/* Algo Analytics — Ledger Steel theme */
:root {
  --ink: #142028;
  --ink-soft: #3a4a54;
  --mist: #e6edf2;
  --fog: #f2f6f8;
  --paper: #dce6ec;
  --teal: #0b3d4a;
  --teal-mid: #1a5c6b;
  --teal-bright: #2a7a8c;
  --signal: #e07a3d;
  --signal-deep: #c45f24;
  --line: rgba(20, 32, 40, 0.12);
  --shadow: 0 18px 50px rgba(11, 61, 74, 0.12);
  --radius: 4px;
  --font-display: "Syne", sans-serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --font-ui: "Manrope", system-ui, sans-serif;
  --max: 1120px;
  --header-h: 4.25rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(42, 122, 140, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(224, 122, 61, 0.12), transparent 50%),
    linear-gradient(165deg, #eef3f6 0%, #dfe8ee 45%, #e8eef2 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(11, 61, 74, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 61, 74, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 70%);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--teal-mid);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--signal-deep);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.55rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.45rem); }

p { margin: 0 0 1rem; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 1000;
  background: var(--teal);
  color: #fff;
  padding: 0.6rem 1rem;
  font-family: var(--font-ui);
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(242, 246, 248, 0.86);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 5px;
  background:
    radial-gradient(circle at 78% 22%, var(--signal) 0 22%, transparent 23%),
    linear-gradient(145deg, var(--teal) 0%, var(--teal-bright) 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.15);
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.15rem 1.15rem;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-weight: 560;
}

.nav-list a {
  color: var(--ink-soft);
  text-decoration: none;
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--teal);
}

.nav-cta {
  background: var(--teal);
  color: #fff !important;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius);
}

.nav-cta:hover {
  background: var(--teal-mid);
  color: #fff !important;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius);
  cursor: pointer;
  position: relative;
}

.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  display: block;
  width: 1.1rem;
  height: 2px;
  background: var(--ink);
  margin: 0 auto;
  position: relative;
}

.nav-toggle-bar::before { position: absolute; top: -5px; }
.nav-toggle-bar::after { position: absolute; top: 5px; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: rgba(242, 246, 248, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 0.75rem 1.25rem 1.25rem;
    display: none;
  }
  .site-nav.is-open { display: block; }
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }
}

/* Layout */
.site-main {
  position: relative;
  z-index: 1;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 4.5rem 0;
}

.section-tight {
  padding: 3rem 0;
}

.eyebrow {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-mid);
  margin: 0 0 0.75rem;
}

.lede {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 38rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--font-ui);
  font-weight: 650;
  font-size: 0.95rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

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

.btn-primary {
  background: var(--signal);
  color: #fff;
}

.btn-primary:hover {
  background: var(--signal-deep);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--teal);
  border-color: rgba(11, 61, 74, 0.35);
}

.btn-secondary:hover {
  background: rgba(11, 61, 74, 0.06);
  color: var(--teal);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Home hero — brand-led, asymmetric */
.hero-home {
  padding: 3.5rem 0 4rem;
  overflow: hidden;
}

.hero-home-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: end;
}

.hero-brand-block {
  position: relative;
}

.hero-brand-name {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 9vw, 6.5rem);
  line-height: 0.9;
  letter-spacing: -0.045em;
  color: var(--teal);
  margin: 0 0 1.25rem;
  animation: rise-in 0.8s ease both;
}

.hero-statement {
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  max-width: 28rem;
  color: var(--ink);
  margin: 0;
  animation: rise-in 0.8s ease 0.12s both;
}

.hero-meta {
  margin-top: 1.75rem;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  animation: rise-in 0.8s ease 0.22s both;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-meta span::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--signal);
}

.hero-visual {
  position: relative;
  min-height: 320px;
  animation: fade-scale 1s ease 0.15s both;
}

.hero-visual img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: 2px;
  filter: saturate(0.9) contrast(1.05);
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: auto -8% -8% auto;
  width: 55%;
  height: 45%;
  background: linear-gradient(135deg, var(--teal) 0%, transparent 70%);
  opacity: 0.35;
  pointer-events: none;
  z-index: -1;
}

@keyframes rise-in {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-scale {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}

@media (max-width: 860px) {
  .hero-home-grid {
    grid-template-columns: 1fr;
  }
  .hero-visual img {
    height: 260px;
  }
}

/* Proof strip early on home */
.proof-strip {
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.45);
  padding: 1.75rem 0;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  text-align: left;
}

.proof-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.85rem;
  color: var(--teal);
  letter-spacing: -0.03em;
}

.proof-item span {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--ink-soft);
}

@media (max-width: 700px) {
  .proof-grid { grid-template-columns: 1fr; }
}

/* Quote / testimonials */
.quote-panel {
  background: var(--teal);
  color: #e8f0f2;
  padding: 3.5rem 0;
}

.quote-panel .wrap {
  max-width: 760px;
}

.quote-panel blockquote {
  margin: 0;
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  line-height: 1.45;
  font-style: italic;
}

.quote-panel cite {
  display: block;
  margin-top: 1.25rem;
  font-family: var(--font-ui);
  font-style: normal;
  font-size: 0.9rem;
  opacity: 0.85;
}

/* Course preview */
.course-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.course-tile {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease;
}

.course-tile:hover {
  transform: translateY(-4px);
  color: inherit;
}

.course-tile img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  margin-bottom: 1rem;
}

.course-tile h3 {
  margin-bottom: 0.35rem;
}

.course-tile p {
  color: var(--ink-soft);
  font-size: 0.98rem;
  margin: 0;
}

@media (max-width: 860px) {
  .course-rail { grid-template-columns: 1fr; }
}

/* Benefits — not cards */
.benefit-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.benefit-row {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.benefit-index {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--signal);
}

@media (max-width: 600px) {
  .benefit-row { grid-template-columns: 3.5rem 1fr; }
}

/* Page heroes (interior) */
.page-hero {
  padding: 3.25rem 0 2rem;
}

.page-hero h1 {
  max-width: 18ch;
}

.page-hero .lede {
  margin-top: 0.5rem;
}

.page-hero-media {
  margin-top: 2rem;
}

.page-hero-media img {
  width: 100%;
  max-height: 380px;
  object-fit: cover;
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.pricing-tier {
  padding: 2rem 0;
  border-top: 3px solid var(--teal);
}

.pricing-tier.featured {
  border-top-color: var(--signal);
}

.pricing-tier .price {
  font-family: var(--font-display);
  font-size: 2.4rem;
  margin: 0.5rem 0 1rem;
  letter-spacing: -0.03em;
}

.pricing-tier .price span {
  font-size: 1rem;
  font-family: var(--font-ui);
  color: var(--ink-soft);
}

.pricing-tier ul {
  padding-left: 1.1rem;
  margin: 0 0 1.5rem;
  color: var(--ink-soft);
}

@media (max-width: 700px) {
  .pricing-grid { grid-template-columns: 1fr; }
}

/* Reviews */
.review-stack {
  display: grid;
  gap: 2rem;
}

.review-item {
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

.review-item .stars {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--signal-deep);
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.review-item .attr {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-top: 0.75rem;
}

.case-study {
  margin-top: 3rem;
  padding: 2rem 0;
  border-top: 3px solid var(--teal);
}

/* Blog */
.blog-list {
  display: grid;
  gap: 2.5rem;
}

.blog-entry {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.5rem;
  align-items: start;
  text-decoration: none;
  color: inherit;
}

.blog-entry:hover {
  color: inherit;
}

.blog-entry img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

.blog-entry h2 {
  font-size: 1.45rem;
  margin-bottom: 0.4rem;
}

.blog-meta {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-bottom: 0.5rem;
}

@media (max-width: 700px) {
  .blog-entry { grid-template-columns: 1fr; }
}

.article-body {
  max-width: 680px;
}

.article-body h2 {
  margin-top: 2rem;
}

.article-cover {
  margin: 1.5rem 0 2rem;
}

.article-cover img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
}

/* Forms */
.form {
  max-width: 560px;
  font-family: var(--font-ui);
}

.form-field {
  margin-bottom: 1.15rem;
}

.form-field label {
  display: block;
  font-weight: 650;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

.form-field .hint {
  font-size: 0.8rem;
  color: var(--ink-soft);
  font-weight: 400;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid rgba(11, 61, 74, 0.28);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.7);
  font: inherit;
  color: var(--ink);
}

.form-field textarea {
  min-height: 140px;
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 2px solid var(--teal-bright);
  outline-offset: 1px;
}

.field-error {
  color: #9b2c2c;
  font-size: 0.82rem;
  margin-top: 0.35rem;
  display: none;
}

.form-field.has-error .field-error {
  display: block;
}

.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea {
  border-color: #9b2c2c;
}

.form-status {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  font-size: 0.92rem;
  display: none;
}

.form-status.is-success {
  display: block;
  background: rgba(42, 122, 140, 0.12);
  border-left: 3px solid var(--teal-mid);
}

.form-status.is-error {
  display: block;
  background: rgba(155, 44, 44, 0.1);
  border-left: 3px solid #9b2c2c;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: start;
}

.contact-details address {
  font-style: normal;
  margin-bottom: 1rem;
}

@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* Modules / FAQ */
.module-list,
.faq-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.module-list li,
.faq-list li {
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  font-family: var(--font-display);
  font-weight: 650;
  cursor: pointer;
}

.faq-list details p {
  margin-top: 0.75rem;
  color: var(--ink-soft);
}

/* Legal */
.legal-body {
  max-width: 720px;
}

.legal-body h2 {
  margin-top: 2.25rem;
  font-size: 1.35rem;
}

.cookie-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  margin: 1.5rem 0;
}

.cookie-table th,
.cookie-table td {
  border: 1px solid var(--line);
  padding: 0.65rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.cookie-table th {
  background: rgba(11, 61, 74, 0.08);
}

/* 404 */
.page-404 {
  min-height: 55vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 4rem 1.25rem;
}

.page-404 .code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  color: var(--teal);
  line-height: 1;
  margin: 0;
}

/* Instructor */
.instructor {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1.5rem;
  align-items: start;
  margin: 2rem 0;
}

.instructor img {
  width: 140px;
  height: 140px;
  object-fit: cover;
  border-radius: 2px;
}

@media (max-width: 500px) {
  .instructor { grid-template-columns: 1fr; }
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: 3rem;
  background: var(--teal);
  color: #d6e4e8;
  padding: 3.5rem 0 0;
}

.footer-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem 2.5rem;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 2rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: #fff;
  margin: 0 0 0.75rem;
}

.footer-tag {
  font-size: 0.92rem;
  opacity: 0.85;
  margin: 0;
}

.footer-heading {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
  margin: 0 0 0.85rem;
}

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

.footer-links a,
.site-footer a {
  color: #e8f0f2;
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 0.92rem;
}

.site-footer a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer-links li {
  margin-bottom: 0.45rem;
}

.footer-address {
  font-style: normal;
  font-size: 0.88rem;
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.footer-base {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 1rem 1.25rem;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  opacity: 0.75;
}

.footer-base p { margin: 0; }

@media (max-width: 860px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(20, 32, 40, 0.96);
  color: #e8f0f2;
  padding: 1.15rem 1.25rem;
  transform: translateY(110%);
  transition: transform 0.35s ease;
  font-family: var(--font-ui);
}

.cookie-banner.is-visible {
  transform: translateY(0);
}

.cookie-banner-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.cookie-banner p {
  margin: 0;
  flex: 1 1 280px;
  font-size: 0.9rem;
  line-height: 1.45;
}

.cookie-banner a {
  color: #9fd4e0;
}

.cookie-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.cookie-actions button {
  font-family: var(--font-ui);
  font-weight: 650;
  font-size: 0.88rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  border: 1px solid transparent;
}

.cookie-accept {
  background: var(--signal);
  color: #fff;
}

.cookie-reject {
  background: transparent;
  color: #e8f0f2;
  border-color: rgba(255, 255, 255, 0.35);
}

.inline-error {
  background: rgba(155, 44, 44, 0.1);
  border-left: 3px solid #9b2c2c;
  padding: 0.75rem 1rem;
  margin: 1rem 0;
  font-family: var(--font-ui);
  font-size: 0.9rem;
}

/* Split feature section */
.split-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.split-feature img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

@media (max-width: 800px) {
  .split-feature { grid-template-columns: 1fr; }
  .split-feature img { height: 220px; }
}

/* CTA band */
.cta-band {
  padding: 3.5rem 0;
  background:
    linear-gradient(120deg, rgba(11, 61, 74, 0.92), rgba(26, 92, 107, 0.88)),
    url("https://images.unsplash.com/photo-1554224155-6726b3ff858f?auto=format&fit=crop&w=1400&q=80") center/cover;
  color: #e8f0f2;
}

.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(232, 240, 242, 0.88); max-width: 36rem; }

/* Outcomes list */
.outcome-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 2rem;
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}

.outcome-grid li {
  padding-left: 1.1rem;
  border-left: 2px solid var(--signal);
  color: var(--ink-soft);
}

@media (max-width: 600px) {
  .outcome-grid { grid-template-columns: 1fr; }
}