/* ==========================================================================
   PROCESS — PREMIUM TIMELINE SECTION (sysint.html only, testing mode)
   Self-contained design system, prefixed `pp-` to avoid clashing with the
   shared `.process-step` styles in service-page.css used on other pages.
   ========================================================================== */

.process-premium {
  --pp-primary: #246BFF;
  --pp-secondary: #8B3DFF;
  --pp-accent: #00C2FF;
  --pp-success: #22C55E;
  --pp-danger: #FF4D6D;
  --pp-bg: #FFFFFF;
  --pp-surface: #F8FBFF;
  --pp-text: #111827;
  --pp-text-muted: #667085;
  --pp-glass: rgba(255, 255, 255, 0.62);
  --pp-glass-border: rgba(17, 24, 39, 0.14);
  --pp-line: rgba(17, 24, 39, 0.08);

  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 40px 1.5rem;
  background: var(--pp-bg);
  color: var(--pp-text);
}

html[data-theme="dark"] .process-premium {
  --pp-bg: #0A0E17;
  --pp-surface: #0D1320;
  --pp-text: #F3F4F6;
  --pp-text-muted: #9AA4B2;
  --pp-glass: rgba(255, 255, 255, 0.05);
  --pp-glass-border: rgba(255, 255, 255, 0.18);
  --pp-line: rgba(255, 255, 255, 0.08);
}

.process-premium * { box-sizing: border-box; }

.pp-inner { position: relative; z-index: 2; max-width: var(--max-width, 1280px); margin: 0 auto; }

/* ---------------------------------------------------------------------- */
/* Background: blobs, mesh, dot-grid, floating particles                  */
/* ---------------------------------------------------------------------- */
.pp-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }

.pp-blob { display: none; }
.process-premium.pp-in-view .pp-blob { animation-play-state: running; }
.pp-blob-1 { width: 20rem; height: 20rem; top: -10rem; left: -8rem; background: radial-gradient(circle, rgba(36,107,255,0.035), transparent 70%); }
.pp-blob-2 { width: 18rem; height: 18rem; bottom: -8rem; right: -6rem; background: radial-gradient(circle, rgba(139,61,255,0.03), transparent 70%); animation-duration: 24s; animation-direction: reverse; }
.pp-blob-3 { width: 15rem; height: 15rem; top: 32%; left: 48%; background: radial-gradient(circle, rgba(0,194,255,0.025), transparent 70%); animation-duration: 27s; animation-delay: -8s; }

html[data-theme="dark"] .pp-blob-1 { background: radial-gradient(circle, rgba(36,107,255,0.18), transparent 70%); }
html[data-theme="dark"] .pp-blob-2 { background: radial-gradient(circle, rgba(139,61,255,0.16), transparent 70%); }
html[data-theme="dark"] .pp-blob-3 { background: radial-gradient(circle, rgba(0,194,255,0.13), transparent 70%); }

@keyframes ppDrift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(2.2rem, -2.6rem) scale(1.06); }
  66% { transform: translate(-1.8rem, 1.6rem) scale(0.96); }
}

.pp-mesh { display: none; }

.pp-dotgrid {
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(17,24,39,0.10) 1px, transparent 1px);
  background-size: 28px 28px;
  -webkit-mask-image: radial-gradient(ellipse 65% 55% at 50% 38%, #000 0%, transparent 78%);
  mask-image: radial-gradient(ellipse 65% 55% at 50% 38%, #000 0%, transparent 78%);
  opacity: 0.6;
}
html[data-theme="dark"] .pp-dotgrid { background-image: radial-gradient(rgba(255,255,255,0.14) 1px, transparent 1px); }

.pp-particle {
  position: absolute; width: 4px; height: 4px; border-radius: 50%;
  background: var(--pp-primary); opacity: 0;
  box-shadow: 0 0 8px 1px currentColor;
  animation: ppParticleFloat 9s ease-in-out infinite; animation-play-state: paused;
}
.process-premium.pp-in-view .pp-particle { animation-play-state: running; }
.pp-particle:nth-child(1) { top: 14%; left: 8%; color: var(--pp-danger); animation-delay: 0s; }
.pp-particle:nth-child(2) { top: 68%; left: 15%; color: var(--pp-primary); animation-delay: 1.4s; }
.pp-particle:nth-child(3) { top: 22%; left: 88%; color: var(--pp-secondary); animation-delay: 2.8s; }
.pp-particle:nth-child(4) { top: 78%; left: 82%; color: var(--pp-accent); animation-delay: 4.2s; }
.pp-particle:nth-child(5) { top: 46%; left: 5%; color: var(--pp-success); animation-delay: 5.6s; }
.pp-particle:nth-child(6) { top: 40%; left: 94%; color: var(--pp-secondary); animation-delay: 3s; }

@keyframes ppParticleFloat {
  0% { opacity: 0; transform: translate(0, 0); }
  15% { opacity: 0.7; }
  50% { transform: translate(0.6rem, -1.4rem); }
  85% { opacity: 0.55; }
  100% { opacity: 0; transform: translate(-0.4rem, -2.6rem); }
}

/* ---------------------------------------------------------------------- */
/* Header                                                                  */
/* ---------------------------------------------------------------------- */
.pp-header {
  text-align: center; max-width: 46rem; margin: 0 auto;
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.8s cubic-bezier(.16,.84,.44,1), transform 0.8s cubic-bezier(.16,.84,.44,1);
}
.process-premium.pp-in-view .pp-header { opacity: 1; transform: translateY(0); }

.pp-badge {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.35rem 0.9rem; border-radius: 999px;
  background: var(--red-50); border: 1px solid rgba(239, 68, 68, 0.15);
  font-size: 0.7rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--red-700);
}
html[data-theme="dark"] .pp-badge { background: rgba(239, 68, 68, 0.12); color: #fca5a5; }

.pp-title {
  font-family: 'Inter', var(--font-display, sans-serif), sans-serif;
  font-weight: 800; letter-spacing: -0.03em; line-height: 1.14;
  font-size: clamp(1.65rem, 3.2vw, 2.5rem);
  color: var(--pp-text); margin: 0.8rem 0 0;
}
.pp-title-gradient {
  display: inline; line-height: inherit; background-size: 300% auto;
  background-image: linear-gradient(90deg, var(--pp-primary), var(--pp-secondary), var(--pp-accent), var(--pp-secondary), var(--pp-primary));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: ppGradientMove 7s linear infinite;
}
@keyframes ppGradientMove {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

.pp-subtitle {
  margin-top: 0.65rem; font-size: clamp(0.92rem, 1.2vw, 1rem);
  font-weight: 500; color: var(--pp-text-muted); line-height: 1.55;
}

/* ---------------------------------------------------------------------- */
/* Flow / track                                                           */
/* ---------------------------------------------------------------------- */
.pp-flow { position: relative; }

.pp-connector { position: absolute; top: 0; left: 0; width: 100%; height: 160px; z-index: 1; display: none; pointer-events: none; }
.pp-connector-rail { stroke: var(--pp-line); stroke-width: 2; fill: none; stroke-dasharray: 1 10; stroke-linecap: round; }
.pp-connector-path {
  stroke: url(#ppLineGradient); stroke-width: 2.5; fill: none; stroke-linecap: round;
  filter: url(#ppGlow);
  stroke-dasharray: 1500; stroke-dashoffset: 1500;
  transition: stroke-dashoffset 1.6s cubic-bezier(.16,.84,.44,1);
}
.process-premium.pp-in-view .pp-connector-path { stroke-dashoffset: 0; }
.pp-connector-arrow { fill: none; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; opacity: 0; transition: opacity 0.6s ease 1.4s; }
.process-premium.pp-in-view .pp-connector-arrow { opacity: 0.85; }
.pp-connector-dot { opacity: 0; transition: opacity 0.5s ease 1.5s; }
.process-premium.pp-in-view .pp-connector-dot { opacity: 1; }

.pp-track {
  position: relative; z-index: 2;
  display: flex; flex-direction: column; gap: 0;
}

.pp-item {
  position: relative;
  display: flex; flex-direction: row; align-items: flex-start; gap: 0.9rem;
  text-align: left;
  padding-bottom: 1.5rem;
  opacity: 0; transform: translateY(22px);
  transition: opacity 0.7s cubic-bezier(.16,.84,.44,1), transform 0.7s cubic-bezier(.16,.84,.44,1);
}
.process-premium.pp-in-view .pp-item { opacity: 1; transform: translateY(0); }
.process-premium.pp-in-view .pp-item:nth-child(1) { transition-delay: 0.05s; }
.process-premium.pp-in-view .pp-item:nth-child(2) { transition-delay: 0.18s; }
.process-premium.pp-in-view .pp-item:nth-child(3) { transition-delay: 0.31s; }
.process-premium.pp-in-view .pp-item:nth-child(4) { transition-delay: 0.44s; }

.pp-item:last-child { padding-bottom: 0; }

/* Mobile vertical rail (connects node centers down the left column) */
.pp-node-col { position: relative; flex-shrink: 0; align-self: stretch; display: flex; justify-content: center; }
.pp-node-col::after {
  content: ''; position: absolute; top: 30px; bottom: -1.5rem; left: 50%;
  width: 2px; transform: translateX(-50%);
  background: linear-gradient(180deg, var(--node-color, var(--pp-primary)), transparent);
  opacity: 0.45;
}
.pp-item:last-child .pp-node-col::after { display: none; }
.pp-mobile-dot {
  position: absolute; left: 50%; top: 30px; width: 6px; height: 6px; border-radius: 50%;
  transform: translateX(-50%);
  background: var(--node-color, var(--pp-primary));
  box-shadow: 0 0 10px 2px var(--node-color, var(--pp-primary));
  animation: ppFlowDown 2.8s ease-in-out infinite; animation-play-state: paused;
}
.process-premium.pp-in-view .pp-mobile-dot { animation-play-state: running; }
.pp-item:last-child .pp-mobile-dot { display: none; }
@keyframes ppFlowDown {
  0% { transform: translate(-50%, 0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(-50%, calc(100% + 1.5rem)); opacity: 0; }
}

/* ---------------------------------------------------------------------- */
/* Node                                                                    */
/* ---------------------------------------------------------------------- */
.pp-node {
  position: relative; width: 60px; height: 60px; flex-shrink: 0;
}
.pp-ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1.5px solid var(--node-color); opacity: 0.3;
  animation: ppRingPulse 3.2s ease-out infinite; animation-play-state: paused;
}
.process-premium.pp-in-view .pp-ring { animation-play-state: running; }
.pp-ring-2 { inset: -10px; animation-delay: 1.1s; opacity: 0.18; }
@keyframes ppRingPulse {
  0% { transform: scale(0.94); opacity: 0.4; }
  70%, 100% { transform: scale(1.16); opacity: 0; }
}

.pp-node-glow {
  position: absolute; inset: 12%; border-radius: 50%;
  background: var(--node-color); filter: blur(20px); opacity: 0.35;
  transition: opacity 0.4s ease, filter 0.4s ease;
}
.pp-item:hover .pp-node-glow, .pp-item:focus-within .pp-node-glow { opacity: 0.55; filter: blur(26px); }

.pp-node-border {
  position: absolute; inset: 0; border-radius: 50%; padding: 1.5px;
  background: linear-gradient(135deg, var(--node-color), rgba(255,255,255,0) 55%, var(--node-color));
  transition: transform 0.5s cubic-bezier(.16,.84,.44,1);
}
.pp-item:hover .pp-node-border, .pp-item:focus-within .pp-node-border { transform: scale(1.05) translateY(-3px); }

.pp-node-core {
  width: 100%; height: 100%; border-radius: 50%;
  background: linear-gradient(180deg, rgba(255,255,255,0.85), rgba(255,255,255,0.45));
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7), 0 18px 34px -16px var(--node-color);
  display: flex; align-items: center; justify-content: center;
  color: var(--node-color);
}
html[data-theme="dark"] .pp-node-core {
  background: linear-gradient(180deg, rgba(255,255,255,0.10), rgba(255,255,255,0.03));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 18px 34px -16px var(--node-color);
}

.pp-node-icon { width: 24px; height: 24px; transition: transform 0.5s cubic-bezier(.16,.84,.44,1); }
.pp-item:hover .pp-node-icon, .pp-item:focus-within .pp-node-icon { transform: rotate(8deg) scale(1.1); }

/* ---------------------------------------------------------------------- */
/* Card                                                                    */
/* ---------------------------------------------------------------------- */
.pp-card {
  position: relative; flex: 1; min-width: 0;
  background: var(--pp-glass);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--pp-glass-border);
  border-radius: 1.2rem;
  padding: 1.1rem 1.1rem 1rem;
  box-shadow: 0 1px 2px rgba(17,24,39,0.04), 0 20px 40px -28px rgba(17,24,39,0.25);
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(.16,.84,.44,1), box-shadow 0.5s ease, border-color 0.4s ease;
  will-change: transform;
}
.pp-card::before {
  content: ''; position: absolute; top: 0; left: 14%; right: 14%; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--node-color), transparent);
  opacity: 0.7;
}
.pp-item:hover .pp-card, .pp-item:focus-within .pp-card {
  box-shadow: 0 1px 2px rgba(17,24,39,0.05), 0 30px 55px -22px var(--node-color);
  border-color: var(--node-color);
}

.pp-badge-num {
  position: absolute; top: -0.85rem; right: 1rem;
  width: 2.05rem; height: 2.05rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 0.74rem; letter-spacing: -0.01em;
  font-family: 'Inter', var(--font-display, sans-serif), sans-serif;
  color: var(--node-color);
  background: var(--pp-bg);
  border: 1.5px solid var(--node-color);
  box-shadow: 0 8px 18px -8px var(--node-color);
}

.pp-card h3 {
  font-family: 'Inter', var(--font-display, sans-serif), sans-serif;
  font-weight: 700; font-size: 0.96rem; letter-spacing: -0.01em;
  color: var(--pp-text); margin: 0 0 0.4rem;
}
.pp-card-divider { width: 1.85rem; height: 2px; border-radius: 2px; background: var(--node-color); opacity: 0.55; margin-bottom: 0.5rem; }
.pp-card p { margin: 0; font-size: 0.83rem; line-height: 1.55; color: var(--pp-text-muted); font-weight: 500; }

/* ---------------------------------------------------------------------- */
/* Tablet: 2x2                                                             */
/* ---------------------------------------------------------------------- */
@media (min-width: 640px) and (max-width: 1023px) {
  .pp-track { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.75rem 1.5rem; }
  .pp-item { flex-direction: column; align-items: center; text-align: center; padding-bottom: 0; gap: 0; }
  .pp-node { width: 76px; height: 76px; margin-bottom: 1.1rem; }
  .pp-node-icon { width: 27px; height: 27px; }
  .pp-node-col::after, .pp-mobile-dot { display: none; }
  .pp-card { width: 100%; text-align: center; }
  .pp-card::before { left: 20%; right: 20%; }
  .pp-badge-num { left: 50%; right: auto; transform: translateX(-50%); top: -1rem; }
}

/* ---------------------------------------------------------------------- */
/* Desktop: 4-across with animated connector                              */
/* ---------------------------------------------------------------------- */
@media (min-width: 1024px) {
  .pp-flow { padding-top: 2rem; }
  .pp-connector { display: block; }
  .pp-track { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
  .pp-item { flex-direction: column; align-items: center; text-align: center; padding-bottom: 0; gap: 0; }
  .pp-node { width: 84px; height: 84px; margin-bottom: 1.1rem; }
  .pp-node-icon { width: 30px; height: 30px; }
  .pp-node-col::after, .pp-mobile-dot { display: none; }
  .pp-card { width: 100%; text-align: center; }
  .pp-card::before { left: 20%; right: 20%; }
  .pp-badge-num { left: 50%; right: auto; transform: translateX(-50%); top: -1rem; }
  .pp-card:hover, .pp-item:focus-within .pp-card { transform: translateY(-10px) scale(1.015); }
}

/* ---------------------------------------------------------------------- */
/* Bottom feature bar                                                      */
/* ---------------------------------------------------------------------- */
.pp-feature-bar {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  background: var(--pp-glass);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--pp-glass-border);
  border-radius: 1.35rem;
  padding: 1.25rem;
  box-shadow: 0 1px 2px rgba(17,24,39,0.04), 0 24px 48px -30px rgba(17,24,39,0.22);
  display: grid; grid-template-columns: 1fr; gap: 1rem;
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(.16,.84,.44,1) 0.5s, transform 0.7s cubic-bezier(.16,.84,.44,1) 0.5s;
}
.process-premium.pp-in-view .pp-feature-bar { opacity: 1; transform: translateY(0); }

@media (min-width: 640px) { .pp-feature-bar { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .pp-feature-bar { grid-template-columns: repeat(4, 1fr); padding: 1rem; } }

.pp-feature {
  display: flex; align-items: center; gap: 0.75rem; padding: 0.85rem 1rem;
  border-radius: 1rem; position: relative;
  background: var(--pp-bg);
  border: 1px solid transparent;
  transition: transform 0.4s cubic-bezier(.16,.84,.44,1), background 0.4s ease, border-color 0.4s ease;
}
.pp-feature:hover { transform: translateY(-3px); background: rgba(244,63,94,0.07); border-color: rgba(244,63,94,0.45); }
html[data-theme="dark"] .pp-feature:hover { background: rgba(244,63,94,0.12); border-color: rgba(244,63,94,0.5); }

.pp-feature-ico {
  flex-shrink: 0; width: 2.35rem; height: 2.35rem; border-radius: 0.75rem;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(150deg, rgba(36,107,255,0.14), rgba(139,61,255,0.10));
  color: var(--pp-primary);
  transition: transform 0.45s cubic-bezier(.16,.84,.44,1);
}
.pp-feature-ico svg { width: 19px; height: 19px; }
.pp-feature:hover .pp-feature-ico { transform: rotate(-6deg) scale(1.08); }

.pp-feature h4 { margin: 0 0 0.15rem; font-size: 0.86rem; font-weight: 700; color: var(--pp-text); font-family: 'Inter', var(--font-display, sans-serif), sans-serif; }
.pp-feature p { margin: 0; font-size: 0.76rem; color: var(--pp-text-muted); font-weight: 500; }

/* ---------------------------------------------------------------------- */
/* Accessibility                                                          */
/* ---------------------------------------------------------------------- */
.pp-item:focus-within { outline: none; }
.pp-item a:focus-visible, .process-premium button:focus-visible { outline: 2px solid var(--pp-primary); outline-offset: 3px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  .process-premium, .process-premium * {
    animation: none !important;
    transition: opacity 0.4s ease, color 0.4s ease !important;
  }
  .pp-header, .pp-item, .pp-feature-bar { opacity: 1 !important; transform: none !important; }
  .pp-connector-path { stroke-dashoffset: 0 !important; }
  .pp-connector-arrow, .pp-connector-dot { opacity: 0.85 !important; }
  .pp-card:hover, .pp-item:hover .pp-card { transform: none !important; }
}