/* ===========================
   Karim AI Solutions
   "Technical ledger" aesthetic
   =========================== */

:root {
  --ink:        #12172B;
  --ink-90:     rgba(18, 23, 43, 0.92);
  --ink-70:     rgba(18, 23, 43, 0.72);
  --ink-50:     rgba(18, 23, 43, 0.50);
  --ink-30:     rgba(18, 23, 43, 0.28);
  --ink-15:     rgba(18, 23, 43, 0.14);
  --ink-08:     rgba(18, 23, 43, 0.08);

  --paper:      #FAF9F6;
  --paper-2:    #F3F1EA;
  --amber:      #D9A441;
  --amber-soft: #E8C783;
  --slate:      #5C6470;

  --serif: "Fraunces", "Iowan Old Style", "Palatino", "Georgia", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono:  "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap-max: 1120px;
  --gutter:   24px;

  --hair: 1px solid var(--ink-15);
}

/* Reset & base */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0; padding: 0; }
img { max-width: 100%; display: block; }

/* The [hidden] attribute must beat any layout display rule
   (.contact-form uses display:grid, which would otherwise leak through). */
[hidden] { display: none !important; }

.wrap {
  max-width: var(--wrap-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
}

hr.rule {
  border: 0;
  border-top: var(--hair);
  margin: 0;
}

/* ===========================
   HEADER
   =========================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(250, 249, 246, 0.86);
  backdrop-filter: saturate(1.1) blur(8px);
  -webkit-backdrop-filter: saturate(1.1) blur(8px);
  border-bottom: var(--hair);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0;
}

.brand-name {
  font-size: 17px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav a {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-70);
  letter-spacing: 0.02em;
  transition: color 0.15s ease;
}

.nav a:hover { color: var(--ink); }

.nav-cta {
  padding: 8px 14px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  color: var(--ink) !important;
}

.nav-cta:hover {
  background: var(--ink);
  color: var(--paper) !important;
}

/* ===========================
   SECTIONS
   =========================== */

.section {
  padding: 96px 0;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-70);
  text-transform: none;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}

.section-label .dot {
  width: 8px; height: 8px;
  background: var(--amber);
  border-radius: 999px;
  display: inline-block;
}

.section-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 24px;
  max-width: 22ch;
}

.section-lede {
  color: var(--ink-70);
  max-width: 60ch;
  margin: 0 0 40px;
}

/* ===========================
   HERO
   =========================== */
.hero {
  padding: 88px 0 96px;
  position: relative;
}

.hero-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(38px, 6.2vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 12px 0 24px;
  max-width: 18ch;
}

.hero-title .amber {
  color: var(--ink);
  background:
    linear-gradient(0deg, var(--amber-soft) 0 40%, transparent 40% 100%);
  padding: 0 0.1em;
  border-radius: 2px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.hero-sub {
  font-size: 19px;
  color: var(--ink-70);
  max-width: 62ch;
  margin: 0 0 40px;
  line-height: 1.55;
}

/* Query strip -- the signature element */
.query-strip {
  border: var(--hair);
  border-radius: 6px;
  background: var(--paper);
  box-shadow: 0 1px 0 rgba(18,23,43,0.04);
  overflow: hidden;
  max-width: 780px;
  margin-bottom: 40px;
}

.qs-row {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: baseline;
  padding: 14px 18px;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.5;
}

.qs-row + .qs-row {
  border-top: var(--hair);
}

.qs-tag {
  font-weight: 600;
  color: var(--ink-50);
  letter-spacing: 0.02em;
}

.qs-q .qs-tag { color: var(--ink); }
.qs-a .qs-tag { color: var(--amber); }

.qs-text {
  color: var(--ink);
  transition: opacity 0.25s ease;
}

.qs-text.fading { opacity: 0; }

.qs-meta {
  border-top: var(--hair);
  padding: 8px 18px;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-50);
  background: var(--paper-2);
}

/* CTAs */
.hero-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border-radius: 4px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.005em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.btn-primary:hover { background: #1c2340; border-color: #1c2340; }
.btn-primary:active { transform: translateY(1px); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink-30);
}

.btn-ghost:hover { border-color: var(--ink); }

/* ===========================
   SERVICES
   =========================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: var(--hair);
  border-left: var(--hair);
}

.service {
  padding: 32px 28px 36px;
  border-right: var(--hair);
  border-bottom: var(--hair);
  background: var(--paper);
}

.service-num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--amber);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.service h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
}

.service p {
  color: var(--ink-70);
  font-size: 15.5px;
  margin: 0 0 18px;
}

.service-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px dashed var(--ink-15);
  padding-top: 14px;
}

.service-list li {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-70);
  padding: 6px 0 6px 16px;
  position: relative;
  line-height: 1.5;
}

.service-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--amber);
}

/* ===========================
   CASE STUDIES
   =========================== */
.cases {
  border-top: var(--hair);
}

.case {
  border-bottom: var(--hair);
  padding: 32px 0;
}

.case-tag {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-70);
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}

.case-tag span:first-child {
  color: var(--ink);
  font-weight: 600;
}

.case-body {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
}

.case-col {
  min-width: 0;
}

.case-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-50);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  border-top: 1px solid var(--ink);
  padding-top: 12px;
  display: inline-block;
  min-width: 100%;
}

.case-col p {
  font-size: 15.5px;
  color: var(--ink);
  line-height: 1.55;
  margin: 0;
}

.case-result-text {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 17px !important;
  letter-spacing: -0.005em;
}

.case-stack {
  margin-top: 24px;
  padding-top: 14px;
  border-top: 1px dashed var(--ink-15);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-50);
  line-height: 1.5;
}

.case-stack-label {
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ===========================
   DEMOS
   =========================== */
.demos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 8px;
}

.demo-card {
  display: block;
  border: var(--hair);
  border-radius: 6px;
  padding: 32px 28px;
  background: var(--paper);
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  position: relative;
  overflow: hidden;
}

.demo-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      135deg,
      rgba(217, 164, 65, 0.05) 0 2px,
      transparent 2px 12px
    );
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.demo-card:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.demo-card:hover::before {
  opacity: 1;
}

.demo-tag {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--amber);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.demo-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 26px;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.demo-card p {
  color: var(--ink-70);
  font-size: 15.5px;
  margin: 0 0 24px;
}

.demo-cta {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
}

.demo-cta .arrow {
  transition: transform 0.15s ease;
}

.demo-card:hover .demo-cta .arrow {
  transform: translateX(4px);
}

/* ===========================
   PROCESS
   =========================== */
.process {
  list-style: none;
  border-top: var(--hair);
  padding: 0;
  margin: 0;
}

.process li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 32px;
  padding: 28px 0;
  border-bottom: var(--hair);
  align-items: baseline;
}

.p-num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--amber);
  letter-spacing: 0.04em;
}

.p-body h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

.p-body p {
  color: var(--ink-70);
  font-size: 15.5px;
  margin: 0;
  max-width: 62ch;
}

/* ===========================
   ABOUT
   =========================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-copy p {
  color: var(--ink);
  font-size: 17px;
  max-width: 58ch;
}

.about-copy p + p {
  margin-top: 1rem;
}

.about-meta {
  margin-top: 28px !important;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-70);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.about-meta .sep { color: var(--ink-30); }

.photo-frame {
  aspect-ratio: 4 / 5;
  border: var(--hair);
  background: var(--paper-2);
  position: relative;
  overflow: hidden;
}

.photo-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.94) contrast(1.02);
}

.photo-placeholder {
  position: absolute;
  inset: 0;
  display: none; /* shown by JS onerror if the image is missing */
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--mono);
  color: var(--ink-30);
  text-align: center;
}

.ph-line { font-size: 14px; }
.ph-line-small { font-size: 11px; color: var(--ink-30); }

.photo-caption {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-50);
  margin-top: 12px;
  text-align: center;
}

/* ===========================
   CONTACT
   =========================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
  margin-top: 12px;
  border-top: var(--hair);
  padding-top: 40px;
  position: relative;
}

.contact-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-50);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.contact-email {
  display: inline-block;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(24px, 2.6vw, 30px);
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 6px;
  line-height: 1.2;
  word-break: break-word;
}

.contact-note {
  color: var(--ink-70);
  font-size: 15px;
  margin-top: 20px;
  max-width: 40ch;
}

.contact-form {
  display: grid;
  gap: 18px;
}

.contact-form label {
  display: grid;
  gap: 6px;
}

.contact-form label > span {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-70);
  letter-spacing: 0.02em;
}

.contact-form input,
.contact-form textarea {
  font: inherit;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--ink-30);
  padding: 8px 0;
  outline: none;
  transition: border-color 0.15s ease;
  border-radius: 0;
  font-family: var(--sans);
  font-size: 15px;
  width: 100%;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--ink);
}

.contact-form textarea {
  resize: vertical;
  min-height: 100px;
}

.contact-form .btn {
  justify-self: start;
  margin-top: 6px;
}

.contact-form .btn:disabled {
  opacity: 0.55;
  cursor: wait;
}

.form-note {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-50);
  margin: 0;
}

.form-error {
  font-family: var(--mono);
  font-size: 12px;
  color: #a63a2a;
  margin: 0;
}

/* Honeypot — visually hidden but reachable to bots */
.hp-field {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  margin: 0;
}

/* Thanks state (shown after successful submit) */
.contact-thanks {
  grid-column: 2 / -1;
  border: var(--hair);
  border-radius: 6px;
  padding: 32px 28px;
  background: var(--paper);
  align-self: start;
}

.contact-thanks .thanks-mark {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: var(--amber);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 18px;
}

.contact-thanks h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 24px;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
}

.contact-thanks p {
  color: var(--ink-70);
  font-size: 15px;
  margin: 0;
  max-width: 44ch;
}

.contact-thanks a {
  border-bottom: 1px solid var(--ink);
}

/* ===========================
   FOOTER
   =========================== */
.site-footer {
  border-top: var(--hair);
  padding: 32px 0 48px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.foot-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-weight: 500;
}

.foot-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-70);
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.foot-meta .sep { color: var(--ink-30); }

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 900px) {
  .services-grid {
    grid-template-columns: 1fr;
    border-left: 0;
    border-top: var(--hair);
  }
  .service {
    border-right: 0;
  }

  .case-body {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .demos {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-photo {
    max-width: 320px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-thanks {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .section { padding: 72px 0; }

  .hero { padding: 56px 0 72px; }

  .nav { gap: 16px; }
  .nav a:not(.nav-cta) { display: none; }

  .process li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .qs-row {
    grid-template-columns: 32px 1fr;
    font-size: 13px;
    padding: 12px 14px;
  }

  .qs-meta { padding: 6px 14px; }
}