.ptn-form .form-field input,
.ptn-form .form-field textarea {
  width: 100%;
  font-family: var(--font-sans); font-size: 0.9375rem; color: var(--white);
  background: rgba(255,255,255,0.06); border: 1px solid var(--paper-border); border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem; transition: border-color var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), background-color var(--dur-base) var(--ease-out);
}
.ptn-form .form-field input::placeholder,
.ptn-form .form-field textarea::placeholder { color: var(--paper-300); opacity: 0.7; }
.ptn-form .form-field input:focus,
.ptn-form .form-field textarea:focus { outline: none; border-color: var(--nasdan-amber); background: rgba(255,255,255,0.09); box-shadow: 0 0 0 3px rgba(255,193,7,0.18); }
.ptn-form .form-field textarea { resize: vertical; min-height: 110px; }

/* Server-side validation errors -- this panel is dark/navy, unlike the
   light-background contact.css/request-quote.css/stem-robotics.css forms
   it otherwise mirrors, so it needs its own on-dark error color (same
   #ffb4b4 used for the same purpose on blog.css's dark subscribe card)
   rather than their #8a1f1f, which would be nearly invisible here. */
.ptn-form .form-field.has-error input,
.ptn-form .form-field.has-error textarea { border-color: #ffb4b4; }
.ptn-form .form-field-error { display: block; font-size: 0.8125rem; color: #ffb4b4; margin-top: 2px; }

.ptn-form-submit { display: flex; align-items: center; gap: var(--sp-5); flex-wrap: wrap; margin-top: var(--sp-2); }
.ptn-form-note { font-size: 0.8125rem; color: var(--paper-300); }
.ptn-form-success { color: var(--nasdan-amber); font-weight: var(--fw-medium); margin: 0 0 var(--sp-2); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1023.98px) {
  .ptn-hero-grid { grid-template-columns: 1fr; text-align: left; }
  .ptn-hero-visual { order: -1; max-width: 320px; margin-inline: auto; }
  .ptn-grid { grid-template-columns: repeat(2, 1fr); }
  .ptn-why-grid { grid-template-columns: repeat(2, 1fr); }
  .ptn-form-grid { grid-template-columns: 1fr; gap: var(--sp-7); }
}

@media (max-width: 767.98px) {
  .ptn-hero { padding-block: var(--sp-8); }
  .ptn-hero-headline { font-size: clamp(2.1rem, 1.6rem + 3vw, 2.9rem); }
  .ptn-grid { grid-template-columns: 1fr; }
  .ptn-why-grid { grid-template-columns: 1fr; }
  .ptn-form .form-row { grid-template-columns: 1fr; }
  .ptn-form { padding: var(--sp-5); }
  .ptn-form-submit { flex-direction: column; align-items: stretch; text-align: center; }
}