/*
 * Niyutam Process Flow — process.css
 */

/* ─── Tokens ────────────────────────────────────────────────── */
:root {
  --proc-bg:             #ffffff;
  --proc-node-bg:        #F5F5F3;
  --proc-node-border:    #e0e0e0;
  --proc-active-bg:      #0a0a0f;
  --proc-active-border:  #C8FF00;
  --proc-active-text:    #C8FF00;
  --proc-accent:         #C8FF00;
  --proc-text:           #0a0a0f;
  --proc-muted:          #0a0a0f;
  --proc-circle:         56px;
  --proc-ease:           cubic-bezier(0.25, 1, 0.5, 1);
  --proc-font:           'Satoshi', system-ui, sans-serif;
  --proc-font-head:      'Clash Display', system-ui, sans-serif;
}

/* ─── Scoped reset ──────────────────────────────────────────── */
.process *, .process *::before, .process *::after {
  box-sizing: border-box; margin: 0; padding: 0;
}

/* ─── Section ────────────────────────────────────────────────── */
.process {
  background: linear-gradient(to bottom, #ffffff, #f7f9fc);
  padding-block: clamp(4rem, 8vw, 7rem);
}

.process__container {
  max-width: 1100px;
  margin: 0 auto;
  padding-inline: clamp(1rem, 4vw, 3rem);
}

/* ─── Heading ────────────────────────────────────────────────── */
.process__header {
  text-align: center;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.process__heading {
  font-family: var(--proc-font-head);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--proc-text);
  margin-bottom: 0.75rem;
}

.process__sub {
  font-family: var(--proc-font);
  font-size: clamp(15px, 1.25vw, 18px);
  color: var(--proc-muted);
  line-height: 1.6;
}

/* ─── Flow wrap — SVG sits absolute inside ───────────────────── */
.process__flow-wrap {
  position: relative;
}

.process__svg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  overflow: visible;
  z-index: 0;
}

/* SVG lines */
.proc-line {
  fill: none;
  stroke: #e5e7eb;
  stroke-width: 2;
  stroke-linecap: round;
  transition: stroke 0.3s ease;
}

.proc-line.is-lit {
  stroke: var(--proc-accent);
}

/* ─── Flow — mobile default: vertical stack ──────────────────── */
.process__flow {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ─── Node button — mobile: full-width card ──────────────────── */
.process__node {
  /* reset */
  background: none; border: none; padding: 0;
  font: inherit; cursor: pointer;
  /* card layout */
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 1rem;
  width: 100%;
  padding: 0.875rem 1.25rem;
  border-radius: 12px;
  border: 1.5px solid var(--proc-node-border);
  background: var(--proc-node-bg);
  text-align: left;
  /* entrance: starts invisible */
  opacity: 0;
  transform: translateY(18px);
  transition:
    border-color 0.3s ease,
    background   0.3s ease,
    box-shadow   0.3s ease;
}

.process__node.is-visible {
  animation: proc-node-in 0.6s var(--proc-ease) forwards;
  animation-delay: var(--proc-stagger, 0ms);
}

@keyframes proc-node-in {
  to { opacity: 1; transform: translateY(0); }
}

.process__node.is-active {
  border-color: var(--proc-active-border);
  background: var(--proc-active-bg);
}

.process__node:hover:not(.is-active) {
  border-color: rgba(0,0,0,0.22);
  background: #ebebea;
}

.process__node:focus-visible {
  outline: 2px solid var(--proc-accent);
  outline-offset: 3px;
  border-radius: 12px;
}

/* ─── Circle ─────────────────────────────────────────────────── */
.process__circle {
  width: var(--proc-circle);
  height: var(--proc-circle);
  border-radius: 50%;
  flex-shrink: 0;
  background: #ffffff;
  border: 1.5px solid var(--proc-node-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background    0.3s ease,
    border-color  0.3s ease,
    box-shadow    0.3s ease;
}

.process__node.is-active .process__circle {
  background: #000000;
  border-color: var(--proc-active-border);
  box-shadow: 0 0 0 4px rgba(163,255,0,0.2);
  transform: scale(1.1);
}

.process__node:hover .process__circle {
  transform: scale(1.1);
}

.process__num {
  font-family: var(--proc-font);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--proc-muted);
  transition: color 0.3s ease;
}

.process__node.is-active .process__num { color: #ffffff; }

/* ─── Label ──────────────────────────────────────────────────── */
.process__label {
  font-family: var(--proc-font);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--proc-text);
  line-height: 1.3;
  transition: color 0.3s ease, font-weight 0.3s ease;
}

.process__node:hover .process__label { font-weight: 700; }
.process__node.is-active .process__label { color: var(--proc-active-text); font-weight: 700; }

/* ─── Tablet: 3-column grid ──────────────────────────────────── */
@media (min-width: 640px) and (max-width: 1023px) {
  .process__flow {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem 1.5rem;
    justify-items: center;
  }

  .process__node {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 0;
    border: none !important;
    background: none !important;
    box-shadow: none !important;
    width: auto;
    min-width: 90px;
    gap: 0.75rem;
  }

  .process__node:hover:not(.is-active) { background: none !important; }

  /* Keep circle styling on tablet */
  .process__node.is-active .process__circle {
    background: #000000;
    border-color: var(--proc-active-border);
    box-shadow: 0 0 0 4px rgba(163,255,0,0.2);
  }

  .process__label { font-size: 0.875rem; color: var(--proc-text) !important; }
}

/* ─── Desktop: horizontal row ────────────────────────────────── */
@media (min-width: 1024px) {
  .process__flow {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0;
    padding-bottom: 0.5rem;
  }

  .process__node {
    flex: 1;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 0;
    border: none !important;
    background: none !important;
    box-shadow: none !important;
    gap: 0.875rem;
  }

  .process__node:hover:not(.is-active) { background: none !important; }

  .process__label {
    font-size: 0.875rem;
    color: var(--proc-text) !important;
    white-space: nowrap;
  }
}

/* ─── Panel slide-open wrapper ───────────────────────────────── */
/*
 * CSS grid row trick: animates to actual content height,
 * no fixed max-height needed.
 */
.process__panels-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.45s var(--proc-ease);
  margin-top: 2.5rem;
}

.process__panels-wrap.is-open {
  grid-template-rows: 1fr;
}

.process__panels {
  overflow: hidden;
}

/* ─── Individual panel ───────────────────────────────────────── */
.process__panel[hidden] { display: none; }

.process__panel.is-leaving {
  animation: proc-panel-out 0.2s ease both;
}

.process__panel.is-entering {
  animation: proc-panel-in 0.3s ease both;
}

@keyframes proc-panel-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes proc-panel-out {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-5px); }
}

.process__panel-inner {
  background: #ffffff;
  border: none;
  box-shadow: 0 20px 50px rgba(0,0,0,0.08);
  border-left: 4px solid var(--proc-accent);
  border-radius: 20px;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  display: grid;
  gap: 2rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease;
}

.process__panel-inner:hover {
  transform: translateY(-4px);
}

.process__panel-bg-num {
  font-size: 140px;
  font-weight: 800;
  font-family: var(--proc-font-head);
  opacity: 0.03;
  position: absolute;
  right: 20px;
  bottom: -20px;
  pointer-events: none;
  line-height: 1;
}

@media (min-width: 768px) {
  .process__panel-inner {
    grid-template-columns: 1.2fr 1.5fr;
    gap: 3.5rem;
    align-items: start;
  }
}

/* ─── Panel left ─────────────────────────────────────────────── */
.process__panel-left {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.process__panel-badge {
  display: inline-block;
  font-family: var(--proc-font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #000000;
  background: var(--proc-accent);
  border-radius: 99px;
  padding: 4px 12px;
  width: fit-content;
  margin-bottom: 0.5rem;
}

.process__panel-title {
  font-family: var(--proc-font-head);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--proc-text);
  line-height: 1.1;
}

.process__panel-tagline {
  font-family: var(--proc-font);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--proc-text);
  line-height: 1.55;
}

/* ─── Panel right ────────────────────────────────────────────── */
.process__panel-right {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.process__panel-desc {
  font-family: var(--proc-font);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--proc-text);
}

.process__panel-divider {
  border-top: 1px solid rgba(0,0,0,0.08);
  margin-block: 0.5rem;
}

.process__panel-deliverables {
  /* Separated above by divider */
}

.process__deliv-label {
  font-family: var(--proc-font);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--proc-text);
  margin-bottom: 1rem;
}

.process__deliv-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.process__deliv-list li {
  font-family: var(--proc-font);
  font-size: 0.95rem;
  color: var(--proc-text);
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.process__deliv-icon {
  color: var(--proc-accent);
  flex-shrink: 0;
  margin-top: 0.1em;
}

/* ─── Reduced motion ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .process__node.is-visible      { animation: none; opacity: 1; transform: none; }
  .proc-line.is-lit              { animation: none; }
  .process__panel.is-entering    { animation: none; }
  .process__panels-wrap          { transition: none; }
}