/* ============================================================
   about.css — yin Solutions about page
   ============================================================ */

/* ── Reset & Base ── */
*, ::after, ::before {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  height: 100%;
}

:root {
  --bg:       #080810;
  --bg2:      #0f0f1a;
  --panel:    #13131f;
  --panel2:   #1a1a2e;
  --border:   rgba(255, 255, 255, 0.07);
  --border-v: rgba(160, 80, 220, 0.3);
  --text:     #e8e8f0;
  --muted:    #9090a8;
  --primary:  #7c3aed;
  --secondary:#a855f7;
  --accent:   #c084fc;
  --glow:     rgba(124, 58, 237, 0.35);
  --maxw:     1160px;
  --nav-h:    68px;
  --r-sm:     8px;
  --r-md:     14px;
  --r-lg:     20px;
  --r-xl:     28px;
}

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  line-height: 1.65;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  z-index: 0;
  opacity: .5;
  pointer-events: none;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── Cursor blur ── */
.cursor-blur {
  position: fixed;
  top: 0;
  left: 0;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, .12) 0, transparent 70%);
  transform: translate(-50%, -50%);
  z-index: 9998;
  transition: transform 80ms linear;
  pointer-events: none;
}

/* ── Wrap ── */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Navigation ── */
.topnav {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 8, 16, .75);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--border);
  transition: background .3s, box-shadow .3s;
}

.topnav.scrolled {
  background: rgba(8, 8, 16, .95);
  box-shadow: 0 1px 40px rgba(0, 0, 0, .6);
}

.topnav .wrap {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: Syne, sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -.3px;
}

.brand span { color: var(--accent); }

.logo {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: url("https://yinsolutions.org/logogreywhite.png") center/cover no-repeat;
  border: 1px solid var(--border-v);
  flex-shrink: 0;
}

.navlinks {
  display: flex;
  align-items: center;
  gap: 2px;
}

.navlinks a {
  padding: .45rem .85rem;
  border-radius: 999px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--muted);
  border: 1px solid transparent;
  transition: color .2s, background .2s, border-color .2s;
}

.navlinks a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, .05);
}

.navlinks a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-color: transparent;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 20px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

/* ── Reveal animation ── */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .7s cubic-bezier(.22, 1, .36, 1), transform .7s cubic-bezier(.22, 1, .36, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ── Section shared ── */
section { scroll-margin-top: calc(var(--nav-h) + 12px); }

.section-label {
  display: block;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: .75rem;
}

.section-title {
  font-family: Syne, sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.4px;
  margin-bottom: .75rem;
}

.section-sub {
  color: var(--muted);
  max-width: 52ch;
  font-size: 1rem;
  margin-bottom: 3rem;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: .8rem 1.5rem;
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: .9rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: .25s cubic-bezier(.22, 1, .36, 1);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn:active { transform: scale(.97); }

.btn.primary {
  background: linear-gradient(135deg, var(--primary) 0, var(--secondary) 100%);
  color: #fff;
  box-shadow: 0 0 0 0 var(--glow);
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--glow);
}

.btn.ghost {
  background: rgba(255, 255, 255, .04);
  color: var(--text);
  border-color: var(--border);
}

.btn.ghost:hover {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .15);
  transform: translateY(-2px);
}

/* ── Hero ── */
.about-hero {
  position: relative;
  overflow: hidden;
  min-height: calc(100svh - var(--nav-h));
  display: flex;
  align-items: center;
  padding: 80px 24px 100px;
  background: linear-gradient(180deg, rgba(124, 58, 237, .09) 0%, transparent 100%);
}

.about-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .018) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 85% 100% at 50% 0%, black 30%, transparent 100%);
  pointer-events: none;
}

.about-hero-glow {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, .18) 0, transparent 70%);
  pointer-events: none;
}

.about-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.about-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(124, 58, 237, .1);
  border: 1px solid rgba(124, 58, 237, .28);
  border-radius: 999px;
  padding: .3rem .9rem;
  margin-bottom: 1.4rem;
}

.about-hero-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--secondary);
  animation: about-pulse 2s infinite;
}

@keyframes about-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .45; transform: scale(.75); }
}

.about-headline {
  font-family: Syne, sans-serif;
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -1px;
  margin-bottom: 1.25rem;
  color: var(--text);
}

.about-headline em {
  font-style: normal;
  background: linear-gradient(135deg, #c084fc 0%, #7c3aed 50%, #a855f7 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.about-sub {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 52ch;
  line-height: 1.78;
  margin-bottom: 2rem;
}

.about-cta-row {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
}

/* ── Pillar Cards ── */
.about-pillars { padding: 80px 24px; }

.about-pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.about-pillar {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 2rem 1.75rem;
  position: relative;
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s, transform .4s cubic-bezier(.22, 1, .36, 1);
}

.about-pillar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(168, 85, 247, .4), transparent);
}

.about-pillar:hover {
  border-color: var(--border-v);
  box-shadow: 0 16px 48px rgba(124, 58, 237, .15);
  transform: translateY(-6px);
}

.about-pillar-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(124, 58, 237, .1);
  border: 1px solid rgba(124, 58, 237, .22);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.1rem;
}

.about-pillar-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.about-pillar h2 {
  font-family: Syne, sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -.2px;
  margin-bottom: .65rem;
  color: var(--text);
}

.about-pillar p {
  font-size: .9rem;
  color: var(--muted);
  line-height: 1.75;
}

/* ── Services ── */
.about-services {
  padding: 80px 24px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 1rem;
}

.about-service-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 1.4rem 1.35rem;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: border-color .25s, transform .3s cubic-bezier(.22, 1, .36, 1);
}

.about-service-item:hover {
  border-color: var(--border-v);
  transform: translateY(-3px);
}

.about-service-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: rgba(124, 58, 237, .1);
  border: 1px solid rgba(124, 58, 237, .2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.about-service-icon svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.65;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.about-service-item h3 {
  font-family: Syne, sans-serif;
  font-size: .92rem;
  font-weight: 700;
  margin-bottom: .35rem;
  color: var(--text);
}

.about-service-item p {
  font-size: .85rem;
  color: var(--muted);
  line-height: 1.65;
}

/* ── Stats ── */
.about-stats { padding: 80px 24px; }

.about-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  margin-top: 2.5rem;
}

.about-stat {
  background: var(--panel);
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  transition: background .25s;
}

.about-stat:hover { background: var(--panel2); }

.about-stat-num {
  font-family: Syne, sans-serif;
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1;
  background: linear-gradient(135deg, #fff 40%, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.about-stat-num::after {
  content: '+';
  font-size: .55em;
  opacity: .65;
}

.about-stat-label {
  font-size: .82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--muted);
}

/* ── Portfolio ── */
.about-portfolio {
  padding: 80px 24px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 1rem;
}

.about-portfolio-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: block;
  text-decoration: none;
  color: inherit;
  position: relative;
  transition: border-color .3s, box-shadow .4s, transform .4s cubic-bezier(.22, 1, .36, 1);
}

.about-portfolio-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(168, 85, 247, .35), transparent);
  opacity: 0;
  transition: opacity .3s;
}

.about-portfolio-card:hover {
  border-color: var(--border-v);
  box-shadow: 0 20px 56px rgba(124, 58, 237, .2);
  transform: translateY(-7px);
}

.about-portfolio-card:hover::before { opacity: 1; }

.about-portfolio-thumb {
  height: 200px;
  overflow: hidden;
  background: var(--panel2);
}

.about-portfolio-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .6s cubic-bezier(.22, 1, .36, 1);
}

.about-portfolio-card:hover .about-portfolio-thumb img {
  transform: scale(1.06);
}

.about-portfolio-body { padding: 1.35rem 1.4rem; }

.about-portfolio-tag {
  display: inline-block;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(124, 58, 237, .1);
  border: 1px solid rgba(124, 58, 237, .22);
  border-radius: 999px;
  padding: .22rem .7rem;
  margin-bottom: .65rem;
}

.about-portfolio-body h3 {
  font-family: Syne, sans-serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: .45rem;
  color: var(--text);
}

.about-portfolio-body p {
  font-size: .86rem;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: .9rem;
}

.about-portfolio-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent);
}

.about-portfolio-link svg {
  width: 13px;
  height: 13px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform .2s;
}

.about-portfolio-card:hover .about-portfolio-link svg {
  transform: translate(2px, -2px);
}

/* ── Contact ── */
.contact { padding: 100px 24px; }

.form-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  margin-top: 2rem;
}

.form-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(168, 85, 247, .5), transparent);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full { grid-column: 1 / -1; }

label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: .3px;
  text-transform: uppercase;
}

input, textarea {
  width: 100%;
  background: rgba(255, 255, 255, .03);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: .95rem;
  padding: .75rem 1rem;
  outline: 0;
  transition: border-color .2s, box-shadow .2s;
}

input:focus, textarea:focus {
  border-color: rgba(168, 85, 247, .5);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, .12);
}

textarea { min-height: 130px; resize: vertical; }

.gdpr-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

input[type=checkbox] {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--border-v);
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  flex-shrink: 0;
  transition: background .2s, border-color .2s;
  position: relative;
}

input[type=checkbox]:checked {
  background: var(--primary);
  border-color: var(--primary);
}

input[type=checkbox]:checked::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 5px; height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: translate(-50%, -60%) rotate(45deg);
}

.gdpr-container label {
  font-size: .85rem;
  color: var(--muted);
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
}

.gdpr-container label a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.gdpr-container label a:hover { opacity: .8; }

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 24px;
  text-align: center;
  font-size: .85rem;
  color: var(--muted);
}

.twitter-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--muted);
  font-weight: 500;
  transition: color .2s;
}

.twitter-link:hover { color: #fff; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .about-pillars-grid,
  .about-services-grid,
  .about-portfolio-grid {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 820px) {
  .menu-toggle { display: flex; }

  .navlinks {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(8, 8, 16, .97);
    backdrop-filter: blur(20px);
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s;
  }

  .navlinks.open { max-height: 500px; }

  .navlinks a {
    padding: 1rem 1.5rem;
    border-radius: 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--border);
  }

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

@media (max-width: 600px) {
  .about-hero {
    padding: 60px 20px 80px;
    min-height: auto;
  }

  .about-pillars-grid,
  .about-services-grid,
  .about-portfolio-grid {
    grid-template-columns: 1fr;
  }

  .about-headline { font-size: 2.2rem; }
  .about-cta-row { flex-direction: column; }

  .about-pillar,
  .about-service-item { padding: 1.4rem 1.25rem; }
}