/* === Case study motion infographics (shared) === */

@keyframes caseMotionIn {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes caseIconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.06); }
}

@keyframes casePhoneStageIn {
    from {
        opacity: 0;
        transform: scale(0.58) translateY(32px);
    }
    65% {
        opacity: 1;
        transform: scale(1.08) translateY(-6px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.case-motion {
    opacity: 0;
    transform: translateY(18px);
}

.case-motion.is-visible {
    animation: caseMotionIn 0.55s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.case-motion--phone-device {
    opacity: 0;
    transform: scale(0.58) translateY(32px);
}

.case-motion--phone-device.is-visible {
    animation: casePhoneStageIn 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.case-motion-stagger > .case-motion:nth-child(1) { animation-delay: 0ms; }
.case-motion-stagger > .case-motion:nth-child(2) { animation-delay: 70ms; }
.case-motion-stagger > .case-motion:nth-child(3) { animation-delay: 140ms; }
.case-motion-stagger > .case-motion:nth-child(4) { animation-delay: 210ms; }
.case-motion-stagger > .case-motion:nth-child(5) { animation-delay: 280ms; }
.case-motion-stagger > .case-motion:nth-child(6) { animation-delay: 350ms; }

/* Hide redundant intro when icon grid follows in same section */
.case-info-intro-collapsed {
    display: none !important;
}

/* Phase grids — motion only (no connector line) */
.case-info-flow > * {
    position: relative;
}

.case-info-flow-step .law-phase-num,
.case-info-flow-step .mag-phase-num,
.case-info-flow-step .uav-phase-num,
.case-info-flow-step [class*="-phase-num"] {
    transition: transform 0.3s ease, color 0.3s ease;
}

.case-info-flow.is-visible .case-info-flow-step.is-visible .law-phase-num,
.case-info-flow.is-visible .case-info-flow-step.is-visible .mag-phase-num,
.case-info-flow.is-visible .case-info-flow-step.is-visible .uav-phase-num,
.case-info-flow.is-visible .case-info-flow-step.is-visible [class*="-phase-num"] {
    animation: caseIconPulse 0.6s ease 0.15s 1;
}

/* Icon cards — subtle hover + motion icon ring */
.case-motion.case-problem-card [class*="-problem-icon"],
.case-motion.case-problem-card .case-problem-icon-wrap,
.case-motion .qb-finding-icon,
.case-motion .qb-goal-icon,
.case-motion .law-goal-icon,
.case-motion .mag-goal-icon,
.case-motion .uav-goal-icon,
.case-motion .p2s-phase-icon {
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.case-motion.is-visible.case-problem-card [class*="-problem-icon"],
.case-motion.is-visible.case-problem-card .case-problem-icon-wrap,
.case-motion.is-visible .qb-finding-icon,
.case-motion.is-visible .qb-goal-icon,
.case-motion.is-visible .law-goal-icon,
.case-motion.is-visible .mag-goal-icon,
.case-motion.is-visible .uav-goal-icon,
.case-motion.is-visible .p2s-phase-icon {
    animation: caseIconPulse 0.55s ease 0.2s 1;
}

/* Compact stat strip (auto-injected) */
.case-info-stat-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
    margin: 0 0 20px;
    padding: 0;
    list-style: none;
}
.uav-section.case-section--problem .case-info-stat-strip {
    margin-left: 0;
    padding-left: 0;
}

.case-info-stat-strip .case-motion {
    margin: 0;
}

.case-info-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    border-top: 3px solid var(--accent-blue);
}

.case-info-stat-value {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.2;
}

.case-info-stat-label {
    font-size: 0.72rem;
    line-height: 1.45;
    color: var(--secondary-text);
}

/* Overview motion hero line */
.case-info-tagline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent-color);
    margin-bottom: 12px;
}

.case-info-tagline::before {
    content: "";
    width: 24px;
    height: 2px;
    background: var(--accent-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s ease;
}

.case-info-tagline.is-visible::before {
    transform: scaleX(1);
}

/* Research chart — shared bar diagram (Pic2Split-style) */
.case-phase-block-inner--with-chart,
.p2s-phase-block-inner--with-chart {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

/* Phase pairs — chart nested in copy; image on right */
.case-phase-pairs .case-phase-block-inner--with-chart,
.case-phase-pairs .p2s-phase-block-inner--with-chart {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    grid-template-rows: auto;
    grid-template-areas: "copy media";
    gap: 18px 28px;
    align-items: center;
}
.case-phase-pairs .case-phase-block-inner--with-chart.case-phase-block-inner--media-col-4,
.case-phase-pairs .p2s-phase-block-inner--with-chart.p2s-phase-block-inner--media-col-4 {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
}
.case-phase-pairs .case-phase-block-inner--with-chart .case-phase-block-copy,
.case-phase-pairs .p2s-phase-block-inner--with-chart .p2s-phase-block-copy {
    grid-area: copy;
    max-width: none;
    justify-content: center;
}
.case-phase-pairs .case-phase-block-inner--with-chart .case-phase-block-copy .case-research-chart,
.case-phase-pairs .p2s-phase-block-inner--with-chart .p2s-phase-block-copy .p2s-research-chart {
    margin-top: 10px;
    border: none;
    border-radius: 0;
    padding: 0;
    background: transparent;
    box-shadow: none;
}
.case-phase-pairs .case-phase-block-inner--with-chart .case-phase-block-copy .case-chart-bars,
.case-phase-pairs .p2s-phase-block-inner--with-chart .p2s-phase-block-copy .p2s-chart-bars {
    gap: 8px;
    margin-bottom: 0;
}
.case-phase-pairs .case-phase-block-inner--with-chart .case-phase-block-media,
.case-phase-pairs .p2s-phase-block-inner--with-chart .p2s-phase-block-media {
    grid-area: media;
    align-self: center;
}
.case-phase-pairs .case-research-chart,
.case-phase-pairs .p2s-research-chart {
    border: none;
    border-radius: 0;
    padding: 0;
    background: transparent;
    box-shadow: none;
}
.case-phase-pairs .case-phase-block-inner--with-chart .case-phase-block-media .case-figure img,
.case-phase-pairs .case-phase-block-inner--with-chart .p2s-phase-block-media .case-figure img {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: none;
}
[data-theme="dark"] .case-phase-pairs .case-phase-block-inner--with-chart .case-phase-block-media .case-figure img,
[data-theme="dark"] .case-phase-pairs .case-phase-block-inner--with-chart .p2s-phase-block-media .case-figure img {
    box-shadow: none;
}
@media (max-width: 900px) {
    .case-phase-pairs .case-phase-block-inner--with-chart,
    .case-phase-pairs .p2s-phase-block-inner--with-chart {
        grid-template-columns: 1fr;
        grid-template-areas:
            "copy"
            "media";
    }
}

.case-research-chart--full,
.p2s-research-chart--full {
    grid-column: 1 / -1;
    width: 100%;
}

.case-research-chart,
.p2s-research-chart {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 24px 22px;
    background: var(--bg-color);
}

.case-chart-title,
.p2s-chart-title {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--secondary-text);
    margin: 0 0 18px;
}
.case-chart-desc,
.p2s-chart-desc {
    font-size: 0.78rem;
    line-height: 1.55;
    color: var(--secondary-text);
    margin: 0 0 12px;
}

.case-chart-bars,
.p2s-chart-bars {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 20px;
    padding-bottom: 12px;
}

.case-chart-row,
.p2s-chart-row {
    display: grid;
    grid-template-columns: minmax(88px, 120px) 1fr auto;
    gap: 10px 6px;
    align-items: center;
    padding-bottom: 12px;
}
.case-chart-row:last-child,
.p2s-chart-row:last-child {
    padding-bottom: 0;
}

.case-chart-label,
.p2s-chart-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-color);
}

.case-chart-track,
.p2s-chart-track {
    height: 10px;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

[data-theme="dark"] .case-chart-track,
[data-theme="dark"] .p2s-chart-track {
    background: rgba(255, 255, 255, 0.08);
}

.case-chart-bar,
.p2s-chart-bar {
    height: 100%;
    width: 0;
    border-radius: 999px;
    background: var(--secondary-text);
    opacity: 0.45;
    transition: width 0.85s cubic-bezier(0.22, 1, 0.36, 1);
}

.case-chart-bar--goal,
.p2s-chart-bar--goal {
    background: var(--accent-color);
    opacity: 1;
}

.case-research-chart.is-visible .case-chart-bar,
.case-research-chart.is-visible .p2s-chart-bar,
.p2s-research-chart.is-visible .case-chart-bar,
.p2s-research-chart.is-visible .p2s-chart-bar {
    width: calc(var(--target, 0) * 1%);
}

.case-research-chart.is-visible .case-chart-row:nth-child(1) .case-chart-bar,
.case-research-chart.is-visible .case-chart-row:nth-child(1) .p2s-chart-bar,
.p2s-research-chart.is-visible .p2s-chart-row:nth-child(1) .p2s-chart-bar {
    transition-delay: 0.08s;
}
.case-research-chart.is-visible .case-chart-row:nth-child(2) .case-chart-bar,
.case-research-chart.is-visible .case-chart-row:nth-child(2) .p2s-chart-bar,
.p2s-research-chart.is-visible .p2s-chart-row:nth-child(2) .p2s-chart-bar {
    transition-delay: 0.18s;
}
.case-research-chart.is-visible .case-chart-row:nth-child(3) .case-chart-bar,
.case-research-chart.is-visible .case-chart-row:nth-child(3) .p2s-chart-bar,
.p2s-research-chart.is-visible .p2s-chart-row:nth-child(3) .p2s-chart-bar {
    transition-delay: 0.28s;
}
.case-research-chart.is-visible .case-chart-row:nth-child(4) .case-chart-bar,
.p2s-research-chart.is-visible .p2s-chart-row:nth-child(4) .p2s-chart-bar {
    transition-delay: 0.38s;
}

.case-chart-value,
.p2s-chart-value {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-color);
    text-align: left;
    white-space: nowrap;
    padding-left: 0;
}

.case-chart-value--goal,
.p2s-chart-value--goal {
    color: var(--accent-color);
}

.case-chart-stats,
.p2s-chart-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.case-chart-stat,
.p2s-chart-stat {
    text-align: center;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.45s ease, transform 0.45s ease;
}

.case-research-chart.is-visible .case-chart-stat,
.p2s-research-chart.is-visible .p2s-chart-stat {
    opacity: 1;
    transform: translateY(0);
}

.case-research-chart.is-visible .case-chart-stat:nth-child(1),
.p2s-research-chart.is-visible .p2s-chart-stat:nth-child(1) { transition-delay: 0.45s; }
.case-research-chart.is-visible .case-chart-stat:nth-child(2),
.p2s-research-chart.is-visible .p2s-chart-stat:nth-child(2) { transition-delay: 0.55s; }
.case-research-chart.is-visible .case-chart-stat:nth-child(3),
.p2s-research-chart.is-visible .p2s-chart-stat:nth-child(3) { transition-delay: 0.65s; }

.case-chart-stat-num,
.p2s-chart-stat-num {
    display: block;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--accent-blue);
    line-height: 1.1;
}

.case-chart-stat-label,
.p2s-chart-stat-label {
    display: block;
    font-size: 0.68rem;
    color: var(--secondary-text);
    margin-top: 4px;
    line-height: 1.35;
}

.case-chart-source {
    margin: 14px 0 0;
    font-size: 0.65rem;
    line-height: 1.45;
    color: var(--secondary-text);
    font-style: italic;
}

/* Pie chart — usability issue breakdown */
.case-pie-chart {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 24px 22px;
    background: var(--bg-color);
    margin-bottom: 16px;
}

.case-pie-chart-body {
    display: grid;
    grid-template-columns: minmax(140px, 200px) minmax(0, 1fr);
    gap: 24px;
    align-items: center;
}

.case-pie-chart-visual {
    position: relative;
    width: 100%;
    max-width: 180px;
    aspect-ratio: 1;
    margin: 0 auto;
}

.case-pie-ring {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(
        #e8c840 0 31%,
        #4a55e0 31% 51.7%,
        #e8924a 51.7% 72.4%,
        #7b5cb8 72.4% 93.1%,
        #2ecc71 93.1% 100%
    );
    transform: scale(0.55) rotate(-90deg);
    opacity: 0;
    transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.6s ease;
}

.case-pie-hole {
    position: absolute;
    inset: 22%;
    border-radius: 50%;
    background: var(--bg-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.5s ease 0.35s, transform 0.5s ease 0.35s;
}

.case-pie-hole-num {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-blue);
    line-height: 1;
}

.case-pie-hole-label {
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--secondary-text);
    margin-top: 4px;
}

.case-pie-chart.is-visible .case-pie-ring {
    transform: scale(1) rotate(0deg);
    opacity: 1;
}

.case-pie-chart.is-visible .case-pie-hole {
    opacity: 1;
    transform: scale(1);
}

.case-pie-legend {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.case-pie-legend-item {
    display: grid;
    grid-template-columns: 14px 1fr auto;
    gap: 10px;
    align-items: center;
    opacity: 0;
    transform: translateX(-8px);
    transition: opacity 0.45s ease, transform 0.45s ease;
}

.case-pie-chart.is-visible .case-pie-legend-item:nth-child(1) { opacity: 1; transform: none; transition-delay: 0.25s; }
.case-pie-chart.is-visible .case-pie-legend-item:nth-child(2) { opacity: 1; transform: none; transition-delay: 0.33s; }
.case-pie-chart.is-visible .case-pie-legend-item:nth-child(3) { opacity: 1; transform: none; transition-delay: 0.41s; }
.case-pie-chart.is-visible .case-pie-legend-item:nth-child(4) { opacity: 1; transform: none; transition-delay: 0.49s; }
.case-pie-chart.is-visible .case-pie-legend-item:nth-child(5) { opacity: 1; transform: none; transition-delay: 0.57s; }

.case-pie-swatch {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.case-pie-swatch--minor { background: #e8c840; }
.case-pie-swatch--suggestion { background: #4a55e0; }
.case-pie-swatch--major { background: #e8924a; }
.case-pie-swatch--blocker { background: #7b5cb8; }
.case-pie-swatch--strong { background: #2ecc71; }

.case-pie-legend-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-color);
}

.case-pie-legend-value {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.case-pie-stats {
    margin-top: 18px;
}

@media (max-width: 600px) {
    .case-pie-chart-body {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 500px) {
    .case-chart-stats,
    .p2s-chart-stats { grid-template-columns: 1fr; }
    .case-chart-row,
    .p2s-chart-row { grid-template-columns: 72px 1fr auto; }
}

@media (prefers-reduced-motion: reduce) {
    .case-motion,
    .case-motion.is-visible,
    .case-motion--phone-device,
    .case-motion--phone-device.is-visible {
        opacity: 1;
        transform: none;
        animation: none !important;
    }
    .case-info-tagline::before {
        transform: scaleX(1);
    }
    .case-chart-bar,
    .p2s-chart-bar {
        width: calc(var(--target, 0) * 1%) !important;
        transition: none;
    }
    .case-chart-stat,
    .p2s-chart-stat {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .case-pie-ring,
    .case-pie-hole,
    .case-pie-legend-item {
        opacity: 1;
        transform: none;
        transition: none;
    }
}