/* ==========================================================================
   Hero Demo Card — Modular Skeleton Loading Screen
   Crypto Sphere Design System
   Strict Zero-Shift Layout Synchronization
   ========================================================================== */

:root,
html[data-theme=dark] {
    --skel-base: rgba(255, 255, 255, 0.05);
    --skel-shimmer: linear-gradient(90deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.09) 50%, rgba(255, 255, 255, 0.03) 100%);
    --skel-line: rgba(255, 255, 255, 0.07);
    --skel-wave-stroke: rgba(255, 255, 255, 0.12);
}

html[data-theme=light] {
    --skel-base: rgba(0, 0, 0, 0.05);
    --skel-shimmer: linear-gradient(90deg, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0.09) 50%, rgba(0, 0, 0, 0.03) 100%);
    --skel-line: rgba(0, 0, 0, 0.07);
    --skel-wave-stroke: rgba(0, 0, 0, 0.12);
}

@keyframes cs-skeleton-shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Visibility toggles between states */
.hero-demo-card.is-loading .demo-chart-svg {
    display: none !important;
}

.hero-demo-card.is-loading .demo-chart-labels-layer {
    display: none !important;
}

.hero-demo-card:not(.is-loading) .demo-chart-skeleton {
    display: none !important;
}

/* Skeleton Shimmer Masking (Matches exact loaded element dimensions) */
.hero-demo-card.is-loading #demo-pair {
    display: inline-block;
    width: 78px;
    height: 20px;
    line-height: 20px;
    color: transparent !important;
    background: var(--skel-shimmer) !important;
    background-size: 200% 100% !important;
    animation: cs-skeleton-shimmer 1.35s ease-in-out infinite;
    border-radius: 3px;
    user-select: none;
    pointer-events: none;
    vertical-align: middle;
}

.hero-demo-card.is-loading .pair-type-tag {
    display: inline-flex;
    align-items: center;
    height: 18px;
    line-height: 18px;
    box-sizing: border-box;
    color: transparent !important;
    border-color: transparent !important;
    background: var(--skel-shimmer) !important;
    background-size: 200% 100% !important;
    animation: cs-skeleton-shimmer 1.35s ease-in-out infinite;
    border-radius: 4px;
    user-select: none;
    pointer-events: none;
}

.hero-demo-card.is-loading #demo-price {
    display: inline-block;
    min-width: 80px;
    width: 80px;
    height: 24px;
    line-height: 24px;
    color: transparent !important;
    background: var(--skel-shimmer) !important;
    background-size: 200% 100% !important;
    animation: cs-skeleton-shimmer 1.35s ease-in-out infinite;
    border-radius: 3px;
    user-select: none;
    pointer-events: none;
}

.hero-demo-card.is-loading #demo-change {
    display: inline-flex;
    align-items: center;
    min-width: 52px;
    width: 52px;
    height: 20px;
    line-height: 20px;
    box-sizing: border-box;
    color: transparent !important;
    border-color: transparent !important;
    background: var(--skel-shimmer) !important;
    background-size: 200% 100% !important;
    animation: cs-skeleton-shimmer 1.35s ease-in-out infinite;
    border-radius: 4px;
    user-select: none;
    pointer-events: none;
}

.hero-demo-card.is-loading .demo-stat-lbl {
    display: inline-block;
    width: 56px;
    height: 14px;
    line-height: 14px;
    color: transparent !important;
    background: var(--skel-shimmer) !important;
    background-size: 200% 100% !important;
    animation: cs-skeleton-shimmer 1.35s ease-in-out infinite;
    border-radius: 2px;
    user-select: none;
    pointer-events: none;
}

.hero-demo-card.is-loading .demo-stat-val {
    display: inline-block;
    width: 64px;
    height: 22px;
    line-height: 22px;
    color: transparent !important;
    background: var(--skel-shimmer) !important;
    background-size: 200% 100% !important;
    animation: cs-skeleton-shimmer 1.35s ease-in-out infinite;
    border-radius: 3px;
    user-select: none;
    pointer-events: none;
}

.hero-demo-card.is-loading #demo-side {
    display: inline-flex;
    align-items: center;
    min-width: 76px;
    width: 76px;
    height: 22px;
    line-height: 22px;
    box-sizing: border-box;
    color: transparent !important;
    border-color: transparent !important;
    background: var(--skel-shimmer) !important;
    background-size: 200% 100% !important;
    animation: cs-skeleton-shimmer 1.35s ease-in-out infinite;
    border-radius: 5px;
    user-select: none;
    pointer-events: none;
}

.hero-demo-card.is-loading .demo-tp-pill {
    display: inline-flex;
    align-items: center;
    min-width: 76px;
    width: 76px;
    height: 22px;
    line-height: 22px;
    box-sizing: border-box;
    color: transparent !important;
    border-color: transparent !important;
    background: var(--skel-shimmer) !important;
    background-size: 200% 100% !important;
    animation: cs-skeleton-shimmer 1.35s ease-in-out infinite;
    border-radius: 999px;
    user-select: none;
    pointer-events: none;
}

/* Skeleton Chart Wave Canvas (Exact aspect-ratio match with zero inner padding offset) */
.demo-chart-skeleton {
    display: none;
    position: relative;
    width: 100%;
    aspect-ratio: var(--demo-chart-aspect, 540 / 240);
    height: auto;
    min-height: 140px;
    max-height: 240px;
    padding: 0;
    box-sizing: border-box;
    overflow: hidden;
}

.hero-demo-card.is-loading .demo-chart-skeleton {
    display: block;
}

.demo-skel-grid {
    position: relative;
    z-index: 2;
    height: 100%;
    padding: 16px 0 10px 0;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.demo-skel-row {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
}

.demo-skel-bar {
    height: 9px;
    border-radius: 2px;
    background: var(--skel-shimmer);
    background-size: 200% 100%;
    animation: cs-skeleton-shimmer 1.35s ease-in-out infinite;
    flex-shrink: 0;
}

.demo-skel-bar-sm { width: 52px; }
.demo-skel-bar-md { width: 64px; }
.demo-skel-bar-lg { width: 76px; }

.demo-skel-dashed-line {
    flex: 1;
    height: 1px;
    background-image: linear-gradient(to right, var(--skel-line) 50%, rgba(255, 255, 255, 0) 0%);
    background-position: top;
    background-size: 8px 1px;
    background-repeat: repeat-x;
}

html[data-theme=light] .demo-skel-dashed-line {
    background-image: linear-gradient(to right, var(--skel-line) 50%, rgba(0, 0, 0, 0) 0%);
}

.demo-skel-chart-wave {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.demo-skel-stroke-path {
    stroke: var(--skel-wave-stroke);
}

html[data-theme=light] .demo-skel-fill-path {
    fill: url(#demoSkelFillLight);
}