/* =========================================================
   Yassine Brahni — Portfolio styles (shared)
   Claude-inspired editorial aesthetic.
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --bg: #F5F1EB;
  --surface: #FAF7F2;
  --ink: #1A1915;
  --muted: #5C5A54;
  --accent: #D97757;
  --accent-deep: #AE5630;
  --accent-soft: #F2B79A;
  --border: #E8E1D4;
  --ring: rgba(217, 119, 87, 0.35);

  --serif: ui-serif, Georgia, "Times New Roman", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

html.dark {
  --bg: #1A1915;
  --surface: #262420;
  --ink: #F5F1EB;
  --muted: #A8A49A;
  --accent: #D97757;
  --accent-deep: #AE5630;
  --accent-soft: #E89A78;
  --border: #3A3732;
  --ring: rgba(217, 119, 87, 0.5);
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 400ms ease, color 400ms ease;
  position: relative;
  min-height: 100vh;
}

/* Paper grain overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.03;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.7 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
}
html.dark body::before { opacity: 0.05; mix-blend-mode: screen; }

.font-serif { font-family: var(--serif); }
.font-mono  { font-family: var(--mono); }

/* ---------- Focus states ---------- */
a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Scroll progress ---------- */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--accent);
  z-index: 100;
  transition: width 60ms linear;
}

/* ---------- Header ---------- */
.site-header {
  transition: border-color 300ms ease, background-color 300ms ease;
  border-bottom: 1px solid transparent;
  background-color: color-mix(in srgb, var(--bg) 70%, transparent);
  backdrop-filter: saturate(1.1) blur(10px);
  -webkit-backdrop-filter: saturate(1.1) blur(10px);
}
.site-header.scrolled { border-bottom-color: var(--border); }

/* ---------- Hero word reveal ---------- */
.word-reveal {
  display: inline-block;
  opacity: 0;
  transform: translateY(16px);
}
@media (prefers-reduced-motion: no-preference) {
  .word-reveal { animation: wordUp 700ms var(--ease-out) forwards; }
}
@media (prefers-reduced-motion: reduce) {
  .word-reveal { opacity: 1; transform: none; }
}
@keyframes wordUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Accent shimmer word ---------- */
.shimmer-word {
  color: var(--accent);
  background-image: linear-gradient(
    110deg,
    var(--accent) 0%,
    var(--accent) 40%,
    var(--accent-soft) 50%,
    var(--accent) 60%,
    var(--accent) 100%
  );
  background-size: 250% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
@media (prefers-reduced-motion: no-preference) {
  .shimmer-word { animation: shimmer 6s ease-in-out infinite; }
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -100% 0; }
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 800ms var(--ease-out), transform 800ms var(--ease-out);
  will-change: opacity, transform;
}
.reveal.in-view { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Hero blob & rings ---------- */
.blob {
  position: absolute;
  right: -8%;
  top: 50%;
  transform: translateY(-50%);
  width: 520px;
  height: 520px;
  pointer-events: none;
  opacity: 0.95;
}
.blob .ring { transform-origin: center; transform-box: fill-box; }
@media (prefers-reduced-motion: no-preference) {
  .blob { animation: drift 8s ease-in-out infinite alternate; }
  .blob .ring   { animation: spin 30s linear infinite; }
  .blob .ring-2 { animation: spin 45s linear infinite reverse; }
  .blob .ring-3 { animation: spin 60s linear infinite; }
}
@keyframes drift {
  0%   { transform: translateY(-52%); }
  100% { transform: translateY(-48%); }
}
@keyframes spin {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ---------- Floating particles ---------- */
.particles { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.particle {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.45;
}
.particle.p-a { top: 12%; left: 8%;  animation: floatA 9s ease-in-out infinite; }
.particle.p-b { top: 72%; left: 18%; animation: floatB 11s ease-in-out infinite; width: 4px; height: 4px; opacity: 0.3; }
.particle.p-c { top: 34%; left: 62%; animation: floatA 13s ease-in-out infinite reverse; width: 8px; height: 8px; opacity: 0.2; }
.particle.p-d { top: 56%; left: 86%; animation: floatB 10s ease-in-out infinite; width: 5px; height: 5px; opacity: 0.4; }
.particle.p-e { top: 22%; left: 46%; animation: floatA 14s ease-in-out infinite; width: 3px; height: 3px; opacity: 0.35; }
@keyframes floatA {
  0%, 100% { transform: translate(0, 0); }
  50%      { transform: translate(14px, -18px); }
}
@keyframes floatB {
  0%, 100% { transform: translate(0, 0); }
  50%      { transform: translate(-12px, 16px); }
}
@media (prefers-reduced-motion: reduce) {
  .particle { animation: none !important; }
}

/* ---------- Dotted grid background (hero) ---------- */
.dot-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: radial-gradient(ellipse at center, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 0%, transparent 72%);
  opacity: 0.6;
}

/* ---------- Squiggle under headline ---------- */
.squiggle { overflow: visible; }
.squiggle path {
  stroke-dasharray: 400;
  stroke-dashoffset: 400;
}
@media (prefers-reduced-motion: no-preference) {
  .squiggle.drawn path {
    animation: drawLine 1600ms var(--ease-out) 600ms forwards;
  }
}
@media (prefers-reduced-motion: reduce) {
  .squiggle path { stroke-dashoffset: 0; }
}
@keyframes drawLine {
  to { stroke-dashoffset: 0; }
}

/* ---------- Section wave divider ---------- */
.wave-divider {
  display: block;
  width: 100%;
  height: 36px;
  color: var(--border);
}
.wave-divider path {
  stroke: currentColor;
  fill: none;
  stroke-width: 1;
  stroke-dasharray: 4 8;
}
@media (prefers-reduced-motion: no-preference) {
  .wave-divider path { animation: waveDash 12s linear infinite; }
}
@keyframes waveDash {
  to { stroke-dashoffset: -48; }
}

/* ---------- Role ticker ---------- */
.ticker-item {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 500ms ease, transform 500ms ease;
  position: absolute;
  left: 0;
}
.ticker-item.active { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .ticker-item { transition: none; } }

/* ---------- Skill pill ---------- */
.skill-pill {
  border: 1px solid var(--border);
  color: var(--ink);
  background: transparent;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
  transition: border-color 280ms ease, transform 280ms ease, box-shadow 280ms ease, background-color 280ms ease;
  display: inline-block;
}
.skill-pill:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(217, 119, 87, 0.15);
}

/* ---------- Service row ---------- */
.service-row {
  position: relative;
  transition: padding-left 400ms var(--ease-out);
  overflow: hidden;
}
.service-row .service-bar {
  position: absolute; left: 0; bottom: 0;
  width: 3px; height: 100%;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 450ms var(--ease-out);
}
.service-row .service-inner { transition: transform 400ms var(--ease-out); }
.service-row .service-num { transition: color 400ms ease; }
.service-row:hover .service-bar   { transform: scaleY(1); }
.service-row:hover .service-inner { transform: translateX(8px); }
.service-row:hover .service-num   { color: var(--accent); }

/* ---------- Reference card ---------- */
.ref-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  background-color: var(--surface);
  transition: border-color 300ms ease, transform 400ms var(--ease-out), box-shadow 400ms ease;
  position: relative;
  overflow: hidden;
}
.ref-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(600px circle at var(--mx, 50%) var(--my, 50%), rgba(217,119,87,0.08), transparent 40%);
  opacity: 0;
  transition: opacity 400ms ease;
  pointer-events: none;
}
.ref-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 1px 2px rgba(26,25,21,0.04), 0 18px 40px rgba(26,25,21,0.08);
}
.ref-card:hover::after { opacity: 1; }
.ref-card .ref-thumb {
  aspect-ratio: 16/10;
  border-radius: 10px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--accent-soft) 0%, var(--accent) 100%);
  position: relative;
}
.ref-card .ref-thumb svg { display: block; width: 100%; height: 100%; }
.ref-card .ref-arrow { transition: transform 400ms var(--ease-out); }
.ref-card:hover .ref-arrow { transform: translate(6px, -6px); }

/* ---------- Contact link ---------- */
.contact-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 6px;
}
.contact-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 450ms var(--ease-out);
}
.contact-link:hover::after { transform: scaleX(1); }
.contact-link .arrow {
  display: inline-block;
  transition: transform 400ms var(--ease-out), opacity 400ms ease;
}
.contact-link:hover .arrow { transform: translateX(6px); }

/* ---------- Buttons ---------- */
.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 14px 26px;
  border-radius: 12px;
  font-weight: 500;
  transition: background-color 300ms ease, transform 120ms ease-out, box-shadow 300ms ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  will-change: transform;
  box-shadow: 0 1px 2px rgba(26,25,21,0.08);
}
.btn-primary:hover { background: var(--accent-deep); box-shadow: 0 8px 24px rgba(174, 86, 48, 0.28); }
.btn-secondary {
  border: 1px solid var(--ink);
  color: var(--ink);
  padding: 14px 26px;
  border-radius: 12px;
  font-weight: 500;
  transition: all 300ms ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-secondary:hover { background: var(--ink); color: var(--bg); }

/* ---------- Theme toggle icon ---------- */
.theme-icon {
  transition: transform 500ms var(--ease-out), opacity 400ms ease;
}
.theme-icon.hidden-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.6);
  pointer-events: none;
  position: absolute;
}

/* ---------- Mobile menu overlay ---------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity 400ms ease;
}
.mobile-menu.open { opacity: 1; pointer-events: auto; }
.mobile-menu a {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 500ms ease, transform 500ms var(--ease-out);
}
.mobile-menu.open a { opacity: 1; transform: translateY(0); }
.mobile-menu.open a:nth-child(1) { transition-delay: 100ms; }
.mobile-menu.open a:nth-child(2) { transition-delay: 180ms; }
.mobile-menu.open a:nth-child(3) { transition-delay: 260ms; }
.mobile-menu.open a:nth-child(4) { transition-delay: 340ms; }
.mobile-menu.open a:nth-child(5) { transition-delay: 420ms; }
.mobile-menu.open a:nth-child(6) { transition-delay: 500ms; }

/* ---------- Certification draw-in check ---------- */
.cert-check path {
  stroke-dasharray: 30;
  stroke-dashoffset: 30;
}
.cert-check.drawn path {
  animation: drawCheck 700ms var(--ease-out) forwards;
}
@keyframes drawCheck {
  to { stroke-dashoffset: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .cert-check path { stroke-dashoffset: 0; }
}

/* ---------- Marquee logos ---------- */
.marquee {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee__track {
  display: flex;
  gap: 3rem;
  width: max-content;
  animation: marquee 36s linear infinite;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .marquee__track { animation: none; }
}

/* ---------- FAQ accordion ---------- */
.faq-item { border-top: 1px solid var(--border); }
.faq-item:last-child { border-bottom: 1px solid var(--border); }
.faq-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0;
  text-align: left;
  font-family: var(--serif);
  font-size: 1.25rem;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
}
.faq-toggle .chev {
  transition: transform 400ms var(--ease-out);
  flex: none;
}
.faq-item[data-open="true"] .chev { transform: rotate(45deg); color: var(--accent); }
.faq-body {
  overflow: hidden;
  max-height: 0;
  transition: max-height 500ms var(--ease-out), padding 400ms ease;
  color: var(--muted);
  line-height: 1.7;
}
.faq-item[data-open="true"] .faq-body {
  padding-bottom: 1.5rem;
}

/* ---------- Morphing blob (secondary) ---------- */
.morph-blob { filter: blur(0.4px); }
@media (prefers-reduced-motion: no-preference) {
  .morph-blob path { animation: morph 14s ease-in-out infinite; }
}
@keyframes morph {
  0%, 100% { d: path("M45,-60C58,-50,68,-35,70,-19C72,-3,66,14,56,28C45,42,30,54,13,60C-3,66,-21,66,-36,58C-51,49,-63,33,-66,16C-69,-2,-62,-21,-51,-35C-40,-49,-25,-58,-8,-63C9,-68,27,-70,45,-60Z"); }
  50%      { d: path("M52,-56C64,-44,68,-22,67,-1C66,21,59,43,44,56C30,68,8,71,-13,66C-34,62,-55,49,-62,31C-70,13,-64,-10,-55,-30C-46,-51,-34,-69,-17,-70C0,-71,22,-54,52,-56Z"); }
}

/* ---------- Section divider ---------- */
.hairline { border-top: 1px solid var(--border); }

/* ---------- Theme color transition targets ---------- */
main, header, footer, section, .skill-pill, .btn-secondary, .ref-card, .faq-item {
  transition: background-color 400ms ease, color 400ms ease, border-color 400ms ease;
}

/* ---------- Case study specific ---------- */
.case-hero {
  padding-top: 10rem;
  padding-bottom: 4rem;
}
.case-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
}
.case-meta > div { padding-top: 1rem; border-top: 1px solid var(--border); }
.case-meta .label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

/* ---------- Noise / grain intensify inside hero ---------- */
.hero-noise {
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: 0.04;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='1.2' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* ---------- Contact form ---------- */
.form-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.4rem;
}
.form-input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.95rem;
  line-height: 1.4;
  transition: border-color 200ms ease, box-shadow 200ms ease, background-color 200ms ease;
}
.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--ring);
}
.form-input::placeholder { color: var(--muted); opacity: 0.7; }
.form-input[aria-invalid="true"] { border-color: #C44E4E; }
textarea.form-input { resize: vertical; min-height: 100px; }
select.form-input {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'><path d='M1 1.5L6 6.5L11 1.5' stroke='%235C5A54' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.form-status { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.06em; }
.form-status-success { color: #2F7D5C; }
.form-status-error   { color: #C44E4E; }

/* Honeypot — kept off-screen */
input[name="botcheck"] {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}