/* =====================================================
   0G Storage - Section Styles
   ===================================================== */

/* ==================== Problem Section ==================== */
.problem-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: start;
    margin-bottom: var(--space-12);
}

.problem-text {
    padding-right: var(--space-8);
}

.problem-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.problem-card {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.problem-card:hover {
    border-color: var(--color-error);
    box-shadow: var(--shadow-md);
}

.problem-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-error-light);
    color: var(--color-error);
    border-radius: var(--radius-md);
    font-size: var(--text-lg);
}

.problem-content h4 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
}

.problem-content p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0;
}

.solution-banner {
    background: var(--gradient-subtle);
    border: 1px solid var(--color-purple-200);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
}

.solution-banner p {
    font-size: var(--text-lg);
    color: var(--text-primary);
    margin-bottom: var(--space-6);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ==================== Capabilities Section ==================== */
.capabilities-table {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.capability-row {
    display: grid;
    grid-template-columns: auto 1fr 1.5fr;
    gap: var(--space-6);
    align-items: center;
    padding: var(--space-6) var(--space-8);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition-fast);
}

.capability-row:last-child {
    border-bottom: none;
}

.capability-row:hover {
    background: var(--color-purple-50);
}

.capability-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--gradient-subtle);
    color: var(--color-purple-900);
    border-radius: var(--radius-lg);
    font-size: var(--text-xl);
    transition: var(--transition-normal);
}

.capability-row:hover .capability-icon {
    background: var(--gradient-primary);
    color: var(--text-inverse);
    transform: scale(1.1);
}

.capability-name h4 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    margin: 0;
}

.capability-desc p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--leading-relaxed);
}

/* ==================== Security Section ==================== */
.security-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.security-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    transition: var(--transition-normal);
}

.security-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-purple-300);
}

.security-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--gradient-subtle);
    color: var(--color-purple-900);
    border-radius: var(--radius-xl);
    font-size: var(--text-2xl);
    margin-bottom: var(--space-4);
    animation: float 4s ease-in-out infinite;
}

.security-card:nth-child(1) .security-icon { animation-delay: 0s; }
.security-card:nth-child(2) .security-icon { animation-delay: 0.5s; }
.security-card:nth-child(3) .security-icon { animation-delay: 1s; }
.security-card:nth-child(4) .security-icon { animation-delay: 1.5s; }

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-6px);
    }
}

.security-card h4 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
}

.security-card p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0;
}

/* ==================== Partners Section ==================== */
.partners-marquee {
    overflow: hidden;
    position: relative;
    padding: var(--space-8) 0;
}

.partners-marquee::before,
.partners-marquee::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100px;
    z-index: 2;
    pointer-events: none;
}

.partners-marquee::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-secondary), transparent);
}

.partners-marquee::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-secondary), transparent);
}

.partners-track {
    display: flex;
    gap: var(--space-12);
    animation: marquee 30s linear infinite;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.partner-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 160px;
    height: 64px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    color: var(--text-muted);
    font-weight: var(--font-medium);
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition-normal);
}

.partner-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
    border-color: var(--color-purple-300);
    transform: scale(1.05);
}

/* ==================== Economics Section ==================== */
.economics-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.economics-text .section-title {
    text-align: left;
    margin-bottom: var(--space-4);
}

.economics-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.node-reward-flow {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.reward-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-6);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    transition: var(--transition-normal);
}

.reward-node i {
    font-size: var(--text-3xl);
    color: var(--color-purple-700);
}

.reward-node span {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
}

.reward-node.highlight {
    background: var(--gradient-primary);
    border-color: transparent;
}

.reward-node.highlight i,
.reward-node.highlight span {
    color: var(--text-inverse);
}

.reward-arrow {
    color: var(--color-purple-400);
    font-size: var(--text-xl);
    animation: arrow-pulse 1.5s ease-in-out infinite;
}

@keyframes arrow-pulse {
    0%, 100% {
        opacity: 0.5;
        transform: translateX(0);
    }
    50% {
        opacity: 1;
        transform: translateX(4px);
    }
}

/* ==================== CTA Grid Section ==================== */
.cta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.cta-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    text-align: center;
    overflow: hidden;
    transition: var(--transition-normal);
}

.cta-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-subtle);
    opacity: 0;
    transition: var(--transition-normal);
}

.cta-card:hover {
    border-color: var(--color-purple-300);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow-md);
}

.cta-card:hover::before {
    opacity: 1;
}

.cta-card > * {
    position: relative;
    z-index: 1;
}

.cta-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    background: var(--gradient-primary);
    color: var(--text-inverse);
    border-radius: var(--radius-2xl);
    font-size: var(--text-2xl);
    margin-bottom: var(--space-6);
    transition: var(--transition-normal);
}

.cta-card:hover .cta-icon {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow-lg);
}

.cta-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
}

.cta-card p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
    .problem-grid {
        grid-template-columns: 1fr;
    }

    .problem-text {
        padding-right: 0;
        text-align: center;
    }

    .capability-row {
        grid-template-columns: auto 1fr;
    }

    .capability-desc {
        grid-column: 1 / -1;
        padding-left: calc(48px + var(--space-6));
    }

    .security-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .economics-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .economics-text .section-title {
        text-align: center;
    }

    .cta-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }
}

@media (max-width: 640px) {
    .capability-row {
        grid-template-columns: 1fr;
        text-align: center;
        padding: var(--space-6);
    }

    .capability-icon {
        margin: 0 auto var(--space-4);
    }

    .capability-desc {
        padding-left: 0;
    }

    .security-grid {
        grid-template-columns: 1fr;
    }

    .node-reward-flow {
        flex-direction: column;
    }

    .reward-arrow {
        transform: rotate(90deg);
    }

    @keyframes arrow-pulse {
        0%, 100% {
            opacity: 0.5;
            transform: rotate(90deg) translateX(0);
        }
        50% {
            opacity: 1;
            transform: rotate(90deg) translateX(4px);
        }
    }
}