/* ========================================
   SOLUTIONS PAGE — Interactive Solution Explorer
   ======================================== */

/* --- Intro --- */
.sol-intro {
    font-size: 1.15rem;
    color: var(--color-text);
    max-width: 800px;
    margin: 0 auto 2rem;
    text-align: center;
    line-height: 1.7;
}

/* --- Explorer Section --- */
.sol-explorer-section {
    overflow: visible;
}

/* --- Cards Row --- */
.sol-cards-row {
    display: flex;
    gap: 2rem;
    justify-content: center;
    padding: 2rem 0 3rem;
}

/* --- Individual Card --- */
.sol-card {
    position: relative;
    flex: 1;
    max-width: 340px;
    min-height: 290px;
    cursor: pointer;
    transition: box-shadow 0.4s ease, transform 0.4s ease;
    border-radius: 0.75rem;
    background: var(--color-white);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--color-theme-3);
    overflow: hidden;
}

/* Accent line at top — unified brand blue */
.sol-card-accent {
    height: 3px;
    width: 100%;
    background: var(--color-theme-3);
    transition: height 0.3s ease;
}

.sol-card:hover .sol-card-accent {
    height: 5px;
}

.sol-card-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2.5rem 1.5rem 2rem;
    text-align: center;
    gap: 0.75rem;
}

/* --- Floating Icon --- */
.sol-card-icon {
    width: 52px;
    height: 52px;
    color: var(--color-theme-3);
    animation: sol-float 4s ease-in-out infinite;
    transition: transform 0.3s ease, color 0.3s ease;
}

.sol-card-icon svg {
    width: 100%;
    height: 100%;
}

.sol-card:hover .sol-card-icon {
    animation: none;
    transform: scale(1.1);
    color: var(--color-theme-3);
}

@keyframes sol-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* --- Card Title & Subtitle --- */
.sol-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-theme-3);
    margin: 0.25rem 0 0;
    letter-spacing: -0.01em;
}

.sol-card-subtitle {
    font-size: 0.9rem;
    color: var(--color-slate-500);
    font-weight: 400;
    margin: 0;
}

/* --- Explore Hint --- */
.sol-card-expand-hint {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-slate-500);
    transition: color 0.3s ease;
}

.sol-card-expand-hint svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.sol-card:hover .sol-card-expand-hint {
    color: var(--color-theme-3);
}

.sol-card:hover .sol-card-expand-hint svg {
    transform: translateY(2px);
}

/* --- Card Preview Text --- */
.sol-card-preview {
    font-size: 0.85rem;
    color: var(--color-slate-500);
    line-height: 1.5;
    margin: 0.25rem 0 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.4s ease, opacity 0.3s ease, margin 0.3s ease;
}

.sol-card:hover .sol-card-preview {
    max-height: 80px;
    opacity: 1;
    margin: 0.5rem 0 0;
}

/* --- Card Hover Elevation --- */
.sol-card:hover {
    box-shadow: 0 8px 32px rgba(0, 87, 129, 0.1);
    transform: translateY(-4px);
}

/* --- Active Card (expanded) --- */
.sol-card.sol-active {
    box-shadow: 0 0 0 2px var(--color-theme-3), 0 8px 32px rgba(0, 87, 129, 0.12);
}

.sol-card.sol-active .sol-card-accent {
    height: 5px;
}

.sol-card.sol-active .sol-card-expand-hint svg {
    transform: rotate(180deg);
}

.sol-card.sol-active .sol-card-expand-hint span {
    display: none;
}

/* Dimmed state for sibling cards */
.sol-card.sol-dimmed {
    opacity: 0.4;
    filter: grayscale(0.15);
    transform: scale(0.98) !important;
    pointer-events: none;
    transition: opacity 0.4s ease, transform 0.4s ease, filter 0.4s ease;
}

/* --- Scroll Reveal Entrance --- */
.sol-card {
    opacity: 0;
    transform: translateY(30px);
}

.sol-card.sol-revealed {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.6s cubic-bezier(0.16, 1, 0.3, 1),
                box-shadow 0.4s ease;
}

.sol-card:nth-child(1).sol-revealed { transition-delay: 0s; }
.sol-card:nth-child(2).sol-revealed { transition-delay: 0.12s; }
.sol-card:nth-child(3).sol-revealed { transition-delay: 0.24s; }

.sol-card.sol-dimmed {
    opacity: 0.4;
}

/* =========================================
   DETAIL PANELS
   ========================================= */

.sol-detail-panel {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.5s cubic-bezier(0.16, 1, 0.3, 1),
                opacity 0.4s ease,
                margin 0.4s ease;
    margin: 0;
}

.sol-detail-panel.sol-panel-open {
    max-height: 800px;
    opacity: 1;
    margin: 1.5rem 0 2rem;
}

.sol-panel-inner {
    position: relative;
    background: var(--color-slate-50);
    border-radius: 0.75rem;
    padding: 2.5rem 3rem;
    border: 1px solid var(--color-border);
}

.sol-panel-close {
    position: absolute;
    top: 1rem;
    right: 1.25rem;
    font-size: 1.5rem;
    color: var(--color-slate-500);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s ease, color 0.2s ease;
}

.sol-panel-close:hover {
    background: var(--color-slate-200);
    color: var(--color-theme-3);
}

.sol-panel-header h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-theme-3);
    margin: 0 0 1rem;
}

/* --- Features List --- */
.sol-panel-features {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.sol-panel-features-split {
    grid-template-columns: 1fr 1fr;
}

.sol-panel-col {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.sol-panel-col-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-slate-500);
    font-weight: 600;
    margin: 0 0 0.25rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--color-slate-200);
}

/* --- Feature Item --- */
.sol-panel-feature {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.sol-panel-open .sol-panel-feature {
    opacity: 1;
    transform: translateX(0);
}

.sol-panel-open .sol-panel-feature:nth-child(1) { transition-delay: 0.05s; }
.sol-panel-open .sol-panel-feature:nth-child(2) { transition-delay: 0.10s; }
.sol-panel-open .sol-panel-feature:nth-child(3) { transition-delay: 0.15s; }
.sol-panel-open .sol-panel-feature:nth-child(4) { transition-delay: 0.20s; }
.sol-panel-open .sol-panel-feature:nth-child(5) { transition-delay: 0.25s; }
.sol-panel-open .sol-panel-feature:nth-child(6) { transition-delay: 0.30s; }

.sol-panel-col .sol-panel-feature:nth-child(2) { transition-delay: 0.08s; }
.sol-panel-col .sol-panel-feature:nth-child(3) { transition-delay: 0.16s; }
.sol-panel-col .sol-panel-feature:nth-child(4) { transition-delay: 0.24s; }
.sol-panel-col .sol-panel-feature:nth-child(5) { transition-delay: 0.32s; }

/* --- Dot --- */
.sol-dot {
    width: 7px;
    height: 7px;
    min-width: 7px;
    border-radius: 50%;
    background: var(--color-theme-3);
    margin-top: 0.5rem;
    transition: transform 0.3s ease;
}

.sol-panel-open .sol-dot {
    animation: sol-dot-pop 0.4s ease forwards;
}

@keyframes sol-dot-pop {
    0% { transform: scale(0); }
    70% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.sol-panel-feature span {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.5;
}

.sol-panel-feature:hover .sol-dot {
    transform: scale(1.3);
}

.sol-panel-feature:hover span {
    color: var(--color-theme-3);
}

/* --- Sub-bullet (indented) --- */
.sol-panel-feature--sub {
    padding-left: 1.5rem;
}

.sol-panel-feature--sub .sol-dot {
    width: 6px;
    height: 6px;
    min-width: 6px;
    border-radius: 50%;
    background: transparent;
    border: 1.5px solid var(--color-theme-3);
}

/* --- Panel CTA --- */
.sol-panel-cta {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-slate-200);
}

.sol-panel-cta .button-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    padding: 0.65rem 1.75rem;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sol-panel-cta .button-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 87, 129, 0.2);
}

/* =========================================
   VALUES SECTION
   ========================================= */

.values-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem 3rem;
    max-width: 960px;
    margin: 0 auto;
}

.value-card {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
}

.value-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    color: var(--color-theme-1);
}

.value-icon svg,
.value-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.value-content {
    flex: 1;
    min-width: 0;
}

.value-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-theme-3);
    margin: 0 0 0.6rem;
    line-height: 1.3;
}

.value-description {
    font-size: 0.92rem;
    color: var(--color-text);
    line-height: 1.65;
    margin: 0 0 0.5rem;
}

.value-description:last-child {
    margin-bottom: 0;
}

/* =========================================
   RESPONSIVE — Mobile
   ========================================= */

@media (max-width: 767px) {
    .sol-cards-row {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        perspective: none;
        padding: 1rem 0 1.5rem;
    }

    .sol-card {
        max-width: 100%;
        min-height: auto;
        width: 100%;
        flex: none;
    }

    .sol-card-inner {
        display: grid;
        grid-template-columns: 40px 1fr auto;
        grid-template-rows: auto auto;
        align-items: center;
        padding: 1.25rem 1.5rem;
        gap: 0.125rem 1rem;
        text-align: left;
        min-height: 88px;
    }

    .sol-card-icon {
        grid-column: 1;
        grid-row: 1 / -1;
        width: 40px;
        height: 40px;
        animation: none;
    }

    .sol-card-title {
        grid-column: 2;
        grid-row: 1;
        font-size: 1.1rem;
    }

    .sol-card-subtitle {
        grid-column: 2;
        grid-row: 2;
        font-size: 0.8rem;
    }

    .sol-card-expand-hint {
        grid-column: 3;
        grid-row: 1 / -1;
        margin-top: 0;
        margin-left: 0;
    }

    .sol-card-expand-hint span {
        display: none;
    }

    .sol-card-preview {
        display: none;
    }

    .sol-detail-panel {
        width: 100%;
        flex: none;
    }

    .sol-detail-panel.sol-panel-open {
        max-height: 1200px;
        margin: 0.25rem 0 0.5rem;
    }

    .sol-panel-inner {
        padding: 1.5rem;
    }

    .sol-panel-features {
        grid-template-columns: 1fr;
    }

    .sol-panel-features-split {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .sol-panel-feature span {
        font-size: 0.9rem;
    }

    .values-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .value-icon {
        width: 48px;
        height: 48px;
    }
}

@media (min-width: 768px) and (max-width: 1024px) {
    .sol-card {
        max-width: 280px;
        min-height: 260px;
    }

    .sol-card-inner {
        padding: 2rem 1.25rem 1.5rem;
    }
}