/* ═══════════════════════════════════════
   ECHO — about.css
   About page only styles
   ═══════════════════════════════════════ */

.about-hero {
  position: relative; z-index: 1;
  min-height: 100svh; display: flex; flex-direction: column; justify-content: center;
  padding-top: 7rem; border-bottom: 1px solid var(--border);
  background: radial-gradient(ellipse at 75% 50%, #d8c8f8 0%, transparent 65%);
  overflow: hidden;
}
.about-hero__inner { position: relative; z-index: 2; padding-bottom: 6rem; }
.about-hero__tag { font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 1.5rem; }
.about-hero__headline {
  font-family: var(--font-head); font-size: clamp(4rem,11vw,10rem);
  font-weight: 600; line-height: 1.0; letter-spacing: -0.02em;
  color: var(--text); margin-bottom: 2rem; max-width: 12ch;
}
.about-hero__headline em {
  font-style: italic; font-weight: 400;
  background: linear-gradient(135deg, #9b6dff, #5b2be0);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.about-hero__sub { max-width: 48ch; font-size: 1.1rem; color: var(--text-muted); line-height: 1.7; }
.about-hero__scroll {
  position: absolute; bottom: 2.5rem; left: clamp(1.25rem,5vw,3rem); z-index: 2;
  display: flex; align-items: center; gap: 0.75rem;
  font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted);
}
.about-hero__scroll-line { width: 40px; height: 1px; background: var(--text-muted); position: relative; overflow: hidden; }
.about-hero__scroll-line::after {
  content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
  background: var(--accent); animation: scrollLinePulse 2s ease-in-out infinite;
}
@keyframes scrollLinePulse { 0% { left: -100%; } 50% { left: 0%; } 100% { left: 100%; } }

.about-manifesto { background: var(--surface); }
.about-manifesto__inner { max-width: 860px; }
.about-manifesto__quote {
  font-family: var(--font-head); font-size: clamp(2rem,4.5vw,3.4rem);
  font-weight: 600; font-style: italic; line-height: 1.2; letter-spacing: -0.01em;
  color: var(--text); border: none; padding: 0; margin: 1.5rem 0 2.5rem; position: relative;
}
.about-manifesto__quote::before { content: ''; display: block; width: 32px; height: 2px; background: var(--accent); margin-bottom: 1.5rem; }
.about-manifesto__body { font-size: 1rem; color: var(--text-muted); line-height: 1.8; max-width: 62ch; }

.about-principles__grid {
  display: grid; grid-template-columns: repeat(2,1fr);
  gap: 1.5px; background: var(--border);
  border: 1.5px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-top: 3rem;
}
.about-principle {
  background: var(--surface); padding: clamp(2rem,4vw,3.5rem);
  position: relative; overflow: hidden; transition: background var(--transition);
}
.about-principle:hover { background: var(--surface-2); }
.about-principle__echo-dot {
  position: absolute; top: 2rem; right: 2rem;
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent); opacity: 0.3;
}
.about-principle__echo-dot::before,
.about-principle__echo-dot::after {
  content: ''; position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%); border-radius: 50%; border: 1px solid var(--accent);
  animation: principleEchoPulse 3s ease-out infinite;
}
.about-principle__echo-dot::before { width: 8px; height: 8px; animation-delay: calc(var(--p-i) * 0.75s); }
.about-principle__echo-dot::after  { width: 8px; height: 8px; animation-delay: calc(var(--p-i) * 0.75s + 0.4s); }
@keyframes principleEchoPulse {
  0%   { width: 8px;  height: 8px;  opacity: 0.5; }
  100% { width: 60px; height: 60px; opacity: 0; }
}
.about-principle__num { font-family: var(--font-head); font-size: 0.8rem; font-weight: 600; color: var(--accent); opacity: 0.5; letter-spacing: 0.05em; margin-bottom: 1.5rem; display: block; }
.about-principle__title { font-family: var(--font-head); font-size: clamp(1.4rem,2.2vw,1.9rem); font-weight: 600; line-height: 1.15; color: var(--text); margin-bottom: 1rem; }
.about-principle__text { font-size: 0.9rem; color: var(--text-muted); line-height: 1.75; }

.about-numbers { background: var(--bg); }
.about-numbers__inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(3rem,7vw,8rem); align-items: center; }
.about-numbers__left p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.75; max-width: 42ch; }
.about-numbers__left .section-title em {
  font-style: italic; font-weight: 400;
  background: linear-gradient(135deg, #9b6dff, #5b2be0);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.about-numbers__right { display: flex; flex-direction: column; gap: 0; border: 1.5px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.about-stat {
  padding: 1.75rem 2rem; border-bottom: 1px solid var(--border);
  position: relative; background: var(--surface);
  opacity: 0; transform: translateX(20px);
  transition: background var(--transition), opacity 0.6s ease calc(var(--s-i)*.12s), transform 0.6s ease calc(var(--s-i)*.12s);
}
.about-stat.visible { opacity: 1; transform: none; }
.about-stat:last-child { border-bottom: none; }
.about-stat:hover { background: var(--surface-2); }
.about-stat__num {
  font-family: var(--font-head); font-size: clamp(2rem,3.5vw,3rem); font-weight: 700; line-height: 1;
  background: linear-gradient(135deg, #9b6dff, #5b2be0);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  display: block; margin-bottom: 0.3rem; position: relative;
}
.about-stat__num::after {
  content: attr(data-value); position: absolute; top: 0; left: 0;
  background: linear-gradient(135deg, #9b6dff, #5b2be0);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  opacity: 0; white-space: nowrap;
  animation: statEcho 4s ease-in-out infinite calc(var(--s-i) * 1s);
}
.about-stat__label { font-size: 0.85rem; color: var(--text-muted); }
.about-stat__bar { position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; background: var(--border); }
.about-stat__bar-fill { height: 100%; width: 0%; background: linear-gradient(90deg, #9b6dff, #5b2be0); transition: width 1s ease calc(var(--s-i)*.15s); }
.about-stat.visible .about-stat__bar-fill { width: 100%; }

.about-cta { background: var(--surface); }
.about-cta__inner {
  border: 1.5px solid var(--border); border-radius: var(--radius);
  padding: clamp(3rem,6vw,6rem); text-align: center;
  position: relative; overflow: hidden; background: var(--bg);
}
.about-cta__rings { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; pointer-events: none; opacity: 0.6; }
.about-cta__headline {
  font-family: var(--font-head); font-size: clamp(2.2rem,5vw,4rem);
  font-weight: 600; line-height: 1.15; letter-spacing: -0.01em;
  color: var(--text); margin: 1rem 0 2.5rem; position: relative; z-index: 1;
}
.about-cta__headline em {
  font-style: italic; font-weight: 400;
  background: linear-gradient(135deg, #9b6dff, #5b2be0);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.about-cta__actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; position: relative; z-index: 1; }
.about-cta .section-label { position: relative; z-index: 1; }

@media (max-width: 900px) {
  .about-numbers__inner   { grid-template-columns: 1fr; }
  .about-principles__grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .about-hero__scroll { display: none; }
  .about-cta__inner   { padding: 2.5rem 1.5rem; }
}


/* ══════════════════════════════════════
   WHY ECHO — dark panel
══════════════════════════════════════ */
.about-why {
  background: var(--text);
  padding: clamp(4rem, 8vw, 7rem) 0;
  position: relative; overflow: hidden;
}
.about-why::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 60%, rgba(91,43,224,0.16) 0%, transparent 60%);
  pointer-events: none;
}
.about-why__label {
  font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: rgba(255,255,255,0.25); margin-bottom: 2.5rem; display: block;
}
.about-why__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative; z-index: 1;
}
.about-why__item {
  padding: 2rem 1.75rem;
  border-right: 1px solid rgba(255,255,255,0.07);
  transition: background 0.3s ease;
  position: relative;
}
.about-why__item:last-child { border-right: none; }
.about-why__item::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, rgba(91,43,224,0.8), transparent);
  opacity: 0; transition: opacity 0.3s ease;
}
.about-why__item:hover { background: rgba(255,255,255,0.03); }
.about-why__item:hover::before { opacity: 1; }
.about-why__num {
  font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: rgba(91,43,224,0.65); display: block; margin-bottom: 1rem;
}
.about-why__title {
  font-family: var(--font-head);
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  font-weight: 600; font-style: italic;
  color: #fff; line-height: 1.2; margin-bottom: 0.85rem;
}
.about-why__text {
  font-size: 0.8rem; color: rgba(255,255,255,0.38);
  line-height: 1.72; margin: 0;
}


/* ══════════════════════════════════════
   PROCESS STRIP
══════════════════════════════════════ */
.about-process { background: var(--surface); }
.about-process__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 3rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.about-process__step {
  padding: clamp(1.75rem, 3vw, 2.5rem);
  border-right: 1px solid var(--border);
  background: var(--bg);
  position: relative;
  transition: background var(--transition);
}
.about-process__step:last-child { border-right: none; }
.about-process__step:hover { background: var(--surface-2); }
.about-process__step::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 2px; height: 100%;
  background: var(--accent); opacity: 0;
  transition: opacity var(--transition);
}
.about-process__step:hover::before { opacity: 1; }
.about-process__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); opacity: 0.4;
  margin-bottom: 1.25rem;
  box-shadow: 0 0 0 4px rgba(91,43,224,0.1);
}
.about-process__num {
  font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); opacity: 0.6; display: block; margin-bottom: 0.5rem;
}
.about-process__title {
  font-family: var(--font-head);
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  font-weight: 600; color: var(--text);
  margin-bottom: 0.6rem; line-height: 1.2;
}
.about-process__text {
  font-size: 0.82rem; color: var(--text-muted);
  line-height: 1.7; margin-bottom: 1.25rem;
}
.about-process__time {
  font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent); opacity: 0.5;
  display: inline-block;
  border: 1px solid rgba(91,43,224,0.2);
  border-radius: 100px; padding: 0.2rem 0.65rem;
}


/* ── Responsive for new sections ── */
@media (max-width: 860px) {
  .about-why__grid { grid-template-columns: 1fr 1fr; }
  .about-why__item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.07); }
  .about-why__item:nth-child(odd) { border-right: 1px solid rgba(255,255,255,0.07); }
  .about-why__item:nth-last-child(-n+2) { border-bottom: none; }
  .about-process__steps { grid-template-columns: 1fr 1fr; }
  .about-process__step { border-right: none; border-bottom: 1px solid var(--border); }
  .about-process__step:nth-child(odd) { border-right: 1px solid var(--border); }
  .about-process__step:nth-last-child(-n+2) { border-bottom: none; }
}
@media (max-width: 480px) {
  .about-why__grid { grid-template-columns: 1fr; }
  .about-why__item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.07); }
  .about-why__item:last-child { border-bottom: none; }
  .about-process__steps { grid-template-columns: 1fr; }
  .about-process__step { border-right: none; }
  .about-process__step:last-child { border-bottom: none; }
}