/* Zentrix Partners — placeholder light theme. Designer-friendly hooks via data-* and BEM-ish class names. */

:root {
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-surface-alt: #f7f7f8;
  --color-border: #e5e5e7;
  --color-border-strong: #d0d0d4;
  --color-text: #111111;
  --color-text-muted: #5b5b63;
  --color-text-subtle: #8a8a92;
  --color-accent: #111111;
  --color-accent-text: #ffffff;
  --color-danger: #c0322b;
  --color-success: #1f7a3a;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --max-content: 1200px;
  --max-narrow: 720px;
  --max-form: 640px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
}

/* Reset / base */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  margin: 0 0 var(--space-4);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 2.5vw, 1.875rem); }
h3 { font-size: 1.125rem; }

p {
  margin: 0 0 var(--space-4);
  color: var(--color-text);
}

a {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

img, svg {
  display: block;
  max-width: 100%;
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: var(--space-7) 0;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.container--narrow {
  max-width: var(--max-narrow);
}

.container--form {
  max-width: var(--max-form);
}

.section {
  padding: var(--space-8) 0;
}

.section--tight {
  padding: var(--space-7) 0;
}

.section--alt {
  background: var(--color-surface-alt);
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 64px;
}

.site-header__brand {
  font-weight: 700;
  font-size: 1.125rem;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.site-header__login {
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.9375rem;
}

.site-header__login:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
  margin-top: var(--space-8);
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.site-footer__links {
  display: flex;
  gap: var(--space-5);
}

.site-footer__links a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.site-footer__links a:hover {
  text-decoration: underline;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 20px;
  min-height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: opacity 120ms ease, background 120ms ease, border-color 120ms ease;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-accent-text);
  border-color: var(--color-accent);
}

.btn--primary:hover {
  opacity: 0.88;
}

.btn--secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn--secondary:hover {
  background: var(--color-surface-alt);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: transparent;
}

.btn--ghost:hover {
  background: var(--color-surface-alt);
}

.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn[hidden] { display: none; }

/* Hero */
.hero {
  padding: var(--space-9) 0 var(--space-8);
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.hero__title {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  max-width: 18ch;
  margin-bottom: var(--space-5);
}

.hero__sub {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-6);
}

.hero__cta {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.hero__note {
  font-size: 0.875rem;
  color: var(--color-text-subtle);
}

/* Steps (How it works) */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.step {
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--color-accent);
  color: var(--color-accent-text);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.step__title {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.step__desc {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Two-column lists */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7);
}

.criteria-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.criteria-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.criteria-list li:last-child { border-bottom: 0; }

.criteria-list .icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.criteria-list--allow .icon { color: var(--color-success); }
.criteria-list--deny .icon { color: var(--color-danger); }

/* Categories */
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.pill {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.875rem;
  background: var(--color-bg);
  color: var(--color-text);
}

.muted {
  color: var(--color-text-muted);
}

.subtle {
  color: var(--color-text-subtle);
}

.section-eyebrow {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.section-title {
  margin-bottom: var(--space-6);
  max-width: 28ch;
}

/* FAQ */
.faq__item {
  border-bottom: 1px solid var(--color-border);
}

.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-5) 0;
  font-weight: 500;
  font-size: 1.0625rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.faq__item summary::-webkit-details-marker { display: none; }

.faq__item summary::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text-muted);
  transition: transform 150ms ease;
}

.faq__item[open] summary::after {
  content: "–";
}

.faq__body {
  padding: 0 0 var(--space-5);
  color: var(--color-text-muted);
  max-width: 70ch;
}

/* Final CTA */
.cta-block {
  text-align: center;
  padding: var(--space-8) 0;
}

.cta-block h2 { margin-bottom: var(--space-3); }

.cta-block p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.cta-block .btn { margin-bottom: var(--space-3); }

/* Standards page layout */
.standards-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-8);
  align-items: flex-start;
}

.standards-toc {
  position: sticky;
  top: 88px;
  font-size: 0.9375rem;
}

.standards-toc h2 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.standards-toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: toc;
}

.standards-toc li {
  counter-increment: toc;
  margin-bottom: var(--space-2);
}

.standards-toc a {
  text-decoration: none;
  color: var(--color-text-muted);
  display: block;
  padding: 6px 0;
  line-height: 1.4;
}

.standards-toc a::before {
  content: counter(toc) ". ";
  color: var(--color-text-subtle);
}

.standards-toc a:hover { color: var(--color-text); }

.standards-content section {
  margin-bottom: var(--space-7);
  scroll-margin-top: 88px;
}

.standards-content h2 {
  font-size: 1.375rem;
  margin-bottom: var(--space-3);
}

.standards-content p {
  color: var(--color-text);
  max-width: 70ch;
}

.standards-meta {
  font-size: 0.875rem;
  color: var(--color-text-subtle);
  margin-top: var(--space-3);
}

.back-link {
  display: inline-block;
  margin-top: var(--space-5);
  text-decoration: none;
  color: var(--color-text-muted);
}

.back-link:hover { color: var(--color-text); text-decoration: underline; }

/* Form */
.apply-wrap {
  padding: var(--space-7) 0 var(--space-8);
}

.apply-header {
  margin-bottom: var(--space-6);
}

.apply-progress {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.apply-progress__label {
  font-size: 0.875rem;
  font-weight: 500;
}

.apply-progress__draft {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
  min-height: 1.2em;
}

.apply-progress__bar {
  width: 100%;
  height: 6px;
  background: var(--color-surface-alt);
  border-radius: 999px;
  overflow: hidden;
}

.apply-progress__fill {
  height: 100%;
  background: var(--color-accent);
  width: 20%;
  transition: width 200ms ease;
}

.fieldset {
  border: 0;
  padding: 0;
  margin: 0 0 var(--space-6);
}

.fieldset[hidden] { display: none; }

.fieldset__legend {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  padding: 0;
}

.fieldset__intro {
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.field {
  margin-bottom: var(--space-5);
}

.field__label {
  display: block;
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.field__hint {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
  margin-top: var(--space-2);
}

.field__error {
  font-size: 0.8125rem;
  color: var(--color-danger);
  margin-top: var(--space-2);
  min-height: 1.1em;
}

.required {
  color: var(--color-danger);
  margin-left: 2px;
}

.input,
.select,
.textarea {
  width: 100%;
  padding: 12px 14px;
  min-height: 44px;
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  transition: border-color 120ms ease;
}

.input:focus,
.select:focus,
.textarea:focus {
  border-color: var(--color-text);
  outline: 2px solid var(--color-text);
  outline-offset: 1px;
}

.input.is-invalid,
.select.is-invalid,
.textarea.is-invalid,
.checkbox-group.is-invalid,
.file-field.is-invalid {
  border-color: var(--color-danger);
}

.textarea {
  min-height: 120px;
  resize: vertical;
}

.checkbox-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--color-bg);
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--color-bg);
}

.option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: 6px 0;
  font-size: 0.9375rem;
  cursor: pointer;
}

.option input {
  margin-top: 2px;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.file-field {
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--color-surface-alt);
}

.file-field input[type="file"] {
  display: block;
  font-size: 0.9375rem;
}

.file-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.file-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
}

.file-list button {
  border: 0;
  background: transparent;
  color: var(--color-danger);
  font-size: 0.875rem;
  cursor: pointer;
  padding: 4px 8px;
}

.char-counter {
  display: block;
  text-align: right;
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  margin-top: var(--space-1);
}

.standards-summary {
  list-style: none;
  margin: 0 0 var(--space-5);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.standards-summary li {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.standards-summary li:last-child { border-bottom: 0; }

.standards-summary strong { display: block; font-weight: 600; margin-bottom: 2px; font-size: 0.9375rem; }
.standards-summary span { color: var(--color-text-muted); font-size: 0.875rem; }

.agreement {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  margin-bottom: var(--space-5);
}

.agreement input { width: 18px; height: 18px; margin-top: 2px; flex-shrink: 0; }
.agreement label { font-size: 0.9375rem; line-height: 1.5; cursor: pointer; }

.form-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  align-items: center;
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.form-nav .spacer { flex: 1; }

/* Thank-you */
.thanks {
  padding: var(--space-9) 0;
  text-align: center;
}

.thanks h1 { margin-bottom: var(--space-4); }

.thanks p { color: var(--color-text-muted); max-width: 50ch; margin: 0 auto var(--space-6); }

.next-list {
  text-align: left;
  max-width: 520px;
  margin: 0 auto var(--space-6);
  list-style: none;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.next-list li {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.next-list li:last-child { border-bottom: 0; }

.next-list strong { display: block; margin-bottom: 2px; }

.next-list span { color: var(--color-text-muted); font-size: 0.9375rem; }

/* Reveal hook (used by shared.js) */
[data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 400ms ease, transform 400ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* Responsive */
@media (max-width: 980px) {
  .standards-layout { grid-template-columns: 1fr; }
  .standards-toc { position: static; }
  .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: var(--space-7) 0; }
  .hero { padding: var(--space-7) 0 var(--space-6); }
  .two-col { grid-template-columns: 1fr; gap: var(--space-5); }
  .checkbox-group { grid-template-columns: 1fr; }
  .site-footer__inner { flex-direction: column; align-items: flex-start; gap: var(--space-3); }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-4); }
  .steps { grid-template-columns: 1fr; }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__cta .btn { width: 100%; }
  .form-nav { flex-direction: column-reverse; align-items: stretch; }
  .form-nav .btn { width: 100%; }
  .form-nav .spacer { display: none; }
}