/* =========================================================
   Muddassir | Retention Strategist
   Updated 2026-05-11 to use the shared abdurrub.com / CSOS
   design system fonts (Changa One + PT Serif) and the true
   teal #008080 palette. Layout classes unchanged.
   ========================================================= */

@import url("https://fonts.googleapis.com/css2?family=Changa+One:ital@0;1&family=PT+Serif:ital,wght@0,400;0,700;1,400;1,700&family=Sacramento&display=swap");

:root {
  --teal-50:  #f0fdfa;
  --teal-100: #ccfbf1;
  --teal-200: #99f6e4;
  --teal-300: #5eead4;
  --teal-400: #00a8a3;
  --teal-500: #00a8a3;
  --teal-600: #008080;
  --teal-700: #008080;
  --teal-800: #006666;
  --teal-900: #004d4d;
  --teal-950: #004d4d;

  --ink-900: #0d0f0e;
  --ink-700: #2a2f2d;
  --ink-500: #5d6664;
  --ink-400: #6b7280;
  --ink-300: #9ca3af;
  --ink-200: #e5e7eb;
  --ink-100: #f3f4f6;
  --ink-50:  #fafafa;

  --paper:   #ffffff;
  --tint:    #f7fbfa;

  --radius-sm: 12px;
  --radius:    18px;
  --radius-lg: 28px;

  --shadow-soft: 0 1px 2px rgba(10,77,92,.04), 0 8px 32px -12px rgba(10,77,92,.10);
  --shadow-lift: 0 1px 2px rgba(10,77,92,.04), 0 24px 48px -16px rgba(10,77,92,.18);
}

/* ---------- Base ---------- */

html { scroll-behavior: smooth; }
body {
  font-family: "PT Serif", Georgia, "Times New Roman", serif !important;
  font-size: 18px !important;
  line-height: 1.65 !important;
  color: var(--ink-900);
}

h1, h2, h3, h4, h5 {
  font-family: "Changa One", "Impact", sans-serif !important;
  font-weight: 400 !important;
  letter-spacing: 0.005em !important;
  line-height: 1.1 !important;
}

.font-display   { font-family: "Changa One", "Impact", sans-serif !important; letter-spacing: 0.005em !important; font-weight: 400 !important; }
.font-sans      { font-family: "PT Serif", Georgia, serif !important; }
.font-signature { font-family: "Sacramento", cursive; letter-spacing: 0; }

/* ---------- Logo (photo + signature) ---------- */
.logo-photo {
  width: 36px; height: 36px;
  border-radius: 999px;
  overflow: hidden;
  border: 2px solid var(--teal-100);
  background: var(--teal-950);
  flex-shrink: 0;
}
.logo-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  transform: scale(1.45);
  transform-origin: center 15%;
}

.gradient-text {
  background: linear-gradient(135deg, var(--teal-950) 0%, var(--teal-500) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--teal-700);
}

/* ---------- Reveal animation ---------- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- Cards ---------- */

.card {
  background: var(--paper);
  border: 1px solid var(--ink-200);
  border-radius: var(--radius);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.card:hover {
  border-color: var(--teal-300);
  box-shadow: var(--shadow-soft);
}

/* ---------- About photo (in Who Am I section) ---------- */

.about-photo {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 24px;
  overflow: hidden;
  background: #0a4d5c;                  /* matches photo bg, hides any seam */
  box-shadow: 0 1px 2px rgba(10,77,92,.05), 0 30px 60px -30px rgba(10,77,92,.25);
}
.about-photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transform: scale(1.18);
  transform-origin: center top;
}

/* ---------- Trust strip (distinct, popping background) ---------- */

.trust-strip {
  position: relative;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(45,212,191,.18), transparent 70%),
    linear-gradient(180deg, #f0fdfa 0%, #e6fffa 100%);
  border-top: 1px solid var(--teal-100);
  border-bottom: 1px solid var(--teal-100);
}
.trust-strip::before {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(15,118,110,.07) 1px, transparent 1.2px);
  background-size: 22px 22px;
  pointer-events: none;
  opacity: .8;
}
.trust-strip > * { position: relative; }

/* ---------- Nav dropdown ---------- */

.menu-trigger {
  position: relative;
  padding-bottom: 14px;
  margin-bottom: -14px;        /* extends hover area down so the dropdown stays open */
}
.menu-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 6px);
  min-width: 280px;
  background: var(--paper);
  border: 1px solid var(--ink-200);
  border-radius: 14px;
  padding: 10px;
  box-shadow: 0 20px 50px -20px rgba(10,77,92,.25);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  z-index: 60;
}
.menu-trigger:hover .menu-dropdown,
.menu-trigger:focus-within .menu-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}
.menu-dropdown a {
  display: block;
  padding: 12px 14px;
  border-radius: 10px;
  color: var(--ink-700);
  font-size: .95rem;
  transition: background .15s ease, color .15s ease;
}
.menu-dropdown a:hover { background: var(--teal-50); color: var(--teal-800); }
.menu-dropdown a .small {
  display: block;
  font-size: .78rem;
  color: var(--ink-400);
  margin-top: 2px;
}

/* ---------- Trust marquee ---------- */

.marquee {
  position: relative;
  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: 4rem;
  width: max-content;
  animation: marquee 32s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item {
  font-family: 'Archivo', sans-serif;
  font-weight: 500;
  font-size: 1.35rem;
  color: var(--teal-900);
  white-space: nowrap;
  display: inline-flex; align-items: center; gap: 1rem;
  letter-spacing: -0.018em;
  transition: color .2s ease;
}
.marquee-item:hover { color: var(--teal-700); }
.marquee-item .mk {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--teal-400);
  transform: rotate(45deg);   /* small diamond mark */
}

@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ---------- Story timeline ---------- */

.timeline {
  position: relative;
  padding: 2rem 0;
}
.timeline-track {
  position: absolute; left: 0; right: 0; top: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--teal-200), var(--teal-500));
  transform: translateY(-50%);
  border-radius: 999px;
  overflow: hidden;
}
.timeline-track::after {
  content: ''; position: absolute; inset: 0;
  background: var(--paper);
  transform-origin: left;
  transform: scaleX(1);
  transition: transform 1.4s cubic-bezier(.2,.7,.2,1);
}
.timeline.in-view .timeline-track::after { transform: scaleX(0); }

.timeline-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.timeline-node { display: flex; flex-direction: column; align-items: center; text-align: center; }
.timeline-dot {
  width: 14px; height: 14px; border-radius: 999px;
  background: var(--teal-500);
  box-shadow: 0 0 0 6px var(--paper), 0 0 0 7px var(--teal-200);
  margin-bottom: .75rem;
}
.timeline-year { font-weight: 600; color: var(--teal-800); font-size: .85rem; letter-spacing: .04em; }
.timeline-label { font-family: 'Archivo', sans-serif; font-weight: 600; color: var(--ink-900); margin-top: .25rem; }
.timeline-sub { font-size: .8rem; color: var(--ink-500); margin-top: .15rem; }

/* ---------- Stat badge (impact section) ---------- */

.stat-badge {
  background: linear-gradient(135deg, var(--teal-900), var(--teal-950));
  color: white;
  border-radius: var(--radius-lg);
  padding: 2.25rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.stat-badge::after {
  content: ''; position: absolute; inset: -50% -10% auto auto;
  width: 280px; height: 280px;
  background: radial-gradient(circle, rgba(45,212,191,.25), transparent 60%);
  pointer-events: none;
}
.stat-badge .num {
  font-family: 'Archivo', sans-serif;
  font-weight: 800;
  font-size: clamp(2.25rem, 4vw, 3rem);
  letter-spacing: -.03em;
  line-height: 1;
}
.stat-badge .num::after {
  content: ''; display: block; width: 56px; height: 3px;
  background: var(--teal-400); border-radius: 999px;
  margin: .75rem auto 0;
}
.stat-badge .label { color: var(--teal-200); font-weight: 600; margin-top: 1rem; }

/* ---------- Persona card (who this is for) ---------- */

.persona {
  background: var(--paper);
  border: 1px solid var(--ink-200);
  border-radius: var(--radius);
  padding: 1.75rem;
  position: relative;
  transition: border-color .2s ease, transform .25s ease, box-shadow .25s ease;
}
.persona:hover {
  border-color: var(--teal-300);
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}
.persona-icon {
  width: 44px; height: 44px;
  background: var(--teal-50);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: var(--teal-700);
  margin-bottom: 1rem;
}

/* ---------- CSOS callout (light teal, never dark) ---------- */

.csos-card {
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(45,212,191,.18), transparent 50%),
    radial-gradient(80% 80% at 100% 100%, rgba(20,184,166,.10), transparent 60%),
    linear-gradient(180deg, #ecfdf5 0%, #f0fdfa 100%);
  border: 1px solid var(--teal-200);
  border-radius: var(--radius-lg);
  padding: 3.25rem 2.25rem;
  position: relative;
  overflow: hidden;
}

/* ---------- FAQ ---------- */

.faq-item {
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-sm);
  background: var(--paper);
  overflow: hidden;
  transition: border-color .2s ease;
}
.faq-item[open] { border-color: var(--teal-300); }
.faq-item summary {
  padding: 1.25rem 1.5rem;
  font-family: 'Archivo', sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--ink-900);
  cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-weight: 400; font-size: 1.5rem; color: var(--teal-700);
  transition: transform .25s ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body {
  padding: 0 1.5rem 1.25rem;
  color: var(--ink-500);
  line-height: 1.65;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .9rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .98rem;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn-primary {
  background: var(--teal-700);
  color: white;
  box-shadow: 0 8px 24px -8px rgba(13,148,136,.45);
}
.btn-primary:hover { background: var(--teal-800); transform: translateY(-1px); }
.btn-secondary {
  background: var(--paper);
  color: var(--ink-700);
  border: 1.5px solid var(--ink-200);
}
.btn-secondary:hover { border-color: var(--teal-600); color: var(--teal-800); }
.btn-ghost { color: var(--teal-700); padding: .25rem 0; }
.btn-ghost:hover { color: var(--teal-900); }

/* ---------- Mobile nav ---------- */

.mobile-menu {
  position: fixed; inset: 64px 0 0 0;
  background: var(--paper);
  transform: translateY(-12px); opacity: 0; pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
  z-index: 40;
  border-top: 1px solid var(--ink-200);
}
.mobile-menu.open { opacity: 1; transform: translateY(0); pointer-events: auto; }

/* ---------- Infographic: Retention curve ---------- */

.infographic { background: var(--paper); border-radius: var(--radius); border: 1px solid var(--ink-200); padding: 1.5rem; }
.svg-line {
  fill: none; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: 1000; stroke-dashoffset: 1000;
  transition: stroke-dashoffset 2s ease;
}
.in-view .svg-line { stroke-dashoffset: 0; }

/* ---------- Page transitions / focus ---------- */

a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--teal-500);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- Testimonial wall (multi-column vertical scroll) ---------- */

.tw-wall {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  height: 540px;
  overflow: hidden;
  mask-image: linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent);
}
@media (min-width: 768px) { .tw-wall { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px){ .tw-wall { grid-template-columns: 1fr 1fr 1fr; } }

.tw-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  animation: tw-up 38s linear infinite;
  will-change: transform;
}
.tw-col.reverse { animation: tw-down 44s linear infinite; }
.tw-col.slow    { animation-duration: 56s; }
.tw-wall:hover .tw-col { animation-play-state: paused; }

@keyframes tw-up   { from { transform: translateY(0); } to { transform: translateY(-50%); } }
@keyframes tw-down { from { transform: translateY(-50%); } to { transform: translateY(0); } }

.tw-card {
  background: var(--paper);
  border: 1px solid var(--ink-200);
  border-radius: 16px;
  padding: 1.25rem 1.35rem;
  box-shadow: 0 1px 2px rgba(10,77,92,.04);
  transition: border-color .2s ease;
}
.tw-card:hover { border-color: var(--teal-300); }
.tw-card .stars { color: #f59e0b; font-size: .85rem; letter-spacing: .12em; }
.tw-card blockquote { color: var(--ink-700); line-height: 1.55; font-size: .95rem; margin-top: .5rem; }
.tw-card .meta { display: flex; align-items: center; gap: .55rem; margin-top: .85rem; padding-top: .85rem; border-top: 1px solid var(--ink-100); }
.tw-card .meta .src {
  font-size: .7rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--teal-700);
}
.tw-card .meta .who { font-size: .8rem; color: var(--ink-500); }

.tw-featured {
  background:
    radial-gradient(140% 80% at 0% 0%, rgba(45,212,191,.18), transparent 55%),
    linear-gradient(180deg, #ecfdf5 0%, #f0fdfa 100%);
  border: 1px solid var(--teal-200);
  border-radius: 24px;
  padding: 2.25rem;
}
.tw-featured blockquote {
  font-family: 'Archivo', sans-serif;
  font-weight: 500;
  font-size: 1.25rem;
  line-height: 1.55;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}
@media (min-width: 768px) {
  .tw-featured { padding: 3rem 3.5rem; }
  .tw-featured blockquote { font-size: 1.5rem; }
}

/* ---------- Case study (Passion.io) ---------- */

.cs-hero {
  background:
    radial-gradient(120% 70% at 100% 0%, rgba(45,212,191,.16), transparent 60%),
    linear-gradient(180deg, #ffffff 0%, #f0fdfa 100%);
  border: 1px solid var(--teal-100);
  border-radius: 28px;
  padding: 2.5rem;
}
@media (min-width:1024px){ .cs-hero { padding: 4rem; } }

.cs-stat {
  background: var(--paper);
  border: 1px solid var(--ink-200);
  border-radius: 16px;
  padding: 1.4rem 1.5rem;
}
.cs-stat .num {
  font-family: 'Archivo', sans-serif; font-weight: 800;
  font-size: 2rem; letter-spacing: -.025em; color: var(--teal-800);
  line-height: 1;
}
.cs-stat .label { color: var(--ink-500); font-size: .9rem; margin-top: .55rem; line-height: 1.4; }

.cs-section {
  background: var(--paper);
  border: 1px solid var(--ink-200);
  border-radius: 20px;
  padding: 2rem;
}
@media (min-width:1024px){ .cs-section { padding: 2.5rem 3rem; } }

.cs-h3 {
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: -.02em;
}
.cs-pull {
  border-left: 3px solid var(--teal-500);
  padding: .25rem 0 .25rem 1.25rem;
  font-family: 'Archivo', sans-serif;
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--ink-900);
  line-height: 1.5;
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .reveal, .marquee-track, .svg-line, .timeline-track::after { animation: none !important; transition: none !important; transform: none !important; opacity: 1 !important; }
}