/* ---------------------------------------------------------
   Talha — Data Analyst retail multi-sites
   Tokens
--------------------------------------------------------- */
:root {
  --bg: #faf9f6;
  --bg-alt: #f1eee7;
  --ink: #10192b;
  --ink-soft: #4b5567;
  --accent: #1b4965;
  --accent-dark: #102e42;
  --accent-soft: #e7eef2;
  --line: #d8d3c7;
  --white: #ffffff;

  --font-display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Public Sans", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  --wrap: 1120px;
  --wrap-narrow: 760px;
  --radius: 4px;
}

/* ---------------------------------------------------------
   Reset
--------------------------------------------------------- */
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}
ul,
ol,
dl {
  margin: 0;
  padding: 0;
}
p {
  margin: 0 0 1em;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--white);
  padding: 0.6em 1em;
  z-index: 200;
}
.skip-link:focus {
  left: 0;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}
.wrap-narrow {
  max-width: var(--wrap-narrow);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
}

h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  line-height: 1.12;
  font-weight: 700;
}
h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  line-height: 1.2;
}
h3 {
  font-size: 1.15rem;
  line-height: 1.35;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--accent-soft);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.9em;
}

.section-intro {
  max-width: 640px;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

/* ---------------------------------------------------------
   Buttons
--------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75em 1.4em;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  text-decoration: none;
  transition:
    transform 0.15s ease,
    background 0.15s ease,
    border-color 0.15s ease;
  white-space: nowrap;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-ghost:hover {
  background: var(--accent-soft);
}

.btn-small {
  padding: 0.5em 1.1em;
  font-size: 0.88rem;
}
.btn-large {
  padding: 0.95em 1.8em;
  font-size: 1.05rem;
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

/* ---------------------------------------------------------
   Header
--------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--line);
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 68px;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--ink);
}
.brand:hover {
  text-decoration: none;
  color: var(--accent);
}

.main-nav {
  display: flex;
  gap: 28px;
  font-size: 0.92rem;
  font-weight: 500;
}
.main-nav a {
  color: var(--ink-soft);
}
.main-nav a:hover {
  color: var(--accent);
  text-decoration: none;
}

/* ---------------------------------------------------------
   Hero
--------------------------------------------------------- */
.hero {
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 38px,
    rgba(27, 73, 101, 0.05) 39px
  );
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  padding: 88px 24px 56px;
}

.hero-sub {
  max-width: 620px;
  font-size: 1.1rem;
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.proof-strip {
  border-top: 1px solid var(--line);
  background: var(--accent-dark);
}

.proof-strip-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 28px 40px;
  padding: 22px 24px;
}

.proof-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--bg);
}

.proof-figure {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.15rem;
  color: #9fc5d8;
}

.proof-label {
  font-size: 0.85rem;
  color: #c9d6de;
}

/* ---------------------------------------------------------
   Sections (generic)
--------------------------------------------------------- */
.section {
  padding: 88px 0;
}
.section-alt {
  background: var(--bg-alt);
}

/* ---------------------------------------------------------
   Case studies
--------------------------------------------------------- */
.case {
  border-top: 1px solid var(--line);
  padding: 64px 0;
}
.case:first-of-type {
  border-top: none;
  padding-top: 48px;
}

.case-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

@media (min-width: 860px) {
  .case-grid {
    grid-template-columns: 380px minmax(0, 1fr);
    align-items: start;
  }
}

.case-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  position: sticky;
  top: 92px;
}

.case-figure img {
  width: 100%;
  display: block;
}

.img-zoom {
  display: block;
  width: 100%;
  padding: 0;
  border: none;
  background: none;
  cursor: zoom-in;
  position: relative;
}
.img-zoom::after {
  content: "Agrandir";
  position: absolute;
  right: 10px;
  bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--white);
  background: rgba(16, 25, 43, 0.72);
  padding: 0.3em 0.6em;
  border-radius: 3px;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.img-zoom:hover::after,
.img-zoom:focus-visible::after {
  opacity: 1;
}
.img-zoom:hover img,
.img-zoom:focus-visible img {
  filter: brightness(0.94);
}

.case-figure figcaption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.zoom-hint {
  color: var(--accent);
}

/* ---------------------------------------------------------
   Lightbox
--------------------------------------------------------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}
.lightbox[hidden] {
  display: none;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(16, 25, 43, 0.86);
}

.lightbox-content {
  position: relative;
  margin: 0;
  max-width: min(92vw, 1200px);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  z-index: 1;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 78vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.lightbox-content figcaption {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--bg);
  text-align: center;
  padding-top: 14px;
}

.lightbox-close {
  position: absolute;
  top: -44px;
  right: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--bg);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius);
  padding: 0.5em 0.9em;
  cursor: pointer;
}
.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.18);
}

.case-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.5em;
}

.case-body h3 {
  margin-bottom: 1.1em;
}

.case-fields {
  margin-bottom: 1.4em;
}
.case-field {
  margin-bottom: 1.4em;
}
.case-field:last-child {
  margin-bottom: 0;
}

.case-field dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.5em;
}

.case-field dd {
  margin: 0;
  color: var(--ink);
}

.case-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.9em;
}
.case-list li {
  padding-left: 1.1em;
  position: relative;
}
.case-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 1px;
}

.result-block {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin: 1.6em 0;
}

.result-figure {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.8rem;
  color: var(--accent);
  flex: 0 0 auto;
  line-height: 1.1;
}

.result-text {
  margin: 0;
  color: var(--ink);
}
.result-text strong {
  color: var(--accent-dark);
}

.case-meta {
  font-size: 0.85rem;
  color: var(--ink-soft);
  font-style: italic;
  border-top: 1px solid var(--line);
  padding-top: 1em;
  margin-top: 1.4em;
  margin-bottom: 0;
}

/* ---------------------------------------------------------
   About
--------------------------------------------------------- */
.about-grid {
  display: grid;
  gap: 40px;
  margin-top: 32px;
}

@media (min-width: 720px) {
  .about-grid {
    grid-template-columns: 1.3fr 1fr;
  }
}

.about-text p {
  color: var(--ink);
}

.timeline {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 22px;
  border-left: 2px solid var(--line);
  padding-left: 20px;
}

.timeline li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline-mark {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--accent);
}

.timeline-label {
  font-size: 0.95rem;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------
   Method
--------------------------------------------------------- */
.method-list {
  list-style: none;
  margin-top: 36px;
  display: flex;
  flex-direction: column;
}

.method-list li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 20px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.method-list li:first-child {
  border-top: none;
}

.method-index {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1rem;
  color: var(--accent);
  padding-top: 0.2em;
}

.method-list h3 {
  margin-bottom: 0.4em;
}
.method-list p {
  color: var(--ink-soft);
  margin: 0;
}

/* ---------------------------------------------------------
   Contact
--------------------------------------------------------- */
.section-contact {
  text-align: left;
}

.contact-card {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.copy-email {
  font-family: var(--font-mono);
}
.copy-email[data-copied="true"] {
  color: var(--accent-dark);
  border-color: var(--accent-dark);
  background: var(--accent-soft);
}

/* ---------------------------------------------------------
   Footer
--------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-alt);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  padding: 28px 24px;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.footer-inner a {
  color: var(--ink-soft);
}
.footer-inner a:hover {
  color: var(--accent);
}

/* ---------------------------------------------------------
   Scroll reveal
--------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------------------------------------------------------
   Small screens
--------------------------------------------------------- */
@media (max-width: 640px) {
  .main-nav {
    display: none;
  }
  .hero-inner {
    padding: 56px 20px 40px;
  }
  .section {
    padding: 64px 0;
  }
  .case {
    padding: 48px 0;
  }
  .result-block {
    flex-direction: column;
    gap: 10px;
  }
  .case-figure {
    position: static;
  }
}