/* lib/styles/sections/process_timeline.css */

.process-timeline {
  width: 100%;
}

/* --- Visual Separation for Homepage Section --- */
.process-timeline--section {
  background-color: var(--color-slate-blue-light, #E8EDF5);
  padding: var(--spacing-xl, 64px) var(--spacing-lg, 32px);
  border-radius: var(--radius-xl, 16px);
  
  /* Adds breathing room to separate it from the sections above and below */
  margin-top: var(--spacing-xl, 48px);
  margin-bottom: var(--spacing-xl, 48px);
}

/* --- Header (Only shows on Homepage) --- */
.process-timeline__header {
  display: flex;
  flex-direction: column;
  align-items: center; /* Forces everything inside to center perfectly */
  text-align: center;
  margin-bottom: var(--spacing-xl, 48px);
}

.process-timeline__section-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--color-trust-navy, #0F294A);
  margin: 0 0 var(--spacing-sm, 16px) 0;
  line-height: 1.2;
}

.process-timeline__section-subtitle {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 18px;
  color: var(--color-text-secondary, #4A4D55);
  margin: 0;
  text-align: center;
  max-width: 60ch; /* Prevents the text line from getting too long on wide screens */
  line-height: 1.6;
}

/* --- Grid Layout --- */
.process-timeline__steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-lg, 32px);
  align-items: stretch;
  position: relative;
}

/* Base Card Style */
.process-timeline__step {
  position: relative;
  background-color: var(--color-surface, #FFFFFF);
  border: 1px solid var(--color-border, #E2E4E8);
  border-radius: var(--radius-md, 8px);
  padding: var(--spacing-lg, 24px);
  box-shadow: var(--shadow-sm, 0 2px 8px rgba(15, 41, 74, 0.04));
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md, 16px);
  z-index: 2; /* Keeps cards above connectors */
  transition: transform var(--motion-duration-fast, 200ms) var(--motion-ease-out, ease-out), 
              box-shadow var(--motion-duration-fast, 200ms) var(--motion-ease-out, ease-out), 
              border-color var(--motion-duration-fast, 200ms) var(--motion-ease-out, ease-out);
}

.process-timeline__step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md, 0 8px 24px rgba(15, 41, 74, 0.08));
  border-color: var(--color-slate-blue, #2A4B7C);
}

/* Header: Number and Icon side by side */
.process-timeline__step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.process-timeline__step-num {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full, 50%);
  background-color: var(--color-action-blue, #0056D2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-surface, #FFFFFF);
}

.process-timeline__step-icon {
  font-size: 24px;
  color: var(--color-slate-blue, #2A4B7C);
}

/* Step Content */
.process-timeline__step-body {
  padding: 0;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs, 8px);
}

.process-timeline__step-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-trust-navy, #0F294A);
  margin: 0;
  text-align: left;
}

.process-timeline__step-description {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 15px;
  color: var(--color-text-secondary, #4A4D55);
  line-height: 1.6;
  margin: 0;
  text-align: left;
}

/* Connector Lines (Desktop Only) */
@media (min-width: 1024px) {
  .process-timeline__step--has-connector::after {
    content: "";
    position: absolute;
    top: 36px; /* Aligns visually with the middle of the number circle (24px padding + 20px half-height) */
    right: -32px; /* Bridges the gap */
    width: 32px;
    height: 2px;
    background-color: var(--color-slate-blue, #2A4B7C);
    opacity: 0.3;
    z-index: 1;
    /* Connector line should transition its width smoothly if we add state later */
    transition: width var(--motion-duration-medium, 300ms) var(--motion-ease-out, ease-out);
  }
}

/* Mobile Adjustments */
@media (max-width: 768px) {
  .process-timeline--section {
    padding: var(--spacing-lg, 32px) var(--spacing-md, 16px);
  }
  
  .process-timeline__section-title {
    font-size: 28px;
  }
}

/* =========================================================================
   Choreographed Load Sequence (ScrollReveal Integration)
   ========================================================================= */

@media (prefers-reduced-motion: no-preference) {
  /* Set initial hidden states */
  .process-timeline__header,
  .process-timeline__steps > * {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--motion-duration-medium, 400ms) var(--motion-ease-out, ease-out),
                transform var(--motion-duration-medium, 400ms) var(--motion-ease-out, ease-out);
  }

  /* Connector line load animation */
  @media (min-width: 1024px) {
    .process-timeline__step--has-connector::after {
      width: 0;
      transition: width var(--motion-duration-slow, 600ms) var(--motion-ease-out, ease-out);
    }
  }

  /* Reveal sequence when ScrollAnimationWrapper attaches .is-visible */
  .is-visible .process-timeline__header {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.1s;
  }

  /* Stagger the process steps */
  .is-visible .process-timeline__steps > * {
    opacity: 1;
    transform: translateY(0);
  }

  /* Animate connector lines out */
  @media (min-width: 1024px) {
    .is-visible .process-timeline__step--has-connector::after {
      width: 32px;
    }
  }

  /* Orchestrate the left-to-right flow */
  .is-visible .process-timeline__steps > :nth-child(1) { transition-delay: 0.2s; }
  .is-visible .process-timeline__step--has-connector:nth-child(1)::after { transition-delay: 0.4s; }

  .is-visible .process-timeline__steps > :nth-child(2) { transition-delay: 0.35s; }
  .is-visible .process-timeline__step--has-connector:nth-child(2)::after { transition-delay: 0.55s; }

  .is-visible .process-timeline__steps > :nth-child(3) { transition-delay: 0.5s; }
  .is-visible .process-timeline__step--has-connector:nth-child(3)::after { transition-delay: 0.7s; }

  .is-visible .process-timeline__steps > :nth-child(4) { transition-delay: 0.65s; }
}